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    1.
    发明专利
    未知

    公开(公告)号：DE60230115D1

    公开(公告)日：2009-01-15

    申请号：DE60230115

    申请日：2002-02-08

    Applicant: SONY CORP

    Inventor： TANAKA TOMIJI ,  NAKAO SHINICHI ,  ENDOH SOHMEI ,  ISHII TAMOTSU

    IPC: G11B7/085 ,  G11B7/24 ,  G11B7/007 ,  G11B7/09 ,  G11B7/095 ,  G11B11/105

    Abstract: A device and a method can judge the radial moving direction of light spots formed on the signal recording surface of an optical disc having grooves of two types that are different from each other in terms of depth and arranged along a recording track that is a land of the optical disc. The judging section of the device judges the moving direction of the main spot on the basis of binarized data of a difference signal of the main spot and binarized data of a difference signal of one of the side spots. With this arrangement, the moving direction of the light spots relative to a radial direction of the optical disc can be determined only by using difference signals without using any sum signal.

    3.
    发明专利
    未知

    公开(公告)号：DE3583438D1

    公开(公告)日：1991-08-14

    申请号：DE3583438

    申请日：1985-12-18

    Applicant: SONY CORP

    Inventor： ISHII TAMOTSU

    IPC: G11B7/135 ,  G06K1/12 ,  G06K7/10 ,  G06K7/14 ,  G06K17/00 ,  G11B7/00 ,  G11B7/0033 ,  G11B7/08

    Abstract: PCT No. PCT/JP85/00692 Sec. 371 Date Aug. 22, 1986 Sec. 102(e) Date Aug. 22, 1986 PCT Filed Dec. 18, 1985 PCT Pub. No. WO86/03874 PCT Pub. Date Jul. 3, 1986.A recording/reproducing apparatus for an optical recording card is disclosed, which comprises an optical recording card (10) provided with an optical recording medium (11), a recording light source (5) for recording an information signal on the recording medium (11), a reproduction light source (1) for reproducing the information signal recorded on the recording medium (11) and a line sensor (15) for reading out the information recorded on the recording medium (11) from the light beam reflected from the recording medium (11). A light path of a light beam emitted from the recording light source (5), a light path of a light beam emitted from the reproduction light source (1), and a light path of the light beam reflected by the recording medium (11) are independent of one another.

    4.
    发明专利
    未知

    公开(公告)号：BR0300852A

    公开(公告)日：2004-08-17

    申请号：BR0300852

    申请日：2003-03-31

    Applicant: SONY CORP

    Inventor： TOBITA MINORU ,  TERAOKA YOSHIYUKI ,  TANAKA TOMIJI ,  HATTORI MASATO ,  ISHII TAMOTSU

    IPC: G11B23/03 ,  G11B11/105 ,  G11B19/28 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/034 ,  G11B27/036 ,  G11B27/10 ,  G11B27/19 ,  G11B27/24 ,  G11B27/32 ,  G11B27/34 ,  G11B7/007

    Abstract: An information recording/reproducing apparatus for recording and reproducing information to and from a magneto-optical storage medium that includes a first magnetic layer for recording at least information, a second magnetic layer for regulating a switched connective force, and a third magnetic layer for shifting a magnetic wall of recorded markings for information reproduction. The three layers being stacked on a transparent substrate to make up the storage medium. The information recording/reproducing apparatus includes an optical head and a magnetic head. The optical head has a light source and an objective lens, the light source is configured to emit at least a laser beam with a wavelength of about 780 nm, the objective lens having a numerical aperture of about 0.45 and is configured to focus the laser beam from the light source into a beam spot for emission onto the magneto-optical storage medium. The magnetic head is for applying a recording magnetic field to the magneto-optical storage medium.

    APARATO DE GRABACION Y REPRODUCCION PARA GRABAR INFORMACION EN UN MEDIO DE ALMACENAMIENTO MAGNETO-OPTICO Y REPRODUCIR INFORMACION A PARTIR DE DICHO MEDIO.
    8.
    发明专利
    APARATO DE GRABACION Y REPRODUCCION PARA GRABAR INFORMACION EN UN MEDIO DE ALMACENAMIENTO MAGNETO-OPTICO Y REPRODUCIR INFORMACION A PARTIR DE DICHO MEDIO. 未知

    公开(公告)号：MXPA03002798A

    公开(公告)日：2004-09-03

    申请号：MXPA03002798

    申请日：2003-03-31

    Applicant: SONY CORP

    Inventor： ISHII TAMOTSU

    IPC: G11B11/105 ,  G11B23/03 ,  G11B19/28 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/034 ,  G11B27/036 ,  G11B27/10 ,  G11B27/19 ,  G11B27/24 ,  G11B27/32 ,  G11B27/34 ,  G11B7/135

    Abstract: Un aparato de grabacion/reproduccion de informacion para grabar informacion en un medio de almacenamiento magneto/optico y para reproducir informacion a partir de dicho medio de almacenamiento, que incluye una primera capa magnetica para grabar por lo menos informacion, una segunda capa magnetica para regular una fuerza de conexion conmutada, y una tercera capa magnetica para desplazar una pared magnetica de marcas grabadas para reproduccion de informacion. Las tres capas estan apiladas en un sustrato transparente para constituir el medio de almacenamiento. El aparato de grabacion/reproduccion de informacion incluye una cabeza optica y una cabeza magnetica. La cabeza optica tiene una fuente de luz y un lente objetivo, la fuente de luz esta configurada para emitir por lo menos un haz laser con una longitud de onda de aproximadamente 780 nm, el lente objetivo tiene una apertura numerica de aproximadamente 0.45 y esta configurado para enfocar el haz laser a partir de la fuente de luz en un punto de haz para su emision sobre el medio de almacenamiento magneto-optico. La cabeza magnetica es para aplicar un campo magnetico de grabacion al medio de almacenamiento magneto-optico.

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