Multi-screen cooperative intelligent tablet mainboard connection circuit system

Abstract

The utility model relates to the technical field of intelligent tablet computers, and discloses a multi-screen collaborative intelligent tablet computer mainboard connection circuit system. Comprising a graphics processor, a display interface module, a wireless communication module, a touch screen control module, a sound effect processing module, a camera interface module, a central processing unit and a power management module, wherein the graphics processor is used for accelerating graphics rendering, video decoding and multi-screen output; the wireless communication module is used for realizing wireless screen projection among equipment, cloud service synchronization and remote control; through the design of a graphics processor and a camera interface module, high-speed sampling is realized through a pixel clock, a signal is synchronized to output complete frame data, the graphics processor is used for processing original data in real time, and a processed video stream is synchronously shared to other tablet equipment in a wireless communication mode; a picture is synchronized to other tablet devices through the wireless communication module, remote control is achieved, picture parameters are directly influenced by touch operation on the expansion screen, and rendering of touch feedback is accelerated through the graphics processor.

Description

TECHNICAL FIELD

[0001] The utility model relates to intelligent panel technical field, concretely is multi -screen cooperation intelligent panel mainboard connection circuit system. BACKGROUND

[0002] Intelligent panel is a kind of portable electronic equipment, with touch screen as basic input interface, carries open operating system, has storage memory function, and multi -screen cooperation intelligent panel is a kind of intelligent panel device with multi -screen cooperation function, it allows user to realize information sharing, linkage operation and picture synchronization function between different devices.

[0003] Through the search, the patent with application No. CN202020685738.7 discloses a kind of 5G intelligent panel computer multi-screen cooperation management equipment, it is related to tablet computer technical field.The utility model's structure includes, tablet computer, tablet computer structure includes tablet computer main body, vice screen support plate and back plate, the front side of the tablet computer main body is equipped with main screen rear side installation central processing unit, the vice screen support plate is provided with vice screen, the vice screen support plate is connected with the tablet computer main body by connecting shaft, the left end of the back plate is connected with the left end of vice screen support plate by connecting shaft;Multi-screen cooperation management module, multi-screen cooperation management module structure includes television and computer, television and computer are all provided with multi-screen application module, data communication module and multi-screen cooperation server, the television is connected with the multi-screen cooperation client of main screen by wireless communication module, the computer is connected with the multi-screen cooperation client of vice screen by wireless communication module.The utility model adopts double screen structure, can make tablet computer visit multiple client.

[0004] Current multi-screen cooperation intelligent panel adopts separation type CPU / GPU architecture, and due to bus bandwidth limitation and redundant data transmission, there is bottleneck in graphic rendering and logic operation, especially prone to lag when multi-screen 4K output, multi-screen interaction scheme relying on Bluetooth or special cable has delay (>100ms) and cost problem, and only supports simple mirror function, so we need to propose multi-screen cooperation intelligent panel mainboard connection circuit system. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing multi-screen cooperation intelligent panel mainboard connection circuit system, through the design of graphic processor and camera interface module, high-speed sampling is realized through pixel clock, complete frame data is outputted synchronously, raw data is processed in real time by graphic processor, and processed video stream is shared synchronously to other tablet devices by wireless communication mode;Picture is synchronized to other tablet devices by wireless communication module, remote control is realized, and picture parameters are directly affected by touch operation on expansion screen, and touch feedback is accelerated by graphic processor, to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: multi screen cooperation intelligent panel mainboard connection circuit system, including,

[0007] The central processor is responsible for multi-task scheduling, application program execution and coordination of each hardware module;

[0008] The graphic processor is used for accelerating graphic rendering, video decoding and multi-screen output;

[0009] The display interface module is used for transmitting the image signal output by the graphic processor to the external screen;

[0010] The power management module dynamically adjusts voltage and current and supplies power for other modules;

[0011] The wireless communication module realizes wireless screen projection between devices, cloud service synchronization and remote control;

[0012] The touch screen control module supports multi-point touch and gesture recognition;

[0013] The audio processing module is used for processing audio codec;

[0014] The camera interface module is used for transmitting video stream to the graphic processor;

[0015] The graphic processor, the display interface module, the wireless communication module, the touch screen control module, the audio processing module and the camera interface module are electrically connected with the central processor and the power management module, and the graphic processor is electrically connected with the audio processing module.

[0016] Preferably, the graphic processor includes a chip U52, a capacitor C367 is connected between pin 1 and pin 16 of the chip U52, a capacitor C379 is connected to pin 2 of the chip U52, a capacitor C382 is connected to pin 3 of the chip U52, a resistor R282 and a resistor R283 are connected in series between the capacitor C379 and the capacitor C382, a resistor R227 and an inductor L49 are connected in parallel at the connection end of the capacitor C379 and the resistor R282, and a capacitor C366 and a capacitor C368 are connected in parallel between pin 12 and pin 13 of the chip U52.

[0017] Preferably, the display interface module includes a chip U9, a display screen LCD and a triode T1, pin 1 of the triode T1 is connected to pin 18 of the display screen LCD, pin 2 of the triode T1 is respectively connected with a resistor R8 and a resistor R9, and the resistor R8 is connected to pin 3 of the chip U9.

[0018] Preferably, the wireless communication module comprises a chip U2, a MOS tube Q1 and a MOS tube Q2, the pin 1 of the chip U2 is connected with a resistor R2, the pin 3 of the chip U2 is connected with a resistor RN2C, the pin 6 of the chip U2 is connected with a resistor R3 and a light emitting diode LED Blue arranged in series, the pin 7 of the chip U2 is connected with a resistor RN2B and a capacitor C5 respectively, the pin 11 of the chip U2 is connected with a resistor RN2D, the pin 12 of the chip U2 is connected with a switch S1, and the pin 3 of the switch S1 is connected with a resistor RN2A.

[0019] The resistor RN1C is connected between the gate and the source of the MOS tube Q1, the resistor RN1A is connected to the drain of the MOS tube Q1, and the source of the MOS tube Q1 is connected to the pin 15 of the chip U2; the resistor RN1D is connected between the gate and the source of the MOS tube Q2, the resistor RN1B is connected to the drain of the MOS tube Q2, and the source of the MOS tube Q2 is connected to the pin 16 of the chip U2.

[0020] Preferably, the touch screen control module comprises a connector P3 and a chip U5 connected electrically, and a connector P4 and a chip U8 connected electrically, the resistor R20 and the resistor R21 are connected between the pin 9 and the pin 10 of the chip U5, and the capacitor C29 and the capacitor C40 arranged in parallel are connected to the connecting terminals of the resistor R20 and the resistor R21; the inductor L5 is connected between the pin 1 and the pin 6 of the chip U8, and the diode D8 is connected to the pin 1 of the chip U8.

[0021] Preferably, the sound effect processing module comprises a chip U12, a connector J10, a connector J20 and a connector J30, the resistor R27 and the capacitor C70 are connected between the pin 2 of the connector J10 and the pin 19 of the chip U12, the resistor R30 and the capacitor C69 are connected between the pin 1 of the connector J10 and the pin 20 of the chip U12, the resistor R33 and the capacitor C71 are connected between the pin 18 of the chip U12 and the pin 1 of the connector J20, the capacitor C74 is connected between the pin 9 of the chip U12 and the pin 1 of the connector J30, and the capacitor C75 is connected between the pin 10 of the chip U12 and the pin 2 of the connector J30.

[0022] Preferably, the camera interface module comprises a connector P2 and resistors R110 and R111 arranged in parallel, the capacitor C100 is connected between the pin 1 and the pin 2 of the connector P2, the resistor R110 is connected to the pin 4 of the connector P2, and the resistor R111 is connected to the pin 6 of the connector P2.

[0023] Compared with the prior art, the utility model has the advantages that:

[0024] 1. The utility model discloses a graphic processor, camera interface module's design is through the pixel clock realization high -speed sampling, synchronous signal output complete frame data, utilize graphic processor to raw data real -time processing, and the video stream after processing is shared to other tablet computer on the mode of wireless communication synchronously,

[0025] 2. The utility model discloses a wireless communication module and synchronizes the picture to other tablet computer, realizes remote control, and the picture parameter is directly influenced in the extension screen touch control operation, and through graphic processor accelerates rendering touch feedback. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the circuit diagram of the utility model graphic processor;

[0027] Figure 2 It is the circuit diagram of the utility model display interface module;

[0028] Figure 3 It is the circuit diagram of the utility model wireless communication module;

[0029] Figure 4 It is the circuit diagram of the utility model touch -control screen control module;

[0030] Figure 5 It is the circuit diagram of the utility model audio effect processing module;

[0031] Figure 6 It is the circuit diagram of the utility model camera interface module. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0033] Please refer to Figures 1-6 The utility model provides a technical scheme: multi -screen cooperation intelligent tablet mainboard connection circuit system, including:

[0034] Responsible for multi -task scheduling, application program execution and the central processing unit of coordination each hardware module;The central processing unit is the operation and control center of this circuit system.

[0035] For accelerating graphic rendering, video decoding and multi -screen output graphic processor;Graphic processor supports high resolution image, adopts special display memory to improve bandwidth, hardware acceleration reduces CPU load, and optimizes multi -screen fluency.

[0036] The graphic processor includes a chip U52, a capacitor C367 connected between the 1st pin and the 16th pin of the chip U52, a capacitor C379 connected to the 2nd pin of the chip U52, a capacitor C382 connected to the 3rd pin of the chip U52, a resistor R282 and a resistor R283 connected in series between the capacitor C379 and the capacitor C382, a resistor R227 and an inductor L49 connected in parallel to the connection terminal of the capacitor C379 and the resistor R282, and a capacitor C366 and a capacitor C368 connected in parallel between the 12th pin and the 13th pin of the chip U52.

[0037] The chip U52 is optimized for load matching by the resistor R282 and the resistor R283, signal reflection is reduced, the capacitor C388 and the capacitor C389 are used for stabilizing power supply, and the inductor L49 is used for suppressing electromagnetic interference.

[0038] The capacitor C366 is used for filtering low-frequency ripple, the capacitor C367 and the capacitor C368 are used for eliminating high-frequency noise, the capacitor C379, the capacitor C380, the capacitor C382 and the capacitor C383 are all distributed capacitors and are used for signal coupling or decoupling; the resistor R277 is used for input impedance matching and reducing signal source load, the resistor R282 is used for signal attenuation or gain control, and the resistor R283 is used for adjusting the gain of the chip U52.

[0039] The image signal output by the graphic processor is transmitted to a display interface module of an external screen, and resolution, refresh rate and audio synchronization are supported.

[0040] The display interface module includes a chip U9, a display screen LCD and a triode T1, the 1st pin of the triode T1 is connected to the 18th pin of the display screen LCD, the 2nd pin of the triode T1 is respectively connected with a resistor R8 and a resistor R9, and the resistor R8 is connected to the 3rd pin of the chip U9.

[0041] The chip U9 forms a charging and discharging circuit by the resistor R7, the resistor R8, the resistor R9, a capacitor C20 and a capacitor C21, and generates an accurate time signal.

[0042] The resistor R7 and the capacitor C21 form a charging circuit to set the high-level duration time of the chip U9, the resistor R8 and the capacitor C20 form a discharging circuit to control the low-level duration time, and the resistor R9 is a voltage dividing resistor used for adjusting the threshold voltage of the chip U9.

[0043] A power management module dynamically adjusts voltage and current and supplies power to other modules, the power management module uses high-efficiency energy conversion (such as a DC-DC converter) to reduce heat generation and prolong battery life, and supports fast charging.

[0044] Realize wireless communication module of wireless projection between devices, cloud service synchronization, and remote control, low delay transmission can guarantee video fluency, multi-band anti-interference enhances stability;

[0045] The wireless communication module comprises a chip U2, a MOS tube Q1 and a MOS tube Q2, a resistor R2 is connected to the pin 1 of the chip U2, a resistor RN2C is connected to the pin 3 of the chip U2, a resistor R3 and a light-emitting diode LED Blue connected in series are connected to the pin 6 of the chip U2, a resistor RN2B and a capacitor C5 are respectively connected to the pin 7 of the chip U2, a resistor RN2D is connected to the pin 11 of the chip U2, a switch S1 is connected to the pin 12 of the chip U2, and a resistor RN2A is connected to the pin 3 of the switch S1.

[0046] The resistor RN1C is connected between the gate and the source of the MOS tube Q1, the resistor RN1A is connected to the drain of the MOS tube Q1, and the source of the MOS tube Q1 is connected to the pin 15 of the chip U2; the resistor RN1D is connected between the gate and the source of the MOS tube Q2, the resistor RN1B is connected to the drain of the MOS tube Q2, and the source of the MOS tube Q2 is connected to the pin 16 of the chip U2.

[0047] The resistor R3 is used for current limiting protection of the light-emitting diode LED Blue, the light-emitting diode LED Blue is used for indicating the circuit state (wireless connection success, data transmission, etc.), the TX / RX pin is connected to the UART interface of an external device through the resistor RN1D and the resistor RN1C, and serial communication is realized.

[0048] The touch screen control module supports multi-point touch and gesture recognition;

[0049] The touch screen control module comprises a connector P3 and a chip U5 connected in an electrical manner and a connector P4 and a chip U8 connected in an electrical manner, resistors R20 and R21 are connected between the pin 9 and the pin 10 of the chip U5, and capacitors C29 and C40 connected in parallel are connected to the wiring ends of the resistors R20 and R21; an inductor L5 is connected between the pin 1 and the pin 6 of the chip U8, and a diode D8 is connected to the pin 1 of the chip U8.

[0050] The connector P3 is a connector of a touch sensor, which recognizes touch actions by detecting capacitance changes, the chip U8 is an LED backlight driving chip, which supports maximum eight channels of LED driving, the current of each channel is adjustable, and the backlight brightness is adjusted through a PWM0 input signal; the capacitors C29, C40 and C51 are used for suppressing high-frequency noise, the chip U8 is driven by a 5V power supply, and filtering is realized through the inductor L5 and the capacitor C46.

[0051] The sound effect processing module is used for processing audio coding.

[0052] The sound effect processing module comprises a chip U12, a connector J10, a connector J20 and a connector J30, a resistor R27 and a capacitor C70 are connected between a pin 2 of the connector J10 and a pin 19 of the chip U12, a resistor R30 and a capacitor C69 are connected between a pin 1 of the connector J10 and a pin 20 of the chip U12, a resistor R33 and a capacitor C71 are connected between a pin 18 of the chip U12 and a pin 1 of the connector J20, a capacitor C74 is connected between a pin 9 of the chip U12 and a pin 1 of the connector J30, and a capacitor C75 is connected between a pin 10 of the chip U12 and a pin 2 of the connector J30.

[0053] The chip U12 is responsible for analog-to-digital conversion (ADC) and digital-to-analog conversion (DAC) of audio data, and supports bidirectional audio transmission; the resistor R27 is used for attenuation or impedance matching of a clock signal, the resistor R30 is used for adjusting a clock division ratio, and the resistor R32 ensures stable signal level.

[0054] The capacitor C69 and the capacitor C70 are decoupling capacitors, which eliminate the influence of power supply noise on an analog signal, and the capacitor C71 filters at a microphone input end and suppresses high-frequency noise.

[0055] A camera interface module for transmitting a video stream to a graphic processor;

[0056] The camera interface module comprises a connector P2 and resistors R110 and R111 arranged in parallel, a capacitor C100 is connected between a pin 1 and a pin 2 of the connector P2, the resistor R110 is connected to a pin 4 of the connector P2, and the resistor R111 is connected to a pin 6 of the connector P2.

[0057] The resistors R110 and R111 serve as pull-up resistors on an I2C bus, which ensures that the bus is at a high level when idle, and the capacitor C100 is used for suppressing power supply noise and stabilizing the power supply voltage of a sensor.

[0058] The graphic processor, the display interface module, the wireless communication module, the touch screen control module, the sound effect processing module and the camera interface module are electrically connected with the central processor and the power management module, and the graphic processor is electrically connected with the sound effect processing module.

[0059] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-screen cooperation intelligent tablet mainboard connection circuit system, characterized in that, It comprises: a central processor responsible for multi-task scheduling, application execution, and coordination of various hardware modules; a graphics processor for accelerating graphics rendering, video decoding, and multi-screen output; a display interface module for transmitting image signals output by the graphics processor to an external screen; a power management module for dynamically adjusting voltage and current and powering other modules; a wireless communication module for realizing wireless screen projection between devices, cloud service synchronization, and remote control; a touch screen control module supporting multi-point touch and gesture recognition; an audio processing module for processing audio codecs; a camera interface module for transmitting video streams to the graphics processor; The graphics processor, display interface module, wireless communication module, touch screen control module, audio processing module, and camera interface module are electrically connected with the central processor and power management module, and the graphics processor is electrically connected with the audio processing module.

2. The multi-screen cooperative smart panel mainboard connection circuit system according to claim 1, characterized in that: The graphics processor comprises chip U52, a capacitor C367 is connected between pin 1 and pin 16 of the chip U52, a capacitor C379 is connected to pin 2 of the chip U52, a capacitor C382 is connected to pin 3 of the chip U52, a resistor R282 and a resistor R283 are connected in series between the capacitor C379 and the capacitor C382, a resistor R227 and an inductor L49 connected in parallel are connected to the connection terminal of the capacitor C379 and the resistor R282, a capacitor C366 and a capacitor C368 connected in parallel are connected between pin 12 and pin 13 of the chip U52.

3. The multi-screen cooperative smart panel mainboard connection circuit system according to claim 1, characterized in that: The display interface module comprises chip U9, display screen LCD, and triode T1, pin 1 of the triode T1 is connected to pin 18 of the display screen LCD, pin 2 of the triode T1 is respectively connected with a resistor R8 and a resistor R9, and the resistor R8 is connected to pin 3 of the chip U9.

4. The multi-screen cooperative smart panel mainboard connection circuit system according to claim 1, characterized in that: The wireless communication module comprises chip U2, MOS tube Q1, and MOS tube Q2, pin 1 of the chip U2 is connected with a resistor R2, pin 3 of the chip U2 is connected with a resistor RN2C, pin 6 of the chip U2 is connected with a resistor R3 and a light-emitting diode LED Blue connected in series, pin 7 of the chip U2 is respectively connected with a resistor RN2B and a capacitor C5, pin 11 of the chip U2 is connected with a resistor RN2D, pin 12 of the chip U2 is connected with a switch S1, and pin 3 of the switch S1 is connected with a resistor RN2A. The source of the MOS tube Q1 is connected to pin 15 of the chip U2, and the source of the MOS tube Q2 is connected to pin 16 of the chip U2.

5. The multi-screen cooperative smart panel mainboard connection circuit system according to claim 1, characterized in that: The touch screen control module comprises a connector P3 and a chip U5 electrically connected, and a connector P4 and a chip U8 electrically connected, a resistor R20 and a resistor R21 are connected between pin 9 and pin 10 of the chip U5, and the connection terminals of the resistor R20 and the resistor R21 are connected with a capacitor C29 and a capacitor C40 connected in parallel; an inductor L5 is connected between pin 1 and pin 6 of the chip U8, and pin 1 of the chip U8 is connected with a diode D8.

6. The multi-screen cooperative smart panel mainboard connection circuit system according to claim 1, characterized in that: The sound effect processing module comprises a chip U12, a connector J10, a connector J20 and a connector J30, a resistor R27 and a capacitor C70 are connected between a pin 2 of the connector J10 and a pin 19 of the chip U12, a resistor R30 and a capacitor C69 are connected between a pin 1 of the connector J10 and a pin 20 of the chip U12, a resistor R33 and a capacitor C71 are connected between a pin 18 of the chip U12 and a pin 1 of the connector J20, a capacitor C74 is connected between a pin 9 of the chip U12 and a pin 1 of the connector J30, and a capacitor C75 is connected between a pin 10 of the chip U12 and a pin 2 of the connector J30.

7. The multi-screen cooperative smart panel mainboard connection circuit system according to claim 1, characterized in that: The camera interface module comprises a connector P2, a resistor R110 and a resistor R111 connected in parallel, a capacitor C100 is connected between a pin 1 and a pin 2 of the connector P2, the resistor R110 is connected to a pin 4 of the connector P2, and the resistor R111 is connected to a pin 6 of the connector P2.

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