Electronic device for reducing standby power consumption and control method thereof

Abstract

Disclosed is an electronic device comprising: a battery; a display; a memory in which instructions are stored; at least one first processor for executing the instructions, wherein the at least one first processor is operatively connected to the battery, the display, and the memory; and a second processor operatively connected to the battery and the first processor, wherein the at least one first processor does not consume power in a first mode, the at least one first processor consumes power through the battery in a second mode, the power consumption of the second processor is less than the power consumption of the first processor in the second mode, the second processor changes the first processor from the first mode to the second mode when an external device is connected to the electronic device while the at least one first processor is in the first mode, and when the instructions are individually or collectively executed by the at least one first processor, the electronic device receives content from the external device and controls the display to display the received content.

Description

Electronic device for reducing standby power consumption and its control method

[0001] The present disclosure relates to an electronic device and a method for controlling the same, and more particularly, to an electronic device and a method for controlling the same for reducing standby power consumption.

[0002] Advances in electronic technology have led to the development of a diverse range of electronic devices. In particular, the recent proliferation of various types of displays has enhanced user convenience.

[0003] For example, display devices equipped with ePaper displays have recently become widespread. Because ePaper displays consume little power, they are widely used in situations where they are not connected to an external power source.

[0004] Accordingly, power management of display devices with ePaper displays can be a critical issue.

[0005] According to one embodiment of the present disclosure to achieve the above object, an electronic device includes a battery, a display, a memory storing instructions, at least one first processor executing the instructions, the at least one first processor being operatively connected to the battery, the display and the memory, and a second processor being operatively connected to the battery and the at least one first processor, wherein the at least one first processor does not consume power in a first mode, the at least one first processor consumes power through the battery in a second mode, and the power consumption of the second processor is less than the power consumption of the at least one first processor in the second mode, and the second processor changes the at least one first processor from the first mode to the second mode when an external device is connected to the electronic device while the at least one first processor is in the first mode, and when the instructions are individually or collectively executed by the at least one first processor, the electronic device can receive content from the external device and control the display to display the received content.

[0006] Additionally, the second processor may change the at least one first processor to the first mode when the received content is displayed through the display.

[0007] And, it further includes a switch connecting the battery and the at least one first processor, and the second processor can operate the switch to change the at least one first processor into one of the first mode and the second mode.

[0008] In addition, when the external device is connected to the electronic device, the second processor transmits a wake-up signal to the at least one first processor, and when the command is individually or collectively executed by the at least one first processor, the electronic device supplies power to the display and at least one circuit connected to the at least one first processor when the at least one first processor changes to the second mode, and when the at least one first processor receives the wake-up signal, the electronic device can cut off power to the at least one circuit.

[0009] And, the second processor includes a first signal pin of a high level, the external device includes a second signal pin that is grounded, and the second processor can identify that the external device is connected to the electronic device when the second signal pin is short-circuited to the first signal pin and the first signal pin changes to a low level.

[0010] Additionally, the display includes an ePaper display, and the ePaper display can maintain a display state of displayed received content while power is not supplied.

[0011] In addition, the ePaper display may change the display status of the displayed received content while power is supplied, and may not change the display status of the displayed received content while power is not supplied.

[0012] Additionally, the electronic device may not be connected to an external power source.

[0013] And, it further includes an input / output interface, and the external device may be a USB device connected to the electronic device through the input / output interface.

[0014] Additionally, the second processor can be constantly powered by the battery.

[0015] Meanwhile, according to one embodiment of the present disclosure, a method for controlling an electronic device includes, when an external device is connected to the electronic device while at least one first processor of the electronic device is in a first mode, a step of a second processor of the electronic device changing the at least one first processor of the electronic device from the first mode to a second mode, a step of the at least one first processor receiving content from the external device, and a step of displaying the received content on a display of the electronic device, wherein the at least one first processor does not consume power in the first mode, the at least one first processor consumes power through a battery of the electronic device in the second mode, and the power consumption of the second processor may be less than the power consumption of the at least one first processor in the second mode.

[0016] Additionally, the second processor may further include a step of changing the at least one first processor to the first mode when the received content is displayed through the display.

[0017] And, the step of changing the at least one first processor to the second mode may include operating a switch of the electronic device connecting the battery to the at least one processor by the second processor, and the control method may include operating the switch by the second processor to change the at least one first processor to the first mode while the at least one processor is in the second mode.

[0018] In addition, the step of changing the at least one first processor to the second mode may further include, when the external device is connected to the electronic device, transmitting a wake-up signal to the at least one first processor, and the control method may further include, when the at least one first processor is changed to the second mode, supplying power to the display and at least one circuit of the electronic device connected to the at least one first processor, and when the at least one first processor receives the wake-up signal, cutting off power to the at least one circuit.

[0019] And, the second processor includes a first signal pin of a high level, the external device includes a second signal pin that is grounded, and the step of changing the at least one first processor to the second mode is such that when the second signal pin is short-circuited to the first signal pin by the second processor so that the first signal pin is changed to a low level, the external device can be identified as being connected to the electronic device.

[0020] Meanwhile, according to one embodiment of the present disclosure, a non-transitory computer-readable medium stores instructions that, when executed by a first processor and a second processor of an electronic device, cause the electronic device to execute an operating method, the method including: switching the first processor from a first mode to a second mode based on an external device being connected to the electronic device while the first processor is in a first mode; receiving content from the external device by the first processor; and displaying the received content on a display of the electronic device, wherein the first processor does not consume power in the first mode, the first processor consumes power through a battery of the electronic device in the second mode, and the power consumption of the second processor may be less than the power consumption of the first processor in the second mode.

[0021] In relation to a non-transitory computer-readable medium, the method may further include a step of the second processor switching the first processor to the first mode based on the received content being displayed on the display.

[0022] In relation to the non-transitory computer-readable medium, the step of switching the first processor to the second mode may further include the step of the second processor operating a switch of an electronic device connecting a battery to the first processor, and the method may further include the step of the second processor operating the switch to switch the first processor to the first mode while the first processor is in the second mode.

[0023] In relation to the non-transitory computer-readable medium, the step of switching the first processor to the second mode may further include the step of transmitting a wake-up signal to the first processor based on an external device being connected to the electronic device, wherein the method may further include the step of: supplying power to a display and at least one circuit of the electronic device connected to the first processor based on the first processor being switched to the second mode; and the step of cutting off power to the at least one circuit based on the first processor receiving the wake-up signal.

[0024] In relation to the non-transitory computer-readable medium, the second processor may include a first signal pin that is at a high level, the external device may include a second signal pin that is grounded, and the step of switching the first processor to the second mode may further include a step of the second processor identifying that the external device is connected to the electronic device based on the second signal pin being shorted to the first signal pin, thereby causing the first signal pin to transition to a low level.

[0025] According to one embodiment of the present disclosure, an electronic device includes: a battery; a display; at least one memory storing one or more instructions; a first processor configured to execute the one or more instructions, wherein the first processor is operably connected to the battery, the display, and the memory; and a second processor configured to execute the one or more instructions, wherein the second processor is operably connected to the battery and the first processor, wherein the first processor does not consume power in a first mode, the first processor consumes power through the battery in a second mode, and the power consumption of the second processor is less than the power consumption of the first processor in the second mode, wherein the one or more instructions, when executed by the second processor, cause the second processor to switch the first processor from the first mode to the second mode based on an external device connected to the electronic device while the first processor is in the first mode, and wherein the one or more instructions, when executed by the first processor, cause the electronic device to receive content from the external device and control the display to display the received content.

[0026] According to one embodiment of the present disclosure for achieving the above object, an electronic device includes a battery, a display, a first processor, and a second processor having lower power consumption than the first processor, wherein the second processor changes the first processor to a second mode in which it consumes power through the battery when an external device is connected to the electronic device while the processor is in a first mode in which it does not consume power, and the first processor receives content from the external device and controls the display to display the received content.

[0027] Additionally, the second processor can change the processor to the first mode when the received content is displayed through the display.

[0028] And, it further includes a switch connecting the battery and the first processor, and the second processor can control the switch to change the first processor into one of the first mode and the second mode.

[0029] In addition, when the external device is connected to the electronic device, the second processor changes the first processor to the second mode and transmits a wake-up signal to the first processor, and the first processor supplies power to the display connected to the first processor and at least one circuit connected to the first processor when the first processor is changed to the second mode, and when the wake-up signal is received from the second processor, the second processor can cut off the power supply to the at least one circuit.

[0030] And, the second processor includes a first signal pin of a high level, the external device includes a second signal pin that is grounded, and the second processor can identify that the external device is connected to the electronic device when the second signal pin is short-circuited to the first signal pin and the high level changes to a low level.

[0031] Additionally, the display includes an ePaper display, and the ePaper display can maintain the display state of the content being displayed even when the power supply is cut off.

[0032] In addition, the ePaper display may be able to change the display status of the content being displayed while power is supplied, and may not be able to change the display status of the content being displayed while power is not supplied.

[0033] Additionally, the electronic device may be a device that is not supplied with external power.

[0034] And, it further includes an input / output interface, and the external device may be a USB device connected to the electronic device through the input / output interface.

[0035] Additionally, the second processor can be constantly powered by the battery.

[0036] Meanwhile, according to one embodiment of the present disclosure, a method for controlling an electronic device may include, when an external device is connected to the electronic device while a first processor included in the electronic device is in a first mode in which the first processor does not consume power, a step of changing a second processor included in the electronic device and having lower power consumption than the first processor to a second mode in which the first processor consumes power through a battery included in the electronic device, a step of receiving content from the external device by the first processor, and a step of displaying the received content through a display included in the electronic device.

[0037] Additionally, the second processor may further include a step of changing the first processor to the first mode when the received content is displayed through the display.

[0038] And, the step of changing to the second mode may be such that the second processor controls a switch connecting the battery and the first processor to change the first processor to the second mode, and the step of changing to the first mode may be such that the second processor controls the switch to change the first processor to the first mode.

[0039] In addition, the step of changing to the second mode may further include the step of changing the first processor to the second mode and transmitting a wake-up signal to the first processor when the external device is connected to the electronic device, and the control method may further include the step of supplying power to the display connected to the first processor and at least one circuit connected to the first processor when the first processor is powered, and the step of cutting off the power supply to the at least one circuit when the first processor receives the wake-up signal from the second processor.

[0040] And, the second processor includes a first signal pin of a high level, the external device includes a second signal pin that is grounded, and the step of changing to the second mode is such that when the second signal pin is short-circuited to the first signal pin and the high level is changed to a low level, the external device can be identified as being connected to the electronic device.

[0041] Additionally, the display includes an ePaper display, and the ePaper display can maintain the display state of the content being displayed even when the power supply is cut off.

[0042] In addition, the ePaper display may be able to change the display status of the content being displayed while power is supplied, and may not be able to change the display status of the content being displayed while power is not supplied.

[0043] Additionally, the electronic device may be a device that is not supplied with external power.

[0044] And, the external device may be a USB device connected to the electronic device through an input / output interface included in the electronic device.

[0045] Additionally, the second processor can be constantly powered by the battery.

[0046] The above and other aspects and features of specific embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0047] FIG. 1 is a block diagram illustrating a configuration of an electronic system according to one or more embodiments of the present disclosure.

[0048] FIG. 2 is a block diagram illustrating a configuration of an electronic device according to one or more embodiments of the present disclosure.

[0049] FIG. 3 is a block diagram showing a detailed configuration of an electronic device according to one or more embodiments of the present disclosure.

[0050] FIG. 4 is a diagram for explaining mode-specific operation of an electronic device according to one or more embodiments of the present disclosure.

[0051] FIGS. 5, 6, 7, and 8 are drawings sequentially illustrating operations according to connection of an external device according to one or more embodiments of the present disclosure.

[0052] FIG. 9 is a diagram illustrating a method for identifying a connection of an external device according to one or more embodiments of the present disclosure.

[0053] FIG. 10 is a diagram illustrating signals output from a second processor according to one or more embodiments of the present disclosure.

[0054] FIG. 11 is a flowchart illustrating a method for controlling an electronic device according to one or more embodiments of the present disclosure.

[0055] The embodiments of the present disclosure are susceptible to various modifications. Accordingly, one or more specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, it should be understood that the present disclosure is not limited to the specific embodiments, but rather encompasses all modifications, equivalents, and alternatives that do not depart from the spirit and scope of the present disclosure. Furthermore, detailed descriptions of well-known functions or configurations that may unnecessarily obscure the gist of the present disclosure are omitted.

[0056] An object of the present disclosure is to provide an electronic device and a control method thereof that change displayed content while reducing standby power consumption.

[0057] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description, like reference numbers designate like components throughout the specification.

[0058] The terms used in the embodiments of this disclosure have been selected from widely used, current terms, taking into account the functions of this disclosure. However, these terms may vary depending on the intentions of those skilled in the art, precedents, the emergence of new technologies, etc. Furthermore, in certain cases, terms may be arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the description of the relevant disclosure. Therefore, the terms used in this disclosure should not be defined simply as names of terms, but rather based on the meanings of the terms and the overall content of this disclosure.

[0059] In this specification, expressions such as “has,” “can have,” “includes,” or “may include” indicate the presence of a feature (e.g., a number, function, operation, or component such as a part), and do not exclude the presence of additional features.

[0060] As used herein, the expressions “first,” “second,” “first,” or “second,” etc., may describe various components, regardless of order and / or importance, and are only used to distinguish one component from another, but do not limit the components.

[0061] Singular expressions include plural expressions unless the context clearly dictates otherwise. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. In this application, it should be understood that terms such as "comprise" or "consist of" specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0062] Terms such as "unit," "module," "member," and "block" may be implemented in hardware or software. As used herein, multiple "units," "modules," "members," and "blocks" may be implemented as a single component, and a single "unit," "module," "member," or "block" may include multiple components.

[0063] Throughout this disclosure, when a component is said to be "on" another component, this includes not only when the component is in contact with the other component, but also when there is another component between the two components.

[0064] In the present disclosure, the expressions “at least one of a, b, or c” and “at least one of a, b, and c” represent “a only,” “b only,” “c only,” “both a and b,” “both a and c,” “both b and c,” and “all a, b, and c.”

[0065] In connection with the methods or processes described in this disclosure, identification codes may be used for convenience of explanation, but are not intended to describe the order of each step or operation. Each step or operation may be implemented in a different order than the illustrated order, unless the context clearly dictates otherwise. Unless the context clearly dictates otherwise, one or more steps or operations may be omitted.

[0066] The various operations, acts, blocks, steps, etc. of the flowchart may be performed in the order presented, in a different order, or simultaneously. Furthermore, in one or more embodiments, some operations, acts, blocks, steps, etc. may be omitted, added, modified, skipped, etc. without departing from the scope of the present disclosure.

[0067] When an element is referred to as being "connected" to another element, it should be understood that this may be directly or indirectly connected to the other element, and that an indirect connection here includes "connecting via a wireless communications network."

[0068] In this specification, the term user may refer to a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).

[0069] Various embodiments of the present disclosure will be described in more detail with reference to the attached drawings below.

[0070] FIG. 1 is a block diagram illustrating a configuration of an electronic system (1000) according to one or more embodiments of the present disclosure. As illustrated in FIG. 1, the electronic system (1000) includes an electronic device (100) and an external device (200).

[0071] The electronic device (100) may be a device that includes a display and displays content through the display. For example, the electronic device (100) may be a desktop PC, a TV, a laptop, a smartphone, a tablet PC, smart glasses, a smart watch, etc., as a device that includes an ePaper display and displays content through the ePaper display.

[0072] The electronic device (100) may be a device that is not supplied with external power. For example, the electronic device (100) may be a device that is not supplied with external power and is powered by a battery.

[0073] When an external device (200) is connected, the electronic device (100) can change its mode from the first mode to a second mode that consumes more power than the first mode. When the electronic device (100) changes its mode to the second mode when the external device (200) is connected, the electronic device (100) can receive content from the external device (200) and display the received content. When the electronic device (100) displays the received content, the electronic device (100) can change the second mode to the first mode. However, the present invention is not limited thereto, and the electronic device (100) can also change the second mode to the first mode when the external device (200) is disconnected or after displaying the content and a preset time has elapsed.

[0074] An external device (200) may be a device that stores content and provides the content to the electronic device (100) when connected to the electronic device (100). For example, the external device (200) may be a USB device connected to the electronic device (100).

[0075] However, it is not limited thereto, and the external device (200) may be any device that can provide content to the electronic device (100).

[0076] FIG. 2 is a block diagram showing the configuration of an electronic device (100) according to one or more embodiments of the present disclosure.

[0077] According to FIG. 2, the electronic device (100) may include a battery (110), a display (120), a first processor (130), and a second processor (140). However, the present invention is not limited thereto, and the electronic device (100) may be implemented with some components excluded.

[0078] The battery (110) can be charged by external power of the battery (110) and can output the charged power to provide power to drive each component of the electronic device (100). Here, the battery (110) can include a rechargeable secondary battery or a fuel cell.

[0079] When the electronic device (100) is in the first mode, power may be supplied to the second processor (140) through the battery (110), and power may not be supplied to the remaining components of the electronic device (100). When the electronic device (100) is in the second mode, power may be supplied to the first processor (130) and the second processor (140) through the battery (110). That is, the first mode may be a power saving mode, and the second mode may be a normal mode.

[0080] The display (120) is configured to display content and may be an ePaper display. The ePaper display can maintain the display status of the content being displayed even when power is cut off. Changing the content displayed on the ePaper display may require power to be supplied to the ePaper display. For example, the ePaper display can change the display status of the content being displayed while power is supplied, but cannot change the display status of the content being displayed while power is cut off.

[0081] The first processor (130) controls the overall operation of the electronic device (100). Specifically, the first processor (130) is connected to each component of the electronic device (100) and can control the overall operation of the electronic device (100). For example, the first processor (130) is connected to components such as the battery (110), the display (120), the second processor (140), and the like and can control the operation of the electronic device (100).

[0082] The first processor (130) may be implemented with one or more processors. In this case, the one or more processors may include one or more of a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an APU (Accelerated Processing Unit), a MIC (Many Integrated Core), a DSP (Digital Signal Processor), an NPU (Neural Processing Unit), a hardware accelerator, or a machine learning accelerator. The one or more processors may control one or any combination of other components of the electronic device (100) and perform operations related to communication or data processing. The one or more processors may individually or independently execute one or more programs or instructions stored in a memory. For example, the one or more processors may execute one or more instructions stored in a memory, thereby performing a method according to one or more embodiments of the present disclosure.

[0083] When a method according to one or more embodiments of the present disclosure includes multiple operations, the multiple operations may be performed by one processor or multiple processors. For example, when a first operation, a second operation, and a third operation are performed by a method according to one or more embodiments, the first operation, the second operation, and the third operation may all be performed by a first processor, or the first operation and the second operation may be performed by a first processor (e.g., a general-purpose processor) and the third operation may be performed by a second processor (e.g., an AI-specific processor). For example, a process of quantizing a neural network model according to one or more embodiments of the present disclosure may be performed by a general-purpose processor, and a process of learning or inferring the quantized neural network model may be performed by an AI-specific processor.

[0084] One or more processors may be implemented as a single core processor including one core, or may be implemented as one or more multicore processors including multiple cores (e.g., homogeneous multicore or heterogeneous multicore). When one or more processors are implemented as a multicore processor, each of the multiple cores included in the multicore processor may include internal processor memory, such as cache memory or on-chip memory, and a common cache shared by the multiple cores may be included in the multicore processor. In addition, each of the multiple cores (or some of the multiple cores) included in the multicore processor may independently read and execute program instructions for implementing a method according to one or more embodiments of the present disclosure, or all (or some) of the multiple cores may be linked to read and execute program instructions for implementing a method according to one or more embodiments of the present disclosure.

[0085] When a method according to one or more embodiments of the present disclosure includes a plurality of operations, the plurality of operations may be performed by one core among the plurality of cores included in a multi-core processor, or may be performed by the plurality of cores. For example, when a first operation, a second operation, and a third operation are performed by a method according to one or more embodiments, the first operation, the second operation, and the third operation may all be performed by a first core included in the multi-core processor, or the first operation and the second operation may be performed by a first core included in the multi-core processor, and the third operation may be performed by a second core included in the multi-core processor.

[0086] In embodiments of the present disclosure, one or more processors may refer to a system on a chip (SoC) in which one or more processors and other electronic components are integrated, a single-core processor, a multi-core processor, or a core included in a single-core processor or a multi-core processor, wherein the core may be implemented as a CPU, a GPU, an APU, a MIC, a DSP, an NPU, a hardware accelerator, or a machine learning accelerator, but the present disclosure is not limited thereto. However, for convenience of explanation, the operation of the electronic device (100) is described below using the expression first processor (130).

[0087] The first processor (130) may not consume power when in the first mode, and may consume power when in the second mode. For example, the first processor (130) may be turned off when power is not supplied in the first mode, and may be turned on when power is supplied in the second mode. When power is not supplied to the first processor (130), power may not be supplied to a component connected to the first processor (130) and supplied with power from the first processor (130). Whether or not to supply power to the first processor (130) may be determined by the second processor (140). Here, the first mode may be a power-saving mode, and the second mode may be a normal mode.

[0088] However, it is not limited thereto, and the first processor (130) may be supplied with power even in the first mode, but may be turned off and not consume power. Alternatively, the first processor (130) may consume power even in the first mode, but may operate only some components of the first processor (130) or operate at a lowered operating frequency in order to consume less power than in the second mode.

[0089] The second processor (140) may be a processor that consumes less power than the first processor (130). For example, the second processor (140) may be a low-power MCU (Micro Controller Unit). However, the present invention is not limited thereto, and the second processor (140) may be any type of processor as long as it consumes less power than the first processor (130). In one or more embodiments, the second processor may execute at least one program or instruction stored in memory.

[0090] The second processor (140) may be in a state where power is constantly supplied through the battery (110). That is, the second processor (140) may be in a state where power is supplied from the battery (110) regardless of the mode of the electronic device (100).

[0091] The second processor (140) can identify whether the external device (200) is connected to the electronic device (100) while the first processor (130) is in a first mode that does not consume power. For example, the second processor (140) can identify whether the external device (200) is connected to the electronic device (100) while the first processor (130) is not powered. For example, the second processor (140) includes a first signal pin with a high level, the external device (200) includes a second signal pin that is grounded, and the second processor (140) can identify that the external device (200) is connected to the electronic device (100) when the second signal pin is short-circuited to the first signal pin and the high level changes to a low level. Here, the electronic device (100) further includes an input / output interface, and the external device (200) may be a USB device connected to the electronic device (100) via the input / output interface.

[0092] However, this is not limited to this, and the second processor (140) can identify whether the external device (200) is connected to the electronic device (100) in any number of ways.

[0093] The input / output interface may include at least one of HDMI (High Definition Multimedia Interface), MHL (Mobile High-Definition Link), USB (Universal Serial Bus), DP (Display Port), Thunderbolt, VGA (Video Graphics Array) port, RGB port, D-SUB (D-subminiature), and DVI (Digital Visual Interface).

[0094] The input / output interface can input / output at least one of audio and video signals. For example, the input / output interface may include separate ports that input / output only audio signals and ports that input / output only video signals, or may be implemented as a single port that inputs / outputs both audio and video signals.

[0095] The second processor (140) can change to a second mode in which the first processor (130) consumes power via the battery (110) when an external device (100) is connected to the electronic device (100) while the first processor (130) is in a first mode in which it does not consume power. For example, the second processor (140) can supply power to the first processor (130) via the battery (110) when an external device (100) is connected to the electronic device (100) while power is not supplied to the first processor (130). For example, the electronic device (100) further includes a switch connecting the battery (110) and the first processor (130), and the second processor (140) can control the switch to supply power to the first processor (130) via the battery (110).

[0096] The first processor (130) can receive content from an external device (200) and control the display (120) to display the received content.

[0097] When content received through the display (120) is displayed, the second processor (140) can change the first processor (130) to the first mode. For example, when content received through the display (120) is displayed, the second processor (140) can cut off power supply to the first processor (130). For example, the electronic device (100) further includes a switch connecting the battery (110) and the first processor (130), and the second processor (140) can control the switch to change the first processor (130) to one of the first mode and the second mode.

[0098] The first processor (130) may control the display (120) to display the received content and then provide information indicating that the content has been displayed to the second processor (140). In this case, the second processor (140) may identify that the display state of the display (120) has changed based on the information received from the first processor (130) and change the first processor (130) to the first mode. Alternatively, when an external device (200) is connected to the electronic device (100), the second processor (140) may change the first processor (130) to the second mode and change a flag value. Thereafter, the first processor (130) may control the display (120) to display the received content and then change the flag value, and the second processor (140) may change the first processor (130) to the first mode based on the changed flag value.

[0099] However, it is not limited to this, and the second processor (140) may identify that the display status of the display (110) has changed through any number of methods.

[0100] When the external device (200) is connected to the electronic device (100), the second processor (140) may change the first processor (130) to the second mode and transmit a wake-up signal to the first processor (130). For example, when the external device (200) is connected to the electronic device (100), the second processor (140) may supply power to the first processor (130) through the battery (110) and transmit a wake-up signal to the first processor (130). In this case, when the first processor (130) is changed to the second mode, the first processor (130) may supply power to the display (120) connected to the first processor (130) and to at least one circuit connected to the first processor (130), and when a wake-up signal is received from the second processor (140), the first processor (130) may cut off the power supply to at least one circuit. That is, when a wake-up signal is received, the first processor (130) can further reduce power consumption by cutting off power supply to the remaining components connected to the first processor (130) except for the display (120).

[0101] In this case, the electronic device (100) may further include a third mode in addition to the first mode and the second mode. For example, the first mode may be a power saving mode in which power is supplied only to the second processor (140), the second mode may be a normal mode in which power is supplied to all components of the electronic device (100), and the third mode may be a mode in which power is supplied only to the display (120), the first processor (130), and the second processor (140).

[0102] FIG. 3 is a block diagram showing a detailed configuration of an electronic device (100) according to one or more embodiments of the present disclosure.

[0103] The electronic device (100) may include a battery (110), a display (120), a first processor (130), and a second processor (140). In addition, according to FIG. 3, the electronic device (100) may further include a memory (150), a communication interface (160), a user interface (170), a camera (180), a microphone (190), and a speaker (195). Among the components illustrated in FIG. 3, a detailed description of the overlapping parts with the components illustrated in FIG. 2 will be omitted.

[0104] Memory (150) may refer to hardware that stores information such as data in an electrical or magnetic form so that the first processor (130) or the like can access it. To this end, memory (150) may be implemented as at least one piece of hardware from among non-volatile memory, volatile memory, flash memory, hard disk drive (HDD), solid state drive (SSD), RAM, ROM, etc.

[0105] At least one instruction required for the operation of the electronic device (100) or the first processor (130) may be stored in the memory (150). Here, the instruction is a code unit that instructs the operation of the electronic device (100) or the first processor (130), and may be written in machine language, which is a language that a computer can understand.

[0106] The memory (150) may store data, which is information in bits or bytes that can represent characters, numbers, images, etc. For example, content may be stored in the memory (150).

[0107] The memory (150) is accessed by the first processor (130), and reading / writing / modifying / deleting / updating instructions, instruction sets, or data can be performed by the first processor (130).

[0108] The communication interface (160) is a component that performs communication with various types of external devices according to various types of communication methods. For example, the electronic device (100) can perform communication with a server, an access point, and a user terminal device through the communication interface (160).

[0109] The communication interface (160) may include a Wi-Fi module, a Bluetooth module, an infrared communication module, a wireless communication module, etc. Here, each communication module may be implemented in the form of at least one hardware chip.

[0110] Wi-Fi and Bluetooth modules communicate via Wi-Fi and Bluetooth, respectively. When using a Wi-Fi or Bluetooth module, connection information, such as the SSID and session key, is first transmitted and received. This information is then used to establish a communication connection before various other information can be transmitted and received. Infrared communication modules use infrared data association (IrDA) technology, which wirelessly transmits data over short distances using infrared light, which lies between visible light and millimeter waves.

[0111] In addition to the above-described communication method, the wireless communication module may include at least one communication chip that performs communication according to various wireless communication standards such as zigbee, 3G (3rd Generation), 3GPP (3rd Generation Partnership Project), LTE (Long Term Evolution), LTE-A (LTE Advanced), 4G (4th Generation), 5G (5th Generation), etc.

[0112] Alternatively, the communication interface (160) may include an input / output interface such as HDMI, DP, Thunderbolt, USB, RGB, D-SUB, DVI, etc.

[0113] In addition, the communication interface (160) may include at least one of a LAN (Local Area Network) module, an Ethernet module, or a wired communication module that performs communication using a pair cable, a coaxial cable, or an optical fiber cable.

[0114] The user interface (170) may be implemented with buttons, a touch pad, a mouse, a keyboard, etc., or may be implemented with a touch screen capable of performing both display and operation input functions. Here, the buttons may be various types of buttons, such as mechanical buttons, touch pads, wheels, etc., formed on any area of ​​the front, side, or back of the main body of the electronic device (100).

[0115] The camera (180) is configured to capture still images or moving images. The camera (180) can capture still images at a specific point in time, but can also capture still images continuously.

[0116] The camera (180) includes a lens, a shutter, an aperture, a solid-state image sensor, an AFE (Analog Front End), and a TG (Timing Generator). In addition, the camera (180) may further include a cover glass that is in contact with the lens. The shutter controls the time at which light reflected from a subject enters the camera (180), and the aperture controls the amount of light incident on the lens by mechanically increasing or decreasing the size of the opening through which light enters. The solid-state image sensor outputs an image by the photocharge as an electrical signal when light reflected from a subject is accumulated as a photocharge. The TG outputs a timing signal for reading out pixel data of the solid-state image sensor, and the AFE samples and digitizes the electric signal output from the solid-state image sensor.

[0117] The microphone (190) is configured to receive sound and convert it into an audio signal. The microphone (190) is electrically connected to the first processor (130) and can receive sound under the control of the first processor (130).

[0118] For example, the microphone (190) may be formed as an integrated unit integrated into the upper side, front side, side side, etc. of the electronic device (100). Alternatively, the microphone (190) may be provided in a remote control, etc., separate from the electronic device (100). In this case, the remote control may receive sound through the microphone (190) and provide the received sound to the electronic device (100).

[0119] The microphone (190) may include various configurations such as a microphone that collects analog sound, an amplifier circuit that amplifies the collected sound, an A / D conversion circuit that samples the amplified sound and converts it into a digital signal, and a filter circuit that removes noise components from the converted digital signal.

[0120] The microphone (190) may be implemented in the form of a sound sensor, and any configuration capable of collecting sound may be used.

[0121] The speaker (195) is a component that outputs various audio data processed by the first processor (130) as well as various notification sounds and voice messages.

[0122] Through the above operation, the electronic device (100) can reduce power consumption by supplying power only to the second processor (140) that consumes relatively less power than the first processor (130) when there is no special event such as an external device (200) being connected. In addition, when the external device (200) is connected to the electronic device (100), power may be supplied to the first processor (130) to change the display state of the display (110), and then power supply to the first processor (130) may be cut off again. That is, even if the user does not perform a separate operation such as changing the mode of the electronic device (100), the user can change the display state of the display (110) simply by connecting the external device (200) to the electronic device (100), thereby improving user convenience.

[0123] Hereinafter, the operation of the electronic device (100) will be described in more detail with reference to FIGS. 4 to 10. For convenience of explanation, individual embodiments are described in FIGS. 4 to 10. However, the individual embodiments of FIGS. 4 to 10 may be implemented in any combination.

[0124] FIG. 4 is a diagram for explaining the mode-specific operation of an electronic device (100) according to one or more embodiments of the present disclosure.

[0125] When the electronic device (100) is in the first mode as shown in the upper part of FIG. 4, the second processor (low-power MCU, 140) is supplied with power from the battery (110), but the first processor (Main SoC, 130) and at least one circuit connected to the first processor (130) may not be supplied with power from the battery (110). The at least one circuit connected to the first processor (130) may include a RAM (DDR4), a storage space (eMMC), MICOM, a communication interface (BT & WI-FI), etc. The at least one circuit connected to the first processor (130) includes a display (ePaper Color Panel, 120), and the display (120) is an ePaper display and can maintain the display state of the content being displayed even when the power supply is cut off. However, since the ePaper display is not supplied with power, the display state of the content being displayed cannot be changed.

[0126] The battery (110) can be charged via a solar cell and a power management IC (PMIC). However, the present invention is not limited thereto, and the battery (110) can also be charged via an external power source. The battery (110) can continuously supply power to the second processor (140). The battery (110) can provide power to a power block corresponding to the first processor (130) via a switch. Here, the switch can be controlled by the second processor (140).

[0127] The second processor (140) can identify whether the external device (200) is connected to the electronic device (100). For example, the second processor (140) includes a first signal pin with a high level, the external device (200) includes a second signal pin that is grounded, and the second processor (140) can identify that the external device (200) is connected to the electronic device (100) when the second signal pin is short-circuited to the first signal pin and the high level changes to a low level. Here, the first signal pin may be a general-purpose input / output (GPIO) signal pin.

[0128] In the upper part of FIG. 4, the first signal pin of the second processor (140) is illustrated as being connected to the second signal pin of the external device (200) via the first processor (130). That is, the first signal pin of the second processor (140) is connected to one of the plurality of signal pins of the first processor (130), the second signal pin of the external device (200) is connected to the other of the plurality of signal pins of the first processor (130), and one and the other of the plurality of signal pins in the first processor (130) may be short-circuited. If the external device (200) is not connected to the electronic device (100), one and the other of the plurality of signal pins in the first processor (130) may be in a high level state by the first signal pin.

[0129] However, this is not limited to this, and the first signal pin of the second processor (140) may be connected to the second signal pin of the external device (200) without going through the first processor (130).

[0130] If the second processor (140) identifies that an external device (200) is connected to the electronic device (100) while power is not supplied to the first processor (130), the second processor (140) can control a switch so that power from the battery (110) is supplied to the POWER BLOCK corresponding to the first processor (130), as shown in the lower part of FIG. 4. In addition, the second processor (140) can transmit a wake-up signal to the first processor (130).

[0131] When power is supplied, the first processor (130) supplies power to a display (120) connected to the first processor (130) and at least one circuit connected to the first processor (130), and when a wake-up signal is received from the second processor (140), the first processor (130) can cut off power supply to at least one circuit.

[0132] The first processor (130) can receive content from an external device (200) and control the ePaper display to display the received content. Since the ePaper display is powered, the display state of the content being displayed can be changed under the control of the first processor (130).

[0133] FIGS. 5 to 8 are drawings for sequentially explaining operations according to connection of an external device (200) according to one or more embodiments of the present disclosure.

[0134] The electronic device (100) may be in a first mode before an external device (200) is connected. For example, as illustrated in FIG. 5, power may not be supplied to the first processor (Main SoC, 130) and the display (Panel, 120), while power may be supplied to the second processor (low-power MCU, 130).

[0135] The second processor (140) includes a first signal pin of a high level, and the first signal pin can be connected to one of the plurality of signal pins of the first processor (130). Since the external device (200) is not connected to the electronic device (100), another one of the plurality of signal pins of the first processor (130) is open, and both one of the plurality of signal pins connected to the other one of the plurality of signal pins and the first signal pin are not conducting current and can be at a high level.

[0136] The display (120) may be in a state of displaying first content under the control of the first processor (130) before the electronic device (100) enters the first mode. The display is not supplied with power when the electronic device (100) enters the first mode, but may be implemented as an ePaper display and thus maintain the display state of the content being displayed.

[0137] Thereafter, the external device (200) may be connected to the electronic device (100). For example, as illustrated in FIG. 6, when the external device (Device, 200) is connected to the electronic device (100), the grounded second signal pin of the external device (200) may be connected to another one of the plurality of signal pins of the first processor (130). In this case, one of the plurality of signal pins of the first processor (130) and the first signal pin of the second processor (140) may also be grounded by the grounded second signal pin. That is, the second processor (140) may identify that the external device (200) is connected to the electronic device (100) as the first signal pin changes from a high level to a low level.

[0138] When an external device (200) is connected to the electronic device (100), the second processor (140) can supply power to the first processor (130) through the battery (110) and transmit a wake-up signal to the first processor (130).

[0139] When power is supplied, the first processor (130) can change the display state of the display. For example, as illustrated in FIG. 7, when power is supplied, the first processor (130) supplies power to the display (120) connected to the first processor (130) and at least one circuit connected to the first processor (130), and when a wake-up signal is received from the second processor (140), the first processor (130) can cut off the power supply to at least one circuit.

[0140] The first processor (130) can receive second content stored in the external device (200) from the external device (200) and change the first content being displayed through the display (120) to the second content. As power is supplied to the first processor (130), power is also supplied to the display (120), and as power is supplied, the display state of the display (120) can be changed.

[0141] Thereafter, when the external device (200) is disconnected from the electronic device (100), the electronic device (100) can change the mode of the electronic device (100) to the first mode. For example, as illustrated in FIG. 8, when the external device (200) is disconnected from the electronic device (100), another one of the plurality of signal pins of the first processor (130) is opened, and both one of the plurality of signal pins connected to the other one of the plurality of signal pins and the first signal pin of the second processor (140) can be changed to a state where current does not flow. That is, the second processor (140) can identify that the external device (200) is disconnected from the electronic device (100) as the first signal pin changes from a low level to a high level.

[0142] The second processor (140) may cut off power supply to the first processor (130) when it is identified that the external device (200) is disconnected from the electronic device (100).

[0143] However, it is not limited thereto, and the second processor (140) may identify the display status of the display (120) and cut off the power supply to the first processor (130). Alternatively, the first processor (130) may provide information that the display status of the display (120) has changed to the second processor (140), and the second processor (140) may cut off the power supply to the first processor (130) based on the information received from the first processor (130).

[0144] When the power supply to the first processor (130) is cut off, the power supply to the display (120) connected to the first processor (130) is also cut off. However, since the display (120) is an ePaper display, the display state of the second content being displayed can be maintained even when the power supply is cut off.

[0145] FIG. 9 is a drawing for explaining a method for identifying a connection of an external device (200) according to one or more embodiments of the present disclosure.

[0146] The second processor (140) may include a high level first signal pin, as illustrated in FIG. 9, and the external device (200) may include a grounded second signal pin (A12).

[0147] The second processor (140) can identify that the external device (200) is connected to the electronic device (100) when the second signal pin is short-circuited to the first signal pin and the high level changes to a low level.

[0148] In Fig. 9, for convenience of explanation, the first signal pin is illustrated as being directly connected to the second signal pin, but the present invention is not limited thereto. For example, the first signal pin may be connected to the second signal pin via the first processor (130). For example, the first signal pin may be connected to one of the plurality of signal pins of the first processor (130), and the second signal pin may be connected to the other of the plurality of signal pins of the first processor (130). One and the other of the plurality of signal pins of the first processor (130) are short-circuited, and the circuit configuration may not change depending on whether the first processor (130) is powered on. That is, one and the other of the plurality of signal pins of the first processor (130) may be physically connected, and accordingly, even if the first processor (130) is not powered on, the voltage of one and the other of the plurality of signal pins of the first processor (130) may be the same.

[0149] FIG. 10 is a diagram for explaining signals output from a second processor (140) according to one or more embodiments of the present disclosure.

[0150] When an external device (200) is connected to the electronic device (100), the second processor (140) can supply power to the first processor (130) through the battery (110) and transmit a wake-up signal to the first processor (130).

[0151] For example, as illustrated in FIG. 10, when an external device (200) is connected to the electronic device (100), the second processor (140) can supply power such as core power, CPU power, and 1.8 V / 3.3 V to the first processor (130) through the battery (110) by applying a high-level System Power EN (1020) signal to the switch (1010) connecting the battery (110) and the first processor (130).

[0152] When power is supplied to the first processor (130), power may also be supplied to the display (120) connected to the first processor (130) and at least one circuit connected to the first processor (130).

[0153] When a wake-up signal is received from a second processor (140), the first processor (130) may cut off power supply to at least one circuit. For example, when a wake-up (1030) signal is received from a second processor (140), the first processor (130) may cut off power supply to at least one circuit.

[0154] However, the first processor (130) maintains power supply to the display (120) and can change the display state of the display (120) (Image Update).

[0155] The second processor (140) can cut off the power supply to the first processor (130) when the display state of the display (120) changes. For example, the second processor (140) can cut off the power supply to the first processor (130) by changing the high level of the System Power EN (1020) signal to a low level.

[0156] When the power supply to the first processor (130) is cut off, the power supply to the display (120) connected to the first processor (130) may also be cut off. However, this is not limited to the first processor (130), and the first processor (130) may also cut off the power supply to the display (120) after changing the display state of the display (120). Through this operation, the power consumed by the display (120) can be further reduced.

[0157] FIG. 11 is a flowchart illustrating a method for controlling an electronic device according to one or more embodiments of the present disclosure.

[0158] First, when an external device is connected to the electronic device while the first processor included in the electronic device is in a first mode that does not consume power, a second processor included in the electronic device and consuming less power than the first processor changes the first processor to a second mode that consumes power via a battery included in the electronic device (S1110). Then, the first processor receives content from the external device (S1120). Then, the received content is displayed through a display included in the electronic device (S1130).

[0159] Additionally, the second processor may further include a step of changing the first processor to the first mode when the content received through the display is displayed.

[0160] And, the step of changing to the second mode (S1110) is such that the second processor controls a switch connecting the battery and the first processor to change the first processor to the second mode, and the step of changing to the first mode is such that the second processor controls the switch to change the first processor to the first mode.

[0161] In addition, the step of changing to the second mode (S1110) may further include a step of changing the first processor to the second mode and transmitting a wake-up signal to the first processor when the external device is connected to the electronic device, and the control method may further include a step of supplying power to a display connected to the first processor and at least one circuit connected to the first processor when the first processor is changed to the second mode, and a step of cutting off power supply to at least one circuit when the first processor receives a wake-up signal from the second processor.

[0162] And, the second processor includes a first signal pin of a high level, the external device includes a second signal pin that is grounded, and the step of changing to a second mode (S1110) is such that when the second signal pin of the second processor is short-circuited to the first signal pin and the high level is changed to a low level, the external device can be identified as being connected to the electronic device.

[0163] Additionally, the display includes an ePaper display, and the ePaper display can maintain the display state of the content being displayed even when the power supply is cut off.

[0164] Additionally, the ePaper display may be able to change the display status of the content being displayed while powered on, and may not be able to change the display status of the content being displayed while powered off.

[0165] Additionally, the electronic device may be a device that does not require an external power supply.

[0166] And, the external device may be a USB device that is connected to the electronic device through an input / output interface included in the electronic device.

[0167] Additionally, the second processor can be powered continuously by a battery.

[0168] As such, the electronic device can reduce power consumption by supplying power only to the second processor, which consumes relatively less power than the first processor, when there are no special events such as external devices being connected.

[0169] Additionally, when an external device is connected to the electronic device, power may be supplied to the first processor, changing the display state of the display, and then power may be cut off again. This means that the user can change the display state simply by connecting the external device to the electronic device, without performing any separate operations such as changing the mode of the electronic device, thereby improving user convenience.

[0170] According to one or more embodiments of the present disclosure, one or more of the embodiments described above may be implemented as software including instructions stored in a machine-readable storage medium that can be read by a machine (e.g., a computer). The device may include an electronic device (e.g., electronic device (A)) according to the disclosed embodiments, which is a device that can call instructions stored in the storage medium and operate according to the called instructions. When an instruction is executed by a processor, the processor may directly or under the control of the processor perform a function corresponding to the instruction using other components. The instruction may include code generated or executed by a compiler or an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' means that the storage medium does not contain a signal and is tangible, but does not distinguish between data being stored semi-permanently or temporarily in the storage medium.

[0171] Additionally, according to one or more embodiments of the present disclosure, the method according to one or more embodiments described above may be provided as included in a computer program product. The computer program product may be traded as a commodity 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 online through an application store (e.g., Play Store™). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0172] Additionally, according to one or more embodiments of the present disclosure, one or more of the embodiments described above may be implemented in a computer-readable recording medium using software, hardware, or a combination thereof, or a computer or similar device. In some cases, the embodiments described herein may be implemented by the processor itself. In a software implementation, embodiments, such as the procedures and functions described herein, may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein.

[0173] Computer instructions for performing processing operations of a device according to one or more of the above-described embodiments may be stored in a non-transitory computer-readable medium. The computer instructions stored in such a non-transitory computer-readable medium, when executed by a processor of a specific device, cause the specific device to perform processing operations in the device according to one or more of the above-described embodiments. A non-transitory computer-readable medium refers to a medium that permanently stores data and can be read by the device, rather than a medium that stores data for a short period of time, such as a register, cache, or memory. Specific examples of non-transitory computer-readable media may include a CD, a DVD, a hard disk, a Blu-ray disk, a USB, a memory card, or a ROM.

[0174] In addition, each of the components (e.g., modules or programs) according to one or more of the embodiments described above may be composed of a single or multiple entities, and some of the corresponding sub-components described above may be omitted, or other sub-components may be further included in one or more embodiments. Alternatively or additionally, some of the components (e.g., modules or programs) may be integrated into one entity, which may perform the same or similar functions as those performed by each of the corresponding components prior to integration. Operations performed by a module, program or other component according to one or more of the embodiments may be executed sequentially, in parallel, iteratively or heuristically, or at least some of the operations may be executed in a different order, omitted, or other operations may be added.

[0175] Although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person skilled in the art to which the present disclosure pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present disclosure.

Claims

1. In electronic devices, battery; display; Memory where instructions are stored; At least one first processor for executing said instructions, said at least one first processor being operatively connected to said battery, said display and said memory; and a second processor operatively connected to the battery and the at least one first processor; wherein at least one first processor does not consume power in the first mode, wherein said at least one first processor consumes power through said battery in a second mode, The power consumption of the second processor is less than the power consumption of the at least one first processor in the second mode, The second processor, When an external device is connected to the electronic device while the at least one first processor is in the first mode, changing the at least one first processor from the first mode to the second mode; When the above instructions are individually or collectively executed by the at least one first processor, the electronic device, Receive content from the external device, An electronic device that controls the display to display the received content.

2. In paragraph 1, The second processor, An electronic device that changes the at least one first processor to the first mode when the received content is displayed through the display.

3. In paragraph 2, Further comprising a switch connecting the battery and the at least one first processor; The second processor, An electronic device that operates the switch to change the at least one first processor into one of the first mode and the second mode.

4. In paragraph 1, The second processor, When the external device is connected to the electronic device, a wake-up signal is transmitted to the at least one first processor, When the above instructions are individually or collectively executed by the at least one first processor, the electronic device, When the at least one first processor changes to the second mode, power is supplied to the display and at least one circuit connected to the at least one first processor; An electronic device, wherein when at least one first processor receives the wake-up signal, power to at least one circuit is cut off.

5. In paragraph 1, The second processor, Includes a high level first signal pin, The above external device is, Includes a grounded second signal pin, The second processor, An electronic device that identifies the external device as being connected to the electronic device when the second signal pin is short-circuited to the first signal pin and the first signal pin changes to a low level.

6. In paragraph 1, The above display is, Includes ePaper display, The above ePaper display, An electronic device that maintains the display state of displayed received content while power is not supplied.

7. In paragraph 6, The above ePaper display, Change the display status of the received content displayed above while power is supplied, An electronic device that does not change the display status of the received content displayed above while power is not supplied.

8. In paragraph 1, The above electronic device, An electronic device not connected to an external power source.

9. In paragraph 1, It further includes an input / output interface; The above external device is, An electronic device, which is a USB device connected to the electronic device via the above input / output interface.

10. In paragraph 1, The second processor, An electronic device that is constantly powered by the above battery.

11. In a method for controlling an electronic device, When an external device is connected to the electronic device while at least one first processor of the electronic device is in a first mode, a step of the second processor of the electronic device changing the at least one first processor of the electronic device from the first mode to the second mode; A step in which at least one first processor receives content from the external device; and A step of displaying the received content on the display of the electronic device; wherein said at least one first processor does not consume power in said first mode; wherein said at least one first processor consumes power through a battery of said electronic device in said second mode; A control method wherein the power consumption of the second processor is less than the power consumption of the at least one first processor in the second mode.

12. In paragraph 11, A control method further comprising: a step of changing the at least one first processor to the first mode when the received content is displayed through the display; 13. In paragraph 12, The step of changing at least one first processor to the second mode comprises: By the second processor, operate a switch of the electronic device connecting the battery to the at least one processor, The above control method is, A control method, wherein the switch is operated by the second processor to change the at least one first processor to the first mode while the at least one processor is in the second mode.

14. In paragraph 11, The step of changing at least one first processor to the second mode comprises: When the external device is connected to the electronic device, a wake-up signal is transmitted to the at least one first processor, The above control method is, A step of supplying power to at least one circuit of the electronic device connected to the display and the at least one first processor when the at least one first processor changes to the second mode; and A control method further comprising the step of cutting off power to the at least one circuit when the at least one first processor receives the wake-up signal.

15. In paragraph 11, The second processor, Includes a high level first signal pin, The above external device is, Includes a grounded second signal pin, The step of changing at least one first processor to the second mode comprises: A control method, wherein the external device is identified as being connected to the electronic device when the second signal pin is short-circuited to the first signal pin by the second processor so that the first signal pin changes to a low level.

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