Back to results
US 7,804,751 B2Granted
Method of distinguishing optical recording medium and apparatus of the same
AssigneeTaiyo Yuden Co., Ltd.
InventorHisayoshi Yata
Life of this patent
Estimating the term…
Abstract
One inventive aspect relates to a method which easily distinguishes copycat products that are difficult to distinguish by identifying only a media ID. A media ID and other attribute data are read out of a reference optical recording medium, and then a media ID and other attribute data are read out of an optical recording medium that is a target for separation. They are compared with each other in a data record processing section to determine whether data is data matched or not matched, and the result is displayed on a display section.
Claims11
A method of distinguishing a target optical recording medium and a reference optical recording medium having dye layers for recording, comprising:
- reading a media ID and other attribute data including conditions for recording recorded in a lead-in-area, Land pre-pit (LPP), or Address in pre-groove (ADIP) of the reference optical recording medium, said conditions for recording including laser output for recording and pulse conditions for recording;
- reading a media ID and other attribute data including conditions for recording recorded in a lead-in area, LPP, or ADIP of the target optical recording medium, said conditions for recording including laser output for recording and pulse conditions for recording;
- comparing the media ID and each item of the other attribute data of the reference optical recording medium item by item with the media ID and each item of the other attribute data of the target optical recording medium;
- displaying results of the comparison on a monitor;
- and
- if the media ID of the reference optical recording medium matches that of the target optical recording medium, but any item of the other attribute data of the reference optical recording medium does not match the corresponding item of the other attribute data of the target optical recording medium, judging that the dye layers of the target optical recording medium and the reference optical recording medium are different, thereby distinguishing the target optical recording medium and the reference optical recording medium.
3 more elements
An apparatus for distinguishing a first optical recording medium and a second optical recording medium having dye layers for recording, the apparatus comprising:
- a first recording and reproduction unit configured to read a media ID and other attribute data including conditions for recording recorded in a lead-in area, Land pre-pit (LPP), or Address in pre-groove (ADIP) of the first optical recording medium, said conditions for recording including laser output for recording and pulse conditions for recording;
- a second recording and reproduction unit configured to read a media ID and other attribute data including conditions for recording recorded in a lead-in area, LPP, or ADIP of the second optical recording medium, said conditions for recording including laser output for recording and pulse conditions for recording;
- a processing unit configured to compare the media ID and each item of the other attribute data read recorded in the lead-in area, LPP, or ADIP of the first optical recording medium item by item with the media ID and each item of the other attribute data read recorded in the lead-in area, LPP, or ADIP of the second optical recording medium, wherein if the media ID of the reference optical recording medium matches that of the target optical recording medium, but any item of the other attribute data of the reference optical recording medium does not match the corresponding item of the other attribute data of the target optical recording medium, it is judged that the dye layers of the target optical recording medium and the reference optical recording medium are different, thereby distinguishing the target optical recording medium and the reference optical recording medium;
- and
- a monitor for displaying results of the comparison by the processing unit.
2 more elements
An apparatus for distinguishing a target optical recording medium and a reference optical recording medium having dye layers for recording, the apparatus comprising:
- means for reading a media ID and other attribute data including conditions for recording recorded in a lead-in area, Land pre-pit (LPP), or Address in pre-groove (ADIP) of the reference optical recording medium, said conditions for recording including laser output for recording and pulse conditions for recording;
- means for reading a media ID and other attribute data including conditions for recording recorded in a lead-in area, LPP, or ADIP of the target optical recording medium, said conditions for recording including laser output for recording and pulse conditions for recording;
- means for comparing the media ID and each item of the other attribute data of the reference optical recording medium item by item with the media ID and each item of the other attribute data of the target optical recording medium, wherein if the media ID of the reference optical recording medium matches that of the target optical recording medium, but any item of the other attribute data of the reference optical recording medium does not match the corresponding item of the other attribute data of the target optical recording medium, it is judged that the dye layers of the target optical recording medium and the reference optical recording medium are different, thereby distinguishing the target optical recording medium and the reference optical recording medium;
- and
- means for displaying results of the comparison.
2 more elements
Dependencies are inferred from the claim text.