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公开(公告)号：US4920528A
公开(公告)日：1990-04-24
申请号：US16258
申请日：1987-02-19
申请人： Noriaki Sakamoto , Yoshiki Nishioka , Toshihiro Yamanaka , Nobuyuki Horie , Shozou Kobayashi , Toshihisa Deguchi , Shigemi Maeda
发明人： Noriaki Sakamoto , Yoshiki Nishioka , Toshihiro Yamanaka , Nobuyuki Horie , Shozou Kobayashi , Toshihisa Deguchi , Shigemi Maeda
IPC分类号： G11B20/18
CPC分类号： G11B20/1883 , G11B2220/20
摘要： A disk recording method in which recording is performed on a disklike recording medium having a radially coaxial or spiral recording track that is divided into a predetermined plural number of recording sectors each acting as a recording unit. A predetermined number of dedicated sectors are provided at a rear portion of the recording track so that the contents that are recorded in defective sectors of the recording sectors are alternatively assigned to the dedicated sectors.
摘要翻译： 一种盘记录方法，其中在具有径向同轴或螺旋记录轨道的盘状记录介质上执行记录，所述盘状记录介质被分成预定的多个作为记录单元的记录扇区。 预定数量的专用扇区设置在记录轨道的后部，使得记录在记录扇区的缺陷扇区中的内容交替地分配给专用扇区。
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2.发明授权Disk recording checking method for determining if a disk is defective by the number of errors present 失效磁盘记录检查方法，用于根据存在的错误数确定磁盘是否有缺陷
公开(公告)号：US4958337A
公开(公告)日：1990-09-18
申请号：US344530
申请日：1989-04-28
申请人： Toshihiro Yamanaka , Nobuyuki Horie , Shozou Kobayashi , Toshihisa Deguchi , Takeshi Yamaguchi , Shigemi Maeda , Yoshiki Nishioka , Teruki Sugiura
发明人： Toshihiro Yamanaka , Nobuyuki Horie , Shozou Kobayashi , Toshihisa Deguchi , Takeshi Yamaguchi , Shigemi Maeda , Yoshiki Nishioka , Teruki Sugiura
CPC分类号： G11B20/1816 , G11B5/016
摘要： A disk recording checking method in which recording is performed on a disk having radially different recording tracks each divided circumferentially into a plurality of sectors. The method employs a continuous writing device for continuously writing data onto a predetermined number of the sectors, and a continuous checking device for checking the data, while continuously reading the data from the predetermined number of the sectors. The method utilized checks both the number of errors in each code sequence and the total number of errors in each sector to determine if the data in the sector is valid.
摘要翻译： 一种磁盘记录检查方法，其中在具有径向不同的记录磁道的磁盘上执行记录，每个记录磁道分别沿周向分成多个扇区。 该方法采用连续写入装置，用于将数据连续地写入预定数量的扇区;以及连续检查装置，用于在从预定数量的扇区连续读取数据的同时检查数据。 所使用的方法检查每个代码序列中的错误数量和每个扇区中的错误总数，以确定扇区中的数据是否有效。
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3.发明授权Device for controlling an access operation of an information recording and reproducing device 失效用于控制信息记录和再现装置的访问操作的装置
公开(公告)号：US5016126A
公开(公告)日：1991-05-14
申请号：US400790
申请日：1989-08-30
CPC分类号： G11B5/5552 , G11B21/083
摘要： A device for controlling an access operation of an information recording and reproducing device to a target position for rough access in a disk-shaped recording medium prior to a precision access to a final target position, including a head carried by an actuator, a scale, a counter, a comparator, a timer, and a controller. The scale emits pulses while the head is traveling. The counter counts the pulses and then provide the count to the comparator, which calculates a difference between the count and an access distance to be traveled for rough access and then compares the difference with a value which is determined in advance in consideration of a tolerable error. The comparison result is input into the controller. If the comparison result received when the timer finishes measuring the specified time indicates that the difference between the access distance and the count falls within the range of the predetermined value, the controller decides that the actual rough access operation has been normally finished as desired, thereby decreasing a wrong judgement with respect to finish of the rough access irrespective of a value counted by the counter.
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公开(公告)号：US4633337A
公开(公告)日：1986-12-30
申请号：US715292
申请日：1985-03-25
摘要： A floppy disk driving circuit comprises a memory circuit for storing a plurality of items of delay time of a pair of erase heads from the switching-ON and the switching-OFF of a read/write head for all the tracks of a floppy disk, a control circuit responsive to the memory circuit for controlling ON- and OFF-delay timing of the pair of erase heads based on the plurality of items of delay timing. The plurality of items of suitable timing are previously calculated in connection with the respective tracks of the disk and stored within the memory circuit.
摘要翻译： 一个软盘驱动电路包括一个存储电路，用于从软盘的所有磁道的开关导通和读/写头的关断存储一对擦除磁头的多个延迟时间项， 所述控制电路响应于所述存储器电路，用于基于所述多个延迟定时项控制所述一对擦除头的接通和断开延迟定时。 预先根据磁盘的相应轨道计算出多个合适定时的项目，并存储在存储器电路中。
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5.发明授权
公开(公告)号：US5043959A
公开(公告)日：1991-08-27
申请号：US191062
申请日：1988-05-06
IPC分类号： G11B5/02 , G11B11/10 , G11B11/105
CPC分类号： G11B11/1056
摘要： An apparatus for operating a magneto-optic medium includes a magnetic biasing field developing device for developing a magnetic biasing field which is applied to the magneto-optic medium when the magneto-optic medium erases or records data. Additionally, a neutral-position controller is provided for positioning permanent magnets of the magnetic biasing field developing device in a neutral position with respect to the medium when the magnetic biasing field developing device is switched off. Thereby, the neutral-position controller maintains the medium at the neutral position with respect to the permanent magnets until the magnetic biasing developing device is switched on and the permanent magnets are placed in a field applying position.
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公开(公告)号：US5043961A
公开(公告)日：1991-08-27
申请号：US305401
申请日：1989-02-02
申请人： Nobuyuki Horie , Daiji Yamane , Yoshiki Nishioka , Yoshio Yuki
发明人： Nobuyuki Horie , Daiji Yamane , Yoshiki Nishioka , Yoshio Yuki
IPC分类号： G11B21/08 , G05B19/416
CPC分类号： G05B19/416
摘要： A transducer access control system for use in a disk recording/reproducing apparatus for moving a transducer a required distance from its present position over a disk in the radial direction thereof, includes a linear motor for driving the transducer, a circuit for generating a distance signal indicative of the required distance for moving the transducer, and a calculator for calculating a half distance which is a half of the required distance. To move the transducer for the required distance D, the linear motor is operated at the velocity controlled in accordance with a reference velocity signal produced from a reference velocity generator. The reference velocity is determined such that, the reference velocity is maintained at a predetermined value during the movement of the transducer in the first half of the required distance, and gradually decreases during the movement of the transducer in the second half of the required distance.
摘要翻译： 一种用于磁盘记录/再现装置的传感器存取控制系统，用于使传感器在其径向方向上从其当前位置移动所需的距离，包括用于驱动换能器的线性电动机，用于产生距离信号的电路 指示用于移动换能器所需的距离，以及用于计算作为所需距离的一半的半距离的计算器。 为了将传感器移动到所需的距离D，线性电机以根据从参考速度发生器产生的参考速度信号控制的速度运行。 参考速度被确定为使得在所需距离的前半部分期间换能器运动期间参考速度保持在预定值，并且在所需距离的后半部分期间换能器移动期间逐渐减小。
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公开(公告)号：US5028927A
公开(公告)日：1991-07-02
申请号：US399961
申请日：1989-08-29
CPC分类号： G11B20/10203 , G11B20/10009 , H03K5/084
摘要： A signal processing device comprises a comparator, a first reference signal generating unit, a second reference signal generating unit and reference signal controller and switch which is switched when the data head data of the input signal is detected by the controller. In the case when the content of the input signal is a clock producing data, the reference signal generated in a rapid process of the first reference signal generating unit is entered in the comparator, and in the case when the content of the input signal is a reproduction data, the reference signal generated in a slow process of the second reference signal generating unit is entered in the comparator so as to be compared with the input signal.
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公开(公告)号：US5007101A
公开(公告)日：1991-04-09
申请号：US454022
申请日：1982-12-28
摘要： An auto-correlation unit for pattern recognition to obtain auto-correlation functions as for sampled signals is disclosed N pieces of sample values X.sub.n (n=0 to N-1)are extracted from a series of the sample values expressed with an accuracy of optional multi-bits and the auto-correlation coefficients of these N pieces of the sample values obtained. The sum of sample values X.sub.n and X.sub.n-.tau. (.tau.=0 to P) are calculated. The squared value (X.sub.n +X.sub.n-.tau.).sup.2 of the added results is previously memorized in a ROM while being addressed by the resultant sum. The auto-correlation coefficients are available by feeding the output (X.sub.n +X.sub.n-.tau.).sup.2 of the ROM and executing calculation as defined by the following equation: ##EQU1##
摘要翻译： 公开了一种用于模式识别以获得与采样信号相关的自相关函数的自相关单元，从采用可选择的精度表示的一系列采样值中提取出N个采样值Xn（n = 0至N-1） 这些N个样本值获得的多位和自相关系数。 计算采样值Xn和Xn-tau（τ= 0至P）的总和。 相加结果的平方值（Xn + Xn-τ）2预先存储在ROM中，同时通过所得到的和来寻址。 通过馈送ROM的输出（Xn + Xn-τ）2并执行由以下等式定义的计算，可以获得自相关系数：
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公开(公告)号：US4775951A
公开(公告)日：1988-10-04
申请号：US935095
申请日：1986-11-24
摘要： A correlation function computing device capable of computing a selfcorrelation function or the like is constructed to comprise a window function memorizing circuit, an A/D converting circuit for converting time series of a voice signal into digital values, a multiplier for calculating products of the window functions and the digitalized time series of the voice signal and also products required for the computation of the correlation function, a memory circuit for storing the products of the window functions and the digitalized time series of the voice signal delivered from the multiplier, a selector circuit for transferring data supplied to the multiplier, an adder for obtaining a product-sum in a divided manner, a memory circuit of a first-in and first-out type for storing the product-sum dividedly obtained in the adder, and a control circuit for controlling all of the aforementioned circuits.
摘要翻译： 能够计算自相关函数等的相关函数计算装置被构造成包括窗口函数存储电路，用于将语音信号的时间序列转换为数字值的A / D转换电路，用于计算窗口的乘积的乘法器 功能和语音信号的数字化时间序列，以及计算相关功能所需的产品，存储电路，用于存储窗口功能的乘积和从乘法器传送的语音信号的数字化时间序列，选择器电路 用于传送提供给乘法器的数据，用于以分割方式获得乘积和的加法器，用于存储在加法器中分割获得的积和的先入先出类型的存储电路和控制电路 用于控制所有上述电路。
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公开(公告)号：US4618983A
公开(公告)日：1986-10-21
申请号：US452298
申请日：1982-12-22
CPC分类号： G10L15/12
摘要： Speech recognition executes the final matching operation for each characteristic pattern according to the preliminarily selected order prior to the final matching, where any further calculation in reference to such a characteristic pattern is not executed after a specific condition has been satisfied during the matching calculation, and as result, calculation requirements can be drastically minimized so that the speech recognition can eventually be implemented at higher speed and yet under a sharply reduced cost.
摘要翻译： 语音识别根据最终匹配之前的预先选择的顺序执行每个特征图案的最终匹配操作，其中在匹配计算中已经满足特定条件之后，不执行参考这种特征图案的任何进一步计算，以及 因此，计算要求可以大大降低，从而语音识别最终可以以更高的速度实现，而且大大降低成本。
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