Image display method and image display processor

Details Image display method and image display processor Image display method and image display processor

2004-02-03

2009-08-11

Chai, Longbit (Department: 2431)

Cryptography

Video cryptography

Copy protection or prevention

C380S201000, C380S202000, C380S204000, C382S100000, C382S232000

Reexamination Certificate

active

07574004

ABSTRACT:
A method and apparatus for directly and indirectly preventing illegal copying of works such as cinema or video images displayed on a display apparatus such as a theater screen or display unit. In particular, the method and apparatus prevents illegal copying of a displayed work wherein one seeks to use an image pickup apparatus, such as a video camera, to make a copy of the displayed work. Prevention of illegal copying is achieved by implementing one or more changeover modes to changeover a display operation condition so that a stripe pattern or the like is produced on a redisplayed image to deteriorate the quality of the redisplayed image.

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patent: 2002-519724 (2002-07-01), None
patent: 2002-314938 (2002-10-01), None
patent: 2003-169273 (2003-06-01), None

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