RECORDING AND REPRODUCING DEVICE AND METHOD

    公开(公告)号:JPH09237421A

    公开(公告)日:1997-09-09

    申请号:JP4440896

    申请日:1996-03-01

    Applicant: SONY CORP

    Abstract: PROBLEM TO BE SOLVED: To accurately regenerate a wobble address and a synchronizing mark. SOLUTION: Outputs of light receiving elements 61A and 61B bisected in the track direction are added up in an adder 64, and are subtracted from each other in a subtractor 65. An output of the subtractor 65 is normalized by dividing an output of the subtractor 65 by the output of the adder 64 in a divider 66. A synchronizing mark component in a comparatively high frequency band is extracted by a hand pass filter 67, and a wobble address component in a comparatively low frequency band is extracted by a band pass filter 68.

    HEAD DEVIATION MEASURING METHOD AND DEVICE AND DATA RECORDING AND REPRODUCING METHOD AND DEVICE

    公开(公告)号:JPH08124137A

    公开(公告)日:1996-05-17

    申请号:JP21066395

    申请日:1995-08-18

    Applicant: SONY CORP

    Abstract: PURPOSE: To obtain a data recording and reproducing device capable of easily measuring the deviation between a recording head and a reproducing head and capable of correctly reproducing data even though the deviation is present. CONSTITUTION: Before an actual data recording is performed, a controller 11 supplies test data to an encoding circuit 12. The test data are recorded in sectors #1 to #11 of a position deviated from the center of a track by a δ. The controller 11 supplies modulated data to a D/A converter 19. An adder 9 supplies the modulated signal from the D/A converter 19 as it is to a VCM circuit 5. A reproducing head 7 outputs a reproduced signal by running while wobbling by the modulated signal. The controller 11 detects the deviation δbetween a recording head 6 and a reproducing head 7 based on the presence or absence of errors of respective sectors from an error correcting circuit 16. At the time of an actual data recording or data reproducing, a tracking servo is applied by making the deviation δ an offset.

    MAGNETIC DISC AND ITS MANUFACTURE
    46.
    发明专利

    公开(公告)号:JPH07153046A

    公开(公告)日:1995-06-16

    申请号:JP29550893

    申请日:1993-11-25

    Applicant: SONY CORP

    Abstract: PURPOSE:To manufacture a magnetic disc easily and in a mass-production basis by a method wherein a magnetic layer is formed on the surface of a nonmagnetic substrate which an information uneven pit row is formed and the parts of the magnetic layer on the bottom surfaces of the uneven pits and the parts of the magnetic layer on the upper surfaces of the uneven pits are magnetized in respective directions opposite to each other. CONSTITUTION:An information uneven pit row SL is formed on a nonmagnetic substrate 11. A magnetic layer 12 is formed on the surface of the substrate 11 on which the information uneven pit row SL is formed including the bottom surfaces, i.e., the recessed parts 14, of the information uneven pits and the upper surfaces, i.e., the protruding parts 13, of the information uneven pits. Then the parts of the magnetic layer 12 on the recessed parts 14 of the information uneven pits and the parts of the magnetic layer 12 on the protruding parts 13 of the information uneven pits are magnetized in respective directions (m1) and (m2) opposite to each other. The information is magnetically read out. With this constitution, a pickup apparatus which is simple in structure and low in cost can be obtained and hence the power consumption can be saved.

    PATTERN DATA GENERATION CIRCUIT
    47.
    发明专利

    公开(公告)号:JPH06203478A

    公开(公告)日:1994-07-22

    申请号:JP36000792

    申请日:1992-12-29

    Applicant: SONY CORP

    Abstract: PURPOSE:To form a pattern with high degree of freedom in the case of forming a format pattern on the original disk of a disk. CONSTITUTION:A pattern data generation device is used for a laser cutting device for emitting a laser beam on/off modulated on a photoresist film formed on a circular substrate being the original disk of a stamper for the base of a magneto-optical disk or a magnetic disk and laser plotting a preformat pattern. This device is constituted of a relative position detection circuit 21 detecting a relative position (rotation angle theta) between the circular substrate and a cutting head in a laser cutting device, a coordinate data generation circuit 22 outputting coordinate data based on the detected data from the relative position detection circuit 21 and a data line generation circuit 23 serially outputting a data line based on the coordinate data from the coordinate data generation circuit 22.

    Communication method, communication device, and system of the same
    48.
    发明专利
    Communication method, communication device, and system of the same 审中-公开
    通信方法,通信设备及其系统

    公开(公告)号:JP2010213304A

    公开(公告)日:2010-09-24

    申请号:JP2010092498

    申请日:2010-04-13

    Abstract: PROBLEM TO BE SOLVED: To provide a communication method which allows positional information of other mobile terminal devices to be provided to another mobile terminal device without spoiling individual privacy.
    SOLUTION: When a mobile phone 4
    1 sends a positional information request to a mobile phone device 4
    2 and in the mobile phone 4
    2 transmission of positional information to the mobile phone device 4
    1 is permitted, the mobile phone 4
    2 transmits positional information of the mobile phone 4
    2 obtained using a satellite group 3 for GPS to the mobile phone 4
    1 . The mobile phone device 4
    1 outputs a display screen specifying the position of the mobile phone 4
    2 on a map, according to the received positional information.
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种通信方法,其允许将其他移动终端设备的位置信息提供给另一移动终端设备,而不会破坏个人隐私。 解决方案:当移动电话4 1 向移动电话设备4 2 和移动电话4 2 发送位置信息请求 >允许将位置信息发送到移动电话装置4 1 ,移动电话4 2发送移动电话4 2 的位置信息 使用GPS的卫星组3获取到移动电话4 。 根据接收的位置信息,移动电话设备4 1 在地图上输出指定移动电话4的位置的显示画面。 版权所有(C)2010,JPO&INPIT

    ROUTER APPARATUS
    50.
    发明专利

    公开(公告)号:JP2002271360A

    公开(公告)日:2002-09-20

    申请号:JP2001066737

    申请日:2001-03-09

    Applicant: SONY CORP

    Abstract: PROBLEM TO BE SOLVED: To provide a router apparatus that can simply and reliably guarantee security. SOLUTION: The router apparatus is arranged on an upper surface 15a of a case 15 that can be confirmed from appearance, and has a physical switch for connecting and disconnecting WAN(Wide Area Network) and LAN(Local Area Network), thus reliably disconnecting the LAN from the WAN without carrying out internal setting by software. Also, even a user who does not have expertise can easily perform the disconnection.

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