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Method and apparatus for compression compatible video finger printing

A fingerprint and video image technology, applied in the field of video fingerprints and devices compatible with compression, can solve problems such as incompatible compression systems, and achieve the effect of great operational flexibility

Inactive Publication Date: 2004-10-27
MACROVISION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The object of the present invention is to provide a kind of fingerprint method and device, it has overcome the problem of described incompatibility compression system of aforementioned prior art fingerprint system, and also satisfies various such as can not be perceived by the observer but can be in effective video signal The required requirements for transmitting information in

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  • Method and apparatus for compression compatible video finger printing
  • Method and apparatus for compression compatible video finger printing

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Embodiment Construction

[0030] The present invention provides a method and device for inserting fingerprints into the following various program transmission media using signal fingerprint technology, such as digital video disk (DVD) or digital video recorder (DVCR) and broadcast and cable video transmission systems.

[0031] Compression systems, such as the aforementioned MPEG 1 and 2, rely on the presence of a high degree of intra- and inter-field correlation in the image.

[0032] The present invention employs the same basic spatial image distortion concept as disclosed in the aforementioned related application by J.O. Ryan entitled "Video Scrambling Method and Apparatus for Compatible Compression". However, in the present invention, the applied distortion is so small that it cannot be perceived by the viewer but can be monitored by appropriate circuitry.

[0033] The method and apparatus of the present invention will be described below. Imagine viewing a scene through a slightly curved piece of c...

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Abstract

Fingerprinting and fingerprint detection techniques are described which, unlike typical fingerprint systems used to conceal video signals, are compatible with all conceivable forms of signal compression systems while still allowing viewing of the video signal. The fingerprint technique is based on the principle of applying very slight local spatial distortion to the pixels in a video image, and the like, by means of selected warp patterns. Thus the technique provides means for conveying, within the video signal, selected information in the form of the fingerprint which is detectable electronically but which is not noticeable to a critical viewer who is watching the video signal. That is, the resultant fingerprinted video signal will appear to be identical to the undistorted video signal. The fingerprint detection technique provides for the recovery of the conveyed information which may comprise an instruction to prevent the fingerprinted video image from being copied, messages which allow identifying the source and date of an unauthorized copy of the video image, etc.

Description

[0001] Cross-Referenced Related Applications [0002] Applications related to this application are: the application US filed by John O. Ryan and Gregory C. Copeland entitled "Method and Apparatus for Copy Protection of Various Recording Media Using Video Fingerprint", authorized on August 19, 1997 5,659,613 ('613), U.S. Patent No. 5,513,260 ('260), issued April 30, 1996 to John O. Ryan, entitled "Method and Apparatus for Copy Protection of Various Recording Media," and entitled " Video Fingerprinting Method and Apparatus" US Application US 5,739,864 ('864) filed April 14, 1998 by Gregory C. Copeland. Also related to the present application is pending patent application publication number WO 97 / 46018 entitled "Compatible Compression Video Scrambling Method and Apparatus" filed by John O. Ryan. technical field [0003] This invention relates to fingerprinting techniques for video signals and the like, and more particularly to fingerprinting techniques for conveying selected in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26G06T3/00H04N5/913H04N7/08H04N7/081
CPCG06T3/0093H04N5/913G06T2201/0051G06T2201/0081G06T1/0057G06T3/18
Inventor 约翰·O·瑞安
Owner MACROVISION CORP
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