Optical disc having RFID tag, optical disc apparatus, and system for preventing unauthorized copying
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United States of America Patent
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Jan 8, 2008
Grant Date -
Dec 8, 2005
app pub date -
May 26, 2005
filing date -
May 26, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an optical disc having an RFID tag, disc control information needed for control of reproduction of the content recorded in the disc body of the optical disc is stored in the RFID tag. Thereby, even if the content recorded in the disc body is illegally copied in some way, common optical disc apparatus incapable of reading RFID tags cannot read and copy the disc control information stored in the RFID tag. Accordingly, unauthorized copying of the content recorded on the optical disc can be reliably prevented without the use of special cryptographic technology.
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