Display device and electronic device including the same

Abstract

The present invention provides a display device and an electronic device including the same that can alleviate dizziness experienced by a user when using a virtual reality display device. [Solution] An embodiment of the present specification includes a timing control unit that generates video data based on an input video corresponding to the user's gaze, and a display panel that displays video based on the video data. The timing control unit includes a mode control unit that receives motion information corresponding to the user's gaze and controls the drive mode based on the amount of change in the motion information and the amount of change in the input video corresponding to the change in the user's gaze, and a video processing unit that processes the input video. Depending on the drive mode, at least some of the multiple modules included in the video processing unit are deactivated.

Description

Technical Field

[0001] This specification relates to a display device and an electronic device including the same, and more particularly, to a display device capable of improving a user's dizziness and an electronic device including the same.

Background Art

[0002] Currently, as the information age has arrived, the field of display devices that visually display electrical information signals is rapidly developing. The display device can be embodied as a small, medium, or large electronic device such as a television, a set-top box, a navigation device, a video player, a Blu-ray player, a personal computer, a wearable device, a mobile phone, and a virtual reality display device.

[0003] On the other hand, a virtual reality display device has an advantage that it can immerse a user in an environment that mimics and reproduces reality as it is. For this purpose, a user of a virtual reality display device wears equipment capable of information exchange such as goggles, a headset, gloves, special clothing, etc., and comes into contact with a virtual environment.

[0004] However, when a user uses a virtual reality display device, compared to a general display device, the human eye and the virtual reality display device are positioned closer to each other, and the degree to which a human visually accepts a screen becomes very large. However, when a human movement and a change in the screen corresponding to the movement do not match, so-called virtual reality sickness or dizziness occurs. Such virtual reality sickness gives a great discomfort to a user of virtual reality and acts as a problem that limits the usage time of virtual reality.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The problem to be solved by this specification is to provide a display device capable of improving a user's dizziness and an electronic device including the same.

[0006] The problems that this specification seeks to solve are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0007] A display device according to one embodiment of this specification includes a timing control unit that generates video data based on an input video corresponding to the user's gaze, and a display panel that displays video based on the video data. The timing control unit includes a mode control unit that receives motion information corresponding to the user's gaze and controls the drive mode based on the amount of change in the motion information and the amount of change in the input video corresponding to the change in the user's gaze, and a video processing unit that processes the input video. Depending on the drive mode, at least some of the multiple modules included in the video processing unit may be deactivated.

[0008] An electronic device according to one embodiment of this specification includes a processor that generates an input image corresponding to the user's gaze, a timing control unit that rearranges the input image to generate video data, a display device that includes a display panel that displays the image based on the video data, and a sensor that detects motion information corresponding to the user's gaze. The timing control unit includes a mode control unit that controls the drive mode of the display device based on the amount of change in motion information and the amount of change in the input image corresponding to the change in the user's gaze, and a video processing unit that processes the input image. Depending on the drive mode, at least some of the multiple modules included in the video processing unit may be deactivated.

[0009] An electronic device according to one embodiment of this specification includes a processor that generates an input image corresponding to the user's gaze, a timing control unit that rearranges the input image to generate video data, a display device including a display panel that displays the image based on the video data, a sensor that detects motion information corresponding to the user's gaze, and a memory that stores at least one look-up table (LUT). The timing control unit includes a mode control unit that controls the drive mode of the display device based on the amount of change in motion information and the amount of change in the input image corresponding to the change in the user's gaze, and a video processing unit that processes the input image. Depending on the drive mode, at least some of the multiple modules included in the video processing unit may interrupt communication with the memory.

[0010] Specific details of other embodiments are included in the detailed description and drawings.

[0011] The embodiments of this specification allow the electronic device to be driven in a first mode or a second mode based on the amount of change in motion information due to changes in the user's gaze and the amount of change in the input video.

[0012] In the embodiments of this specification, the electronic device can be driven in a first mode in which a compensation algorithm for the input video is performed and the video is displayed when the amount of change in motion information is less than a first threshold, or when the amount of change in motion information is greater than or equal to the first threshold but the amount of change in the input video is less than a second threshold, and in a second mode in which the video is displayed without performing a separate compensation algorithm for the input video when the amount of change in motion information is greater than or equal to the first threshold and the amount of change in the input video is greater than or equal to the second threshold.

[0013] The embodiments described herein can alleviate virtual reality sickness or dizziness that may occur due to user movement.

[0014] The effects relating to the examples in this specification are not limited to those exemplified above, and a wider variety of effects are included in this specification. [Brief explanation of the drawing]

[0015] [Figure 1] This figure shows an electronic device according to one embodiment of this specification. [Figure 2] This is a block diagram showing an electronic device according to one embodiment of this specification. [Figure 3] Figure 2 is a block diagram showing an example of a timing control unit included in the electronic device. [Figure 4a] This figure illustrates an example of how the electronic device shown in Figure 2 is driven. [Figure 4b] This figure illustrates an example of how the electronic device shown in Figure 2 is driven. [Figure 4c] This figure illustrates an example of how the electronic device shown in Figure 2 is driven. [Figure 5] This is a flowchart showing a method for driving an electronic device according to one embodiment of this specification. [Modes for carrying out the invention]

[0016] The advantages and features of this specification, and the methods for achieving them, will become clearer with reference to the examples described below in detail with the accompanying drawings. However, this specification is not limited to the examples disclosed below, but can be embodied in a variety of different forms, and these examples are provided merely to make the disclosure of this specification complete and to fully inform a person with ordinary skill in the art to which this specification belongs.

[0017] The shapes, areas, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of this specification are exemplary, and this specification is not limited to the matters illustrated. Throughout the specification, the same reference numerals refer to the same components. Also, when explaining this specification, if it is determined that a detailed description of related known technologies may obscure the gist of this specification, the detailed description thereof will be omitted. When terms such as "including," "having," "being made," etc. mentioned in this specification are used, unless "only" is used, other parts can be added. When a component is expressed in the singular, it includes the case of including a plurality unless there is a specific description to the contrary.

[0018] When interpreting a component, it is interpreted as including an error range even without a separate explicit description.

[0019] Also, although the first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are merely used to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical idea of this specification.

[0020] Throughout the specification, the same reference numerals refer to the same components.

[0021] The area and thickness of each configuration shown in the drawings are shown for convenience of explanation, and this specification is not necessarily limited to the area and thickness of the shown configuration.

[0022] The respective features of the various embodiments of this specification can be partially or wholly combined or combined with each other, enabling various technical linkages and drives, and each embodiment may be implemented independently of each other or may be implemented together in a related relationship.

[0023] Hereinafter, this specification will be described with reference to the drawings.

[0024] Figure 1 shows an electronic device according to one embodiment of this specification.

[0025] Referring to Figure 1, one embodiment of the electronic device 10 according to this specification may be embodied in a head-mounted display (HMD). A head-mounted display is an example of a wearable electronic device that is mounted on the user's head or can be embodied in a see-through form that provides augmented reality (AR) and / or a see-closed form that provides virtual reality (VR). However, this is merely illustrative, and the electronic device 10 may be embodied in a variety of display devices other than a head-mounted display.

[0026] As shown in Figure 1, when the electronic device 10 is implemented in a head-mounted display, the electronic device 10 may include a housing case RCS and a band BND.

[0027] The storage case RCS can house a display device, etc., which is included in the electronic device 10 and displays images.

[0028] The band BND can be fixed to the storage case RCS and wrap around the top and sides of the user's head, but is not limited to this, and the form and shape of the band BND can be modified. Depending on the embodiment, the band BND is for securing a head-mounted display to the user's head and may be replaced by a variety of other structures such as eyeglass frames or helmet forms.

[0029] Figure 2 is a block diagram showing an electronic device according to one embodiment of this specification.

[0030] Referring to Figure 2, an electronic device 10 according to one embodiment of this specification may include a display device 100, a processor 200, a memory 300, a power supply unit 400, and a sensor 500.

[0031] The processor 200 can control the electronic device 10. For example, the processor 200 is connected to other components of the electronic device 10 through interfaces such as an address bus, a control bus, and a data bus, and can execute software to control at least one other component of the electronic device 10 connected to the processor 200, such as a hardware or software component, and perform various data processing or calculations.

[0032] The processor 200 can generate and output input video RGB. The processor 200 can convert the input video RGB digital video data into a format suitable for display by the display device 100 and output it to the display device 100. The processor 200 can also generate input control signals CS and output them to the display device 100. For example, the input control signals CS may include timing signals such as a horizontal synchronization signal, a vertical synchronization signal, a data enable signal, and a clock signal.

[0033] The display device 100 can visually provide information to an external party (e.g., a user) outside of the electronic device 10. To this end, the display device 100 may include a timing control unit 110, a gate drive unit 120, a data drive unit 130, and a display panel 140.

[0034] The display panel 140 can generate an image to be provided to the user. For example, the display panel 140 may include a plurality of pixels PX, each of which has a pixel circuit. Each of the plurality of pixels PX is connected to a corresponding gate line GL and data line DL, and can display an image in response to a gate signal provided to the gate line GL and a data signal provided to the data line DL.

[0035] The timing control unit 110 can control the gate drive unit 120 and the data drive unit 130 based on the input video RGB and the control signal CS. For example, the timing control unit 110 can generate a gate control signal GCS and a data control signal DCS based on the control signal CS provided by the processor 200. The gate control signal GCS may be provided to the gate drive unit 120, and the data control signal DCS may be provided to the data drive unit 130.

[0036] Furthermore, the timing control unit 110 can rearrange the input video RGB in digital video data format provided by the processor 200 to match the resolution of the display panel 140 to generate video data DATA, and provide it to the data drive unit 130.

[0037] The timing control unit 110 may include a video processing unit 111. The video processing unit 111 can process the input video RGB provided by the processor 200. For example, the video processing unit 111 can perform at least one of the following compensation algorithms on the input video RGB: for example, a luminance-based compensation algorithm or a voltage-based compensation algorithm. As a result, the video data DATA provided to the data drive unit 130 may be generated by rearranging the input video RGB to which the compensation algorithm has been applied.

[0038] On the other hand, while Figure 2 shows that the video processing unit 111 is included in the timing control unit 110, the embodiments of this specification are not limited thereto. For example, the video processing unit 111 may be included in the processor 200.

[0039] Depending on the embodiment, the timing control unit 110 can be implemented in various circuits and electronic components such as FPGAs (Field Programmable Gate Arrays), ICs (Integrated Circuits), and ASICs (Application Specific Integrated Circuits). Furthermore, the timing control unit 110 can send and receive signals with other components through one or more predetermined interfaces and may include one or more storage media such as registers. For example, the interface may include, but is not limited to, an LVDS (Low Voltage Differential Signaling) interface, an EPI (Embedded Clock Point-Point Interface), or an SPI (Serial Peripheral Interface).

[0040] The gate drive unit 120 can generate gate signals based on the gate control signal GCS and output gate signals to multiple gate lines GL. For example, the gate drive unit 120 can sequentially output gate signals to multiple gate lines GL.

[0041] The data drive unit 130 can convert the digital video data DATA provided by the timing control unit 110 into an analog data signal based on the data control signal DCS and supply it to multiple data lines DL.

[0042] The memory 300 can store data necessary for the operation of the electronic device 10. For example, the memory 300 may include, but is not limited to, non-volatile memory devices such as flash memory devices, EPROM (Erasable Programmable Read-Only Memory) devices, EEPROM (Electrically Erasable Programmable Read-Only Memory) devices, PRAM (Phase Change Random Access Memory) devices, RRAM (Resistance Random Access Memory) devices, NFGM (Nano Floating Gate Memory) devices, PoRAM (Polymer Random Access Memory) devices, MRAM (Magnetic Random Access Memory), FRAM (Ferroelectric Random Access Memory) devices, etc., and / or volatile memory devices such as DDR (Double Data Rate) memory devices, DRAM (Dynamic Random Access Memory) devices, SRAM (Static Random Access Memory) devices, mobile DRAM devices, etc.

[0043] The memory 300 can communicate with other components of the electronic device 10, such as the display device 100 and the processor 200, through the memory interface.

[0044] The power supply unit 400 can supply drive voltage and current to the display device 100, for example, the timing control unit 110, the display panel 140, the gate drive unit 120, the data drive unit 130, etc., and / or control the supplied voltage and current. For example, the power supply unit 400 may include a Power Management Integrated Circuit (PMIC), etc.

[0045] The sensor 500 can sense the movement of the electronic device 10 and detect and generate motion information MTD corresponding to the user's gaze. For example, the sensor 500 may be, but is not limited to, a motion sensor that includes at least one of a gyro sensor, an accelerometer, and a gravity sensor.

[0046] The sensor 500 can generate and output motion information MTD for every frame of the displayed video, but is not limited to this. For example, the sensor 500 can generate and output motion information MTD for every half frame of the displayed video, or for every two or more frames of the displayed video.

[0047] On the other hand, when the electronic device 10 is implemented as a head-mounted display as described with reference to Figure 1, the display device that shows virtual reality and / or augmented reality images may be positioned very close to the user's eyes compared to a general display device. In this case, the degree to which the user visually accepts the images increases relatively, but if the user's movements and the resulting changes on the screen do not match, the user may experience VR sickness or dizziness. For example, if the user turns their head and their gaze changes, the display device included in the electronic device must display an image on the display panel that corresponds to the changed gaze. However, due to the time required for communication, signal processing, etc., of the display device, the image corresponding to the user's gaze may be displayed relatively late, which may cause the user to experience VR sickness.

[0048] As a result, in one embodiment of this specification, when movement of the electronic device 10, i.e., movement of the user's gaze, occurs based on motion information MTD output from the sensor 500, the electronic device 10 can be driven in a first mode or a second mode by comparing the amount of change in motion information MTD with a first threshold and the amount of change in input video RGB with a second threshold, and the electronic device 10 and / or display device 100 can be driven in a first mode or a second mode based on the comparison result.

[0049] For example, the electronic device 10 can drive the display device 100 in a first mode, which performs a compensation algorithm for the input video RGB and displays the video, if the amount of change in the motion information MTD is less than a first threshold, or if the amount of change in the motion information MTD is greater than or equal to the first threshold but the amount of change in the input video RGB is less than a second threshold. If the amount of change in the motion information MTD is greater than or equal to the first threshold and the amount of change in the input video RGB is greater than or equal to the second threshold, the display device 100 can drive the display device 100 in a second mode, which displays the video without performing a separate compensation algorithm for the input video RGB. As an example, in the first mode, all of the modules included in the video processing unit 111 are activated, and in the second mode, at least some of the modules included in the video processing unit 111 may be deactivated.

[0050] As a result, if a change in gaze occurs due to the user's movement, and the corresponding change in the image exceeds a pre-set threshold—for example, if the degree of mismatch between the user's movement and the resulting screen change is such that it causes virtual reality sickness—the electronic device 10 according to one embodiment of this specification can drive the display device 100 in a second mode that displays the image without performing a separate compensation algorithm. In this case, the time required for communication, signal processing, etc., of the electronic device 10 or the display device 100 is reduced, and the degree of mismatch between the user's movement and the resulting screen change can be improved. Therefore, virtual reality sickness that may occur due to the user's movement can be improved.

[0051] In the following sections, please refer to Figures 3 through 4c for a more detailed explanation.

[0052] Figure 3 is a block diagram showing an example of a timing control unit included in the electronic device shown in Figure 2.

[0053] Referring to Figures 2 and 3, the timing control unit 110 may include a video processing unit 111, a mode control unit 112, a setting register 113, a memory interface 114, a scheduler 115, a receiving unit 116, and a transmitting unit 117.

[0054] On the other hand, Figure 3 shows that the video processing unit 111, mode control unit 112, setting register 113, memory interface 114, and scheduler 115 are included in the timing control unit 110, but the embodiments of this specification are not limited thereto. For example, at least one of the video processing unit 111, mode control unit 112, setting register 113, memory interface 114, and scheduler 115 may be included in the processor 200.

[0055] The video processing unit 111 can perform at least one of the following compensation algorithms for the input video RGB: for example, a luminance-based compensation algorithm and a voltage-based compensation algorithm.

[0056] For this purpose, in one embodiment, the video processing unit 111 may include, but is not limited to, a de-gamma conversion unit 1111, a first compensation unit 1112, a gamma conversion unit 1113, a digital gamma conversion unit 1114, a second compensation unit 1115, a data conversion unit 1116, and a dithering unit 1117.

[0057] The degamma conversion unit 1111 can perform degamma processing on the gradation data (pixel data) of the input video RGB. For example, the degamma conversion unit 1111 can convert the gradation data of the input video RGB into luminance data based on a gradation-to-luminance conversion look-up table (LUT) (hereinafter referred to as the "first look-up table") provided from the memory 300 through the memory interface 114.

[0058] The RGB gradation data of the input video input to the degamma conversion unit 1111 may include, but are not limited to, red gradation data, green gradation data, and blue gradation data. Depending on the embodiment, the degamma conversion unit 1111 may expand the number of bits for each hue in the red gradation data, green gradation data, and blue gradation data, taking into account the perceived brightness, but are not limited to this.

[0059] The first compensation unit 1112 receives the luminance data of the input video RGB that is converted and output from the degamma conversion unit 1111, and can perform the first calculation processing necessary for the luminance-based compensation algorithm on the luminance data of the input video RGB. For example, the luminance-based compensation algorithm may include a power consumption reduction algorithm for the display device 100, an afterimage compensation algorithm, a color temperature compensation algorithm, etc., but this is merely illustrative, and the embodiments described herein are not limited thereto.

[0060] The gamma conversion unit 1113 can receive the output data of the first compensation unit 1112, for example, the input video RGB luminance data on which the first calculation processing necessary for the luminance-based compensation algorithm has been performed, and perform gamma processing on it. For example, the gamma conversion unit 1113 can convert the input video RGB luminance data back into gradation data based on a luminance-to-gradation conversion lookup table (hereinafter referred to as the "second lookup table") or a gamma correction curve provided from the memory 300 through the memory interface 114. As a result, the input video RGB gradation data output from the gamma conversion unit 1113 may be gradation data that reflects the luminance-based compensation algorithm.

[0061] The digital gamma conversion unit 1114 can perform digital gamma processing on the output data of the gamma conversion unit 1113, for example, the gradation data (pixel data) of the input video RGB that reflects the luminance-based compensation algorithm. For example, the digital gamma conversion unit 1114 can convert the gradation data of the input video RGB into voltage data based on a gradation-to-voltage conversion lookup table (hereinafter referred to as the "third lookup table") provided from the memory 300 through the memory interface 114.

[0062] The second compensation unit 1115 receives the voltage data of the input video RGB that is converted and output from the digital gamma conversion unit 1114, and can perform the second calculation processing necessary for the voltage-based compensation algorithm on the voltage data of the input video RGB. For example, the voltage-based compensation algorithm may include the video display performance algorithm of the display panel 140, a camera compensation algorithm, an afterimage compensation algorithm, an external compensation algorithm, etc., but this is merely illustrative and the embodiments described herein are not limited thereto.

[0063] The data conversion unit 1116 receives the output data from the second compensation unit 1115, for example, the voltage data of the input video RGB after the second calculation processing required for the voltage-based compensation algorithm has been performed, and can convert the voltage data back into grayscale data. For example, the data conversion unit 1116 can convert the voltage data of the input video RGB back into grayscale data based on a voltage-to-grayscale conversion lookup table (hereinafter referred to as the "fourth lookup table") provided from the memory 300 through the memory interface 114. As a result, the grayscale data of the input video RGB output from the data conversion unit 1116 may be grayscale data that reflects both the luminance-based compensation algorithm and the voltage-based compensation algorithm.

[0064] On the other hand, the above description has been based on the premise that the degamma conversion unit 1111, the gamma conversion unit 1113, the digital gamma conversion unit 1114, and the data conversion unit 1116 perform data domain conversion processing based on the first lookup table, the second lookup table, the third lookup table, and the fourth lookup table, respectively, received from the memory 300. However, the embodiments described herein are not limited thereto. For example, at least one of the degamma conversion unit 1111, the gamma conversion unit 1113, the digital gamma conversion unit 1114, and the data conversion unit 1116 can utilize a function expression for data domain conversion processing.

[0065] On the other hand, in at least part of the data processing process of the de-gamma conversion unit 1111, the first compensation unit 1112, the gamma conversion unit 1113, the digital gamma conversion unit 1114, the second compensation unit 1115, and the data conversion unit 1116, an expansion or decrease in the number of bits of the digital data may occur. Here, when the number of bits decreases, a quantization error may occur due to the LSB (Least Significant Bit). As a result, in some embodiments, at least one of the de-gamma conversion unit 1111, the first compensation unit 1112, the gamma conversion unit 1113, the digital gamma conversion unit 1114, the second compensation unit 1115, and the data conversion unit 1116 can perform an error diffusion algorithm that reflects such errors in the surrounding pixel data to improve image quality.

[0066] The dithering unit 1117 performs a dithering operation to increase the grayscale resolution of the input video RGB, and can output the dithered input video RGB data through the transmission unit 117. In this embodiment, the dithering unit 1117 can perform at least one of the following: spatial dithering operation to adjust the grayscale data for adjacent pixels PX to express a grayscale with a higher number of bits than the number of bits of each grayscale data; and temporal dithering operation to adjust the grayscale data in adjacent frames to express a grayscale with a higher number of bits than the number of bits of each grayscale data.

[0067] In one embodiment, the dithering unit 1117 can perform dithering on input video RGB for which a compensation algorithm has been performed, or on input video RGB for which a compensation algorithm has not been performed, depending on the drive mode of the electronic device 10 or the display device 100. For example, in the first mode of the display device 100, the dithering unit 1117 can generate and output an input video (hereinafter referred to as "first compensated input video RGBa") for which a compensation algorithm, for example, a luminance-based compensation algorithm and a voltage-based compensation algorithm, has been performed on the gradation data of the input video RGB through the sequential operation of the degamma conversion unit 1111, the first compensation unit 1112, the gamma conversion unit 1113, the digital gamma conversion unit 1114, the second compensation unit 1115, and the data conversion unit 1116. As another example, in the second mode of the display device 100, the dithering unit 1117 can receive the input video RGB directly from the mode control unit 112 or the receiving unit 116, and generate and output an input video (hereinafter referred to as "second compensated input video RGBb") by performing a dithering operation on the gradation data of the corresponding input video RGB. This will be explained in detail below along with the operation of the mode control unit 112.

[0068] The mode control unit 112 can control the drive mode of the electronic device 10 and / or display device 100 based on motion information MTD and input video RGB.

[0069] For example, the mode control unit 112 can compare the amount of change in motion information MTD provided from the sensor 500 through the setting register 113 with a first threshold, and compare the amount of change in input video RGB provided from the processor 200 through the receiving unit 116 with a second threshold. Here, the first threshold may be set to the minimum value of the position change of the electronic device 10 that could cause virtual reality sickness or dizziness depending on the degree of the user's gaze movement, and the second threshold may be set to the minimum value of the data change in input video RGB that could cause virtual reality sickness or dizziness depending on the degree of video change due to the user's gaze movement. The first and second thresholds may be values ​​that have been set based on experiments, etc., but this is merely illustrative, and the embodiments described herein are not limited thereto, and the first and second thresholds may be determined through calculation formulas, algorithms, etc. that reflect human cognitive abilities, etc.

[0070] In one embodiment, the mode control unit 112 can compare the amount of change in motion information MTD for each frame of the displayed video with a first threshold and compare the amount of change in input video RGB with a second threshold. That is, the mode control unit 112 can determine the drive mode of the display device 100 for each frame of the displayed video. However, this is merely illustrative, and the embodiments of this specification are not limited thereto. For example, the mode control unit 112 can also determine the drive mode of the display device 100 for every half frame of the displayed video, or for every two or more frames of the displayed video.

[0071] In one embodiment, the mode control unit 112 can drive the display device 100 in a first mode or a second mode based on the comparison result. For example, the mode control unit 112 can drive the display device 100 in the second mode if the change amount of motion information MTD is greater than or equal to a first threshold and the change amount of input video RGB is greater than or equal to a second threshold, and drive the display device 100 in the first mode otherwise.

[0072] For example, the mode control unit 112 can drive the display device 100 in a first mode, which displays the image by performing a compensation algorithm on the input image RGB when the amount of change in the motion information MTD is less than a first threshold. In this case, the image processing unit 111 can perform a compensation algorithm on the input image RGB, for example, at least one of a luminance-based compensation algorithm or a voltage-based compensation algorithm, and then perform a dithering operation on the compensated input image RGB to generate and output a first compensated input image RGBa.

[0073] Specifically, in the first mode of the display device 100, the mode control unit 112 can provide the input video RGB received from the receiving unit 116 to the de-gamma conversion unit 1111 of the video processing unit 111. In this case, the compensation algorithm, for example, a luminance-based compensation algorithm and a voltage-based compensation algorithm, is executed by the sequential operation of the de-gamma conversion unit 1111, the first compensation unit 1112, the gamma conversion unit 1113, the digital gamma conversion unit 1114, the second compensation unit 1115, and the data conversion unit 1116, and the first compensated input video RGBa can be generated and output through the operation of the dithering unit 1117. Thus, in the first mode of the display device 100, all components or modules included in the video processing unit 111 that execute the compensation algorithm can operate sequentially to generate the first compensated input video RGBa.

[0074] Furthermore, the mode control unit 112 can drive the display device 100 in a first mode that displays an image by executing a compensation algorithm for the input image RGB, even if the amount of change in the motion information MTD is greater than or equal to a first threshold, but the amount of change in the input image RGB is less than a second threshold. In this case, the image processing unit 111 can execute a compensation algorithm for the input image RGB, for example, at least one of a luminance-based compensation algorithm or a voltage-based compensation algorithm, and then perform a dithering operation on the compensated input image RGB to generate and output a first compensated input image RGBa.

[0075] In contrast, the mode control unit 112 can drive the display device 100 in a second mode that displays the image without performing a separate compensation algorithm for the input image RGB if the amount of change of the motion information MTD is greater than or equal to a first threshold and the amount of change of the input image RGB is greater than or equal to a second threshold. In this case, the image processing unit 111 can generate and output a second compensated input image RGBb by performing only dithering operations without performing a separate compensation algorithm for the input image RGB.

[0076] Specifically, in the second mode of the display device 100, the mode control unit 112 can provide the input video RGB received from the receiving unit 116 to the dithering unit 1117 of the video processing unit 111. In this case, the degamma conversion unit 1111, the first compensation unit 1112, the gamma conversion unit 1113, the digital gamma conversion unit 1114, the second compensation unit 1115, and the data conversion unit 1116 are deactivated and do not operate, and the dithering unit 1117 directly receives the input video RGB from the mode control unit 112 or the receiving unit 116, and the second compensated input video RGBb can be generated and output through the dithering operation. Thus, in the second mode of the display device 100, all components or modules included in the video processing unit 111 that perform the compensation algorithm, except for the dithering unit 1117, are deactivated, and the second compensated input video RGBb can be generated.

[0077] On the other hand, as mentioned above, if the movements of the user wearing the electronic device 10 do not match the resulting changes on the screen, the user may experience virtual reality sickness or dizziness. For example, depending on human cognitive abilities, it may take approximately 10ms to 20ms of time or latency for a person to recognize the space or screen corresponding to the change in gaze caused by eye movement. As a result, if the user turns their head and a change in gaze occurs, the display device 100 included in the electronic device 10 worn by the user will only prevent the user from experiencing virtual reality sickness or dizziness if it displays an image corresponding to the user's changed gaze on the display panel 140 within 10ms.

[0078] Here, if a change in the user's gaze occurs, the time (latency) for the changed image to be displayed may correspond to the sum of the time (latency) for the processor 200 to generate the input image RGB corresponding to the user's changed gaze and the image processing time (latency) of the timing control unit 110, for example, the image processing unit 111. However, as the amount of change in the image data increases due to the change in the user's gaze, both the time (latency) for the processor 200 to generate the input image RGB corresponding to the user's changed gaze and the image processing time (latency) of the image processing unit 111 increase, which may cause the user to experience virtual reality sickness or dizziness.

[0079] In the case of the electronic device 10 according to one embodiment of this specification, when a user turns their head and a change in gaze occurs, if the amount of change in the video data corresponding to the changed gaze is greater than or equal to a previously set value, that is, if the amount of change in the motion information MTD is greater than or equal to a first threshold and the amount of change in the input video RGB is greater than or equal to a second threshold, all components or modules included in the video processing unit 111 that perform the compensation algorithm, except for the dithering unit 1117, can be deactivated to reduce the time required for data domain conversion processing of the input video RGB and application of the compensation algorithm, thereby preventing the user from experiencing virtual reality sickness or dizziness due to changes in gaze.

[0080] On the other hand, if the user's gaze changes, and this causes a change in the image, the user's ability to perceive image quality becomes relatively lower. As a result, as mentioned above, even if the component or module included in the image processing unit 111 that performs the compensation algorithm is deactivated in the second mode of the display device 100, and the image quality is relatively reduced, the user will not be able to perceive the reduction in image quality.

[0081] Referring to Figure 3, the configuration register 113 stores the configuration value or configuration code of the timing control unit 110, and the timing control unit 110 can control each component or module according to the configuration value or configuration code stored in the configuration register 113. For example, the video processing unit 111, the mode control unit 112, and the memory interface 114 can be controlled according to the configuration value or configuration code stored in the configuration register 113.

[0082] Furthermore, the setting register 113 can receive and store motion information MTD from the sensor 500 and provide it to the mode control unit 112.

[0083] The memory interface 114 can perform communication between the timing control unit 110 and the memory 300. For example, the memory interface 114 can perform communication between the video processing unit 111 and / or the setting register 113 and the memory 300.

[0084] In one embodiment, the memory interface 114 can provide the video processing unit 111 with the necessary data from the memory 300 to the degamma conversion unit 1111, the first compensation unit 1112, the gamma conversion unit 1113, the digital gamma conversion unit 1114, the second compensation unit 1115, and the data conversion unit 1116, which are included in the video processing unit 111. For example, the degamma conversion unit 1111, the gamma conversion unit 1113, the digital gamma conversion unit 1114, and the data conversion unit 1116 can each receive the first lookup table, the second lookup table, the third lookup table, and the fourth lookup table from the memory 300 through the memory interface 114, and the first compensation unit 1112 and the second compensation unit 1115 can each receive the data necessary for the compensation algorithm from the memory 300 through the memory interface 114.

[0085] As mentioned above, when the display device 100 is driven in the second mode, all components or modules included in the video processing unit 111 that perform the compensation algorithm are deactivated, except for the dithering unit 1117. Therefore, the time required for communication between the degamma conversion unit 1111, the first compensation unit 1112, the gamma conversion unit 1113, the digital gamma conversion unit 1114, the second compensation unit 1115, and the data conversion unit 1116 and the memory 300 can also be reduced. For example, if the memory 300 is implemented as a non-volatile memory device, such as a flash memory device, and stores various compensation data, lookup tables, algorithm control settings, etc., it will require more data communication time compared to a volatile memory device. Even if the memory 300 is implemented as a volatile memory device, such as a DDR memory device, in the case of high-resolution video, the amount of video data is relatively large, so it may require more data communication time. However, in the second mode of the display device 100, the components or modules of the video processing unit 111 are deactivated, so the time required for communication between the video processing unit 111 and the memory 300 can also be reduced. This makes it possible to more effectively prevent the user from experiencing virtual reality sickness or dizziness due to changes in gaze.

[0086] The scheduler 115 can be implemented mechanically or electronically. For example, the scheduler 115 may be implemented as a hardware circuit or as an instruction or register configuration in a sequence generated by software. The scheduler 115 can be linked to and manage various components or modules within the timing control unit 110.

[0087] In the first mode of the display device 100 that performs the compensation algorithm operation for the input video RGB according to the embodiment, the Scheduler (core) Operating of the scheduler 115 is performed. In the second mode of the display device 100 where no separate compensation algorithm operation is performed for the input video RGB, the Scheduler Shut down of the scheduler 115 can be performed.

[0088] FIGS. 4A to 4C are diagrams for explaining an example in which the electronic device of FIG. 2 is driven.

[0089] First, referring to FIGS. 3 and 4A, when the line of sight of the user USER moves from the first line of sight ST1 to the second line of sight ST2, the sensor 500 included in the electronic device 10 worn by the user USER can generate the first motion information MTD1 corresponding to the first line of sight ST1 and the second motion information MTD2 corresponding to the second line of sight ST2.

[0090] Here, when the change amount of the motion information MTD due to the change in the line of sight of the user USER, for example, the difference between the first motion information MTD1 and the second motion information MTD2 is less than the first threshold value TH1 (shown as "|MTD1 - MTD2| < TH1" in FIG. 4A), the display device 100 can be driven in the first mode.

[0091] On the other hand, when the change amount of the motion information MTD due to the change in the line of sight of the user USER is less than the first threshold value TH1, regardless of the change amount of the input video RGB, for example, the difference between the first input video RGB1 corresponding to the first line of sight ST1 and the second input video RGB2 corresponding to the second line of sight ST2, the display device 100 can be driven in the first mode.

[0092] Next, referring to FIGS. 3 and 4b, when the user USER's line of sight moves from the third line of sight ST3 to the fourth line of sight ST4, the sensor 500 included in the electronic device 10 worn by the user USER can generate third motion information MTD3 corresponding to the third line of sight ST3 and fourth motion information MTD4 corresponding to the fourth line of sight ST4.

[0093] Here, even if the change amount of the motion information MTD due to the change in the user USER's line of sight, for example, the difference between the third motion information MTD3 and the fourth motion information MTD4 is greater than or equal to the first threshold value TH1 (shown as "|MTD3 - MTD4| ≧ TH1" in FIG. 4b), but the change amount of the input video RGB, for example, the difference between the third input video RGB3 corresponding to the third line of sight ST3 and the fourth input video RGB4 corresponding to the fourth line of sight ST4 is less than the second threshold value TH2 (shown as "|RGB3 - RGB4| < TH2" in FIG. 4b), the display device 100 can be driven in the first mode.

[0094] Next, referring to FIGS. 3 and 4c, when the user USER's line of sight moves from the fifth line of sight ST5 to the sixth line of sight ST6, the sensor 500 included in the electronic device 10 worn by the user USER can generate fifth motion information MTD5 corresponding to the fifth line of sight ST5 and sixth motion information MTD6 corresponding to the sixth line of sight ST6.

[0095] Here, if the amount of change in motion information MTD due to the user's gaze change, for example, the difference between the 5th motion information MTD5 and the 6th motion information MTD6, is greater than or equal to the first threshold TH1 (shown as "|MTD5-MTD6|≧TH1" in Figure 4c), and the amount of change in input video RGB, for example, the difference between the 5th input video RGB5 corresponding to the 5th gaze ST5 and the 6th input video RGB6 corresponding to the 6th gaze ST6, is greater than or equal to the second threshold TH2 (shown as "|RGB5-RGB6|≧TH2" in Figure 4c), then the electronic device 10 can drive the display device 100 in the second mode. As a result, even if the amount of change in the video due to the user's gaze change is large, the time required for data domain conversion processing of the input video RGB, application of the compensation algorithm, and communication between the video processing unit 111 and the memory 300 can be reduced, thereby preventing (eliminating) virtual reality sickness or dizziness for the user due to gaze changes.

[0096] Figure 5 is a flowchart showing a method for driving an electronic device according to one embodiment of this specification.

[0097] Referring to Figures 2 to 5, the driving method of the electronic device in Figure 5 can be performed on the electronic device 10 described with reference to Figures 2 to 4c. For example, the driving method of the electronic device in Figure 5 may be substantially the same as the operation of the timing control unit 110 described with reference to Figures 2 to 4c. Therefore, explanations that overlap with those described with reference to Figures 2 to 4c will not be repeated.

[0098] First, referring to Figure 5, the driving method of the electronic device in Figure 5 allows for comparison of the change amount ΔMTD of motion information MTD with the first threshold TH1 (S501).

[0099] Here, if the change amount ΔMTD of the motion information MTD is less than the first threshold TH1, the driving method of the electronic device in Figure 5 can drive the electronic device 10 or the display device 100 in the first mode (S502).

[0100] Furthermore, if the change amount ΔMTD of the motion information MTD is greater than or equal to the first threshold TH1, the driving method of the electronic device in Figure 5 can compare the change amount ΔRGB of the input video RGB with the second threshold TH2 (S503).

[0101] Here, if the change amount ΔRGB of the input video RGB is less than the second threshold TH2, the driving method of the electronic device in Figure 5 can drive the electronic device 10 or the display device 100 in the first mode (S502).

[0102] In contrast, if the change amount ΔRGB of the input video RGB is greater than or equal to the second threshold TH2, the driving method of the electronic device shown in Figure 5 can drive the electronic device 10 or the display device 100 in the second mode (S504).

[0103] The display devices according to the embodiments of this specification can be described as follows.

[0104] A display device according to one embodiment of this specification includes a timing control unit that generates video data based on an input video corresponding to the user's gaze, and a display panel that displays video based on the video data. The timing control unit includes a mode control unit that receives motion information corresponding to the user's gaze and controls the drive mode based on the amount of change in the motion information and the amount of change in the input video corresponding to the change in the user's gaze, and a video processing unit that processes the input video. Depending on the drive mode, at least some of the multiple modules included in the video processing unit may be deactivated.

[0105] According to other features of this specification, in a first mode where the amount of change in motion information is less than a first threshold or the amount of change in the input video is less than a second threshold, all of the modules included in the video processing unit are activated, and in a second mode where the amount of change in motion information is greater than or equal to the first threshold and the amount of change in the input video is greater than or equal to the second threshold, at least some of the modules included in the video processing unit may be deactivated.

[0106] The electronic devices according to the embodiments of this specification can be described as follows.

[0107] An electronic device according to one embodiment of this specification includes a processor that generates an input image corresponding to the user's gaze, a timing control unit that rearranges the input image to generate video data, a display device that includes a display panel that displays the image based on the video data, and a sensor that detects motion information corresponding to the user's gaze. The timing control unit includes a mode control unit that controls the drive mode of the display device based on the amount of change in motion information and the amount of change in the input image corresponding to the change in the user's gaze, and a video processing unit that processes the input image. Depending on the drive mode, at least some of the multiple modules included in the video processing unit may be deactivated.

[0108] According to other features of this specification, the mode control unit can drive the display device in a first mode if the amount of change in motion information is less than a first threshold or the amount of change in the input video is less than a second threshold, and can drive the display device in a second mode if the amount of change in motion information is greater than or equal to the first threshold and the amount of change in the input video is greater than or equal to the second threshold.

[0109] According to other features of this specification, in the first mode, all of the modules included in the video processing unit are activated, and in the second mode, at least some of the modules included in the video processing unit may be deactivated.

[0110] According to other features of this specification, the video processing unit may include a degamma conversion unit that converts the grayscale data of an input video into luminance data, a first compensation unit that performs a first calculation on the luminance data of the input video output from the degamma conversion unit, a gamma conversion unit that converts the luminance data of the input video after the first calculation has been performed into grayscale data, a digital gamma conversion unit that converts the grayscale data of the input video output from the gamma conversion unit into voltage data, a second compensation unit that performs a second calculation on the voltage data of the input video output from the digital gamma conversion unit, a data conversion unit that converts the voltage data of the input video after the second calculation has been performed into grayscale data, and a dithering unit that performs dithering on the grayscale data of the input video output from the data conversion unit.

[0111] According to other features of this specification, in the first mode, the de-gamma converter, the first compensation unit, the gamma converter, the digital gamma converter, the second compensation unit, and the data converter can all be activated.

[0112] According to another feature of this specification, in the first mode, the input video output from the processor may be provided to the degamma converter.

[0113] According to other features of this specification, in the second mode, at least one of the de-gamma converter, first compensation unit, gamma converter, digital gamma converter, second compensation unit, and data converter can be deactivated.

[0114] According to another feature of this specification, in the second mode, the input video output from the processor may be provided to the dithering unit.

[0115] According to other features of this specification, the electronic device further includes a memory for storing at least one look-up table (LUT), and the timing control unit may further include a memory interface for communicating between the memory and the video processing unit.

[0116] According to other features of this specification, in the first mode, the de-gamma converter, the first compensation unit, the gamma converter, the digital gamma converter, the second compensation unit, and the data converter can all communicate with memory through the memory interface.

[0117] According to other features of this specification, in the second mode, at least one of the de-gamma converter, first compensation unit, gamma converter, digital gamma converter, second compensation unit, and data converter can have its communication with memory interrupted.

[0118] According to other features of this specification, the memory may include a first lookup table for grayscale-to-luminance domain conversion of the input video, a second lookup table for luminance-to-grayscale domain conversion of the input video, a third lookup table for grayscale-to-voltage domain conversion of the input video, and a fourth lookup table for voltage-to-grayscale domain conversion of the input video.

[0119] According to other features of this specification, a first lookup table may be provided to the de-gamma conversion unit through a memory interface, a second lookup table may be provided to the gamma conversion unit through a memory interface, a third lookup table may be provided to the digital gamma conversion unit through a memory interface, and a fourth lookup table may be provided to the data conversion unit through a memory interface.

[0120] An electronic device according to one embodiment of this specification includes a processor that generates an input image corresponding to the user's gaze, a timing control unit that rearranges the input image to generate video data, a display device including a display panel that displays the image based on the video data, a sensor that detects motion information corresponding to the user's gaze, and a memory that stores at least one look-up table (LUT). The timing control unit includes a mode control unit that controls the drive mode of the display device based on the amount of change in motion information and the amount of change in the input image corresponding to the change in the user's gaze, and a video processing unit that processes the input image. Depending on the drive mode, at least some of the multiple modules included in the video processing unit may have their communication with the memory interrupted.

[0121] According to other features of this specification, the mode control unit can drive the display device in a first mode if the amount of change in motion information is less than a first threshold or the amount of change in the input video is less than a second threshold, and can drive the display device in a second mode if the amount of change in motion information is greater than or equal to the first threshold and the amount of change in the input video is greater than or equal to the second threshold.

[0122] According to other features of this specification, in the first mode, all of the modules included in the video processing unit communicate with memory, and in the second mode, communication with memory may be interrupted for at least some of the modules included in the video processing unit.

[0123] According to other features of this specification, the memory may include a first lookup table for grayscale-to-luminance domain conversion of the input video, a second lookup table for luminance-to-grayscale domain conversion of the input video, a third lookup table for grayscale-to-voltage domain conversion of the input video, and a fourth lookup table for voltage-to-grayscale domain conversion of the input video.

[0124] According to other features of this specification, the video processing unit may include a degamma conversion unit that converts the gradation data of an input video into luminance data based on a first lookup table, a first compensation unit that performs a first calculation on the luminance data of the input video output from the degamma conversion unit, a gamma conversion unit that converts the luminance data of the input video after the first calculation has been performed into gradation data based on a second lookup table, a digital gamma conversion unit that converts the gradation data of the input video output from the gamma conversion unit into voltage data based on a third lookup table, a second compensation unit that performs a second calculation on the voltage data of the input video output from the digital gamma conversion unit, a data conversion unit that converts the voltage data of the input video after the second calculation has been performed into gradation data based on a fourth lookup table, and a dithering unit that performs dithering on the gradation data of the input video output from the data conversion unit.

[0125] Although embodiments of this specification have been described in more detail above with reference to the attached drawings, this specification is not necessarily limited to these embodiments and can be modified and implemented in various ways within the scope of the technical concept of this specification. Accordingly, the embodiments disclosed herein are for illustrative purposes only, not to limit the technical concept of this specification, and the scope of the technical concept of this specification is not limited by such embodiments. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive.

Claims

1. A timing control unit that generates video data based on input video corresponding to the user's gaze, and A display panel that displays video based on the aforementioned video data. Includes, The timing control unit, A mode control unit that receives motion information corresponding to the user's gaze, and controls the drive mode based on the amount of change in the motion information corresponding to the change in the user's gaze and the amount of change in the input video, and The video processing unit that processes the input video. Includes, A display device in which, by the aforementioned driving mode, at least some of the multiple modules included in the video processing unit are deactivated.

2. In the first mode, where the amount of change in the motion information is less than a first threshold or the amount of change in the input video is less than a second threshold, all of the modules included in the video processing unit are activated. The display device according to claim 1, wherein in a second mode in which the amount of change in the motion information is greater than or equal to a first threshold and the amount of change in the input video is greater than or equal to a second threshold, at least a portion of the plurality of modules included in the video processing unit are deactivated.

3. A processor that generates input video corresponding to the user's gaze. A timing control unit that rearranges the input video to generate video data, and a display device that includes a display panel that displays the video based on the video data, and A sensor that detects motion information corresponding to the user's gaze. Includes, The timing control unit, A mode control unit that controls the drive mode of the display device based on the amount of change in the motion information corresponding to the change in the user's gaze and the amount of change in the input video, and The video processing unit that processes the input video. Includes, An electronic device in which, by the aforementioned driving mode, at least some of the multiple modules included in the video processing unit are deactivated.

4. The electronic device according to claim 3, wherein the mode control unit drives the display device in a first mode when the amount of change of the motion information is less than a first threshold or the amount of change of the input video is less than a second threshold, and drives the display device in a second mode when the amount of change of the motion information is equal to or greater than the first threshold and the amount of change of the input video is equal to or greater than the second threshold.

5. In the first mode, all of the modules included in the video processing unit are activated. The electronic device according to claim 4, wherein in the second mode, at least a portion of the plurality of modules included in the video processing unit are deactivated.

6. The aforementioned video processing unit, A degamma conversion unit that converts the gradation data of the input video into luminance data. A first compensation unit performs a first calculation process on the brightness data of the input video output from the degamma conversion unit. A gamma conversion unit that converts the brightness data of the input video from which the first calculation process has been performed into grayscale data. A digital gamma conversion unit converts the gradation data of the input video output from the gamma conversion unit into voltage data. A second compensation unit performs a second calculation process on the voltage data of the input video output from the digital gamma conversion unit. A data conversion unit that converts the voltage data of the input video from which the second calculation process has been performed into grayscale data, and The electronic device according to claim 4, further comprising a dithering unit that performs dithering on the grayscale data of the input video output from the data conversion unit.

7. The electronic device according to claim 6, wherein in the first mode, the degamma conversion unit, the first compensation unit, the gamma conversion unit, the digital gamma conversion unit, the second compensation unit, and the data conversion unit are all activated.

8. The electronic device according to claim 6, wherein in the first mode, the input video output from the processor is provided to the degamma converter.

9. The electronic device according to claim 6, wherein in the second mode, at least one of the degamma conversion unit, the first compensation unit, the gamma conversion unit, the digital gamma conversion unit, the second compensation unit, and the data conversion unit is deactivated.

10. The electronic device according to claim 6, wherein in the second mode, the input video output from the processor is provided to the dithering unit.

11. Memory to store at least one lookup table (LUT). It further includes, The electronic device according to claim 6, wherein the timing control unit further includes a memory interface for communication between the memory and the video processing unit.

12. The electronic device according to claim 11, wherein in the first mode, the degamma conversion unit, the first compensation unit, the gamma conversion unit, the digital gamma conversion unit, the second compensation unit, and the data conversion unit all communicate with the memory through the memory interface.

13. The electronic device according to claim 11, wherein in the second mode, at least one of the degamma conversion unit, the first compensation unit, the gamma conversion unit, the digital gamma conversion unit, the second compensation unit, and the data conversion unit interrupts communication with the memory.

14. The aforementioned memory is A first lookup table for grayscale-luminance domain conversion of the input video, A second lookup table for brightness-to-grayscale domain conversion of the aforementioned input video, A third lookup table for grayscale-to-voltage domain conversion of the input video, and Fourth lookup table for voltage-to-grayscale domain conversion of the input video. The electronic device according to claim 11, including the electronic device according to claim 11.

15. The first lookup table is provided to the degamma conversion unit through the memory interface, The second lookup table is provided to the gamma conversion unit through the memory interface, The third lookup table is provided to the digital gamma conversion unit through the memory interface, The electronic device according to claim 14, wherein the fourth lookup table is provided to the data conversion unit through the memory interface.

16. A processor that generates input video corresponding to the user's gaze. A timing control unit that rearranges the input video to generate video data, and a display device that includes a display panel that displays the video based on the video data, A sensor that detects motion information corresponding to the user's gaze, and Memory to store at least one lookup table (LUT). Includes, The timing control unit, A mode control unit that controls the drive mode of the display device based on the amount of change in the motion information corresponding to the change in the user's gaze and the amount of change in the input video, and The video processing unit that processes the input video. Includes, An electronic device in which, depending on the drive mode, at least some of the multiple modules included in the video processing unit have their communication with the memory interrupted.

17. The electronic device according to claim 16, wherein the mode control unit drives the display device in a first mode when the amount of change of the motion information is less than a first threshold or the amount of change of the input video is less than a second threshold, and drives the display device in a second mode when the amount of change of the motion information is greater than or equal to the first threshold and the amount of change of the input video is greater than or equal to the second threshold.

18. In the first mode, all of the modules included in the video processing unit communicate with the memory. The electronic device according to claim 17, wherein in the second mode, at least some of the multiple modules included in the video processing unit have their communication with the memory interrupted.

19. The aforementioned memory is A first lookup table for grayscale-luminance domain conversion of the input video, A second lookup table for brightness-to-grayscale domain conversion of the aforementioned input video, A third lookup table for grayscale-to-voltage domain conversion of the input video, and Fourth lookup table for voltage-to-grayscale domain conversion of the input video. The electronic device according to claim 17, including the electronic device according to claim 17.

20. The aforementioned video processing unit, A degamma conversion unit that converts the grayscale data of the input video into luminance data based on the first lookup table, A first compensation unit performs a first calculation process on the brightness data of the input video output from the degamma conversion unit. A gamma conversion unit converts the brightness data of the input video, for which the first calculation process has been performed, into grayscale data based on the second lookup table. A digital gamma conversion unit converts the gradation data of the input video output from the gamma conversion unit into voltage data based on the third lookup table. A second compensation unit performs a second calculation process on the voltage data of the input video output from the digital gamma conversion unit. A data conversion unit that converts the voltage data of the input video, for which the second calculation process has been performed, into grayscale data based on the fourth lookup table, and Dithering unit performs dithering on the gradation data of the input video output from the data conversion unit. The electronic device according to claim 19, including the electronic device according to claim 19.

Images