公开(公告)号：AU2721095A

公开(公告)日：1996-02-08

申请号：AU2721095

申请日：1995-07-26

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.

公开(公告)号：FR2709012A1

公开(公告)日：1995-02-17

申请号：FR9412118

申请日：1994-10-11

Applicant: SYQUEST TECHNOLOGY

Inventor： PEDERSON RICHARD J

IPC: G11B5/596

Abstract: The invention relates to the tracking servocontrol systems for magnetic data recording disks. The invention provides for an alternating configuration of servocontrol bursts "A/B" for measuring and compensating the offset in the axis of the track which is due to a differential magnetic influence on the servocontrol configuration, as well as a switching network for alternately switching the outputs of the demodulators of the servocontrol system between the inverting and non-inverting input terminals of a differential amplifier, so as to minimise electrical distortion.

公开(公告)号：CA2167596A1

公开(公告)日：1995-02-02

申请号：CA2167596

申请日：1994-07-11

Applicant: SYQUEST TECHNOLOGY

Inventor： IFTIKAR SYED H ,  THOMPSON HERBERT E ,  GUERINI ALBERT J

IPC: G11B23/00 ,  G11B17/04 ,  G11B19/20 ,  G11B23/03 ,  G11B25/04 ,  G11B5/012 ,  G11B17/028

Abstract: A removable cartridge (200) having a housing (202, 204) and a recess formed therein in which is located a tang (208) of a cartridge mounting mechanism. The cartridge mounting mechanism provides for positioning of a disk assembly (220, 226) located within the removable cartridge (200) over a spindle motor (54) for mounting thereto. By recessing the tang (208) of the mounting mechanism, the overall height of the cartridge (200) is reduced. The removable cartridge (200) also includes a specially configured slot (256) for enhanced positioning of the removable cartridge relative to a disk drive.

公开(公告)号：CA2167595A1

公开(公告)日：1995-02-02

申请号：CA2167595

申请日：1994-07-11

Applicant: SYQUEST TECHNOLOGY

Inventor： IFTIKAR SYED H ,  THOMPSON HERBERT E ,  KAY TEONG-HOE ,  GUERINI ALBERT J

IPC: G11B17/03 ,  G11B17/04 ,  G11B23/03 ,  G11B25/04 ,  G11B33/12 ,  G11B17/022

Abstract: A disk drive (30) for receiving a removable cartridge (200) having a recess (266, 270) formed in an exterior surface thereof, and an engaging surface of the disk assembly mounting mechanism (56) is located in that recession. The drive possesses a handle (58) having a lever (70) which extends into the recess to contact the engaging surface of the disk assembly mounting mechanism, whereby further movement of the handle causes the mounting mechanism to move in such a manner that a disk assembly within the removable cartridge is positioned over a spindle motor (54) of the drive for mounting thereto. Other features such as position sensors and enhanced cartridge positioning mechanisms are also provided.

公开(公告)号：CA1321423C

公开(公告)日：1993-08-17

申请号：CA590302

申请日：1989-02-07

Applicant: SYQUEST TECHNOLOGY

Inventor： COUSE ROBERT F ,  MERCER PATRICK G

IPC: G11B19/04 ,  G11B21/12 ,  G11B21/22 ,  G11B5/54 ,  G11B21/02

Abstract: HEAD LOADING VELOCITY CONTROL Inventors: Robert F. Couse Patrick G. Mercer 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. S2:16 SYQU6406/SRM

公开(公告)号：AU3441089A

公开(公告)日：1989-09-22

申请号：AU3441089

申请日：1989-01-25

Applicant: SYQUEST TECHNOLOGY

Inventor： THOMPSON HERBERT E ,  ROLPH DONALD L ,  MERCURIO DOMINIC

IPC: G11B23/03 ,  G11B23/02

Abstract: A removable cartridge 20 for a disc drive includes a door 34 which is movable from a locked closed position to an open position by a shutter lever of the disc drive.

公开(公告)号：GB2335786A

公开(公告)日：1999-09-29

申请号：GB9911576

申请日：1996-03-07

Applicant: SYQUEST TECHNOLOGY

Inventor： SUN KAI CHIH-KAI ,  HERBST JAMES A ,  KIADEH MANSUR B ,  CHANG CHIH-HSIUNG

IPC: G11B5/012 ,  G11B19/12 ,  G11B23/03

Abstract: A higher-capacity disk drive system (101, figure 7A) and a higher capacity removable disk cartridge (106) adapted for downward compatibility with older, lower-capacity disk drive systems, wherein a unique control format (208, figure 9C) is stored on higher-capacity removable disk cartridges (106) to distinguish them from older, lower-capacity removable disk cartridges (104) and thereby to facilitate cartridge capacity recognition by the higher-capacity disk drive system (101). Upon recognizing the capacity of an inserted removable disk cartridge, the higher-capacity disk drive system (101) can read and write data to the removable disk cartridge such that data which it stores on a lower-capacity removable disk cartridge (104) may be read by lower-capacity disk drive systems. A predefined distance between a DC gap and a servo pattern is used to determine disk storage capacity.

公开(公告)号：GB9911576D0

公开(公告)日：1999-07-21

申请号：GB9911576

申请日：1996-03-07

Applicant: SYQUEST TECHNOLOGY

IPC: G11B5/012 ,  G11B19/12 ,  G11B23/03

公开(公告)号：AU4205196A

公开(公告)日：1996-07-25

申请号：AU4205196

申请日：1996-01-17

Applicant: SYQUEST TECHNOLOGY

Inventor： DROUIN DAVID M

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.

公开(公告)号：GB9604118D0

公开(公告)日：1996-05-01

申请号：GB9604118

申请日：1996-02-27

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.