公开(公告)号：WO1997050079A1

公开(公告)日：1997-12-31

申请号：PCT/JP1997002222

申请日：1997-06-26

Applicant: SONY CORPORATION ,  TAKINO, Hiroshi

Inventor： SONY CORPORATION

IPC: G11B05/012

CPC classification number: G11B17/043 ,  G11B5/012 ,  G11B5/82 ,  G11B17/0436 ,  G11B19/12 ,  G11B23/0302 ,  G11B23/0307 ,  G11B23/0308

Abstract: A magnetic disk apparatus using a magnetic disk in which recording and/or reproduction of information is carried out by a magnetic head which receives a floating force by an air current occurring when the magnetic disk is rotated. In this apparatus, a first disk cartridge holding a first magnetic disk which is provided with a planar recording track on a disk substrate molded out of a synthetic resin, and a magnetic layer covering the recording track, and a second disk cartridge holding a second magnetic disk which is provided with recessed and projecting information bit arrays on a disk substrate molded out of a synthetic resin, and a magnetic layer on bottom and top surfaces of these bit arrays, and in which the magnetic layer to the bottom and top surfaces of the bit arrays are magnetized in different directions to store information such as computer-controlling program are selectively mounted. This enables a new program to be installed in a computer only by replacing the disk cartridge.

Abstract translation: 一种使用磁盘的磁盘装置，其中信息的记录和/或再现由磁头执行，该磁头通过当磁盘旋转时产生的气流接收浮力。 在该装置中，保持在由合成树脂模制的盘基板上设置有平面记录轨道的第一磁盘和覆盖记录轨道的磁性层的第一磁盘盒和保持第二磁盘的第二磁盘盒 在由合成树脂模制的盘基板上设置有凹凸投影信息位列的磁盘，以及位于这些位列的底表面和顶表面上的磁性层，其中磁层至 位阵列在不同方向被磁化以存储诸如计算机控制程序的信息被选择性地安装。 这使得只有更换磁盘盒才能将新程序安装在计算机中。

公开(公告)号：WO1994015331A1

公开(公告)日：1994-07-07

申请号：PCT/US1993012160

申请日：1993-12-14

Applicant: LOCKHART, Wayne, C. ,  LIN, Ted, Tsung-Ming

IPC: G11B05/012

CPC classification number: G11B33/121 ,  G11B21/083 ,  G11B25/043 ,  G11B33/14

Abstract: A low profile information storage system including a low profile information storage cartridge (11) having a housing consisting of a base (13) and a cover (14) defining a sealed chamber with one or more disks (16), transducers (17) for the writing and reading of information, a portion of a drive motor stator (37), a drive motor rotor for rotating the disk(s), and a transducer actuator for positioning the transducers (17) at selected locations over the disk(s) (16) sealed in the chamber to maintain the disk(s) (16) and transducers (17) in a clean controlled environment, and a cartridge receiving assembly (12), a coil portion (21) of the drive motor stator (37) and mechanical means (71, 72, 73) for accurately positioning and maintaining alignment of an inserted portable low profile information storage cartridge (11).

Abstract translation: 一种低剖面信息存储系统，包括具有由基座（13）和限定具有一个或多个盘（16）的密封室的盖（14）组成的壳体的低剖面信息存储盒（11），用于 信息的写入和读取，驱动电动机定子（37）的一部分，用于旋转盘的驱动电动机转子和用于将换能器（17）定位在盘上的选定位置的换能器致动器， （16）密封在腔室中以将盘（16）和换能器（17）保持在干净的受控环境中;以及盒接收组件（12），驱动电动机定子（37）的线圈部分（21） ）和机械装置（71,72,73），用于准确地定位并保持插入的便携式低剖面信息存储盒（11）的对准。

公开(公告)号：WO1994009487A1

公开(公告)日：1994-04-28

申请号：PCT/US1993009664

申请日：1993-10-08

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  BAKER, David, L. ,  BOECKNER, James, W., Jr. ,  CHESSMAN, Shirley ,  SWENSON, Mark

IPC: G11B05/012

CPC classification number: G11B33/121 ,  G11B25/043

Abstract: A 10 millimeter z-height form factor is disclosed having a base plate (24) with a spin motor boss (26) for holding a spin motor (14) and an actuator bearing assembly boss for coupling an actuator bearing assembly. A circuit board (38) positioned below the base plate has a hole for receiving the spin motor boss (26) and a hole for receiving the actuator bearing assembly boss.

Abstract translation: 公开了一种10毫米z高度形状因数，其具有带有用于保持旋转马达（14）的旋转马达凸台（26）的基板（24）和用于联接致动器轴承组件的致动器轴承组件凸台。 位于基板下方的电路板（38）具有用于接收旋转电机凸台（26）的孔和用于接收致动器轴承组件凸台的孔。

公开(公告)号：WO1991020076A1

公开(公告)日：1991-12-26

申请号：PCT/US1991004276

申请日：1991-06-14

Applicant: STORAGE TECHNOLOGY CORPORATION

Inventor： STORAGE TECHNOLOGY CORPORATION ,  O'BRIEN, John, Timothy ,  RUDESEAL, George, Arthur ,  MILLIGAN, Charles, Allen ,  BUHLMAN, Craig, Alan

IPC: G11B05/012

CPC classification number: G06F11/1076 ,  G06F3/0601 ,  G06F11/1008 ,  G06F12/084 ,  G06F12/0866 ,  G06F2003/0697 ,  G06F2212/401 ,  G11B20/1803 ,  G11B20/1833

Abstract: The use of a dynamically mapped virtual memory system (100) permits the storage of data so that each data record occupies only the physical space required for the data. Furthermore, the data storage subsystem (100) manages the allocation of physical space on the disk drives (122-125) and does not rely on the file extend defined in the count key data format. Data compaction apparatus is provided to remove the gaps contained in the stream of count key data records received from the host processor (11, 12). A data compression algorithm (203-0) is then used to compress the received data into a compressed format for storage on the disk drives (122-125). It is the compacted, compressed data that is finally stored on the disk drives (122-125). Furthermore, any data record received from the host processor (11, 12) absent data in the user data field therein is simply listed in the virtual memory map as a null field occupying no physical space on the disk drives (122-125). The data storage control (101), through its mapping capability, stores the actual data in the minimum physical space required by overcoming the limitations imposed on large form factor disk drives by the use of count key data format data records. However, the data storage subsystem (100) returns this stored data to the host processor (11, 12) in count key data format through a data record reformatting process once the stored compacted compressed data is staged to the cache memory (113) for access by the host processor (11, 12). The data storage subsystem (100) is operationally independent of the host processor (11, 12), yet performs as if it were a standard operationally dependent large form factor disk subsystem.

公开(公告)号：WO1989001682A1

公开(公告)日：1989-02-23

申请号：PCT/US1988002597

申请日：1988-08-05

Applicant: TRAGER, Dennis

IPC: G11B05/012

CPC classification number: G11B33/124 ,  G11B33/02 ,  G11B33/142

Abstract: A hard disk drive includes a housing (11) having a wall (31) contourned to fit vertically flush against the rear wall of a cabinet (13) of a display screen for a personal computer. A hard disk drive unit (32) is mounted within the housing such that the storage disk within the drive unit is oriented generally parallel to the contoured wall. Vents (51, 52) are formed through the housing to permit air to circulate past the drive unit.

Abstract translation: 硬盘驱动器包括具有壁（31）的壳体（11），所述壁（31）被构造成垂直地与个人计算机的显示屏幕的橱柜（13）的后壁垂直。 硬盘驱动单元（32）安装在壳体内，使得驱动单元内的存储盘大致平行于轮廓的壁定向。 通风口（51,52）通过壳体形成，以允许空气循环通过驱动单元。

公开(公告)号：WO1985004277A1

公开(公告)日：1985-09-26

申请号：PCT/JP1985000123

申请日：1985-03-13

Applicant: OLYMPUS OPTICAL CO., LTD ,  YUNOKI, Yutaka

Inventor： OLYMPUS OPTICAL CO., LTD

IPC: G11B05/012

CPC classification number: H04N1/2129 ,  G11B5/012 ,  G11B5/02 ,  G11B5/024 ,  G11B5/187 ,  G11B5/2655 ,  G11B5/29 ,  G11B5/4826 ,  G11B5/4886 ,  G11B19/02 ,  G11B19/28 ,  G11B20/10 ,  G11B27/029 ,  H04N1/2112 ,  H04N5/92 ,  H04N2101/00 ,  Y10S358/906

Abstract: A magnetic recording/reproducing apparatus in which a PG yoke (4) that serves as a rotational position detector marking on a magnetic disc (1) is detected by a PG coil (5) that serves as pulse detector means thereby to take out pulses responsive to the turn of the disc (1), the erasing operation and recording/reproducing operation are controlled by a control circuit (17) which constitutes erase/record/reproduction control means that work responsive to the pulses, and the data is erased from the disc (1) or is recorded onto or reproduced from the disc (1) by a composite magnetic head (6) controlled by said erase/record/reproduction control means, the composite magnetic head (6) having an erasing gap (E1, E2) and a recording/reproducing gap (R/W-1, R/W-2) that are constructed as a unitary structure being separated apart in the lengthwise direction of the recording track.

公开(公告)号：EP0243075A3

公开(公告)日：1988-12-14

申请号：EP87303274

申请日：1987-04-14

Applicant: FUJITSU LIMITED

Inventor： Satoh, Nakatoshi

IPC: H03M05/14 ,  G11B20/14 ,  G11B05/012

CPC classification number: G11B20/1423 ,  G11B20/1403

Abstract: A frequency multiplying circuit for a disc controller includes a first time counting unit (21) responsive to input pulse signals (S(CLK)) for producing a first detection signal when a HIGH level period of the input pulse signals (S(CLK)) is longer than a predetermined length, a second time counting unit (22) responsive to the input pulse signals (S(CLK)) for producing a second detection signal when a LOW level period of the input pulse signals (S(CLK)) is longer than a predetermined length, and a pulse generation determining unit (3) responsive to the produced first and second detection signals for realizing a SET state by the produced first detection signal and realizing a RESET state by the produced second detection signal to generate gate signals (Q, Q). First and a second pulses are generated in gates (41, 42) responsive to the gate signals (Q, Q ), and a rising or falling edge of the input pulse signals (S(CLK)) to deliver frequency multiplication of the input pulse signals (S(CLK)) is prohibited when the frequency of the input pulse signals is higher than a predetermined frequency to prevent unacceptably short LOW level periods of the frequency multiplied signals.

Abstract translation: 用于磁盘控制器的倍频电路包括响应于输入脉冲信号（S（CLK））在输入脉冲信号（S（CLK））的高电平周期时产生第一检测信号的第一时间计数单元（21） 当输入脉冲信号（S（CLK））的低电平时间段是预定长度时，产生第二检测信号的第二时间计数单元（22），响应于输入脉冲信号（S（CLK） 以及脉冲产生确定单元（3），响应于产生的第一和第二检测信号，用于通过产生的第一检测信号实现SET状态，并通过产生的第二检测信号实现RESET状态，以产生选通信号 （Q，Q）。 响应于栅极信号（Q，Q）和输入脉冲信号（S（CLK））的上升沿或下降沿，在门（41,42）中产生第一和第二脉冲以传送输入脉冲的倍频 当输入脉冲信号的频率高于预定频率时，信号（S（CLK））被禁止，以防止倍频信号的不可接受的短LOW电平周期。

公开(公告)号：EP0210630A3

公开(公告)日：1987-11-11

申请号：EP86110389

申请日：1986-07-28

Applicant: Xebec

Inventor： Redmond, Donald R. ,  Dieckman, John H.

IPC: G11B05/012

CPC classification number: G11B27/13 ,  G11B20/12 ,  G11B27/3027 ,  G11B2220/20 ,  G11B2220/2508

Abstract: A method for re-formatting a magnetic data storage disk utilizing a Hall-effect sensor associated with the spindle motor to generate signals at least twice per revolution. In the re-formatting operation, sector location information is read from a track on the disk, and re-formatting is initiated following a Hall-effect signal only if the sector is identified as the first sector on the track. Accordingly, synchronization of a re-formatting operation is obtained using information provided from a first formatting operation.

Abstract translation: 一种利用与主轴电动机相关联的霍尔效应传感器重新格式化磁数据存储盘的方法，每转产生至少两次信号。 在重新格式化操作中，扇区位置信息从磁盘上的轨道中读取，并且仅当扇区被识别为轨道上的第一扇区时，才在霍尔效应信号之后启动重新格式化。 因此，使用从第一格式化操作提供的信息获得重新格式化操作的同步。

公开(公告)号：EP0228646A3

公开(公告)日：1987-10-14

申请号：EP86117490

申请日：1986-12-16

Applicant: HITACHI, LTD.

Inventor： Sasaki, Hiroshi ,  Chiba, Tomio ,  Kido, Mitsuyasu ,  Sato, Yoshio ,  Watanabe, Atsumi

IPC: G11B20/10 ,  G11B05/012 ,  G11B07/013 ,  G11B19/28

CPC classification number: G11B7/24085 ,  G11B5/012 ,  G11B20/10

Abstract: A disc (14) is provided with equal-interval pits (141) along tracks, at which digital signals are recorded bit by bit. Such a disc (14) is rotated with constant angular velocity. A signal processing apparatus according to the present invention detects the linear velocity of the track which is at present followed by a pickup. A filter (302) filtering a source signal to be recorded and an A/D converter (304) carrying out analog-to-digital conversion of the filtered signal, in the signal processing for recording, are controlled and timed in accordance with the detected linear velocity. Further, an D/A converter (604) carrying out digital-to-analog conversion of a signal read out from the disc and a filter (606) filtering the converted signal, in the signal processing for reproducing, are also timed and controlled in response to the detected linear velocity. Thereby, a disc memory device having a large storage capacity and suited for the random access memory can be realized.

公开(公告)号：EP0182458A3

公开(公告)日：1987-09-30

申请号：EP85305920

申请日：1985-08-20

Applicant: PIONEER ELECTRONIC CORPORATION

Inventor： Okano, Takashi c/o Pioneer Electronic Corporation

IPC: G11B20/02 ,  G11B20/18 ,  G11B05/012 ,  H04N05/95 ,  G11B19/24

CPC classification number: G11B20/025 ,  G11B27/10 ,  H04N5/953 ,  Y10S358/907

Abstract: 57 A method for time axis control in which both coarse and fine time axis adjustment are performed in accordance with the relative speeds of a recording disk (1) and a playback unit during recording or reproduction in which repetitive track jumping operations are effected over successive tracks by moving the pickup unit. During the track jumping operations, a time constant circuit (R1, C2) within a circuit (9) which performs the fine time axis adjustment is reset during each track jumping operation. This enables a colour image to be displayed during a scanning operation which is natural in appearance by preventing a build-up of time axis errors caused by the track jumping operation.