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1.发明授权
公开(公告)号：US4688112A
公开(公告)日：1987-08-18
申请号：US705561
申请日：1985-02-26
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。
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公开(公告)号：US4677510A
公开(公告)日：1987-06-30
申请号：US699085
申请日：1985-02-07
IPC分类号： G11B17/03 , G11B17/04 , G11B17/22 , G11B19/06 , G11B19/10 , G11B19/20 , G11B23/00 , G11B17/00 , G11B5/012
CPC分类号： G11B17/043 , G11B19/06 , G11B19/10 , G11B19/2009 , G11B23/0035
摘要： An apparatus for data transfer with a magnetic disk having a metal made hub attached centrally thereto, with the hub having a first opening defined centrally therein and a second opening defined eccentrically therein. The apparatus includes a turntable mounted on a drive spindle which is engageable in the first opening in the hub of the magnetic disk loaded on the turntable. A retractable drive pin is mounted eccentrically on the turntable so as to be sprung into engagement in the second opening in the disk hub upon register therewith. In order to assure engagement of the drive pin in the second opening in the disk hub immediately upon loading of the magnetic disk on the turntable, a disk drive motor for driving the turntable via the drive spindle is connected to a supply terminal via a power control switch. When the magnetic disk is loaded on the turntable while power is being supplied from the supply terminal, a switch control circuit closes the power control switch, for causing the rotation of the turntable relative to the magnetic disk, for a preassigned length of time sufficient for the drive pin to become engaged in the second opening in the disk hub. The magnetic disk can therefore be set into rotation for immediate commencement of data transfer upon delivery of a "motor on" signal from host equipment to the power control switch.
摘要翻译： 一种用磁盘进行数据传送的装置，该磁盘具有一个金属制轮毂，其中心地安装有金属制轮毂，该轮毂具有中心地限定在其中的第一开口和偏心地限定在其中的第二开口。 该装置包括安装在驱动主轴上的转台，该转盘可接合在装在转盘上的磁盘的轮毂中的第一开口中。 可旋转的驱动销偏心地安装在转盘上，以便与其对准时在盘毂中的第二开口中弹簧接合。 为了在将磁盘装载在转盘上时立即确保驱动销在盘毂中的第二开口中的接合，用于经由驱动主轴驱动转盘的盘驱动马达经由功率控制 开关。 当从供电端子供电时将磁盘装载在转盘上时，开关控制电路关闭电源控制开关，用于使转盘相对于磁盘转动，预先指定的时间长度足以 所述驱动销接合在所述盘毂中的所述第二开口中。 因此，可以将磁盘设置为旋转，以便在从主机设备向功率控制开关传送“电机接通”信号时立即开始数据传输。
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公开(公告)号：US4658307A
公开(公告)日：1987-04-14
申请号：US642050
申请日：1984-08-17
申请人： Hiroshi Tsuyuguchi , Shozo Toma
发明人： Hiroshi Tsuyuguchi , Shozo Toma
摘要： A data transfer apparatus is disclosed as typified by a floppy disk drive which, together with one or more like devices, is daisy chained to a central processor unit via a controller. Each disk drive comprises a disk motor for driving 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. Also included in each disk drive is a sensor control circuit associated with an optical sensor assembly for producing a DISK PRESENCE signal representative of the presence or absence of the record disk in the disk drive. In order to avoid waste of power, at least one, preferably all, of the disk motor drive circuit, head motor drive circuit, and read/write circuit is connected to an external power line via a power control switch which is closed in response to the DISK PRESENCE signal only when the record disk is loaded in the disk drive. Additional embodiments are disclosed wherein the power control switch responds not only to the DISK PRESENCE signal but also to a standard MOTOR ON signal or DRIVE SELECT signals, or to both, which are supplied from the host equipment.
摘要翻译： 公开了一种以软盘驱动器为代表的数据传送装置，其与一个或多个相似的装置一起经由控制器被菊花链链接到中央处理器单元。 每个磁盘驱动器包括用于在盘马达驱动电路的控制下驱动记录盘的磁盘马达，用于在磁头马达驱动电路的控制下在记录盘的径向上递增地移动换能器头的磁头马达，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。 每个磁盘驱动器中还包括与光学传感器组件相关联的传感器控制电路，用于产生表示磁盘驱动器中记录盘的存在或不存在的DISK PRESENCE信号。 为了避免浪费电力，盘式电动机驱动电路，头电动机驱动电路和读/写电路中的至少一个，优选全部是经由功率控制开关连接到外部电源线，电源控制开关响应于 只有在磁盘驱动器中装入记录磁盘时，DISK PRESENCE才会发出信号。 公开了另外的实施例，其中功率控制开关不仅响应于DISK PRESENCE信号，而且还响应于从主机设备提供的标准MOTOR ON信号或DRIVE SELECT信号或两者。
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4.发明授权Data transfer apparatus with a disklike record medium and a method of operation therefore 失效具有盘状记录介质的数据传送装置及其操作方法
公开(公告)号：US4782406A
公开(公告)日：1988-11-01
申请号：US133162
申请日：1987-12-11
CPC分类号： G11B19/20 , G11B19/00 , G11B21/106 , G11B5/5547
摘要： A data transfer apparatus for use with a replaceable disklike record medium such as a flexible magnetic disk having data storage tracks thereon, comprising a disk drive motor for imparting rotation to the record medium, and a head transport motor for transporting a transducer head or heads radially of the record medium so as to enable the transducer head or heads to access the individual data storage tracks on the record medium for data transfer therewith. Also included is a control and drive circuit for controllably energizing the head transport motor. When the disk drive motor is out of rotation, the control and drive circuit holds the supply voltage of the head transport motor zero, or lower than its normal operating voltage for head transportation, for saving power. Then, as the disk drive motor is set into rotation, the control and drive circuit applies the normal operating voltage to the head transport motor preparatory to the commencement of data transfer, thereby automatically recorrecting the head position on the record medium.
摘要翻译： 一种数据传送装置，用于与其上具有数据存储轨道的可替换的盘状记录介质一起使用，包括用于向记录介质传送旋转的盘驱动马达，以及用于传送换能器头部或头部的头部传送马达 以使得换能器头部或头部能够访问记录介质上的各个数据存储轨道，以便与其进行数据传输。 还包括用于可控地激励磁头传送电机的控制和驱动电路。 当磁盘驱动电机不能旋转时，控制和驱动电路将磁头传输电机的电源电压保持为零，或低于其运行的正常工作电压以节省电力。 然后，当磁盘驱动电动机转动时，控制和驱动电路将正常工作电压施加到磁头传输电机，以准备开始数据传输，从而自动重新校正记录介质上的磁头位置。
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5.发明授权Circuit arrangement and method for saving power in magnetic disk apparatus without head displacement 失效无磁头位移的磁盘装置节省电力的电路装置及方法
公开(公告)号：US4783706A
公开(公告)日：1988-11-08
申请号：US32983
申请日：1987-03-27
IPC分类号： G11B21/02 , G11B5/54 , G11B19/00 , G11B19/10 , G11B19/20 , G11B21/08 , G11B21/10 , G11B5/55 , G11B19/02
CPC分类号： G11B19/20 , G11B19/00 , G11B19/10 , G11B21/106 , G11B5/54
摘要： A data transfer apparatus for use with a replaceable disklike record medium such as a flexible magnetic disk having data storage tracks thereon, comprising a disk drive motor for imparting rotation to the record medium, and a head transport motor for transporting a transducer head or heads radially of the record medium so as to enable the transducer head or heads to access the individual data storage tracks on the record medium for data transfer therewith. Also included is a control and drive circuit for controllably energizing the head transport motor. When the record medium is not loaded in the apparatus, the control and drive circuit holds the supply voltage of the head transport motor zero, or lwoer than its normal operating voltage for head transportation, for saving power. Then, as the record medium is loaded into the apparatus, the control and drive circuit applies the normal operating voltage to the head transport motor preparatory to the commencement of data transfer, thereby automatically recorrecting the head position on the record medium.
摘要翻译： 一种数据传送装置，用于与其上具有数据存储轨道的可替换的盘状记录介质一起使用，包括用于向记录介质传送旋转的盘驱动马达，以及用于传送换能器头部或头部的头部传送马达 以使得换能器头部或头部能够访问记录介质上的各个数据存储轨道，以便与其进行数据传输。 还包括用于可控地激励磁头传送电机的控制和驱动电路。 当记录介质没有装入设备时，控制和驱动电路将磁头传送电机的电源电压保持为零，或者比头部运输的正常工作电压低，以节省电力。 然后，由于记录介质被装载到装置中，所以控制和驱动电路将正常工作电压施加到磁头传送电机，以准备开始数据传送，从而自动重新校正记录介质上的磁头位置。
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公开(公告)号：US4651235A
公开(公告)日：1987-03-17
申请号：US700642
申请日：1985-02-12
申请人： Tsutomu Morita , Shozo Toma , Yoshiaki Sakai
发明人： Tsutomu Morita , Shozo Toma , Yoshiaki Sakai
摘要： A magnetic disk drive is disclosed which has a write circuit for alternately exciting the a pair of coils of a read/write head in response to a two level write data signal when a write gate signal is in a prescribed state, thereby causing the coils to create magnetic fluxes in the opposite directions in the core. The write circuit excites a different one of the coils of the read/write head each time the write data signal changes in level from a predetermined one to the other. A final excitation circuit is provided for delaying, for example, the write gate signal for a preassigned length of time in order to cause the write circuit to excite a preselected one of the coils of the read/write head in a prescribed direction upon completion of the writing of the write data signal. Consequently, the residual magnetism of the read/write head is of one and the same orientation upon completion of writing, making possible the accurate detection of the peaks of the reproduced waveform at the time of subsequent reading.
摘要翻译： 公开了一种磁盘驱动器，其具有写电路，用于当写入门信号处于规定状态时响应于两级写入数据信号交替地激励读/写头的一对线圈，从而使线圈 在芯中产生相反方向的磁通量。 写入电路每次写入数据信号从预定的一个电平变化到另一个时，激励读/写头的不同线圈。 提供最终激励电路用于延迟例如预先指定的时间长度的写入门信号，以便使得写入电路在完成后使得写入电路在规定的方向上激励读/写头的预定的一个线圈 写数据信号的写入。 因此，读/写头的剩余磁性在写入完成时具有一个相同的取向，从而可以精确地检测在后续读取时的再现波形的峰值。
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7.发明授权
公开(公告)号：US4626942A
公开(公告)日：1986-12-02
申请号：US705674
申请日：1985-02-26
CPC分类号： G11B19/00 , G11B19/04 , G11B5/5526
摘要： A data transfer apparatus is disclosed as exemplified by a floppy disk drive which has photoelectric sensors such as a TRACK ZERO sensor for sensing whether a transducer head or heads are in the "track zero" position on the floppy disk, and a FILE PROTECT sensor for sensing whether the disk is protected against erasure of any prerecorded data. In order to avoid waste of power, at least the TRACK ZERO sensor, preferably the FILE PROTECT sensor as well, has its light source such as an LED connected to a power supply via a power saving switch herein shown as a switching transistor. Connected to the base of the power saving transistor is a switch control circuit which causes conduction through the transistor, and hence the energization of the sensor light source, only when the operation of the sensor is required, as for a preassigned length of time immediately after the apparatus is electrically turned on.
摘要翻译： 公开了一种数据传送装置，例如具有诸如TRACK ZERO传感器的光电传感器的软盘驱动器，用于检测传感器头部或头部是否处于软盘上的“轨迹零”位置，以及FILE PROTECT传感器， 检测磁盘是否被保护以防止任何预先记录的数据被擦除。 为了避免浪费电力，至少TRACK ZERO传感器（优选FILE PROTECT传感器）也具有其光源，例如通过本文所示为开关晶体管的省电开关连接到电源的LED。 连接到省电晶体管的基极是开关控制电路，其仅在需要传感器的操作时才导致通过晶体管的导通，并且因此传感器光源的通电，就像紧随其后的预先指定的时间长度 该装置电气接通。
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