公开(公告)号：EP0871174A4

公开(公告)日：2000-03-08

申请号：EP97944169

申请日：1997-10-17

Applicant: SONY CORP

Inventor： MORITA OSAMU

IPC: G11B5/012 ,  G11B5/58 ,  G11B5/60 ,  G11B5/82 ,  G11B21/21 ,  G11B7/12

CPC classification number: G11B5/012 ,  G11B5/58 ,  G11B5/6005 ,  G11B5/6011 ,  G11B5/82 ,  G11B21/21

Abstract: In a discoidal recording medium that is recorded or played back by a recording/playback head mounted on a head slider, the disk surface and/or head slider are also formed with a predetermined pattern of undulation. With the recording/playback head mounted on the head slider placed in contact with the discoidal recording medium, the recording and playback are performed. This makes the recording/playback head and discoidal recording medium unlikely to be worn out and assures good recording and playback characteristics.

Abstract translation: 在由安装在磁头滑块上的记录/重放头记录或重放的盘形记录介质中，盘表面和/或磁头滑块也形成有预定的起伏图形。 通过将记录/重放头安装在与盘状记录介质接触的磁头滑块上，进行记录和重放。 这使得记录/回放头和盘形记录介质不太可能磨损，并确保良好的记录和播放特性。

公开(公告)号：DE69212414T2

公开(公告)日：1997-02-20

申请号：DE69212414

申请日：1992-09-17

Applicant: SONY CORP

Inventor： KAWAZOE KAZUSHIGE ,  MORITA OSAMU

IPC: G11B5/60 ,  G11B5/65 ,  G11B5/73 ,  G11B5/82 ,  G11B21/21 ,  G11B5/55 ,  G11B5/596

Abstract: The present invention is directed to a hard disc drive, in which a floating amount of a floating slider above a discrete type recording medium can be suppressed from being fluctuated to thereby stabilize a reproduced output voltage. The ratio between a maximum wavelength (Lmax) of an information pattern (2) of a discrete type recording medium (1) and the length LSL of a floating slider (3) in the running direction relative to the recording medium (1) is selected so as to satisfy LSL/Lmax > 1.

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.

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.

公开(公告)号：DE69212414D1

公开(公告)日：1996-08-29

申请号：DE69212414

申请日：1992-09-17

Applicant: SONY CORP

Inventor： KAWAZOE KAZUSHIGE ,  MORITA OSAMU

IPC: G11B5/60 ,  G11B5/65 ,  G11B5/73 ,  G11B5/82 ,  G11B21/21 ,  G11B5/55 ,  G11B5/596

Abstract: The present invention is directed to a hard disc drive, in which a floating amount of a floating slider above a discrete type recording medium can be suppressed from being fluctuated to thereby stabilize a reproduced output voltage. The ratio between a maximum wavelength (Lmax) of an information pattern (2) of a discrete type recording medium (1) and the length LSL of a floating slider (3) in the running direction relative to the recording medium (1) is selected so as to satisfy LSL/Lmax > 1.

公开(公告)号：SG76574A1

公开(公告)日：2000-11-21

申请号：SG1998004855

申请日：1998-11-18

Applicant: SONY CORP

Inventor： MORITA OSAMU

IPC: G11B5/012 ,  G11B5/55 ,  G11B5/58 ,  G11B5/596 ,  G11B5/60 ,  G11B5/82 ,  G11B17/32

Abstract: Recording into and reproduction from the magnetic disc 3 is done a magnetic head installed on a head slider of which at least a portion is floated during the recording/reproduction. On the magnetic disc 3, there are formed a data zone 3a consisting of groove-like grooves 3a2 are formed along the recording track and lands 3a1 formed between the grooves 3a2 and on which an information signal is recorded, and a servo zone 3b to record control signals and consisting of grooves 3b2 and lands 3b1 corresponding to control signals including a servo signal and magnetized to have opposite polarities. In the servo zone 3b, the lands 3b1 are larger in area than the grooves 3b2. Such structure provides for a more stabilized fly height for the head slider.