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公开(公告)号：US4453250A
公开(公告)日：1984-06-05
申请号：US324815
申请日：1981-11-25
申请人： Susumu Hoshimi , Tadashi Kojima
发明人： Susumu Hoshimi , Tadashi Kojima
CPC分类号： G11B20/1809 , G11B20/1876
摘要： A PCM signal processing apparatus adapted to receive successive transmission blocks, each of which comprise time-interleaved PCM data, error correction and error detection words, and which comprises a detecting circuit responsive to error detecting words for detecting if a received transmission block contains an error, error identifying means for identifying as erroneous each of the time-interleaved words included in the received transmission block which has been detected as containing an error, de-interleaving means for time-deinterleaving each received transmission block to recover a de-interleaved block which comprises de-interleaved PCM and error-correction words. An error compensating device is responsive to the identification by the error identifying device for compensating at least the erroneous PCM word in the de-interleaved block with a substitute PCM word when the error syndrome indicates the presence of an erroneous PCM word and the error correction device cannot detect the error or the location of the erroneous word is unknown. An inhibit device for inhibiting the error compensating device during the state when the location of the erroneous word is unknown follows a predetermined number of blocks, and slew rate control device or filter device is coupled to the de-interleaving device for passing the de-interleaved PCM word at a predetermined slew rate, and switching device is responsive to the output of the inhibit device and for selecting the slew rate of the control device or the filter device.
摘要翻译： 一种PCM信号处理装置，适于接收连续的传输块，每个传输块包括时间交织的PCM数据，纠错和错误检测字，并且包括响应于错误检测字的检测电路，用于检测接收到的传输块是否包含错误 用于将被检测为包含错误的接收到的发送块中包括的每个时间交织字识别为错误识别装置，用于对每个接收到的发送块进行时间去交织的解交织装置来恢复去交织块， 包括解交织PCM和纠错字。 错误补偿装置响应于错误识别装置的识别，当错误校正指示存在错误的PCM字时，错误校正装置用于补偿至少具有替代PCM字的解交织块中的错误PCM字 无法检测到错误或错误字词的位置未知。 在错误字的位置未知的状态期间用于禁止误差补偿装置的禁止装置在预定数量的块之后，并且压摆率控制装置或滤波器装置耦合到解交织装置，用于使解交织的 PCM字，并且开关装置响应禁止装置的输出并选择控制装置或滤波装置的转换速率。
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公开(公告)号：US4417283A
公开(公告)日：1983-11-22
申请号：US283240
申请日：1981-07-14
申请人： Susumu Hoshimi , Tadashi Kojima
发明人： Susumu Hoshimi , Tadashi Kojima
CPC分类号： G11C5/066 , G11B20/10527 , G11B20/1208 , G11B2020/10537 , G11B2020/10546 , G11B2220/90
摘要： A digital signal processing system in which the actual signal data obtained through digitalization of the information signal and control data of the digital control signals are used for the control of the actual signal data and are transmitted together with a sync signal between two circuits wherein the control data are provided to at least part of an actual signal data transmission line for transmitting the various data and the control data are transmitted during the period of absence of an actual signal data on the transmission line or during the period of the sync signal.
摘要翻译： 一种数字信号处理系统，其中通过信息信号的数字化获得的实际信号数据和数字控制信号的控制数据被用于实际信号数据的控制，并且与两个电路之间的同步信号一起发送，其中控制 将数据提供给用于发送各种数据的实际信号数据传输线的至少一部分，并且在传输线路上或在同步信号的周期期间在实际信号数据不存在的时段期间发送控制数据。
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公开(公告)号：US4451920A
公开(公告)日：1984-05-29
申请号：US324816
申请日：1981-11-25
申请人： Susumu Hoshimi , Tadashi Kojima
发明人： Susumu Hoshimi , Tadashi Kojima
CPC分类号： G11B20/1809
摘要： A PCM signal processing apparatus adapted to receive successive transmission blocks, each of which comprise time-interleaved PCM data, error correction and error detection words. The apparatus has detecting means responsive to the error detection words for detecting errors in a received transmission block and error identifying means for identifying errors in each of the time-interleaved words included in the received transmission block which has been detected. A de-interleaver is provided for time-deinterleaving each received transmission block to recover a de-interleaved block comprising de-interleaved PCM and error-correction words, with errors in the de-interleaved words being respectively identified. A syndrome generating device is coupled to the de-interleaver for generating error syndromes using the de-interleaved PCM and error-correction words in the de-interleaved block. An error correcting device responsive to the error syndromes corrects erroneous PCM words in the de-interleaved block as a function of the remaining error free PCM and the error-correction words in the de-interleaved block. An error compensating device is responsive to the identification of errors by the error identifying device and compensates the erroneous PCM words in the de-interleaved block with a substitute PCM word when error correction by said error correcting device is impossible. An inhibit device inhibits the error correcting device when all of the error detection words in the de-interleaved block are identified as erroneous and it discontinues inhibiting when the relationship between the identification by the error identifying device and the error syndrome indicates that no error exists.
摘要翻译： PCM信号处理装置，适于接收连续的传输块，每个发送块包括时间交织的PCM数据，纠错和错误检测字。 该装置具有响应于用于检测接收到的传输块中的错误的错误检测字的检测装置和用于识别已经检测到的所接收的发送块中包括的每个时间交织字中的错误的错误识别装置。 提供去交错器用于对每个接收到的传输块进行时间去交织以恢复包括解交织的PCM和纠错字的解交织块，其中分别对每个已解交织的字中的错误进行识别。 校正子产生装置被耦合到解交织器，用于使用解交织块中的解交织PCM和纠错字产生误差综合征。 响应于错误综合征的纠错装置根据解交织块中的剩余无错PCM和纠错字校正解交织块中的错误PCM字。 误差补偿装置响应错误识别装置的错误识别，并且在由错误校正装置进行纠错是不可能的情况下用替代PCM字补偿解交织块中的错误PCM字。 当解交织块中的所有错误检测字被识别为错误时，禁止装置禁止纠错装置，并且当错误识别装置的识别与错误校正之间的关系表示没有错误存在时，禁止装置停止禁止。
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公开(公告)号：US4446490A
公开(公告)日：1984-05-01
申请号：US322279
申请日：1981-11-17
申请人： Susumu Hoshimi , Tadashi Kojima
发明人： Susumu Hoshimi , Tadashi Kojima
CPC分类号： G11B5/09 , G11B27/032 , G11B27/323 , G11B2220/90
摘要： A PCM signal processor having a signal input terminal which receives a PCM data signal, a memory for storing the PCM data signal, a standardized signal input terminal for providing a standardized signal corresponding to a synchronizing signal for synchronizing the PCM data signal reproducing apparatus, an address counter for designating the address of the memory which is to be read and means for providing said address counter with preset data in response to the standardized signal.
摘要翻译： 一种具有接收PCM数据信号的信号输入端的PCM信号处理器，存储PCM数据信号的存储器，用于提供与用于同步PCM数据信号再现装置的同步信号相对应的标准化信号的标准化信号输入端， 用于指定要读取的存储器的地址的地址计数器，以及响应于标准化信号向所述地址计数器提供预置数据的装置。
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公开(公告)号：US4404602A
公开(公告)日：1983-09-13
申请号：US322278
申请日：1981-11-17
申请人： Susumu Hoshimi , Tadashi Kojima
发明人： Susumu Hoshimi , Tadashi Kojima
CPC分类号： G11B5/86 , G11B27/032 , G11B2220/90 , G11B2220/913
摘要： A PCM (pulse code modulation) signal recording system including a first signal processor for processing a recording signal into a predetermined PCM signal, a second signal processor for processing a reproduced PCM signal into a recording signal, a first clock signal generator generating a master clock signal, a second clock signal generator generating at least one recording clock signal from the master clock signal, the recording clock signal is supplied to the first signal processor, a third clock signal generator generating at least one reproducing clock signal from the master clock signal, the reproducing clock signal is supplied to the second signal processor, a comparator digitally comparing the phases of the second and third clock signals and producing a control signal, and a controller receiving the control signal and controlling the second or third clock signal so that they are synchronized.
摘要翻译： 一种PCM（脉冲编码调制）信号记录系统，包括用于将记录信号处理成预定PCM信号的第一信号处理器，用于将再现的PCM信号处理成记录信号的第二信号处理器，产生主时钟的第一时钟信号发生器 信号，第二时钟信号发生器，从主时钟信号产生至少一个记录时钟信号，记录时钟信号被提供给第一信号处理器，第三时钟信号发生器，从主时钟信号产生至少一个再现时钟信号， 再现时钟信号被提供给第二信号处理器，数字比较第二和第三时钟信号的相位并产生控制信号的比较器，以及接收控制信号并控制第二或第三时钟信号的控制器，使得它们是 同步
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公开(公告)号：US4063137A
公开(公告)日：1977-12-13
申请号：US662951
申请日：1976-03-01
申请人： Susumu Hoshimi , Toshio Sato
发明人： Susumu Hoshimi , Toshio Sato
CPC分类号： H02P3/24
摘要： An electric braking circuit for a.c. motors is disclosed. When the a.c. power is cut off from the motor windings, at the same time a switch is thrown to connect the a.c. source of power to the same windings via a rectifier and a smoothing circuit, to thereby bring the motor to an immediate smooth stop.
摘要翻译： 一种直流电动制动电路 电动机被公开。 当a.c. 电源从电机绕组中断开，同时切换开关连接交流电源。 通过整流器和平滑电路向相同绕组供电，从而使电机立即平稳停止。
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公开(公告)号：USRE35302E
公开(公告)日：1996-07-23
申请号：US74015
申请日：1993-06-09
申请人： Susumu Hoshimi , Takayasu Muto
发明人： Susumu Hoshimi , Takayasu Muto
CPC分类号： G11B5/5547
摘要： A magnetic disc apparatus wherein off-track quantities are stored with regard to reference servo tracks formed circularly in divided data areas on a magnetic disc and, at the time of displacing the magnetic head, the head is shifted an extent of the stored off-track quantity after being once positioned by a head position detector. Gradients of the off-track quantities corresponding to tracks at individual temperatures in the apparatus are previously stored and, after the actual temperature is detected by means of a temperature sensor, the off-track quantity relative to the reference servo track is corrected in accordance with the gradient of the off-track quantity to the relevant track at the detected temperature, whereby just tracking is achieved. The magnetic head can be positioned exactly with respect to a desired data track while the head displacement time is shortened. Furthermore, data can be written in the entire length of each circular data track to enhance the efficiency of utilizing the magnetic disc, and high-precision tracking is attainable with the off-track quantity reduced to zero in any data track.
摘要翻译： 一种磁盘装置，其中关于在磁盘上的分割数据区中循环形成的参考伺服磁道存储偏离磁道量，并且在磁头移位时，磁头在存储的偏离磁道的范围内移动 经过头位置检测器定位后的数量。 预先存储对应于设备中各个温度下的轨道的偏离轨迹量的梯度，并且在通过温度传感器检测到实际温度之后，根据相对于参考伺服轨迹的偏离轨道量被校正 在检测到的温度下偏离轨道数量与相关轨迹的梯度，从而实现跟踪。 当头部位移时间缩短时，磁头可以相对于期望的数据轨道精确定位。 此外，可以在每个圆形数据轨道的整个长度上写入数据，以提高利用磁盘的效率，并且可以在任何数据轨道中将偏移量减少到零来实现高精度跟踪。
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公开(公告)号：US5235478A
公开(公告)日：1993-08-10
申请号：US625487
申请日：1990-12-11
申请人： Susumu Hoshimi , Hiroyuki Suzukawa
发明人： Susumu Hoshimi , Hiroyuki Suzukawa
CPC分类号： G11B5/59655 , G11B21/085 , G11B5/5556
摘要： A disc drive apparatus with a tracking servomechanism, comprising at least one disc medium having data surfaces where servo signal and data signal are recorded; transducer means having a first head for reproducing the data signal from the data tracks in a playback mode, and a second head for recording the data signal on the data tracks in a recording mode; a rotary arm for supporting the transducer means at one end thereof; actuator motor means for driving the rotary arm in a manner to move the transducer means over the data tracks; servo signal processing means for receiving and processing the servo signal reproduced by the transducer means and outputting first and second servo control signals; and positioning control means for controlling the actuator motor means in the playback and recording modes respectively in accordance with the first and second servo control signals so that the first head of the transudcer means is positioned precisely on any selected one of the data tracks in the playback mode and also that the second head is positioned precisely on any selected one of the data tracks in the recording mode.
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9.发明授权Magnetic recording disk in which the level of the surface of the data tracks, and servo tracks is higher than that of the guardbands 失效磁记录盘，其中数据轨迹的表面水平和伺服轨道高于保护带的水平
公开(公告)号：US5138511A
公开(公告)日：1992-08-11
申请号：US495784
申请日：1990-03-19
申请人： Susumu Hoshimi , Ichiroh Saitoh
发明人： Susumu Hoshimi , Ichiroh Saitoh
CPC分类号： G11B5/82 , G11B5/59633
摘要： A magnetic recording disk in which the level of the surface of the data tracks and servo tracks is higher than that of the guardbands.
摘要翻译： 一种磁记录盘，其中数据轨道和伺服轨道的表面的电平高于保护带的表面。
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10.发明授权
公开(公告)号：US4974109A
公开(公告)日：1990-11-27
申请号：US81651
申请日：1987-08-04
申请人： Susumu Hoshimi , Takayasu Muto
发明人： Susumu Hoshimi , Takayasu Muto
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A magnetic disc apparatus wherein off-track quantities are stored with regard to reference servo tracks formed circularly in divided data areas on a magnetic disc and, at the time of displacing the magnetic head, the head is shifted an extent of the stored off-track quantity after being once positioned by a head position detector. Gradients of the off-track quantities corresponding to tracks at individual temperatures in the apparatus are previously stored and, after the actual temperature is detected by means of a temperature sensor, the off-track quantity relative to the reference servo track is corrected in accordance with the gradient of the off-track quantity to the relevant track at the detected temperature, whereby just tracking is achieved. The magnetic head can be positioned exactly with respect to a desired data track while the head displacement time is shortened. Furthermore, data can be written in the entire length of each circular data track to enhance the efficiency of utilizing the magnetic disc, and high-precision tracking is attainable with the off-track quantity reduced to zero in any data track.
摘要翻译： 一种磁盘装置，其中关于在磁盘上的分割数据区中循环形成的参考伺服磁道存储偏离磁道量，并且在磁头移位时，磁头在存储的偏离磁道的范围内移动 经过头位置检测器定位后的数量。 预先存储对应于设备中各个温度下的轨道的偏离轨迹量的梯度，并且在通过温度传感器检测到实际温度之后，根据相对于参考伺服轨迹的偏离轨道量被校正 在检测到的温度下偏离轨道数量与相关轨迹的梯度，从而实现跟踪。 当头部位移时间缩短时，磁头可以相对于期望的数据轨道精确定位。 此外，可以在每个圆形数据轨道的整个长度上写入数据，以提高利用磁盘的效率，并且可以在任何数据轨道中将偏移量减少到零来实现高精度跟踪。
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