WO2020034893A1 - 智能交互***、书写轨迹显示方法、装置、平板及介质 - Google Patents

智能交互***、书写轨迹显示方法、装置、平板及介质 Download PDF

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Publication number
WO2020034893A1
WO2020034893A1 PCT/CN2019/099797 CN2019099797W WO2020034893A1 WO 2020034893 A1 WO2020034893 A1 WO 2020034893A1 CN 2019099797 W CN2019099797 W CN 2019099797W WO 2020034893 A1 WO2020034893 A1 WO 2020034893A1
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Prior art keywords
screen
signal
interface
image
driving board
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PCT/CN2019/099797
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English (en)
French (fr)
Inventor
刘伟
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广州视源电子科技股份有限公司
广州视睿电子科技有限公司
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Publication of WO2020034893A1 publication Critical patent/WO2020034893A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1407—General aspects irrespective of display type, e.g. determination of decimal point position, display with fixed or driving decimal point, suppression of non-significant zeros

Definitions

  • the present application relates to image processing technology of a touch device, for example, to an intelligent interaction system, a writing track display method, a device, a tablet, and a medium.
  • the related art intelligent interactive system generally includes a system main chip and a screen driving board.
  • the system main chip is set to control basic functions such as the operating system, and the screen driving board is set to process according to the image signal output by the system main chip to form a screen display. Signal to control the display of the display.
  • the system main chip is generally connected to an external system module or an internal system module through an image input interface, such as High Definition Multimedia Interface (HDMI), to receive the screen interface image transmitted by the system module, and then through the image output interface ( HDMI) to output the screen interface image transmitted by the system module or the screen interface image of the local system to the screen driver board to control the display screen of the display screen.
  • HDMI High Definition Multimedia Interface
  • the intelligent interaction system in the related art will also allow the system main chip to connect to input devices such as a handwriting pad and a touch pad to receive signals input by the user's touch.
  • input devices such as a handwriting pad and a touch pad to receive signals input by the user's touch.
  • the related art has at least the following problems.
  • the delay time of the HDMI when transmitting the image is usually more than 30ms.
  • the screen interface image and the writing track image are synthesized in the system main chip, it also needs to pass through the system main chip's HDMI output interface. It is sent to the screen driver board for processing and display, so there is a phenomenon that the display of the writing track image is delayed relative to the user's actual writing.
  • the embodiments of the present application provide an intelligent interactive system, a writing track display method, a device, a tablet, and a medium, so as to shorten the writing delay time and improve the synchronization of writing operation and display.
  • an embodiment of the present application provides an intelligent interaction system, including a system main chip and a screen driving board.
  • the screen driving board is provided with a screen driving signal interface and a touch signal interface, wherein:
  • the screen driving signal interface is configured to receive a screen interface image signal from the system main chip, and the touch signal interface is configured to receive a writing track signal from a touch device;
  • the screen driving board is configured to perform image synthesis on the screen interface image signal and the writing track signal for display.
  • an embodiment of the present application further provides a writing track display method, including:
  • the screen driving board of the intelligent interactive system receives the screen interface image signal from the system main chip of the intelligent interactive system through the screen driving signal interface;
  • the screen driving board receives a writing track signal from a touch device through a touch signal interface
  • the screen driving board performs image synthesis on the screen interface image signal and the writing track signal for display.
  • an embodiment of the present application further provides a writing track display device.
  • the device includes:
  • the image receiving unit is configured to control a screen driving board of the intelligent interactive system, and receives a screen interface image signal from a system main chip of the intelligent interactive system through a screen driving signal interface;
  • a track receiving unit configured to control the screen driving board to receive a writing track signal from a touch device through a touch signal interface
  • the image synthesizing unit is configured to control the screen driving board to synthesize an image signal of the screen interface and the writing track signal for display.
  • An embodiment of the present application further provides a smart interactive tablet, where the smart interactive tablet includes:
  • One or more processors are One or more processors;
  • Memory set to store one or more programs
  • the one or more processors When the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the method described in any embodiment of the present application.
  • the embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored.
  • a computer program is stored on which a computer program is stored.
  • FIG. 1a is a schematic structural diagram of an intelligent interaction system according to the first embodiment of the present application.
  • FIG. 1b is a schematic structural diagram of an intelligent interaction system in the related art
  • FIG. 2 is a schematic structural diagram of an intelligent interaction system provided in Embodiment 2 of the present application.
  • FIG. 3 is a schematic flowchart of a writing track display method provided in Embodiment 3 of the present application.
  • FIG. 4 is a schematic structural diagram of a writing track display device according to a fourth embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of an intelligent interactive tablet provided in Embodiment 5 of the present application.
  • FIG. 1a is a schematic structural diagram of an intelligent interaction system according to the first embodiment of the present application.
  • the intelligent interaction system includes: a system main chip 1 and a screen driving board 2. Each part is described in detail below.
  • the screen driving board 2 is provided with a driving screen signal interface 21 and a touch signal interface 22, wherein the driving screen signal interface 21 is configured to receive a screen interface image signal from the system main chip 1, and the touch signal interface 22 is configured In order to receive the writing track signal from the touch device 3, the screen driving board 2 is configured to perform image synthesis of the screen interface image signal and the writing track signal for display.
  • the system main chip 1 may be the main chip of the intelligent interactive system, for example, it may be a data processing chip of an intelligent interactive tablet, which may be configured to obtain the screen interface image signal on itself or other system modules and send it to the screen driver.
  • the screen driver board 2 may be a timer / counter control register (Timer Control Register, TCON) main chip. The role of the TCON board is to send the screen interface image signal (including Red Green Blue, RGB) from the system main chip 1. ) Data signals, clock signals, and control signals are processed, and then converted into low-voltage differential signals (LVDS) that can drive the LCD screen, and then the signals are sent directly to the LCD screen.
  • LVDS receiver chip In this embodiment, the screen driving board 2 performs image synthesis before signal conversion, for example, the screen interface image signal and the writing track signal are synthesized into a frame image, and then the image is signal converted.
  • the touch device 3 when the user performs a writing operation on the touch device 3, the touch device 3 sends the collected writing track to the screen drive board 2 through the touch signal interface 22 of the screen drive board 2.
  • the system master The chip 1 can send the screen interface image to be displayed on the display screen to the screen drive board 2 through the screen drive signal interface 21 of the screen drive board 2.
  • the screen drive board 2 synthesizes the screen interface image and the writing track, it synthesizes the image
  • the image is converted into a signal format supported by the display screen to send a composite image signal to the display screen for display after the conversion.
  • the screen driving board 2 is configured to enable a touch signal interface 22 when receiving an image synthesis instruction, and receive a writing track signal from the touch device 3 through the touch signal interface 22.
  • the screen driving board 2 receives the writing track signal when receiving the image synthesis instruction, and turns on the image synthesis mode at the same time.
  • the advantage is that the writing track can be prevented from being displayed incorrectly when the user uses the touch device 3 for other operations.
  • the intelligent interactive system further includes: a touch device 3, which is connected to the screen driving board 2 through a touch signal interface 22, and is configured to collect the writing track signal and send the writing track signal Give the screen driver board 2.
  • the touch device 3 may be a touch device provided in the smart interactive system, such as a touch screen in a touch display screen, or a touch device external to the smart interactive system, such as a tablet or a smart electronic pen.
  • the operation process is collected and recorded in data form.
  • the coordinate data of the touch point is collected at a preset frequency, and the writing trajectory signal is generated according to the coordinate data collected within a preset period of time.
  • the touch signal interface 22 is transmitted to the screen driving board 2.
  • the preset time period may be, for example, the time from when the touch point is detected to the time when the last touch point is detected, that is, the pen-down time to the pen-up time.
  • the image synthesis instruction is the software startup information of the target application software transmitted from the system main chip 1; or the image synthesis instruction is the communication interface 23 of the screen driver board 2 and the target in the system module received from the micro control unit 6. Software startup information for application software.
  • the target application software may be software having a writing function, such as whiteboard software, drawing software, and the like.
  • An optional implementation manner of this embodiment is that, when the target application software is installed on the system main chip, when the target application software is started, software startup information may be generated as an image synthesis instruction and sent directly to the screen driver board. For example, as shown in FIG. 1a, when the whiteboard software installed on the system main chip 1 is started, the generated software startup information is sent to the micro control unit 6, and the micro control unit 6 passes the communication interface of the screen driving board 2 23 is sent to the screen driver board 2.
  • the target application software is installed on the system module 4.
  • the intelligent interactive system further includes other system modules 4 connected or externally connected, and the system main chip 1 passes the image
  • the transmission interface 11 is connected to the system module 4 and is configured to receive a screen interface image of a target application software running on the system module 4.
  • the image transmission interface 11 may be, for example, an HDMI interface.
  • the system main chip 1 is respectively connected to two system modules 4 through an image transmission interface 11.
  • the types of operating systems running in the two system modules 4 may be different, for example, a system running on one system module may be It is a windows system, and the system running on another system module may be an Android system.
  • the two system modules 4 are connected to the micro control unit 6 through the system switching switch 5.
  • the micro control unit 6 can switch the operating system by controlling the on and off of the system switching switch 5. For example, one system module can be switched to a windows system; Or connect to another system module to switch to the Android system; or cut off the connection to the two to switch to the system of the smart interactive tablet itself.
  • at least one of the system main chip 1 and the two system modules 4 or the target application software is installed in the chip.
  • the generated software startup information may be sent to the micro control unit 6 through the system switch 5 that is turned on, and the micro control unit 6 passes the screen through the screen.
  • the communication interface 23 of the driving board 2 is sent to the screen driving board 2.
  • the system module 4d is connected through the image transmission interface 11d of the system main chip 1d, and the system main chip 1d connects the screen interface of the system main chip or the system module where the target application software is located.
  • the synthesized image is sent to the screen driving board 2d through the screen signal interface 21d for image processing and display.
  • the image transmission interface 11d and the driving signal signal interface 21d are both HDMI interfaces.
  • the image transmission delay time is long, which causes the touch device 3d to capture the writing track and the final display time interval of the writing track.
  • the influence of the image transmission delay of the signal interface 21d makes the display of the writing track image with a delay of more than 30ms relative to the user's actual writing, and the delay time is longer.
  • an intelligent interactive system as shown in FIG. 1a is used. Since the image synthesis process is transferred from the system main chip 1 to the screen driver board 2, the synthesized image does not need to be driven through the screen anymore.
  • the signal interface 21 performs transmission, but is directly sent by the screen driving board 2 to a display screen for display. Therefore, the writing delay time can be greatly reduced, and the synchronization between the writing operation and the display can be improved.
  • the working principle of the intelligent interaction system shown in FIG. 1a is described in detail through a specific example.
  • the system module 4 such as an Android module or a Personal Computer (PC) module
  • the system main chip 1 detects that the target application software (such as whiteboard software) installed in its own system is started, it generates software startup information and guides it through the
  • the system switching switch 5 sends the software startup information to the micro control unit 6; the micro control unit 6 forwards the software startup information to the screen drive board 2 through the communication interface 23; the screen drive board 2 turns on after receiving the software startup information And enter the image synthesis mode, and in this image synthesis mode, the screen interface image received from the system main chip 1 through the screen signal interface 21, and the touch device 3 (for example, The writing track received by the tablet) is synthesized into a frame image for display.
  • the system module 4 such as an Android module or a Personal Computer (PC) module
  • the system main chip 1 detects that the target application software (such as whiteboard software) installed in its own system is started, it generates
  • the screen interface image is a screen interface image to be displayed on the display screen.
  • the system module 4 sends the screen interface image to be displayed to the system main chip 1.
  • the system main chip 1 then sends the screen driver board 2 to the screen driver board 2 through the screen drive signal interface 21; if the target application software is installed in the system of the system main chip 1, the system main chip 1 directly sends the screen interface image through the screen drive signal interface 21 Go to the screen driver board 2.
  • a screen driving signal interface and a touch signal interface are provided on a screen driving board in an intelligent interactive system, and the screen driving board receives a screen interface image signal received from the screen driving signal interface and a touch screen.
  • the writing track signal received by the control signal interface is used for image synthesis for display. Because the image synthesis process originally performed in the system main chip is transferred to the screen driver board, the process of displaying the synthesized image is not performed. Affected by the delay of the HDMI output interface, it solves the display of the writing track image in the related technology because the image synthesis process needs to be sent to the screen driver board for processing through the HDMI output interface after the image synthesis process is completed in the system main chip. Compared with the problem that the user's real writing is delayed, the effect of shortening the writing delay time and improving the synchronization of writing operation and display is realized.
  • the screen driving board 2 is further provided with an instruction sending interface 24 configured to be connected to the system main chip 1.
  • the screen driving board 2 may be based on the current The buffered one-frame composite image performs image synthesis on the received writing track signal.
  • the screen drive board 2 only needs to receive the writing track signal.
  • the screen drive board 2 can generate a pause command and send it to the system through the command sending interface 24.
  • the main chip so that the system main chip 1 temporarily suspends sending a new screen interface image signal. After the user "lifts the pen", it starts to receive the new screen interface image signal again.
  • the advantage of this setting is that within "one stroke", the image composition can be completed without waiting to receive a new screen interface image, thereby further reducing the writing delay time and improving the synchronization of the writing operation and display.
  • FIG. 2 is a schematic structural diagram of an intelligent interaction system provided in Embodiment 2 of the present application. Based on the above embodiment, this embodiment provides an optional intelligent interaction system.
  • the intelligent interaction system further includes: a touch switch 7.
  • the input terminal of the touch switch 7 is connected to the touch device 3.
  • the first output of the touch switch 7 is connected to the system main chip 1.
  • the second output of the touch switch 7 is connected to the touch signal.
  • the interface 22 is connected, and the touch switch 7 is set to switch between the first output terminal and the second output terminal according to the image composition instruction.
  • the touch device 3 may be a touch device provided in the smart interactive system, such as a touch screen in a touch display screen.
  • the first output terminal of the touch switch 7 can be set as the default conducting terminal, that is, when no touch switch instruction is received, the default touch device 3 is connected to the system main chip 1; when a touch is received, When the switching instruction is controlled, the touch device 3 is switched to be connected to the screen driving board 2.
  • the control terminal of the touch switch 7 is connected to the micro control unit 6.
  • the micro control unit 6 receives the software startup information of the target application software, it can generate a touch switch instruction and send it to the touch switch 7 to control the touch switch 3 to connect the touch device 3 and the system.
  • the main chip 1 is connected, and the touch device 3 is switched to be connected to the screen driving board 2.
  • the advantage of setting the touch switch 7 is that the touch device 3 can be reused, so that the track device can be used to collect the writing track signal directly, and the system main chip 1 is connected by default. While not affecting other normal operations of the touch device 3, it can also be switched to connect to the screen drive board 2 in time when the target application software is started, and then the collected writing track signals are sent directly to the screen drive board 2 in time to interface with the screen
  • the image is subjected to image synthesis processing to achieve the effect of reducing writing delay.
  • the working principle of the intelligent interaction system shown in FIG. 2 is described in detail through a specific example.
  • the system module 4 for example, an Android module or a PC module
  • the system main chip 1 detects that the target application software (for example, whiteboard software) installed in the system is started, the software startup information is generated, and the system switch 5 that is turned on is used to turn on
  • the software startup information is sent to the micro control unit 6; the micro control unit 6 forwards the software startup information to the screen drive board 2 through the communication interface 23, and generates a corresponding touch switch instruction to send to the touch switch 7 to make the touch
  • the conduction state of the switch 7 is switched from the default input terminal to the first output terminal, that is, the default touch device 3 is connected to the system main chip 1, and the input terminal is switched to the second output terminal, that is, switched.
  • the touch device 3 is connected to the screen driving board 2; the screen driving board 2 turns on and enters the image synthesis mode after receiving the software startup information, and in this image synthesis mode, it will be driven from the system main chip through the screen signal interface 21
  • the screen interface image received by 1 and the writing track received from the touch device 3 connected to it through the touch signal interface 22 are combined into a frame image for display.
  • the touch device by setting a touch switch, the touch device can be multiplexed and compatible with the connection methods in the related technology, and the target can be achieved without affecting the normal operation of the touch device.
  • the application software When the application software is started, it is switched to be connected to the screen drive board in time, and then the collected writing track signal is sent directly to the screen drive board in time to complete the image synthesis processing between the writing track signal and the screen interface image signal, which reduces the writing delay time. At the same time, it improves the compatibility of the system.
  • FIG. 3 is a schematic flowchart of a writing track display method provided in Embodiment 3 of the present application.
  • This method may be suitable for displaying a writing track, and the method may be executed by a writing track display device, which may be composed of hardware and / or software, and may generally be integrated in a smart interactive tablet and provided by any of the foregoing embodiments
  • the intelligent interactive system includes S310 to S330.
  • the screen driving board of the intelligent interactive system receives a screen interface image signal from a system main chip of the intelligent interactive system through a screen driving signal interface.
  • the screen interface image may be a screen displayed on a display screen in an intelligent interaction system.
  • the screen interface image signal may be sent by a system module (such as an Android module or a PC module) as an image signal source to the system main chip, or the system main chip itself may be used as an image signal source by the intelligent interactive system.
  • the operating system currently in use is determined.
  • the system main chip may be the main chip of the intelligent interactive system, for example, it may be a data processing chip of an intelligent interactive tablet, which may be configured to obtain the screen interface image signal on itself or other system modules and send it to the screen driving board.
  • the screen driver board can be a TCON main chip. The role of the TCON board is to process the screen interface image signals (including RGB data signals, clock signals, and control signals) sent by the system main chip 1 and convert them to drive liquid crystals.
  • the LVDS of the display screen sends the signal directly to the LVDS receiving chip of the LCD screen.
  • the drive screen signal interface can be an HDMI interface or other types of interfaces, which is not limited here.
  • the system main chip periodically sends the acquired image signals of the screen interface to the screen driving board, so as to provide conditions for the screen driving board to perform image synthesis in subsequent steps.
  • the screen driver board sends the received screen interface image signal to the display screen for normal signal conversion after normal signal conversion.
  • the screen driving board receives a writing track signal from a touch device through a touch signal interface.
  • the touch device in this embodiment may be a touch device provided in the smart interactive system, such as a touch screen in a touch display screen, or a touch device external to the smart interactive system, such as a tablet or a smart electronic pen.
  • the operation process is collected and recorded in data form, for example, the coordinate data of the touch point is collected at a preset frequency, and the writing trajectory signal is generated based on the coordinate data collected within a preset period of time, It is transmitted to the screen driving board through the touch signal interface.
  • the preset time period may be, for example, the time from when the touch point is detected to the time when the last touch point is detected, that is, the pen-down time to the pen-up time.
  • the touch signal interface may be a universal serial bus (Universal Serial Bus, USB) interface, and is configured to receive a writing track signal.
  • USB Universal Serial Bus
  • the screen driving board when it receives an image synthesis instruction, it enables a touch signal interface, and receives a writing track signal from a touch device through the touch signal interface.
  • the screen driving board receives the writing track signal when receiving the image synthesis instruction, and turns on the image synthesis mode at the same time.
  • the advantage is that the writing track can be prevented from being displayed incorrectly when the user uses the touch device for other operations.
  • the screen driving board receiving the image synthesis instruction includes: the screen driving board receives the software startup information of the target application software from the system main chip as the image synthesis instruction; or the screen driving board receives the target in the system module from the micro control unit through the communication interface.
  • the software startup information of the application software is used as an image composition instruction.
  • the target application software may be software having a writing function installed in a system main chip and / or a system module system, such as whiteboard software, drawing software, and the like.
  • An optional implementation manner of this embodiment is that, when the target application software is installed on the system main chip, when the target application software is started, software startup information may be generated as an image synthesis instruction and sent directly to the screen driver board.
  • the target application software is installed on a system module, and when the target application software is started, the generated software startup information may be sent to the micro control unit, which is then driven by the micro control unit through the screen.
  • the communication interface of the board is sent to the screen driver board.
  • the system modules are connected to the micro control unit through a system switch, and the micro control unit can switch the operating system by controlling the on and off of the system switch.
  • a touch switch in the intelligent interaction system which switches a touch device from a main chip connected to the system to a touch signal interface connected to a screen driving board according to an image synthesis instruction.
  • the touch device is a touch device provided in the intelligent interactive system, such as a touch screen in a touch screen
  • a function of the touch device can be multiplexed by setting a touch switch.
  • the micro control unit when the micro control unit receives the software startup information of the target application software, that is, the image synthesis instruction, it can generate a touch switch instruction and send it to the touch switch to control the touch switch to switch the touch device. It is connected to the system main chip, and it is switched to a touch device connected to the screen driving board.
  • the screen driving board synthesizes an image signal of the screen interface and a writing track signal for display.
  • the implementation of image synthesis of the screen interface image signal and the writing trajectory signal may be to draw the point coordinate data in the writing trajectory signal directly on the screen interface image according to the coordinates of each point, or it may be The trajectory map generated based on the point coordinate data in the writing trajectory signal and the screen interface image are directly superimposed.
  • the screen driving board receives the continuous writing track signal, that is, when the user moves from the "pen down” to the "pen lifting", the writing track is not displayed, and when the user "lifts the pen", the composite image is sent to The display screen displays the writing track.
  • the advantage of image synthesis by the screen driving board in this embodiment is that the synthesized image can be transmitted to the screen driving board without using the screen driving signal interface. , And then send it to the display screen for display, and then synthesize it by the screen driver board and send it directly to the display screen for display. Therefore, the writing delay time can be greatly reduced, and the synchronization between the writing operation and the display can be improved.
  • the screen driving board of the intelligent interactive system will perform the screen interface image signal received from the system main chip by using the screen driving signal interface and the writing track signal received from the touch device by using the touch signal interface
  • Image synthesis for display uses the advantages of image synthesis in the screen driver board to shorten the transmission time of the synthesized image, and achieves the effects of shortening the writing delay time and improving the synchronization of writing operations and display.
  • the system main chip further includes: The screen interface image of the target application software running locally is transmitted to the screen drive board; or the system main chip receives the screen interface image of the target application software running on the system module through the image transmission interface and transmits it to the screen drive board.
  • the signal source of the screen interface image signal may be a system main chip or a system module.
  • the system main chip can transmit the screen interface image of the locally running target application software to the screen driver board; if the target application software installed on the system module starts to run, The system main chip can receive the screen interface image of the target application software running on the system module through the image transmission interface, and then forward it to the screen driver board.
  • the method further includes: when the screen driving board determines to receive the writing track signal again within a preset time period. At the time, a pause command is generated and sent to the system main chip, and image synthesis is performed based on the currently buffered composite image and the writing track signal for display; wherein the pause command is used to instruct the system main chip to suspend sending the target application software to the screen driver board. Screen interface image.
  • a frame image is buffered for image synthesis with the received writing track signal.
  • the received pair of received track signals may be based on the currently buffered frame of the synthesized image.
  • the writing track signal is synthesized, and the screen driver board only needs to receive the writing track signal, so a pause command can be generated and sent to the system main chip, so that the system main chip suspends sending new image signals.
  • the user After the user "lifts the pen", that is, when the writing track signal is no longer received within a preset time period, the user starts to receive a new screen interface image signal again.
  • the advantage of this setting is that within "one stroke", the image composition can be completed without waiting to receive a new screen interface image, thereby further reducing the writing delay time and improving the synchronization of the writing operation and display.
  • FIG. 4 is a schematic structural diagram of a writing track display device according to a fourth embodiment of the present application.
  • the writing track display device includes an image receiving unit 410, a track receiving unit 420, and an image synthesizing unit 430. Each module is described below.
  • the image receiving unit 410 is configured to control a screen driving board of the intelligent interactive system, and receives a screen interface image signal from a system main chip of the intelligent interactive system through a screen driving signal interface;
  • the track receiving unit 420 is configured to control the screen driving board to receive a writing track signal from a touch device through a touch signal interface;
  • the image synthesizing unit 430 is configured to control the screen driving board to synthesize an image signal of the screen interface and the writing track signal for display.
  • the trajectory receiving unit 420 may include:
  • the screen driving board receiving the image composition instruction includes:
  • the screen driving board receives the software startup information of the target application software in the system module from the micro control unit through the communication interface as the image composition instruction.
  • Optional also includes:
  • Optional also includes:
  • the local image transmission unit is configured to control the screen driving board of the intelligent interactive system, and before receiving the screen interface image signal from the system main chip of the intelligent interactive system through the screen driving signal interface, the system main chip is controlled to target applications running locally
  • the screen image of the software is transmitted to the screen driving board; or the module image transmission unit is configured to control the screen driving board of the intelligent interactive system, and before receiving the screen interface image signal from the system main chip of the intelligent interactive system through the screen driving signal interface Controlling the system main chip to receive a screen interface image of a target application software running on a system module through an image transmission interface and transmitting the screen interface image to the screen driving board.
  • Optional also includes:
  • the instruction sending unit is configured to control the screen driving board to synthesize the screen interface image signal with the writing track signal, and after controlling the screen driving board to determine that the writing track signal is received again within a preset time period When a pause command is generated and sent to the system main chip, and image synthesis is performed based on the currently buffered composite image and the writing track signal for display;
  • the pause instruction is set to instruct the system main chip to suspend sending the screen interface image of the target application software to the screen driver board.
  • the above products can execute the method provided by any embodiment of the present application, and have the corresponding functional modules and effects of executing the method.
  • FIG. 5 is a schematic structural diagram of an intelligent interactive tablet provided in Embodiment 5 of the present application.
  • an intelligent interactive tablet provided in this embodiment includes a processor 51 and a memory 52. There may be one or more processors in the smart interactive tablet.
  • a processor 51 is taken as an example in FIG. 5.
  • the processor 51 and the memory 52 in the smart interactive tablet may be connected through a bus or other methods. Take the connection via a bus as an example.
  • the processor 51 of the smart interactive tablet in this embodiment integrates the writing track display device provided in the foregoing embodiment.
  • the memory 52 in the smart interactive tablet serves as a computer-readable storage medium, and may be configured to store one or more programs.
  • the programs may be software programs, computer-executable programs, and modules, as in the embodiments of the present application.
  • Program instructions / modules corresponding to the writing track display method include an image receiving unit 410, a track receiving unit 420, and an image synthesizing unit 430).
  • the processor 51 executes various functional applications and data processing of the device by running software programs, instructions, and modules stored in the memory 52, that is, implementing the writing track display method in the foregoing method embodiment.
  • the memory 52 may include a storage program area and a storage data area, where the storage program area may store an operating system and application programs required for at least one function; the storage data area may store data created according to the use of the device, and the like.
  • the memory 52 may include a high-speed random access memory, and may further include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage device.
  • the memory 52 may include memory remotely provided with respect to the processor 51, and these remote memories may be connected to the device through a network. Examples of the above network include the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.
  • the program when one or more programs included in the smart interactive tablet are executed by the one or more processors 51, the program performs the following operations:
  • the screen driving board of the intelligent interactive system receives a screen interface image signal from a system main chip of the intelligent interactive system through a screen driving signal interface; the screen driving board receives a writing track signal from a touch device through a touch signal interface; the screen The driving board performs image synthesis on the screen interface image signal and the writing track signal for display.
  • the sixth embodiment of the present application also provides a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program, and when the computer program is executed by the writing track display device, the writing track display provided in the third embodiment of the present application is displayed.
  • a method comprising: a screen driving board of an intelligent interactive system, receiving a screen interface image signal from a system main chip of the intelligent interactive system through a screen driving signal interface; and the screen driving board receiving writing from a touch device through a touch signal interface Track signal; the screen driving board image-combines the screen interface image signal with the writing track signal for display.
  • the computer-readable storage medium provided in the embodiments of the present application is not limited to the implementation of the method operations described above when the computer program stored thereon is executed, and can also realize the writing track display provided by any embodiment of the present application. Related operations in the method.
  • the present application may be implemented by software and general hardware, and may also be implemented by hardware.
  • the technical solution of this application is essentially in the form of a software product that contributes to related technologies.
  • the computer software product can be stored in a computer-readable storage medium, such as a computer's floppy disk, read-only memory (Read -Only Memory (ROM), Random Access Memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including multiple instructions to make a computer device (can be a personal computer, server, or network) Equipment, etc.) perform the method described in each embodiment of the present application.
  • the multiple units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, each functional unit
  • the names are only for the convenience of distinguishing from each other, and are not used to limit the protection scope of this application.

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Abstract

本申请实施例公开了一种智能交互***、书写轨迹显示方法、装置、平板及介质。所述***包括***主芯片和屏幕驱动板，所述屏幕驱动板设置有驱屏信号接口和触控信号接口，其中：所述驱屏信号接口设置为从所述***主芯片接收屏幕界面图像信号，所述触控信号接口设置为从触控设备接收书写轨迹信号；所述屏幕驱动板，设置为将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成，以用于显示。

Description

智能交互***、书写轨迹显示方法、装置、平板及介质
本申请要求在2018年08月15日提交中国专利局、申请号为201810928929.9的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及触控设备图像处理技术，例如涉及一种智能交互***、书写轨迹显示方法、装置、平板及介质。
背景技术
随着智能交互平板上使用触控功能进行书写操作的应用软件越来越多，对书写轨迹显示性能提出了更高的要求。
在相关技术的智能交互***中，一般包括***主芯片和屏幕驱动板，***主芯片设置为控制操作***等基础功能，屏幕驱动板设置为根据***主芯片输出的图像信号进行处理，形成屏显信号，以控制显示屏的显示画面。***主芯片一般会通过图像输入接口，例如高清晰度多媒体接口(High Definition Multimedia Interface，HDMI)，与外部***模块或内部***模块相连，接收***模块传输的屏幕界面图像，再通过图像输出接口(HDMI)，将***模块传输的屏幕界面图像或者本地***的屏幕界面图像输出至屏幕驱动板，以控制显示屏的显示画面。同时，为了丰富输入手段，相关技术中的智能交互***中，还会允许***主芯片连接手写板、触摸板等输入设备，接收用户触摸输入的信号。在***模块或***主芯片安装的白板软件中进行书写操作时，有些书写轨迹需要叠加到屏幕界面图像上，让显示屏一并显示。
在实现本申请的过程中，发现相关技术中至少存在如下问题。上述智能交互***在处理书写轨迹显示的时候，HDMI在传输图像时延迟时间通常在30ms以上，而屏幕界面图像和书写轨迹图像在***主芯片内合成后，还需通过***主芯片的HDMI输出接口发给屏幕驱动板处理并显示，所以出现了书写轨迹图像的显示相对于用户真实书写有所延迟的现象。
发明内容
本申请实施例提供一种智能交互***、书写轨迹显示方法、装置、平板及介质，以实现缩短书写延迟时间，提高书写操作与显示的同步性。
在一实施例中，本申请实施例提供了一种智能交互***，包括***主芯片 和屏幕驱动板，所述屏幕驱动板设置有驱屏信号接口和触控信号接口，其中：
所述驱屏信号接口设置为从所述***主芯片接收屏幕界面图像信号，所述触控信号接口设置为从触控设备接收书写轨迹信号；
所述屏幕驱动板，设置为将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成，以用于显示。
在一实施例中，本申请实施例还提供了一种书写轨迹显示方法，包括：
智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号；
所述屏幕驱动板通过触控信号接口从触控设备接收书写轨迹信号；
所述屏幕驱动板将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成，以用于显示。
在一实施例中，本申请实施例还提供了一种书写轨迹显示装置，该装置包括：
图像接收单元，设置为控制智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号；
轨迹接收单元，设置为控制所述屏幕驱动板通过触控信号接口从触控设备接收书写轨迹信号；
图像合成单元，设置为控制所述屏幕驱动板将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成，以用于显示。
，本申请实施例还提供了一种智能交互平板，该智能交互平板包括：
一个或多个处理器；
存储器，设置为存储一个或多个程序；
当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现本申请任一实施例所述的方法。
在一实施例中，本申请实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现本申请任一实施例所述的方法。
附图说明
图1a是本申请实施例一提供的一种智能交互***的结构示意图；
图1b是相关技术中智能交互***的结构示意图；
图2是本申请实施例二提供的一种智能交互***的结构示意图；
图3是本申请实施例三提供的一种书写轨迹显示方法的流程示意图；
图4是本申请实施例四提供的一种书写轨迹显示装置的结构示意图；
图5是本申请实施例五提供的一种智能交互平板的结构示意图。
具体实施方式
下面结合附图和实施例对本申请作进一步的详细说明。此处所描述的具体实施例仅仅用于解释本申请，而非对本申请的限定。为了便于描述，附图中仅示出了与本申请相关的部分而非全部结构。
实施例一
图1a为本申请实施例一提供的一种智能交互***的结构示意图。如图1a所示，该智能交互***包括：***主芯片1和屏幕驱动板2，下面对每个部分进行具体说明。
如图1a所示，屏幕驱动板2设置有驱屏信号接口21和触控信号接口22，其中：驱屏信号接口21设置为从***主芯片1接收屏幕界面图像信号，触控信号接口22设置为从触控设备3接收书写轨迹信号；屏幕驱动板2，设置为将屏幕界面图像信号与书写轨迹信号进行图像合成，以用于显示。
本实施例中***主芯片1可以是本智能交互***的主芯片，例如可以是智能交互平板的数据处理芯片，可设置为获取自身或其他***模块上的屏幕界面图像信号，并发送至屏幕驱动板2。屏幕驱动板2可以是定时器/计数器控制寄存器(Timer Control Register，TCON)主芯片，TCON板的作用是把***主芯片1送来的屏幕界面图像信号(包含红绿蓝(Red Green Blue，RGB)数据信号、时钟信号、控制信号三类信号)进行处理后，转换成能驱动液晶显示屏的低电压差分信号(Low-Voltage Differential Signaling，LVDS)，再将该信号直接送往液晶显示屏的LVDS接收芯片。本实施例中，屏幕驱动板2在进行信号转换之前先进行图像合成，例如将屏幕界面图像信号和书写轨迹信号合成为一帧图像，再对该图像进行信号转换。
示例性的，当用户在触控设备3上进行书写操作时，触控设备3将采集的书写轨迹通过屏幕驱动板2的触控信号接口22发送给屏幕驱动板2，与此同时，***主芯片1可通过屏幕驱动板2的驱屏信号接口21将将要在显示屏上显示的屏幕界面图像发送至屏幕驱动板2，屏幕驱动板2对屏幕界面图像以及书写轨迹进行图像合成后，将合成图像转换成显示屏支持的信号格式，以在转换后将合 成图像信号发送给显示屏进行显示。
可选的，屏幕驱动板2是设置为：在接收到图像合成指示时，启用触控信号接口22，并通过触控信号接口22从触控设备3接收书写轨迹信号。
屏幕驱动板2在接收到图像合成指示时再接收书写轨迹信号，同时开启图像合成模式，其好处在于，可以防止用户使用触控设备3进行其他操作时导致的书写轨迹误显示。
本实施例中，可选的，智能交互***还包括：触控设备3，触控设备3通过触控信号接口22与屏幕驱动板2相连，设置为采集书写轨迹信号，并将书写轨迹信号发送给屏幕驱动板2。其中，触控设备3可以是智能交互***中自带的触控设备，例如触摸显示屏中的触控屏，也可以是智能交互***外接的触控设备，例如手写板、智能电子笔等，通过检测用户的触摸、书写等操作，将操作过程用数据形式采集并记录下来，例如按照预设频率采集触摸点的坐标数据，根据预设时间段内采集到的坐标数据生成书写轨迹信号，并通过触控信号接口22传输给屏幕驱动板2，其中，预设时间段例如可以是开始检测到触摸点的时间到最后一次检测到触摸点的时间，也即落笔时间到抬笔时间。
可选的，图像合成指示为从***主芯片1传输的目标应用软件的软件启动信息；或所述图像合成指示为屏幕驱动板2的通信接口23，从微控制单元6接收的***模块中目标应用软件的软件启动信息。
其中，目标应用软件可以是具有书写功能的软件，例如白板软件、绘画软件等。
本实施例的一种可选实施方式为，目标应用软件安装在***主芯片上，则当目标应用软件启动时，可生成软件启动信息作为图像合成指示，直接发送给屏幕驱动板。例如，如图1a所示，当安装在***主芯片1上的白板软件启动时，将生成的软件启动性信息发送给微控制单元6，再由微控制单元6通过屏幕驱动板2的通信接口23发送给屏幕驱动板2。
本实施例的另一种可选实施方式为，目标应用软件安装于***模块4上，其中，可选的，智能交互***还包括内接或外接的其他***模块4，***主芯片1通过图像传输接口11与***模块4相连，是设置为接收***模块4上运行的目标应用软件的屏幕界面图像。其中，图像传输接口11例如可以是HDMI接口。如图1a所示，***主芯片1通过图像传输接口11分别与两个***模块4相连，其中，两个***模块4中运行的操作***的类型可以不一致，例如一个***模块上运行的***可以是windows***，另一个***模块上运行的***可以是Android***等。两个***模块4通过***切换开关5连接至微控制单元6，微 控制单元6可通过控制***切换开关5的通断进行操作***的切换，例如，连接一个***模块即可切换为windows***；或者连接另一个***模块即可切换为Android***；或者切断与二者的连接，即可切换为智能交互平板本身的***。可选的，***主芯片1、和两个***模块4中至少有一个模块或芯片中安装有目标应用软件(例如白板软件)。在本可选实施方式中，安装在***模块4中的白板软件启动时，可将生成的软件启动信息通过导通的***切换开关5发送至微控制单元6，再由微控制单元6通过屏幕驱动板2的通信接口23发送给屏幕驱动板2。
在如图1b所示的相关技术中，由于***模块4d均是通过***主芯片1d的图像传输接口11d连接的，且***主芯片1d将目标应用软件所在的***主芯片或***模块的屏幕界面图像，与触控设备3d采集的书写轨迹进行图像合成后，通过驱屏信号接口21d将合成图像发送至屏幕驱动板2d，以进行图像处理后显示。而图像传输接口11d与驱屏信号接口21d均为HDMI接口，图像传输延迟时间长，这就导致触控设备3d采集书写轨迹的时间与书写轨迹最终的显示时间间隔受到图像传输接口11d与驱屏信号接口21d的图像传输延迟的影响，使得书写轨迹图像的显示相对于用户真实书写的延迟达到30ms以上，延迟时间较长。
相较于相关技术，本实施例中采用如图1a所示的智能交互***，由于将图像合成过程由***主芯片1转移至屏幕驱动板2中进行，使得合成后的图像无需再通过驱屏信号接口21进行传输，而是由屏幕驱动板2直接发送至显示屏进行显示。因此，可大大缩短书写延迟时间，提高书写操作与显示的同步性。
下面通过一个具体例子，对如图1a所示的智能交互***的工作原理进行详细描述。当***模块4(例如安卓模块或个人电脑(Personal Computer，PC)模块)或***主芯片1检测到自身***中安装的目标应用软件(例如白板软件)启动时，生成软件启动信息，并通过导通的***切换开关5将软件启动信息发送给微控制单元6；微控制单元6将该软件启动信息通过通信接口23转发给屏幕驱动板2；屏幕驱动板2在接收到该软件启动信息后开启并进入图像合成模式，并在该图像合成模式下，将通过驱屏信号接口21从***主芯片1接收的屏幕界面图像，以及通过触控信号接口22从与之相连的触控设备3(例如手写板)接收的书写轨迹，合成为一帧图像进行显示。其中，屏幕界面图像为需要在显示屏中显示的屏幕界面图像，例如，若目标应用软件安装在***模块4的***中，则***模块4将需要显示的屏幕界面图像发送至***主芯片1，再由***主芯片1通过驱屏信号接口21发送至屏幕驱动板2；若目标应用软件安装在***主芯片1的***中，则***主芯片1通过驱屏信号接口21直接将屏幕界面图像发送至屏幕驱动板2。
本实施例的技术方案，通过在智能交互***中的屏幕驱动板上设置驱屏信号接口和触控信号接口，利用屏幕驱动板，将从驱屏信号接口接收的屏幕界面图像信号，以及从触控信号接口接收的书写轨迹信号，进行图像合成，以用于显示，由于将原本在***主芯片中进行的图像合成过程转移至屏幕驱动板中进行，使得对合成后的图像进行显示的过程不再受到HDMI输出接口延迟的影响，解决了相关技术中由于图像合成过程在***主芯片中完成后还需通过HDMI输出接口发送给屏幕驱动板进行处理才能显示出来，而导致的书写轨迹图像的显示相对于用户真实书写有所延迟的问题，实现了缩短书写延迟时间，提高书写操作与显示的同步性的效果。
在上述实施例的基础上，如图1a所示，屏幕驱动板2还设置有指令发送接口24，设置为与***主芯片1相连，屏幕驱动板2在持续接收书写轨迹信号期间，可基于当前缓存的一帧合成图像对接收到的书写轨迹信号进行图像合成，屏幕驱动板2仅要接收书写轨迹信号即可，此时，屏幕驱动板2可生成暂停指令，通过指令发送接口24发送给***主芯片1，以使***主芯片1暂停发送新的屏幕界面图像信号。当用户“抬笔”后，再重新开始接收新的屏幕界面图像信号。这样设置的好处在于，在“一笔”之内，可以无需等待接收新的屏幕界面图像，即可完成图像合成，从而进一步缩短书写延迟时间，提高书写操作与显示的同步性。
实施例二
图2为本申请实施例二提供的一种智能交互***的结构示意图。本实施例以上述实施例为基础，提供了可选的智能交互***，智能交互***还包括：触控切换开关7。
其中，触控切换开关7的输入端设置为与触控设备3相连，触控切换开关7的第一输出端与***主芯片1相连，触控切换开关7的第二输出端与触控信号接口22相连，触控切换开关7，设置为根据图像合成指示在第一输出端和第二输出端之间进行切换。
本实施例中，触控设备3可以为智能交互***中自带的触控设备，例如触摸显示屏中的触控屏。可选的，可将触控切换开关7的第一输出端设置为默认导通端，即当没有收到触控切换指令时，默认触控设备3与***主芯片1相连；当接收到触控切换指令时，触控设备3切换为与屏幕驱动板2相连。其中，触控切换开关7的控制端与微控制单元6相连。示例性的，当微控制单元6接收到目标应用软件的软件启动信息时，可生成触控切换指令，并发送给触控切换开关7，以控制触控切换开关7将触控设备3与***主芯片1相连，切换为触控 设备3与屏幕驱动板2相连。
设置触控切换开关7的好处在于，可对触控设备3进行复用，从而直接利用智能交互平板中自带的触控设备来完成书写轨迹信号的采集，实现在默认连接***主芯片1，进而不影响触控设备3其他正常操作的同时，还能在目标应用软件启动时及时切换为连接屏幕驱动板2，进而及时将采集的书写轨迹信号直接发送给屏幕驱动板2，以与屏幕界面图像进行图像合成处理，达到降低书写延迟的效果。
下面通过一个具体例子，对如图2所示的智能交互***的工作原理进行详细描述。当***模块4(例如安卓模块或PC模块)或***主芯片1检测到自身***中安装的目标应用软件(例如白板软件)启动时，生成软件启动信息，并通过导通的***切换开关5将软件启动信息发送给微控制单元6；微控制单元6将该软件启动信息通过通信接口23转发给屏幕驱动板2，并生成相应的触控切换指令发送给触控切换开关7，以使得触控切换开关7的导通状态由默认的输入端与第一输出端导通，也即默认的触控设备3与***主芯片1相连，切换为输入端与第二输出端导通，也即切换为触控设备3与屏幕驱动板2相连；屏幕驱动板2在接收到该软件启动信息后开启并进入图像合成模式，并在该图像合成模式下，将通过驱屏信号接口21从***主芯片1接收的屏幕界面图像，以及通过触控信号接口22从与之相连的触控设备3接收的书写轨迹，合成为一帧图像进行显示。
本申请实施例的技术方案，通过设置触控切换开关，使得触控设备能够进行复用，兼容相关技术中的连接方式，实现了在不影响触控设备其他正常操作的同时，还能在目标应用软件启动时及时切换为与屏幕驱动板相连，进而及时将采集的书写轨迹信号直接发送给屏幕驱动板，以完成书写轨迹信号与屏幕界面图像信号之间的图像合成处理，在降低书写延迟时间的同时，提高了***的兼容性。
实施例三
图3为本申请实施例三提供的一种书写轨迹显示方法的流程示意图。该方法可适用于对书写轨迹进行显示的情况，该方法可以由书写轨迹显示装置来执行，该装置可由硬件和/或软件组成，并一般可集成在智能交互平板以及上述任一实施例所提供的智能交互***中，包括S310至S330。
S310、智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号。
其中，屏幕界面图像可以是智能交互***中在显示屏上进行显示的画面。可选的，该屏幕界面图像信号可以是由***模块(例如安卓模块或PC模块)作为图像信号源，发送给***主芯片，也可以是***主芯片自身作为图像信号源，由智能交互***中当前使用的操作***决定。
***主芯片可以是本智能交互***的主芯片，例如可以是智能交互平板的数据处理芯片，可设置为获取自身或其他***模块上的屏幕界面图像信号，并发送至屏幕驱动板。屏幕驱动板可以是TCON主芯片，TCON板的作用是把***主芯片1送来的屏幕界面图像信号(包含RGB数据信号、时钟信号、控制信号三类信号)进行处理后，转换成能驱动液晶显示屏的LVDS，再将该信号直接送往液晶显示屏的LVDS接收芯片。驱屏信号接口可以是HDMI接口，也可以是其他类型接口，在此不作限定。
示例性的，***主芯片周期性地将获取的屏幕界面图像信号发送至屏幕驱动板，为后续步骤中屏幕驱动板进行图像合成提供条件。当无需进行图像合成时，屏幕驱动板将接收的屏幕界面图像信号进行正常的信号转换后发送至显示屏，以进行显示。
S320、屏幕驱动板通过触控信号接口从触控设备接收书写轨迹信号。
本实施例中触控设备可以是智能交互***中自带的触控设备，例如触摸显示屏中的触控屏，也可以是智能交互***外接的触控设备，例如手写板、智能电子笔等，通过检测用户的触摸、书写等操作，将操作过程用数据形式采集并记录下来，例如按照预设频率采集触摸点的坐标数据，根据预设时间段内采集到的坐标数据生成书写轨迹信号，并通过触控信号接口传输给屏幕驱动板，其中，预设时间段例如可以是开始检测到触摸点的时间到最后一次检测到触摸点的时间，也即落笔时间到抬笔时间。触控信号接口可以是通用串行总线(Universal Serial Bus，USB)接口，设置为接收书写轨迹信号。
可选的，屏幕驱动板在接收到图像合成指示时，启用触控信号接口，并通过所述触控信号接口从触控设备接收书写轨迹信号。
屏幕驱动板在接收到图像合成指示时再接收书写轨迹信号，同时开启图像合成模式，其好处在于，可以防止用户使用触控设备进行其他操作时导致的书写轨迹误显示。
可选的，屏幕驱动板接收图像合成指示包括：屏幕驱动板从***主芯片接收目标应用软件的软件启动信息，作为图像合成指示；或屏幕驱动板通过通信接口从微控制单元接收***模块中目标应用软件的软件启动信息，作为图像合成指示。
其中，目标应用软件可以是安装在***主芯片和/或***模块的***中具有书写功能的软件，例如白板软件、绘画软件等。
本实施例的一种可选实施方式为，目标应用软件安装在***主芯片上，则当目标应用软件启动时，可生成软件启动信息作为图像合成指示，直接发送给屏幕驱动板。
本实施例的另一种可选实施方式为，目标应用软件安装于***模块上，当目标应用软件启动时，可将生成的软件启动信息发送至微控制单元，再由微控制单元通过屏幕驱动板的通信接口发送给屏幕驱动板。其中，当存在多个***模块时，***模块之间通过***切换开关连接至微控制单元，微控制单元可通过控制***切换开关的通断进行操作***的切换。
可选的，还包括：智能交互***中的触控切换开关，根据图像合成指示，将触控设备，从连接到***主芯片切换至连接到屏幕驱动板的触控信号接口。
示例性的，当触控设备为智能交互***中自带的触控设备，例如触摸显示屏中的触控屏时，可通过设置一触控切换开关实现触控设备的功能复用，在一实施例中，当微控制单元接收到目标应用软件的软件启动信息，也即图像合成指示时，可生成触控切换指令，并发送给触控切换开关，以控制触控切换开关将触控设备与***主芯片相连，切换为触控设备与屏幕驱动板相连。
S330、屏幕驱动板将屏幕界面图像信号与书写轨迹信号进行图像合成，以用于显示。
示例性的，将屏幕界面图像信号和书写轨迹信号进行图像合成的实施方式可以是将书写轨迹信号中的点坐标数据直接按照每个点的坐标进行描点的方式绘制在屏幕界面图像上，也可以是将根据书写轨迹信号中的点坐标数据生成的轨迹图与屏幕界面图像直接进行叠加。可选的，在屏幕驱动板接收连续的书写轨迹信号期间，也即当用户从“落笔”到“抬笔”期间，不对书写轨迹进行显示，当用户“抬笔”后，将合成图像发送至显示屏，从而对书写轨迹进行显示。
相较于相关技术中通过***主芯片进行图像合成的方案，本实施例中通过屏幕驱动板进行图像合成的好处在于，可以使合成后的图像无需再通过驱屏信号接口传输至屏幕驱动板后，再发送给显示屏显示，而由屏幕驱动板合成后直接发送至显示屏进行显示。因此，可大大缩短书写延迟时间，提高书写操作与显示的同步性。
本实施例的技术方案，通过智能交互***的屏幕驱动板将利用驱屏信号接口从***主芯片中接收的屏幕界面图像信号，与利用触控信号接口从触控设备接收的书写轨迹信号，进行图像合成，以用于显示，利用了在屏幕驱动板中进 行图像合成可以缩短合成图像传输时间的优点，实现了缩短书写延迟时间，提高书写操作与显示的同步性的效果。
在上述实施例的基础上，可选的，在智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号之前，还包括：***主芯片，将本地运行的目标应用软件的屏幕界面图像传输给屏幕驱动板；或***主芯片，通过图像传输接口接收***模块上运行的目标应用软件的屏幕界面图像，并传输给屏幕驱动板。
示例性的，当智能交互***中内接或外接有其他***模块时，屏幕界面图像信号的信号源可以为***主芯片，也可以为***模块。例如，若***主芯片上安装的目标应用软件启动运行时，可由***主芯片将本地运行的目标应用软件的屏幕界面图像传输给屏幕驱动板；若***模块上安装的目标应用软件启动运行时，***主芯片可先通过图像传输接口接收***模块上运行的目标应用软件的屏幕界面图像，再转发至屏幕驱动板。
在上述实施例的基础上，可选的，在屏幕驱动板将屏幕界面图像信号与书写轨迹信号进行图像合成之后，还包括：当屏幕驱动板确定在预设时间段内再次接收到书写轨迹信号时，生成暂停指令发送给***主芯片，并基于当前缓存的合成图像以及书写轨迹信号进行图像合成，以用于显示；其中，暂停指令用于指示***主芯片暂停向屏幕驱动板发送目标应用软件的屏幕界面图像。
示例性的，在屏幕驱动板进行图像合成之前，缓存一帧图像，以用于与接收的书写轨迹信号进行图像合成。在一实施例中，在图像合成过程中持续接收书写轨迹信号期间，也即在合成图像之后预设时间段内再次接收到书写轨迹信号时，可基于当前缓存的一帧合成图像对接收到的书写轨迹信号进行合成，屏幕驱动板仅要接收书写轨迹信号即可，因此可生成暂停指令发送给***主芯片，以使***主芯片暂停发送新的图像信号。当用户“抬笔”后，也即在预设时间段内不再接收到书写轨迹信号时，再重新开始接收新的屏幕界面图像信号。这样设置的好处在于，在“一笔”之内，可以无需等待接收新的屏幕界面图像，即可完成图像合成，从而进一步缩短书写延迟时间，提高书写操作与显示的同步性。
实施例四
图4为本申请实施例四提供的一种书写轨迹显示装置的结构示意图。参考图4，书写轨迹显示装置包括：图像接收单元410、轨迹接收单元420以及图像合成单元430，下面对每个模块进行说明。
图像接收单元410，设置为控制智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号；
轨迹接收单元420，设置为控制所述屏幕驱动板通过触控信号接口从触控设备接收书写轨迹信号；
图像合成单元430，设置为控制所述屏幕驱动板将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成，以用于显示。
可选的，轨迹接收单元420可以包括：
控制所述屏幕驱动板在接收到图像合成指示时，启用所述触控信号接口，并通过所述触控信号接口从触控设备接收书写轨迹信号。
可选的，所述屏幕驱动板接收图像合成指示包括：
所述屏幕驱动板从所述***主芯片接收目标应用软件的软件启动信息，作为所述图像合成指示；或
所述屏幕驱动板通过通信接口从微控制单元接收***模块中目标应用软件的软件启动信息，作为所述图像合成指示。
可选的，还包括：
控制所述智能交互***中的触控切换开关，根据所述图像合成指示，将所述触控设备，从连接到***主芯片切换至连接到所述屏幕驱动板的触控信号接口。
可选的，还包括：
本地图像传输单元，设置为控制智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号之前，控制所述***主芯片，将本地运行的目标应用软件的屏幕界面图像传输给所述屏幕驱动板；或模块图像传输单元，设置为控制智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号之前，控制所述***主芯片，通过图像传输接口接收***模块上运行的目标应用软件的屏幕界面图像，并传输给所述屏幕驱动板。
可选的，还包括：
指令发送单元，设置为控制所述屏幕驱动板将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成之后，当控制所述屏幕驱动板确定在预设时间段内再次接收到书写轨迹信号时，生成暂停指令发送给所述***主芯片，并基于当前缓存的合成图像以及所述书写轨迹信号进行图像合成，以用于显示；
其中，所述暂停指令设置为指示所述***主芯片暂停向所述屏幕驱动板发 送所述目标应用软件的屏幕界面图像。
上述产品可执行本申请任意实施例所提供的方法，具备执行方法相应的功能模块和效果。
实施例五
图5为本申请实施例五提供的一种智能交互平板的结构示意图，如图5所示，本实施例提供的一种智能交互平板，包括：处理器51和存储器52。该智能交互平板中的处理器可以是一个或多个，图5中以一个处理器51为例，所述智能交互平板中的处理器51和存储器52可以通过总线或其他方式连接，图5中以通过总线连接为例。
本实施例中智能交互平板的处理器51中集成了上述实施例提供的书写轨迹显示装置。此外，该智能交互平板中的存储器52作为一种计算机可读存储介质，可设置为存储一个或多个程序，所述程序可以是软件程序、计算机可执行程序以及模块，如本申请实施例中书写轨迹显示方法对应的程序指令/模块(例如，附图4所示的书写轨迹显示装置中的模块，包括：图像接收单元410、轨迹接收单元420以及图像合成单元430)。处理器51通过运行存储在存储器52中的软件程序、指令以及模块，从而执行设备的多种功能应用以及数据处理，即实现上述方法实施例中的书写轨迹显示方法。
存储器52可包括存储程序区和存储数据区，其中，存储程序区可存储操作***、至少一个功能所需的应用程序；存储数据区可存储根据设备的使用所创建的数据等。此外，存储器52可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器52可包括相对于处理器51远程设置的存储器，这些远程存储器可以通过网络连接至设备。上述网络的实例包括互联网、企业内部网、局域网、移动通信网及其组合。
并且，当上述智能交互平板所包括一个或者多个程序被所述一个或者多个处理器51执行时，程序进行如下操作：
智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号；所述屏幕驱动板通过触控信号接口从触控设备接收书写轨迹信号；所述屏幕驱动板将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成，以用于显示。
实施例六
本申请实施例六还提供了一种计算机可读存储介质，该计算机可读存储介质上存储有计算机程序，该计算机程序被书写轨迹显示装置执行时实现如本申请实施例三提供的书写轨迹显示方法，该方法包括：智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号；所述屏幕驱动板通过触控信号接口从触控设备接收书写轨迹信号；所述屏幕驱动板将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成，以用于显示。
当然,本申请实施例所提供的一种计算机可读存储介质,其上存储的计算机程序被执行时不限于实现如上所述的方法操作,还可以实现本申请任意实施例所提供的书写轨迹显示方法中的相关操作。
通过以上关于实施方式的描述，本申请可借助软件及通用硬件来实现，也可以通过硬件实现。本申请的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在计算机可读存储介质中，如计算机的软盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、闪存(FLASH)、硬盘或光盘等，包括多个指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请每个实施例所述的方法。
上述书写轨迹显示装置的实施例中，所包括的多个单元和模块只是按照功能逻辑进行划分的，但并不局限于上述的划分，只要能够实现相应的功能即可；另外，每个功能单元的名称也只是为了便于相互区分，并不用于限制本申请的保护范围。

Claims (15)

  1. 一种智能交互***，包括***主芯片和屏幕驱动板，所述屏幕驱动板设置有驱屏信号接口和触控信号接口，其中：
    所述驱屏信号接口设置为从所述***主芯片接收屏幕界面图像信号，所述触控信号接口设置为从触控设备接收书写轨迹信号；
    所述屏幕驱动板，设置为将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成，以用于显示。
  2. 根据权利要求1所述的***，其中，所述屏幕驱动板是设置为：
    在接收到图像合成指示的情况下，启用所述触控信号接口，并通过所述触控信号接口从所述触控设备接收所述书写轨迹信号。
  3. 根据权利要求2所述的***，其中：
    所述图像合成指示为从所述***主芯片传输的目标应用软件的软件启动信息；或者，
    所述图像合成指示为所述屏幕驱动板的通信接口，从微控制单元接收的***模块中目标应用软件的软件启动信息。
  4. 根据权利要求2所述的***，还包括：
    触控切换开关，所述触控切换开关的输入端与所述触控设备相连，所述触控切换开关的第一输出端与所述***主芯片相连，所述触控切换开关的第二输出端与所述触控信号接口相连，所述触控切换开关，设置为根据所述图像合成指示在所述第一输出端和所述第二输出端之间进行切换。
  5. 根据权利要求1-4任一项所述的***，还包括：
    所述***主芯片通过图像传输接口与***模块相连，设置为接收所述***模块上运行的所述目标应用软件的屏幕界面图像。
  6. 根据权利要求1-4任一项所述的***，还包括：触控设备，所述触控设备通过所述触控信号接口与所述屏幕驱动板相连，设置为采集所述书写轨迹信号，并将所述书写轨迹信号发送给所述屏幕驱动板。
  7. 一种书写轨迹显示方法，包括：
    智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号；
    所述屏幕驱动板通过触控信号接口从触控设备接收书写轨迹信号；
    所述屏幕驱动板将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成，以用于显示。
  8. 根据权利要求7所述的方法，其中，所述屏幕驱动板通过触控信号接口从触控设备接收书写轨迹信号，包括：
    所述屏幕驱动板在接收到图像合成指示的情况下，启用所述触控信号接口，并通过所述触控信号接口从所述触控设备接收所述书写轨迹信号。
  9. 根据权利要求8所述的方法，其中，所述屏幕驱动板接收图像合成指示包括：
    所述屏幕驱动板从所述***主芯片接收目标应用软件的软件启动信息，作为所述图像合成指示；或者，
    所述屏幕驱动板通过通信接口从微控制单元接收***模块中目标应用软件的软件启动信息，作为所述图像合成指示。
  10. 根据权利要求8所述的方法，还包括：
    所述智能交互***中的触控切换开关，根据所述图像合成指示，将所述触控设备，从连接到***主芯片切换至连接到所述屏幕驱动板的触控信号接口。
  11. 根据权利要求7-10任一项所述的方法，在所述智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号之前，还包括：
    所述***主芯片，将本地运行的目标应用软件的屏幕界面图像传输给所述屏幕驱动板；或
    所述***主芯片，通过图像传输接口接收***模块上运行的目标应用软件的屏幕界面图像，并传输给所述屏幕驱动板。
  12. 根据权利要求7-10任一项所述的方法，在所述屏幕驱动板将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成之后，还包括：
    在所述屏幕驱动板确定在预设时间段内再次接收到书写轨迹信号的情况下，生成暂停指令，并将所述暂停指令发送给所述***主芯片，并基于当前缓存的合成图像以及所述书写轨迹信号进行图像合成，以用于显示；
    其中，所述暂停指令用于指示所述***主芯片暂停向所述屏幕驱动板发送所述目标应用软件的屏幕界面图像。
  13. 一种书写轨迹显示装置，包括：
    图像接收单元，设置为控制智能交互***的屏幕驱动板，通过驱屏信号接口从智能交互***的***主芯片中接收屏幕界面图像信号；
    轨迹接收单元，设置为控制所述屏幕驱动板通过触控信号接口从触控设备 接收书写轨迹信号；
    图像合成单元，设置为控制所述屏幕驱动板将所述屏幕界面图像信号与所述书写轨迹信号进行图像合成，以用于显示。
  14. 一种智能交互平板，包括：
    一个或多个处理器；
    存储器，设置为存储一个或多个程序；
    所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如权利要求7-12中任一项所述的方法。
  15. 一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求7-12中任一项所述的方法。
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