CN115514903A - Split type video acquisition display device with signal automatic switch-over function - Google Patents

Abstract

The invention provides a split type video acquisition and display device with an automatic signal switching function. The video acquisition module comprises a video acquisition unit, an MCU (microprogrammed control unit) processor unit, a video output unit and a power supply unit I; the video processing display module comprises a signal processing unit, a video display unit and a power supply unit II; the connecting cable is used for connecting the video acquisition module and the video processing display module and transmitting a video channel switching signal and a video channel control signal. When using connecting cable to connect video acquisition module and video processing display module, the video channel control signal who comes from video acquisition module is the low level, and signal processing unit among the video processing display module receives wired video signal, otherwise, signal processing unit receives wireless video signal to handle the video signal who receives, then transmit for video display unit.

Description

A split-type video acquisition and display device with automatic signal switching function

technical field

The invention relates to the technical field of video switching, in particular to a split-type video acquisition and display device with automatic signal switching function.

Background technique

Currently, a split-type video capture and display device with wired video and wireless video is usually composed of a video capture module, a video processing and display module, a control module, and a connecting cable. When the user selects and switches between wired video and wireless video, he needs to use the control module for control, which is cumbersome to operate, and the video signal may be interrupted during video switching. It affects the user's real-time observation of the video and brings certain restrictions to the use.

Contents of the invention

In view of the above shortcomings, the present invention provides a split-type video acquisition and display device with automatic signal switching function, which can automatically and seamlessly switch wired video and wireless video without using an additional control device for manipulation, without causing video interruption.

In order to achieve the above object, the technical solution adopted by the present invention is: a split-type video acquisition and display device with automatic signal switching function, including a video acquisition module, a video processing and display module and a connecting cable;

The video capture module includes a video capture unit, an MCU processor unit, a video output unit and a power supply unit 1;

The video processing display module includes a signal processing unit, a video display unit and a power supply unit II;

The connection cable is used to connect the video acquisition module and the video processing and display module, and transmit video channel switching signals and video channel control signals.

Further, the video acquisition unit is used for video acquisition of images, and divides the collected video signal into two channels of signals, one channel of video signal is used as wired video, which is directly output through the connecting cable; the other channel of video signal is output to the video output unit, and the video signal The output unit converts the video signal to wireless video.

The MCU processor unit outputs a logic sequence to perform power management on the power supply unit 1; judges the input video channel switching signal, and outputs the video channel control signal to the video output unit and the connecting cable respectively.

The video output unit converts the collected video signal into wireless video, judges the video channel control signal output by the MCU processor, and controls the wireless video transmission signal or prohibits the transmission signal.

The signal processing unit processes the video channel control signal from the video acquisition module, selects the corresponding video receiving channel, and performs video processing on the received video signal; at the same time, outputs the logic sequence and manages the power supply unit II.

The video signal processed by the signal processing unit is connected to the video display unit through a video signal line for displaying the video signal processed by the signal processing unit on the video display unit.

Compared with the prior art, the beneficial effect of the present invention is that the split-type video acquisition and display device provided by the present invention with the function of automatic signal switching does not need to be controlled by the control module, and the video signal will not appear during the switching process. The interruption phenomenon affects the real-time observation of the video by the user.

In this device, the video signal collected by the video acquisition module is divided into two channels of signals, one channel of video signal is used as wired video output, and the other channel of video signal is converted into wireless video signal. In the default state of this device, there is no need to use a connecting cable. The video channel switching signal chnl_switch (suspended) input to the video acquisition module is at a high logic level, and the MCU processor unit in the video acquisition module accordingly converts the video channel control signal chnl_ctrl Set to high level, the video acquisition module converts the collected video into a wireless video signal and transmits it, and the video display processing module receives and displays the wireless video signal. For places where it is inconvenient to collect and display video signals, only the video acquisition module is used to collect video signals, and the device can display video signals through the video display processing module.

When you need to use wired video, use a connecting cable to connect the video capture module and the video processing display module. Because the connecting cable has been specially treated, the video channel switch chnl_switch signal line and the ground signal line in the cable are connected together internally. , so the video channel switch signal chnl_switch input to the video capture module is a low logic level, the MCU processor unit in the video capture module accordingly sets the video channel control signal chnl_ctrl to a low level, and the video channel control signal chnl_ctrl is divided into two One output is for the video output unit, wireless video transmission is prohibited, and the other is output to the video processing and display module through a connecting cable. The video processing and display module receives wired video, and the video signal will not be interrupted during the video signal switching process.

Description of drawings

Fig. 1 is the system block diagram that adopts wireless video transmission of the present invention;

Fig. 2 is the system block diagram that the present invention adopts wired video transmission;

Fig. 3 is a system block diagram of video acquisition module of the present invention;

Fig. 4 is a system block diagram of the video processing and display module of the present invention.

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Figures 1-4, a split-type video capture and display device with automatic signal switching function includes a video capture module, a video processing and display module and a connecting cable.

As shown in Figure 3, the video capture module includes a video capture unit, an MCU processor unit, a video output unit and a power supply unit one;

As shown in Figure 4, the video processing and display module includes a signal processing unit, a video display unit and a power supply unit II;

The connecting cable is used to connect the video acquisition module and the video processing display module, and transmit the video channel switching signal chnl_switch and the video channel control signal chnl_ctrl.

As shown in Figure 3, the video acquisition unit is used for image video acquisition, and the video signal collected is divided into two channels of signals, one channel of video signal is used as wired video, which is directly output through the connecting cable; the other channel of video signal is output to the video output unit, The video output unit converts the video signal into wireless video.

The MCU processor unit outputs the logic sequence to perform power management on the power supply unit 1; judges the logic level of the input video channel switching signal chnl_switch, and outputs the video channel control signal chnl_ctrl to the video output unit and the connecting cable respectively.

The video output unit converts the collected video signal into wireless video, judges the logic level of the video channel control signal chnl_ctrl output by the MCU processor, and controls the wireless video transmission signal or prohibits the transmission signal.

The signal processing unit processes the video channel control signal chnl_ctrl from the video acquisition module, selects the corresponding video receiving channel, and performs video processing on the received video signal; at the same time, outputs the logic sequence and manages the power supply unit II.

The video signal processed by the signal processing unit is connected to the video display unit through a video signal line, and is used to display the video signal processed by the signal processing unit on the video display unit.

As shown in Figure 1, the video capture module outputs wireless video by default. The video channel switching signal chnl_switch (suspended) input to the video acquisition module is a high logic level, and the MCU processor unit in the video acquisition module accordingly sets the video channel control signal chnl_ctrl to a high level, and the video acquisition module will collect the The video is converted into a wireless video signal and sent out, and the video display processing module receives and displays the wireless video signal.

When the user selects wired video, a connection cable is required. As shown in Figure 2, the connecting cable connects the video acquisition module and the video processing display module, transmits the video channel switching signal chnl_switch and the video channel control signal chnl_ctrl, and transmits the wired video of the video acquisition module to the video processing display module.

The connection cable has been specially treated, and the video channel switching signal line chnl_switch in the cable is connected with the signal line of the signal ground internally. When the user uses the connection cable to connect the video acquisition module and the video processing display module, the input to The video channel switching signal chnl_switch in the video capture module is at a low logic level; otherwise, the video channel switching signal chnl_switch is at a high logic level because it is floating.

The MCU processor unit in the video acquisition module judges the logic level of the video channel switching signal chnl_switch. The video channel switching signal chnl_ctrl is output as a corresponding logic level signal.

When the wired video is transmitted to the video processing and display module through the connecting cable, the video channel switching signal chnl_switch is at a low logic level, the MCU processor unit sets the video channel control signal chnl_ctrl to a low level, and the video channel control signal chnl_ctrl is divided into two outputs , one output to the video output unit, prohibiting wireless video transmission, and the other output to the video processing and display module through a connecting cable.

The video processing and display module integrates the signal processing unit, the video display unit, and the power supply unit into an integrated structure. When connecting the video acquisition module and the video processing display module with a connecting cable, the video channel control signal chnl_ctrl from the video acquisition module is low level, and the signal processing unit in the video processing display module receives the wired video signal; otherwise, the signal processing unit Receive the wireless video signal, process the received video signal, and then transmit it to the video display unit.

In the entire video switching process, seamless switching of video signals can be realized without any control device, which is convenient for users.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims (6)

1. A split-type video acquisition and display device with automatic signal switching function, characterized in that it includes a video acquisition module, a video processing display module and a connecting cable; The video capture module includes a video capture unit, an MCU processor unit, a video output unit and a power supply unit 1; The video processing display module includes a signal processing unit, a video display unit and a power supply unit II; The connection cable is used to connect the video acquisition module and the video processing and display module, and transmit video channel switching signals and video channel control signals. 2. The split-type video acquisition and display device with signal automatic switching function according to claim 1, characterized in that, the video acquisition unit is used for video acquisition of images, and the video signal collected is divided into two channels of signals, one channel of video The signal is wired video, which is directly output through the connecting cable; the other video signal is output to the video output unit, and the video output unit converts the video signal into wireless video. 3. The split-type video acquisition and display device with signal automatic switching function according to claim 2, characterized in that, the MCU processor unit outputs logic timing, and power supply unit 1 is managed for power supply; the video channel switching of the judgment input signal, and output the video channel control signal to the video output unit and the connecting cable respectively. 4. The split-type video acquisition and display device with signal automatic switching function according to claim 3, characterized in that, the video output unit converts the video signal collected into wireless video, and judges the video channel output by the MCU processor Control signal, control wireless video transmission signal or prohibit transmission signal. 5. The split-type video acquisition and display device with signal automatic switching function according to claim 4, wherein the signal processing unit processes the video channel control signal from the video acquisition module, and selects the corresponding video receiving channel , to perform video processing on the received video signal; at the same time, output the logic sequence and manage the power supply unit II. 6. The split-type video acquisition and display device with automatic signal switching function according to claim 5, wherein the video signal processed by the signal processing unit is connected to the video display unit through a video signal line, and is used to connect the signal The video signal processed by the processing unit is displayed on the video display unit.

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