Invention Grant
US07784103B2 Method and apparatus for storing copy protection information separately from protected content 有权
将复制保护信息与受保护内容分开存储的方法和装置

Method and apparatus for storing copy protection information separately from protected content
Abstract:
A copy protection system and method enabling storage of copy protection information separately from protected content is disclosed. One embodiment includes a mechanism for playing a recording medium, the recording medium having stored thereon a digital content file and a copy protection information file, the mechanism producing a digital content signal from the digital content file and a copy protection signal from the copy protection file; a digital to analog converter operatively connected to the mechanism for converting the digital content signal to an analog signal; a copy protection detector connected to the mechanism for detecting a copy protection trigger present in the digital content signal; and a signal modifier connected to the copy protection detector for modifying the analog signal to include the copy protection signal in response to detection of the copy protection trigger.
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