Character stacker and stacking method for video tracking

A character superimposition and video tracking technology, which is applied to color TV parts, TV system parts, TVs, etc., can solve the problems of complex peripheral circuits, more discrete components, lower system stability, poor flexibility, etc., and achieve scalability Strong performance, perfect scalability, simple design effect

Inactive Publication Date: 2017-08-25
JILIN UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the problem that the existing character overlay device adopts the screen memory image mode, and the address of the display memory corresponds to the fixed position of the monitor, which has poor flexibility, and the peripheral circuit is complicated, and the stability of the system is reduced due to many discrete components. A character overlay and overlay method for video tracking are provided

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  • Character stacker and stacking method for video tracking
  • Character stacker and stacking method for video tracking
  • Character stacker and stacking method for video tracking

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specific Embodiment approach 1

[0028] Specific implementation mode one, combination Figure 1 to Figure 6 To explain this embodiment, the character overlay for video tracking includes an ARM processor module and a character overlay module; the character overlay module is composed of ten character overlay chips connected in series, and the ARM processor module includes characters Variable initialization module, serial communication module, mouse monitoring module, communication protocol analysis module, write array update module and font library control overlay module;

[0029] The ARM processor module is the core hardware unit of the character overlay, and the module is used to provide a hardware platform for running the character overlay program, and at the same time provide interfaces such as SPI, USB, network port, and serial port. The SPI interface is used to connect the character overlay module to realize the transmission of overlay information; the USB interface is used to connect a USB mouse to realize h...

specific Embodiment approach 2

[0056] Specific implementation mode two, combination Figure 7 with Figure 8 In this embodiment, the character superimposition method used for video tracking is described. The specific process of the method is:

[0057] 1. The character superimposing device is powered on and started, and runs the Linux system.

[0058] 2. After Linux starts, start the script, mount the written low-level driver, and then call the character overlay program.

[0059] 3. The program first initializes the character to be superimposed into a variable structure. Then start the serial port thread and the mouse thread. The serial port thread works in blocking mode and is mainly used to wait for the video tracker to send information. The mouse thread works in blocking mode and is used to wait for the mouse to move or click. Call the write array update module to update the data of the declared structure variable to the write array in a certain format. Initialize 10 pieces of MAX7456 to make it work.

[0060...

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Abstract

A character superimposing device and superimposing method for video tracking, relating to a character superimposing device and a superimposing method, which solves the problem that the existing character superimposing device adopts the screen storage image mode, and the address of the display memory corresponds to the fixed position of the monitor, which has the problem of poor flexibility , and the peripheral circuit is complex, and many discrete components reduce the stability of the system, including the ARM processor module and the character overlay module; the character overlay module uses ten character overlay chips for serial connection; the ARM The processor module includes a character variable initialization module, a serial port communication module, a mouse monitoring module, a communication protocol analysis module, an array write update module and a font control superimposition module; Character superimposition chips are connected in series, output four-way video, and have perfect scalability; the invention is convenient to use, and effectively realizes the character superposition device and method for real-time superimposition of tracking information in a video tracking system.

Description

Technical field [0001] The invention relates to a character superimposing device and method, in particular to a video superimposing display device for superimposing character information and graphics in a video tracker. Background technique [0002] The video tracker is an image information processing unit that processes the video signal from the TV camera in real time, extracts the target in the background image, and settles the coordinate deviation of the target center point relative to the video tracker's electrical axis, and sends the deviation in real time to The servo system realizes the closed-loop real-time tracking of the target. [0003] The character superimposer is a device that mixes character information into the video electronic signal, so that the specified graphics and characters are displayed in the specified position of the TV image. Character superimposing devices are widely used in TV tracking systems. In the TV tracking system, in order to facilitate the rel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/445
Inventor 顾海军王永杨凤攀梁辉赵晓晖
Owner JILIN UNIV
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