Title:
記録担体上の集積回路のデータ保持
Document Type and Number:
Japanese Patent JP4164492
Kind Code:
B2
Abstract:
The invention relates to a record carrier ( 1 ) comprising an information area ( 2 ) for storing information, and an integrated circuit ( 3 ) comprising a storage unit ( 4 ) for storing additional information AK and Rights. The integrated circuit further comprises a one-time programmable memory ( 5 ) comprising a resurrection key RK, the one-time programmable memory having a substantially larger data retention time than the storage unit. If the additional information present in the storage unit is lost or has degenerated, it is possible to restore this information by using the resurrection key present in the one-time programmable memory.
Inventors:
Karlman Josephs AH M
Siep Cornelis M
Ackermans Antonius Hm
Siep Cornelis M
Ackermans Antonius Hm
Application Number:
JP2004519084A
Publication Date:
October 15, 2008
Filing Date:
June 13, 2003
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G11B20/10; G06F21/10; G06F21/60; G06F21/62; G06K17/00; G06K19/07; G06K19/073; G11B7/007; G11B7/24; G11B20/00
Domestic Patent References:
| JP11065933A | ||||
| JP2000285592A | ||||
| JP2000305853A | ||||
| JP2001118327A | ||||
| JP2002042414A | ||||
| JP2002512715A | ||||
| JP2001516913A |
Foreign References:
| WO2000074046A1 |
Attorney, Agent or Firm:
Susumu Tsugaru
Akihiko Miyazaki
Fueda Shusen
Akihiko Miyazaki
Fueda Shusen
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