Signal recording/reproducing method and apparatus, signal record medium and signal
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United States of America Patent
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Mar 26, 2002
Issued Date -
N/A
app pub date -
Oct 14, 1998
filing date -
Aug 25, 1995
priority date (Note) -
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Abstract
A signal recording/reproducing method and apparatus, signal record medium and signal transmission/reception method and apparatus, whereby a signal recorded on a signal record medium can identified as being an original signal or a copied signal. A CPU 11 generates, at a pe-set time interval, an identification signal having a meaning at a pre-set time interval, and an identification signal addition circuit 3 adds the identification signal to the video signals and/or the audio signals. A sector forming circuit 5 and circuit components up to a recording/reproducing head 14 record the video signals and/or the audio signals and the ancillary identification signal on an optical disc 12.
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