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    5.
    发明专利
    未知

    公开(公告)号：BRPI1002361A2

    公开(公告)日：2011-07-26

    申请号：BRPI1002361

    申请日：2010-01-12

    Applicant: SONY CORP

    Inventor： OYAMADA MITSUAKI ,  IWAMURA TAKASHI ,  UEDA DAISUKE ,  ENDO TAKEHIDE

    IPC: B41M5/26 ,  G03C1/72 ,  G11B7/24 ,  G11B7/244

    Abstract: An optical information recording medium includes a recording layer in which a recording mark formed of a cavity is formed in accordance with a light for recording, and which contains therein a compound having a skeleton expressed by the general formula (1): where R 1 , R 2 , R 3 , and R 4 are either hydrogen atoms or substituents.

    OPTICAL RECORDING/REPRODUCING METHOD AND OPTICAL RECORDING MEDIUM
    7.
    发明专利
    OPTICAL RECORDING/REPRODUCING METHOD AND OPTICAL RECORDING MEDIUM 未知

    公开(公告)号：CA2441559A1

    公开(公告)日：2003-07-22

    申请号：CA2441559

    申请日：2003-01-22

    Applicant: SONY CORP

    Inventor： IWAMURA TAKASHI ,  OYAMADA MITSUAKI ,  TAMADA SAKUYA ,  SABI YUICHI

    IPC: G11B7/004 ,  G11B7/00 ,  G11B7/005 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/246 ,  G11B7/007

    Abstract: The present invention provides an optical recording medium in which two or more information-recording layers are laminated for obtaining a high recording density, and also incidence of light and detection. of return light can be performed with high efficiency relating to an information-recording layer at a position distant from a light-incident side, thus having satisfactory recording and reproduction characteristics; and also provides an optical recording and reproducing method for performing at least recording or reproduction of information using this optical recording medium. The optical recording medium 10 includes a plurality of information-recording layers 21, 22 between one principal plane on which light can be incident and the other principal plane on the side opposite to this one principal plane, or which a first information-recording layer 21 nearest to the other principal plane is made to be a phase-modulation type information-recording layer and the other information-recording layer 22 is made to be a reflectance-modulation type information-recording layer. In this optical recording medium 10; recording or reproduction of information relating to the first information-recording layer 21 is performed by phase-modulation method and recording or reproduction of information relating to the other information-recording layer 22 is performed by reflectance-modulation method.

    8.
    发明专利
    未知

    公开(公告)号：BRPI1101849A2

    公开(公告)日：2012-09-25

    申请号：BRPI1101849

    申请日：2011-04-14

    Applicant: SONY CORP

    Inventor： OTA YO ,  IWAMURA TAKASHI

    IPC: G11B7/24

    Abstract: An optical information recording medium includes a recording layer, wherein the recording layer includes a thermoplastic resin and inorganic oxide particles dispersed in the thermoplastic resin.

    DISC-SHAPED OPTICAL RECORDING MEDIUM AND REPRODUCTION LIMIT METHOD THEREOF
    9.
    发明专利
    DISC-SHAPED OPTICAL RECORDING MEDIUM AND REPRODUCTION LIMIT METHOD THEREOF 未知

    公开(公告)号：CA2474153A1

    公开(公告)日：2003-07-31

    申请号：CA2474153

    申请日：2003-01-22

    Applicant: SONY CORP

    Inventor： SABI YUICHI ,  IWAMURA TAKASHI

    IPC: G06F12/14 ,  G11B7/00 ,  G11B7/005 ,  G11B7/007 ,  G11B20/00 ,  G11B7/24

    Abstract: Without drastically modifying the specifications of information recorded on a disc-shaped optical recording medium which has been processed conventionally by a dedicated player, the disc-shaped optical recording medium can limit reproduction by a disc drive belonging to a computer and prevent unauthorize d copying. A deformed pit string containing a special wobble and shift of a pi t string of an information track is provided as a read out limit area. In this read out limit area, during a low-speed rotation of the disc-shaped optical recording medium, follow-up is possible by optical pickup tracking control a nd it is possible to reproduce properly. However, during a high-speed rotation of the disc-shaped optical recording medium, it is impossible to perform follow - up by the optical pickup tracking control to perform reproduction.

    DISC-SHAPED OPTICAL RECORDING MEDIUM AND REPRODUCTION LIMIT METHOD THEREOF
    10.
    发明专利
    DISC-SHAPED OPTICAL RECORDING MEDIUM AND REPRODUCTION LIMIT METHOD THEREOF 未知

    公开(公告)号：CA2440052A1

    公开(公告)日：2003-07-31

    申请号：CA2440052

    申请日：2003-01-20

    Applicant: SONY CORP

    Inventor： SABI YUICHI ,  IWAMURA TAKASHI

    IPC: G11B7/0037 ,  G11B7/004 ,  G11B7/26 ,  G11B23/00 ,  G11B23/28 ,  G11B7/24

    Abstract: A disc-shaped optical recording medium which prevents unauthorized copy to protect a digital content and a reproduction limit method thereof. There is provided a CD that can be reproduced by an ordinary audio CD player but cann ot be read out by high-speed reproduction of a CD-ROM drive belonging to a computer. The CD (10) has a clam hole (14) formed at a position shifted from the center position with respect to the outer diameter of a disc substrate (12), so that the center of gravity of the disc substrate (12) is located at a position shifted from a rotation center of the clamp hole by a predetermined amount. Moreover, paint (16) is applied as an eccentric load to the label surface (10A) of the CD (10). Since the center of gravity and the rotation center of the CD (10) are eccentric, although it is possible to maintain stable rotation not affected by eccentricity at a low rotation speed, during a high-speed rotation, it is impossible to maintain stable rotation, disabling reproduction, which prevents unauthorized copy and protects a digital conten t.

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