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Separating and replaying method for video frequency image

A video image, non-normal technology, applied in the field of video image splitting and reproduction, can solve the problems of increasing the cost of compression, not finding the technology to protect the intellectual property rights of compressed video images, increasing the cost of video compression, and achieving intellectual property rights. protective effect

Inactive Publication Date: 2005-08-03
BEIDA QINGNIAO INTEGRATED CIRCUIT BEIJING
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Problems solved by technology

The main disadvantage of using encryption or scrambling is that the algorithm can be cracked. In theory, there is no encryption or scrambling algorithm that cannot be cracked, only the cost.
Another disadvantage of using encryption or scrambling is that it increases the cost of compression: in order to encrypt the compressed video image data, special encryption software and hardware are required, which virtually increases the cost of video compression
[0007] Through the search of Chinese patents, no technology specifically for the protection of intellectual property rights (copyrights) of compressed video images has been found

Method used

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  • Separating and replaying method for video frequency image
  • Separating and replaying method for video frequency image
  • Separating and replaying method for video frequency image

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Embodiment Construction

[0022] In order to remove the redundant information in the video image to the greatest extent, the popular compression coding schemes (such as MPEG2 and MPEG4) make full use of the spatial correlation and temporal correlation of the video image to encode and form several reference frames and non-reference frames. When the decoder decodes the compressed video image, the non-reference frame needs to refer to one or several adjacent frames for decoding. If the image data of the reference frame is lost or an error occurs, the decoded video image will be wrong (some The images in some areas do not match the images in adjacent areas, such as our common mosaic phenomenon), and cannot be viewed normally. Considering that video compression image data may be lost or erroneous during storage and transmission, decoders usually use certain error correction algorithms to restore lost or erroneous reference frame video image data, but if lost or erroneous video If the amount of image data is...

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Abstract

This invention provides a method for the splitting and reproduction of video images including: the video image forms several reference frames and non-reference frames by encoding, among which, the splitting refers to extract a part or total compressed video image data in the above total or part reference frames, the extracted video compressed data are key contents, others are basic contents, which are stored or transmitted separately, a user decoder can split-join the key and basic contents to a complete original video image to play it if getting them the same time, if it cannot get the key content, then the decoded recovered image is wrong, which can protect the copyright of video images effectively not needing extra cipher / decipher algorithms.

Description

technical field [0001] The invention belongs to the technical field of video image processing, and in particular relates to a video image splitting and reproduction method capable of protecting the video image copyright. Background technique [0002] The purpose of video compression is to reduce the video data rate on the premise of ensuring the visual effect, and at the same time reduce the video data storage volume and recording density. The spatial correlation and temporal correlation existing in the video image make a large amount of redundant information be stored in the video image data. The purpose of video compression is to remove these redundant information, save only a small amount of irrelevant information in the video image and transmit it, so that the storage space of the video image and the bandwidth occupied during transmission can be greatly saved. Before playing, the compressed video image needs to be decompressed (generally called decoding), and the decode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/462H04N21/4627
Inventor 高峰陈立力杨仕清葛海涛
Owner BEIDA QINGNIAO INTEGRATED CIRCUIT BEIJING
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