Content data storage
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 6, 2009
Grant Date -
Jan 15, 2004
app pub date -
Mar 28, 2001
filing date -
Mar 30, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A memory card (110) includes a memory (1415) to store encrypted content data, a license hold unit (1440) to store at least a portion of license information distributed by a distribution system, a plurality of authentication data hold units (1400.1, 1400.2), each storing a plurality of authentication data that are authenticated respectively by a plurality of public authentication keys KPma, KPmb common to the distribution system, and a switch (SW2) to selectively provide the data from the plurality of authentication data hold units outside of said recording apparatus according to a request external to the memory card (110).
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