公开(公告)号：US4771346A

公开(公告)日：1988-09-13

申请号：US60063

申请日：1987-06-09

申请人： Makoto Shoji ,  Hiroshi Tsuyuguchi ,  Yoshiaki Sakai

发明人： Makoto Shoji ,  Hiroshi Tsuyuguchi ,  Yoshiaki Sakai

IPC分类号： G11B21/08 ,  G11B5/012 ,  G11B5/09 ,  G11B5/86 ,  G11B21/12 ,  G11B5/03

CPC分类号： G11B5/012 ,  G11B5/86

摘要： A floppy disk drive (FDD) capable of data transfer with a track density of, typically, 96 tracks per inch (TPI) is adapted for rewriting on a floppy disk on which data has been written on concentric data tracks by a 48-TPI FDD. The data tracks, each with a width W1, are arranged with a pitch P1 on the disk. The 96-TPI FDD has a magnetic head assembly comprising a read/write head capable of providing a data track width W2 of 0.4 W1 to 0.6 W1, and a pair of tunnel erase heads each capable of providing an erase width of (W1-W2)/1 to (P1/2-W2). The opposite edge portions of each prewritten data track on the disk are erased by the erase heads of the head assembly, with the latter successively positioned intermediate the data tracks. Either before or, preferably, after the erasure of the edge portions of the prewritten data tracks, the head assembly is positioned on the successive data tracks for rewriting thereon by the read/write head, with the erase heads maintained in operation for the complete erasure of the old data during the writing of new data.

摘要翻译： 能够进行数据传输的软盘驱动器（FDD）具有通常为每英寸96个磁道（TPI）的磁道密度，适用于通过48-TPI FDD将数据写入同心数据磁道的软盘上进行重写 。 每个具有宽度W1的数据轨道在盘上以间距P1排列。 96-TPI FDD具有磁头组件，其包括能够提供0.4W1至0.6W1的数据磁道宽度W2的读/写头，以及一对隧道擦除磁头，每个能够提供（W1-W2 ）/ 1〜（P1 / 2-W2）。 磁盘上每个预先写入的数据轨道的相对边缘部分被磁头组件的擦除头擦除，后者相继位于数据磁道之间。 在预写的数据轨道的边缘部分被擦除之前或之前，优选地，头部组件位于连续的数据轨道上，以便由读/写头重写，擦除头保持在操作中以进行完全擦除 在编写新数据时的旧数据。

公开(公告)号：US4700243A

公开(公告)日：1987-10-13

申请号：US634320

申请日：1984-07-25

申请人： Hiroshi Tsuyuguchi ,  Tsutomu Morita ,  Makoto Shoji

发明人： Hiroshi Tsuyuguchi ,  Tsutomu Morita ,  Makoto Shoji

IPC分类号： G11B5/016 ,  G11B19/00 ,  G11B19/02 ,  G11B19/20 ,  G11B33/10 ,  G11B21/02

CPC分类号： G11B33/10 ,  G11B19/00 ,  G11B19/02 ,  G11B19/20 ,  G11B5/016

摘要： A floppy disk drive which, together with one or more like devices, is daisy chained to host equipment comprising a central processor unit and an associated controller. Each disk drive comprises a disk motor for rotating a record disk under the control of a disk motor drive circuit, a head motor for incrementally moving a transducer head radially of the record disk under the control of a head motor drive circuit, and a read/write circuit for processing data read from, or to be written on, the record disk via the transducer head. The host equipment produces, among other control signals, a MOTOR ON signal for the on/off control of the disk motor via the disk motor drive circuit. In order to avoid waste of electric power, not only the disk motor drive circuit but also at least one, preferably both, of the head motor drive circuit and the read/write circuit is connected to a common power line via a power control switch which is closed only when the MOTOR ON signal is in a prescribed state to cause rotation of the disk motor.

摘要翻译： 一个软盘驱动器与一个或多个相似的设备一起被菊花链链接到包括中央处理器单元和相关控制器的主机设备。 每个磁盘驱动器包括用于在盘式电动机驱动电路的控制下旋转记录盘的磁盘电动机，用于在磁头电动机驱动电路的控制下使记录盘的径向逐渐移动的磁头电动机，以及读/ 写入电路，用于处理通过换能器头从记录盘读取或写入的数据。 除了其他控制信号之外，主机还经由盘式电动机驱动电路产生用于盘式电动机的开/关控制的MOTOR ON信号。 为了避免电力浪费，不仅磁头马达驱动电路，而且磁头马达驱动电路和读/写电路中的至少一个，优选两个都经由功率控制开关连接到公共电源线，功率控制开关 只有当MOTOR ON信号处于规定状态才能使盘驱动器旋转。

公开(公告)号：US4688131A

公开(公告)日：1987-08-18

申请号：US667554

申请日：1984-11-02

申请人： Yasushi Noda ,  Toshihiro Kitahara ,  Hiroshi Tsuyuguchi

发明人： Yasushi Noda ,  Toshihiro Kitahara ,  Hiroshi Tsuyuguchi

IPC分类号： G11B33/02 ,  G11B17/02 ,  G11B25/04 ,  G11B33/12 ,  G11B31/00 ,  H05K7/16

CPC分类号： G11B25/043 ,  G11B17/02 ,  Y10S439/907

摘要： An information processing apparatus such as a computer of the class for office and home use is disclosed which employs a magnetic disk cartridge as an information storage medium, together with a disk drive assembly for information transfer with the disk cartridge. The apparatus has a housing having defined therein a disk drive compartment, in which there is accommodated the disk drive assembly inclusive of its own enclosure having an entrance slot for the insertion of the disk cartridge. Upon full insertion of the disk drive assembly into the disk drive compartment, the disk drive assembly is locked into position by a locking lever which, under the influence of a cantilever spring, engages a first opening in the disk drive assembly. The disk drive assembly may later be disengaged from the disk drive compartment by inserting a tripping tool through the entrance slot and a second opening in the disk drive assembly and exerting a force against the locking levers opposite to the force of the cantilever spring to disengage the locking lever from the disk drive assembly, thus permitting ready withdrawal of the disk drive assembly from the disk drive compartment of the information processing apparatus as for maintenance purposes.

摘要翻译： 公开了一种诸如用于办公室和家庭使用的计算机的信息处理设备，其与磁盘盒的信息传送盘驱动器组件一起使用磁盘盒作为信息存储介质。 该装置具有在其中限定有盘驱动室的壳体，其中容纳有包括其本身的外壳的盘驱动组件，该盘驱动组件具有用于插入盘盒的入口槽。 当磁盘驱动器组件完全插入到磁盘驱动器隔间中时，磁盘驱动器组件通过锁定杆锁定在适当的位置，锁定杆在悬臂弹簧的影响下与磁盘驱动器组件中的第一开口接合。 磁盘驱动器组件可以随后通过插入跳闸工具穿过入口狭槽和盘驱动器组件中的第二开口而与盘驱动器室脱离，并且相对于与悬臂弹簧的力相反的锁定杆施加力以使悬臂弹簧脱离 锁定杆从盘驱动器组件，因此为了维护的目的，可以从信息处理设备的盘驱动器舱就绪地从磁盘驱动器组件中取出。

公开(公告)号：US4688112A

公开(公告)日：1987-08-18

申请号：US705561

申请日：1985-02-26

申请人： Makoto Shoji ,  Hiroshi Tsuyuguchi ,  Shozo Toma ,  Kazuhiro Hiraki ,  Tsutomu Morita

发明人： Makoto Shoji ,  Hiroshi Tsuyuguchi ,  Shozo Toma ,  Kazuhiro Hiraki ,  Tsutomu Morita

IPC分类号： G11B19/00 ,  G11B19/02 ,  G11B19/06 ,  G11B19/20 ,  G11B15/04 ,  G11B15/12

CPC分类号： G11B19/20 ,  G11B19/02 ,  G11B19/06

摘要： A flexible magnetic disk drive is disclosed which has a disk drive motor for imparting rotation to the magnetic disk under the control of a "motor on" signal, and a stepping motor capable of stepwise rotation in response to stepping pulses for transporting a transducer head or heads radially of the magnetic disk for track to track accessing. Connected to the transducer heads for processing data transferred between them and the magnetic disk, a read/write circuit is connected to a supply terminal via a switching transistor. This switching transistor has connected to its base a switch control circuit for holding the switching transistor nonconductive when the disk drive motor is out of rotation and when the stepping motor is in rotation, and for holding the transistor conductive at least during the progress of data transfer between the transducer heads and the magnetic disk. Preferably, the switch control circuit is further adapted to hold the power control switch open from the moment the disk drive motor is set into rotation to the moment the speed of rotation of the disk drive motor builds up to a prescribed percentage of a normal speed at which data transfer is effected between the transducer heads and the record medium.

摘要翻译： 公开了一种柔性磁盘驱动器，其具有用于在“电动机接通”信号的控制下向磁盘施加旋转的盘驱动电动机，以及能够响应于用于传送换能器头的步进脉冲而逐步旋转的步进电机， 在磁盘的径向磁头上磁道跟踪进入。 连接到换能器头用于处理在它们与磁盘之间传送的数据，读/写电路经由开关晶体管连接到电源端子。 该开关晶体管连接到其基极，当盘驱动电动机不转动时以及当步进电动机转动时，开关控制电路用于保持开关晶体管不导通，并且至少在数据传输过程中保持晶体管导通 在换能器头和磁盘之间。 优选地，开关控制电路还适于将电源控制开关从磁盘驱动电动机设置旋转的时刻开始到盘驱动电动机的旋转速度达到正常速度的规定百分比的时刻 在传感器头和记录介质之间进行数据传送。

公开(公告)号：US20060067188A1

公开(公告)日：2006-03-30

申请号：US11231200

申请日：2005-09-20

申请人： Shinji Umehara ,  Ryotaro Hongo ,  Takayuki Honda ,  Teruyoshi Nakahashi ,  Hiroshi Tsuyuguchi

发明人： Shinji Umehara ,  Ryotaro Hongo ,  Takayuki Honda ,  Teruyoshi Nakahashi ,  Hiroshi Tsuyuguchi

IPC分类号： G11B19/02 ,  G11B20/00

CPC分类号： G11B19/06 ,  G11B19/10

摘要： A DVD recorder system having a sleep state. When a predetermined period of a non-operation state has elapsed, a key controller switches the state of a power source circuit to interrupt voltage supply, thereby causing the system to shift to the sleep state. In this state, when a signal is input from the video input terminal, the key controller controls the power source circuit to turn ON, thereby causing the system to shift to the normal state. After recovery to the normal state, a DVD processor provides instructions to a DVD drive in accordance with recording conditions which are prestored in an EEPROM, and supplies an input video signal to the DVD drive so as to start recording. Also, when a medium is inserted in the DVD drive, the key controller detects an insertion signal to control the power source circuit to turn ON, thereby causing the system to return to the normal state.

公开(公告)号：US5550447A

公开(公告)日：1996-08-27

申请号：US349500

申请日：1994-12-02

申请人： Naoki Sugeta ,  Hiroshi Tsuyuguchi

发明人： Naoki Sugeta ,  Hiroshi Tsuyuguchi

IPC分类号： G11B21/08 ,  H02P8/10 ,  H02P8/18 ,  H02P8/28 ,  H02P7/00

CPC分类号： H02P8/10 ,  H02P8/18

摘要： A pulse generating unit responds to a series of instruction pulses to generate a series of driving pulses which includes alternately occurring first driving pulses and second driving pulses. The pulse generating unit generates the first driving pulses directly in response to the series of instruction pulses. The pulse generating unit measures a predetermined delay time using a series of reference clock pulses since the unit received the first pulse of the series of instruction pulses. The pulse generating unit generates the second driving pulses after the thus measured predetermined delay time has elapsed. A motor requires an initial exciting period between a first one of the first driving pulses and a first one of the second driving pulses of the series of driving pulses, and requires a steady-state exciting period between each two adjacent pulses of the series of driving pulses. The predetermined delay time is longer than the initial exciting period. A time span between each two adjacent pulses of the series of instruction pulses is longer than a predetermined minimum instruction pulse period. A starting delay time is shorter than a time period obtained as a result of subtracting the steady-state exiting period and the predetermined delay time from the predetermined minimum instruction pulse period. The starting delay time is a time since a reference-clock generating unit started, which time is required for the magnitude of the series of reference clock pulses to reach an effective one.

摘要翻译： 脉冲发生单元响应于一系列指令脉冲以产生包括交替出现的第一驱动脉冲和第二驱动脉冲的一系列驱动脉冲。 脉冲发生单元响应于一系列指令脉冲直接产生第一驱动脉冲。 脉冲发生单元使用一系列参考时钟脉冲测量预定的延迟时间，因为该单元接收到该系列指令脉冲的第一脉冲。 脉冲发生单元在经过这样测量的预定延迟时间之后产生第二驱动脉冲。 电动机需要第一驱动脉冲中的第一驱动脉冲之间的初始激励周期和一系列驱动脉冲的第一驱动脉冲中的第一驱动脉冲之间的初始激励周期，并且需要在一系列驱动的每两个相邻脉冲之间的稳态激励周期 脉冲。 预定的延迟时间比初始激励时间长。 一系列指令脉冲的每两个相邻脉冲之间的时间间隔长于预定的最小指令脉冲周期。 开始延迟时间短于作为从预定最小指令脉冲周期减去稳态退出周期和预定延迟时间的结果而获得的时间段。 启动延迟时间是从参考时钟产生单元开始起的一段时间，该时间是一系列参考时钟脉冲的幅度达到有效时间所需的时间。

公开(公告)号：US5425014A

公开(公告)日：1995-06-13

申请号：US228957

申请日：1994-04-18

申请人： Hiroshi Tsuyuguchi ,  Sho Sugiyama ,  Shinichi Fujisawa

发明人： Hiroshi Tsuyuguchi ,  Sho Sugiyama ,  Shinichi Fujisawa

IPC分类号： G11B7/005 ,  G11B19/24 ,  G11B19/28 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B7/00

CPC分类号： G11B20/10 ,  G11B19/24 ,  G11B19/28 ,  G11B20/1403 ,  G11B7/005 ,  G11B20/1258 ,  G11B2020/10981

摘要： An apparatus for reading at a constant angular velocity a CD-ROM or like optical disk that is designed to be driven at a constant linear velocity, thereby combining the higher storage capacity of CLV with the shorter access time of CAV. The CLV disk has clock data prerecorded all along its multiturn spiral track together with primary information to be retrieved and utilized by the user. As an optoelectric transducer traces the track, a first clock derives from the clock data a first clock signal which varies in frequency in step with the varying rate of the clock data being read on the CLV disk being driven at CAV. The recovered primary information is written on a memory being docked by the first clock signal and read out therefrom while the memory is being clocked by a second clock signal having a constant frequency, so that the information has a constant transfer rate on being read out from the memory. The information may be demodulated before or after being made constant in transfer rate.

摘要翻译： 用于以恒定角速度读取设计成以恒定线速度驱动的CD-ROM或类似光盘的装置，从而将CLV的较高存储容量与较短的CAV访问时间相结合。 CLV磁盘具有一直沿其多圈螺旋轨迹预录的时钟数据，以及要由用户检索和使用的主要信息。 当光电传感器跟踪轨道时，第一时钟从时钟数据中得出第一时钟信号，频率随着在CAV被驱动的CLV盘上读取的时钟数据的变化速率而频率变化。 恢复的主要信息被写入被第一时钟信号对接的存储器上，并且在存储器被具有恒定频率的第二时钟信号定时存储器的同时被读出，使得信息具有从...读出的恒定传送速率 记忆。 信息可以在传送速率恒定之前或之后被解调。

公开(公告)号：US5107479A

公开(公告)日：1992-04-21

申请号：US346416

申请日：1989-05-01

申请人： Hiroshi Tsuyuguchi ,  Tsutomu Morita

发明人： Hiroshi Tsuyuguchi ,  Tsutomu Morita

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B7/09 ,  G11B7/125 ,  G11B19/02 ,  G11B19/28 ,  G11B27/00

CPC分类号： G11B7/126 ,  G11B19/02 ,  G11B19/28 ,  G11B27/005 ,  G11B7/004 ,  G11B7/0941

摘要： An optical recording/reproducing apparatus records an information signal on a rotary optical disk by irradiating an optical beam having an optical power such that an energy sufficient to cause recording of the information signal is incident to a unit area of the optical disk in a unit time while revolting to optical disk at a first predetermined speed, and plays back the information signal from the optical disk by irradiating the optical beam while revolving the optical disk with a second predetermined speed such that the energy incident to a unit area of the optical beam in a unit time at the time of playback does not cause recording on the optical disk.

摘要翻译： 光学记录/再现装置通过照射具有光功率的光束将信息信号记录在旋转光盘上，使得足以使信息信号记录的能量以单位时间入射到光盘的单位面积 同时以第一预定速度旋转到光盘，并且以第二预定速度旋转光盘时照射光束从光盘重放信息信号，使得入射到光束的单位面积的能量 播放时的单位时间不会导致光盘上的记录。

公开(公告)号：US5032934A

公开(公告)日：1991-07-16

申请号：US395736

申请日：1989-08-18

申请人： Shinichi Aikawa ,  Yoshiaki Sakai ,  Hiroshi Tsuyuguchi ,  Fumio Nagase

发明人： Shinichi Aikawa ,  Yoshiaki Sakai ,  Hiroshi Tsuyuguchi ,  Fumio Nagase

IPC分类号： G11B5/012 ,  G11B5/09 ,  G11B20/10

CPC分类号： G11B20/10212 ,  G11B20/10009 ,  G11B5/012 ,  G11B5/09

摘要： A magnetic disc apparatus comprises a single write/read magnetic head for carrying out write/read with respect to either one of a low-density magnetic disc and a high-density magnetic disc, and a cosine equalizer supplied with a read signal from the write/read magnetic head. The write/read magnetic head has a core gap length which is between 0.60 and 1.20 times a minimum field conversion length for high-density write by a write/read signal.

摘要翻译： 磁盘装置包括用于执行相对于低密度磁盘和高密度磁盘中的任一个的写入/读取的单个写入/读取磁头和被提供有来自写入的读取信号的余弦均衡器 /读磁头。 写入/读取磁头具有通过写入/读取信号进行高密度写入的最小场转换长度的0.60到1.20倍的磁芯间隙长度。

公开(公告)号：US5010246A

公开(公告)日：1991-04-23

申请号：US464975

申请日：1990-01-16

申请人： Hiroshi Tsuyuguchi ,  Yasushi Noda ,  Tsutomu Morita ,  Kenji Shimozawa

发明人： Hiroshi Tsuyuguchi ,  Yasushi Noda ,  Tsutomu Morita ,  Kenji Shimozawa

IPC分类号： G11B7/10 ,  G11B7/12 ,  G11B33/12 ,  H05K1/00 ,  H05K1/18

CPC分类号： H05K1/189 ,  G11B33/12 ,  G11B7/10 ,  G11B7/12

摘要： An optical head apparatus applicable to an optical disc apparatus comprises, a case body having an open surface and a window through which an opto-electronic component can be positioned and housing optical components inside it, a lid being attachable and detachable with respect to the open surface of the case body, and a flexible printed circuit board having a base portion which is adhered to the lid and on which electronic components are mounted and a protruding portion protruding from the base portion and having an opto-electronic component fixed to the distal end portion of it, the opto-electronic component being electrically connected with an electronic circuit which is formed by the electronic components, the distal end portion of the protruding portion of the flexible printed circuit board being fixed to the case body so that the opto-electronic component is position to the window.

摘要翻译： 适用于光盘装置的光头装置包括：具有开放表面的窗体和可以定位光电元件的窗口，并且在其内容纳光学元件;盖可相对于打开的 壳体的表面和柔性印刷电路板，其具有粘附到盖并且安装有电子部件的基部和从基部突出的突出部分，并且具有固定到远端的光电部件 所述光电元件与由所述电子部件形成的电子电路电连接，所述柔性印刷电路板的突出部的前端部固定于所述壳体，使得所述光电子 组件是窗口的位置。