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Video synchronization device and method

A video synchronization and image synchronization technology, which is applied in the direction of TV, color TV, color TV parts, etc., can solve the problems of poor fluency and delay cost, and achieve the goal of avoiding display delay, reducing cost and saving storage components Effect

Active Publication Date: 2020-02-28
GUANGZHOU AVA ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome at least one defect of the splicing screen synchronization method in the prior art, such as poor fluency, delay, and high cost, the present invention clearly provides a video synchronization device and method. The technical solution adopted in the present invention is as follows

Method used

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Embodiment 1

[0082] Such as figure 1 As shown, the splicing screen 200 is a 2×2 splicing screen composed of display screens A, B, C, and D. The video image of the video image source is output to the video synchronization device 100 of the present invention, and after being processed by the video synchronization device 100, it is output to the display screens A, B, C, and D respectively, and the display screens A, B, C, and D are spliced ​​to form a A complete picture of the splicing screen 200. Wherein, the video synchronization device 1 includes: an image synchronization module and a reference module. Exemplary, figure 1 There are four image synchronization modules in the video synchronization device 1, which are respectively image synchronization modules 1-4.

[0083] Such as figure 2 as shown, figure 2 The connection relationship between the internal components of the image synchronization module and the reference module is shown in detail. Since the internal structure of each im...

Embodiment 2

[0105] Corresponding to the video synchronization device in Embodiment 1, the present invention also proposes a video synchronization method, which is similar to Embodiment 2, and the overall flow chart of the method is as follows Figure 5 shown.

[0106] A video synchronization method, the method is used in a video synchronization device, the video synchronization device includes: a controllable clock unit, an image processing unit; the controllable clock unit can generate multiple frequencies within a preset range The clock signal of; Described method comprises the following steps:

[0107] S1. Determine the reference frame;

[0108] S2. Obtain the data frame sent by the image processing unit, and calculate the data frame offset value between the obtained data frame and the reference frame;

[0109] S3. Adjust the frequency of the clock signal generated by the controllable clock unit according to the data frame offset value;

[0110] S4. The image processing unit generat...

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Abstract

The invention relates to a video synchronization device and method. The video synchronization device comprises an image synchronization module, a reference module and a management module, and the image synchronization module comprises a data frame offset calculation unit, an image processing unit, a control mode instruction generation unit, a control mode conversion unit and a controllable clock unit. The data frame offset calculation unit calculates a data frame offset value between an obtained data frame and a reference frame, the control mode generation instruction unit generates a controlmode instruction according to the data frame offset value, the control mode conversion unit adjusts the clock signal frequency of the controllable clock unit according to the control mode instruction,and the image processing unit receives the video data, generates the data frame according to the clock signal frequency in an image output range allocated by the management module, and sends the dataframe to the display screen. According to the present invention, the frames of the image processing units are synchronized by adjusting the clock frequency, the frame insertion or frame discarding isavoided, and the display delay of a spliced screen is avoided.

Description

technical field [0001] The present invention relates to the field of splicing screen video processing, more specifically, a video synchronization device and method. Background technique [0002] The splicing display is also called a splicing wall, which splices multiple display screens together as a super-large screen for image display. After the video data is processed, it is output and displayed on the corresponding display screen. The images displayed on each display screen are spliced ​​together to form a complete picture, so the synchronization requirements between each display screen are very high. [0003] The existing synchronous display of splicing screens is mostly realized by a distributed codec processing system, which is based on network frame buffer technology and uses synchronous time stamps to realize the synchronous display of each video data on the large-screen splicing screen. The method transmits the frame data packet to the network frame buffer unit of ...

Claims

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Application Information

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IPC IPC(8): H04N5/04G06F3/14
CPCH04N5/04G06F3/1446
Inventor 欧俊文关本立
Owner GUANGZHOU AVA ELECTRONICS TECH CO LTD
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