Method and apparatus for detecting protection of audio and video signals
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United States of America Patent
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-
Mar 12, 2002
Grant Date -
N/A
app pub date -
Jun 16, 1997
filing date -
Jun 16, 1997
priority date (Note) -
Reissued
status (Latency Note)
Importance
Abstract
A method and apparatus for protecting access to audio and/or video data is accomplished when data is received, where the data may be audio data and/or video data. Having received the data, it is interpreted to determine whether an embedded data access parameter is active. If so, an indication of the particular type of data access is generated. The data access parameter may control access to the data as at least one of: copy restrictions, viewing restrictions, and/or use restrictions. The indication is subsequently provided to a computer system such that unauthorized accessing, including unauthorized copying, of the video and/or audio data is prohibited.
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