Content usage device and network system, and license information acquisition method
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United States of America Patent
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May 25, 2010
Grant Date -
Jan 23, 2003
app pub date -
Jul 15, 2002
filing date -
Jul 17, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A content usage device includes (i) a license management unit that holds license information and (ii) a content output unit that uses a content in compliance with license information and outputs the content in at least one manner of a sound, video and data. The license management unit, upon receiving a request of license information from the content output unit, requests a license management unit of another content usage device to transfer the license information and acquires the license information, and passes the acquired license information to the content output unit. The content output unit uses a content in compliance with the license information passed from the license management unit.
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