CN113691271A

CN113691271A - Data transmission method and wearable device

Info

Publication number: CN113691271A
Application number: CN202110827557.2A
Authority: CN
Inventors: 靳百萍
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-11-23
Anticipated expiration: 2041-07-21
Also published as: CN115696522A; CN113691271B

Abstract

The application provides a data transmission method and wearable equipment, after the processing module can generate the data of display content, just can begin to send data to the display module at any moment, the display module that makes is deposited in the memory cell after receiving data, the display module uses control signal's rising edge as trigger condition, carry out self-refresh according to control signal's frequency, and the frequency that the processing module sent data, carry out self-refresh with the display module frequency unanimous or close, can be when preventing the tearing effect of display module display content, the processing module need not awaken up at every rising edge, can also reduce the number of times of awakening of processing module when not sending data and then reduce the consumption.

Description

Data transmission method and wearable device

Technical Field

The application relates to the technical field of electronics, in particular to a data transmission method and wearable equipment.

Background

Along with the continuous development of electronic technology, the function that wearable equipment such as intelligent wrist-watch can realize is more and more, display effect is also more and more abundant, for example, processing module in the intelligent wrist-watch can be used to generate the data of the image content of waiting to show to data transmission to the display module of image content shows image content on display panel by display module according to received data, makes the user can watch the image content that the intelligent wrist-watch provided through display panel.

In the prior art, in order to keep the processing module and the display module synchronized, the display module can generate a control signal and send the control signal to the processing module, so that the display module displays image content according to the rising edge of the control signal, and meanwhile, the processing module can also send data of the image content to the display module according to the rising edge of the control signal. And after finishing the data sending operation, the processing module can be switched to a dormant state and waits for the rising edge of the next control signal to be switched to an awakening state.

Adopt prior art, the processing module is not having under the condition that data need be sent, also all need switch into the awakening state after detecting every control signal's rising edge, has brought invalid power consumption, has reduced the holistic standby time of intelligent wrist-watch, influences intelligent wrist-watch's user experience.

Disclosure of Invention

The application provides a data transmission method and wearable equipment, which are used for solving the technical problem that a processing module of an intelligent watch is invalid to wake up on the rising edge of a control signal under the condition that no data needs to be sent, so that the standby time of the intelligent watch is prolonged, and the user experience is improved.

The application provides a data transmission method in a first aspect, which is applied to wearable equipment, wherein the wearable equipment comprises a processing module and a display module, and the method comprises the following steps: the processing module generates first data of first image content between a first moment and a second moment; the processing module sends first data to the display module between the second moment and the third moment, so that the display module stores the first data into the storage unit after receiving the data; the display module acquires second data from the storage unit between the fourth time and the fifth time, and displays image content corresponding to the second data on the display panel; and the first time interval between the second moment and the third moment is the same as the second time interval between the fourth moment and the fifth moment, or the difference between the first time interval and the second time interval is smaller than a preset threshold value.

In an embodiment of the first aspect of the present application, before the processing module generates the first data of the first image content, the processing module further includes: the processing module is switched from the dormant state to the awakening state.

In an embodiment of the first aspect of the present application, after the processing module sends the first data to the display module, the method further includes: the processing module is switched from the wake-up state to the sleep state.

In an embodiment of the first aspect of the present application, before the processing module acquires the second data from the storage unit, the processing module further includes: the display module detects a first rising edge of the control signal.

In an embodiment of the first aspect of the present application, the second time is a time between the fourth time and the fifth time; or the second time and the fourth time are the same time; alternatively, the second time is a time before a sixth time corresponding to a second rising edge after the first rising edge.

In an embodiment of the first aspect of the present application, the first frequency f1 corresponding to the first time interval is calculated by the following formula: f1 Width Height BitDepth/T/2; wherein, Width is the resolution of the display panel in the Width direction, Height is the resolution of the display panel in the Height direction, BitDepth is the display color depth of the display panel, and T is the second time interval.

In an embodiment of the first aspect of the present application, the method further includes: when the display module is switched from the screen-on state to the screen-on state, the display module calculates a first frequency f1 corresponding to the first time interval through a formula.

In an embodiment of the first aspect of the present application, the method further includes: when a target device in the wearable equipment is in a stop working state, the processing module sends first data to the display module between the second moment and the third moment; when the target device is in a working state, the processing module sends first data to the display module between the seventh time and the eighth time according to the detected rising edge of the control signal; and the time interval from the seventh time to the eighth time is smaller than the time interval from the second time to the third time.

In an embodiment of the first aspect of the present application, the method further includes: when a target application program in the wearable device is in a working stop state, the processing module sends first data to the display module between the second moment and the third moment; when the target application program is in a working state, the processing module sends first data to the display module between the seventh moment and the eighth moment according to the detected rising edge of the control signal; and the time interval from the seventh time to the eighth time is smaller than the time interval from the second time to the third time.

A second aspect of the present application provides a wearable device comprising: the processing module is used for generating first data of the first image content between the first time and the second time and sending the first data to the display module between the second time and the third time; the display module is used for storing the first data into the storage unit after receiving the first data; acquiring second data from the storage unit between the fourth time and the fifth time, and displaying image content corresponding to the second data on the display panel; and the first time interval between the second moment and the third moment is the same as the second time interval between the fourth moment and the fifth moment, or the difference between the first time interval and the second time interval is smaller than a preset threshold value.

A third aspect of the present application provides a terminal device, comprising: a processor and a memory; the memory stores computer-executable instructions; the processor executes computer-executable instructions stored by the memory to cause the processor to perform a data transfer method as in any one of the first aspects of the present application.

A fourth aspect of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the processor executes the computer-executable instructions, the data transmission method according to any one of the first aspect of the present application is implemented.

A fifth aspect of the application provides a computer program product comprising a computer program which, when executed by a processor, implements a data transmission method as in any one of the first aspects of the application.

To sum up, according to the data transmission method and the wearable device provided by the embodiment of the application, after the processing module can generate data of display content, the processing module can start to send data to the display module at any time, so that the display module is stored in the storage unit after receiving the data, the display module performs self-refreshing according to the frequency of the control signal by taking the rising edge of the control signal as a trigger condition, and the frequency of sending the data by the processing module is consistent with or close to the frequency of performing self-refreshing by the display module, so that the data sent by the processing module and the self-refreshing by the display module are independent from each other, although the data in the same position are read and written, the frequencies of the data are consistent or close to each other, even if the two processes are synchronous, the read data completely belong to the data before updating, and the data read by the display module are completely belong to the data before updating due to the deviation of the front and back sequence when the data are read according to the control signal, Or the data is completely updated, so that the tearing effect of the display content of the display module can be prevented. Simultaneously, because this application processing module need not be according to control signal's rising edge sending data, also need not just awaken up at every rising edge, can also reduce the number of times of awakening up of processing module when not sending data and then reduce the consumption.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 shows a schematic structural diagram of an electronic device;

FIG. 2 is a schematic diagram of an application scenario of the present application;

fig. 3 is a schematic structural diagram of a smart watch provided in the present application;

fig. 4 is a schematic view illustrating a display module according to the present disclosure when displaying image content;

FIG. 5 is a timing diagram illustrating self-refresh of a display module according to the present disclosure;

FIG. 6 is a schematic diagram illustrating a tearing effect of a display module;

FIG. 7 is a timing diagram illustrating the processing of data by the processing module and the display module according to the control signal;

FIG. 8 is a diagram illustrating a comparison between data stored in the GRAM and content displayed on the display panel;

FIG. 9 is a schematic diagram of a sleep timing sequence of a processing module;

fig. 10 is a schematic flowchart of an embodiment of a data transmission method provided in the present application;

fig. 11 is a timing diagram illustrating a data transmission method according to an embodiment of the present disclosure;

FIG. 12 is a diagram illustrating a comparison between data stored in another GRAM and content displayed on a display panel;

fig. 13 is a timing diagram illustrating another embodiment of a data transmission method according to the present application.

Detailed Description

Fig. 1 shows a schematic structural diagram of an electronic device.

The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a Universal Serial Bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a key 190, a motor 191, an indicator 192, a camera 193, a display screen 194, a Subscriber Identification Module (SIM) card interface 195, and the like. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

It is to be understood that the illustrated structure of the embodiment of the present invention does not specifically limit the electronic device 100. In other embodiments of the present application, electronic device 100 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 110 may include one or more processing units, such as: the processor 110 may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), etc. The different processing units may be separate devices or may be integrated into one or more processors.

The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution.

A memory may also be provided in processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 110. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Avoiding repeated accesses reduces the latency of the processor 110, thereby increasing the efficiency of the system.

In some embodiments, processor 110 may include one or more interfaces. The interface may include an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a Universal Serial Bus (USB) interface, etc.

The I2C interface is a bi-directional synchronous serial bus that includes a serial data line (SDA) and a Serial Clock Line (SCL). In some embodiments, processor 110 may include multiple sets of I2C buses. The processor 110 may be coupled to the touch sensor 180K, the charger, the flash, the camera 193, etc. through different I2C bus interfaces, respectively. For example: the processor 110 may be coupled to the touch sensor 180K via an I2C interface, such that the processor 110 and the touch sensor 180K communicate via an I2C bus interface to implement the touch functionality of the electronic device 100.

The I2S interface may be used for audio communication. In some embodiments, processor 110 may include multiple sets of I2S buses. The processor 110 may be coupled to the audio module 170 via an I2S bus to enable communication between the processor 110 and the audio module 170. In some embodiments, the audio module 170 may communicate audio signals to the wireless communication module 160 via the I2S interface, enabling answering of calls via a bluetooth headset.

The PCM interface may also be used for audio communication, sampling, quantizing and encoding analog signals. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled by a PCM bus interface. In some embodiments, the audio module 170 may also transmit audio signals to the wireless communication module 160 through the PCM interface, so as to implement a function of answering a call through a bluetooth headset. Both the I2S interface and the PCM interface may be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communications. The bus may be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is generally used to connect the processor 110 with the wireless communication module 160. For example: the processor 110 communicates with a bluetooth module in the wireless communication module 160 through a UART interface to implement a bluetooth function. In some embodiments, the audio module 170 may transmit the audio signal to the wireless communication module 160 through a UART interface, so as to realize the function of playing music through a bluetooth headset.

MIPI interfaces may be used to connect processor 110 with peripheral devices such as display screen 194, camera 193, and the like. The MIPI interface includes a Camera Serial Interface (CSI), a Display Serial Interface (DSI), and the like. In some embodiments, processor 110 and camera 193 communicate through a CSI interface to implement the capture functionality of electronic device 100. The processor 110 and the display screen 194 communicate through the DSI interface to implement the display function of the electronic device 100.

The GPIO interface may be configured by software. The GPIO interface may be configured as a control signal and may also be configured as a data signal. In some embodiments, a GPIO interface may be used to connect the processor 110 with the camera 193, the display 194, the wireless communication module 160, the audio module 170, the sensor module 180, and the like. The GPIO interface may also be configured as an I2C interface, an I2S interface, a UART interface, a MIPI interface, and the like.

The USB interface 130 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 130 may be used to connect a charger to charge the electronic device 100, and may also be used to transmit data between the electronic device 100 and a peripheral device. And the earphone can also be used for connecting an earphone and playing audio through the earphone. The interface may also be used to connect other electronic devices, such as AR devices and the like.

It should be understood that the connection relationship between the modules according to the embodiment of the present invention is only illustrative, and is not limited to the structure of the electronic device 100. In other embodiments of the present application, the electronic device 100 may also adopt different interface connection manners or a combination of multiple interface connection manners in the above embodiments.

The charging management module 140 is configured to receive charging input from a charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive charging input from a wired charger via the USB interface 130. In some wireless charging embodiments, the charging management module 140 may receive a wireless charging input through a wireless charging coil of the electronic device 100. The charging management module 140 may also supply power to the electronic device through the power management module 141 while charging the battery 142.

The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140, and supplies power to the processor 110, the internal memory 121, the display 194, the camera 193, the wireless communication module 160, and the like. The power management module 141 may also be used to monitor parameters such as battery capacity, battery cycle count, battery state of health (leakage, impedance), etc. In some other embodiments, the power management module 141 may also be disposed in the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may be disposed in the same device.

The wireless communication function of the electronic device 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the electronic device 100 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution including 2G/3G/4G/5G wireless communication applied to the electronic device 100. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module 150 may receive the electromagnetic wave from the antenna 1, filter, amplify, etc. the received electromagnetic wave, and transmit the electromagnetic wave to the modem processor for demodulation. The mobile communication module 150 may also amplify the signal modulated by the modem processor, and convert the signal into electromagnetic wave through the antenna 1 to radiate the electromagnetic wave. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the same device as at least some of the modules of the processor 110.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then passes the demodulated low frequency baseband signal to a baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs a sound signal through an audio device (not limited to the speaker 170A, the receiver 170B, etc.) or displays an image or video through the display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional modules, independent of the processor 110.

The wireless communication module 160 may provide a solution for wireless communication applied to the electronic device 100, including Wireless Local Area Networks (WLANs) (e.g., wireless fidelity (Wi-Fi) networks), bluetooth (bluetooth, BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), Infrared (IR), and the like. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, performs frequency modulation and filtering processing on electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, perform frequency modulation and amplification on the signal, and convert the signal into electromagnetic waves through the antenna 2 to radiate the electromagnetic waves.

In some embodiments, antenna 1 of electronic device 100 is coupled to mobile communication module 150 and antenna 2 is coupled to wireless communication module 160 so that electronic device 100 can communicate with networks and other devices through wireless communication techniques. The wireless communication technology may include global system for mobile communications (GSM), General Packet Radio Service (GPRS), code division multiple access (code division multiple access, CDMA), Wideband Code Division Multiple Access (WCDMA), time-division code division multiple access (time-division code division multiple access, TD-SCDMA), Long Term Evolution (LTE), LTE, BT, GNSS, WLAN, NFC, FM, and/or IR technologies, etc. The GNSS may include a Global Positioning System (GPS), a global navigation satellite system (GLONASS), a beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), and/or a Satellite Based Augmentation System (SBAS).

The electronic device 100 implements display functions via the GPU, the display screen 194, and the application processor. The GPU is a microprocessor for image processing, and is connected to the display screen 194 and an application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 194 is used to display images, video, and the like. The display screen 194 includes a display panel. The display panel may adopt a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED), a flexible light-emitting diode (FLED), a miniature, a Micro-oeld, a quantum dot light-emitting diode (QLED), and the like. In some embodiments, the electronic device 100 may include 1 or N display screens 194, with N being a positive integer greater than 1.

The electronic device 100 may implement a shooting function through the ISP, the camera 193, the video codec, the GPU, the display 194, the application processor, and the like.

The ISP is used to process the data fed back by the camera 193. For example, when a photo is taken, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing and converting into an image visible to naked eyes. The ISP can also carry out algorithm optimization on the noise, brightness and skin color of the image. The ISP can also optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in camera 193.

The camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image to the photosensitive element. The photosensitive element may be a Charge Coupled Device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The light sensing element converts the optical signal into an electrical signal, which is then passed to the ISP where it is converted into a digital image signal. And the ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into image signal in standard RGB, YUV and other formats. In some embodiments, the electronic device 100 may include 1 or N cameras 193, N being a positive integer greater than 1.

The digital signal processor is used for processing digital signals, and can process digital image signals and other digital signals. For example, when the electronic device 100 selects a frequency bin, the digital signal processor is used to perform fourier transform or the like on the frequency bin energy.

Video codecs are used to compress or decompress digital video. The electronic device 100 may support one or more video codecs. In this way, the electronic device 100 may play or record video in a variety of encoding formats, such as: moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, and the like.

The NPU is a neural-network (NN) computing processor that processes input information quickly by using a biological neural network structure, for example, by using a transfer mode between neurons of a human brain, and can also learn by itself continuously. Applications such as intelligent recognition of the electronic device 100 can be realized through the NPU, for example: image recognition, face recognition, speech recognition, text understanding, and the like.

The external memory interface 120 may be used to connect an external memory card, such as a Micro SD card, to extend the memory capability of the electronic device 100. The external memory card communicates with the processor 110 through the external memory interface 120 to implement a data storage function. For example, files such as music, video, etc. are saved in an external memory card.

The internal memory 121 may be used to store computer-executable program code, which includes instructions. The internal memory 121 may include a program storage area and a data storage area. The storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. The storage data area may store data (such as audio data, phone book, etc.) created during use of the electronic device 100, and the like. In addition, the internal memory 121 may include a high-speed random access memory, and may further include a nonvolatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (UFS), and the like. The processor 110 executes various functional applications of the electronic device 100 and data processing by executing instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor.

The electronic device 100 may implement audio functions via the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the headphone interface 170D, and the application processor. Such as music playing, recording, etc.

The audio module 170 is used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal. The audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be disposed in the processor 110, or some functional modules of the audio module 170 may be disposed in the processor 110.

The speaker 170A, also called a "horn", is used to convert the audio electrical signal into an acoustic signal. The electronic apparatus 100 can listen to music through the speaker 170A or listen to a handsfree call.

The receiver 170B, also called "earpiece", is used to convert the electrical audio signal into an acoustic signal. When the electronic apparatus 100 receives a call or voice information, it can receive voice by placing the receiver 170B close to the ear of the person.

The microphone 170C, also referred to as a "microphone," is used to convert sound signals into electrical signals. When making a call or transmitting voice information, the user can input a voice signal to the microphone 170C by speaking the user's mouth near the microphone 170C. The electronic device 100 may be provided with at least one microphone 170C. In other embodiments, the electronic device 100 may be provided with two microphones 170C to achieve a noise reduction function in addition to collecting sound signals. In other embodiments, the electronic device 100 may further include three, four or more microphones 170C to collect sound signals, reduce noise, identify sound sources, perform directional recording, and so on.

The headphone interface 170D is used to connect a wired headphone. The headset interface 170D may be the USB interface 130, or may be a 3.5mm open mobile electronic device platform (OMTP) standard interface, a cellular telecommunications industry association (cellular telecommunications industry association of the USA, CTIA) standard interface.

The pressure sensor 180A is used for sensing a pressure signal, and converting the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A may be disposed on the display screen 194. Pressure sensor 180A

Such as resistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, etc. The capacitive pressure sensor may be a sensor comprising at least two parallel plates having an electrically conductive material. When a force acts on the pressure sensor 180A, the capacitance between the electrodes changes. The electronic device 100 determines the strength of the pressure from the change in capacitance. When a touch operation is applied to the display screen 194, the electronic apparatus 100 detects the intensity of the touch operation according to the pressure sensor 180A. The electronic apparatus 100 may also calculate the touched position from the detection signal of the pressure sensor 180A. In some embodiments, the touch operations that are applied to the same touch position but different touch operation intensities may correspond to different operation instructions. For example: and when the touch operation with the touch operation intensity smaller than the first pressure threshold value acts on the short message application icon, executing an instruction for viewing the short message. And when the touch operation with the touch operation intensity larger than or equal to the first pressure threshold value acts on the short message application icon, executing an instruction of newly building the short message.

The gyro sensor 180B may be used to determine the motion attitude of the electronic device 100. In some embodiments, the angular velocity of electronic device 100 about three axes (i.e., the x, y, and z axes) may be determined by gyroscope sensor 180B. The gyro sensor 180B may be used for photographing anti-shake. For example, when the shutter is pressed, the gyro sensor 180B detects a shake angle of the electronic device 100, calculates a distance to be compensated for by the lens module according to the shake angle, and allows the lens to counteract the shake of the electronic device 100 through a reverse movement, thereby achieving anti-shake. The gyroscope sensor 180B may also be used for navigation, somatosensory gaming scenes.

The air pressure sensor 180C is used to measure air pressure. In some embodiments, electronic device 100 calculates altitude, aiding in positioning and navigation, from barometric pressure values measured by barometric pressure sensor 180C.

The magnetic sensor 180D includes a hall sensor. The electronic device 100 may detect the opening and closing of the flip holster using the magnetic sensor 180D. In some embodiments, when the electronic device 100 is a flip phone, the electronic device 100 may detect the opening and closing of the flip according to the magnetic sensor 180D. And then according to the opening and closing state of the leather sheath or the opening and closing state of the flip cover, the automatic unlocking of the flip cover is set.

The acceleration sensor 180E may detect the magnitude of acceleration of the electronic device 100 in various directions (typically three axes). The magnitude and direction of gravity can be detected when the electronic device 100 is stationary. The method can also be used for recognizing the posture of the electronic equipment, and is applied to horizontal and vertical screen switching, pedometers and other applications.

A distance sensor 180F for measuring a distance. The electronic device 100 may measure the distance by infrared or laser. In some embodiments, taking a picture of a scene, electronic device 100 may utilize range sensor 180F to range for fast focus.

The proximity light sensor 180G may include, for example, a Light Emitting Diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The electronic device 100 emits infrared light to the outside through the light emitting diode. The electronic device 100 detects infrared reflected light from nearby objects using a photodiode. When sufficient reflected light is detected, it can be determined that there is an object near the electronic device 100. When insufficient reflected light is detected, the electronic device 100 may determine that there are no objects near the electronic device 100. The electronic device 100 can utilize the proximity light sensor 180G to detect that the user holds the electronic device 100 close to the ear for talking, so as to automatically turn off the screen to achieve the purpose of saving power. The proximity light sensor 180G may also be used in a holster mode, a pocket mode automatically unlocks and locks the screen.

The ambient light sensor 180L is used to sense the ambient light level. Electronic device 100 may adaptively adjust the brightness of display screen 194 based on the perceived ambient light level. The ambient light sensor 180L may also be used to automatically adjust the white balance when taking a picture. The ambient light sensor 180L may also cooperate with the proximity light sensor 180G to detect whether the electronic device 100 is in a pocket to prevent accidental touches.

The fingerprint sensor 180H is used to collect a fingerprint. The electronic device 100 can utilize the collected fingerprint characteristics to unlock the fingerprint, access the application lock, photograph the fingerprint, answer an incoming call with the fingerprint, and so on.

The temperature sensor 180J is used to detect temperature. In some embodiments, electronic device 100 implements a temperature processing strategy using the temperature detected by temperature sensor 180J. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold, the electronic device 100 performs a reduction in performance of a processor located near the temperature sensor 180J, so as to reduce power consumption and implement thermal protection. In other embodiments, the electronic device 100 heats the battery 142 when the temperature is below another threshold to avoid the low temperature causing the electronic device 100 to shut down abnormally. In other embodiments, when the temperature is lower than a further threshold, the electronic device 100 performs boosting on the output voltage of the battery 142 to avoid abnormal shutdown due to low temperature.

The touch sensor 180K is also called a "touch device". The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, which is also called a "touch screen". The touch sensor 180K is used to detect a touch operation applied thereto or nearby. The touch sensor can communicate the detected touch operation to the application processor to determine the touch event type. Visual output associated with the touch operation may be provided through the display screen 194. In other embodiments, the touch sensor 180K may be disposed on a surface of the electronic device 100, different from the position of the display screen 194.

The bone conduction sensor 180M may acquire a vibration signal. In some embodiments, the bone conduction sensor 180M may acquire a vibration signal of the human vocal part vibrating the bone mass. The bone conduction sensor 180M may also contact the human pulse to receive the blood pressure pulsation signal. In some embodiments, the bone conduction sensor 180M may also be disposed in a headset, integrated into a bone conduction headset. The audio module 170 may analyze a voice signal based on the vibration signal of the bone mass vibrated by the sound part acquired by the bone conduction sensor 180M, so as to implement a voice function. The application processor can analyze heart rate information based on the blood pressure beating signal acquired by the bone conduction sensor 180M, so as to realize the heart rate detection function.

The keys 190 include a power-on key, a volume key, and the like. The keys 190 may be mechanical keys. Or may be touch keys. The electronic apparatus 100 may receive a key input, and generate a key signal input related to user setting and function control of the electronic apparatus 100.

The motor 191 may generate a vibration cue. The motor 191 may be used for incoming call vibration cues, as well as for touch vibration feedback. For example, touch operations applied to different applications (e.g., photographing, audio playing, etc.) may correspond to different vibration feedback effects. The motor 191 may also respond to different vibration feedback effects for touch operations applied to different areas of the display screen 194. Different application scenes (such as time reminding, receiving information, alarm clock, game and the like) can also correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

Indicator 192 may be an indicator light that may be used to indicate a state of charge, a change in charge, or a message, missed call, notification, etc.

The SIM card interface 195 is used to connect a SIM card. The SIM card can be brought into and out of contact with the electronic apparatus 100 by being inserted into the SIM card interface 195 or being pulled out of the SIM card interface 195. The electronic device 100 may support 1 or N SIM card interfaces, N being a positive integer greater than 1. The SIM card interface 195 may support a Nano SIM card, a Micro SIM card, a SIM card, etc. The same SIM card interface 195 can be inserted with multiple cards at the same time. The types of the plurality of cards may be the same or different. The SIM card interface 195 may also be compatible with different types of SIM cards. The SIM card interface 195 may also be compatible with external memory cards. The electronic device 100 interacts with the network through the SIM card to implement functions such as communication and data communication. In some embodiments, the electronic device 100 employs esims, namely: an embedded SIM card. The eSIM card can be embedded in the electronic device 100 and cannot be separated from the electronic device 100.

In some embodiments, the electronic device shown in fig. 1 may be a wearable device such as a smart watch having a display screen, for example, fig. 2 is a schematic diagram of an application scenario of the present application, and the present application is applied to a wearable device such as a smart watch having a display screen, as shown in fig. 2, the wearable device is a smart watch 10 as an example, wherein a processing module 102 in the smart watch 10 may be configured to generate image content to be displayed and send the image content to a display module 101, and the display module 101 displays the image content on the display panel, so that a user can view the image content provided by the smart watch 10 through the display panel. For example, in the example shown in fig. 2, the image content displayed on the display page of the smart watch 10 includes: time, date and background pattern, the background pattern may be, for example, two images of a person located in the upper part of the image content in fig. 2.

In some embodiments, fig. 3 is a schematic structural diagram of the smart watch provided in the present application, illustrating a connection relationship between the internal display module 101 and the processing module 102 of the smart watch 10 shown in fig. 2, and as shown in fig. 3, the processing module 102 specifically includes: the processor, the controller, the flash memory (flash), and the Random Access Memory (RAM) are all connected with the bus; the processor may be a processing device such as a CPU, GPU, MCU, etc., such as Cortex-M, and the controller may be a display controller (display controller), etc. The processing module 102 and the display module 101 are further connected by a Display Serial Interface (DSI), in some embodiments, a host (host) of the DSI may be set in the processing module 102 and connected to a bus in the processing module 102, and a slave (slave) of the DSI may be set in the display module 101, so that data transmission may be performed between the processing module 102 and the display module 101 through the DSI. The display module 101 further includes: a controller, a Graphics Random Access Memory (GRAM), and a display panel, and the controller may be a display controller (display controller). The GRAM is connected with the DSI slave terminal and the controller, and the controller is connected with the GRAM and the display panel. The display panel may be specifically an organic light-emitting diode (OLED).

In some embodiments, the processor in the processing module 102 may be configured to generate image content to be displayed and store data of the image content in a frame buffer (frame buffer) in the RAM, which may be referred to as "mapping". Subsequently, the controller in the processing module 102 may control the data of the image content stored in the frame buffer to be sent to the display module 101 through the DSI interface, and the display module 101 stores the data of the image content into the GRAM after receiving the data of the image content through the DSI interface, which may be referred to as "sending a map". Subsequently, the controller in the display module 101 reads the data of the image content in the GRAM, and displays the image content on the display panel, thereby realizing the processes of drawing, sending and displaying the whole image content.

More specifically, fig. 4 is a schematic diagram of a display module displaying image content according to the present application, wherein after the controller obtains data of the image content to be displayed from the GRAM, the display panel is controlled according to the data to display the image content, and the content displayed on the display panel is updated sequentially from top to bottom and from left to right as shown in fig. 4. For example, in the example shown in fig. 4, assuming that the image content to be displayed by the display panel 101 is a standby time page in the scene shown in fig. 2, the time required for refreshing the image content on the display panel once starts from time t100 and ends at time t200, wherein at time t101, the image content on the display panel is updated to a first portion, and only portions of two persons are displayed; at time t102, the image content on the display panel is updated to a second portion of the overall content, where another portion of the two people and a partial date are displayed; at time T103, the image content on the display panel is updated to the third part, and may display another part of the date and a part of the time, and at time T200, the image content is updated to the fourth part of the image content, and may display another part of the time, and finally the time when the display panel updates the whole image content is T1-T100. Although the display panel does not display the entire image content during the T1 time period, since the display process of the above-described T1 time period is repeated at a large refresh rate, the persistence of vision effect of the human eye can be utilized so that the human eye observes that the display panel displays the entire image content.

In some embodiments, the smart watch 10 needs to keep a normally bright state, and keep displaying the time shown in fig. 2 on its display panel for the user to view at any time, meanwhile, since the time in the image content shown in fig. 2 changes once every 1 second, the processing module 102 sends the data of the new image content to the display module 101 once every 1 second, and in this 1 second, in order to implement persistence of vision development of human eyes, the display module 101 needs to continuously obtain the data of the stored image content from its GRAM according to a certain frequency and display the data on the display panel, which may also be referred to as: self Refresh (PSR).

Fig. 5 is a timing diagram of the self-refresh of the display module according to the present application, wherein the display module 101 may be configured to generate a periodic control signal, and the control signal may specifically be a Terminating Effect (TE) signal, so that the controller can perform the self-refresh of the content of the display screen of the display panel under the trigger of the control signal. For example, in the example shown in fig. 5, the control signal generated by the display module 101 is a periodic square wave signal, the frequency f of the control signal is 60Hz, and the period T2 of the control signal is 16.7ms, i.e., the time length from one rising edge T1 to the next rising edge T2 of the control signal is T2. After detecting the rising edge of the control signal, the display module 101 obtains data of the image content from GRAM, and performs an update process of the image content as shown in fig. 4 according to the data. Illustratively, when the display module 101 detects a rising edge at time T1 of the control signal, after a certain time delay (about 0.7ms), the data of the image content is obtained from the GRAM at time T21 after time T1 to perform the updating process shown in fig. 4, and the updating process is completed at subsequent time T22, the time length between time T21 and time T22 is equivalent to time T1 shown in fig. 4, the time T1 is usually a value slightly smaller than time T2, for example, time T1 may be set to be about 16 ms. By analogy, when the display module 101 detects the rising edge of the time of the control signal t2, the display module 101 acquires the data of the image content from the GRAM again, and performs the updating process of the image content on the display panel at the time t23 to t24 after the time t2, it can be understood that, within 1 second, the display module 101 detects 60 rising edges of the control signal, and repeats 60 times of acquiring the data from the GRAM and performing the updating of the image content on the display panel.

In some embodiments, since the display module 101 obtains data of image content from its GRAM, the processing module 102 will also store the image into the GRAM through the DSI interface after drawing new image content, and overwrite the image content previously stored in the GRAM. If the processing module 102 writes data into the GRAM while the display module 101 reads the data stored in the GRAM, the data acquired by the display module 101 may belong to two image contents, respectively, resulting in a "tearing effect".

For example, fig. 6 is a schematic diagram of the tearing effect of the display module, and with the time sequence shown in fig. 5 as a reference, assuming that the image content acquired by the display module 101 from the GRAM at time t1 is the data of the standby time page, and the standby time page is displayed in a refreshing manner on the display panel, the processing module 102 starts to update the data in the GRAM after time t1 and before time t2, and only completes updating the data in the first half of the GRAM at time t 2. Subsequently, when the display module 101 detects a rising edge at time t2 of the control signal, the data obtained from the GRAM, at this time, the display module 101 has obtained part of the data from the GRAM and has not been updated, so that the upper half of the image content read and displayed by the display module after time t2 is the content of the standby time page before updating and the lower half is the content of the dial after updating, tearing of the image content is formed, the display effect is greatly affected, and after time t3, the content obtained and displayed by the display panel 101 is also the updated dial because the processing module 102 has completed updating the data in the GRAM.

In order to prevent the tearing effect from occurring on the content displayed by the display module, the time for the display module 101 to read data from the GRAM and the time for the processing module 102 to write data into the GRAM need to be limited. In some embodiments, the processing module 102 and the display module 101 may use the rising edge of the control signal as a trigger to respectively complete the drawing process of the processing module 102 and the drawing process of the display module 101 between the two rising edges, so as to prevent the tearing effect from occurring in the display content.

For example, fig. 7 is a timing diagram illustrating the processing module and the display module processing data according to the control signal, wherein the control signal is a periodic square wave signal with a period T2, and after the display module 101 generates the control signal, the control signal is sent to the DSI host of the processing module 102 through the DSI slave, so that after the processing module 102 detects the rising edge of the control signal at time T1, after a certain time delay (about 0.2ms), the sending of new image content data to the GRAM of the display module 101 through the DSI interface is started at time T11, where the sent data may be drawn by the processor in the processing module 102 before time T11. Also at time t1, when the display module 101 detects a rising edge of the control signal, after a certain time delay (about 0.7ms), the acquisition of data of image content from GRAM is started at time t21, and t21 is later than t 11. Subsequently, at time T12, the processing module 102 finishes sending the data of the new image content to the GRAM, and the entire drawing sending time T3 of the processing module 102 is less than the drawing time of the display module 101 once, so that the display module 101 does not complete the updating of the image content displayed on the display panel until time T22 after time T12.

Specifically, fig. 8 is a schematic diagram illustrating a comparison between data stored in the GRAM and content displayed on the display panel, wherein, in the process shown in fig. 7, after the time t1 of the rising edge of the control signal, at the time t11, the processing module 102 is ready to start sending new image content to the GRAM, so that the image content stored by the GRAM at the time t11 is still a previous standby time page, the display module 101 does not read the data stored in the GRAM and refresh the display panel, and the display panel does not start refreshing, i.e., does not display content. At time t21, the processing module 102 has sent part of the new image content to the GRAM, and assuming that the new image content is a dial, the upper half of the image content stored in the GRAM is the content of the standby time page after updating, the lower half is the content of the dial after updating, and the display module 101 has also started to acquire data of the image content from the GRAM and update the data onto the display panel according to the rising edge at time t1 at time t21, so that the image content of the dial after updating starts to appear on the top of the display panel. At time t12, the processing module 102 has sent the content of all the dials to the GRAM of the display module 101, and has completed updating the data in the GRAM, so that the GRAM stores the data of the updated dial after time t12, at this time, the display module 101 continues to acquire the data of the image content from the GRAM and update the data onto the display panel, and the acquired image content is also the updated dial, so that the display module 101 updates the content of part of the dial at time t 12. At time t22, the display module 101 continues to display the contents of a portion of the dial.

Since the processing module 102 starts sending the updated image content to the GRAM earlier before the self-refresh action of the display module 101 in the whole processing process after the time T1, and the time T3 for the processing module 102 to update the image content is less than the time for the display module 101 to refresh the display panel, the data acquired by the display module from the GRAM after the time T21 all correspond to the updated image content of the display module 101, so as to avoid the tearing effect of the content displayed by the display panel in the scene shown in fig. 6.

In some embodiments, the image content displayed in the smart watch 10 is determined by the processing module 102, and the frequency of drawing and sending images to the display module 101 by the processing module 102 is different for different image contents, for example, when the image content is a standby time page, a dial page, or the like, the processing module 102 needs to update a part of the image content for representing a minute every 1 minute, so as to generate a new image content and send the new image content to the display module 101 for displaying; when the image content is measured heart rate, exercise page, etc., the processing module 102 needs to update the image content every 1 second, and sends the image content to the display module 101 for displaying. That is, although the timing chart shown in fig. 6 defines the time when the processing module 102 sends the data of the image content after each rising edge of the control signal, the processing module 102 will send the updated image content to the GRAM of the display module 101 for storage after the image content needs to be updated and the drawing is completed. Meanwhile, the display module 101 still obtains image data from GRAM and performs self-refresh after detecting the rising edge of the control signal each time.

Therefore, in some embodiments, the processing module 102 may switch to the sleep state to save power consumption when not sending data of image content to the display module 101. The sleep state may be referred to as deep sleep state, and the DSI interface of the processing module 102 may be in an ULPS (LP00) state, and the DPHY function is turned off; the state opposite to the sleep state may be referred to as a wake state, wakeup state, or the like, and at this time, the DSI interface of the processing module 102 may be in a stop state (LP11), and in some specific implementations, it takes about 1ms for the processing module 102 to switch from the sleep state to the wake state.

For example, fig. 9 is a schematic diagram of a sleep timing sequence of the processing module, wherein after the processing module 102 generates new image content, when detecting a rising edge of the control signal at time t1, the processing module 102 starts to transmit data of the image content to the display module 101 at time t11 after time t1 according to the timing sequence shown in fig. 7 to implement image transmission. After the sending of the map is completed, the processing module 102 may switch from the wake state back to the sleep state at time t12 to save power. When the processing module 102 detects a rising edge of the control signal at time t2, it needs to switch from the sleep state to the wake-up state and detect whether it needs to send a picture, and if it does not need to switch to the sleep state again to save power consumption until the next rising edge of the control signal.

However, in the above-mentioned sleep process, even if the processing module 102 does not need to send a picture, and there is no data to send to the display module 101, the processing module 102 also needs to switch to the wake-up state after detecting the rising edge of each control signal, and even though the processing module will switch back to the sleep state after determining that the picture is not needed to be sent, the frequent wake-up according to the control signals brings invalid power consumption, especially when the frequency of sending a picture by the processing module 102 is low, the frequent wake-up is needed many times between every two picture sending, the power consumption of the processing module 102 is increased seriously, the standby time of the whole smart watch 10 is reduced, and further the user experience is affected.

Therefore, an embodiment of the present application further provides another data transmission method applied to wearable devices such as the smart watch 10, where the processing module 102 sends data to the display module 101, and the data transmission method can prevent the tearing effect of the display content of the display module 101, and can reduce the number of awakening times of the processing module 102 when the data is not sent, thereby reducing power consumption. Specifically, the data transmission method provided in the embodiment of the present application may be applied to the smart watch 10 shown in fig. 2, and is executed by the processing module 102 and the display module 101 in the smart watch 10, where fig. 10 is a schematic flow diagram of an embodiment of the data transmission method provided in the present application, and the method shown in fig. 10 includes the following steps:

s101: the processing module 102 generates first data of a first image content to be displayed between a first time and a second time. Specifically, the processor in the processing module 102 may generate the first data, and store the generated first data in the RAM.

Fig. 11 is a timing diagram illustrating an embodiment of a data transmission method provided by the present application, and in the embodiment shown in fig. 11, it is noted that the processing module 102 determines that first data corresponding to first image content needs to be generated at a first time t30, switches from a sleep state to an awake state, and then between the first time t30 and a second time t31, a processor in the processing module 102 finishes drawing the first image content to be displayed, and stores the drawn first data of the first display content in the RAM.

S102: the processing module 102 sends the first data stored in the RAM to the display module 101 from the second time to the third time.

Accordingly, in S103, after receiving the first data of the first image content to be displayed sent by the processing module 102, the display module 101 stores the first data into the storage unit, where the storage unit may be a GRAM in the display module 101.

Specifically, in the present embodiment, the processing module 102 does not send the data stored in the RAM after detecting the rising edge of the control signal, but starts sending the data stored in the RAM to the display module 101 through S102 after the second time t31 when the processing module 102 generates the image content to be displayed in S101.

In some embodiments, the processing module 102 sends data through the DSI interface between the DSI host side and the DSI control side of the display module 101, and a period T3 of sending data by the processing module 102 is the same as a period T2 of the display module 101 obtaining data of image content from GRAM and updating the data to refresh display page on the display panel, for example, in the example shown in fig. 11, the processing module 102 sends the first data stored in the RAM to the display module 101 between a second time T31 and a third time T32, where a period T3 of a time interval between the second time T31 and the third time T32 is the same as a period T2 of the display module 101 refreshing the content of the display panel. That is, the frequency of sending data to the display module 101 through the DSI interface by the processing module 102 is the same as the self-refresh frequency of the display module 101, and the frequency of sending data by the processing module 102 can be set through the DSI frequency of the DSI interface. For example, assuming that the frequency of the self-refresh of the display module 101 is 60Hz, the DSI frequency of the DSI interface may be set to 60Hz, so that the time interval length T3 between the second time T31 and the third time T32 when the processing module 102 sends data is 16.7ms corresponding to the 60Hz frequency.

In some embodiments, after the processing module 102 completes the first data transmission at the third time t32, the state may be switched from the awake state to the sleep state. And switching to the awakening state until next time the data of the image content to be displayed needs to be generated, and repeatedly executing S101-S102.

S201: the display module 101 obtains data of image content from a storage unit and updates the data to the display panel to refresh a display page, the storage unit may be a GRAM in the display module 101, the data obtained by the display module 101 from the GRAM is recorded as second data, and the second data may be first data generated by the processing module 102 in S101 or data corresponding to other second image content generated by the processing module 102. After the display module 101 specifically receives the control signal and detects the rising edge of the control signal, the second data is acquired from the GRAM between the fourth time and the fifth time, and the display panel is refreshed, so that the image content corresponding to the second data is displayed on the display panel.

Specifically, the processing module 102 sends the first data of the image content to be displayed to the display module 101 in S101-S103 and stores the first data in the GRAM of the display module 101, and the processing module 102 obtains the second data from the GRAM and refreshes the display page in S201 are two independent processes, it can be seen that the processing module 102 sends the first data without waiting for the rising edge of the control signal, but sends the first data after generating the first data of the display image, and meanwhile, the display module 101 still needs to perform self-refresh according to the rising edge of the control signal. For example, in the example shown in fig. 11, it is assumed that the processing module 102 sends the first data to the display module 101 between the second time t31 and the third time t32, and at this time, for the display module 101, when the rising edge of the control signal is detected at the time t1, the self-refresh is performed between the fourth time t21 and the fifth time t22, and the second data is obtained from the GRAM and updated to the display panel to refresh the display page. At this time, a time interval T2 between the fourth time T21 and the fifth time T22 is the same as a time interval T3 between the second time T31 and the third time T32 at S102 when the processing module 102 transmits data to the display module 101. Subsequently, a rising edge of the control signal is detected at time t2, and self-refresh continues between time t23 and time t24, and so on. Or, in other embodiments, the difference between the time intervals of T2 and T3 is smaller than the preset threshold, for example, T2 may be 16.7ms, T3 may be 16.16ms, and the difference between the two is smaller than 1ms, which is only an example, and the specific value of the preset threshold is not limited in this application.

Fig. 12 is a diagram illustrating a comparison between data stored in the GRAM and content displayed on the display panel, showing the difference between the data stored in the GRAM and the data displayed on the display panel in the display module 101 at different times in the scenarios shown in fig. 10 and 11.

As shown in fig. 12, when the display module 101 detects a rising edge of the control signal at time t1, the self-refresh is started at time t21 after time t1, and since the processing module 102 does not send data to the display module 101 at time t21, the data of the complete standby time page is stored in the GRAM in the display module 101, the data of the standby time page is acquired from the GRAM by the display panel 101, and the display content is updated from the top of the display panel, for example, at time t21 in fig. 12, the upper half of the person appears on the top of the screen of the display panel.

At time t30, the processing module 102 switches from the sleep state to the wake state, starts to execute S101 to generate data of image content, and stores the generated data of image content into the RAM after drawing is completed at time t31, and similarly at time t31, the processing module 102 has also started to transmit the generated data of image content to the display module 101, and assuming that the image content generated by the processing module 102 between time t30 and time t31 is a dial, after time t31, the display module 101 has started to receive the data transmitted by the processing module 102 and performs refresh from the top into the GRAM, and it can be seen that a part of the dial of the updated data stored at time t31 of GRAM control is schematically drawn in fig. 12. Meanwhile, the display panel 101 still performs the operation of acquiring data from the GRAM and refreshing the display panel at time t31, and since the operation of reading the data in the GRAM by the display panel 101 is earlier than the operation of writing the data into the GRAM by the processing module 102 and the frequencies of the data and the data are consistent, even if the processing module 102 starts writing the data into the GRAM during the reading process of the display module 101, the data read by the display module 101 are all data belonging to the previous image content or the next image content. Then at time t31 shown in fig. 10, the self-refresh time of the display module 101 exceeds half of the total time, and at this time, the lower half of the person appears above the screen of the display panel, and since the upper half of the person has been read and displayed by the display module 101 before time t31, when the processing module 101 at time t31 is used to process new data written in the GRAM, the upper half of the person is covered, and the content of the person already displayed on the display panel is not affected.

At time t22, the display module 101 completes the self-refresh process according to the rising edge at time t1, and it can be seen in fig. 12 that the whole standby time page before GRAM update is displayed on the display panel. Meanwhile, at the time t22, the processing module 102 still continues to send the data of the new dial to the GRAM of the display module 101, so that the upper half of the GRAM is the updated dial page and the lower half is the standby time page before updating is schematically depicted in fig. 12. Since the display panel 101 has completed displaying, the torn data stored in the GRAM at time t22 will not actually be displayed on the display panel, so that the content displayed on the display panel 101 will not have a tearing effect.

Subsequently, when the display module 101 detects the rising edge of the control signal again at time t2, the self-refresh is started again at time t23 after time t2, and at time t23, the processing module 102 still continues to send data of a new dial to the GRAM of the display module 101, so that the upper most part of the GRAM is an updated dial page, and only the lower small half part of the GRAM is a standby time page before updating, at this time, the display module 101 starts to acquire data from the top of the GRAM and performs refresh on the display panel, and the acquired data corresponds to the updated dial page, so that the content of the top dial starts to appear above the screen on the display panel at time t 23.

At time t32, after the processing module 102 completes the operation of sending data to the display module 101, it may switch to the sleep state, where the GRAM includes the complete updated dial data, and at the same time, the display module 101 still continues to perform the self-refresh operation, and continues to display the partial content of the dial on the display panel at time t 32. Since the frequency of reading the data in the GRAM by the display panel 101 is consistent with the frequency of writing the data into the GRAM by the processing module 102, when the processing module 102 updates the lower half data of the GRAM into the dial data between the time t23 and the time t32, the reading and displaying of the updated dial data on the upper half by the display module 101 cannot be affected.

At time t24, the display module 101 completes the self-refresh process according to the rising edge at time t2, and it can be seen in fig. 12 that the page of the rearmost dial is displayed on the display panel. It can be seen that, with time t2 as a boundary, the standby time page is displayed on the display panel at time t21 to time t22 before time t2, the dial page is displayed on the display panel at time t23 to time t24 after time t2, and the display panel 101 displays complete pages before and after time t2, so that the displayed content does not have the tearing effect as shown in fig. 6.

In the embodiment of the present application, taking the processing module 102 starts to transmit data to the GRAM of the display module 101 at time t31 as an example, at this time, the second time t31 is between the fourth time t21 and the fifth time t22, and in the actual implementation process, the processing module 102 may start to transmit data to the display module 101 at any time when it is determined that data needs to be transmitted, without referring to the rising edge of the control signal, that is, the time when the processing module 102 transmits data and the time when the control signal rises are independent and independent of each other, for example, the second time t31 may be the same time as the fourth time t21, or the second time t31 may be the next rising edge after the first rising edge of the time t1, that is, the time before the sixth time t2 corresponding to the second rising edge.

In some embodiments, the DSI frequency used when the processing module 102 sends data in this application may be calculated by the processing module 102 or may be preset; but may also be sent by a system, application, or other device to the process module 102. For example, the present application further provides a method for calculating the time for sending data by the processing module 102 through a formula, that is, calculating the DSI frequency, which can be executed when the processing module 102 needs to obtain the DSI frequency, or the DSI frequency preset in the processing module 102 can also be calculated through the following formula. In some embodiments, when the display module 101 switches from the screen-on state to the screen-off state, the display module 101 may calculate the first frequency f1 corresponding to the first time interval T2 according to the following formula.

The method comprises the following specific steps: f1 is Width Height BitDepth/T2/2, where f1 is the DSI frequency of the display module, Width is the Width of the resolution of the display panel in pixels (pixel), Height is the Height of the resolution of the display panel in pixels (pixel), BitDepth is the display color depth of the display panel in bits/pixels (bit), and T2 is the time for the display module 101 to refresh once, and parameter 2 divided by Width Height BitDepth/T/2 in the formula indicates that the DSI interface transmits 2 bytes in 1 cycle. Exemplarily, assume that the screen display resolution of the display panel: 454, color depth: 24 bits/pixel, the frame buffer FrameBuffer is 454 × 24 ═ 4946784, the screen self-refresh period T2 is 0.016s, and the DSI frequency is calculated as 154587000Hz by the above formula. When the processor of the processing module 102 is of a model number STM32L4R9, etc., a frequency doubling parameter may be set for the DSI frequency, for example, the DSI frequency doubling parameter is 51, and then the DSI frequency may be calculated to be 153MHz, 306Mbps, and 16.16 ms/frame.

To sum up, the data transmission method provided in the embodiment of the present application, after the processing module of the smart watch generates data of display content, the processing module may start to send data to the display module at any time, the display module stores the data into the storage unit after receiving the data, the display module performs self-refresh according to the frequency of the control signal by using the rising edge of the control signal as a trigger condition, and the frequency of sending data by the processing module is consistent with the frequency of performing self-refresh by the display module, so that the self-refresh of the processing module and the self-refresh of the display module are independent from each other, although the data in the same position (GRAM) is read and written, since the frequencies of the two are consistent, even if the two processes are synchronous, the read data completely belongs to the data before update or after the data is completely updated due to the deviation of the front and back order, therefore, the tearing effect of the display module on the display content can be prevented. Simultaneously, because this application processing module need not be according to control signal's rising edge sending data, also need not just awaken up at every rising edge, can also reduce the number of times of awakening up of processing module when not sending data and then reduce the consumption.

In some embodiments, the DSI slave in the display module may not send a control signal to the processing module 102, so that signal interaction is further reduced, and power consumption is reduced.

In some embodiments, since different radio frequency devices such as Near Field Communication (NFC), Global Positioning System (GPS), Bluetooth (BT), etc. may exist on a wearable device such as the smart watch 10, when the distance between an antenna of the radio frequency device and the display module is close, if the operating frequency multiplication frequency of the radio frequency device is close to the DSI frequency, interference between the radio frequency devices may be generated, which affects the operating stability of the whole smart watch. For example, when the processing module 102 sends data to the display module 101, the NFC card may be opened, and the display panel may be shown to be blurred, and the GPS positioning satellite searching speed may be slowed down.

Therefore, when setting the DSI frequency in the embodiment of the present application, consideration is also needed to prevent interference with frequencies of other radio frequency devices. For example, after calculating the DSI CLD Freq, the DSI CLD Freq is used as the minimum value of the DSI frequency, and the minimum frequency is selected as the DSI frequency except the frequency multiplication frequency of different devices such as NFC/GPS/BT on the basis of the minimum value. Meanwhile, when the rf device operates, the processing module 102 sends data to the display module 101 according to the rising edge of the control signal.

For example, fig. 13 is a timing diagram of another embodiment of the data transmission method provided in the present application, in this case, the processing module 102 further needs to receive a control signal after determining the DSI frequency finally according to the above formula DSI CLD Freq as a minimum value of the DSI frequency, and send data according to a rising edge of the control signal, for example, after detecting the rising edge of the control signal at time t1, the processing module 102 starts sending data to the display module 101 at time t11 after time t1, and the display module 101 starts self-refreshing at time t21 after detecting the rising edge of the control signal at time t1, and the timing flow shown in fig. 13 is the same as that shown in fig. 7, and is not repeated.

In some embodiments, the processing module 102 may send the first data to the display module 101 in a manner as shown in fig. 11 when a target device, such as NFC/GPS/BT in the smart watch, which may generate radio frequency interference, is in an operating state, for example, the first data is sent to the display module between the second time t31 and the third time t 32. When none of the target devices is in the inactive state, the processing module 102 performs data transmission as shown in fig. 13, for example, transmits the first data to the display module 101 between a seventh time t11 and an eighth time t 12; the time interval from the seventh time t11 to the eighth time t12 is smaller than the time interval from the second time t31 to the third time t 32. Therefore, the power consumption can be reduced, and the problem of interference between data transmission and the radio frequency device can be prevented when the radio frequency device works.

In some embodiments, the processing module 102 may further perform data transmission according to the manners shown in fig. 11 or fig. 13 for different scenarios, for example, when a target application in the smart watch is started and the application has a higher refresh frequency, the processing module 102 sends the first data to the display module 101 according to the manner shown in fig. 11 to avoid interference, and when the target application is closed and the current system page refresh frequency is lower, the processing module 102 performs data transmission according to the manner shown in fig. 13 to reduce power consumption.

In some embodiments, the present application is directed to the smart watch 10 in a bright screen state, the processing module 102 needs to send data to the display module 101, and the display module 101 continuously performs data transmission during self-refresh, and when the smart watch 10 is in a rest screen state, the data transmission method in the present application may not be executed. Moreover, after the smart watch 10 is switched from the screen-off state to the screen-on state, the processing module 102 may first set the DSI frequency, and then execute the data transmission method according to the DSI frequency.

In the foregoing embodiments, the data transmission method provided in the embodiments of the present application is described, and in order to implement each function in the method provided in the embodiments of the present application, the wearable device as an execution subject may include a hardware structure and/or a software module, and implement each function in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution. For example, in fig. 3, the wearable device provided in the present application includes a processing module 102 and a display module 101, where steps and principles of a method specifically executed by the processing module and the display module may refer to relevant contents in the data transmission method described in the foregoing embodiment, and specific implementation manners and principles thereof are the same and are not described herein again.

It should be understood that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. The processing element may be a separate processing element, or may be integrated into a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and a processing element of the apparatus may call and execute the functions of the above determination module. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when some of the above modules are implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor that can call program code. As another example, these modules may be integrated together, implemented in the form of a system-on-a-chip (SOC).

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The present application further provides an electronic device comprising: a processor and a memory; the memory stores computer executable instructions, and when the processor executes the computer executable instructions, the processor can be used for executing the data transmission method in any one of the embodiments.

The present application also provides a computer-readable storage medium storing computer-executable instructions, which when executed, can be used to implement the data transmission method as in any one of the previous embodiments of the present application.

The embodiment of the present application further provides a chip for executing the instruction, where the chip is used to execute the data transmission method in any one of the foregoing embodiments of the present application.

Embodiments of the present application further provide a computer program product, where the computer program product includes a computer program, where the computer program is stored in a storage medium, and when the computer program is executed, the data transmission method in any of the foregoing embodiments of the present application may be implemented.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A data transmission method is applied to wearable equipment, the wearable equipment comprises a processing module and a display module, and the method comprises the following steps:

the processing module generates first data of first image content between a first moment and a second moment;

the processing module sends the first data to the display module between the second moment and a third moment, so that the display module stores the first data into a storage unit after receiving the data;

the display module acquires second data from the storage unit between a fourth moment and a fifth moment, and displays image content corresponding to the second data on a display panel; and a first time interval between the second moment and the third moment is the same as a second time interval between the fourth moment and the fifth moment, or the difference between the first time interval and the second time interval is smaller than a preset threshold value.

2. The method of claim 1, wherein before the processing module generates the first data for the first image content, further comprising: and the processing module is switched from the dormant state to the awakening state.

3. The method of claim 2, wherein after the processing module sends the first data to the display module, the method further comprises: and the processing module is switched from the awakening state to the dormant state.

4. The method according to any one of claims 1-3, wherein before the processing module retrieves the second data from the storage unit, the method further comprises:

the display module detects a first rising edge of the control signal.

5. The method according to any one of claims 1 to 4,

the second time is a time between the fourth time and the fifth time;

or the second time and the fourth time are the same time;

or, the second time is before a sixth time corresponding to a second rising edge after the first rising edge.

6. The method according to any one of claims 1 to 5, wherein the first frequency f1 corresponding to the first time interval is calculated by the following formula: f1 Width Height BitDepth/T/2;

wherein, Width is the resolution of the display panel in the Width direction, Height is the resolution of the display panel in the Height direction, BitDepth is the display color depth of the display panel, and T is the second time interval.

7. The method of claim 6, further comprising:

when the display module is switched from a screen-on state to a screen-on state, the display module calculates a first frequency f1 corresponding to the first time interval through a formula.

8. The method according to any one of claims 1-7, further comprising:

when a target device in the wearable equipment is in a stop working state, the processing module sends the first data to the display module between the second moment and a third moment;

when the target device is in a working state, the processing module sends the first data to the display module between the seventh time and the eighth time according to the detected rising edge of the control signal; and the time interval from the seventh time to the eighth time is smaller than the time interval from the second time to the third time.

9. The method according to any one of claims 1-7, further comprising:

when a target application program in the wearable device is in a working stop state, the processing module sends the first data to the display module between the second moment and a third moment;

when the target application program is in a working state, the processing module sends the first data to the display module between the seventh time and the eighth time according to the detected rising edge of the control signal; and the time interval from the seventh time to the eighth time is smaller than the time interval from the second time to the third time.

10. A wearable device, comprising:

the processing module is used for generating first data of first image content between a first moment and a second moment and sending the first data to the display module between the second moment and a third moment;

the display module is used for storing the first data into a storage unit after receiving the first data; acquiring second data from the storage unit between a fourth time and a fifth time, and displaying image content corresponding to the second data on a display panel; and a first time interval between the second moment and the third moment is the same as a second time interval between the fourth moment and the fifth moment, or the difference between the first time interval and the second time interval is smaller than a preset threshold value.