中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

3 records (took 0.019 seconds)

    1.
    发明专利
    未知

    公开(公告)号：DE69415456T2

    公开(公告)日：1999-05-12

    申请号：DE69415456

    申请日：1994-03-04

    Applicant: SONY CORP

    Inventor： WATANABE KENJIRO ,  TAKEDA TORU ,  SEKO SATORU ,  KAWAZOE KAZUSHIGE ,  MUTO TAKAYASU ,  MORITA OSAMU ,  HAYASHI NOBUHIRO ,  ISHIDA TAKEHISA ,  ISHIOKA HIDEAKI ,  YAMAKOSHI TAKAMICHI

    IPC: G11B5/008 ,  G11B5/012 ,  G11B5/55 ,  G11B5/596 ,  G11B5/64 ,  G11B5/09 ,  G11B5/73 ,  G11B5/82 ,  G11B5/84 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B21/10 ,  G11B25/04 ,  G11B27/19 ,  G11B27/30 ,  G11B33/14

    Abstract: A magnetic disk apparatus suitable for use as a hard disk apparatus in a computer system. The apparatus includes a disk-like medium having a magnetic film formed on a surface, which information is recorded on or reproduced from; and magnetic heads (20 - 31) for recording on or reproducing from the information the disk-like medium. The disk-like medium has data recording regions (20 - 41D) and control signal recording regions (20 - 40), (20 - 41H). In the data recording regions, data tracks are raised and adjacent data tracks are separated by recessing guard bands (20 - 20). In the control signal recording region, on the other hand, tracking marks (20 - 12), (20 - 13) for tracking control of the magnetic heads, track number marks (20 - 71) for stipulating the tracks , track numbers (20 - 41b1), (20 - 41b2) and clock marks (20 - 11) for equidistantly dividing a circumference are formed in projections and recesses along the paths (21 - 21) of the magnetic heads. In this apparatus, the guard band is recessed with respect to the track. Accordingly, the guard band needs not be expanded so as to reduce cross-talk, and a recording capacity can be increased by reducing the track pitch. Because the tracking mark and the track number mark or the clock mark are formed in projections and recesses along the paths of the magnetic heads, accurate access becomes possible even when the track pitch is reduced.

    2.
    发明专利
    未知

    公开(公告)号：DE69415456D1

    公开(公告)日：1999-02-04

    申请号：DE69415456

    申请日：1994-03-04

    Applicant: SONY CORP

    Inventor： WATANABE KENJIRO ,  TAKEDA TORU ,  SEKO SATORU ,  KAWAZOE KAZUSHIGE ,  MUTO TAKAYASU ,  MORITA OSAMU ,  HAYASHI NOBUHIRO ,  ISHIDA TAKEHISA ,  ISHIOKA HIDEAKI ,  YAMAKOSHI TAKAMICHI

    IPC: G11B5/008 ,  G11B5/012 ,  G11B5/55 ,  G11B5/596 ,  G11B5/64 ,  G11B5/09 ,  G11B5/73 ,  G11B5/82 ,  G11B5/84 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B21/10 ,  G11B25/04 ,  G11B27/19 ,  G11B27/30 ,  G11B33/14

    Abstract: A magnetic disk apparatus suitable for use as a hard disk apparatus in a computer system. The apparatus includes a disk-like medium having a magnetic film formed on a surface, which information is recorded on or reproduced from; and magnetic heads (20 - 31) for recording on or reproducing from the information the disk-like medium. The disk-like medium has data recording regions (20 - 41D) and control signal recording regions (20 - 40), (20 - 41H). In the data recording regions, data tracks are raised and adjacent data tracks are separated by recessing guard bands (20 - 20). In the control signal recording region, on the other hand, tracking marks (20 - 12), (20 - 13) for tracking control of the magnetic heads, track number marks (20 - 71) for stipulating the tracks , track numbers (20 - 41b1), (20 - 41b2) and clock marks (20 - 11) for equidistantly dividing a circumference are formed in projections and recesses along the paths (21 - 21) of the magnetic heads. In this apparatus, the guard band is recessed with respect to the track. Accordingly, the guard band needs not be expanded so as to reduce cross-talk, and a recording capacity can be increased by reducing the track pitch. Because the tracking mark and the track number mark or the clock mark are formed in projections and recesses along the paths of the magnetic heads, accurate access becomes possible even when the track pitch is reduced.

Patent Agency Ranking