中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

18 records (took 0.025 seconds)

    1.
    发明专利
    未知

    公开(公告)号：BRPI0607958A2

    公开(公告)日：2010-11-03

    申请号：BRPI0607958

    申请日：2006-02-07

    Applicant: SONY CORP

    Inventor： FUJITA GORO ,  SHIMOUMA TAKASHI ,  NAKANO JUN ,  TAKAGAWA SHIGEKI ,  SAITO KIMIHIRO

    IPC: G11B7/004 ,  G11B20/10

    Abstract: In an optical disk (100), a substrate (101) has main data recorded in the form of a combination of pits and lands on one side thereof, and at least a reflective layer (102) and cover layer (103) are stacked on the substrate to cover the pits and lands on the substrate (101). To the optical disk (100), sub data is recorded in the form of marks formed by irradiating writing-power laser light to the reflective layer (102). The marks are formed so that reading signal level will be raised where the marks are formed while it will be lowered where the marks are formed in a counterfeit disk produced based on an authenticated disk, namely, the reading signal level where the marks are formed is different in polarity between in the authenticated and counterfeit disks. Further, in a player for the optical disk (100), discrimination is made between the authenticated and counterfeit disks by detecting the sub data recorded in the optical disk and judging whether the value of the detected sub data has been read at a correct polarity.

    Optical disc recording medium, reproduction device and method and recording device and method for the recording medium
    2.
    发明专利
    Optical disc recording medium, reproduction device and method and recording device and method for the recording medium 未知

    公开(公告)号：AU2006211660A1

    公开(公告)日：2006-08-10

    申请号：AU2006211660

    申请日：2006-02-07

    Applicant: SONY CORP

    Inventor： SHIMOUMA TAKASHI ,  NAKANO JUN ,  SAITO KIMIHIRO ,  FUJITA GORO ,  TAKAGAWA SHIGEKI

    IPC: G11B7/004 ,  G11B20/10

    Abstract: In an optical disk (100), a substrate (101) has main data recorded in the form of a combination of pits and lands on one side thereof, and at least a reflective layer (102) and cover layer (103) are stacked on the substrate to cover the pits and lands on the substrate (101). To the optical disk (100), sub data is recorded in the form of marks formed by irradiating writing-power laser light to the reflective layer (102). The marks are formed so that reading signal level will be raised where the marks are formed while it will be lowered where the marks are formed in a counterfeit disk produced based on an authenticated disk, namely, the reading signal level where the marks are formed is different in polarity between in the authenticated and counterfeit disks. Further, in a player for the optical disk (100), discrimination is made between the authenticated and counterfeit disks by detecting the sub data recorded in the optical disk and judging whether the value of the detected sub data has been read at a correct polarity.

    MAGNETO-OPTICAL RECORDING MEDIUM
    4.
    发明专利
    MAGNETO-OPTICAL RECORDING MEDIUM 未知

    公开(公告)号：CA2067945A1

    公开(公告)日：1992-11-17

    申请号：CA2067945

    申请日：1992-05-04

    Applicant: SONY CORP

    Inventor： TANAKA SHINTARO ,  SHIMOUMA TAKASHI ,  NAKAOKI ARIYOSHI ,  KANEKO MASAHIKO

    IPC: G11B11/10 ,  G11B7/24 ,  G11B11/105 ,  G11B11/14

    Abstract: A magneto-optical recording medium comprising a light-transmitting substrate 1 on which a dielectric layer 2, a memory layer 3 having perpendicular magnetic anisotropy, an intermediate layer 4 having in-plane magnetic anisotropy or slight perpendicular magnetic anisotropy, a recording layer 5 having perpendicular magnetic anisotropy, a dielectric layer 6, a metal layer 7, and a protective layer 8 are formed in a stacked form, the recording medium adapted to be magnetized for recording by a process comprising the step of modulating a first thermal condition and a second thermal condition according to a recording signal, wherein a stacked film 9 composed of the memory layer 3, the intermediate layer 4 and the recording layer 5 has a total thickness of from 1000 to 1500 .ANG., the dielectric layer 6 has a thickness of from 500 to 1500 .ANG., and the metal layer 7 has a thickness of from 250 to 1500 .ANG.. The magneto-optical recording medium permits a recording laser light to be used with an increased power margin, without causing any increase in the laser power level. Where the thickness of the memory layer is set in the range from 20 to 70 nm, an enhanced reproduction signal output is obtained.

    RECORDING DEVICE, RECORDING METHOD, DISC MANUFACTURING METHOD AND OPTICAL DISC RECORDING MEDIUM
    8.
    发明公开
    RECORDING DEVICE, RECORDING METHOD, DISC MANUFACTURING METHOD AND OPTICAL DISC RECORDING MEDIUM 审中-公开
    记录装置，记录过程中，用于生产媒体和光盘记录介质

    公开(公告)号：EP1884935A4

    公开(公告)日：2008-12-17

    申请号：EP06746309

    申请日：2006-05-11

    Applicant: SONY CORP

    Inventor： FUJITA GORO ,  MIKI TAKESHI ,  SHIMOUMA TAKASHI ,  ASHIZAKI KOJI ,  NAKAKURA MASATO

    IPC: G11B7/0045

    CPC classification number: G11B7/00452 ,  G11B7/006 ,  G11B7/268

    Abstract: A substrate is deformed into a raised shape by irradiating an optical disc recording medium with a laser beam at a prescribed laser power. As the substrate is deformed into the raised shape, a reflecting film laminated on the substrate is also deformed into the raised shape, and a reproduction signal level equivalent to that of a land portion can be obtained at a pit portion by the embodiment of the raised deformation. A reproduction signal level equivalent to that of the pit portion can be obtained at the land. At this time, since the raised deformation embodiment can be controlled by the power of the laser beam applied, the pit can be made into land and the land can be made into pit by setting the laser power. Thus, recording data can be rewritten in the optical disc recording medium wherein data is recorded by the combination of the pits and lands formed on the substrate.

Patent Agency Ranking