中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

31 records (took 0.022 seconds)

    13.
    发明专利
    未知

    公开(公告)号：DE68920716D1

    公开(公告)日：1995-03-02

    申请号：DE68920716

    申请日：1989-11-29

    Applicant: SONY CORP

    Inventor： OGAWA HIROSHI ,  KATSURAMOTO SHINJI ,  YAMAMOTO MASANOBU

    IPC: G11B7/0045 ,  G11B7/09 ,  G11B7/125 ,  G11B19/02 ,  G11B7/00

    Abstract: The present invention is concerned with control and detection of a laser beam for an optical disc recording/reproducing apparatus in which the intensity of a return laser beam reflected by an optical recording medium of a recording laser beam used for forming pits (P) and recording data on the recording medium during the recording mode is detected and an error signal including focusing and tracking error signals of the recording laser beam is formed on the basis of a detection output of the intensity of the return laser beam within a predetermined time interval ( tau ) before the pit (P) starts to be formed by the recording laser beam on the recording medium to control the recording laser beam, and in which, when recording data on the optical recording medium having sub-data previously recorded thereon as pre-grooves with wobbling, these sub-data are detected on the basis of the detection output of the return laser beam within said predetermined time interval ( tau ) or within a predetermined time interval other than said predetermined time interval ( tau ).

    OPTICAL DISK DEVICE
    14.
    发明专利
    OPTICAL DISK DEVICE 失效

    公开(公告)号：JP2001143304A

    公开(公告)日：2001-05-25

    申请号：JP2000300544

    申请日：2000-09-28

    Applicant: SONY CORP

    Inventor： KOBAYASHI SHOEI ,  KATSURAMOTO SHINJI

    IPC: H04N5/85 ,  G11B7/004 ,  G11B7/135 ,  G11B7/24 ,  G11B11/105 ,  G11B20/10

    Abstract: PROBLEM TO BE SOLVED: To make an optical disk device recordable a program for a long time by effectively utilizing characteristics of an optical disk. SOLUTION: Desired video signals and audio signals are recorded on the optical disk set to 120 mm in diameter and 10-117 μm in thickness of a light transmission layer with the shortest pit length or the shortest mark length of 0.3 μm or less via an optical system, the optical disk side of which is flat of 560 μm or less in a working distance by first and second aspherical lenses and 0.78 or more in numerical aperture.

    FOCUSING SERVO DEVICE AND FOCUS SETTING METHOD
    15.
    发明专利
    FOCUSING SERVO DEVICE AND FOCUS SETTING METHOD 失效

    公开(公告)号：JPH09231583A

    公开(公告)日：1997-09-05

    申请号：JP4135196

    申请日：1996-02-28

    Applicant: SONY CORP

    Inventor： KATSURAMOTO SHINJI ,  KANEKO KENJI ,  MIKAMI TATSURO

    IPC: G11B7/085

    Abstract: PROBLEM TO BE SOLVED: To provide a focusing servo device capable of exactly pulling in the focusing servo operation to a disk when a member reflecting a laser beam like an objective lens protection film, etc., exists between an objective lens and the disk. SOLUTION: When focusing search operation in the direction approaching an objective lens 16 to an optical disk 13 is performed by means of an objective lens actuator 17, since a first focus detecting output corresponds to an objective lens protection film 22, a focus detecting signal 44a is made to output by a second focus detecting output and the servo switch of a focusing servo circuit is turned on. When the focusing search operation in the direction moving the objective lens 16 further away from the optical disk 13 is performed, the focusing servo loop is turned on by the first detection of a focal position.

    Data recorder and recording method
    16.
    发明专利
    Data recorder and recording method 审中-公开

    公开(公告)号：JP2004265538A

    公开(公告)日：2004-09-24

    申请号：JP2003056238

    申请日：2003-03-03

    Applicant: Sony Corp ,  ソニー株式会社

    Inventor： KANEKO KENJI ,  CHIAKI SUSUMU ,  KATSURAMOTO SHINJI ,  HIRAI SHUJI

    IPC: G11B20/12 ,  G11B7/004 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18

    Abstract: PROBLEM TO BE SOLVED: To lighten burden of memory capacity without lowering the transfer rate of data even when alternation processing is performed with an ECC block unit.
    SOLUTION: A first block recorded in an optical disk 5 and a second block preceding the first block are converted to first encoded data and second encoded data respectively by making them correspond to one recording region on the optical disk 5 assigned with a block unit and compression-encoding them, and are stored in memories 19, 20. When data are recorded in some recording region on the optical disk, the first encoded data or the second encoded data correlated to the recording region and compression-encoded are selected in accordance with a defect detection result.
    COPYRIGHT: (C)2004,JPO&NCIPI

    OPTICAL DISK DEVICE
    17.
    发明专利
    OPTICAL DISK DEVICE 失效

    公开(公告)号：JP2001250228A

    公开(公告)日：2001-09-14

    申请号：JP2001035264

    申请日：2001-02-13

    Applicant: SONY CORP

    Inventor： OWA HIDEO ,  KOBAYASHI SHOEI ,  CHIAKI SUSUMU ,  KATSURAMOTO SHINJI ,  WATANABE TOSHIO ,  MORI HIDENORI ,  YAMAMOTO MASANOBU ,  SAITO MAKI

    IPC: G11B7/24 ,  G11B7/004 ,  G11B7/125 ,  G11B23/03

    Abstract: PROBLEM TO BE SOLVED: To secure the recording capacity which can obtain the same operability as a video tape recorder only by efficiently utilizing a function intrinsic to an optical disk device. SOLUTION: In irradiating a laser beam below the wavelength 680 [nm] through a light transmission layer of thickness 10-177 [μm] and accessing an optical disk with about a working distance 560 [μm] and an optical system with a numerical aperture of 0.7 or more, by the same nearly beam diameter as that of the optical system of the optical disk of the same nearly size, the laser beam is been made incident on the optical system to irradiate the optical disk.

    CHUCKING MECHANISM FOR OPTICAL DISK
    18.
    发明专利
    CHUCKING MECHANISM FOR OPTICAL DISK 失效

    公开(公告)号：JPH09306070A

    公开(公告)日：1997-11-28

    申请号：JP14642596

    申请日：1996-05-17

    Applicant: SONY CORP

    Inventor： KATSURAMOTO SHINJI ,  MORI HIDENORI ,  WATANABE TOSHIO

    IPC: G11B17/028

    Abstract: PROBLEM TO BE SOLVED: To prevent surface wobbling during the rotation of an optical disk chucked on a turntable. SOLUTION: This chucking mechanism includes a number of suction holes opened in the mounting surface of the optical disk of a turntable 17, a negative pressure means 37 for sucking air, an air route means 42 for connecting the negative pressure means 37 with the suction holes and an air switch means 43 provided in the air route means 42. By switching of the air switch means 43, a negative pressure is supplied to the turntable 17 via the air route means 42 and the optical disk mounted on the turntable 17 is stuck to the turntable 17.

    DATA RECORDING METHOD/DEVICE, DATA REPRODUCING METHOD AND RECORDING MEDIUM FOR DATA
    19.
    发明专利
    DATA RECORDING METHOD/DEVICE, DATA REPRODUCING METHOD AND RECORDING MEDIUM FOR DATA 失效

    公开(公告)号：JPH09190383A

    公开(公告)日：1997-07-22

    申请号：JP1819896

    申请日：1996-01-10

    Applicant: SONY CORP

    Inventor： KATSURAMOTO SHINJI ,  KOBAYASHI SHOEI

    IPC: G06F12/14 ,  G06F9/06 ,  G06F21/22 ,  G06F21/24 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0055 ,  G11B7/24 ,  G11B20/18

    Abstract: PROBLEM TO BE SOLVED: To easily and securely record identification data peculiar to a disk-like recording medium by forming a fault in a stage before a reflection film is formed so that a bit error which is difficult to correct is generated and recording information peculiar to the disk-like recording medium by means of a sector which is difficult to correct. SOLUTION: The fault in the stage before the reflection film is formed is formed so that the bit error which is difficult to correct is generated. Peculiar information is recorded in the disk-like recording medium by means of the sector which is difficult to correct. Namely, an optical disk 1 is formed so that a user data recording area 7 is managed in a sector unit. The plural sectors formed in the user data recording area 7 are discretely and selectively allocated to individual information recording sectors 8. In the optical disk 1, the individual information recording sectors 8 are selectively formed into the sectors which are difficult to error-corrected. Thus, peculiar data (namely, it is constituted by ID information and the like) can be recorded in the optical disk 1 with the setting of the sectors which are difficult to be error-corrected.

    DATA RECORDING DEVICE AND RECORDING METHOD DATA REPRODUCING DEVICE AND REPRODUCING METHOD
    20.
    发明专利
    DATA RECORDING DEVICE AND RECORDING METHOD DATA REPRODUCING DEVICE AND REPRODUCING METHOD 失效

    公开(公告)号：JP2000021093A

    公开(公告)日：2000-01-21

    申请号：JP18927798

    申请日：1998-07-03

    Applicant: SONY CORP

    Inventor： KATSURAMOTO SHINJI ,  CHIAKI SUSUMU ,  MATSUMOTO YOSHINORI

    IPC: G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/00

    Abstract: PROBLEM TO BE SOLVED: To increase operation speed of change processing performed when a defective sector is detected and to enable recording data without using capacity uselessly, when data is recorded in an optical disk. SOLUTION: When data is recorded in an optical disk, recorded data is divided into blocks corresponding to integral multiple of sectors of an optical disk, an error correction code is added for each block, data to which an error correction code is added is recorded making a fragment having the prescribed size corresponding to integral multiple of a block as a unit detecting whether a defect exists in a sector to be recorded or not. And when a defective sector is detected during recording data in a fragment, rerecording data to be recorded in the sector is performed in the succeeding sector in the fragment.

Patent Agency Ranking