Method and apparatus for recording manufacturer information on a recording medium and for determining whether the manufacturer information is effective
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United States of America Patent
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May 21, 2013
Grant Date -
Oct 4, 2007
app pub date -
Jun 12, 2007
filing date -
Jun 22, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A recording medium and a recording apparatus store manufacturer information to support specific functions for each manufacturer and a method therefore. A reproducing apparatus reproduces the manufacturer information to support specific functions. When the recording apparatus modifies the contents of the recording medium, the manufacturer's identification code is recorded. The recording apparatus and the reproducing apparatus checks the identification code on the recording medium before using its own manufacture information item for some specific function. Also, a time required to determine whether the manufacturer information items are effective is reduced.
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