WO2021134397A1 - 用于无线传输图像的方法及装置、存储介质及电子设备 - Google Patents
用于无线传输图像的方法及装置、存储介质及电子设备 Download PDFInfo
- Publication number
- WO2021134397A1 WO2021134397A1 PCT/CN2019/130306 CN2019130306W WO2021134397A1 WO 2021134397 A1 WO2021134397 A1 WO 2021134397A1 CN 2019130306 W CN2019130306 W CN 2019130306W WO 2021134397 A1 WO2021134397 A1 WO 2021134397A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image transmission
- gui data
- processor
- application processor
- frame timing
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 225
- 238000000034 method Methods 0.000 title claims abstract description 64
- 230000015654 memory Effects 0.000 claims description 31
- 238000012545 processing Methods 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 abstract description 8
- 238000004891 communication Methods 0.000 description 10
- 230000006870 function Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
Definitions
- the present invention generally relates to the field of wireless image transmission technology, and more specifically to a method and device, storage medium and electronic equipment for wireless image transmission.
- the image transmission chip at the receiving end is responsible for receiving video and generating OSD (on-screen display) data.
- OSD on-screen display
- the video transmission chip needs to be controlled by the sub-frame level timing to synthesize the video and OSD, and send them directly to the screen for display.
- Such application scenarios usually require the display and operation of a graphical user interface.
- drawing a complex GUI usually requires more computing resources and 2D/3D drawing resources, which is often not enough for special-purpose image transmission chips. If the GUI is to be drawn on a dedicated image transmission chip, there are requirements on the resources and capabilities of the image transmission chip, which will increase the cost of the image transmission chip.
- the current common practice is that the image transmission chip sends the received image transmission data to the external application processor.
- the external application processor completes the drawing of the GUI and merges the layers and sends it to the monitor for display, but this method will increase The delay displayed by the image transmission cannot achieve a very good low-latency image transmission user experience.
- the present invention is proposed in order to solve at least one of the above-mentioned problems.
- the present invention provides a method and device, storage medium and electronic equipment for wireless image transmission.
- the GUI is drawn by an external application processor and then sent to the image transmission processor.
- the image transmission processor combines the GUI with other layers. Combined display, and design a mechanism to synchronize the timing of external input GUI with the frame timing displayed by the image transmission processor to reduce the delay of GUI display and reduce the DDR bandwidth occupation of the target chip.
- an embodiment of the present invention provides a method for wireless image transmission, which includes:
- the application processor and the image transmission processor are independent of each other and are connected through an interface.
- the embodiment of the present invention also provides an apparatus for wireless image transmission, which includes: an application processor and an image transmission processor,
- the application processor is used to generate GUI data, and send the GUI data to the image transmission processor;
- the image transmission processor is used to receive GUI data sent by the application processor and video and/or OSD data sent by other devices, and merge the received GUI data and video and/or OSD data to form display data ;
- the image transmission processor is also used to send the display data to a display for display,
- the application processor and the image transmission processor are independent of each other and are connected through an interface.
- the embodiment of the present invention also provides a storage medium on which a computer program is stored, and the computer program executes the method for wireless image transmission according to the present invention when the computer program is running.
- An embodiment of the present invention also provides an electronic device, which includes the device for wireless image transmission according to the present invention and a display, and the display is connected to the image transmission processor.
- the embodiment of the present invention provides a method and device for wireless image transmission, storage medium and electronic equipment. Since the GUI is drawn by the external application processor, the GUI data sent by the external application processor is combined with other The layers are combined and displayed. On the one hand, for the image transmission processor with limited 2D/3D drawing capabilities, the external application processor can draw a complex GUI to complete the wireless image transmission; on the other hand, because the image transmission processor is used There is no need to draw complex GUI capabilities and computing resources, thus reducing the computing and drawing resources required by the image transmission processor, and reducing the requirements and cost of the image transmission processor.
- FIG. 1 shows a schematic structural diagram of an exemplary electronic device for implementing a method and apparatus for wireless image transmission according to an embodiment of the present invention
- Fig. 2 shows a schematic flowchart of a method for wireless image transmission according to an embodiment of the present invention
- Fig. 3 shows a schematic flowchart of a method for realizing synchronization in wireless image transmission according to an embodiment of the present invention
- FIG. 4 shows a schematic flowchart of a method for realizing synchronization in wireless image transmission according to another embodiment of the present invention
- Fig. 5 shows a schematic block diagram of an apparatus for wireless image transmission according to an embodiment of the present invention
- Fig. 6 shows a schematic block diagram of an electronic device according to an embodiment of the present invention.
- the electronic device 100 includes one or more processors 102, one or more storage devices 104, an input/output device 106, and a communication interface 108. These components are connected through a bus system 110 and/or other forms of connection mechanisms. (Not shown) interconnected. It should be noted that the components and structure of the electronic device 100 shown in FIG. 1 are only exemplary and not restrictive. According to requirements, the electronic device may also have other components and structures, or may not include some of the aforementioned components.
- the processor 102 generally represents any type or form of processing unit capable of processing data or interpreting and executing instructions.
- the processor can be a central processing unit (CPU), an image processing unit (GPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), a digital signal processor (DSP) or has data processing capabilities And/or other forms of processing units with instruction execution capabilities, and can control other components in the electronic device 100 to perform desired functions.
- the processor 102 can include one or more embedded processors, processor cores, microprocessors, logic circuits, hardware finite state machines (FSM), digital signal processors (DSP), or combinations thereof.
- the processor 102 may receive instructions from software applications or modules. These instructions may cause the processor 102 to complete the method described and/or shown herein for hybrid navigation of a degree device and the self-moving device and method.
- the storage device 104 may include one or more computer program products, and the computer program products may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory.
- the volatile memory may include random access memory (RAM) and/or cache memory (cache), for example.
- the non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, and the like.
- One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 102 may run the program instructions to implement the client functions (implemented by the processor) in the embodiments of the present invention described below. And/or other desired functions.
- Various application programs and various data such as various data used and/or generated by the application program, can also be stored in the computer-readable storage medium.
- the input/output device 106 may be a device used by the user to input instructions and output various information to the outside.
- the input device may include one or more of a keyboard, a mouse, a microphone, and a touch screen.
- the output device may include one or more of a display, a speaker, and the like.
- the communication interface 108 broadly represents any type or form of adapter or communication device capable of facilitating communication between the example electronic device 100 and one or more additional devices.
- the communication interface 108 can facilitate communication between the electronic device 100 and a front-end or accessory electronic device, and a back-end server or cloud.
- Examples of the communication interface 108 include, but are not limited to, a wired network interface (such as a network interface card), a wireless network interface (such as a wireless network interface card), a modem, and any other suitable interface.
- the communication interface 108 provides a direct connection to a remote server/remote head-end device through a direct connection to a network such as the Internet.
- the communication interface 108 provides a direct connection to a remote server/remote front-end device through a direct connection to a network such as a private network.
- the communication interface 108 may also indirectly provide such a connection through any other suitable connection.
- the exemplary electronic device used to implement the method and apparatus for wireless image transmission may be implemented as a smart phone, a tablet, a PDA, a remote control, a computer, and other devices.
- Fig. 2 shows a schematic flowchart of a method for wireless image transmission according to an embodiment of the present invention. The method for wireless image transmission provided by an embodiment of the present invention will be described in detail below with reference to FIG. 2.
- the method for wireless image transmission disclosed in this embodiment is applied to the receiving end of wireless image transmission.
- the receiving end device has an application processor (AP) and an image transmission processor, and the application processor has strong 2D/3D Processing ability, can draw complex GUI (graphical user interface), image transmission processor has certain image processing capabilities, image transmission processor can receive the image sent by the transmitter, for example, receive the image sent by the transmitter through wireless transmission methods such as WIFI, Wireless transmission chips such as WIFI can be integrated in the image transmission processor, or can be separately configured for the receiving end.
- the application processor and the image transmission processor are independent of each other and are connected through an interface. That is, the application processor and the image transmission processor receiving end device are two independent pieces of hardware, and the interface is, for example, a MIPI (Mobile Industry Processor Interface, MIPI for short) interface.
- MIPI Mobile Industry Processor Interface
- the method for wireless image transmission includes:
- Step S101 Use the application processor to generate GUI data, and send the GUI data to the image transmission processor through the application processor.
- the required GUI is drawn through the application processor of the image receiving end device, and the drawn GUI is sent to the image transmission processor.
- the GUI data is stored in the buffer of the application processor.
- the buffer is a continuous buffer (buffer) of a memory connected to the application processor.
- it may be a part of a DDR of an external memory, for example.
- the buffer is integrated in an application processor, such as a static RAM of the application processor.
- the GUI data is in the ARGB format, that is, the application processor finishes drawing the required GUI, and after generating the GUI data, the GUI data is stored in the ARGB format to the application processor In the buffer.
- the application processor sends the GUI data in the buffer to the image transmission processor in the RGB888 format through the interface.
- the application processor outputs GUI data in its own buffer in the format of RGB888 as display data through the interface, such as MIPI output interface (MIPI DSI out), and transmits it to the image transmission processing. Device.
- MIPI output interface MIPI DSI out
- the ARGB format is 4 bytes per pixel
- the RGB888 format is 3 bytes per pixel
- the size of the GUI data is m pixels * n pixels, where m and n are positive integers, in order to ARGB format storage, and output in the format of RGB888, then m or n needs to be divisible by 3.
- m can be divisible by 3, so the output of GUI data is performed according to the size of (m*4/3)*n.
- GUI data is exemplary, and in other embodiments, other formats may also be used as needed, and are not limited to the ARGB format and the RGB888 format.
- Step S102 using the image transmission processor to receive video and/or OSD data.
- the video and/or OSD data sent by the transmitting terminal is received by the image transmission processor, for example, the video and/or OSD data sent by the transmitting terminal is received through WIFI.
- the transmitting end is, for example, an unmanned aerial vehicle
- the receiving end is, for example, a smart phone or a remote controller.
- Step S103 using the image transmission processor to merge the received GUI data and the video and/or OSD data to form display data.
- the image transmission processor receives the GUI data of the application processor through the interface, such as the MIPI input interface (MIPI DSI in).
- the image transmission processor receives the GUI data in the RGB888 format, and stores the GUI data in the buffer of the image transmission processor shown. That is, the image transmission processor inputs the data into the image transmission processor according to the size of (m*4/3)*n (here it is assumed that the size of the GUI data is m pixels * n pixels), and then stores it in the image transmission processor In a continuous buffer (buffer) of the video transmission processor.
- the buffer is a buffer integrated with the image transmission processor, such as a static RAM of the image transmission processor.
- the image transmission processor reads the GUI data in the ARGB format, the size is m pixels * n pixels, and layered locally (local to the image transmission processor) with the video and/or OSD data received by the image transmission processor Combine to generate display data.
- Step S104 using the image transmission processor to send the display data to a display for display.
- the image transmission processor sends the display data to the display for display through a connection interface, such as a MIPI interface.
- the image transmission processor since the image transmission processor only needs to perform layer merging of GUI data and video and/or OSD data, and does not need to draw a complicated GUI, it does not need strong calculation and drawing capabilities to be competent.
- the method for wireless image transmission according to this embodiment can enable the image transmission processor to use an external application processor to draw a complex GUI with less calculation and drawing capabilities, thereby simplifying the calculation required by the image transmission processor. And drawing resources to reduce costs.
- the timing of sending the GUI data to the application processor and the image transmission is synchronized to reduce the display delay of the GUI data.
- the image transmission processor caches a few lines of data through a small on-chip buffer (buffer), and can receive the GUI data and send it directly to the LCDC, avoiding writing and reading from the device's memory (DDR), thereby reducing the GUI While displaying the delay, it can also avoid occupying the DDR bandwidth of the image transmission processor.
- Fig. 3 shows a schematic flowchart of a method for realizing synchronization in wireless image transmission according to an embodiment of the present invention.
- the method for realizing synchronization in wireless image transmission disclosed in this embodiment includes:
- Step S201 The image transmission processor obtains the input frame header signal of the GUI data, and latches the counter of the image transmission processor through the frame header signal to obtain the first count snapshot of the counter.
- the image transmission processor obtains the input frame header signal of the GUI data through an input interface (for example, MIPI DSI in interface), and then latches the image transmission processor local (local) through the frame header signal , Get the first count snapshot of the counter.
- an input interface for example, MIPI DSI in interface
- Step S202 The image transmission processor obtains the frame timing signal of the refreshing display, and the counter of the image transmission processor is latched by the frame timing signal of the refreshing display to obtain the second count snapshot of the counter.
- the image transmission processor obtains the frame timing signal of the refreshing display of the local liquid crystal display controller (LCDC), and latches the counter of the image transmission processor through the frame timing signal of the refreshing display to obtain the The second count snapshot of the counter.
- LCDC local liquid crystal display controller
- Step S203 according to the difference between the first count snapshot and the second count snapshot, and the set advance value of the first count snapshot relative to the second count snapshot, determine the required adjustment amount of the frame header of the GUI data, as the The application processor sends the adjustment amount of the frame timing of the GUI data.
- the advance value of the first counted snapshot relative to the second counted snapshot is determined according to the set duration that the frame head of the GUI data needs to be advanced relative to the frame head of the refreshed display.
- the set time that needs to be set in advance is used to resist the jitter caused by the different timing of the two chips of the image transmission processor and the application processor in the system, because the frame header timing of the external chip can be adjusted according to the frame, this time can not be very large, and If it is small, it takes up less cache, such as 1 or 2 lines of time.
- a certain data buffer is required to resist jitter. For example, if you need to advance the L line time, the first count snapshot needs to be advanced
- the second count snapshot has a fixed value, such as k; the count gets the difference between the first count snapshot and the second count snapshot, and the difference between k, that is, the amount of GUI data frame header that needs to be adjusted.
- the value of k is the count value of the snapshot counter corresponding to the 2 line time; in fact, the difference between snapshot 1 and snapshot 2 is not Must be equal to k, and the difference is the amount to be adjusted.
- Step S204 Send the adjustment amount of the frame timing of the GUI data to the application processor, so as to adjust the frame timing of the GUI data sent by the application processor.
- the comparison between the frame timing of sending the GUI data by the application processor and the frame timing of refreshing the screen of the image transmission processor is completed, and it is determined according to the comparison result that the application processor sends the GUI
- the adjustment amount of the frame timing of the GUI data is sent to the application processor to adjust the frame timing at which the application processor sends the GUI data.
- the image transmission processor feeds back the adjustment amount of the frame timing of the GUI data to the application processor through a certain data path, and the application processor directly adjusts the frame header position of the output interface (such as the DSI out interface) according to the adjustment amount .
- the application processor needs to have the ability to actively adjust the frame timing of the output interface.
- Fig. 4 shows a schematic flowchart of a method for realizing synchronization in wireless image transmission according to another embodiment of the present invention.
- the method for realizing synchronization in wireless image transmission disclosed in this embodiment includes:
- step S301 the clock source of the application processor is controlled by the digital-to-analog conversion module of the image transmission processor.
- the clock source of the application processor is controlled by outputting a control voltage from the digital-to-analog conversion module of the image transmission processor.
- the application processor uses a voltage-controlled oscillator VCXO as a clock source, and the control voltage of the VCXO comes from the voltage output by the digital-to-analog conversion module DAC of the image transmission processor.
- VCXO voltage-controlled oscillator
- Step S302 Compare the frame timing of the application processor sending the GUI data with the frame timing of the screen refresh of the image transmission processor, and determine the frame timing of the application processor sending the GUI data according to the comparison result. Adjust the amount.
- the adjustment amount of the frame timing for sending the GUI data by the application processor can be obtained by referring to the method described in the foregoing steps S201-S203, and details are not described herein again.
- Step S303 Adjust the control voltage of the clock source of the application processor according to the adjustment amount of the frame timing of the GUI data, thereby adjusting the frequency of the clock source of the application processor.
- the digital-to-analog conversion module DAC of the image transmission processor is controlled to output the control voltage of the clock source VCXO of the application processor, and the frequency of the application processor clock is fine-tuned to realize the input GUI data.
- the timing is synchronized with the frame timing of the screen refresh of the image transmission processor.
- the output frequency of the VCXO is fine-tuned, that is, the working clock of the application processor is adjusted, so that the frame head position of the GUI data output by the application processor will be fine-tuned, and finally it will be synchronized with the local frame head.
- the control voltage of the clock source of the application processor is adjusted so that the clock source of the application processor is Frequency becomes higher;
- the frequency of the clock source of the application processor is kept unchanged.
- FIG. 3 and FIG. 4 gives an exemplary method for realizing synchronization in wireless image transmission.
- the embodiment of the present invention is not limited to the method shown in FIG. 3 and FIG. Use other suitable methods.
- Fig. 5 shows a schematic block diagram of an apparatus for wireless image transmission according to an embodiment of the present invention.
- the apparatus 200 for wireless image transmission in this embodiment includes an application processor 210 and an image transmission processor 220.
- the application processor 210 and the image transmission processor 220 are independent of each other and are connected through an interface. .
- the interface is, for example, an MIPI (Mobile Industry Processor Interface, MIPI for short)) interface.
- MIPI Mobile Industry Processor Interface
- the application processor 210 may be various types of application processor chips or SOC (system on chip) chips.
- the application processor 210 includes a processor (CPU and/or GPU) 211, and a liquid crystal display The controller (ie LCDC) 212 and the output interface 213 (for example, MIPI output interface).
- the application processor 210 connects with the image transmission processor 220 and transmits data through the output interface 213 and the input interface 221 of the image transmission processor 220.
- the application processor 210 is also connected to an external memory, and part of the external memory may be used as the first buffer 214 of the application processor 210.
- the application processor 210 uses a voltage-controlled oscillator (VCXO) 215 as a clock source, which is controlled by the voltage output by the digital-to-analog conversion module (DAC) 226 of the image transmission processor 220.
- VXO voltage-controlled oscillator
- DAC digital-to-analog conversion module
- the application processor 210 is configured to generate GUI data required for wireless image transmission, and send the GUI data to the image transmission processor 220.
- the first buffer 214 is used to store the GUI data generated by the application processor 210.
- the first buffer 214 is an external memory of the application processor 210, such as a continuous buffer of a memory DDR.
- the first buffer 214 may also be integrated in the application processor 210, such as a static RAM of the application processor 210.
- the processor 211 ie, the CPU and/or GPU of the application processor 210 draws the required GUI and generates GUI data.
- the GUI data is stored in the first buffer 214.
- the GUI data is in the ARGB format, that is, the processor 211 stores the GUI data in the first buffer 214 in the ARGB format.
- the liquid crystal display controller 212 of the application processor 210 sends the GUI data in the first buffer 214 to the image transmission processor 220 through the output interface 213 in the RGB888 format.
- the liquid crystal display controller 212 outputs the GUI data in the first buffer 214 in the format of RGB888 as the display data through the output interface 213, such as MIPI output interface (MIPI DSI out), and transmits it to the Image transmission processor 220.
- MIPI DSI out MIPI output interface
- the ARGB format is 4 bytes per pixel
- the RGB888 format is 3 bytes per pixel
- the size of the GUI data is m pixels * n pixels, where m and n are positive integers.
- m or n needs to be divisible by 3.
- m can be divisible by 3, so the output of GUI data is performed according to the size of (m*4/3)*n.
- GUI data is exemplary, and in other embodiments, other formats may also be used as needed, and are not limited to the ARGB format and the RGB888 format.
- the image transmission processor 220 may use various types of image transmission chips. As shown in FIG. 5, the image transmission processor 220 includes an input interface 221, a second buffer 222, a liquid crystal display controller (ie LCDC) 223, an output interface 224, a timing processing module 225, and a digital-to-analog conversion module 225.
- the input interface 221 and the output interface 224 are, for example, MIPI interfaces, and the image transmission processor 220 is connected to the application processor 210 and the display 230 through the input interface 221 and the output interface 224, respectively, and performs data transmission.
- the display 230 is, for example, an LCD display.
- the liquid crystal display controller (ie, LCDC) 223 is used to control the display data of the display 230 and the timing of refreshing the screen, and to receive the video/OSD data sent by the transmitter.
- the second buffer 222 is used to store GUI data sent by the application processor 210.
- the second buffer 222 is a buffer integrated with the image transmission processor 222, such as a static RAM of the image transmission processor.
- the image transmission processor 220 is configured to receive GUI data sent by the application processor 210, and video and/or OSD data sent by other devices, and combine the received GUI data and video and /Or OSD data is merged to form display data, and the display data is sent to the display for display.
- the image transmission processor 220 receives the video/OSD data sent by the transmitter on the one hand, and receives the GUI sent by the application processor 210 through the input interface 221, for example, MIPI DSI in. Data, the GUI data is then stored in the second buffer 222.
- the image transmission processor 220 receives the GUI data in the RGB888 format, that is, the image transmission processor 220 has a size of (m*4/3)*n (it is assumed here that the GUI data The size is m pixels * n pixels), the data is input into the image transmission processor 220, and then stored in the second buffer 222 of the image transmission processor 220, for example, stored in a continuous buffer (buffer) .
- the image transmission processor 220 reads the GUI data in the ARGB format, with a size of m pixels*n pixels, and performs local processing (local to the image transmission processor) with the video and/or OSD data received by the image transmission processor.
- the layers are merged to generate display data.
- the display data is sent to the display 230 through the liquid crystal display controller 223 and the output interface 224 for display.
- the image transmission processor since the image transmission processor only needs to perform layer merging of GUI data and video and/or OSD data, and does not need to draw a complicated GUI, it does not need strong calculation and drawing capabilities to be competent.
- the method for wireless image transmission according to this embodiment can enable the image transmission processor to use an external application processor to draw a complex GUI with less calculation and drawing capabilities, thereby simplifying the calculation required by the image transmission processor. And drawing resources to reduce costs.
- the timing processing module 225 is configured to send the GUI data to the application processor 210 and the frame timing of the screen refresh of the image transmission processor 220, that is, the refresh timing of the LCDC223 Synchronize to reduce the display delay of the GUI data.
- the timing processing module 225 is specifically configured to compare the frame timing of the GUI data sent by the application processor 210 with the frame timing of the screen refresh of the image transmission processor 220, and according to the comparison result Determine the adjustment amount of the frame timing of the GUI data sent by the application processor 210; and send the adjustment amount of the frame timing of the GUI data to the application processor 210 to adjust the application processor to send the GUI data The frame timing.
- the digital-to-analog conversion module 226 is used to control the voltage of the clock source 215 of the application processor 210.
- the timing processing module 225 is used to compare the frame timing of the GUI data sent by the application processor 210 with the frame timing of the screen refresh of the image transmission processor 220, and determine according to the comparison result that the application processor sends the frame timing of the GUI data.
- the adjustment amount of the frame timing of the GUI data; the digital-to-analog conversion module 226 is further configured to adjust the control voltage of the clock source of the application processor according to the adjustment amount of the frame timing of the GUI data, thereby adjusting the application processing The frequency of the clock source of the device.
- the control voltage of the clock source of the application processor is adjusted to make the frequency of the clock source of the application processor Become higher;
- the frequency of the clock source of the application processor is kept unchanged.
- the timing processing module 225 includes a counter, and the timing processing module 225 is configured to: obtain the frame header signal of the input GUI data, and latch the counter through the frame header signal , Get the first count snapshot of the counter; get the frame timing signal of the refresh display, and lock the counter through the frame timing signal of the refresh display to obtain the second count snapshot of the counter; according to the first count snapshot and the first count snapshot 2
- the difference between the counted snapshots, and the set advance value of the first counted snapshot relative to the second counted snapshot determine the amount of adjustment required for the frame header of the GUI data, as the frame for the application processor to send the GUI data The amount of timing adjustment.
- the advance value of the first counted snapshot relative to the second counted snapshot is determined according to the set duration that the frame head of the GUI data needs to be advanced relative to the frame head of the refreshed display.
- the timing processing module 225 obtains the input frame header signal of the GUI data through the input interface 221, such as the MIPI input interface.
- the timing processing module 225 obtains the frame timing signal of the swipe display from the liquid crystal display controller 223.
- the device for wireless image transmission draws the GUI through the application processor, and sends it to the image transmission processor through the MIPI interface.
- the image transmission processor combines the GUI with other layers for display, and due to the design of the external
- the mechanism of synchronizing the timing of the input GUI with the frame timing displayed by the image transmission processor which reduces the time delay of GUI display and reduces the DDR bandwidth occupation of the target chip, while still obtaining low-latency image transmission.
- Fig. 6 shows a schematic block diagram of an electronic device according to an embodiment of the present invention.
- the electronic device 300 includes one or more processors 310 and one or more memories 320.
- the processor 310 may be a central processing unit (CPU) or other forms of processing units with data processing capabilities and/or instruction execution capabilities, such as application processors (AP) and image transmission processors, and may control the electronic device 300 Other components in the to perform the desired function.
- CPU central processing unit
- AP application processors
- image transmission processors may control the electronic device 300 Other components in the to perform the desired function.
- one or more programs are stored in the memory 320; when the one or more programs are executed by the one or more processors, the one or more processors 310 are caused to implement the embodiments according to the present invention.
- the described method for wireless image transmission is described in the image transmission.
- the memory 320 is used to implement program codes of corresponding steps in the method for wirelessly transmitting images according to an embodiment of the present invention.
- the memory 320 may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory.
- the volatile memory may include random access memory (RAM) and/or cache memory (cache), for example.
- the non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, and other permanent memories.
- One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 310 may run the program instructions to implement the above-described embodiments of the present invention (implemented by the processor) for The method of wirelessly transmitting images and/or other desired functions.
- the electronic device may also include a display, which is connected to the processor through, for example, an MIPI interface.
- the following steps are executed when the program code is executed by the processor 310:
- the image transmission processor is used to send the display data to the display for display.
- the following steps are also executed when the program code is executed by the processor 310:
- the adjustment amount of the frame timing of the GUI data is sent to the application processor to adjust the frame timing at which the application processor sends the GUI data.
- a storage medium is also provided, and program instructions are stored on the storage medium.
- program instructions are executed by a computer or a processor, they are used to execute the wireless device used in the embodiment of the present invention.
- the storage medium may include, for example, a memory card of a smart phone, a storage component of a tablet computer, a hard disk of a personal computer, a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a portable compact disk read-only memory (CD-ROM), USB memory, or any combination of the above storage media.
- the computer-readable storage medium may be any combination of one or more computer-readable storage media.
- the computer program instructions perform the following steps when run by a computer: use an application processor to generate GUI data, and send the GUI data to the image transmission processor through the application processor; use the image transmission
- the processor receives video and/or OSD data; uses the image transmission processor to merge the received GUI data and video and/or OSD data to form display data; uses the image transmission processor to send the display data To the monitor for display.
- the embodiment of the present invention provides a method and device for wireless image transmission, storage medium and electronic equipment. Since the GUI is drawn by the external application processor, the GUI data sent by the external application processor is combined with other The layers are combined and displayed. On the one hand, for the image transmission processor with limited 2D/3D drawing capabilities, the external application processor can draw a complex GUI to complete the wireless image transmission; on the other hand, because the image transmission processor is used There is no need to draw complex GUI capabilities and computing resources, thus reducing the computing and drawing resources required by the image transmission processor, and reducing the requirements and cost of the image transmission processor.
- the disclosed device and method may be implemented in other ways.
- the device embodiments described above are only illustrative.
- the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another device, or some features can be ignored or not implemented.
- the various component embodiments of the present invention may be implemented by hardware, or by software modules running on one or more processors, or by a combination of them.
- a microprocessor or a digital signal processor may be used in practice to implement some or all of the functions of some modules according to the embodiments of the present invention.
- the present invention can also be implemented as a device program (for example, a computer program and a computer program product) for executing part or all of the methods described herein.
- a program for realizing the present invention may be stored on a computer-readable medium, or may have the form of one or more signals.
- Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
Description
Claims (34)
- 一种用于无线传输图像的方法,其特征在于,包括:利用应用处理器生成GUI数据,并通过应用处理器将所述GUI数据发送至图传处理器;利用所述图传处理器接收视频和/或OSD数据;利用所述图传处理器将接收的所述GUI数据以及视频和/或OSD数据进行合并形成显示数据;利用所述图传处理器将所述显示数据发送至显示器进行显示,其中,所述应用处理器和所述图传处理器彼此独立,且通过接口连接。
- 根据权利要求1所述的方法,其特征在于,还包括:将所述GUI数据存储至所述应用处理器的缓冲器中。
- 根据权利要求1所述的方法,其特征在于,所述GUI数据为ARGB格式。
- 根据权利要求1所述的方法,其特征在于,所述GUI数据的尺寸为m像素*n像素,其中,m和n正整数,且m或n能被3整除。
- 根据权利要求1所述的方法,其特征在于,所述应用处理器通过所述接口以RGB888格式将所述GUI数据发送至所述图传处理器。
- 根据权利要求5所述的方法,其特征在于,所述图传处理器以RGB888格式接收所述GUI数据,并将所述GUI数据存储在所示所述图传处理器的缓冲器中。
- 根据权利要求6所述的方法,其特征在于,所述图传处理器以ARGB格式从所述图传处理器的缓冲器中读取所述GUI数据,然后与接收的视频和/或OSD数据进行图层合并。
- 根据权利要求1所述的方法,其特征在于,所述应用处理器和所述图传处理器具有MIPI接口,所述应用处理器和所述图传处理器通过MIPI接口连接。
- 根据权利要求1-8中的任一项所述的方法,其特征在于,还包括:对所述应用处理器发送所述GUI数据的时序与所述图传处理器的刷屏的帧定时进行同步,以减少所述GUI数据的显示延迟。
- 根据权利要求9所述的方法,其特征在于,对所述应用处理器发送所述GUI数据的时序与所述图传处理器的刷屏的帧定时进行同步,包括:比较所述应用处理器发送所述GUI数据的帧定时与所述图传处理器的刷屏的帧定时,并根据比较结果确定所述应用处理器发送所述GUI数据的帧定时的调整量;将所述GUI数据的帧定时的调整量发送至所述应用处理器,以调整应用处理器发送所述GUI数据的帧定时。
- 根据权利要求9所述的方法,其特征在于,对所述应用处理器发送所述GUI数据的时序与所述图传处理器的刷屏的帧定时进行同步,包括:通过所述图传处理器的数模转换模块的控制所述应用处理器的时钟源;比较所述应用处理器发送所述GUI数据的帧定时与所述图传处理器的刷屏的帧定时,并根据比较结果确定所述应用处理器发送所述GUI数据的帧定时的调整量;根据所述GUI数据的帧定时的调整量调节所述应用处理器的时钟源的控制电压,从而调节所述应用处理器的时钟源的频率。
- 根据权利要求11所述的方法,其特征在于,当所述GUI数据的帧定时的调整量要求所述GUI数据的帧定时的提前时,调节所述应用处理器的时钟源的控制电压,使所述应用处理器的时钟源的频率变高;或者当所述GUI数据的帧定时的调整量要求所述GUI数据的帧定时的延迟时,调节所述应用处理器的时钟源的控制电压,使所述应用处理器的时钟源的频率变低;或者当所述GUI数据的帧定时的调整量不要求所述GUI数据的帧定时变化时,则保持所述应用处理器的时钟源的频率变不变。
- 根据权利要求10或11所述的方法,其特征在于,比较所述应用处理器发送所述GUI数据的帧定时与所述图传处理器的刷屏的帧定时,并根据比较结果确定所述应用处理器发送所述GUI数据的帧定时的调整量,包括:所述图传处理器获得输入的所述GUI数据的帧头信号,并通过该帧头 信号锁存所述图传处理器的计数器,得到该计数器的第1计数快照;所述图传处理器获得刷屏显示的帧定时信号,通过该刷屏显示的帧定时信号锁存所述图传处理器的计数器,得到该计数器的第2计数快照;根据第1计数快照和第2计数快照的差值,以及设定的第1计数快照相对第2计数快照的提前值,确定所述GUI数据的帧头需要的调整量,作为所述应用处理器发送所述GUI数据的帧定时的调整量。
- 根据权利要求13所述的方法,其特征在于,所述第1计数快照相对第2计数快照的提前值根据所述GUI数据的帧头相对刷屏显示的帧头需要提前的设定时长确定。
- 根据权利要求13所述的方法,其特征在于,所述图传处理器通过MIPI接收接口获得输入的所述GUI数据的帧头信号。
- 一种用于无线传输图像的装置,其特在于,包括应用处理器和图传处理器,所述应用处理器用于生成GUI数据,并将所述GUI数据发送至所述图传处理器;所述图传处理器用于接收所述应用处理器发送的GUI数据,以及其他设备发送的视频和/或OSD数据,并将接收的所述GUI数据以及视频和/或OSD数据进行合并形成显示数据;所述图传处理器还用于将所述显示数据发送至显示器进行显示,其中,所述应用处理器和所述图传处理器彼此独立,且通过接口连接。
- 根据权利要求16所述的装置,其特征在于,还包括:第一缓冲器,所述应用处理器将生成的所述GUI数据存储至所述第一缓冲器中,其中,所述第一缓冲器集成设置在所述应用处理器中,或者设置在与所述应用处理器连的存储器中。
- 根据权利要求16所述的装置,其特征在于,所述GUI数据为ARGB格式。
- 根据权利要求16所述的装置,其特征在于,所述GUI数据的尺寸为m像素*n像素,其中,m和n正整数,且m或n能被3整除。
- 根据权利要求16所述的装置,其特征在于,所述应用处理器以 RGB888格式将所述GUI数据发送至所述图传处理器。
- 根据权利要求20所述的装置,其特征在于,所述图传处理器集成有第二缓冲器,所述图传处理器以RGB888格式接收所述GUI数据,并将所述GUI数据存储在所示所述第二缓冲器中。
- 根据权利要求21所述的装置,其特征在于,所述图传处理器以ARGB格式从所述第二缓冲器中读取所述GUI数据,然后与接收的视频和/或OSD数据进行合并。
- 根据权利要求16所述的装置,其特征在于,所述应用处理器和所述图传处理器具有MIPI接口,所述应用处理器和所述图传处理器通过MIPI接口连接。
- 根据权利要求16-23中的任一项所述的装置,其特征在于,所述图传处理器还包括定时处理模块,所述定时处理模块用于对所述应用处理器发送所述GUI数据的时序与所述图传处理器的刷屏的帧定时进行同步,以减少所述GUI数据的显示延迟。
- 根据权利要求24所述的装置,其特征在于,所述定时处理模块具体用于:比较所述应用处理器发送所述GUI数据的帧定时与所述图传处理器的刷屏的帧定时,并根据比较结果确定所述应用处理器发送所述GUI数据的帧定时的调整量;将所述GUI数据的帧定时的调整量发送至所述应用处理器,以调整应用处理器发送所述GUI数据的帧定时。
- 根据权利要求24所述的装置,其特征在于,所述图传处理器还包括数模转换模块,所述数模转换模块用于控制所述应用处理器的时钟源电压;所述定时处理模块用于比较所述应用处理器发送所述GUI数据的帧定时与所述图传处理器的刷屏的帧定时,并根据比较结果确定所述应用处理器发送所述GUI数据的帧定时的调整量;所述数模转换模块还用于根据所述GUI数据的帧定时的调整量调节所述应用处理器的时钟源的控制电压,从而调节所述应用处理器的时钟源的 频率。
- 根据权利要求26所述的装置,其特征在于,当所述GUI数据的帧定时的调整量要求所述GUI数据的帧定时的提前时,调节所述应用处理器的时钟源的控制电压,使所述应用处理器的时钟源的频率变高;或者当所述GUI数据的帧定时的调整量要求所述GUI数据的帧定时的延迟时,调节所述应用处理器的时钟源的控制电压,使所述应用处理器的时钟源的频率变低;或者当所述GUI数据的帧定时的调整量不要求所述GUI数据的帧定时变化时,则保持所述应用处理器的时钟源的频率变不变。
- 根据权利要求25或26所述的装置,其特征在于,所述定时处理模块包括计数器,所述定时处理模块用于:获得输入的所述GUI数据的帧头信号,并通过该帧头信号锁存所述计数器,得到该计数器的第1计数快照;获得刷屏显示的帧定时信号,通过该刷屏显示的帧定时信号锁存所述计数器,得到该计数器的第2计数快照;根据第1计数快照和第2计数快照的差值,以及设定的第1计数快照相对第2计数快照的提前值,确定所述GUI数据的帧头需要的调整量,作为所述应用处理器发送所述GUI数据的帧定时的调整量。
- 根据权利要求28所述的装置,其特征在于,所述第1计数快照相对第2计数快照的提前值根据所述GUI数据的帧头相对刷屏显示的帧头需要提前的设定时长确定。
- 根据权利要求28所述的装置,其特征在于,所述定时处理模块通过MIPI接收接口获得输入的所述GUI数据的帧头信号。
- 根据权利要求28所述的装置,其特征在于,所述图传处理器包括液晶显示控制模块,所述定时处理模块从所述液晶显示控制模块获得刷屏显示的帧定时信号。
- 一种存储介质,其特征在于,所述存储介质上存储有计算机程序,所述计算机程序在运行时执行如权利要求1-15中的任一项所述的方法。
- 一种电子设备,其特征在于,包括:权利要求16-31中的任一项 所述的装置以及显示器,所述显示器与图传处理器连接。
- 根据权利要求33所述的电子设备,其特征在于,所述图传处理器通过MIPI接口与所述显示器连接。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201980095632.1A CN113728622A (zh) | 2019-12-31 | 2019-12-31 | 用于无线传输图像的方法及装置、存储介质及电子设备 |
PCT/CN2019/130306 WO2021134397A1 (zh) | 2019-12-31 | 2019-12-31 | 用于无线传输图像的方法及装置、存储介质及电子设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2019/130306 WO2021134397A1 (zh) | 2019-12-31 | 2019-12-31 | 用于无线传输图像的方法及装置、存储介质及电子设备 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2021134397A1 true WO2021134397A1 (zh) | 2021-07-08 |
WO2021134397A9 WO2021134397A9 (zh) | 2021-11-04 |
Family
ID=76686348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2019/130306 WO2021134397A1 (zh) | 2019-12-31 | 2019-12-31 | 用于无线传输图像的方法及装置、存储介质及电子设备 |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN113728622A (zh) |
WO (1) | WO2021134397A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114257772A (zh) * | 2021-11-26 | 2022-03-29 | 苏州华兴源创科技股份有限公司 | 数据传输的调整方法、装置、计算机设备及可读存储介质 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050024535A1 (en) * | 2003-08-01 | 2005-02-03 | Pioneer Corporation | Image display apparatus |
US20100017717A1 (en) * | 2008-07-16 | 2010-01-21 | Kabushiki Kaisha Toshiba | Video processing device and control method therefor |
CN101796831A (zh) * | 2007-08-27 | 2010-08-04 | 三星电子株式会社 | 基于显示装置的屏幕大小缩放视频的自适应视频处理设备及方法 |
CN105761120A (zh) * | 2016-03-31 | 2016-07-13 | 南京云创大数据科技股份有限公司 | 一种自动匹配试衣场景的虚拟试衣系统及其应用方法 |
CN205453901U (zh) * | 2015-12-31 | 2016-08-10 | 大连捷成科技有限公司 | 一种用于视频播出的显示控制系统 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR960000542B1 (ko) * | 1993-11-27 | 1996-01-08 | 삼성전자주식회사 | 디지탈 무선 통신 시스템에서 동기 신호를 이용한 프레임 타이밍신호 추출방법 및 시스템 |
JP4011949B2 (ja) * | 2002-04-01 | 2007-11-21 | キヤノン株式会社 | マルチ画面合成装置及びデジタルテレビ受信装置 |
JP4425115B2 (ja) * | 2004-11-16 | 2010-03-03 | 日本電信電話株式会社 | クロック同期装置およびプログラム |
US8102398B2 (en) * | 2006-03-03 | 2012-01-24 | Ati Technologies Ulc | Dynamically controlled power reduction method and circuit for a graphics processor |
US20080205568A1 (en) * | 2007-02-28 | 2008-08-28 | Matsushita Electric Industrial Co., Ltd. | Dsrc communication circuit and dsrc communication method |
WO2009045244A1 (en) * | 2007-09-28 | 2009-04-09 | Thomson Licensing | Time-frequency synchronization and frame number detection for dmb-t systems |
US9262915B2 (en) * | 2013-05-09 | 2016-02-16 | KERBspace, Inc | Intelligent urban communications portal and methods |
US9927809B1 (en) * | 2014-10-31 | 2018-03-27 | State Farm Mutual Automobile Insurance Company | User interface to facilitate control of unmanned aerial vehicles (UAVs) |
CN105872418A (zh) * | 2016-03-30 | 2016-08-17 | 浙江大华技术股份有限公司 | 一种在数字图像上叠加gui图层的方法及装置 |
CN108132786B (zh) * | 2017-12-21 | 2021-03-30 | 广州路派电子科技有限公司 | 一种基于osd的gui设计方法 |
-
2019
- 2019-12-31 CN CN201980095632.1A patent/CN113728622A/zh active Pending
- 2019-12-31 WO PCT/CN2019/130306 patent/WO2021134397A1/zh active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050024535A1 (en) * | 2003-08-01 | 2005-02-03 | Pioneer Corporation | Image display apparatus |
CN101796831A (zh) * | 2007-08-27 | 2010-08-04 | 三星电子株式会社 | 基于显示装置的屏幕大小缩放视频的自适应视频处理设备及方法 |
US20100017717A1 (en) * | 2008-07-16 | 2010-01-21 | Kabushiki Kaisha Toshiba | Video processing device and control method therefor |
CN205453901U (zh) * | 2015-12-31 | 2016-08-10 | 大连捷成科技有限公司 | 一种用于视频播出的显示控制系统 |
CN105761120A (zh) * | 2016-03-31 | 2016-07-13 | 南京云创大数据科技股份有限公司 | 一种自动匹配试衣场景的虚拟试衣系统及其应用方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114257772A (zh) * | 2021-11-26 | 2022-03-29 | 苏州华兴源创科技股份有限公司 | 数据传输的调整方法、装置、计算机设备及可读存储介质 |
Also Published As
Publication number | Publication date |
---|---|
CN113728622A (zh) | 2021-11-30 |
WO2021134397A9 (zh) | 2021-11-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8687007B2 (en) | Seamless display migration | |
WO2022052772A1 (zh) | 多窗口投屏场景下的应用界面显示方法及电子设备 | |
US9036084B2 (en) | Apparatus and method for synchronous display of video data | |
US10430918B2 (en) | Display driver, display system, and method of operating the display driver | |
US10554865B2 (en) | Display controller for generating video sync signal using external clock, an application processor including the controller, and an electronic system including the controller | |
JP5755333B2 (ja) | 表示動作を制御する技術 | |
US9899002B2 (en) | Information processing methods for displaying parts of an object on multiple electronic devices | |
TWI455013B (zh) | 用於改變影像顯示特性之技術 | |
US20140184611A1 (en) | Method and apparatus for sending partial frame updates rendered in a graphics processor to a display using framelock signals | |
US10741128B2 (en) | Dual scan out display system | |
WO2023125677A1 (zh) | 独显插帧电路、方法、装置、芯片、电子设备及介质 | |
US20200333949A1 (en) | Electronic apparatus and controlling method thereof | |
CN113168301A (zh) | 锁相多显示器同步 | |
CN109196548B (zh) | 用于在高分辨率显示器上提供多个屏幕区域的机制 | |
GB2538797B (en) | Managing display data | |
WO2021134397A1 (zh) | 用于无线传输图像的方法及装置、存储介质及电子设备 | |
KR20150021800A (ko) | 전자 장치 및 영상 표시 방법 | |
US20170068502A1 (en) | Display apparatus and method for controlling the display apparatus thereof | |
WO2023193598A1 (zh) | 一种图像处理方法、装置、设备及存储介质 | |
US20190045236A1 (en) | Generalized low latency user interaction with video on a diversity of transports | |
TWI770979B (zh) | 螢幕顯示方法及裝置 | |
US10777169B2 (en) | Systems and methods to synchronize display panels | |
TWI488046B (zh) | 於智慧型手機/平板電腦中減少視頻訊號於行動工業處理器介面傳輸頻寬及耗電之方法及裝置 | |
US20230275716A1 (en) | System and method for assisting data transmission over virtual channels | |
US9424807B2 (en) | Multimedia system and operating method of the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19958346 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19958346 Country of ref document: EP Kind code of ref document: A1 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19958346 Country of ref document: EP Kind code of ref document: A1 |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 20/01/2023) |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19958346 Country of ref document: EP Kind code of ref document: A1 |