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Method and apparatus of error correction in wireless visual communication system

A communication system and error technology, applied in the direction of digital video signal modification, image communication, two-way working system, etc., can solve the problems of large amount of calculation, large resource consumption, etc., and achieve the effect of reducing the amount of calculation

Inactive Publication Date: 2006-07-19
LG ELECTRONIC (HUIZHOU) CO LTD
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Problems solved by technology

[0005] However, as mentioned above, relying on the existing technology to judge the correlation degree of surrounding images or previous images requires a large amount of calculation, so the consumption of resources is relatively large when performing real-time visual communication, which is its shortcoming

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  • Method and apparatus of error correction in wireless visual communication system
  • Method and apparatus of error correction in wireless visual communication system
  • Method and apparatus of error correction in wireless visual communication system

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Embodiment Construction

[0025] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] FIG. 1 is a schematic diagram showing the configuration of a device for correcting screen errors using an error concealment map (ECM) in a wireless visual communication environment according to an embodiment of the present invention; FIG. 2 is a schematic diagram showing the ECM according to an embodiment of the present invention.

[0027] Referring to FIG. 1 , the device for correcting frame errors using ECM in a wireless communication environment includes: a motion vector storage device 100 , a ping-pong buffer 110 , and a motion vector average calculation device 120 .

[0028] The motion vector storage means 100 described above stores motion vectors of previous images.

[0029] The above-mentioned ping-pong buffer 110 stores the ECM value. Here, the above-mentioned ECM is a mapping table for judging whether an error has occurred in a...

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Abstract

The invention relates to a method for correcting the mistake in the wireless virtual communication system and relative device, which can correct the mistake in the error block. The method comprises: using the error block as center to select some nearby blocks; using ECM to select some blocks without error from the blocks around said error blocks; extracting the motion vectors of selected nearby blocks and around blocks; calculating the average valve of extracted motion vector; and using said average valve to correct the error of said error blocks. The invention can reduce the calculation quantity of hidden error; therefore it can process the error in the real-time virtual communication.

Description

(1) Technical field [0001] The present invention relates to an error correction method and device in a wireless visual communication system, especially refers to using an error concealment map (ECM: Error Concealment Map hereinafter referred to as ECM) in the process of error concealment, and using the motion vector of the current image without errors A method and device for correcting errors in a wireless visual communication system for correcting errors with motion vectors of previous images. (2) Background technology [0002] Fragmentation of the screen caused by errors in the wireless visual communication process is the most important reason for reducing the credibility of users. Therefore, even if a lot of effort is made to transmit data with minimal errors in the network environment, it is impossible to transmit after the errors are completely corrected. So just continue to study some methods of correcting errors: including checking the errors on the network side and ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/68H04N7/14H04N19/895
Inventor 金庾浩
Owner LG ELECTRONIC (HUIZHOU) CO LTD
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