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    1.
    发明专利
    未知

    公开(公告)号：AT533152T

    公开(公告)日：2011-11-15

    申请号：AT07745419

    申请日：2007-06-15

    Applicant: SONY CORP ,  KOBE STEEL LTD

    Inventor： SAKAMOTO TETSUHIRO ,  NAKANO JUN ,  OKAWA NAOKI ,  NAKAI JUNICHI ,  TAUCHI YUKI

    IPC: G11B7/258 ,  G11B7/24

    Abstract: A pirated optical recording medium may be determined which is produced by physically transferring a shape of pits and lands formed on a substrate of an optical recording medium. The optical recording medium is provided with excellent weatherability and long-term storage reliability. A reflective film formed of an Ag alloy film of Ag 100-x-y X x Cu y , where X is at least one element among Ti, W, Ta, V, Mo, Nb and Zr, is formed on a substrate on which main data is recorded with a combination of pits and lands. A mark may be formed so that a reproduction signal level in the recorded mark of auxiliary data write once recorded on the reflective film is increased, and a reproduction signal level is decreased in an optical recording medium prepared by physically transferring the surface shape of the pits and lands of the substrate. A pirated optical recording medium may be determined in this manner.

    2.
    发明专利
    未知

    公开(公告)号：DE69938695D1

    公开(公告)日：2008-06-26

    申请号：DE69938695

    申请日：1999-07-08

    Applicant: SONY CORP

    Inventor： ONO TOSHITSUGU ,  KONDO HIROFUMI ,  SAKAMOTO TETSUHIRO

    IPC: G11B7/24 ,  C09K3/16 ,  G11B7/254 ,  G11B7/257

    Abstract: An optical recording medium incorporating a supporting body; a recording portion which is formed on either main surface of the supporting body and on which a signal is recorded; and a light permeable layer formed on the recording portion, wherein light is applied from a position adjacent to the light permeable layer to record/reproduce a signal, and carboxylic acid amine salt expressed by general formula (1) and/or general formula (2) is held on the surface which is irradiated with light where n is an integer from 1 to 3, each of R1 and R2 is hydrogen or a hydrocarbon group, R3 is a hydrocarbon group and Rf is a perfluoroalkyl group having three or more carbon atoms, where at least either of R1 and R2 is perfluoroalkyl group having three or more carbon atoms, at least any one of R1, R2, R3, R4 and R5 is hydrocarbon group having 12 or more carbon atoms and the rest of them are hydrogen or hydrocarbon group.

    METHOD FOR THERMAL TREATMENT JUDGMENT ON MAGNETO-OPTICAL INFORMATION RECORDING MEDIUM AND DEVICE FOR THERMAL TREATMENT JUDGMENT
    6.
    发明公开
    METHOD FOR THERMAL TREATMENT JUDGMENT ON MAGNETO-OPTICAL INFORMATION RECORDING MEDIUM AND DEVICE FOR THERMAL TREATMENT JUDGMENT 审中-公开
    方法热处理评估在磁光信息记录热处理评估介质和设备

    公开(公告)号：EP1662500A4

    公开(公告)日：2008-11-19

    申请号：EP04772200

    申请日：2004-08-19

    Applicant: SONY CORP

    Inventor： TANAKA YASUHITO ,  MIKI TAKESHI ,  SAKAMOTO TETSUHIRO ,  FUJITA GORO ,  FUJIIE KAZUHIKO

    IPC: G11B11/105

    CPC classification number: G11B11/10582

    Abstract: For thermal treatment a magneto-optical disk (33) is irradiated with a laser beam of a predetermined power from an LD (11). After the thermal treatment, the region where the thermal treatment is performed is irradiated with a laser beam with less power than that for the thermal treatment. The reflected light of the less-power laser beam is incident on optical sensors (24, 26), and the reflected light intensities of the P-wave and S-wave are detected. Using the reflected light intensities of the P-wave and S-wave, a difference detection circuit (27) detects the level of the magneto-optical signal corresponding to the region where the thermal treatment is performed. A controller (28) judges whether or not the magneto-optical signal level detected by the detection circuit (28) is within the allowable range. If, out of the range, the laser beam power for the thermal treatment is adjusted, the magneto-optical disk treatment is stopped, or a message representing the measure is displayed.

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