Wearable device with display, and method therefor

Abstract

This wearable device may comprise: a memory configured to store instructions; an eye tracking circuit configured to acquire eye tracking data related to the gaze of one or more eyes; a display; and a processor. The processor can be configured to execute the instructions in order to cause the wearable device to: determine, on the basis of the eye tracking data, a foveated area of a screen displayed on the display and a peripheral area of the screen encompassing the foveated area; control the luminance of the peripheral area in order to display the peripheral area, which is darker than the foveated area, while the screen is displayed on the display operating in a first state; and control the luminance of the peripheral area in order to display the peripheral area, which is darker than the peripheral area displayed on the display operating in the first state, while the screen is displayed on the display operating in a second state for power consumption lower than that of the first state.

Description

Wearable device having a display and method thereof

[0001] The descriptions below relate to a wearable device having a display and a method thereof.

[0002] Wearable devices can be used to provide augmented reality (AR) services, virtual reality (VR) services, mixed reality (MR) services, or extended reality (XR) services. For example, the wearable device may include a display positioned relatively close to the user's eyes. The display may be used to display images.

[0003] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above-described matters constitute prior art related to the present disclosure.

[0004] A wearable device is provided. The wearable device may include a memory configured to store instructions. The wearable device may include eye tracking circuitry configured to obtain eye tracking data regarding the gaze of one or more eyes. The wearable device may include a display. The wearable device may include a processor. The processor may be configured to execute the instructions to cause the wearable device to determine, based on the eye tracking data, a foveated area of ​​a screen displayed on the display and a peripheral area of ​​the screen surrounding the foveated area. The processor may be configured to execute the instructions to cause the wearable device to control a luminance of the peripheral area so as to display the peripheral area darker than the foveated area while the screen is displayed on the display operating in a first state. The processor may be configured to execute the instructions to cause the wearable device to control the luminance of the peripheral area so as to display the peripheral area darker than the peripheral area displayed on the display operating in the first state while the screen is displayed on the display operating in a second state for lower power consumption than the first state.

[0005] A method is provided. The method can be executed in a wearable device having a display and eye tracking circuitry configured to acquire eye tracking data regarding the gaze of one or more eyes. The method can include determining, based on the eye tracking data, a foveated area of ​​a screen displayed on the display and a peripheral area of ​​the screen surrounding the foveated area. The method can include controlling a luminance of the peripheral area so as to display the peripheral area darker than the foveated area while the screen is displayed on the display operating in a first state. The method can include controlling a luminance of the peripheral area so as to display the peripheral area darker than the peripheral area displayed on the display operating in a first state while the screen is displayed on the display operating in a second state for lower power consumption than the first state.

[0006] A non-transitory computer-readable storage medium is provided. The non-transitory computer-readable storage medium may store one or more programs. The one or more programs may include instructions that, when executed by a wearable device having a display and eye tracking circuitry configured to obtain eye tracking data regarding the gaze of one or more eyes, cause the wearable device to determine, based on the eye tracking data, a foveated area of ​​a screen displayed on the display and a peripheral area of ​​the screen surrounding the foveated area. The one or more programs may include instructions that, when executed by the wearable device, cause the wearable device to control a luminance of the peripheral area so as to display the peripheral area darker than the foveated area while the screen is displayed on the display operating in a first state. The one or more programs may include instructions that, when executed by the wearable device, cause the wearable device to control the luminance of the peripheral area so as to display the peripheral area darker than the peripheral area displayed on the display operating in the first state while the screen is displayed on the display operating in a second state for lower power consumption than the first state.

[0007] Figure 1 illustrates an exemplary wearable device.

[0008] Figure 2 is a simplified block diagram of an exemplary wearable device.

[0009] Figure 3 illustrates an example of a first state of the display.

[0010] Figure 4 illustrates an example of a second state of the display.

[0011] Figure 5 illustrates an example of a third state of the display.

[0012] Figure 6 illustrates an exemplary method for changing the state of a display from a first state to a second state.

[0013] Figure 7 illustrates an exemplary method for changing a first state of a display changed from a third state to a second state.

[0014] FIG. 8 illustrates an exemplary method for changing the state of a display from a first state to a third state in response to a change in a software application that provides frame images used for display on the screen.

[0015] FIG. 9 is a block diagram of an electronic device within a network environment according to various embodiments.

[0016] FIG. 10 is a block diagram of a display module according to various embodiments.

[0017] Figure 1 illustrates an exemplary wearable device.

[0018] Referring to FIG. 1, a wearable device (100) can be worn by a user (190). For example, the user (190) can mount the wearable device (100) on the user's (190) head.

[0019] The wearable device (100) may include a display (110). For example, the display (110) may be used to display images, screens, visual information, visual data, and / or image content. For example, the display (110) may be positioned in front of one or more eyes of a user (190) wearing the wearable device (100). For example, the wearable device (100) may include a display (110) that is arranged with respect to one or more eyes of the user (190) when the wearable device (100) is worn by the user (190).

[0020] Although not illustrated in FIG. 1, the wearable device (100) may include a rechargeable battery. As a non-limiting example, since the wearable device (100) is a device mounted on the head of a user (190), the rechargeable battery may be relatively light in weight. For example, since the rechargeable battery is relatively light in weight, the capacity of the rechargeable battery may be relatively small. For example, since the capacity of the rechargeable battery may be relatively small, the wearable device (100) may be configured to perform operations for lower power consumption of the display (110). For example, the wearable device (100) may include components for the above operations. These components will be exemplified in the description of FIG. 2.

[0021] FIG. 1 illustrates a wearable device (100) that is a video see-through (VST) device, but this is merely exemplary. The wearable device (100) may also be implemented as augmented reality (AR) glasses.

[0022] Figure 2 is a simplified block diagram of an exemplary wearable device.

[0023] Referring to FIG. 2, the wearable device (100) may include a processor (210), a memory (220), and a display (110). The wearable device (100) may further include an eye tracking circuit (240).

[0024] The processor (210) may include at least a portion of the processor (920) of FIG. 9, or may correspond to at least a portion of the processor (920) of FIG. 9. The processor (210) may be used to control the memory (220) and the display (120). The processor (210) may be used to control the eye tracking circuit (240). For example, the processor (210) may include a processing circuit. For example, the processor (210) may include one or more processors, or at least one processor. For example, the processor (210) may be configured to cause the wearable device (100) to execute (individually or collectively) at least some of the operations illustrated in the descriptions of FIGS. 2 through 8.

[0025] The memory (220) may include at least a portion of the memory (930) of FIG. 9 or may correspond to at least a portion of the memory (930) of FIG. 9. The memory (220) may be configured to store instructions that cause the wearable device (100) to execute at least a portion of the operations illustrated in the descriptions of FIGS. 2 through 8.

[0026] The memory (220) may include one or more memories (or one or more storage media). For example, the memory (220) may include non-volatile memory (e.g., non-volatile memory (934) of FIG. 9). As a non-limiting example, the memory (220) may further include volatile memory (e.g., volatile memory (932) of FIG. 9).

[0027] The memory (220) can store instructions executable by the processor (210). When executed by the processor (210), the instructions can cause the wearable device (100) to perform the operations illustrated in the descriptions of FIGS. 2 to 8.

[0028] The display (110) may include at least a portion of the display module (960) of FIGS. 9 and 10 or correspond to at least a portion of the display module (960) of FIGS. 9 and 10. The display (110) may be used to display a screen (e.g., visual information, visual data, images, and / or image content). The display (110) may be used to display the screen obtained (or generated) (or rendered) by the processor (210). For example, the display (110) may be used to display the screen provided from the processor (210).

[0029] The display (110) may include a display driving circuit (231) and a display panel (232). For example, the display driving circuit (231) may be used to display a screen on the display panel (232).

[0030] As a non-limiting example, the display driving circuit (231) may include a memory (e.g., graphic random access memory (GRAM)) configured to store information about at least a portion of the screen. As a non-limiting example, the display driving circuit (231) may not include the memory.

[0031] As a non-limiting example, at least some of the operations of the processor (210) exemplified below may be executed by the display driver circuit (231). For example, at least some of the operations of the processor (210) exemplified below may be replaced with operations of the display driver circuit (231).

[0032] The eye tracking circuit (240) may be configured to obtain eye tracking data regarding the gaze of one or more eyes of a user wearing the wearable device (100) (e.g., the user (190) of FIG. 1). As a non-limiting example, the eye tracking circuit (240) may include at least one camera directed toward one or more eyes of the user wearing the wearable device (100). As a non-limiting example, the eye tracking circuit (240) may include a light emitter (or light emitting circuit) configured to emit light (e.g., infrared light) toward (or to) one or more eyes of the user wearing the wearable device (100). For example, the eye tracking circuit (240) may, under the control of the processor (210), acquire at least a portion of images captured using the at least one camera while the light is emitted from the light emitting unit as the eye tracking data. For example, the eye tracking data may be provided to the processor (210). As a non-limiting example, the eye tracking data may be used to measure, identify, determine, specify, monitor, or acquire the position of the gaze. As a non-limiting example, the eye tracking data may be used to measure, identify, determine, specify, monitor, or acquire the number of blinks of one or more eyes of the user. As a non-limiting example, the eye tracking data may be used to measure, identify, determine, specify, monitor, or acquire the rate (or speed) of movement of the gaze. As a non-limiting example, the eye tracking data may be used to measure, identify, determine, specify, monitor, or acquire the size of a pupil of one or more eyes of the user.

[0033] For example, the display (110) can have multiple states.

[0034] For example, the plurality of states may include a first state. The first state may be defined within the wearable device (100) for lower power consumption. For example, the display (110) may operate in the first state for lower power consumption. The first state may be referred to as a critical condition mode.

[0035] For example, the plurality of states may further include a second state. The second state may be defined within the wearable device (100) for low power consumption. For example, the second state may be defined within the wearable device (100) for lower power consumption than the first state. For example, the power consumed by the display (110) operating in the second state may be (generally) less than the power consumed by the display (110) operating in the first state. However, this is not limited thereto. For example, although the second state is defined for lower power consumption than the first state, the power consumed by the display (110) operating in the second state may not always be less than the power consumed by the display (110) operating in the first state. For example, it should be noted that there may be a time period (or moment) in which the power consumed by the display (110) operating in the second state is greater than the power consumed by the display (110) operating in the first state, depending on the state of the screen displayed on the display (110). For example, the visual quality of the screen displayed on the display (110) operating in the second state may be lower than the visual quality of the screen displayed on the display (110) operating in the first state. The second state may be referred to as a limit condition mode.

[0036] For example, the plurality of states may further include a third state. Unlike the first state and the second state, the third state may be defined within the wearable device (100) for performance. For example, the visual quality of a screen displayed on a display (110) operating in the third state may be higher than the visual quality of a screen displayed on a display (110) operating in the first state. For example, the visual quality of a screen displayed on a display (110) operating in the third state may be higher than the visual quality of a screen displayed on a display (110) operating in the second state. The third state may be referred to as a basic mode.

[0037] The first state, the second state, and the third state are exemplified in the descriptions of FIGS. 3 to 5.

[0038] Figure 3 illustrates an example of a first state of the display. Figure 4 illustrates an example of a second state of the display. Figure 5 illustrates an example of a third state of the display.

[0039] Referring to FIG. 3, the processor (210) can determine a foveated area (310) of the screen and a peripheral area (320) of the screen to control the brightness of the display (110) operating in the first state.

[0040] For example, the foveated area (310) may represent an area recognized or gazed upon by fovea centralis vision. For example, the foveated area (310) may be determined based on eye tracking data regarding the gaze of one or more eyes of a user (e.g., user (190)) wearing the wearable device (100). For example, the foveated area (310) may represent a portion of the screen where the gaze corresponding to the fovea centralis vision is located. For example, the foveated area (310) may represent a portion of the screen that is focused on by a user looking at the screen. For example, the foveated area (310) may be round, as illustrated in FIG. 3. For example, the foveated area (310), unlike the illustration in FIG. 3, may be rectangular or triangular. However, the present invention is not limited thereto. For example, the foveated area (310) may have a shape corresponding to the shape of the area recognized by the central vision. The foveated area (310) may be referred to as a central area.

[0041] For example, the peripheral region (320) may represent an area recognized or gazed upon by peripheral vision outside of the zone gazed upon by the fovea. For example, the peripheral region (320) may surround the foveated region (310). For example, the peripheral region (320) may represent a portion of the screen distinct from the foveated region (310). For example, the peripheral region (320) may represent a portion of the screen located outside the line of sight corresponding to the foveal vision. As a non-limiting example, the peripheral region (320) may represent a portion of the screen that is spaced apart from the position of the gaze by a distance greater than a reference distance. For example, the peripheral region (320) may represent a portion of the screen that is included in the field of view of a user looking at the screen but is not focused on by the user.

[0042] For example, the processor (210) may determine the foveated area (310) of the screen displayed on the display (110) operating in the first state and the peripheral area (320) of the screen. For example, the processor (210) may control the brightness of the peripheral area (320) to display the peripheral area (320) that is dimmer or darker than the foveated area (310) while the screen is displayed on the display (110) operating in the first state. For example, the first state may represent a state of the display (110) that displays the peripheral area (320) that is darker than the foveated area (310) for low power consumption. For example, in terms of the state of the display (110) for low power consumption, the first state and the second state are common, but the first state, unlike the second state, may be a state of the display (110) in which the user does not recognize that the peripheral area (320) is darker than the foveated area (310). For example, the probability that the user recognizes that the peripheral area (320) displayed on the display (110) operating in the first state is darker than the foveated area (310) displayed on the display (110) operating in the first state may be lower than the probability that the user recognizes that the peripheral area (e.g., the peripheral area (420) of FIG. 4) displayed on the display (110) operating in the second state is darker than the foveated area (e.g., the foveated area (410) of FIG. 4) displayed on the display (110) operating in the second state.

[0043] For example, while the display (110) operates in the first state, the processor (210) may determine a foveated area of ​​a frame image for displaying the screen based on the eye tracking data, and display the foveated area (310) with a luminance corresponding to the grayscale values ​​of the foveated area of ​​the frame image. For example, while the display (110) operates in the first state, the processor (210) may determine a peripheral area of ​​the frame image based on the eye tracking data, and display the peripheral area (320) with a luminance lower than the grayscale values ​​of the peripheral area of ​​the frame image in order to display the peripheral area (320) darker than the foveated area (310). For example, the peripheral area (320) may be displayed on the display (110) operating in the first state by reducing the grayscale values ​​of the peripheral area of ​​the frame image. For another example, the peripheral area (320) can be displayed on the display (110) operating in the first state by providing the display panel (232) with voltage values ​​that are lower than the grayscale values ​​of the peripheral area of ​​the frame image (or current values ​​that are lower than the grayscale values ​​of the peripheral area of ​​the frame image) (or voltage values ​​that are higher than the grayscale values ​​of the peripheral area of ​​the frame image) using the display driving circuit (231). For another example, the peripheral area (320) can be displayed on the display (110) operating in the first state by reducing the grayscale values ​​of the peripheral area of ​​the frame image and providing the display panel (232) with voltage values ​​(or current values) that are lower than the reduced grayscale values ​​using the display driving circuit (231).

[0044] For example, the processor (210) may control (or adjust) (or set) the luminance of the peripheral region (320) by tapering (or gradually decreasing) the luminance of the peripheral region (320) from higher luminance near the foveated region (310) to lower luminance at the periphery of the peripheral region (320) while the screen is displayed on the display (110) operating in the first state.

[0045] For example, the processor (210) may taper the luminance of the peripheral region (320) from high luminance near the foveated region (310) to low luminance at the periphery of the peripheral region (320) at a luminance reduction rate determined based on the context while the screen is displayed on the display (110) operating in the first state.

[0046] For example, the above situation may include a state of a screen displayed on a display (110) operating in the first state. For example, the processor (210) may, while the screen is displayed on the display (110) operating in the first state, taper the luminance of the peripheral area (320) from high luminance near the foveated area (310) to low luminance at the periphery of the peripheral area (320) at the luminance reduction rate determined based on the state of the screen. For example, the processor (210) may control the luminance of the peripheral area (320) as in state (330) by tapering the luminance of the peripheral area (320) at the first luminance reduction rate determined based on the first state of the screen. For example, the processor (210) may control the luminance of the peripheral area (320) as in the state (340) by tapering the luminance of the peripheral area (320) at a second luminance reduction rate (different from the first luminance reduction rate) determined based on a second state of the screen that is different from the first state of the screen. For example, the peripheral area (320) of the screen displayed on the display (110) operating in the first state may be displayed differently depending on the state of the screen.

[0047] For example, the state of the screen used to determine the luminance reduction rate applied while the display (110) is operating in the first state may include a spatial information value (e.g., spatial information defined in the ITU-T (international telecommunication union telecommunication standardization sector) P.910 standard) indicating the spatial distribution of brightness values ​​of a foveated area within each of the frame images used for the screen to be displayed on the display (110). For example, the luminance reduction rate may vary depending on the spatial information value. For example, the luminance reduction rate may increase as the spatial information value increases. For example, the processor (210) may obtain a spatial information value indicating the spatial distribution of brightness values ​​of a foveated area within each of the frame images used for the screen to be displayed on the display (110) operating in the first state. For example, the processor (210) may determine the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) operating in the first state as the first reduction rate based on obtaining the first value as the spatial information value. For example, the processor (210) may determine the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) operating in the first state as the second reduction rate higher than the first reduction rate based on obtaining the second value higher than the first value as the spatial information value.

[0048] For example, the state of the screen used to determine the luminance reduction rate applied while the display (110) is operating in the first state may include a temporal information value (e.g., temporal information defined in the ITU-T P.910 standard) indicating a temporal change in a foveated region within each of the frame images used for the screen to be displayed on the display (110). For example, the luminance reduction rate may vary depending on the temporal information value. For example, the luminance reduction rate may increase as the temporal information value increases. For example, the processor (210) may obtain a temporal information value indicating a temporal change in a foveated region within each of the frame images used for the screen to be displayed on the display (110) operating in the first state. For example, the processor (210) may determine the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) operating in the first state as the first reduction rate based on obtaining the first value as the time information value. For example, the processor (210) may determine the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) operating in the first state as the second reduction rate higher than the first reduction rate based on obtaining the second value higher than the first value as the time information value. As another example, the processor (210) may increase the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) operating in the first state based on confirming that the time information value changes by more than a threshold value.

[0049] For example, the state of the screen used to determine the luminance reduction rate applied while the display (110) is operating in the first state may include an average luminance for the screen. For example, the luminance reduction rate may vary depending on the average luminance. For example, the processor (210) may obtain the average luminance for the screen based on grayscale values ​​of each of the frame images used for the screen to be displayed on the display (110) operating in the first state and at least one brightness value according to a setting of the display (110) (e.g., a global setting of the wearable device (100). For example, the processor (210) may determine the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) operating in the first state based on the average luminance.

[0050] For example, the state of the screen used to determine the luminance reduction rate applied while the display (110) is operating in the first state may include a relationship between a first average grayscale value of a foveated region (310) and a second average grayscale value of a peripheral region (320). For example, the luminance reduction rate may vary depending on the relationship. For example, the processor (210) may obtain the first average grayscale value of the foveated region of each of the frame images used for the screen to be displayed on the display (110) operating in the first state. For example, the processor (210) may obtain the second average grayscale value of the peripheral region of each of the frame images used for the screen to be displayed on the display (110) operating in the first state. For example, the processor (210) may determine the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) operating in the first state as a first reduction rate based on the first average grayscale value that is higher than the second average grayscale value. For example, the processor (210) may determine the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) operating in the first state as a second reduction rate that is higher than the first reduction rate.As a non-limiting example, the processor (210) may determine the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) operating in the first state, based on the first average grayscale value being equal to the second average grayscale value, as a third reduction rate (or the first reduction rate) (or the second reduction rate) between the first reduction rate and the second reduction rate.

[0051] For example, the state of the screen used to determine the luminance reduction rate applied while the display (110) is operating in the first state may include a change in the average grayscale value of the peripheral region (320). For example, the luminance reduction rate may vary depending on a change in the average grayscale value of the peripheral region (320). For example, the processor (210) may obtain the average grayscale value of the peripheral region of each of the frame images used for the screen to be displayed on the display (110) operating in the first state. For example, the processor (210) may increase the luminance reduction rate used to taper the luminance of the peripheral region (320) displayed on the display (110) operating in the first state based on confirming a decrease in the average grayscale value. For example, the processor (210) may reduce the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) operating in the first state based on determining an increase in the average grayscale value. As a non-limiting example, the processor (210) may maintain the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) operating in the first state based on determining a maintenance of the average grayscale value.

[0052] For example, the above situation may include a state of a user (e.g., user (190)) looking at a screen displayed on a display (110) operating in the first state. For example, the processor (210) may, while the screen is displayed on the display (110) operating in the first state, taper the luminance of the peripheral area (320) from high luminance near the foveated area (310) to low luminance at the periphery of the peripheral area (320) at the luminance reduction rate determined based on the state of the user. For example, the processor (210) may control the luminance of the peripheral area (320) as in state (330) by tapering the luminance of the peripheral area (320) at the first luminance reduction rate determined based on the first state of the user. For example, the processor (210) may control the luminance of the peripheral area (320) as in the state (330) by tapering the luminance of the peripheral area (320) at a second luminance reduction rate (different from the first luminance reduction rate) determined based on a second state of the user that is different from the first state of the user. For example, the peripheral area (320) of the screen displayed on the display (110) operating in the first state may be displayed differently depending on the state of the user.

[0053] For example, the state of the user used to determine the luminance reduction rate applied while the display (110) is operating in the first state may include a change in the size of a pupil of one or more eyes of the user. For example, the luminance reduction rate may vary depending on the change in the size of the pupil. For example, the processor (210) may obtain eye tracking data including data about the size of the pupil of the one or more eyes of the user while a screen is displayed on the display (110) operating in the first state. For example, the processor (210) may increase the luminance reduction rate used to taper the luminance of the peripheral region (320) displayed on the display (110) operating in the first state based on determining an increase in the size of the pupil through the eye tracking data. For example, the processor (210) may reduce the luminance reduction rate used to taper the luminance of the peripheral region (320) displayed on the display (110) operating in the first state based on confirming a decrease in the size of the pupil through the eye tracking data. As a non-limiting example, the processor (210) may maintain the luminance reduction rate used to taper the luminance of the peripheral region (320) displayed on the display (110) operating in the first state based on confirming a maintenance of the size of the pupil through the eye tracking data.

[0054] For example, the above situation may include a time period during which the first state of the display (110) is maintained. For example, the processor (210) may taper the luminance of the peripheral region (320) from a high luminance near the foveated region (310) to a low luminance at the periphery of the peripheral region (320) at a luminance reduction rate determined at least in part based on the time period during which the first state of the display (110) is maintained. For example, the processor (210) may control the luminance of the peripheral region (320), such as in the state (330), by tapering the luminance of the peripheral region (320) at a first luminance reduction rate determined based on the first length of time. For example, the processor (210) may control the luminance of the peripheral area (320) as in state (340) by tapering the luminance of the peripheral area (320) at a second luminance reduction rate (e.g., the second luminance reduction rate higher than the first luminance reduction rate) determined based on a second length of time that is different from the first length (e.g., the second length longer than the first length).

[0055] For example, the processor (210) may increase the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) as the time elapses while the first state of the display (110) is maintained.

[0056] For example, the processor (210) may, in response to determining that a reference time has elapsed since the display (110) entered the first state, gradually increase the luminance reduction rate used to taper the luminance of the peripheral area (320) displayed on the display (110) according to the elapsed time during which the display (110) maintains the first state.

[0057] Referring to FIG. 4, the processor (210) can determine the foveated area (410) of the screen and the peripheral area (420) of the screen to control the brightness of the display (110) operating in the second state.

[0058] For example, the foveated area (410) may represent an area recognized or gazed upon by central vision. For example, the foveated area (410) may be determined based on eye tracking data regarding the gaze of one or more eyes of a user (e.g., user (190)) wearing the wearable device (100). For example, the foveated area (410) may represent a portion of the screen where the gaze corresponding to the central vision is located. For example, the foveated area (410) may represent a portion of the screen that is focused on by a user looking at the screen. For example, the foveated area (410) may be round, as illustrated in FIG. 4. For example, unlike the illustration in FIG. 4, the foveated area (410) may be rectangular or triangular. However, the present invention is not limited thereto. For example, the foveated area (410) may have a shape corresponding to the shape of an area recognized by central vision. The foveated area (410) may be referred to as a central area. As a non-limiting example, the size of the foveated area (410) may be substantially the same as the size of the foveated area (310). As a non-limiting example, the size of the foveated area (410) may be smaller than the size of the foveated area (310). For example, the foveated area (410) may be narrower than the foveated area (310). As a non-limiting example, the shape of the foveated area (410) may be substantially the same as the shape of the foveated area (310). As a non-limiting example, the shape of the foveated area (410) may be different from the shape of the foveated area (310).

[0059] For example, the peripheral region (420) may represent an area recognized or gazed upon by peripheral vision outside of the zone gazed upon by the fovea. For example, the peripheral region (420) may surround the foveated region (410). For example, the peripheral region (420) may represent a portion of the screen distinct from the foveated region (410). For example, the peripheral region (420) may represent a portion of the screen located outside the line of sight corresponding to the foveal vision. As a non-limiting example, the peripheral region (420) may represent a portion of the screen that is spaced apart from the position of the gaze by a distance greater than a reference distance. For example, the peripheral region (420) may represent a portion of the screen that is included in the field of view of a user looking at the screen but is not focused on by the user.

[0060] For example, the processor (210) may determine the foveated area (410) and the peripheral area (420) of the screen displayed on the display (110) operating in the second state. For example, the processor (210) may control the brightness of the peripheral area (420) to display the peripheral area (420) darker than the foveated area (410) while the screen is displayed on the display (110) operating in the second state. For example, the second state may represent a state of the display (110) that displays the peripheral area (420) darker than the foveated area (410) for low power consumption and (generally) consumes less power than the first state. For example, the first state and the second state have something in common in terms of being a state of the display (110) for low power consumption, but the second state, unlike the first state, may be a state of the display (110) in which the user perceives that the peripheral area (420) is darker than the foveated area (410). For example, the second state may represent a state of the display (110) that is focused on low power consumption rather than high visual quality. For example, the visual quality provided by the display (110) operating in the second state may be lower than the visual quality provided by the display (110) operating in the first state, but the power consumed by the display (110) operating in the second state may be (generally) lower than the power consumed by the display (110) operating in the first state. For example, the second state may represent a state of the display (110) that displays the peripheral area (420) at a level of brightness that does not cause discomfort to the user.For example, the probability that a user will recognize that a peripheral area (420) displayed on a display (110) operating in the second state is darker than a foveated area (410) displayed on a display (110) operating in the second state may be higher than the probability that a user will recognize that a peripheral area (320) displayed on a display (110) operating in the first state is darker than a foveated area (310) displayed on a display (110) operating in the first state.

[0061] For example, while the display (110) operates in the second state, the processor (210) may determine a foveated area of ​​a frame image for displaying the screen based on the eye tracking data, and display the foveated area (410) with a luminance corresponding to the grayscale values ​​of the foveated area of ​​the frame image. For example, while the display (110) operates in the second state, the processor (210) may determine a peripheral area of ​​the frame image based on the eye tracking data, and display the peripheral area (420) with a luminance lower than the grayscale values ​​of the peripheral area of ​​the frame image in order to display the peripheral area (420) darker than the foveated area (410). For example, the peripheral area (420) may be displayed on the display (110) operating in the second state by reducing the grayscale values ​​of the peripheral area of ​​the frame image. For another example, the peripheral area (420) can be displayed on the display (110) operating in the second state by providing the display panel (232) with voltage values ​​(or current values) that are lower than the grayscale values ​​of the peripheral area of ​​the frame image using the display driving circuit (231). For another example, the peripheral area (420) can be displayed on the display (110) operating in the second state by reducing the grayscale values ​​of the peripheral area of ​​the frame image and providing the display panel (232) with voltage values ​​(or current values) that are lower than the reduced grayscale values ​​using the display driving circuit (231).

[0062] For example, the processor (210) may control (or adjust) (or set) the luminance of the peripheral region (420) by tapering (or gradually decreasing) the luminance of the peripheral region (420) from higher luminance near the foveated region (410) to lower luminance at the periphery of the peripheral region (420) while the screen is displayed on the display (110) operating in the second state.

[0063] For example, the processor (210) may taper the luminance of the peripheral region (420) from a high luminance near the foveated region (410) to a low luminance at the periphery of the peripheral region (420) at a predetermined luminance reduction rate while the screen is displayed on the display (110) operating in the second state. For example, the predetermined luminance reduction rate may be maintained independently (or irrespective) of a change in the state of the screen. For example, the predetermined luminance reduction rate may be maintained independently (or irrespective) of a change in the state of a user wearing the wearable device (100).

[0064] As a non-limiting example, the predetermined luminance reduction rate is maintained regardless of changes in the state of the screen and / or changes in the state of the user, but the predetermined luminance reduction rate may be selected, determined, identified, or obtained as one candidate reduction rate among a plurality of candidate reduction rates in the reference data stored in the memory (220).

[0065] For example, the candidate reduction rate selected as the predetermined luminance reduction rate among the plurality of candidate reduction rates may correspond to the level of the rechargeable battery of the wearable device (100). For example, each of the plurality of candidate reduction rates may be linked to a range of the level of the rechargeable battery within the reference data. For example, the processor (210) may determine the predetermined luminance reduction rate used to taper the peripheral area (420) displayed on the display (110) operating in the second state as the first candidate reduction rate among the plurality of candidate reduction rates, based on confirming that the level of the rechargeable battery is within the first range. For example, the processor (210) may control the luminance of the peripheral region (420) as in the state (430) by tapering the luminance of the peripheral region (420) at the predetermined luminance reduction rate determined as the first candidate reduction rate according to the level within the first range. For example, the processor (210) may determine the predetermined luminance reduction rate used to tapere the peripheral region (420) displayed on the display (110) operating in the second state as a second candidate reduction rate among the plurality of candidate reduction rates, based on determining that the level of the rechargeable battery is within a second range that does not overlap with the first range. For example, the processor (210) can control the luminance of the peripheral area (420), such as in state (440), by tapering the luminance of the peripheral area (420) at the predetermined luminance reduction rate determined by the second candidate reduction rate according to the level within the second range.

[0066] Referring to FIG. 5, the processor (210) may disable displaying of a peripheral region (520) darker than a foveated region (510) for the display (110) operating in the third state. For example, the processor (210) may not execute determining (or acquiring) the foveated region (510) and the peripheral region (520) of the screen for controlling the brightness provided from the display (110) operating in the third state. For example, determining the foveated region (510) and the peripheral region (520) for controlling the brightness may be bypassed, skipped, blocked, or avoided while the display (110) operates in the third state. As a non-limiting example, determining the foveated region (510) and the peripheral region (520) while the display (110) operates in the third state may be disabled for controlling the brightness, but may be enabled for controlling the resolution.

[0067] For example, the processor (210) can set the brightness of the screen to a brightness corresponding to the grayscale values ​​of the frame image for displaying the screen while the display (110) operates in the third state, as illustrated in FIG. 5.

[0068] Referring again to FIG. 2, the processor (210) can change the state of the display (110) from one (a) of the plurality of states to another (another) of the plurality of states. For example, the processor (210) can change the state of the display (110) from the first state to the second state. The change from the first state to the second state is exemplified in the description of FIG. 6.

[0069] Figure 6 illustrates an exemplary method for changing the state of a display from a first state to a second state.

[0070] Referring to FIG. 6, in operation 601, the processor (210) may display a screen on the display (110) operating in the first state. For example, the processor (210) may display the screen, such as in state (330) or state (340).

[0071] In operation 602, the processor (210) may determine, identify, or monitor whether an event is detected while the display (110) is operating in the first state for displaying the screen. The event may be defined to change the state of the display (110) from the first state to the second state. For example, the event may include a change in the level of the rechargeable battery of the wearable device (100). For example, the event may include a rate at which power is reduced while the display (110) is operating in the first state being higher than a reference rate. For example, the event may include a number of blinks of one or more eyes of a user (e.g., user (190)) being lower than a reference rate. For example, the event may include a rate of gaze movement of one or more eyes of the user being lower than a reference rate. For example, the event may include obtaining the spatial information value higher than a threshold value. For example, the event may include obtaining the time information value higher than a threshold value.

[0072] For example, the processor (210) may execute operation 603 based on not detecting the event, and execute operation 604 based on detecting the event.

[0073] In operation 603, the processor (210) may maintain the state of the display (110) in the first state under the condition that the event is not detected. For example, the processor (210) may maintain the state of the display (110) in the first state until the event is detected.

[0074] For example, the processor (210) may maintain the state of the display (110) in the first state while confirming that the level of the rechargeable battery is higher than the reference level. For example, the processor (210) may maintain the state of the display (110) in the first state while confirming that the rate at which power is reduced while the display (110) operates in the first state is lower than the reference rate. For example, the processor (210) may maintain the state of the display (110) in the first state while confirming that the number of blinks of one or more eyes of a user (e.g., user (190)) is greater than the reference number. For example, the processor (210) may maintain the state of the display (110) in the first state while confirming that the rate of gaze movement of one or more eyes of a user (e.g., user (190)) is higher than the reference rate. For example, the processor (210) may maintain the state of the display (110) in the first state while acquiring the spatial information value lower than the threshold value. For example, the processor (210) may maintain the state of the display (110) in the first state while acquiring the time information value lower than the threshold value.

[0075] As a non-limiting example, while the first state of the display (110) is maintained, the processor (210) can adjust the size of the foveated area (310) and the size of the peripheral area (320). For example, the processor (210) can adjust the size of the foveated area (310) and the size of the peripheral area (320) based on a change in the state of the screen displayed on the display (110) operating in the first state. For example, the processor (210) can adjust the size of the foveated area (310) and the size of the peripheral area (320) based on a change in the state of a user (e.g., user (190)) that occurs while the display (110) is operating in the first state. For example, the processor (210) can adjust the size of the foveated area (310) and the size of the peripheral area (320) over time while the first state is maintained.

[0076] In operation 604, the processor (210) may change the state of the display (110) from the first state to the second state in response to the event detected according to operation 602.

[0077] For example, the processor (210) may change the state of the display (110) from the first state to the second state based on determining that the level of the rechargeable battery is lower than the reference level. For example, the processor (210) may change the state of the display (110) from the first state to the second state based on determining that the rate at which power is reduced while the display (110) is operating in the first state is higher than the reference rate. For example, the processor (210) may change the state of the display (110) from the first state to the second state based on determining that the number of blinks of one or more eyes of a user (e.g., user (190)) is less than the reference number. For example, the processor (210) may change the state of the display (110) from the first state to the second state based on determining that a rate of gaze movement of one or more eyes of a user (e.g., the user (190)) is lower than a reference rate. For example, the processor (210) may change the state of the display (110) from the first state to the second state based on obtaining the spatial information value higher than a threshold value. For example, the processor (210) may change the state of the display (110) from the first state to the second state based on obtaining the temporal information value higher than a threshold value. For example, the processor (210) may change the state of the display (110) from the first state to the second state based on determining that a length of time during which the state of the display (110) is maintained in the first state is longer than a reference length. For example, the processor (210) may change the state of the display (110) from the first state to the second state based on the usage history information of the user's wearable device (100). However, the present invention is not limited thereto.

[0078] For example, the processor (210) can display the screen, such as state (430) or state (440), on the display (110) that operates in the second state changed from the first state.

[0079] For example, the first state may be changed from the third state. As a non-limiting example, the processor (210) may change the state of the display (110) from the third state to the second state via the first state. Such a change is exemplified in the description of FIG. 7.

[0080] Figure 7 illustrates an exemplary method for changing a first state of a display changed from a third state to a second state.

[0081] Referring to FIG. 7, in operation 701, a screen can be displayed on the display (110) operating in the third state. For example, the processor (210) can display the screen as shown in FIG. 5.

[0082] At step 702, the processor (210) may determine, identify, or monitor whether another event is detected while the display (110) is operating in the third state for displaying the screen. The other event may be defined to change the state of the display (110) from the third state to the first state. For example, the other event may include a change in the level of the rechargeable battery of the wearable device (100). For example, the other event may include a rate at which power is reduced while the display (110) is operating in the first state being higher than another reference rate. For example, the other event may include a number of blinks of one or more eyes of a user (e.g., user (190)) being less than another reference number. For example, the other event may include a rate of gaze movement of one or more eyes of the user being lower than another reference rate. For example, the other event may include obtaining the spatial information value higher than another threshold value. For example, the other event may include obtaining the temporal information value higher than another threshold value. For example, the other event may include the length of time for which the screen is displayed on the display (110) operating in the third state reaches a reference length.

[0083] For example, the processor (210) may execute operation 703 based on not detecting the other event, and execute operation 704 based on detecting the other event.

[0084] In operation 703, the processor (210) may maintain the state of the display (110) in the third state under the condition that the other event is not detected. For example, the processor (210) may maintain the state of the display (110) in the third state until the other event is detected.

[0085] For example, the processor (210) can maintain the state of the display (110) in the third state while verifying that the level of the rechargeable battery is higher than another reference level (higher than the reference level exemplified for the level of the rechargeable battery in the description of FIG. 6). For example, the processor (210) can maintain the state of the display (110) in the third state while verifying that the rate at which power is reduced while the display (110) operates in the third state is lower than another reference rate (lower than the reference rate exemplified for the rate at which power is reduced in the description of FIG. 6). For example, the processor (210) can maintain the state of the display (110) in the third state while verifying that the number of blinks of one or more eyes of a user (e.g., user (190)) is greater than another reference number (more than the reference number exemplified for the number of blinks in the description of FIG. 6). For example, the processor (210) may maintain the state of the display (110) in the third state while determining that the rate of gaze movement of one or more eyes of a user (e.g., the user (190)) is higher than another reference rate (higher than the reference rate exemplified for the rate of gaze movement in the description of FIG. 6 ). For example, the processor (210) may maintain the state of the display (110) in the third state while obtaining the spatial information value that is lower than another threshold value (lower than the threshold value exemplified for the spatial information value in the description of FIG. 6 ). For example, the processor (210) may maintain the state of the display (110) in the third state while obtaining the temporal information value that is lower than another threshold value (lower than the threshold value exemplified for the temporal information value in the description of FIG. 6 ).

[0086] In operation 704, the processor (210) may change the state of the display (110) from the third state to the first state in response to the event detected according to operation 702.

[0087] For example, the processor (210) can change the state of the display (110) from the third state to the first state based on determining that the level of the rechargeable battery is lower than another reference level (higher than the reference level exemplified for the level of the rechargeable battery in the description of FIG. 6). For example, the processor (210) can change the state of the display (110) from the third state to the first state based on determining that the rate at which power is reduced while the display (110) is operating in the third state is higher than another reference rate (lower than the reference rate exemplified for the rate at which power is reduced in the description of FIG. 6). For example, the processor (210) may change the state of the display (110) from the third state to the first state based on determining that the number of blinks of one or more eyes of a user (e.g., the user (190)) is less than another reference number (more than the reference number exemplified for the number of blinks in the description of FIG. 6 ). For example, the processor (210) may change the state of the display (110) from the third state to the first state based on determining that the rate of gaze movement of one or more eyes of a user (e.g., the user (190)) is less than another reference rate (more than the reference rate exemplified for the rate of gaze movement in the description of FIG. 6 ). For example, the processor (210) may change the state of the display (110) from the third state to the first state based on obtaining the spatial information value higher than another threshold value (lower than the threshold value illustrated for the spatial information value in the description of FIG. 6).For example, the processor (210) may change the state of the display (110) from the third state to the first state based on obtaining the time information value higher than another threshold value (lower than the threshold value exemplified for the time information value in the description of FIG. 6). For example, the processor (210) may change the state of the display (110) from the third state to the first state based on determining that the length of time that the state of the display (110) is maintained in the third state is longer than a reference length. For example, the processor (210) may change the state of the display (110) from the third state to the first state based on usage history information of the user's wearable device (100). However, the present invention is not limited thereto.

[0088] For example, the processor (210) may display the screen, such as state (330) or state (340), on the display (110) that operates in the first state changed from the third state. For example, operation 704 may partially correspond to operation 601 of FIG. 6.

[0089] At operation 705, the processor (210) may determine whether the display (110) detects an event exemplified in the description of FIG. 6 while operating in the first state. For example, operation 705 may correspond to operation 602 of FIG. 6.

[0090] In operation 706, the processor (210) may maintain the state of the display (110) in the first state while the event does not occur. For example, operation 706 may correspond to operation 603 of FIG. 6.

[0091] In operation 707, the processor (210) may, in response to the occurrence of the event, change the state of the display (110) from the first state to the second state. For example, operation 707 may correspond to operation 604 of FIG. 6.

[0092] Referring again to FIG. 2, the processor (210) can change the state of the display (110) from the first state to the third state, depending on the state of execution of the software application. The change from the first state to the third state is exemplified in the description of FIG. 8.

[0093] FIG. 8 illustrates an exemplary method for changing the state of a display from a first state to a third state in response to a change in a software application that provides frame images used for display on the screen.

[0094] Referring to FIG. 8, in operation 801, the processor (210) may display a screen on the display (110) operating in the first state. For example, operation 801 may correspond to operation 601 of FIG. 6.

[0095] At operation 802, the processor (210) may determine whether a change in a software application that provides frame images used for displaying a screen is detected while the display (110) is operating in the first state. For example, since a change in the software application may cause a rapid change (or transition) of a screen displayed on the display (110), the processor (210) may determine whether a change in the software application is detected while the display (110) is operating in the first state.

[0096] For example, the processor (210) may execute operation 803 under a condition that a change in the software application is not detected, and may execute operation 804 under a condition that a change in the software application is detected.

[0097] In operation 803, the processor (210) may maintain the state of the display (110) in the first state while the software application is not changed. Although not shown in FIG. 8, the processor (210) may execute operations 602 and 603 of FIG. 6 while the software application is not changed.

[0098] At operation 804, the processor (210) may change the state of the display (110) from the first state to the third state in response to a change in the software application.

[0099] As described above, the change in the software application may cause a sudden change in the screen displayed on the display (110). As a non-limiting example, since displaying the screen that caused the sudden change on the display (110) operating in the first state may cause a decrease in visual quality, the processor (210) may change the state of the display (110) from the first state to the third state in response to the change in the software application.

[0100] For example, the wearable device (100) can maintain the visual quality of the screen by displaying the screen on the display (110) that operates in the third state changed from the first state.

[0101] At operation 805, the processor (210) may determine, identify, or monitor whether a reference time has elapsed since the first state changed to the third state in response to a change in the software application. If the processor (210) determines that the reference time has elapsed, the processor may execute operation 807, and if not, execute operation 806.

[0102] In operation 806, the processor (210) may maintain the state of the display (110) in the third state while the reference time has not elapsed. As a non-limiting example, although not illustrated in FIG. 8, the processor (210) may also execute operations 702 and 703 of FIG. 7 while the reference time has not elapsed.

[0103] At operation 807, the processor (210) may change the state of the display (110) from the third state to the first state based on determining that the reference time has elapsed. For example, since the reference time has elapsed since the software application was changed, which may indicate that the change from the third state to the first state is unnoticeable to the user, the processor (210) may change the state of the display (110) from the third state to the first state for low power consumption. For example, the processor (210) may display a screen on the display (110) operating in the first state.

[0104] Referring again to FIG. 2, as a non-limiting example, the wearable device (100) may not include the eye tracking circuit (240), or the eye tracking circuit (240) within the wearable device (100) may be deactivated. For example, if the eye tracking circuit (240) is unavailable, the processor (210) may determine the foveated area of ​​the screen and the peripheral area of ​​the screen without using the eye tracking data to control brightness while displaying a screen on the display (110) operating in the first state or the second state. For example, the processor (210) may determine the foveated area and the peripheral area based on obtaining information about the foveated area of ​​the screen from a software application that provides frame images for displaying the screen. For another example, the processor (210) may determine the foveated area and the peripheral area based on information about a reference field of view configured in the wearable device (100). For another example, the processor (210) may determine the foveated area and the peripheral area based on information acquired based on past usage history of the eye tracking circuit (240). For another example, the processor (210) may determine the foveated area and the peripheral area based on information about a field of view set according to a user input. For another example, the processor (210) may determine the foveated area and the peripheral area based on information about a region of interest (ROI) acquired using a trained model. As a non-limiting example, the model may be trained using fast R-CNN (regions with convolutional neural networks).

[0105] The operations exemplified in the above descriptions may be executed by an electronic device as well as a wearable device (e.g., a wearable device (100)). For example, the electronic device may be one of a laptop, smartphones having various form factors (e.g., a bar-type smartphone, a foldable-type smartphone, a multi-foldable-type smartphone, or a rollable-type smartphone), a tablet, a television, and other similar computing devices.

[0106] The operations exemplified in the above descriptions can be performed by an electronic device exemplified in the description below.

[0107] FIG. 9 is a block diagram of an electronic device (901) within a network environment (900) according to various embodiments. Referring to FIG. 9 , in the network environment (900), the electronic device (901) may communicate with the electronic device (902) via a first network (998) (e.g., a short-range wireless communication network), or may communicate with at least one of the electronic device (904) or the server (908) via a second network (999) (e.g., a long-range wireless communication network). In one embodiment, the electronic device (901) may communicate with the electronic device (904) via the server (908). According to one embodiment, the electronic device (901) may include a processor (920), a memory (930), an input module (950), an audio output module (955), a display module (960), an audio module (970), a sensor module (976), an interface (977), a connection terminal (978), a haptic module (979), a camera module (980), a power management module (988), a battery (989), a communication module (990), a subscriber identification module (996), or an antenna module (997). In some embodiments, the electronic device (901) may omit at least one of these components (e.g., the connection terminal (978)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (976), the camera module (980), or the antenna module (997)) may be integrated into one component (e.g., the display module (960)).

[0108] The processor (920) may, for example, execute software (e.g., a program (940)) to control at least one other component (e.g., a hardware or software component) of the electronic device (901) connected to the processor (920) and perform various data processing or operations. According to one embodiment, as at least a part of the data processing or operations, the processor (920) may store commands or data received from other components (e.g., a sensor module (976) or a communication module (990)) in a volatile memory (932), process the commands or data stored in the volatile memory (932), and store result data in a non-volatile memory (934). According to one embodiment, the processor (920) may include a main processor (921) (e.g., a central processing unit or an application processor) or an auxiliary processor (923) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together with the main processor (921). For example, when the electronic device (901) includes the main processor (921) and the auxiliary processor (923), the auxiliary processor (923) may be configured to use less power than the main processor (921) or to be specialized for a given function. The auxiliary processor (923) may be implemented separately from the main processor (921) or as a part thereof.

[0109] The auxiliary processor (923) may control at least a portion of functions or states associated with at least one component (e.g., a display module (960), a sensor module (976), or a communication module (990)) of the electronic device (901), for example, on behalf of the main processor (921) while the main processor (921) is in an inactive (e.g., sleep) state, or together with the main processor (921) while the main processor (921) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (923) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (980) or a communication module (990)). In one embodiment, the auxiliary processor (923) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (901) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (908)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0110] The memory (930) can store various data used by at least one component (e.g., the processor (920) or the sensor module (976)) of the electronic device (901). The data can include, for example, software (e.g., the program (940)) and input data or output data for commands related thereto. The memory (930) can include a volatile memory (932) or a non-volatile memory (934).

[0111] The program (940) may be stored as software in the memory (930) and may include, for example, an operating system (942), middleware (944), or an application (946).

[0112] The input module (950) can receive commands or data to be used in a component of the electronic device (901) (e.g., a processor (920)) from an external source (e.g., a user) of the electronic device (901). The input module (950) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0113] The audio output module (955) can output audio signals to the outside of the electronic device (901). The audio output module (955) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0114] The display module (960) can visually provide information to an external party (e.g., a user) of the electronic device (901). The display module (960) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In one embodiment, the display module (960) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0115] The audio module (970) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (970) can acquire sound through the input module (950), output sound through the sound output module (955), or an external electronic device (e.g., electronic device (902)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (901).

[0116] The sensor module (976) can detect the operating status (e.g., power or temperature) of the electronic device (901) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (976) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0117] The interface (977) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (901) with an external electronic device (e.g., the electronic device (902)). In one embodiment, the interface (977) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0118] The connection terminal (978) may include a connector through which the electronic device (901) may be physically connected to an external electronic device (e.g., the electronic device (902)). In one embodiment, the connection terminal (978) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0119] The haptic module (979) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (979) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0120] The camera module (980) can capture still images and videos. According to one embodiment, the camera module (980) may include one or more lenses, image sensors, image signal processors, or flashes.

[0121] The power management module (988) can manage the power supplied to the electronic device (901). According to one embodiment, the power management module (988) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0122] A battery (989) may power at least one component of the electronic device (901). In one embodiment, the battery (989) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0123] The communication module (990) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (901) and an external electronic device (e.g., electronic device (902), electronic device (904), or server (908)), and the performance of communication through the established communication channel. The communication module (990) may operate independently from the processor (920) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (990) may include a wireless communication module (992) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (994) (e.g., a local area network (LAN) communication module, or a power line communication module). Any of these communication modules may communicate with an external electronic device (904) via a first network (998) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (999) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (992) may use subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (996) to verify or authenticate the electronic device (901) within a communication network such as the first network (998) or the second network (999).

[0124] The wireless communication module (992) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency communications (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (992) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (992) may support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (992) may support various requirements specified in the electronic device (901), an external electronic device (e.g., the electronic device (904)), or a network system (e.g., the second network (999)). According to one embodiment, the wireless communication module (992) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0125] The antenna module (997) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (997) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (997) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (998) or the second network (999), may be selected from the plurality of antennas, for example, by the communication module (990). A signal or power may be transmitted or received between the communication module (990) and the external electronic device via the at least one selected antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (997).

[0126] According to various embodiments, the antenna module (997) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band.

[0127] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0128] According to one embodiment, commands or data may be transmitted or received between the electronic device (901) and an external electronic device (904) via a server (908) connected to a second network (999). Each of the external electronic devices (902 or 904) may be the same or a different type of device as the electronic device (901). According to one embodiment, all or part of the operations executed in the electronic device (901) may be executed in one or more of the external electronic devices (902, 904, or 908). For example, when the electronic device (901) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (901) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (901). The electronic device (901) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (901) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In one embodiment, the external electronic device (904) may include an Internet of Things (IoT) device. The server (908) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (904) or the server (908) may be included in the second network (999).The electronic device (901) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0129] FIG. 10 is a block diagram (1000) of a display module (960) according to various embodiments. Referring to FIG. 10, the display module (960) may include a display (1010) and a display driver IC (DDI) (1030) for controlling the display (1010). The DDI (1030) may include an interface module (1031), a memory (1033) (e.g., a buffer memory), an image processing module (1035), or a mapping module (1037). The DDI (1030) may receive image information including, for example, image data or an image control signal corresponding to a command for controlling the image data, from another component of the electronic device (901) through the interface module (1031). For example, according to one embodiment, image information may be received from a processor (920) (e.g., a main processor (921) (e.g., an application processor)) or an auxiliary processor (923) (e.g., a graphics processing unit) that operates independently of the function of the main processor (921). The DDI (1030) may communicate with a touch circuit (1050) or a sensor module (976) through the interface module (1031). In addition, the DDI (1030) may store at least a portion of the received image information in the memory (1033), for example, on a frame basis. The image processing module (1035) may, for example, perform preprocessing or postprocessing (e.g., resolution, brightness, or size adjustment) on at least a portion of the image data based at least on characteristics of the image data or characteristics of the display (1010). The mapping module (1037) may generate a voltage value or a current value corresponding to the image data that has been preprocessed or postprocessed through the image processing module (1035).According to one embodiment, the generation of voltage values ​​or current values ​​may be performed at least in part based on, for example, properties of pixels of the display (1010) (e.g., arrangement of pixels (RGB stripe or pentile structure), or size of each sub-pixel). At least some pixels of the display (1010) may be driven at least in part based on, for example, the voltage values ​​or current values, so that visual information (e.g., text, images, or icons) corresponding to the image data may be displayed through the display (1010).

[0130] According to one embodiment, the display module (960) may further include a touch circuit (1050). The touch circuit (1050) may include a touch sensor (1051) and a touch sensor IC (1053) for controlling the same. The touch sensor IC (1053) may control the touch sensor (1051) to detect, for example, a touch input or a hovering input for a specific location of the display (1010). For example, the touch sensor IC (1053) may detect a touch input or a hovering input by measuring a change in a signal (e.g., voltage, light quantity, resistance, or charge quantity) for a specific location of the display (1010). The touch sensor IC (1053) may provide information (e.g., location, area, pressure, or time) regarding the detected touch input or hovering input to the processor (920). According to one embodiment, at least a portion of the touch circuit (1050) (e.g., touch sensor IC (1053)) may be included as part of the display driver IC (1030), or as part of the display (1010), or as part of another component (e.g., auxiliary processor (923)) disposed external to the display module (960).

[0131] According to one embodiment, the display module (960) may further include at least one sensor (e.g., a fingerprint sensor, an iris sensor, a pressure sensor, or an illuminance sensor) of the sensor module (976), or a control circuit therefor. In this case, the at least one sensor or the control circuit therefor may be embedded in a part of the display module (960) (e.g., the display (1010) or the DDI (1030)) or a part of the touch circuit (1050). For example, when the sensor module (976) embedded in the display module (960) includes a biometric sensor (e.g., a fingerprint sensor), the biometric sensor may obtain biometric information (e.g., a fingerprint image) associated with a touch input through a part of the display (1010). For another example, if the sensor module (976) embedded in the display module (960) includes a pressure sensor, the pressure sensor may obtain pressure information associated with a touch input through a portion or the entire area of ​​the display (1010). According to one embodiment, the touch sensor (1051) or the sensor module (976) may be disposed between pixels of a pixel layer of the display (1010), or above or below the pixel layer.

[0132] As described above, a wearable device (e.g., wearable device (100)) may include an eye tracking circuit (e.g., eye tracking circuit (240)) configured to obtain eye tracking data regarding the gaze of one or more eyes, a display (e.g., display (110)), and a processor (e.g., processor (210)). The processor may be configured to determine, based on the eye tracking data, a foveated area of ​​a screen displayed on the display and a peripheral area of ​​the screen surrounding the foveated area, and to control the luminance of the peripheral area to display the peripheral area darker than the foveated area while the screen is displayed on the display operating in a first state, and to control the luminance of the peripheral area to display the peripheral area darker than the peripheral area displayed on the display operating in the first state while the screen is displayed on the display operating in a second state for lower power consumption than the first state.

[0133] For example, the wearable device may include a rechargeable battery. For example, the processor may be configured to check the level of the rechargeable battery, maintain the state of the display in the first state while checking that the level is higher than a reference level, and change the state of the display from the first state to the second state based on checking that the level is lower than the reference level.

[0134] For example, the processor may be configured to determine a rate at which power is reduced while the display is operating in the first state, maintain the state of the display in the first state while determining the rate is lower than a reference rate, and change the state of the display from the first state to the second state based on determining the rate is higher than the reference rate.

[0135] For example, the eye tracking data may include data regarding the number of blinks of the one or more eyes. For example, the processor may be configured to maintain the state of the display in the first state while determining that the number of blinks is greater than a reference number, and change the state of the display from the first state to the second state based on determining that the number of blinks is less than the reference number.

[0136] For example, the eye tracking data may include data regarding the rate of movement of the gaze. For example, the processor may be configured to maintain the state of the display in the first state while determining that the rate is higher than a reference rate, and change the state of the display from the first state to the second state based on determining that the rate is lower than the reference rate.

[0137] For example, the processor may be configured to obtain a spatial information value representing a spatial distribution of brightness values ​​of a foveated area within each of the frame images used for the screen to be displayed within the first state, maintain the state of the display in the first state while obtaining the spatial information value lower than a threshold value, and change the state of the display from the first state to the second state based on obtaining the spatial information value higher than the threshold value.

[0138] For example, the processor may be configured to obtain a time information value representing temporal changes of a foveated area within each of the frame images used for the screen to be displayed within the first state, maintain the state of the display in the first state while obtaining the time information value lower than a threshold value, and change the state of the display from the first state to the second state based on obtaining the time information value higher than the threshold value.

[0139] For example, the processor may be configured to control the luminance of the peripheral region by tapering the luminance of the peripheral region from a higher luminance near the foveated region to a lower luminance at the periphery of the peripheral region at a luminance reduction rate determined based on the state of the screen while the screen is displayed on the display operating in the first state, and to control the luminance of the peripheral region by tapering the luminance of the peripheral region from a high luminance near the foveated region to a lower luminance at the periphery of the peripheral region at a predetermined luminance reduction rate while the screen is displayed on the display operating in the second state.

[0140] For example, the processor may be configured to obtain a spatial information value representing a spatial distribution of brightness values ​​of a foveated area within each of frame images used for the screen to be displayed on the display operating in the first state, and determine, based on obtaining a first value as the spatial information value, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state as a first reduction rate, and determine, based on obtaining a second value higher than the first value as the spatial information value, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state as a second reduction rate higher than the first reduction rate.

[0141] For example, the processor may be configured to obtain a time information value indicating a temporal change in a foveated area within each of the frame images used for the screen to be displayed on the display operating in the first state, and determine, based on obtaining a first value as the time information value, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state as a first reduction rate, and determine, based on obtaining a second value higher than the first value as the time information value, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state as a second reduction rate higher than the first reduction rate.

[0142] For example, the processor may be configured to obtain an average luminance for the screen based on grayscale values ​​of each of the frame images used for the screen to be displayed on the display operating in the first state and at least one brightness value according to a setting of the display, and to determine, based on the average luminance, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state.

[0143] For example, the processor may be configured to obtain a first average grayscale value of a foveated region of each of the frame images used for the screen to be displayed on the display operating in the first state, obtain a second average grayscale value of a peripheral region of each of the frame images used for the screen to be displayed on the display operating in the first state, determine the luminance reduction rate used to taper the luminance of the peripheral region displayed on the display operating in the first state as a first reduction rate based on the first average grayscale value being higher than the second average grayscale value, and determine the luminance reduction rate used to taper the luminance of the peripheral region displayed on the display operating in the first state as a second reduction rate being higher than the first reduction rate based on the first average grayscale value being lower than the second average grayscale value.

[0144] For example, the processor may be configured to obtain an average grayscale value of a peripheral region of each of the frame images used for the screen to be displayed on the display operating in the first state, and increase the luminance reduction rate used to taper the luminance of the peripheral region displayed on the display operating in the first state based on confirming a decrease in the average grayscale value, and decrease the luminance reduction rate used to taper the luminance of the peripheral region displayed on the display operating in the first state based on confirming an increase in the average grayscale value.

[0145] For example, the processor may be configured to obtain eye tracking data including data about a size of a pupil of the one or more eyes while the screen is displayed on the display operating in the first state, and based on determining an increase in the size of the pupil, increase the luminance reduction rate used to taper the luminance of the peripheral region displayed on the display operating in the first state, and based on determining a decrease in the size of the pupil, decrease the luminance reduction rate used to taper the luminance of the peripheral region displayed on the display operating in the first state.

[0146] For example, the processor may be configured to increase the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state over time while the first state is maintained.

[0147] For example, the processor may be configured to, in response to determining that a reference time has elapsed since entering the first state, gradually increase the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state based on the elapsed time during which the first state is maintained.

[0148] For example, the predetermined luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the second state can be maintained independently of a change in the state of the screen.

[0149] For example, the processor may be configured to check a level of the rechargeable battery, and, while the screen is displayed on the display operating in the second state, determine a candidate reduction rate corresponding to the level from among a plurality of candidate reduction rates in the reference data stored in the memory, as the predetermined brightness reduction rate.

[0150] For example, the foveated area displayed on the display operating in the first state may be wider than the foveated area displayed on the display operating in the second state.

[0151] For example, the processor may be configured to adjust the size of the foveated area displayed on the display operating in the first state and the size of the peripheral area displayed on the display operating in the first state based on the state of the screen.

[0152] For example, the processor may be configured to adjust the size of the foveated area displayed on the display operating in the first state and the size of the peripheral area displayed on the display operating in the first state based further on the state of the user wearing the wearable device while the screen is displayed on the display operating in the first state.

[0153] For example, displaying the peripheral area darker than the foveated area may be disabled while the display is operating in a third state for performance.

[0154] For example, the processor may be configured to change the state of the display from the first state to the third state in response to a change in a software application that provides frame images used for displaying the screen while the screen is displayed on the display operating in the first state.

[0155] As described above, a wearable device (e.g., wearable device (100)) may include a memory (e.g., memory (220)) configured to store instructions, an eye tracking circuit (e.g., eye tracking circuit (240)) configured to obtain eye tracking data regarding the gaze of one or more eyes, a display (e.g., display (110)), and a processor (e.g., processor (210)). The processor determines, based on the eye tracking data, a foveated area of ​​a screen displayed on the display and a peripheral area of ​​the screen surrounding the foveated area, and, within a first state for lower power consumption of the display, displays the peripheral area dimmer than the foveated area by tapering the luminance of the peripheral area from a higher luminance near the foveated area to a lower luminance at the periphery of the peripheral area using a luminance reduction rate determined based on the state of the screen, and, within a second state for low power consumption of the display, displays the peripheral area dimmer than the foveated area by tapering the luminance of the peripheral area from a high luminance near the foveated area to a lower luminance at the periphery of the peripheral area using a predetermined luminance reduction rate. It can be configured to run.

[0156] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.

[0157] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0158] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0159] Various embodiments of the present document may be implemented as software (e.g., a program (940)) including one or more instructions stored in a storage medium (e.g., an internal memory (936) or an external memory (938)) readable by a machine (e.g., an electronic device (901)). For example, a processor (e.g., a processor (920)) of the machine (e.g., an electronic device (901)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0160] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0161] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In wearable devices, A memory that stores instructions and includes one or more storage media; An eye tracking circuit configured to acquire eye tracking data relating to the gaze of one or more eyes; display; and At least one processor including a processing circuit, wherein the instructions, when individually or collectively executed by the at least one processor, Based on the eye tracking data, a foveated area of ​​a screen displayed on the display and a peripheral area of ​​the screen surrounding the foveated area are determined, While the above screen is displayed on the display operating in the first state, the brightness of the peripheral area is controlled to display the peripheral area darker than the foveated area, While the screen is displayed on the display operating in a second state for lower power consumption than the first state, control the brightness of the peripheral area so as to display the peripheral area darker than the peripheral area displayed on the display operating in the first state. causing the above wearable device, Wearable devices.

2. In claim 1, Including a rechargeable battery, The above instructions, when individually or collectively executed by the at least one processor, Check the level of the above rechargeable battery, While confirming the above level higher than the reference level, the state of the above display is maintained in the first state, Based on determining that the level is lower than the reference level, change the state of the display from the first state to the second state. causing the above wearable device, Wearable devices.

3. In claim 1, the instructions, when individually or collectively executed by the at least one processor, Determine the rate at which power is reduced while the display is operating in the first state; While checking the rate lower than the reference rate, the state of the display is maintained in the first state, Based on determining that the rate is higher than the reference rate, change the state of the display from the first state to the second state. causing the above wearable device, Wearable devices.

4. In claim 1, the eye tracking data is: Contains data on the number of blinks of one or more of the eyes; The above instructions, when individually or collectively executed by the at least one processor, While checking the above number of times greater than the reference number, the state of the display is maintained in the first state, Based on verifying that the number of times is less than the above reference number, change the state of the display from the first state to the second state. causing the above wearable device, Wearable devices.

5. In claim 1, the eye tracking data is: Contains data on the rate of movement of the above gaze, The above instructions, when individually or collectively executed by the at least one processor, While checking the rate higher than the reference rate, the state of the display is maintained in the first state, Based on determining that the rate is lower than the reference rate, change the state of the display from the first state to the second state. causing the above wearable device, Wearable devices.

6. In claim 1, the instructions, when individually or collectively executed by the at least one processor, Obtaining a spatial information value representing the spatial distribution of brightness values ​​of a foveated area within each of the frame images used for the screen to be displayed on the display operating in the first state, While obtaining the spatial information value lower than the threshold value, the state of the display is maintained in the first state, Based on obtaining the spatial information value higher than the threshold value, change the state of the display from the first state to the second state. causing the above wearable device, Wearable devices.

7. In claim 1, the instructions, when individually or collectively executed by the at least one processor, Obtaining a time information value representing temporal changes in a foveated area within each of the frame images used for the screen to be displayed on the display operating in the first state; While obtaining the time information value lower than the threshold value, the state of the display is maintained in the first state, Based on obtaining the time information value higher than the threshold value, change the state of the display from the first state to the second state. causing the above wearable device, Wearable devices.

8. In claim 1, the instructions, when individually or collectively executed by the at least one processor, While the screen is displayed on the display operating in the first state, the luminance of the peripheral region is controlled by tapering the luminance from higher luminance near the foveated region to lower luminance at the periphery of the peripheral region at a luminance reduction rate determined based on the state of the screen, While the screen is displayed on the display operating in the second state, the luminance of the peripheral region is controlled by tapering the luminance from high luminance near the foveated region to low luminance at the outskirts of the peripheral region at a predetermined luminance reduction rate. causing the above wearable device, Wearable devices.

9. In claim 8, the instructions, when individually or collectively executed by the at least one processor, Obtaining a spatial information value representing the spatial distribution of brightness values ​​of a foveated area within each of the frame images used for the screen to be displayed on the display operating in the first state, Based on obtaining the first value as the spatial information value, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state is determined as the first reduction rate, Based on obtaining a second value higher than the first value as the spatial information value, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state is determined to be a second reduction rate higher than the first reduction rate. causing the above wearable device, Wearable devices.

10. In claim 8, the instructions, when individually or collectively executed by the at least one processor, Obtaining a time information value representing the temporal change of the foveated area within each of the frame images used for the screen to be displayed on the display operating in the first state, Based on obtaining the first value as the time information value, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state is determined as the first reduction rate, Based on obtaining a second value higher than the first value as the time information value, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state is determined to be a second reduction rate higher than the first reduction rate. causing the above wearable device, Wearable devices.

11. In claim 8, the instructions, when individually or collectively executed by the at least one processor, Based on the grayscale values ​​of each of the frame images used for the screen to be displayed on the display operating in the first state and at least one brightness value according to the setting of the display, an average brightness for the screen is obtained, Based on the above average luminance, determine the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state. causing the above wearable device, Wearable devices.

12. In claim 8, the instructions, when individually or collectively executed by the at least one processor, Obtaining a first average grayscale value of a foveated area of ​​each of the frame images used for the screen to be displayed on the display operating in the first state, Obtaining a second average grayscale value of a peripheral area of ​​each of the frame images used for the screen to be displayed on the display operating in the first state, Based on the first average grayscale value being higher than the second average grayscale value, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state is determined as the first reduction rate, Based on the first average grayscale value being lower than the second average grayscale value, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state is determined to be a second reduction rate higher than the first reduction rate. causing the above wearable device, Wearable devices.

13. In claim 8, the instructions, when individually or collectively executed by the at least one processor, Obtaining an average grayscale value of a peripheral area of ​​each of the frame images used for the screen to be displayed on the display operating in the first state, Based on the determination of a decrease in the average grayscale value, increasing the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state, Based on the confirmation of the increase in the above average grayscale value, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state is reduced. causing the above wearable device, Wearable devices.

14. In claim 8, the instructions, when individually or collectively executed by the at least one processor, While the screen is displayed on the display operating in the first state, acquiring the eye tracking data including data on the size of the pupil of the one or more eyes, Based on the confirmation of the increase in the size of the pupil, increasing the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state, Based on the confirmation of the decrease in the size of the pupil, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state is reduced. causing the above wearable device, Wearable devices.

15. In claim 8, the instructions, when individually or collectively executed by the at least one processor, As the time elapses while the first state is maintained, the luminance reduction rate used to taper the luminance of the peripheral area displayed on the display operating in the first state is increased. causing the above wearable device, Wearable devices.

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