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Method and system for efficient transmission of anti-camcorder video

A video recorder and video stream technology, applied in the field of video stream transmission bit rate, to achieve the effect of overcoming defects and efficient transmission

Inactive Publication Date: 2011-05-25
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, transfer bit rates can be as high as 8 or 9 gigabytes per second or more

Method used

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  • Method and system for efficient transmission of anti-camcorder video
  • Method and system for efficient transmission of anti-camcorder video
  • Method and system for efficient transmission of anti-camcorder video

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Embodiment Construction

[0019] The present invention advantageously provides methods, apparatus and systems for providing bit rate efficient transmission of video streams including anti-camcorder measures. Although the invention will be described primarily in the context of an encoder / decoder system and an encoding device for transmitting an anti-camcorder video stream, the specific embodiments of the invention should not be taken as limiting the scope of the invention. Those skilled in the art will appreciate and learn from the teachings of the present invention that the concepts of the present invention may be advantageously applied to the transmission of other types of data. For example, the inventive concepts may be implemented in data files sent between devices in a local area network, wide area network, or the like.

[0020] The functions of the various elements shown in the figures may be provided through the use of dedicated hardware as well as hardware capable of executing the software, in a...

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PUM

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Abstract

In embodiments of the present principles, the transmission bit rate of a video stream including anti-camcorder measures can be reduced while maintaining anti-camcorder effects and video quality. In one embodiment, a segmentor is included to segment a portion of a frame, such as a pixel, into most significant bits (MSB) and least significant bits (LSB). A representative LSB can be generated and employed for concatenation with each MSB value of a sample set of portions of frames. Use of the representative LSB values in lieu of LSB values of the sample set enables an efficient transmission bit rate, as the representative LSB value can have less bits than the LSB of an original portion and can be reused with a plurality of MSB values of a sample set of portions.

Description

technical field [0001] The present invention relates generally to bit rate efficiency and, more particularly, to methods, apparatus and systems for reducing the transmission bit rate of anti-camcorder modulated video streams. Background technique [0002] In recent years, the unauthorized copying and distribution of films has caused serious revenue losses to filmmakers. Pirated copies of newly produced films are usually obtained by recording the presentation of the film in theaters with a camcorder. In order to curb pirated copies, anti-camcorder measures including high frame display rates have been developed. However, high frame display rates result in high transmission bit rates between the various components in the video projection system. [0003] For example, in high quality digital display systems, with a display bit depth of typically twelve bits for each red, green and blue component, the display resolution is typically two million pixels or higher. Oftentimes, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/913H04N9/31
CPCH04N2005/91357H04N5/913H04N2005/91392H04N7/167
Inventor 唐纳德·亨利·威利斯
Owner THOMSON LICENSING SA