Distributed image display method

An image display and distributed technology, applied in the direction of image communication, television, electrical components, etc., can solve the problems of large network load, poor synchronization, and the time of receiving data is far from the time of receiving data, so as to improve the synchronization, The effect of ensuring synchronization and reducing load

Inactive Publication Date: 2008-11-19
GUANGDONG VTRON TECH CO LTD
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Problems solved by technology

The disadvantage of this solution is that: because the entire image data is transmitted, the network bandwidth requirement is relatively high; when there are many clients, the image server has to send all data to each client, resulting in a large network load; At the same time, due to the large amount of data transmission in distributed display, when the image server transmits massive data to the client in turn, the time when the first client receives data is far from the time when the last client receives data. As the number of clients increases, this problem will become more and more serious, resulting in low synchronization of the technical soluti

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[0027] The following describes the present invention in further detail with reference to the embodiments and the drawings, but the implementation of the present invention is not limited to this.

[0028] Such as figure 1 As shown, in this distributed image display system, the image server is connected to multiple display terminals through network devices (for example: hubs, routers, switches, etc.).

[0029] As shown in the diagram, the workflow of this distributed image display system includes the following steps:

[0030] (1) According to the size of the custom image sub-block, the image server equally divides the entire image into several image sub-blocks, and then encodes each image sub-block; the size of the custom image sub-block is 8×8, 16 ×16, 32×32 or 64×64, preferably 8×8; because the smaller the block, the less data redundancy is when the entire image is divided into blocks, but it will have a negative effect to a certain extent, because each small block is in the tran...

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Abstract

The invention provides a distribution image display method which includes the steps that (1) an image server divides the whole image into a plurality of image sub-blocks equally according to the size of the user-defined image sub-block; and then each image sub-block is encoded; (2) the client sends a request; the image server sends the encoded data of all the image sub-blocks contained in the request region to the corresponding client according to the request region of the client; when the encoded data is sent, the image server sends the redundancy data to the client; (3) the client receives data from the server, including the encoded data and the redundancy data and displays the image data of the former frame. The distribution image display method can reduce the CPU load and the network load of the image server and guarantee the synchronism of the distribution image display.

Description

technical field [0001] The invention relates to a distributed image display technology, in particular to a distributed image display method. Background technique [0002] In the prior art, there are the following two solutions for distributed image display: [0003] The first method is to encode and send the entire image. The image server encodes the entire image once to obtain the encoded data of the entire image, and then sends the same data to all clients, and the clients crop and display it separately. The disadvantage of this solution is that: because the entire image data is transmitted, the network bandwidth requirement is relatively high; when there are many clients, the image server has to send all data to each client, resulting in a large network load; At the same time, due to the large amount of data transmission in distributed display, when the image server transmits massive data to the client in turn, the time when the first client receives data is far from the...

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Application Information

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IPC IPC(8): H04L29/06H04N7/26H04N19/112H04N19/127H04N19/176
Inventor 冯海勇谷新征蔡才冠刘亚平
Owner GUANGDONG VTRON TECH CO LTD
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