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    Disk drive system and removable disk cartridge adapted for downward compatibility
    31.
    发明专利
    Disk drive system and removable disk cartridge adapted for downward compatibility 未知

    公开(公告)号：GB9719192D0

    公开(公告)日：1997-11-12

    申请号：GB9719192

    申请日：1996-03-07

    Applicant: SYQUEST TECHNOLOGY

    IPC: G11B5/012 ,  G11B5/02 ,  G11B5/024 ,  G11B5/48 ,  G11B5/55 ,  G11B5/596 ,  G11B19/00 ,  G11B19/02 ,  G11B19/12 ,  G11B23/03

    Abstract: A higher-capacity disk drive system and a higher-capacity removable disk cartridge adapted for downward compatibility with older, lower-capacity disk drive systems, wherein a unique control information format is stored on higher-capacity removable disk cartridges to distinguish them from older, lower-capacity removable disk cartridges and thereby to facilitate cartridge capacity recognition by the higher-capacity disk drive system. Upon recognizing the capacity of an inserted removable disk cartridge, the higher-capacity disk drive system can read and write data to the removable disk cartridge such that data which it stores on a lower-capacity removable disk cartridge may be read by lower-capacity disk drive systems.

    Technique for generating audible signals in a disc drive employing a voice coil actuator
    33.
    发明专利
    Technique for generating audible signals in a disc drive employing a voice coil actuator 未知

    公开(公告)号：GB9600855D0

    公开(公告)日：1996-03-20

    申请号：GB9600855

    申请日：1996-01-16

    Applicant: SYQUEST TECHNOLOGY

    IPC: G11B21/08 ,  G11B5/012 ,  G11B15/467 ,  G11B19/02 ,  G11B27/11 ,  G11B27/34 ,  G11B27/36 ,  G11B33/10

    Abstract: A disk drive employing a voice coil actuator to position a read/write head over a magnetic disk retracts the read/write head from the magnetic disk surface and passes an audio frequency alternating current through the voice coil to produce a corresponding movement in the read/write head support structure which generates an audible tone indicating the disk drive status. The alternating current waveform has a positive phase and a negative phase, with the read/write head moving toward the disk in response to one phase of the current and the read/write head moving away from the disk in response to the other phase. Audible tones of different frequencies are produced by varying the frequency of the alternating current waveform. In this fashion the disk drive generates a predetermined sequence of tones separated by silent pauses which identifies a particular disk drive status condition.

    A method and apparatus for launching and retracting the heads in a disk drive
    34.
    发明专利
    A method and apparatus for launching and retracting the heads in a disk drive 未知

    公开(公告)号：GB2292000A

    公开(公告)日：1996-02-07

    申请号：GB9514828

    申请日：1995-07-19

    Applicant: SYQUEST TECHNOLOGY

    Inventor： SUN KAI CHIH-KAI ,  THORSEN JACK DUANE ,  POLLOCK DUNCAN LEE ,  LOW YEE CHEOK ,  CHOO YIN YEOW ,  LIM KIAN KOK

    IPC: G11B21/22 ,  G11B5/54 ,  G11B21/12

    Abstract: PROBLEM TO BE SOLVED: To minimize clash between a read/write head and a recordign medium, and thereby to improve the reliability of a disk drive by employing one mechanism for launching/retraction of the read/write head. SOLUTION: The mechanism includes a retract lever 81, a retract lever lock 118, a mechanical biasing member (spring 76 or the like), and a voice coil motor 16. After launching, the voice coil motor 16 is used to rotate the retract lever 91 to increase the potential energy of the biasing member. Then the retract lever lock 118 is used to store the built-up potential energy. On the occurrence of a power failure of the disk drive, the mechanism retracts the read/write heads 55, 58 automatically from the medium. The stored mechanical energy during the retract motion of the read/write heads 55, 58 acts on the retract lever 91 to allow the read/write heads 55, 58 automatically to be retracted from the medium.

    REMOVAL CARTRIDGE DISC DRIVE WITH RADIAL ARM VOICE COIL ACTUATOR
    35.
    发明专利
    REMOVAL CARTRIDGE DISC DRIVE WITH RADIAL ARM VOICE COIL ACTUATOR 未知

    公开(公告)号：CA1336016C

    公开(公告)日：1995-06-20

    申请号：CA616797

    申请日：1994-01-12

    Applicant: SYQUEST TECHNOLOGY

    Inventor： THOMPSON HERBERT E ,  ROLPH DONALD L ,  MERCURIO DOMINIC ,  GUERINI ALBERT J

    IPC: G11B5/54 ,  G11B5/82 ,  G11B21/22

    Abstract: A disc drive 20 includes a tray assembly 34 for positively seating and locking a cartridge 21 onto a spindle motor 82. The drive 20 includes heads 108, 110 mounted on a radial arm voice coil actuator assembly 112 and appropriate mechanisms including the arm control assembly 126 and the ratchet 124 and pawl projection 170 to ensure that the heads 108, 110 are properly loaded onto the disc 90 and that the cartridge 21 insertion and ejection process does not cause damage to the heads 108, 110 or the disc 90 contained in the cartridge 21. Further the drive 20 includes controls such as the cartridge load lever 32 and the release button 30 which are not exposed and cannot be accidentally tripped during data transfer operations.

    36.
    发明专利
    未知

    公开(公告)号：AT110488T

    公开(公告)日：1994-09-15

    申请号：AT89902450

    申请日：1989-01-25

    Applicant: SYQUEST TECHNOLOGY

    Inventor： COUSE ROBERT F ,  MERCER PATRICK G

    IPC: G11B19/04 ,  G11B21/12 ,  G11B21/22

    Abstract: A disc drive 22 having a head 28 actuated by an actuator 27 includes a head loading velocity control for successfully and accurately loading the head 28 onto a disc 26 so as not to cause damage to the head 28 or the disc 26.

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