KR102640049B1 - Electronic device and method for driving display thereof - Google Patents

Abstract

An electronic device according to various embodiments of the present invention includes a display; a first processor electrically connected to the display; It is electrically connected to the first processor and includes a second processor for driving the display, wherein the first processor generates and outputs a first image in a first mode, and the second processor switches modes. In response to the input of a signal, a second image corresponding at least in part to the first image is displayed on the display, and at least a part of the first image is displayed until the switch to the second mode according to the mode change signal is completed. A first sub-image including a second sub-image including at least another part of the first image and the second image may be overlaid and displayed on the display.

Description

Electronic device and display driving method of electronic device {ELECTRONIC DEVICE AND METHOD FOR DRIVING DISPLAY THEREOF}

This embodiment relates to an electronic device, for example, to an electronic device including a display and a display driving circuit.

With the recent development of mobile communication technology, electronic devices are being transformed into ones that are easily portable and can be freely connected to wired and wireless networks, and the functions that electronic devices can perform are also becoming more diverse. For example, portable electronic devices such as smartphones and tablet PCs can support various functions such as Internet access and multimedia content playback in addition to calls and message sending and receiving functions.

In addition, electronic devices are also implemented in the form of wearable devices that are attached to a part of the user's body. For example, the wearable device may take the form of a wristwatch attached to the user's wrist, or glasses attached to the user's head. As such, electronic devices implemented in various forms generally include a display, and can visually provide various contents (eg, images, videos, etc.) to the user through the display.

Wearable devices such as the above can continuously collect detailed information about the surrounding environment or changes in an individual's body in real time. To this end, research is underway on low-power technologies that allow wearable devices to be used for long periods of time, as well as technology research on miniaturization, elasticity, and flexibility of materials that can improve the wearing comfort of wearable devices.

When a user is not actually using the electronic device, the electronic device may operate in sleep mode. In the sleep mode state, many components of the electronic device enter an idle state, thereby reducing power consumption. However, even in sleep mode, there is a need to continuously provide brief information such as time information to the user, and in sleep mode, the information needs to be provided with lower power than the power consumed in wake-up mode.

In addition, it is necessary to seamlessly provide information such as time information to the user when switching between wake-up mode and sleep mode.

According to various embodiments of the present invention, an electronic device includes: a display; a first processor electrically connected to the display; It is electrically connected to the first processor and includes a second processor for driving the display, wherein the first processor generates and outputs a first image in a first mode, and the second processor switches modes. In response to the input of a signal, a second image corresponding at least in part to the first image is displayed on the display, and at least a part of the first image is displayed until the switch to the second mode according to the mode change signal is completed. A first sub-image including a second sub-image including at least another part of the first image and the second image may be overlaid and displayed on the display.

According to various embodiments of the present invention, a method of driving a display of an electronic device includes: generating and displaying a first image in a first mode by a first processor; An operation of a second processor displaying a second image corresponding at least in part to the first image on a display in response to an input of a mode change signal; and a first sub-image including at least part of the first image, a second sub-image including at least another part of the first image, and It may include an operation of overlaying and displaying the second image.

According to various embodiments of the present invention, an electronic device that can provide information without interruption to a user even when an event such as a mode change occurs and a method of driving a display of the electronic device can be provided.

1 illustrates an electronic device in a network environment according to various embodiments of the present invention.
Figure 2 is a block diagram of an electronic device according to various embodiments of the present invention.
3 is a block diagram of a program module according to various embodiments of the present invention.
4A and 4B illustrate the external appearance of an electronic device according to various embodiments of the present invention.
Figure 5 is a block diagram of an electronic device according to an embodiment of the present invention.
Figure 6 is a block diagram of an electronic device according to another embodiment of the present invention.
Figure 7 is a block diagram of a display driving circuit according to an embodiment of the present invention.
Figure 8 is a block diagram of a display driving circuit according to another embodiment of the present invention.
Figure 9 illustrates each clock image generated by an electronic device according to an embodiment of the present invention.
Figure 10 shows the field image processing flow in the mode switching process, according to an embodiment of the present invention.
11 is a flowchart of a method of driving a display of an electronic device according to various embodiments of the present invention.

Hereinafter, various embodiments of this document are described with reference to the attached drawings. The examples and terms used herein are not intended to limit the technology described in this document to specific embodiments, and should be understood to include various modifications, equivalents, and/or substitutes for the examples. In connection with the description of the drawings, similar reference numbers may be used for similar components. Singular expressions may include plural expressions, unless the context clearly indicates otherwise. In this document, expressions such as “A or B” or “at least one of A and/or B” may include all possible combinations of the items listed together. Expressions such as “first,” “second,” “first,” or “second,” can modify the corresponding components regardless of order or importance, and are used to distinguish one component from another. It is only used and does not limit the corresponding components. When a component (e.g., a first) component is said to be "connected (functionally or communicatively)" or "connected" to another (e.g., second) component, it means that the component is connected to the other component. It may be connected directly to a component or may be connected through another component (e.g., a third component).

In this document, “configured to” means “suitable for,” “having the ability to,” or “changed to,” depending on the situation, for example, in terms of hardware or software. ," can be used interchangeably with "made to," "capable of," or "designed to." In some contexts, the expression “a device configured to” may mean that the device is “capable of” working with other devices or components. For example, the phrase "processor configured (or set) to perform A, B, and C" refers to a processor dedicated to performing the operations (e.g., an embedded processor), or by executing one or more software programs stored on a memory device. , may refer to a general-purpose processor (e.g., CPU or application processor) capable of performing the corresponding operations.

Electronic devices according to various embodiments of the present document include, for example, smartphones, tablet PCs, mobile phones, video phones, e-book readers, desktop PCs, laptop PCs, netbook computers, workstations, servers, PDAs, and PMPs. (portable multimedia player), MP3 player, medical device, camera, or wearable device. Wearable devices may be accessory (e.g., watches, rings, bracelets, anklets, necklaces, glasses, contact lenses, or head-mounted-device (HMD)), fabric or clothing-integrated (e.g., electronic clothing), The electronic device may include at least one of body attached (e.g., skin pad or tattoo) or bioimplantable circuitry. In some embodiments, the electronic device may include, for example, a television, a digital video disk (DVD) player, Audio, refrigerator, air conditioner, vacuum cleaner, oven, microwave, washing machine, air purifier, set-top box, home automation control panel, security control panel, media box (e.g. Samsung HomeSyncTM, Apple TVTM, or Google TVTM), game console It may include at least one of (e.g. XboxTM, PlayStationTM), an electronic dictionary, an electronic key, a camcorder, or an electronic picture frame.

In another embodiment, the electronic device may include various medical devices (e.g., various portable medical measurement devices (such as blood sugar monitors, heart rate monitors, blood pressure monitors, or body temperature monitors), magnetic resonance angiography (MRA), magnetic resonance imaging (MRI), CT (computed tomography), radiography, or ultrasound, etc.), navigation devices, satellite navigation systems (GNSS (global navigation satellite system)), EDR (event data recorder), FDR (flight data recorder), automobile infotainment devices, marine electronic equipment (e.g. marine navigation devices, gyro compasses, etc.), avionics, security devices, head units for vehicles, industrial or home robots, drones, ATMs at financial institutions, point-of-sale (POS) at stores. of sales), or Internet of Things devices (e.g., light bulbs, various sensors, sprinkler devices, fire alarms, thermostats, street lights, toasters, exercise equipment, hot water tanks, heaters, boilers, etc.). According to some embodiments, the electronic device may be a piece of furniture, a building/structure or a vehicle, an electronic board, an electronic signature receiving device, a projector, or various measuring devices (e.g. water, electrical, It may include at least one of gas, radio wave measuring equipment, etc.). In various embodiments, the electronic device may be flexible, or may be a combination of two or more of the various devices described above. Electronic devices according to embodiments of this document are not limited to the above-described devices. In this document, the term user may refer to a person using an electronic device or a device (e.g., an artificial intelligence electronic device) using an electronic device.

1, an electronic device 101 within a network environment 100, in various embodiments, is described. The electronic device 101 may include a bus 110, a processor 120, a memory 130, an input/output interface 150, a display 160, and a communication interface 170. In some embodiments, the electronic device 101 may omit at least one of the components or may additionally include another component. The bus 110 connects the components 110 to 170 to each other and may include circuitry that transfers communication (eg, control messages or data) between the components. The processor 120 may include one or more of a central processing unit, an application processor, or a communication processor (CP). The processor 120 may, for example, perform operations or data processing related to control and/or communication of at least one other component of the electronic device 101.

Memory 130 may include volatile and/or non-volatile memory. For example, the memory 130 may store commands or data related to at least one other component of the electronic device 101. According to one embodiment, memory 130 may store software and/or program 140. Program 140 may include, for example, a kernel 141, middleware 143, an application programming interface (API) 145, and/or an application program (or “application”) 147, etc. . At least a portion of the kernel 141, middleware 143, or API 145 may be referred to as an operating system. Kernel 141 may, for example, provide system resources (e.g., middleware 143, API 145, or application program 147) used to execute operations or functions implemented in other programs (e.g., : Bus 110, processor 120, or memory 130, etc.) can be controlled or managed. In addition, the kernel 141 provides an interface for controlling or managing system resources by accessing individual components of the electronic device 101 in the middleware 143, API 145, or application program 147. You can.

The middleware 143 may, for example, perform an intermediary role so that the API 145 or the application program 147 can communicate with the kernel 141 to exchange data. Additionally, the middleware 143 may process one or more work requests received from the application program 147 according to priority. For example, the middleware 143 may use system resources (e.g., bus 110, processor 120, or memory 130, etc.) of the electronic device 101 for at least one of the application programs 147. Priority may be assigned and the one or more work requests may be processed. The API 145 is an interface for the application 147 to control functions provided by the kernel 141 or middleware 143, for example, at least for file control, window control, image processing, or character control. Can contain one interface or function (e.g. command). The input/output interface 150, for example, transmits commands or data input from a user or other external device to other component(s) of the electronic device 101, or to other component(s) of the electronic device 101 ( Commands or data received from (fields) can be output to the user or other external devices.

Display 160 may be, for example, a liquid crystal display (LCD), a light-emitting diode (LED) display, an organic light-emitting diode (OLED) display, a microelectromechanical system (MEMS) display, or an electronic paper display. It can be included. For example, the display 160 may display various contents (e.g., text, images, videos, icons, and/or symbols, etc.) to the user. The display 160 may include a touch screen and may receive, for example, a touch, gesture, proximity, or hovering input using an electronic pen or a part of the user's body. The communication interface 170, for example, establishes communication between the electronic device 101 and an external device (e.g., the first external electronic device 102, the second external electronic device 104, or the server 106). You can. For example, the communication interface 170 may be connected to the network 162 through wireless or wired communication and communicate with an external device (eg, the second external electronic device 104 or the server 106).

Wireless communications include, for example, LTE, LTE advance (LTE-A), code division multiple access (CDMA), wideband CDMA (WCDMA), universal mobile telecommunications system (UMTS), wireless broadband (WiBro), or global GSM (GSM). It may include cellular communication using at least one of the following: system for mobile communications). According to one embodiment, wireless communication includes, for example, wireless fidelity (WiFi), Bluetooth, Bluetooth low energy (BLE), Zigbee, near field communication (NFC), magnetic secure transmission, radio. It may include at least one of frequency (RF) or body area network (BAN). According to one embodiment, wireless communications may include GNSS. GNSS may be, for example, global positioning system (GPS), global navigation satellite system (Glonass), Beidou Navigation Satellite System (hereinafter “Beidou”), or Galileo, the European global satellite-based navigation system. Hereinafter, in this document, “GPS” may be used interchangeably with “GNSS.” Wired communication may include, for example, at least one of universal serial bus (USB), high definition multimedia interface (HDMI), recommended standard 232 (RS-232), power line communication, or plain old telephone service (POTS). there is. Network 162 may include at least one of a telecommunications network, for example, a computer network (e.g., a LAN or WAN), the Internet, or a telephone network.

Each of the first and second external electronic devices 102 and 104 may be of the same or different type as the electronic device 101. According to various embodiments, all or part of the operations performed on the electronic device 101 may be executed on one or more electronic devices (e.g., the electronic devices 102 and 104, or the server 106). In one embodiment, According to this, when the electronic device 101 is to perform a certain function or service automatically or upon request, the electronic device 101 performs at least some functions associated therewith instead of or in addition to executing the function or service on its own. may be requested from another device (e.g., electronic device 102, 104, or server 106). The other electronic device (e.g., electronic device 102, 104, or server 106) may request the requested function or Additional functions may be executed and the results may be transmitted to the electronic device 101. The electronic device 101 may process the received results as is or additionally to provide the requested function or service. To this end, for example, For example, cloud computing, distributed computing, or client-server computing technologies may be used.

Figure 2 is a block diagram of an electronic device 201 according to various embodiments. The electronic device 201 may include, for example, all or part of the electronic device 101 shown in FIG. 1 . The electronic device 201 includes one or more processors (e.g., AP) 210, a communication module 220, a subscriber identification module 224, a memory 230, a sensor module 240, an input device 250, and a display. It may include 260, interface 270, audio module 280, camera module 291, power management module 295, battery 296, indicator 297, and motor 298. Processor For example, the processor 210 can run an operating system or application program to control a number of hardware or software components connected to the processor 210 and perform various data processing and calculations. Processor 210 ) may be implemented, for example, as a system on chip (SoC). According to one embodiment, the processor 210 may further include a graphic processing unit (GPU) and/or an image signal processor. Processor 210 may include at least some of the components shown in Figure 2 (e.g., cellular module 221). The processor 210 may receive a memory from at least one of the other components (e.g., non-volatile memory). Received commands or data can be processed by loading them into volatile memory, and the resulting data can be stored in non-volatile memory.

It may have the same or similar configuration as the communication module 220 (eg, communication interface 170). The communication module 220 may include, for example, a cellular module 221, a WiFi module 223, a Bluetooth module 225, a GNSS module 227, an NFC module 228, and an RF module 229. there is. For example, the cellular module 221 may provide voice calls, video calls, text services, or Internet services through a communication network. According to one embodiment, the cellular module 221 may use the subscriber identification module (eg, SIM card) 224 to distinguish and authenticate the electronic device 201 within the communication network. According to one embodiment, the cellular module 221 may perform at least some of the functions that the processor 210 can provide. According to one embodiment, the cellular module 221 may include a communication processor (CP). According to some embodiments, at least some (e.g., two or more) of the cellular module 221, WiFi module 223, Bluetooth module 225, GNSS module 227, or NFC module 228 are one integrated chip. (IC) or may be included within an IC package. For example, the RF module 229 may transmit and receive communication signals (eg, RF signals). The RF module 229 may include, for example, a transceiver, a power amp module (PAM), a frequency filter, a low noise amplifier (LNA), or an antenna. According to another embodiment, at least one of the cellular module 221, WiFi module 223, Bluetooth module 225, GNSS module 227, or NFC module 228 transmits and receives RF signals through a separate RF module. You can. Subscriber identity module 224 may include, for example, a card or embedded SIM that includes a subscriber identity module and may include unique identification information (e.g., integrated circuit card identifier (ICCID)) or subscriber information (e.g., IMSI). (international mobile subscriber identity)).

The memory 230 (eg, memory 130) may include, for example, an internal memory 232 or an external memory 234. The built-in memory 232 may include, for example, volatile memory (e.g., DRAM, SRAM, or SDRAM, etc.), non-volatile memory (e.g., one time programmable ROM (OTPROM), PROM, EPROM, EEPROM, mask ROM, flash ROM, etc. , may include at least one of a flash memory, a hard drive, or a solid state drive (SSD). The external memory 234 may include a flash drive, for example, compact flash (CF), or secure digital (SD). ), Micro-SD, Mini-SD, xD (extreme digital), MMC (multi-media card), or memory stick, etc. The external memory 234 is functionally connected to the electronic device 201 through various interfaces. It can be connected physically or physically.

For example, the sensor module 240 may measure a physical quantity or sense the operating state of the electronic device 201 and convert the measured or sensed information into an electrical signal. The sensor module 240 includes, for example, a gesture sensor 240A, a gyro sensor 240B, an atmospheric pressure sensor 240C, a magnetic sensor 240D, an acceleration sensor 240E, a grip sensor 240F, and a proximity sensor ( 240G), color sensor (240H) (e.g. RGB (red, green, blue) sensor), biometric sensor (240I), temperature/humidity sensor (240J), illuminance sensor (240K), or UV (ultra violet) ) It may include at least one of the sensors 240M. Additionally or alternatively, the sensor module 240 may include, for example, an olfactory (e-nose) sensor, an electromyography (EMG) sensor, an electroencephalogram (EEG) sensor, an electrocardiogram (ECG) sensor, It may include an infrared (IR) sensor, an iris sensor, and/or a fingerprint sensor. The sensor module 240 may further include a control circuit for controlling at least one sensor included therein. In some embodiments, the electronic device 201 further includes a processor configured to control the sensor module 240, either as part of the processor 210 or separately, while the processor 210 is in a sleep state, The sensor module 240 can be controlled.

The input device 250 may include, for example, a touch panel 252, a (digital) pen sensor 254, a key 256, or an ultrasonic input device 258. The touch panel 252 may use at least one of, for example, a capacitive type, a resistive type, an infrared type, or an ultrasonic type. Additionally, the touch panel 252 may further include a control circuit. The touch panel 252 may further include a tactile layer to provide a tactile response to the user. The (digital) pen sensor 254 may be, for example, part of a touch panel or may include a separate recognition sheet. Keys 256 may include, for example, physical buttons, optical keys, or keypads. The ultrasonic input device 258 can detect ultrasonic waves generated from an input tool through a microphone (e.g., microphone 288) and check data corresponding to the detected ultrasonic waves.

Display 260 (e.g., display 160) may include a panel 262, a holographic device 264, a projector 266, and/or control circuitry for controlling them. Panel 262 may be implemented as flexible, transparent, or wearable, for example. The panel 262 may be composed of a touch panel 252 and one or more modules. According to one embodiment, the panel 262 may include a pressure sensor (or force sensor) that can measure the intensity of pressure in response to the user's touch. The pressure sensor may be implemented integrally with the touch panel 252, or may be implemented as one or more sensors separate from the touch panel 252. The hologram device 264 can display a three-dimensional image in the air using light interference. The projector 266 can display an image by projecting light onto the screen. The screen may be located, for example, inside or outside the electronic device 201. The interface 270 may include, for example, HDMI 272, USB 274, optical interface 276, or D-subminiature (D-sub) 278. Interface 270 may be included in, for example, communication interface 170 shown in FIG. 1 . Additionally or alternatively, the interface 270 may include, for example, a mobile high-definition link (MHL) interface, a SD card/multi-media card (MMC) interface, or an infrared data association (IrDA) standard interface. there is.

The audio module 280 can, for example, convert sound and electrical signals in two directions. At least some components of the audio module 280 may be included in, for example, the input/output interface 145 shown in FIG. 1 . The audio module 280 may process sound information input or output through, for example, a speaker 282, a receiver 284, an earphone 286, or a microphone 288. The camera module 291 is, for example, a device capable of shooting still images and moving images, and according to one embodiment, it includes one or more image sensors (e.g., a front sensor or a rear sensor), a lens, and an image signal processor (ISP). , or may include a flash (e.g., LED or xenon lamp, etc.). The power management module 295 may manage power of the electronic device 201, for example. According to one embodiment, the power management module 295 may include a power management integrated circuit (PMIC), a charging IC, or a battery or fuel gauge. PMIC may have wired and/or wireless charging methods. The wireless charging method includes, for example, a magnetic resonance method, a magnetic induction method, or an electromagnetic wave method, and may further include an additional circuit for wireless charging, for example, a coil loop, a resonance circuit, or a rectifier. there is. The battery gauge may measure, for example, the remaining amount of the battery 296, voltage, current, or temperature during charging. Battery 296 may include, for example, rechargeable cells and/or solar cells.

The indicator 297 may display a specific state of the electronic device 201 or a part thereof (eg, the processor 210), such as a booting state, a message state, or a charging state. The motor 298 can convert electrical signals into mechanical vibration and generate vibration or haptic effects. The electronic device 201 is, for example, a mobile TV support device capable of processing media data according to standards such as digital multimedia broadcasting (DMB), digital video broadcasting (DVB), or mediaFloTM (e.g., GPU) may be included. Each of the components described in this document may be composed of one or more components, and the names of the components may vary depending on the type of electronic device. In various embodiments, an electronic device (e.g., the electronic device 201) omits some components, further includes additional components, or combines some of the components to form a single entity. The functions of the previous corresponding components can be performed in the same way.

Figure 3 is a block diagram of a program module according to various embodiments. According to one embodiment, the program module 310 (e.g., program 140) is an operating system that controls resources related to an electronic device (e.g., electronic device 101) and/or various applications running on the operating system ( Example: may include an application program (147). The operating system may include, for example, AndroidTM, iOSTM, WindowsTM, SymbianTM, TizenTM, or BadaTM. Referring to Figure 3, the program module 310 includes a kernel 320 (e.g. kernel 141), middleware 330 (e.g. middleware 143), (API 360) (e.g. API 145) ), and/or an application 370 (e.g., an application program 147). At least a portion of the program module 310 is preloaded on an electronic device or an external electronic device (e.g., an electronic device ( 102, 104), server 106, etc.).

The kernel 320 may include, for example, a system resource manager 321 and/or a device driver 323. The system resource manager 321 may control, allocate, or retrieve system resources. According to one embodiment, the system resource manager 321 may include a process management unit, a memory management unit, or a file system management unit. The device driver 323 may include, for example, a display driver, a camera driver, a Bluetooth driver, a shared memory driver, a USB driver, a keypad driver, a WiFi driver, an audio driver, or an inter-process communication (IPC) driver. . For example, the middleware 330 provides functions commonly required by the application 370 or provides various functions through the API 360 so that the application 370 can use limited system resources inside the electronic device. It can be provided as an application (370). According to one embodiment, the middleware 330 includes a runtime library 335, an application manager 341, a window manager 342, a multimedia manager 343, a resource manager 344, a power manager 345, and a database manager ( 346), a package manager 347, a connectivity manager 348, a notification manager 349, a location manager 350, a graphics manager 351, or a security manager 352.

The runtime library 335 may include, for example, a library module used by a compiler to add new functions through a programming language while the application 370 is running. The runtime library 335 may perform input/output management, memory management, or arithmetic function processing. The application manager 341 may, for example, manage the life cycle of the application 370. The window manager 342 can manage GUI resources used on the screen. The multimedia manager 343 can determine the format required to play media files and encode or decode the media files using a codec suitable for the format. The resource manager 344 may manage the source code or memory space of the application 370. The power manager 345 may, for example, manage battery capacity or power and provide power information necessary for the operation of the electronic device. According to one embodiment, the power manager 345 may be linked to a basic input/output system (BIOS). The database manager 346 may create, search, or change a database to be used in the application 370, for example. The package manager 347 can manage the installation or update of applications distributed in the form of package files.

Connectivity manager 348 may manage wireless connections, for example. The notification manager 349 may provide events such as arrival messages, appointments, and proximity notifications to the user, for example. The location manager 350 may, for example, manage location information of the electronic device. The graphics manager 351 may, for example, manage graphic effects to be provided to users or user interfaces related thereto. Security manager 352 may provide, for example, system security or user authentication. According to one embodiment, the middleware 330 may include a telephony manager for managing the voice or video call function of the electronic device or a middleware module that can form a combination of the functions of the above-described components. . According to one embodiment, the middleware 330 may provide specialized modules for each type of operating system. The middleware 330 may dynamically delete some existing components or add new components. The API 360 is, for example, a set of API programming functions and may be provided in different configurations depending on the operating system. For example, in the case of Android or iOS, one API set can be provided for each platform, and in the case of Tizen, two or more API sets can be provided for each platform.

The application 370 includes, for example, home 371, dialer 372, SMS/MMS (373), instant message (IM) 374, browser 375, camera 376, and alarm 377. , contact (378), voice dial (379), email (380), calendar (381), media player (382), album (383), watch (384), health care (e.g., measuring the amount of exercise or blood sugar, etc.) , or may include an application that provides environmental information (e.g., atmospheric pressure, humidity, or temperature information). According to one embodiment, the application 370 may include an information exchange application that can support information exchange between an electronic device and an external electronic device. The information exchange application may include, for example, a notification relay application for delivering specific information to an external electronic device, or a device management application for managing the external electronic device. For example, a notification delivery application may deliver notification information generated by another application of an electronic device to an external electronic device, or may receive notification information from an external electronic device and provide it to the user. A device management application may, for example, control the functions of an external electronic device that communicates with the electronic device, such as turning on/off the external electronic device itself (or some of its components) or the brightness (or resolution) of the display. control), or you can install, delete, or update applications running on an external electronic device. According to one embodiment, the application 370 may include an application designated according to the properties of the external electronic device (eg, a health management application for a mobile medical device). According to one embodiment, the application 370 may include an application received from an external electronic device. At least a portion of the program module 310 may be implemented (e.g., executed) in software, firmware, hardware (e.g., processor 210), or a combination of at least two of these, and may be a module for performing one or more functions; May contain programs, routines, instruction sets, or processes.

The term “module” used in this document includes a unit comprised of hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A “module” may be an integrated part, a minimum unit that performs one or more functions, or a part thereof. A “module” may be implemented mechanically or electronically, for example, in application-specific integrated circuit (ASIC) chips, field-programmable gate arrays (FPGAs), known or hereafter developed, that perform certain operations. May include programmable logic devices. At least a portion of the device (e.g., modules or functions thereof) or method (e.g., operations) according to various embodiments includes instructions stored in a computer-readable storage medium (e.g., memory 130) in the form of a program module. It can be implemented as: When the instruction is executed by a processor (eg, processor 120), the processor may perform the function corresponding to the instruction. Computer-readable recording media include hard disks, floppy disks, magnetic media (e.g. magnetic tape), optical recording media (e.g. CD-ROM, DVD, magneto-optical media (e.g. floptical disks), built-in memory, etc. The instruction may include code created by a compiler or code that can be executed by an interpreter. A module or program module according to various embodiments includes at least one or more of the above-described components. , some parts may be omitted, or other components may be further included. Operations performed by modules, program modules or other components according to various embodiments may be executed sequentially, parallel, iteratively or heuristically, or at least Some operations may be executed in a different order, omitted, or other operations may be added.

FIGS. 4A and 4B illustrate the external appearance of electronic devices 400a and 400b according to various embodiments of the present invention.

According to one embodiment of the present invention, the electronic device 400a may be implemented as a portable electronic device such as a smart phone as shown in FIG. 4A. The electronic device 400a may operate in various operation modes depending on the usage status. For example, the operation mode may include a wake-up mode in which the user can use various functions of the electronic device 400a and a sleep mode in a state in which the user waits for use. You can.

In the wake-up mode, various hardware modules and/or software modules (e.g., each component of the electronic device 101 of FIG. 1 and/or the electronic device 201 of FIG. 2) included in the electronic device 400a Sufficient power (power required for all pixels to express preset gradation colors) can be supplied from the battery to fully exercise its function. For example, the display 410a can display various contents by receiving sufficient power in wake-up mode, and the processor can provide various functions of the electronic device 400a based on sufficient power supply.

In the sleep mode, at least some of the various hardware modules and/or software modules included in the electronic device 400a may be deactivated or may be supplied with a minimum amount of power to perform only specified limited functions. For example, when the camera module enters sleep mode, photo and video recording functions may be disabled, and the processor may be set to run only limited functions of the application program when entered sleep mode. Through this, information processing or computation according to the hardware module and/or software module is suppressed, so battery usage time can be improved.

FIG. 4A may show the electronic device 400a operating in sleep mode. As shown, the electronic device 400a can display certain information such as the clock image 415a even while operating in sleep mode. In sleep mode, the electronic device 400a may display information such as a calendar, weather, remaining battery capacity, missed calls, and unread messages in addition to the clock image on a portion of the display 410a according to the user's selection. That is, the electronic device 400a may be equipped with an always on display (AOD) function that always displays necessary information even in a sleep mode.

According to another embodiment of the present invention, the electronic device 400b may be implemented as a wearable device such as a smart watch as shown in FIG. 4B. Even when the electronic device 400b is implemented as a wearable device such as a smart watch, it can be equipped with the AOD function described above. That is, as shown in FIG. 4B, the electronic device 400b may display the clock image 415b on the display 410b in sleep mode. 4A and 4B show the background of the clock and the form of an analog clock including an hour hand, a minute hand, and a second hand, but a digital clock expressing the hour, minute, and second in numbers is displayed on the display 410a and 410b of the electronic device. It could be.

4A and 4B are only an example for implementing the present invention, and are not limited thereto. That is, various embodiments of the present invention can be implemented by various types of electronic devices including a display and a processor. However, for convenience of explanation, the following description will be representative of the case where the electronic device is implemented as a smart watch and the watch image is displayed on the smart watch in sleep mode.

Figure 5 is a block diagram of an electronic device according to an embodiment of the present invention.

As shown, the electronic device 500 includes a display 510, a memory 530, a first processor 520, and a second processor 540, and even if some of the depicted components are omitted or replaced, the present invention There will be no problem in implementing various embodiments of. Additionally, the electronic device 500 may include at least some of the configuration and/or functions of the electronic device 101 of FIG. 1 and/or the electronic device 201 of FIG. 2.

According to various embodiments, the display 510 displays an image and includes a liquid crystal display (LCD), a light-emitting diode (LED) display, and an organic light-emitting diode (organic light-emitting diode). It may be implemented as one of an OLED) display, a micro electro mechanical systems (MEMS) display, or an electronic paper display, but is not limited thereto. The display 510 may include at least some of the configuration and/or functions of the display 160 of FIG. 1 and/or the display 260 of FIG. 2. The display 510 includes a touch screen panel (not shown), and the touch screen panel detects a touch input or a hovering input to a window (not shown) provided in front of the display 510. can do.

According to various embodiments, the memory 530 may include known volatile memory and non-volatile memory, and is not limited to specific implementation examples. The memory 530 may be disposed within the housing and electrically connected to the first processor 520. The memory 530 may include at least a portion of the configuration and/or functions of the memory 130 of FIG. 1 and/or the memory 230 of FIG. 2.

Additionally, the memory 530 can store various instructions that can be executed by the first processor 520. These instructions may include control commands such as arithmetic and logical operations, data movement, and input/output that can be recognized by the control circuit, and may be defined on a framework stored in the memory 530. Additionally, the memory 530 may store at least a portion of the program module 310 of FIG. 3 .

According to various embodiments, there will be no limitation to the calculation and data processing functions that the first processor 520 can implement within the electronic device 500, but hereinafter, when switching modes (for example, from wake-up mode to sleep mode), there will be no limitation. ) The operation of the first processor 520 to display the clock image seamlessly will be described in more detail. Operations of the first processor 520, which will be described later, can be performed by loading instructions stored in the memory 530 described above. The first processor 520 may include at least a portion of the configuration and/or functions of the processor 120 of FIG. 1 and/or the processor 210 of FIG. 2.

According to various embodiments, the second processor 540 may be a display driving IC (DDI) that drives the display 510. The display driving circuit may be an integrated circuit that controls transistors attached to each pixel (or sub-pixel) included in the display 510 to control each pixel to output light of a predetermined color. The second processor 540 can control image data transmitted from the first processor 520 to be displayed on the display 510, and in sleep mode, a predetermined image is displayed through the own operation of the second processor 540. Data (eg, a clock image) can be controlled to be displayed on the display 510. According to one embodiment, the second processor 540 may include a graphic random access memory (GRAM) and a control module, and detailed functions of the second processor 540 will be described later.

The electronic device 500 may operate in various operation modes depending on the usage state, and the operation modes may include a wake-up mode (or first mode) and a sleep mode (or second mode).

In wake-up mode, the electronic device 500 may display various images on the display 510. For example, the application running on the electronic device 500 is a clock application and can generate a clock image representing current time information. According to one embodiment, the clock image may be either an image of an analog clock including a clock background and an hour hand, a minute hand, and a second hand, or an image of a digital clock expressing the hour, minute, and second as numbers, or a clock image. There is no limit to how time can be included.

The first processor 520 may execute an application to create an image and provide the generated image to the second processor 540. According to one embodiment, the electronic device 500 may execute a watch application downloaded and installed from outside. The second processor 540 may drive the display 510 so that the image received from the first processor 520 is displayed on the display 510 .

According to one embodiment, the first processor 520 may generate and output the first image in wake-up mode (or first mode). Here, the first image may be a watch image created in a watch application.

If a predetermined event occurs while operating in wake-up mode, the electronic device 500 may switch to sleep mode. Events that switch to sleep mode include, for example, receiving a specific key input, not detecting an input for more than a predetermined period of time, or reducing battery power below a threshold, but are not limited thereto.

When switched to sleep mode, the first processor 520 enters an idle state, and various components of the electronic device 500 including the first processor 520 may enter an idle state or be turned off. .

The electronic device 500 can implement an always on display (AOD) function that can be driven with low power even in a sleep mode. The AOD function may be performed by the operation of the second processor 540 itself. For example, the second processor 540 may use at least some of the watch images provided from the first processor 520 in sleep mode, or may generate a watch image and display it on the display 510. According to one embodiment, the watch image displayed in the sleep mode may be of lower quality than the watch image displayed in the wake-up state, for example, may be displayed with low luminance or may be an image of low resolution.

According to one embodiment, the second processor 540 uses the background image of the clock provided by the first processor 520 and the hour information generated (or referenced) by the second processor 540 in sleep mode. Related images, images related to minute information, and images related to second information can be combined and displayed on the display 510. In this case, the background image provided from the first processor 520 is displayed over time. It is maintained constant according to the time, and the second processor 540 can update and display images related to hour information, images related to minute information, and images related to seconds information as time passes. According to another embodiment, the second processor 540 receives a background image, an image related to hour information, and an image related to minute information from the first processor 520 at a predetermined period (for example, 1 minute). , the received image and the image related to the second information selected by the second processor 540 can be overlaid and displayed.

According to one embodiment, the second processor 540 may calculate the passage of time based on the current time. For example, when changing from a wake-up state to a sleep state, when displaying the second image to be output by the AOD function, the time information image (e.g., hour, minute, second image) stored in the graphic RAM is displayed over time. It can be displayed on the display 510 accordingly. For example, the second processor 540 receives and stores an hour hand image, a minute hand image, and a second hand image representing a specific time from the first processor 510, and the current time calculated by the second processor itself in sleep mode. Based on the information, the pre-stored hour hand image, minute hand image, and second hand image can be modified and displayed on the display 510.

According to one embodiment, the second processor 540 is equipped with a graphic RAM and a control module and can implement the AOD function in a sleep state.

According to one embodiment, the second processor 540 receives configuration information of the watch image from the first processor 520 periodically or when a predetermined event occurs, and creates a background based on the configuration information. Images, images related to hour information, images related to minute information, and images related to seconds information can be created. According to one embodiment, the second processor 540 generates a background image, an image related to time information, and minute information generated by the first processor 520 and stored in the memory 530 or the graphics RAM of the second processor 540. You can refer to images related to and images related to second information.

Here, the predetermined event may be, for example, a change in the application that forms the watch image or a change in the watch image created by the same application (e.g., change in theme or change in settings, etc.). According to one embodiment, the image related to the hour information may be an image of the hour hand of an analog clock or numeric text information representing the time, the image related to the minute information may be a minute hand image or minute number information, and the image related to the second information may be a second hand image. Or it may be number information of seconds.

According to one embodiment, when a watch application is downloaded and installed from outside the electronic device 500, the second processor 540 may receive configuration information of a watch image generated by the watch application. The second processor 540 may generate a background image, an hour hand image, a minute hand image, and a second hand image to be displayed as AOD from the corresponding watch image. Accordingly, even when the electronic device 500 uses a watch application created by a third party that is not pre-installed, the AOD can display substantially the same watch image.

According to one embodiment, the first processor 510 may periodically (for example, 1 minute) transition to a wake-up state and provide configuration information to the second processor 540, and the second processor 540 Can update time information based on configuration information. The feature of the second processor 540 (or display driving circuit) generating a clock image and displaying it on the display 510 in sleep mode will be described in more detail with reference to FIGS. 6 to 8.

When the electronic device 500 inputs a mode change signal, it switches from wake-up mode (or first mode) to sleep mode (or second mode) and the second processor 540 takes a certain period of time (or For example, 0.3 seconds) may occur. The electronic device 500 according to various embodiments of the present invention can enable an image (eg, a clock image) to be displayed seamlessly while switching from a wake-up mode to a sleep mode.

According to one embodiment, the first processor 520 may generate a first sub-image including at least part of the currently displayed first image and a second sub-image including at least another part of the first image. Here, the first image may be an analog clock image generated by a clock application, and the clock image includes a background image, an hour hand image, a minute hand image, and a second hand that constitute time information. It can be understood as a combination of images. According to another embodiment, the first image may be a digital clock image generated by a clock application, and the clock image may be a combination of a background image and numeric text of hours/minutes/seconds constituting time information. According to one embodiment, the first image, the first sub-image, and the second image may be image files with extensions such as JPEG, GIF, or BMP. According to one embodiment, the first image may further include additional information such as date and day of the week.

According to one embodiment, the first sub-image may be a background image of the first image, and the second sub-image may be an hour hand image and a minute hand image of the first image. According to one embodiment, the second sub-image is an image that reflects time information when a mode change signal is input and may not change over time.

According to one embodiment, the first processor 520 may generate the first sub-image and the second sub-image at various times. For example, it can be generated when a mode change signal is input, when the watch application that generates the first image is changed, or when a different watch image is used in the watch application. As another example, it may be generated according to a predetermined cycle.

According to one embodiment, the first processor 520 may provide a mode change signal to the second processor 540.

According to one embodiment, the second processor 540 may generate a second image that corresponds at least in part to the first image at least partially at the same time that the first processor 520 generates the first image. The second image may be a clock image displayed with the AOD function in sleep mode. According to one embodiment, the second image may be the same as the first image, may be an image of lower quality (eg, lower resolution) than the first image, or may be an image with part of the first image removed. According to one embodiment, the second image may include additional information such as date and day of the week, and the second processor 540 may use information included in the first image generated by the first processor 510 in a wake-up state. A second image containing (e.g. time information, date, day of the week, etc.) can be created.

According to one embodiment, until the conversion to the second mode is completed, at least for a certain period of time, the first processor 520 controls the display 510 to display the first sub-image and the second sub-image, and The second processor 540 can control the second image to be displayed on the display 510. For example, the electronic device 500 may display the first sub-image, the second sub-image, and the second image on the display 510 by overlaying them. As described above, the first sub-image is a background image of the clock image, and the second sub-image may include an image related to hour information and an image related to minute information of the clock image. That is, when the first sub-image generated by the first processor 520 and the second sub-image are combined, it may be a watch image excluding the second hand, which is different from the second image generated by the second processor 540. They may be almost identical images with only minor differences that are not perceptible to the user. For example, when the first image and the second image are images in the form of an analog clock, when a mode change signal is input, the second processor 540 takes a certain period of time (at: Assuming that it takes 0.3 seconds, the second sub-image includes only the hour and minute hands, so the changes in the hour and minute hands for a certain period of time (e.g., 0.3 seconds) are at a subtle level. Therefore, even when displayed in combination with the second image generated by the second processor 540, there may be only a subtle difference that the user cannot perceive. According to another embodiment, the second sub-image also includes a second hand image, and the first processor 520 may update and display the second hand image displayed in the second sub-image over time.

When the transition to the sleep mode is completed, the first processor 520 may remove the display of the second sub-image. Afterwards, in the sleep mode, the first processor 520 enters a dormant state, and the second processor 540 generates a second image by the operation of the second processor 540 itself and displays it on the display 510. You can.

According to one embodiment, the second processor 540 may include a graphics RAM (eg, graphics RAM 644 in FIG. 6) that stores data. The graphic RAM can copy and store the image generated by the first processor 520 (for example, a background image of a clock image) or refer to the storage address of the image. In sleep mode, the second processor 540 may display a clock image (eg, second image) in AOD mode based on the background image of the clock image stored in the graphic RAM.

Figure 6 is a block diagram of an electronic device 600 according to another embodiment of the present invention.

As shown in FIG. 6, the electronic device 600 includes a display driving circuit 640, a display panel 610, and at least one processor. In the following (description of FIG. 6), the processor is an application processor 620. It may mean any one of (AP; application processor), communication processor 650 (CP; communication processor), sensor hub 660, and touch controller IC 670 (touch controller IC).

The display driving circuit 640 is an integrated circuit that drives the display panel 610, and may include at least part of the components of the second processor of FIG. 5. The display driving circuit 640 may supply image data received from the application processor 620 to the display panel 610 in a predetermined number of frames.

According to one embodiment, the display driving circuit 640 may include at least a graphic random access memory (GRAM) 644 and a control module 642 (controller). The operation of the display driving circuit 640 described below (description of FIG. 6) may be an operation of displaying an image on the display panel 610 through the operation of the display driving circuit 640 itself in a sleep mode.

The graphics RAM 644 is configured with the processor (e.g., application processor 620 (AP), communication processor 650 (CP), sensor hub 660, and touch controller IC 670. )(touch controller IC)) can store image data provided. The graphic RAM 644 may include a memory space corresponding to the resolution and/or number of color gradations of the display panel 610. The graphics RAM 644 may be referred to as a frame buffer or line buffer.

For example, the image data is an image formed by overlaying or concatenating a plurality of independent partial image data (e.g., a background image of a clock image, an hour hand image, a minute hand image, and a second hand image). It may correspond to data. For another example, the image data may include at least one piece of low-resolution image data with a resolution lower than that of the display panel 610. Additionally, according to one embodiment, some of the image data may be encoded in a manner specified by the processor and then stored in the graphics RAM 644.

According to one embodiment, the display driving circuit 640 may be set to select some of the image data stored in the graphic RAM 644 and output the selected portion to a designated area of the display panel 610. At this time, the control module 642 may output the selected part to a designated area of the display panel 610 by operating the display driving circuit 640 itself. For example, the display driving circuit 640 may output the background image stored in the graphic RAM 644 and the hour hand image, minute hand image, and second hand image corresponding to the current time.

The display driving circuit 640 may be configured to select at least one of a plurality of partial image data stored in the graphic RAM 644 and output the selected at least one partial image data to the display panel 610. At this time, the control module 642 uses the data address on the graphic RAM 644 and/or the size of the (partial) image data to be output when selecting the partial image data to be output. You can. For example, the control module 642 of the display driving circuit 640 may select image data corresponding to a specified data size from a specific data address as the image data to be output.

According to one embodiment, the control module 642 of the display driving circuit 640 may change at least one partial image data to be output to a designated area of the display panel 610 according to a predetermined order. That is, the control module 642 sequentially selects one of the plurality of partial image data stored in the graphic RAM 644 according to a designated order (or random order) and outputs it to a designated area of the display panel 610. You can. Thereby, a certain animation effect can be achieved. For example, 60 second hand images representing 0 to 59 seconds may be stored in the graphic RAM 644, and the control module 642 sequentially displays each second hand image on the display panel 610 according to a period of 1 second. Can be output to a designated area. According to one embodiment, the control module 642 sequentially shifts the start data address on the graphic RAM 644 of partial image data to be scan read at preset intervals at preset intervals, thereby Image data can be changed in a specified order. According to various embodiments, the preset period and interval may be set based on the user's settings or may be determined according to the properties of the displayed image (for example, a clock image). For example, the control module 642 can refer to 60 second hand images stored in the graphic RAM 644, and by transitioning the address of the graphic RAM 644 referenced in 1-second increments, it refers to the second hand image of the next second. You can print it out.

According to one embodiment, the processor generates image data, encodes the generated image data in a specified method (e.g., display stream compression (DSC) method specified by the video electronics standards association (VESA)), and stores the generated image data in the graphics RAM 644. You can save it. Since the data size of the image data is reduced by encoding, one or more encoded image data can be stored in the graphic RAM 644. For example, if the data size is reduced by a factor of 1/n by encoding, n pieces of encoded image data can be stored in the graphics RAM 644.

The control module 642 may select some of the encoded image data stored in the graphic RAM 644, decode the selected portion, and output it to a designated area of the display panel 610. By encoding, the graphic RAM 644 may include two or more (e.g., n) images with a size corresponding to the display panel 610 in compressed form, so the range of images that the control module 642 can select can increase by n times.

According to one embodiment, the processor may generate low-resolution image data that is lower than the resolution of the display panel 610 and store the generated low-resolution image data in the graphics RAM 644. Since the low-resolution image data has a smaller data size than the image data corresponding to the full resolution of the display panel 610, one or more low-resolution image data may be stored in the graphic RAM 644 in a concatenated form.

According to one embodiment, the control module 642 may be set to select and output some of the image data stored in the graphic RAM 644 based on control information received from the processor. The control information may include information about the data address on the graphics RAM 644 and/or the size of partial image data to be output.

For example, the application processor 620 may provide the control module 642 of the display driving circuit 640 with a data address and/or data size corresponding to numbers and symbols related to a “digital clock” as control information. You can. Based on the data address and/or data size, the control module 642 stores image data of numbers and symbols associated with the “digital clock” stored in the graphics RAM 644 (e.g., background image, hour hand image, minute hand image). , second hand image) can be selected for printing.

According to one embodiment, the control module 642 may be set to dynamically output a portion of selected image data (eg, selected partial image data). For example, the control module 642 may continuously provide the selected (partial) image data to the display panel 610 by shifting it in blocks using a timing controller (not shown) ( So-called panel self-refresh). According to one embodiment, effects such as fade-in and fade-out can be achieved through continuous provision of image data.

The communication processor 650 may manage data links and convert communication protocols in communication between the electronic device 600 and other electronic devices 600 connected to a network. The communication processor 650 may provide communication services such as voice calls, video calls, text messages (eg, SMS, MMS, etc.), or packet data to the user.

The sensor hub 660 can control at least one sensor 665a and 665b by including a micro controller unit (MCU). For example, the sensor hub 660 can collect sensing information detected from various sensors 665a and 665b and control the operations of the various sensors. The sensors 665a and 665b may include, for example, a temperature/humidity sensor, a biometric sensor, an atmospheric pressure sensor, a gyro sensor, etc.

For example, the touch controller IC 670 may control the touch panel 672 coupled to the display panel 610. For example, the touch controller IC 670 may process touch gesture information input from the touch panel 672 or control the operation of the touch panel 672. The touch controller IC 670 may include a driver circuit, sensor circuit, control logic, oscillator, delay table, analog-digital converter, MCU, etc.

According to one embodiment, after providing image data to the display driving circuit 640, at least one processor may be set to enter a sleep mode. That is, in the sleep mode state, at least one processor may not intervene in the operation of the display driving circuit 640. According to one embodiment, at least one processor may wake up from a sleep mode state at a predetermined period, perform a predetermined operation, and then transition back to an idle state.

According to one embodiment, the processor sends image data to the graphics RAM 644 of the display driving circuit 640 through a high speed serial interface (HiSSI), for example, mobile industry processor interface (MIPI). can be provided. Additionally, the processor may transmit control information for selecting a portion of image data through a low speed serial interface (LoSSI), for example, a serial peripheral interface (SPI), or an inter-integrated circuit (I2C). .

According to one embodiment, the communication processor 650 may transmit, for example, data addresses of icons and character images on the graphics RAM 644 as control information to the display driving circuit 640 through a low-speed serial interface. there is. The display driving circuit 640 may output text message icons and text images to the display panel 610 according to the control information.

According to one embodiment, the sensor hub 660 may generate image data to be output through the display panel 610 based on sensing information detected by the sensor. For example, when the sensor hub 660 receives temperature information from a temperature sensor, the sensor hub 660 can generate a numerical image about the temperature value and an image about the temperature value unit as image data to be output through the display panel 610. there is. For example, the sensor hub 660 uses the data address on the graphic RAM 644 of the numerical image related to the determined temperature value and the image related to the temperature value unit as control information to the display driving circuit 640 through a low-speed serial interface. ) can be transmitted. The display driving circuit 640 may output a numerical image regarding the temperature value and an image regarding a temperature value unit to the display panel 610 according to the control information.

According to one embodiment, the touch controller IC 670 may generate image data to be output through the display panel 610 based on touch sensing information detected by the touch panel 672. For example, when the touch controller IC 670 receives touch gesture information from the touch panel 672, it can generate an image corresponding to the touch gesture information as image data to be output through the display panel 610. .

The touch controller IC 670 may transmit, for example, the data address of the determined image data on the graphic RAM 644 as control information to the display driving circuit 640 through a low-speed serial interface. The display driving circuit 640 may output an image corresponding to the touch gesture information to the display panel 610 according to the control information.

Figure 7 is a block diagram of a display driving circuit according to an embodiment of the present invention.

As shown in FIG. 7, the display driving circuit 740 (display driving IC) includes a graphic RAM 744 (GRAM), a control module 742 (controller), an interface module 741 (I/F), and an image Processing unit 743 (image processing unit), multiplexing module 745 (MUX), timing controller 746 (display timing controller), source driver 747 (source driver), and gate driver 748 (gate driver) may include.

Although not shown, according to various embodiments, the display driving circuit 740 may additionally include an oscillator, a frame number (or frame frequency) adjustment module, a pixel power application module, etc. Additionally, according to various embodiments, the source driver 747 and the gate driver 748 may not be included in the display driving circuit 740 and may be implemented as coupled to the display panel 710.

The graphic RAM 744 may store image data received from a processor (eg, the first processor 520 in FIG. 5) through the interface module 741. The graphics RAM 744 may include a memory space corresponding to the resolution and/or number of color gradations of the display panel 710.

The control module 742 may select some of the image data stored in the graphic RAM 744 and control the timing controller 746 so that the selected portion is output to a designated area of the display panel 710. The control module 742 may be referred to as control logic. Additionally, the control module 742 may be implemented with an embedded circuit (so-called self-display generator) that performs the display driving method of the present invention.

The interface module 741 may receive image data and/or control information from the outside. The interface module 741 includes an Rx-side high-speed serial interface (HiSSI) capable of receiving image data, an Rx-side low-speed serial interface capable of receiving control information, and an interface that controls the Rx-side high-speed serial interface and the Rx-side low-speed serial interface. Can contain controllers.

The image processing unit 743 can improve the quality of image data. Although not shown, the image processing unit 743 may include a pixel data processing circuit, a pre-processing circuit, and a gating circuit.

The multiplexer 745 may multiplex the signals output from the image processing unit 743 and the signals output from the control module 742 and transmit them to the timing controller 746.

The timing controller 746 receives image data multiplexed by the multiplexer 745 under the control of the control module 742, and provides a data control signal for controlling the operation timing of the source driver 747 and a gate driver ( 748) can generate a gate control signal to control the operation timing. According to one embodiment, the timing controller 746 may be implemented by being included in the control module 742.

The source driver 747 and gate driver 748 generate scan lines and data (not shown) of the display panel 710 based on the source control signal and gate control signal received from the timing controller 746, respectively. A signal supplied to a data line can be generated.

Figure 8 is a block diagram of a display driving circuit according to another embodiment of the present invention.

As shown in FIG. 8 , the electronic device 800 according to an embodiment of the present invention may include a display driving circuit 840, a display 810, and a processor 820.

The display may include a source driver 847, a gate driver 848, and a display panel 810. The display driving circuit 840 includes a graphics RAM 844, a control module 842, an interface module 841, an image processing unit 843, a decoder 849a, an upscaler 849b, and a timing controller 846. It can be included. Additionally, the processor 820 may include a display controller 822, an encoder 824, and a Tx-side high-speed serial interface.

The processor 820 may be the first processor 820 of FIG. 5 . The display controller 822 of the processor 820 may generate image data. For example, image data generated by the processor 820 may include a watch image and may be an image generated by a watch application.

The encoder 824 may encode image data generated by the display controller 822 in a designated method (e.g., DSC method specified by VESA). Through this, the image data generated by the display controller 822 can be compressed and the data size can be reduced.

The processor 820 may transmit image data encoded by the encoder 824 to the display driving circuit 840 through a Tx-side high-speed serial interface. Additionally, the processor 820 may transmit control information for selecting or controlling an image to be output on the display panel 810 to the display driving circuit 840 through a Tx-side low-speed serial interface (not shown).

The display driving circuit 840 may receive encoded image data and control information from the processor 820 through the interface module 841. For example, the encoded image data may be received through an Rx-side high-speed serial interface (HiSSI) under the control of an interface controller, and control information may be received through an Rx-side low-speed serial interface (LoSSI) under the control of an interface controller. You can.

The graphics RAM 844 may store at least one piece of encoded image data received through the Rx-side high-speed serial interface. According to one embodiment, the graphic RAM 844 may store a background image, an hour hand image, a minute hand image, and a second hand image constituting a clock image, and a plurality of each image may be stored according to time information. For example, the second hand image may store 60 (or more) images corresponding to 0 to 59 seconds.

The control module 842 may select some of the image data stored in the graphic RAM 844 to be output.

The interface module 841 may receive image data and control information from the processor 820. The interface module 841 includes an Rx-side high-speed serial interface (HiSSI) capable of receiving image data, an Rx-side low-speed serial interface (LoSSI) capable of receiving control information, an Rx-side high-speed serial interface, and an Rx-side low-speed serial interface. It may include an interface controller that controls.

The image processing unit 843 can improve the quality of image data. The image processing unit 843 may include a pixel data processing circuit, a pre-processing circuit, and a gating circuit.

If part of the image data selected by the control module 842 is encoded, the decoder 849a may decode the selected part in a designated manner and transmit the decoded data to the timing controller 846.

According to one embodiment, an upscaler 849b and/or an image processing unit 843 may be disposed between the decoder 849a and the timing controller 846. According to various embodiments, if the part selected by the control module 842 is not encoded, the decoder 849a may be omitted or bypassed.

The upscaler 849b can enlarge the image at a specified magnification. According to one embodiment, the upscaler 849b may enlarge the selected part by the control module 842 if the part is a low-resolution image or needs to be enlarged according to user settings.

Image data enlarged by the upscaler 849b may be transmitted to the timing controller 846. At this time, an image processing unit 843 may be placed between the upscaler 849b and the timing controller 846. According to various embodiments, if some of the image data selected by the control module 842 does not require enlargement, the upscaler 849b may be omitted or bypassed.

The timing controller 846 converts the image data received from the graphics RAM 844 into an image signal for display (e.g., source driver) through the decoder 849a, the upscaler 849b, and/or the image processing unit 843. (847) and gate driver (848)).

Figure 9 illustrates each clock image generated by an electronic device according to an embodiment of the present invention.

In FIG. 9, the images 912, 914, 916, and 918 displayed on the first line are images displayed on a display (e.g., the display 510 of FIG. 5) over time, and the images 932, 933 displayed on the second line. , 934, 935, 936, 938) are images generated by the first processor (e.g., the first processor 520 in FIG. 5), and the images (956, 958) displayed on the third line are images generated by the second processor (e.g., the first processor 520 in FIG. 5). It may be an image generated by the second processor 520 of FIG. 5.

When the electronic device is operating in wake-up mode (first mode), the first processor generates and outputs the first image 932, and the first image 932 generated by the first processor can be displayed on the display. There is (912). Here, the first image 932 may be a watch image created in a watch application.

If a predetermined event occurs while operating in wake-up mode, the electronic device may switch to sleep mode. Events that switch to sleep mode include, for example, receiving a specific key input, not detecting an input for more than a predetermined period of time, or reducing battery power below a threshold, but are not limited thereto.

In response to the input of the mode change signal, the first processor generates a first sub-image 933 including at least a portion of the first image 932 and a second sub-image 934 including at least another portion of the first image. can be created. As shown, the first sub-image 933 includes a background image of a clock image, and the second sub-image 934 includes an image related to time information corresponding to the current time (the timing at which the mode change signal was input) and Images related to minute information may be included. According to one embodiment, the first sub-image 933 may have a lower resolution than the background image of the first image 932 displayed in a wake-up state, or may be an image with some components of the first image 932 omitted. According to one embodiment, the second sub-image 934 is an image that reflects time information when a mode change signal is input and may not change over time. As shown, the image 935 that combines the first sub-image 933 and the second sub-image 934 may include a clock image background and hour/minute hands.

The second processor may receive a mode change signal from the first processor. The second processor can configure the second image 956 to be output through the AOD function when switching modes. To this end, the second processor may store a part of the clock image corresponding to the first image 932, that is, a background image, an hour hand image, a minute hand image, and a second hand image, in the graphic RAM provided inside, some of which include the time Depending on the information, multiple pieces may be stored. For example, the second processor stores 60 second hand images corresponding to 0 to 59 seconds, and can update and output the second hand images in 1-second increments.

According to one embodiment, the second processor may calculate the passage of time based on the current time. For example, when displaying the second image 956 to be output by the AOD function when switching from the wake-up state to the sleep state, the time information image (e.g., hour, minute, second image) stored in the graphic RAM is displayed as the time information. It can be displayed on the display according to the flow. For example, the second processor receives and stores an hour hand image, a minute hand image, and a second hand image from the first processor, and pre-stores the hour hand image and minute hand image based on the current time information calculated by the second processor itself in sleep mode. The image and second hand image can be modified and displayed on the display.

While the second processor configures the second image 956, it may take a time perceptible to the user (for example, 0.3 seconds). During this time, an image 935 combining the first sub-image 933 and the second sub-image 934 generated by the first processor may be displayed on the display (914). As shown at 914, the second hand may not be displayed on the display during that time.

The first processor and the second processor can display an image 916 that overlays the first sub-image 933, the second sub-image 934, and the second image 956 until the display is completely converted to sleep mode.

As shown, assuming that it takes a certain amount of time (e.g., 0.3 seconds) for the second processor to generate the second image 956 when the mode change signal is input, the second sub-image 934 displays the hour hand and Since it only includes the minute hand, the changes in the hour and minute hands for a certain period of time (e.g. 0.3 seconds) are at a subtle level. Therefore, even when displayed in combination with the second image 956 generated by the second processor, there may be only a subtle difference that the user cannot perceive.

According to another embodiment, the clock image may be an image in the form of a digital clock, and the second processor stores a part of the clock image corresponding to the first image 932 in the graphic RAM, that is, a background image, and hour/minute/second. You can save the number image corresponding to . A plurality of stored parts may be stored depending on time information, for example, from 0 to 59 seconds; Corresponding 60 numerical images can be stored.

When the transition to the sleep mode is completed, the first processor may remove the display of the second sub-image (eg, minute information and second information) 934. Afterwards, in the sleep mode, the first processor enters a dormant state, and the second processor can generate the second image 958 by the operation of the second processor itself and display it on the display. As shown, in sleep mode, the second processor may refer to the background image 938 generated by the first processor, combine the hour hand and minute hand images 958 in the graphics RAM, and display them on the display (918). .

Figure 10 shows the field image processing flow in the mode switching process, according to an embodiment of the present invention.

The first processor 1010 of the electronic device may configure a watch screen using the watch application 1020 in a wake-up state. The watch application 1020 may periodically update the watch image based on time information. The watch image 1030 configured by the watch application 1010 may include a background image and an hour/minute/second hand image, and the watch application 1010 may include some of the watch images to be displayed in the wake-up state and display in the sleep mode. At least part of the clock image to be displayed can be generated.

The AOD viewer 1040 may be an application or function that can be performed by the first processor 1010. According to one embodiment, the AOD viewer 1040 may be a software module for performing at least some of the operations of the first processor 520 of FIG. 5 described above, such as generating a first sub-image and a second sub-image. there is.

The AOD viewer 1040 can display the generated image on the top layer, no matter what application is currently running and displayed. When a clock image is created or changed in the clock application 1010, the AOD viewer (1040) selects the background image, hour information image, minute information image, and seconds of the clock image to be displayed with the AOD function in sleep mode from the created or changed clock image. At least one of the information images can be created and stored. For example, when a watch application changes the background image of the watch, it can create a background image to be displayed in sleep mode that corresponds to the changed background image.

When a predetermined event for changing to sleep mode is detected, the first processor 1010 operates the AOD viewer 1040, and the AOD viewer 1040 displays the background image of the clock image and the hour information image/minute information image ( For example, an hour/minute hand image) can be created. The AOD viewer 1040 can output a background image and an hour/minute hand image of a clock image generated at the top among a plurality of layers created by a plurality of applications. According to one embodiment, the AOD viewer 1040 may generate and store a background image and an hour/minute hand image at a predetermined period (eg, 1 minute). Accordingly, in the wake-up mode, no matter what screen is displayed on the display, when a mode change signal is input, the mode can be immediately switched to the background image and the hour/minute hand image generated by the AOD viewer 1040.

According to one embodiment, the AOD viewer 1040 may periodically change the position of the clock image displayed in sleep mode to minimize display burn-in. According to one embodiment, the AOD viewer 1040 changes the display driving circuit (e.g., the second processor 540 in FIG. 5 or the display driving circuit 640 in FIG. 6) and the display position on the AOD screen. By synchronizing the tables, the above-described first sub-image and second sub-image can be accurately displayed at the position displayed by the display driving circuit. The background image and the hour/minute hand images generated by the AOD viewer 1040 are removed when entering AOD, and from then on, the clock image generated by the second processor can be displayed on the display.

According to various embodiments of the present invention, an electronic device includes: a display; a first processor electrically connected to the display; It is electrically connected to the first processor and includes a second processor for driving the display, wherein the first processor generates and outputs a first image in a first mode, and the second processor switches modes. In response to the input of a signal, a second image corresponding at least in part to the first image is displayed on the display, and at least a part of the first image is displayed until the switch to the second mode according to the mode change signal is completed. A first sub-image including a second sub-image including at least another part of the first image and the second image may be overlaid and displayed on the display.

According to various embodiments, the first processor may be configured to remove the display of the second sub-image when the transition to the second mode is completed.

According to various embodiments, the first mode may be a wake-up mode, and the second mode may be a sleep mode.

According to various embodiments, when switching to the second mode, the first processor is set to enter an idle state, and the second processor displays the second image by the operation of the second processor itself. may be configured to generate and display on the display.

According to various embodiments, the first image is an image based on time information, the first sub-image includes a background image of the image based on the time information, and the second sub-image is based on the time information. The image based on the image may include an image related to hour information and an image related to minute information.

According to various embodiments, the second image is an image based on time information, and includes an image related to hour information, an image related to minute information, and a second image based on the time information. May include images related to information.

According to various embodiments, in the second mode, the second processor may be configured to select one of a plurality of images related to second information at a predetermined period and display it on the display.

According to various embodiments, the first processor encodes a plurality of images constituting the first image, and the second processor stores the encoded plurality of images and selects some of the encoded plurality of images. And, the selected part may be decoded and displayed on the display.

According to various embodiments, the second processor receives configuration information of the second image from the first processor periodically or when a predetermined event occurs, and generates the second image based on the configuration information. It may be configured to generate an image related to minute information and an image related to second information.

According to various embodiments, the second processor may be configured to synchronize the time information based on the received configuration information.

According to various embodiments, the second processor may be a display driving circuit (display driving IC).

11 is a flowchart of a method of driving a display of an electronic device according to various embodiments of the present invention.

The method shown in FIG. 11 can be performed by the electronic device previously described with reference to FIGS. 1 to 10, and hereinafter, description of the technical features described above will be omitted.

In operation 1110, the first processor may generate a first image in a first mode. Here, the first mode may be a wake-up mode, and the second mode switched from the first mode may be a sleep mode. The first image is a clock image and may include a background image, an hour hand image, a minute hand image, and a second hand image. According to another embodiment, the first image is a digital clock image and may display a background image and an image of hour/minute/second numbers.

In operation 1120, the first processor may receive a mode change signal.

In operation 1130, the first processor may generate a first sub-image including at least part of the first image and a second sub-image including at least another part of the first image in response to the input of the mode change signal. . Here, the first sub-image may include a background image of the clock image, and the second sub-image may include an hour hand image and a minute hand image of the clock image.

In operation 1140, the second processor may generate a second image that at least partially corresponds to the first image. Here, the second image is a watch image and may include an hour hand image, a minute hand image, and a second hand image of the watch image. According to one embodiment, operation 1130 and/or operation 1140 may be performed in advance before inputting the mode change signal. For example, the first processor may generate the first sub-image and the second sub-image periodically, such as when another watch application is executed to generate a watch image, or when the watch image used by the watch application is changed.

In operation 1150, the first sub-image, the second sub-image generated by the first processor, and the second image generated by the second processor may be overlaid and displayed on the display.

If the conversion to the second mode is completed in operation 1160, the first processor may remove the second sub-image in operation 1170. After this, the first processor enters an idle state, and the second processor can generate a second image and display it on the display through the operation of the second processor itself.

According to various embodiments of the present invention, a method of driving a display of an electronic device includes: generating and displaying a first image in a first mode by a first processor; An operation of a second processor displaying a second image corresponding at least in part to the first image on a display in response to an input of a mode change signal; and a first sub-image including at least part of the first image, a second sub-image including at least another part of the first image, and It may include an operation of overlaying and displaying the second image.

According to various embodiments, when the conversion to the second mode is completed, the operation of removing the display of the second sub-image may be further included.

According to various embodiments, the first mode may be a wake-up mode, and the second mode may be a sleep mode.

According to various embodiments, when switching to the second mode, the first processor enters an idle state, and the second processor generates the second image through the operation of the second processor itself. A display operation may be further included.

According to various embodiments, the first image is an image based on time information, the first sub-image includes a background image of the image based on the time information, and the second sub-image is based on the time information. The image based on the image may include an image related to hour information and an image related to minute information.

According to various embodiments, the second image is an image based on time information, and includes an image related to hour information, an image related to minute information, and a second image based on the time information. May include images related to information.

According to various embodiments, the operation of generating and displaying the second image in the second mode may include the operation of the second processor selecting and displaying one of the images related to a plurality of seconds information at a predetermined period. You can.

According to various embodiments, the second processor may receive composition information of the second image from the first processor periodically or when a predetermined event occurs; and generating an image related to minute information and an image related to second information of the second image based on the configuration information.

According to various embodiments, the operation of synchronizing the time information may be further included based on the received configuration information.

Claims (20)

In electronic devices,
display;
a first processor electrically connected to the display;
It is electrically connected to the first processor and includes a second processor for driving the display,
In the first mode,
The first processor generates a first image and outputs it through the display,
In response to input of a mode switching signal to the second mode,
The first processor generates a first sub-image including at least a part of the first image and a second sub-image including at least another part of the first image, and provides them to the display,
The second processor generates a second image that corresponds at least in part to the first image,
Overlaying the first sub-image, the second sub-image, and the second image on the display until the switch to the second mode is completed according to the mode change signal,
When the conversion to the second mode is completed,
The first processor enters a sleep state and stops generating the first sub-image and the second sub-image,
The second processor is configured to generate the second image through an operation of the second processor itself and display the second image on the display.
delete According to clause 1,
The first mode is a wake-up mode, and the second mode is a sleep mode.
delete According to clause 1,
The first image is an image based on time information, the first sub-image includes a background image of the image based on the time information, and the second sub-image is an image based on the time information. ) an electronic device containing images related to information and images related to minute information.
According to clause 5,
The second image is an image based on time information, and includes an image related to hour information, an image related to minute information, and an image related to second information of the image based on the time information. electronic device that does.
According to clause 6,
The second processor,
In the second mode, the electronic device is configured to select one of images related to a plurality of seconds information and display it on the display at every predetermined period.
According to clause 7,
The first processor encodes a plurality of images constituting the first image,
The second processor is configured to store the plurality of encoded images, select some of the plurality of encoded images, decode the selected parts, and display them on the display.
According to clause 5,
The second processor,
Receive configuration information of a second image from the first processor periodically or when a predetermined event occurs, and generate an image related to minute information and an image related to second information of the second image based on the configuration information. An electronic device configured to generate.
According to clause 9,
The second processor,
An electronic device configured to synchronize the time information based on the received configuration information.
According to clause 1,
The second processor,
An electronic device that is a display driving circuit (display driving IC).
In a method of driving a display of an electronic device,
An operation of a first processor generating and displaying a first image in a first mode;
In response to input of a mode change signal to the second mode, the first processor generates a first sub-image including at least a portion of the first image and a second sub-image including at least another portion of the first image. action that creates;
In response to a mode change signal to the second mode, the second processor generates a second image that at least partially corresponds to the first image;
An operation of overlaying and displaying the first sub-image, the second sub-image, and the second image until the conversion to the second mode is completed according to the mode change signal; and
When the conversion to the second mode is completed, generating and displaying the second image by the operation of the second processor itself,
When the conversion to the second mode is completed, the first processor enters a sleep state and stops generating the first sub-image and the second sub-image.
delete ◈Claim 14 was abandoned upon payment of the setup registration fee.◈ According to clause 12,
The first mode is a wake-up mode, and the second mode is a sleep mode.
delete ◈Claim 16 was abandoned upon payment of the setup registration fee.◈ According to clause 12,
The first image is an image based on time information, the first sub-image includes a background image of the image based on the time information, and the second sub-image is an image based on the time information. ) How to include images related to information and images related to minute information.
◈Claim 17 was abandoned upon payment of the setup registration fee.◈ According to clause 16,
The second image is an image based on time information, and includes an image related to hour information, an image related to minute information, and an image related to second information of the image based on the time information. How to.
◈Claim 18 was abandoned upon payment of the setup registration fee.◈ According to clause 17,
The method of generating and displaying the second image in the second mode includes the second processor selecting and displaying one of a plurality of images related to second information at a predetermined period.
◈Claim 19 was abandoned upon payment of the setup registration fee.◈ According to clause 16,
An operation of the second processor receiving configuration information of the second image from the first processor periodically or when a predetermined event occurs; and
A method comprising generating an image related to minute information and an image related to second information of the second image based on the configuration information.
◈Claim 20 was abandoned upon payment of the setup registration fee.◈ According to clause 19,
The method further includes synchronizing the time information based on the received configuration information.

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