发明名称 |
PROCESS FOR INTENTIONAL DETERIORATION OF THE CONTENTS OF AN OPTICAL RECORDING MEDIUM |
摘要 |
The invention relates to the field of optical information recording. In order to prevent abusive or fraudulent use of storage media, the invention provides a process for intentional degradation of information by application of a laser power below the normal power for reading information recorded in super-resolution on the media. This process relies on the surprising observation that a laser power below the super-resolution read power produces an irreversible degradation of the information recorded. This observation has been made with regard to media composed of a three-layer structure comprising an InSb or GaSb layer between two ZnS/SiO<SUB>2 </SUB>layers. Application for protecting sensitive data.
|
申请公布号 |
US2008259778(A1) |
申请公布日期 |
2008.10.23 |
申请号 |
US20080060439 |
申请日期 |
2008.04.01 |
申请人 |
COMMISSARIAT A L'ENERGIE ATOMIQUE |
发明人 |
HYOT BERANGERE;ANDRE BERNARD;DESRE PIERRE;POUPINET LUDOVIC;CHATON PATRICK |
分类号 |
G11B7/00;G11B7/24 |
主分类号 |
G11B7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|