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1. 发明授权

US5293601A Floppy disk control unit and apparatus having a floppy disk control unit 失效
标题翻译：软盘控制单元和具有软盘控制单元的设备
公开(公告)号：US5293601A
公开(公告)日：1994-03-08
申请号：US633665
申请日：1990-12-26
申请人： Hiroshi Tsuyuguchi , Shinichiro Tanaka , Fumio Nagase , Naoki Sugeta , Miya Enami , Tohru Miura , Katsuya Enami
发明人： Hiroshi Tsuyuguchi , Shinichiro Tanaka , Fumio Nagase , Naoki Sugeta , Miya Enami , Tohru Miura , Katsuya Enami
IPC分类号： G06F3/06 , G11B19/02 , G06F13/00
CPC分类号： G06F3/0601 , G11B19/02 , G06F2003/0692
摘要： A floppy disk drive controller has a control part which performs a plurality of kinds of controls by means of outputting control information appropriate to each kind of control, and a memory part in which information which selects a predetermined kind of control from among the plurality of kinds of controls is pre-stored, the control part outputting the control information corresponding to the predetermined kind of control which is selected based on the information from the memory part.
摘要翻译：软盘驱动器控制器具有通过输出适合于各种控制的控制信息来执行多种控制的控制部分，以及从多种类型中选择预定种类的控制的信息的存储器部分控制部分预先存储，控制部分输出与基于来自存储器部分的信息所选择的预定种类的控制相对应的控制信息。

2. 发明授权

US5260634A Constant current driving system for a stepper motor in rotating disk 失效
标题翻译：旋转盘中步进电机的恒流驱动系统
公开(公告)号：US5260634A
公开(公告)日：1993-11-09
申请号：US909617
申请日：1992-07-07
申请人： Hiroshi Tsuyuguchi , Tohro Miura , Naoki Sugeta , Tadashi Terada , Miya Enami
发明人： Hiroshi Tsuyuguchi , Tohro Miura , Naoki Sugeta , Tadashi Terada , Miya Enami
IPC分类号： G11B21/08 , H02P8/12 , H02P8/00
CPC分类号： H02P8/12 , Y10S388/915
摘要： In order to drive the stepper motor of a floppy disk drive with practically constant current in the face of fluctuations in supply voltage fed from a host system, a power control pulse generator circuit is provided which produces a series of power control pulses having a duty ratio dependent upon fluctuating supply voltage. The power control pulses are used for interrupting the excitation of the stepper motor windings during track seek operation. The power control pulses are generated by first repeatedly counting clock pulses from the host system to a predetermined number to provide periodically varying digital data, then translating the digital data into a triangular wave having an amplitude dependent upon the supply voltage, and then comparing the triangular wave with a reference voltage.
摘要翻译：为了在面对从主机系统馈送的电源电压波动的情况下驱动具有几乎恒定电流的软盘驱动器的步进电机，提供了功率控制脉冲发生器电路，其产生一系列具有占空比的功率控制脉冲取决于电源电压波动。功率控制脉冲用于在跟踪寻道操作期间中断步进电机绕组的激励。通过首先将从主机系统的时钟脉冲重复计数到预定数量来产生功率控制脉冲，以提供周期性变化的数字数据，然后将数字数据转换成具有取决于电源电压的幅度的三角波，然后比较三角形波参考电压。

3. 发明授权

US5550447A Pulse generating system responding to instruction pulses for generating driving pulses for diving motor 失效
标题翻译：脉冲发生系统响应用于产生潜水电机的驱动脉冲的指令脉冲
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。

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