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公开(公告)号：US07652540B2
公开(公告)日：2010-01-26
申请号：US11905936
申请日：2007-10-05
申请人： Toshihiro Shigemori
发明人： Toshihiro Shigemori
IPC分类号： H03L7/091
CPC分类号： H03L7/085 , H03D13/003 , H03L7/091 , H03L7/0991
摘要： A digital phase locked loop apparatus includes an input signal time detecting device that detects a phase of an input signal with prescribed time resolution obtained by dividing a cycle of an operation clock generated by a clock generator at a prescribed time. An output clock generating device outputs output clock time data per the one cycle in accordance with frequency control data. The output clock time data has a value corresponding to a phase of a virtual output clock generated by dividing the operation clock in accordance with the time resolution. A phase difference detecting device detects a difference between phases of the input signal and the virtual output clock, and outputs a phase difference signal in accordance with the detection result. The frequency control device changes the frequency control data in accordance with the phase difference signal.
摘要翻译： 数字锁相环装置包括：输入信号时间检测装置，其以规定时间分频由时钟发生器产生的工作时钟的周期，以规定的时间分辨率检测输入信号的相位。 输出时钟产生装置根据频率控制数据输出每一周期的输出时钟时间数据。 输出时钟时间数据具有对应于根据时间分辨率划分操作时钟产生的虚拟输出时钟的相位的值。 相位差检测装置检测输入信号和虚拟输出时钟的相位差，并根据检测结果输出相位差信号。 频率控制装置根据相位差信号改变频率控制数据。
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公开(公告)号：US20080068094A1
公开(公告)日：2008-03-20
申请号：US11905936
申请日：2007-10-05
申请人： Toshihiro Shigemori
发明人： Toshihiro Shigemori
IPC分类号： H03L7/00
CPC分类号： H03L7/085 , H03D13/003 , H03L7/091 , H03L7/0991
摘要： A digital phase locked loop apparatus includes an input signal time detecting device that detects a phase of an input signal with prescribed time resolution obtained by dividing a cycle of an operation clock generated by a clock generator at a prescribed time. An output clock generating device outputs output clock time data per the one cycle in accordance with frequency control data. The output clock time data has a value corresponding to a phase of a virtual output clock generated by dividing the operation clock in accordance with the time resolution. A phase difference detecting device detects a difference between phases of the input signal and the virtual output clock, and outputs a phase difference signal in accordance with the detection result. The frequency control device changes the frequency control data in accordance with the phase difference signal.
摘要翻译： 数字锁相环装置包括：输入信号时间检测装置，其以规定时间分频由时钟发生器产生的工作时钟的周期，以规定的时间分辨率检测输入信号的相位。 输出时钟产生装置根据频率控制数据输出每一周期的输出时钟时间数据。 输出时钟时间数据具有对应于根据时间分辨率划分操作时钟产生的虚拟输出时钟的相位的值。 相位差检测装置检测输入信号和虚拟输出时钟的相位差，并根据检测结果输出相位差信号。 频率控制装置根据相位差信号改变频率控制数据。
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公开(公告)号：US20060203641A1
公开(公告)日：2006-09-14
申请号：US11430140
申请日：2006-05-09
申请人： Toshihiro Shigemori
发明人： Toshihiro Shigemori
IPC分类号： G11B20/10
CPC分类号： G11B27/24 , G11B20/1403 , G11B2220/218 , G11B2220/2562
摘要： A recording clock generating apparatus for a data recording system includes a wobble signal sampler which samples a wobble signal, from wobble grooves of an optical disk. A first phase comparator provides a first phase-difference signal based on a difference in phase between the wobble signal and a first recording clock signal. A prepit detector detects a prepit signal from prepits of the optical disk. A second phase comparator provides a second phase-difference signal based on a difference in phase between the prepit signal and the first recording clock signal. A phase control signal generator provides a phase control signal based on a sum of the first phase-difference signal and the second phase-difference signal. A clock generator provides a second recording clock signal having a phase corrected in response to the phase control signal provided by the phase control signal generator.
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4.发明授权Data recording clock signal generator for generating a recording clock signal for recording data on a recordable medium 失效数据记录时钟信号发生器，用于产生用于在可记录介质上记录数据的记录时钟信号公开(公告)号：US06980499B1
公开(公告)日：2005-12-27
申请号：US09615837
申请日：2000-07-13
申请人： Toshihiro Shigemori
发明人： Toshihiro Shigemori
CPC分类号： G11B20/1403
摘要： When data recording is performed on an optical disk provided with a data recording track wobbled by a wobble signal having predetermined frequency components, a recording clock generator circuit extracts the wobble signal, generates a divided clock signal obtained by dividing the frequency of a recording clock signal at a frequency dividing rate that is set through predetermined procedures and is different from a reference frequency dividing rate, generates a phase difference signal as a result of a comparison between the phase of the wobble signal and the phase of the divided clock signal, generates a frequency control signal obtained based on the phase difference signal, and then generates a recording clock signal having a frequency controlled in accordance with the frequency control signal.
摘要翻译： 当在具有由具有预定频率分量的摆动信号摆动的数据记录轨道的光盘上执行数据记录时，记录时钟发生器电路提取摆动信号，产生通过划分记录时钟信号的频率而获得的分频时钟信号 作为通过预定程序设置并且与参考分频率不同的分频率，作为摆动信号的相位与分频时钟信号的相位之间的比较的结果产生相位差信号，生成 基于相位差信号获得的频率控制信号，然后产生具有根据频率控制信号控制的频率的记录时钟信号。
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公开(公告)号：US06345018B1
公开(公告)日：2002-02-05
申请号：US09633227
申请日：2000-08-04
IPC分类号： G11B700
CPC分类号： G11B27/24 , G11B7/0053 , G11B20/14 , G11B27/3027 , G11B2220/216 , G11B2220/2562
摘要： A device for demodulating position information that is recorded as track wobbling in a record medium by a BPSK scheme includes a carrier-wave-generation circuit which derives a carrier wave from a wobbling signal obtained from the record medium, a phase-adjustment circuit which generates a phase-comparison signal having a 90° phase difference relative to the carrier wave, a multiplier which multiplies the wobbling signal and the phase-comparison signal to supply a product signal, and a detection circuit which detects a phase error of the carrier wave introduced by the carrier-wave-generation circuit by detecting the phase error between the wobbling signal and the phase-comparison signal based on the product signal.
摘要翻译： 用于解调通过BPSK方式记录在记录介质中作为轨道摆动的位置信息的装置包括从从记录介质获得的摆动信号中导出载波的载波产生电路，产生 相位比较信号相对于载波具有90°的相位差;乘法器，用于将摆动信号和相位比较信号相乘以产生乘积信号;以及检测电路，其检测引入的载波的相位误差 由载波产生电路根据产品信号检测摆动信号和相位比较信号之间的相位误差。
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公开(公告)号：US5438601A
公开(公告)日：1995-08-01
申请号：US311144
申请日：1994-09-23
CPC分类号： H03K23/667
摘要： A reference clock frequency divider feasible for a motor drive IC (Integrated Circuit), optical disk drive, hard disk drive or similar apparatus. The frequency divider is capable of setting not only integral frequency division ratios but also decimal frequency division ratios without any circuit modification.
摘要翻译： 电机驱动IC（集成电路），光盘驱动器，硬盘驱动器或类似设备的参考时钟分频器。 分频器不仅可以设置整数分频比，还可以设置十进制分频比，而无需任何电路修改。
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公开(公告)号：US5235576A
公开(公告)日：1993-08-10
申请号：US834171
申请日：1992-02-11
申请人： Toshihiro Shigemori
发明人： Toshihiro Shigemori
CPC分类号： G11B7/0938 , G11B27/19 , G11B27/3027 , G11B7/00745 , G11B7/08505 , G11B2220/20
摘要： An optical disc apparatus for use with an optical disc including on its tracks pairs of servo pattern areas to be recorded with an address pit pattern by using data patterns, each of which indicates a relative track number of the recording track, being repeated in a predetermined cycle; the servo area comprising a pair of wobble pits each being disposed off the center of the recording track in opposite direction with one another, a clock pit disposed on the center of the track and address pit pattern consisting of a plurality of pits disposed on the center of the recording track for indicating relative track number;an optical pick-up device;a relative address detection means to identify the relative track number of the track to which the optical pick-up is accessing and for outputting detected relative address signal; andan address/speed detection means for receiving the relative address signal outputted by the relative address detection means, and detecting an absolute track number of the track to which the optical pick-up is accessing and a travel speed of the optical pick-up device moving across the recording tracks.
摘要翻译： 一种与光盘一起使用的光盘装置，该光盘装置包括在其轨道上，通过使用数据模式（每个指示记录轨道的相对轨道号）以预定的方式重复地记录具有地址坑图案的伺服模式区域对， 周期; 所述伺服区域包括一对摆动凹坑，每个摆动凹坑彼此相反地设置在记录轨道的中心之外，布置在轨道中心的时钟凹坑和由设置在中心上的多个凹坑组成的地址凹坑图案 用于指示相对轨道号的记录轨道; 光学拾取装置; 相对地址检测装置，用于识别光拾取器正在访问的轨道的相对轨道号，并输出检测到的相对地址信号; 以及地址/速度检测装置，用于接收由相对地址检测装置输出的相对地址信号，并且检测光学拾取器正在访问的轨道的绝对轨道号和光学拾取装置的行进速度 在录制轨道上移动。
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公开(公告)号：US5222057A
公开(公告)日：1993-06-22
申请号：US624885
申请日：1990-12-03
CPC分类号： G11B7/0901 , G11B7/0941
摘要： A tracking servo method in an optical disk drive unit has the steps of providing a signal in accordance with a different in voltage level between two signals respectively reproduced from a pair of tracking sample flags arranged in positions shifted by predetermined distances from a tracking center on an optical disk; setting the signal in accordance with the voltage level difference to a tracking error signal; and positioning a light spot on the optical disk in the tracking center using the tracking error signal. The tracking servo method further has the step of normalizing the tracking error signal by a signal indicative of a difference between an average value of the two reproducing signals and a signal reproduced from a sample flag approximately arranged in the tracking center on the optical disk.
摘要翻译： 在光盘驱动单元中的跟踪伺服方法具有以下步骤：根据布置在距离跟踪中心偏移了预定距离的位置的一对跟踪样本标记分别再现的两个信号之间提供根据不同电压电平的信号 光盘; 根据电压电平差将信号设置为跟踪误差信号; 并使用跟踪误差信号将光斑定位在跟踪中心的光盘上。 跟踪伺服方法还具有通过表示两个再现信号的平均值与从大致布置在光盘上的跟踪中心的采样标志重现的信号的信号对跟踪误差信号进行归一化的步骤。
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9.发明授权Optical disk apparatus with data transfer rate and rotational speed variable by annular zones 失效具有数据传输速率和旋转速度由环形区域变化的光盘设备
公开(公告)号：US5063552A
公开(公告)日：1991-11-05
申请号：US375573
申请日：1989-07-05
申请人： Toshihiro Shigemori
发明人： Toshihiro Shigemori
IPC分类号： G11B19/28 , G11B7/004 , G11B19/247
CPC分类号： G11B19/247 , G11B7/004
摘要： A control system is provided for an optical disk driving apparatus adapted to rotate an optical disk having a plurality of tracks, and which is adapted, during the rotation of the disk, to perform optical recording and/or reproduction of information for a track which has been accessed with a light beam. The control system changes the speed f of recording/reproduction of information in accordance with the radius r of a track to be accessed in such a manner that the tracks are divided into a plurality of concentric annular blocks each having different approximate radii, and the same speed f of the recording/reproduction of information is allocated to the tracks in the same block but different speeds f of recording and/or reproduction of information are allocated to the respective blocks. The controlling system changes the speed n of rotation of the optical disk with respect to the radius r of the track to be accessed and the speed f of record/reproduction of information allocated to the block including the track to be accessed so that f/(n.multidot.r) is constant.
摘要翻译： 提供了一种用于光盘驱动装置的控制系统，该光盘驱动装置适于旋转具有多个轨道的光盘，并且其在盘的旋转期间适于执行光盘记录和/或再现用于具有 被光束访问。 控制系统根据要访问的轨道的半径r来改变记录/再现信息的速度f，使得轨道被分成多个具有不同近似半径的同心环形块，并且相同 将信息的记录/再现的速度f分配给相同块中的轨道，但是将不同的信息记录和/或再现的速度f分配给各个块。 控制系统相对于待访问的轨道的半径r和分配给包括要被访问的轨道的块的信息的记录/再现的速度f改变光盘的旋转速度n，使得f /（ nxr）是常数。
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公开(公告)号：US4816722A
公开(公告)日：1989-03-28
申请号：US133640
申请日：1987-12-16
申请人： Toshihiro Shigemori
发明人： Toshihiro Shigemori
CPC分类号： G11B19/28 , H03L7/0994 , Y10S388/911 , Y10S388/912
摘要： A phase-locked loop filter applicable to a motor speed control of an optical disk apparatus and others counts a difference in phase between an input signal to a phase-locked loop and an output signal of the loop, integrates the resulting counts modulo a predetermined value which is dependent upon the period of a clock, produces an overflow signal every time an overflow occurs, and generates the output signal by dividing the frequency of the overflow signal.
摘要翻译： 适用于光盘装置等的电动机速度控制的锁相环滤波器计数到锁相环的输入信号和环路的输出信号之间的相位差，将所得到的计数模数化为预定值 这取决于时钟周期，每当发生溢出时产生溢出信号，并且通过除以溢出信号的频率来产生输出信号。
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