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：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.

公开(公告)号：GB2335786B

公开(公告)日：1999-11-10

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

公开(公告)号：IT1277876B1

公开(公告)日：1997-11-12

申请号：ITRM950515

申请日：1995-07-27

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：ITRM950515A1

公开(公告)日：1997-01-27

申请号：ITRM950515

申请日：1995-07-27

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：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：GB2313701B

公开(公告)日：1999-08-25

申请号：GB9719192

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 ,  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.

公开(公告)号：GB2313701A

公开(公告)日：1997-12-03

申请号：GB9719192

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 ,  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 (101) 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) 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.

公开(公告)号：DE19527520A1

公开(公告)日：1996-02-01

申请号：DE19527520

申请日：1995-07-27

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: A single mechanism is used to launch and retract the read-write heads from the medium of a disk drive. The mechanism includes a retraction lever 91, a retraction lever lock 118, a mechanical biasing member 76, a disk 37, and a voice coil motor 16. During launch of the read-write heads, the mechanical basing member 76 balances the emf generated by the voice coil motor 16. After launch, the voice coil motor is used to rotate a retraction lever 91 and increase the potential energy in the mechanical biasing member 76. The retraction lever lock 118 then is used to store this built-up potential energy. If the drive later experiences a loss of power, the mechanism automatically retracts the read-write heads from the media. During retraction of the read-write heads, the stored mechanical energy is applied to the retraction lever 91, which then automatically retracts the read-write heads. In the preferred embodiment, the disk is contained within a cartridge.