公开(公告)号：WO1990005974A1

公开(公告)日：1990-05-31

申请号：PCT/US1989004387

申请日：1989-10-03

Applicant: SYQUEST TECHNOLOGY

Inventor： SYQUEST TECHNOLOGY ,  IFTIKAR, Syed, H. ,  MANDISH, John, J.

IPC: G11B05/016

CPC classification number: G11B33/121 ,  G11B17/03 ,  G11B17/043 ,  G11B19/2009 ,  G11B21/00 ,  G11B23/0318 ,  G11B23/507 ,  G11B25/043

Abstract: A disc drive (20) including a spindle motor assembly (42) having a magnetic clutch plate (46) and an actuator (47) receives a hermetically sealed cartridge (22) containing a plurality of discs (72, 74) with associated heads (80, 81) mounted in the cartridge (22). Associated with an arm assembly (84) which supports heads (80, 81) is a component (50) for use with the actuator (47). With the cartridge (22) inserted in the drive (20), the actuator (47) operates to cause the heads (80, 81) to traverse relative to the disc (72, 74) as the spindle motor assembly (42) uses a magnetic field to engage a magnetic plate (77) associated with cartridge (22) in order to spin the disc (72, 74). Data transfer connectors (52, 54) are associated with both the drive (20) and the cartridge (22) in order to allow for the transfer of data between the cartridge (22) and the drive (20).

Abstract translation: 包括具有电磁离合器板（46）和致动器（47）的主轴电动机组件（42）的盘驱动器（20）容纳密封的盒（22），该盒包含多个具有相关联的头的盘（72,74） 80，81）安装在盒（22）中。 与支撑头（80,81）的臂组件（84）相关联的是用于与致动器（47）一起使用的部件（50）。 当盒（22）插入驱动器（20）中时，致动器（47）操作以使主轴（80,81）相对于盘（72,74）相对于主轴电机组件（42）使用 磁场以接合与盒（22）相关联的磁板（77），以便旋转盘（72,74）。 数据传输连接器（52,54）与驱动器（20）和盒（22）相关联，以便允许在盒（22）和驱动器（20）之间传送数据。

公开(公告)号：WO1989008312A1

公开(公告)日：1989-09-08

申请号：PCT/US1989000316

申请日：1989-01-25

Applicant: SYQUEST TECHNOLOGY

Inventor： SYQUEST TECHNOLOGY ,  THOMPSON, Herbert, E. ,  ROLPH, Donald, L. ,  MERCURIO, Dominic

IPC: G11B23/02

CPC classification number: G11B23/0308

Abstract: A removable cartridge (20) for a radial arm voice coil actuated 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. The door (34) of the removable cartridge (20) includes a removed portion and internal arcuate recesses for additionally facilitated access by a radial arm voice coil actuator.

公开(公告)号：WO1991001554A1

公开(公告)日：1991-02-07

申请号：PCT/US1990003850

申请日：1990-07-09

Applicant: SYQUEST TECHNOLOGY

Inventor： SYQUEST TECHNOLOGY ,  KING, Francis, K.

IPC: G11B20/12

CPC classification number: G11B20/10 ,  G11B20/1258 ,  G11B2020/10916 ,  G11B2020/1282

Abstract: A zone servo sector format alignment scheme (41) for a disc (22) of a disc drive (20) includes the disc (22) having an outer zone (42), a middle zone (44) and an inner zone (46), each zone having a plurality of tracks (48, 50, 52). The sectors (54, 56, 58) of each zone (42, 44, 46) include a plurality of sectors such as sector (60) which define a servo field (62) and a data field (64). The number of sectors (56) in each of tracks (50) of the middle zone (46) is less than the number of sectors (54) on each track (48) of the outer zone (42). The number of sectors (58) on each track (52) of the inner zone (46) is less than the number of sectors (56) on each track (50) of the middle zone (46). Further, by maintaining the same recording frequency of the servo fields (62) across all the zones (42, 44, 46), the placing of the sectors (56, 58) in the middle and inner zones (44, 46) can be adjusted in order to provide for alignment indicia (66) which include aligned sectors across all the zones. Such alignment indicia (66) are positioned about the disc (22) and facilitate the operation of the servo control circuit (36) for facilitating head seeking.

Abstract translation: 用于盘驱动器（20）的盘（22）的区域伺服扇区格式对准方案（41）包括具有外区（42），中间区（44）和内区（46）的盘（22） ，每个区域具有多个轨道（48,50,52）。 每个区域（42,44,46）的扇区（54,56,58）包括多个扇区，例如限定伺服字段（62）和数据字段（64）的扇区（60）。 中间区域（46）的每个轨道（50）中的区段（56）的数量小于外部区域（42）的每个轨道（48）上的扇区数（54）。 内区（46）的每个轨道（52）上的扇区（58）的数量小于中间区（46）的每个轨道（50）上的扇区数（56）。 此外，通过将伺服磁场（62）的记录频率保持在所有区域（42,44,46）上，将扇区（56,58）放置在中间和内部区域（44,46）中可以是 调整以便提供对齐标记（66），其包括跨所有区域对齐的扇区。 这种对准标记（66）围绕盘（22）定位，并且便于伺服控制电路（36）的操作，以便于头部寻找。

公开(公告)号：WO1991001230A2

公开(公告)日：1991-02-07

申请号：PCT/US1990003848

申请日：1990-07-09

Applicant: SYQUEST TECHNOLOGY

Inventor： SYQUEST TECHNOLOGY ,  GRACE, Alan, G.

IPC: B60L0

CPC classification number: H02P6/14 ,  G11B19/28

Abstract: A spindle motor control circuit (20) for controlling the acceleration and position locking of a spindle motor (22) includes a first mode of operation whereby the spindle motor (22) is commutated through use of an external clock (32, 34). The control circuit (20) then causes the spindle motor (22) to be self-commutation based on the clock developed from transitions detected by a transition detector (71), which transitions are signals provided from the phase windings of the spindle motor (22). A final mode includes the reading of servo information from the servo sectors on the disc (24) in order to control the final acceleration and position of the spindle motor (22).

公开(公告)号：WO1989008916A1

公开(公告)日：1989-09-21

申请号：PCT/US1989000315

申请日：1989-01-25

Applicant: SYQUEST TECHNOLOGY

Inventor： SYQUEST TECHNOLOGY ,  COUSE, Robert, F. ,  MERCER, Patrick, G.

IPC: G11B21/02

CPC classification number: G11B21/12 ,  G11B19/04

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).

公开(公告)号：WO1991005334A1

公开(公告)日：1991-04-18

申请号：PCT/US1990005519

申请日：1990-09-27

Applicant: SYQUEST TECHNOLOGY

Inventor： SYQUEST TECHNOLOGY ,  IFTIKAR, Syed ,  GUERINI, Albert, J.

IPC: G11B05/012

CPC classification number: G11B17/043 ,  G11B5/5521 ,  G11B19/2009 ,  G11B23/0318 ,  G11B25/043 ,  G11B33/14

Abstract: A disc drive (420) includes a spindle motor (432) having a stator assembly (436) which is provided in a radial gap configuration. A removable cartridge (422) includes a rotor assembly (472) mounted on a bearing arrangement (468) which additionally mounts the disc (430) contained in the cartridge (422). When the cartridge (422) is placed in the drive (420), the rotor assembly (472) of the cartridge (422) comes into alignment with the stator assembly (436) of the drive (420) so that the spindle motor (432) can cause the disc (430) contained in the cartridge (422) to rotate at the proper speed.

Abstract translation: 盘驱动器（420）包括具有设置在径向间隙构造中的定子组件（436）的主轴马达（432）。 可拆卸的盒（422）包括安装在轴承装置（468）上的转子组件（472），该装置另外安装容纳在盒（422）中的盘（430）。 当盒（422）被放置在驱动器（420）中时，盒（422）的转子组件（472）与驱动器（420）的定子组件（436）对准，使得主轴电动机（432） ）可以使容纳在盒（422）中的盘（430）以适当的速度旋转。

公开(公告)号：WO1989008917A1

公开(公告)日：1989-09-21

申请号：PCT/US1989000313

申请日：1989-01-25

Applicant: SYQUEST TECHNOLOGY

Inventor： SYQUEST TECHNOLOGY ,  COUSE, Robert, F. ,  MERCER, Patrick, G.

IPC: G11B21/08

CPC classification number: G11B5/5552

Abstract: A disc drive (22) having a head (26) actuated by an actuator (32) for seeking out a destination track (30) includes servo velocity control circuitry (31) and servo position control circuitry (41). The servo velocity control circuitry (31) seeks out the destination track and places the head within the boundaries of that track while the servo position control circuitry (41) using servo information places the head on the centerline of the destination track. The fine servo control circuitry (20) is provided for communicating the information generated by the servo position control circuitry (41) to the servo velocity circuitry (31) when the head (26) is several tracks from the destination track in order to allow the actuator (32) to smoothly and quickly cause the head to seek within the boundaries of the destination track without overshooting that track.

公开(公告)号：WO1989008306A1

公开(公告)日：1989-09-08

申请号：PCT/US1989000312

申请日：1989-01-25

Applicant: SYQUEST TECHNOLOGY

Inventor： SYQUEST TECHNOLOGY ,  THOMPSON, Herbert, E. ,  ROLPH, Donald, L. ,  MERCURIO, Dominic ,  GUERINI, Albert, J.

IPC: G11B05/54

CPC classification number: G11B33/121 ,  G11B5/54 ,  G11B17/0434 ,  G11B19/2009 ,  G11B25/043

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 asssembly (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.