CN112492258A - Multimedia intelligent conference machine control system - Google Patents
Multimedia intelligent conference machine control system Download PDFInfo
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- CN112492258A CN112492258A CN202011449069.4A CN202011449069A CN112492258A CN 112492258 A CN112492258 A CN 112492258A CN 202011449069 A CN202011449069 A CN 202011449069A CN 112492258 A CN112492258 A CN 112492258A
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- 230000002093 peripheral effect Effects 0.000 description 6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
- H04N7/152—Multipoint control units therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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Abstract
The invention relates to a multimedia intelligent conference machine control system, which comprises a DC-DC circuit, a signal source input module, a TYPE C processing circuit, a USB control circuit, an input module, a main system control chip and a power amplifier control circuit, wherein the main system control chip receives input information from the signal source input module, processes and calls an external output module, a TYPE A interface and a TYPE B interface to work, outputs audio signals to a loudspeaker through the power amplifier control circuit in real time, and switches to the current signal source input module in the signal source input module through the USB control circuit when the main system control chip monitors the input change of a signal source. When the current signal detects that a signal is accessed, the main system control chip can automatically detect and can automatically switch through the electronic switch, the practicability of a display product is improved, and the requirement of actual display interaction and interconnection is met.
Description
Technical Field
The invention relates to the technical field of electronic display equipment, in particular to a multimedia intelligent conference machine control system.
Background
At present, the application of the multimedia intelligent conference machine is more and more extensive, and a plurality of people in the conference have access to the demand, and the multimedia intelligent conference all-in-one machine can carry out conference, audio, video, camera shooting, audio recording and video recording and teleconferencing on a conference room. The installation mode of the multimedia intelligent conference machine is flexible and changeable, and the multimedia intelligent conference machine can be hung on a wall, spliced with a screen, wirelessly projected on the screen for teleconferencing and the like, and perfectly adapts to various conference environments.
The multimedia intelligent conference machine can only display the picture of one signal source, and the operation of the current multi-signal-source switching control is not visual enough, so that the switching efficiency is low.
Therefore, the multimedia intelligent conference machine control system is provided, when the current signal input source is finished, whether other signal input sources are available or not is detected, and the input sources are available and can be automatically switched.
Disclosure of Invention
The invention aims to provide a multimedia intelligent conference machine control system, which aims to solve the problem that when a signal source is replaced, the input is required to be switched to an available signal input source and audio is output through a power amplifier circuit.
In order to achieve the purpose, the invention adopts the technical scheme that: a multimedia intelligent conference machine control system comprising:
a DC-DC circuit that supplies power to the control system;
the signal source input module comprises an HDMI interface, a system module and a TYPE C interface and is used for providing a signal source for the control system;
the TYPE C processing circuit is connected with the TYPE C interface and is used for charging and supplying power to equipment connected with the TYPE C interface and transmitting signal processing to the main system control chip;
the USB control circuit is connected with the TYPE A interface and the TYPE C processing circuit, is connected with the system module and the TYPE B interface through a USB Switch chip when using HDMI signal input, and is used for starting and calling the TYPE A interface and the external output module and switching according to the signal of the control chip of the main system received;
the external output module comprises a camera, a microphone module and a touch capacitor TP, is connected with the USB control circuit and can switch and call work according to the change of the current work signal source input module;
the main system control chip is connected with the external output module and the USB control circuit, receives a signal source provided by the signal source input module, switches to the current signal source input module in the signal source input module through the USB control circuit and switches to the current signal source;
the main system control chip processes and outputs the audio signal to the loudspeaker through the power amplifier control circuit;
the main system control chip receives input information from the signal source input module, processes and calls the external output module, the TYPE A interface and the TYPE B interface to work, outputs audio signals to the loudspeaker through the power amplifier control circuit in real time, and switches the signal source input module to the current signal source input module through the USB control circuit and the TYPE C processing circuit when the main system control chip monitors signal source input change.
As further optimization, the TYPE C processing circuit comprises a PD charging chip, a first USB 2.0SWITCH chip, a PD control chip and a MUX chip, the TYPE C interface output end is respectively connected with the PD control chip input end and the MUX chip input end, the PD charging chip output end and the first USB 2.0SWITCH chip output end are respectively connected with the TYPE C interface input end, the MUX chip is bidirectionally connected with the USB control circuit, the MUX chip output end is connected with the signal input end of the main system control chip, the output end of the USB control circuit is respectively connected with the PD charging chip input end and the first USB 2.0SWITCH chip input end, and the PD control chip output end is connected with the PD charging chip input end.
As further optimization, USB control circuit includes USB3.0 HUB chip, USB 2.0HUB chip and USB 2.0SWITCH chip, USB3.0 HUB chip input is all connected to TYPE C processing circuit and USB SWITCH chip's output, TYPE A interface input is connected to USB3.0 HUB chip's output, a camera, USB 2.0HUB chip and USB 2.0SWITCH chip, TYPE A interface input is connected to USB 2.0SWITCH chip output, USB 2.0HUB chip output is connected and is distinguished microphone module, touch-control electric capacity TP and TYPE C processing circuit.
As a further optimization, the microphone module comprises a microphone and a DSP echo cancellation chip, the output terminal of the USB control circuit is connected to the input terminal of the microphone, the output terminal of the microphone is respectively connected to the input terminal of the DSP echo cancellation chip and the signal input terminal of the main system control chip, and the output terminal of the main system control chip is connected to the input terminal of the DSP echo cancellation chip.
As a further optimization, the power amplifier control circuit comprises a first change-over switch, a second change-over switch, a third change-over switch, a fourth change-over switch, a Line out interface, a Line in interface, an audio AD converter, an audio power amplifier chip and a loudspeaker connected with the audio power amplifier chip, a GPIO1 interface, a GPIO2 interface, a GPIO3 interface and a GPIO4 interface of a main system control chip are respectively connected with the input ends of the first change-over switch, the second change-over switch, the third change-over switch and the fourth change-over switch, the main system control chip is connected with the input end of the first change-over switch, the output end of the first change-over switch is respectively connected with the input ends of the second change-over switch and the third change-over switch, the output end of the second change-over switch is connected with the Line out interface, the output end of the Line in interface is respectively connected with the input end of the fourth change-over, the output end of the fourth change-over switch is connected with the audio AD converter, and the output end of the audio AD converter is connected with the audio power amplifier chip.
Compared with the prior art, the invention has the advantages and positive effects that: the audio-video display system is simple in design, is provided with a TYPE A interface, a TYPE B interface, a TYPE C interface and an HDMI interface, is convenient for external intelligent equipment to be connected and perform signal switching, is connected with a camera, a microphone and a touch capacitor TP, can be used for realizing the input and output of audio and video according to the calling work of a current working signal source, is connected with the touch capacitor TP by a main system control chip, and can be touched by fingers, a pen and a laser pen of a user, so that the practicability of a display product is improved, and the requirement of actual display interaction and interconnection is met. The invention has 3 signal source inputs including system module input, HDMI interface input and TYPE C interface input, the main system control chip judges and identifies which signal source input is, and can switch and call the signal source according to the current working signal source, simultaneously calling a camera, a microphone, a touch capacitor TP, a TYPE A interface and a TYPE B interface, outputting sound to a loudspeaker by a main system control chip through a power amplifier control circuit, connecting the power amplifier control circuit with an audio line-in interface and a line-out interface, a sound (signal) output and a sound (signal) input to the system, Line out is an audio output, can be connected with a sound box to play sound signals through a line-out interface, the line-in interface is an audio input, the sound signals of other players (non-digital signals such as a repeater) can be recorded into the system through the line-in. TYPE C processing circuit can be for the external device quick charge who connects TYPE C interface, makes the CC foot discernment peripheral hardware voltage demand of TYPE-C interface, but the high-power charging of different voltages of automatic output to peripheral hardware 65w, TYPE C processing circuit transmits signal data to main system control chip and USB control circuit simultaneously. The invention can rapidly and automatically switch signal input sources, can selectively display video and audio of the signal source, and realizes the input switching of multiple signal sources.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic diagram of a TYPE C interface pin connection relationship;
FIG. 4 is a schematic diagram of a pin connection relationship of a USB 2.0SWITCH chip;
FIG. 5 is a schematic diagram of a pin connection relationship of a PD control chip;
FIG. 6 is a schematic diagram of the connection relationship of the pins of the MUX chip;
FIG. 7 is a schematic diagram of a pin connection relationship of a PD charging chip;
FIG. 8 is a schematic diagram of a pin connection relationship of a USB3.0 HUB chip;
FIG. 9 is a schematic diagram of a pin connection relationship of a USB 2.0HUB chip;
FIG. 10 is a schematic diagram illustrating a pin connection relationship of a TYPE A interface;
FIG. 11 is a schematic diagram of the connection relationship between the pins of the audio power amplifier chip;
FIG. 12 is a schematic diagram of the pin connection relationship of the audio AD converter;
FIG. 13 is a schematic diagram of a pin connection relationship of the first switch;
FIG. 14 is a schematic diagram of a connection relationship between Line in interface pins of the earphone;
FIG. 15 is a schematic diagram illustrating a connection relationship between Line out interface pins of the earphone;
FIG. 16 is a schematic view of a pin connection relationship of a camera;
fig. 17 is a schematic diagram illustrating a pin connection relationship of the touch capacitor TP;
fig. 18 is a schematic diagram of the connection relationship of the microphone pins.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The present invention, as shown in fig. 1-2, comprises: a DC-DC circuit that supplies power to the control system; the signal source input module comprises a DC-DC circuit which provides power for the control system; the signal source input module comprises an HDMI interface, a system module and a TYPE C interface and is used for providing a signal source for the control system; the TYPE C processing circuit is connected with the TYPE C interface and is used for charging and supplying power to equipment connected with the TYPE C interface and transmitting signal processing to the main system control chip; the USB control circuit is connected with the TYPE A interface and the TYPE C processing circuit, is connected with the system module and the TYPE B interface through a USB Switch chip, and is used for starting and calling the TYPE A interface and the external output module and switching according to a signal of a control chip of a received main system; the external output module comprises a camera, a microphone module and a touch capacitor TP, is connected with the USB control circuit and can switch and call work according to the change of the current work signal source input module; the main system control chip is connected with the external output module and the USB control circuit, receives a signal source provided by the signal source input module, switches to the current signal source input module in the signal source input module through the USB control circuit and switches to the current signal source; the main system control chip processes and outputs the audio signal to the loudspeaker through the power amplifier control circuit; the main system control chip receives input information from the signal source input module, processes and calls the external output module, the TYPE A interface and the TYPE B interface to work, outputs audio signals to the loudspeaker through the power amplifier control circuit in real time, and switches the signal source input module to the current signal source input module through the USB control circuit and the TYPE C processing circuit when the main system control chip monitors signal source input change. As shown in fig. 1-18, wherein the output terminal of TYPE C processing circuit is connected to the signal input terminal of TYPE C interface, the signal input terminal of main system control chip, and the input terminal of USB control circuit, the output terminals of SDM system module and TYPE B interface are connected to the input terminal of USB SWITCH chip, the output terminal of SDM system module is connected to the signal input terminal of main system control chip, the output terminals of USB SWITCH chip and main system control chip are connected to the input terminal of USB control circuit, the output terminal of USB control circuit is connected to camera, TYPE a interface input terminal, microphone module, touch capacitor TP, TYPE C processing circuit, the main system control chip is connected to HDMI interface input terminal and power amplifier control circuit input terminal.
The invention has 3 signal source inputs, including system module input SDM, HDMI interface input and TYPE C interface input, the main system control chip detects whether other signal input sources are available or not after detecting the current signal input source, and the other signal input sources are available and can be automatically switched. For example, if 3 signal source inputs are all connected to the system, the main system control chip calls external output equipment (a camera, a microphone module and a touch capacitor TP) and starts a TYPE A interface and a TYPE B interface, and the main system control chip transmits audio and video data of the signal input source to a loudspeaker through a power amplifier control circuit. The main system control chip detects that 3 signal sources exist, the default access of the system to the HDMI input signal source is assumed (the default access to other input signal sources is also assumed), when the HDMI input signal source fails or the input signal source is removed artificially or other reasons cause the HDMI input signal source not to access the system, the main system control chip detects that the current signal input source (HDMI input signal) is finished, the system is switched to other signal input sources (system module input SDM and TYPE C interface input), meanwhile, the external output equipment (camera, microphone module and touch control capacitor TP) is also called by other signal input sources (system module input SDM and TYPE C interface input) to operate, and the information of other signal input sources is output, and the switching is realized through the main system control chip, the SWITCH chip and the HUB. When the signal source of the SDM input by the system module is not accessed into the system, the main system control chip detects that the current signal input source (system module input signal) is finished, and then the signal source is switched to the TYPE C interface signal source. When none of the 3 signal sources is input into the system, the main system control chip detects that no signal source exists, no signal exists in the external output equipment, and the system does not work. The HDMI signal source input is matched with a TYPE B interface to be started, switching is achieved through a main system control chip, a SWITCH chip and a HUB chip, and other signal sources (system module input SDM and TYPE C interface input) can be directly switched through the main system control chip, the SWITCH chip and the HUB chip. The system module inputs the SDM as an external device signal source. Referring to fig. 1 and 2, the main system control chip is a scalar chip, the HUB chip is in the USB control circuit, and the HUB chip includes a USB3.0 HUB chip and a USB 2.0HUB chip. When the current signal input source is finished, the main system control chip can detect whether other signal input sources are available or not, the available signals can be automatically switched to the past through the SWITCH chip and the HUB chip, the USB is a signal, the SWITCH is switching, the SWITCH is a switching circuit, the USB is a signal interface, the SWITCH controls a USB port and calls, TYPE-B under TYPE-C and a system module is not active, and TYPE-B is only active under HDMI.
Further, as shown in fig. 1-7, the TYPE C processing circuit includes a PD charging chip, a first USB 2.0SWITCH chip, a PD control chip and a MUX chip, the TYPE C interface output end is connected to the PD control chip input end and the MUX chip input end respectively, the PD charging chip output end and the first USB 2.0SWITCH chip output end are connected to the TYPE C interface input end respectively, the MUX chip is connected to the USB control circuit in both directions, the MUX chip output end is connected to the signal input end of the main system control chip, the USB control circuit output end is connected to the PD charging chip input end and the first USB 2.0SWITCH chip input end respectively, and the PD control chip output end is connected to the PD charging chip input end. The TYPE _ C also has USB3.0 signals therein, wherein, as shown in fig. 5, the model of the PD control chip is FL7102-2Q0, and FL7102-2Q0 is a highly integrated PD controller, which is an advanced TYPE-C power transmission control chip supporting PD, and can realize conversion from TYPE C to HDMI expanding dock, and through the existing USB interface, high-quality extended screen display can be realized, and even a dedicated video interface can be replaced. As shown in fig. 6, the MUX chip is HD3SS460, the MUX chip multiplexer (data selector) is shown in fig. 7, the PD charging chip is SC8815, which is a fast charging detection chip, capable of performing the management of the rechargeable battery, and is a synchronous buck-boost charging controller, and supports the operation of the battery reverse discharging. The USB 2.0SWITCH chip has model number NLAS7222A, but may have other model numbers. External equipment (cell-phone, panel computer, notebook computer, shoot with unmanned aerial vehicle etc.) is connected to TYPE C interface, the CC end of TYPE C interface is connected to the PD control chip, the PD control chip detects, carry out power ability with equipment and communicate, the request power, the PD control chip control PD charges the chip and carries out the charge-discharge for external equipment, the MUX chip carries out signal transmission to main system control chip through DP1.4 interface, the switching signal source when USB 2.0SWITCH chip does benefit to signal source input and changes. DC-DC circuit can provide different voltage supply, like 3.3V, 1.5V, 0.95V, and main system control chip also can detect and receive corresponding voltage, and when external equipment was connected to TYPE C interface, TYPE C processing circuit can give external equipment quick charge, makes the CC foot recognition peripheral hardware voltage demand of TYPE-C interface, but the high-power charging of different voltages of automatic output to peripheral hardware 65 w.
Further, as shown in fig. 1-2 and fig. 8-10, the USB control circuit includes a USB3.0 HUB chip, a USB 2.0HUB chip and a second USB 2.0SWITCH chip, wherein the output terminals of the TYPE C processing circuit and the USB SWITCH chip are connected to the input terminal of the USB3.0 HUB chip, the output terminal of the USB3.0 HUB chip is connected to the TYPE a interface input terminal, the camera, the USB 2.0HUB chip and the second USB 2.0SWITCH chip, the output terminal of the second USB 2.0SWITCH chip is connected to the TYPE a interface input terminal, and the output terminal of the USB 2.0HUB chip is connected to the microphone module, the touch capacitor TP and the TYPE C processing circuit, respectively. The model of USB3.0 HUB chip is GL3523S-OV5S1, USB 2.0HUB chip model is GL850G, the model of USB 2.0SWITCH chip is NLAS7222A, monitor the signal source input change when main system control chip, SWITCH to current signal source input module in signal source input module through USB control circuit, and call microphone module, touch-control electric capacity TP, and camera and start TYPE A interface through USB control circuit, main system control chip, SWITCH chip and HUB chip realize switching.
Furthermore, the microphone module comprises a microphone and a DSP echo cancellation chip, the output end of the USB control circuit is connected with the input end of the microphone, the output end of the microphone is respectively connected with the input end of the DSP echo cancellation chip and the signal input end of the main system control chip, and the output end of the main system control chip is connected with the input end of the DSP echo cancellation chip.
Further, as shown in fig. 2 and fig. 11-13, the power amplifier control circuit includes a first switch, a second switch, a third switch, a fourth switch, an audio AD converter, and an audio power amplifier chip, wherein the GPIO1 interface, the GPIO2 interface, the GPIO3 interface, and the GPIO4 interface of the main system control chip are respectively connected to the input terminals of the first switch, the second switch, the third switch, and the fourth switch, the output terminal of the main system control chip is connected to the input terminal of the first switch, the output terminal of the first switch is respectively connected to the input terminals of the second switch and the third switch, the third switch is respectively connected to the input terminals of the second switch and the fourth switch, the output terminal of the fourth switch is connected to the audio AD converter, the output terminal of the audio AD converter is connected to the audio power amplifier chip, and the audio power amplifier chip is connected to the speaker, the main system control chip is connected with the mute pin of the audio power amplifier chip. The main system control chip outputs sound to the loudspeaker through the power amplifier control circuit. The models of the first change-over switch, the second change-over switch, the third change-over switch and the fourth change-over switch are all SGM48752, the SGM48752 is an analog signal switch chip, and the main system control chip realizes the effect of power amplification through the change-over switches according to the input information signals of the signal source, so that the input information signals of the signal source are output to the loudspeaker.
Further, as shown in fig. 14 and 15, the power amplifier control circuit is connected to a Line out interface and a Line in interface, the output end of the second switch is connected to the input end of the Line out interface, and the output end of the Line in interface is connected to the input end of the fourth switch and the input end of the Line out interface, respectively. The power amplifier control circuit is also connected with an audio Line-in interface and a Line-out interface, and can output sound (signals) and input the sound (signals) into a system, the Line out is audio output and can be connected with a sound box, the sound signals are played through the Line-out interface, the Line-in interface is audio input, and the sound signals of other players (such as a repeater and the like which are not digital signals) can be recorded into the system through the Line-in interface.
The audio-video display system is simple in design, is provided with a TYPE A interface, a TYPE B interface, a TYPE C interface and an HDMI interface, is convenient for external intelligent equipment to be connected and perform signal switching, is connected with a camera, a microphone and a touch capacitor TP, can be used for realizing the input and output of audio and video according to the calling work of a current working signal source, is connected with the touch capacitor TP by a main system control chip, and can be touched by fingers, a pen and a laser pen of a user, so that the practicability of a display product is improved, and the requirement of actual display interaction and interconnection is met. The invention has 3 signal source inputs including system module input, HDMI interface input and TYPE C interface input, the main system control chip judges and identifies which signal source input is, and can switch and call the signal source according to the current working signal source, simultaneously calling a camera, a microphone, a touch capacitor TP, a TYPE A interface and a TYPE B interface, outputting sound to a loudspeaker by a main system control chip through a power amplifier control circuit, connecting the power amplifier control circuit with an audio line-in interface and a line-out interface, a sound (signal) output and a sound (signal) input to the system, Line out is an audio output, can be connected with a sound box to play sound signals through a line-out interface, the line-in interface is an audio input, the sound signals of other players (non-digital signals such as a repeater) can be recorded into the system through the line-in. TYPE C processing circuit can be for the external device quick charge who connects TYPE C interface, makes the CC foot discernment peripheral hardware voltage demand of TYPE-C interface, but the high-power charging of different voltages of automatic output to peripheral hardware 65w, TYPE C processing circuit transmits signal data to main system control chip and USB control circuit simultaneously. The invention can rapidly and automatically switch signal input sources, can selectively display video and audio of the signal source, and realizes the input switching of multiple signal sources.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings and the working principle of the present invention is explained, but the present invention is not limited thereto, and various changes made within the knowledge of those skilled in the art without departing from the gist of the present invention are within the scope of the present invention.
Claims (6)
1. A multimedia intelligent conference machine control system, comprising:
a DC-DC circuit that supplies power to the control system;
the signal source input module comprises an HDMI interface, a system module and a TYPE C interface and is used for providing a signal source for the control system;
the TYPE C processing circuit is connected with the TYPE C interface and is used for charging and supplying power to equipment connected with the TYPE C interface and transmitting signal processing to the main system control chip;
the USB control circuit is connected with the TYPE A interface and the TYPE C processing circuit, is connected with the system module and the TYPE B interface through a USB Switch chip when using HDMI signal input, and is used for starting and calling the TYPE A interface and the external output module and switching according to the signal of the control chip of the main system received;
the external output module comprises a camera, a microphone module and a touch capacitor TP, is connected with the USB control circuit and can switch and call work according to the change of the current work signal source input module; the main system control chip is connected with the external output module and the USB control circuit, receives a signal source provided by the signal source input module, switches to the current signal source input module in the signal source input module through the USB control circuit and switches to the current signal source;
the main system control chip processes and outputs the audio signal to the loudspeaker through the power amplifier control circuit;
the main system control chip receives input information from the signal source input module, processes and calls the external output module, the TYPE A interface and the TYPE B interface to work, outputs audio signals to the loudspeaker through the power amplifier control circuit in real time, and switches the signal source input module to the current signal source input module through the USB control circuit and the TYPE C processing circuit when the main system control chip monitors signal source input change.
2. The multimedia intelligent conference machine control system according to claim 1, characterized in that: TYPE C processing circuit includes the PD chip that charges, first USB 2.0SWITCH chip, PD control chip and MUX chip, TYPE C interface output connects PD control chip input and MUX chip input respectively, TYPE C interface output connects TYPE C interface input respectively with first USB 2.0SWITCH chip output, MUX chip and USB control circuit both way junction, the signal input part of main system control chip is connected to MUX chip output, PD charging chip input and first USB 2.0SWITCH chip input are connected respectively to USB control circuit's output, PD control chip input is connected to PD control chip output.
3. The multimedia intelligent conference machine control system according to claim 1, characterized in that: USB control circuit includes USB3.0 HUB chip, USB 2.0HUB chip and second USB 2.0SWITCH chip, USB3.0 HUB chip input is all connected to the output of TYPE C processing circuit and USB SWITCH chip, TYPE A interface input is connected to the output of USB3.0 HUB chip, a camera, USB 2.0HUB chip and second USB 2.0SWITCH chip, TYPE A interface input is connected to second USB 2.0SWITCH chip output, USB 2.0HUB chip output is connected and is distinguished microphone module, touch-control electric capacity TP and TYPE C processing circuit.
4. The multimedia intelligent conference machine control system according to claim 1, characterized in that: the power amplifier control circuit comprises a first change-over switch, a second change-over switch, a third change-over switch, a fourth change-over switch, an audio AD converter and an audio power amplifier chip, a GPIO1 interface of a main system control chip, a GPIO2 interface, a GPIO3 interface, a GPIO4 interface is respectively connected with the first change-over switch, the second change-over switch, the third change-over switch and an input end of the fourth change-over switch, an output end of the main system control chip is connected with an input end of the first change-over switch, an output end of the first change-over switch is respectively connected with an input end of the second change-over switch and an input end of the third change-over switch, the third change-over switch is respectively connected with an input end of the fourth change-over switch, an output end of the fourth change-over switch.
5. The multimedia intelligent conference machine control system of claim 4, characterized in that: the power amplifier control circuit is connected with a Line out interface and a Line in interface, the output end of the second change-over switch is connected with the input end of the Line out interface, and the output end of the Line in interface is respectively connected with the input end of the fourth change-over switch and the input end of the Line out interface.
6. The multimedia intelligent conference machine control system according to claim 1, characterized in that: the microphone module comprises a microphone and a DSP echo eliminating chip, the output end of the USB control circuit is connected with the input end of the microphone, the output end of the microphone is respectively connected with the input end of the DSP echo eliminating chip and the signal input end of the main system control chip, and the output end of the main system control chip is connected with the input end of the DSP echo eliminating chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170046289A1 (en) * | 2015-08-14 | 2017-02-16 | Icron Technologies Corporation | Systems for enhancing boardroom tables to include usb type-c power and connectivity functionality |
| CN210627185U (en) * | 2019-09-25 | 2020-05-26 | 广州视源电子科技股份有限公司 | Signal transmission circuit and interactive intelligent panel |
| CN210627190U (en) * | 2019-11-18 | 2020-05-26 | 深圳市康冠商用科技有限公司 | Signal source input circuit for touch control all-in-one machine |
| EP3657778A1 (en) * | 2017-07-20 | 2020-05-27 | Hisense Visual Technology Co., Ltd. | Terminal device and control method therefor |
| CN210781063U (en) * | 2019-12-12 | 2020-06-16 | 深圳市绿联科技有限公司 | Multifunctional matrix switcher based on USB TYPE-C interface |
| CN211016464U (en) * | 2020-03-26 | 2020-07-14 | 深圳市颍创科技有限公司 | Board card display equipment with blind plugging and USB interface switching functions |
| CN111711775A (en) * | 2020-07-20 | 2020-09-25 | 深圳市东明炬创电子有限公司 | Clear demonstration switch of superelevation |
| CN213638004U (en) * | 2020-12-09 | 2021-07-06 | 深圳市世纪创新显示电子有限公司 | Multimedia intelligent conference machine control system |
-
2020
- 2020-12-09 CN CN202011449069.4A patent/CN112492258A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170046289A1 (en) * | 2015-08-14 | 2017-02-16 | Icron Technologies Corporation | Systems for enhancing boardroom tables to include usb type-c power and connectivity functionality |
| EP3657778A1 (en) * | 2017-07-20 | 2020-05-27 | Hisense Visual Technology Co., Ltd. | Terminal device and control method therefor |
| CN210627185U (en) * | 2019-09-25 | 2020-05-26 | 广州视源电子科技股份有限公司 | Signal transmission circuit and interactive intelligent panel |
| CN210627190U (en) * | 2019-11-18 | 2020-05-26 | 深圳市康冠商用科技有限公司 | Signal source input circuit for touch control all-in-one machine |
| CN210781063U (en) * | 2019-12-12 | 2020-06-16 | 深圳市绿联科技有限公司 | Multifunctional matrix switcher based on USB TYPE-C interface |
| CN211016464U (en) * | 2020-03-26 | 2020-07-14 | 深圳市颍创科技有限公司 | Board card display equipment with blind plugging and USB interface switching functions |
| CN111711775A (en) * | 2020-07-20 | 2020-09-25 | 深圳市东明炬创电子有限公司 | Clear demonstration switch of superelevation |
| CN213638004U (en) * | 2020-12-09 | 2021-07-06 | 深圳市世纪创新显示电子有限公司 | Multimedia intelligent conference machine control system |
Non-Patent Citations (1)
| Title |
|---|
| 吴建钟;: "基于USB Type-C的液晶显示系统研发", 福建电脑, no. 09, 25 September 2017 (2017-09-25) * |
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