公开(公告)号：US6014094A

公开(公告)日：2000-01-11

申请号：US7848

申请日：1998-01-15

申请人： Takumi Hayashiyama ,  Kazunari Matsui ,  Takaro Mori

发明人： Takumi Hayashiyama ,  Kazunari Matsui ,  Takaro Mori

IPC分类号： G11B20/14 ,  H03M5/14 ,  H03M7/14 ,  H03M5/00 ,  H03M7/00

CPC分类号： H03M5/145 ,  G11B20/1426

摘要： A DSV (Digital Sum Value) control system for use in conversion of a sequence of m-bit digital data codes into at least first and second sequences of n-bit digital modulation codes using a plurality of modulation tables under the DVD (Digital Video Disc) standards, for example. The DSV control system outputs a sequence of modulation codes produced by selecting, in time sequence, one of the codes of the first sequence or one of the codes of the second sequence according to a select signal SB. The select signal SB is provided based on a DSV control enable flag indicating that DSV control enable codes of the first and second sequences will appear at a following address and a select signal SA indicating which of the DSV control enable codes of the first and second sequences should be selected in order to optimize a DSV of the outputted sequence of modulation codes.

摘要翻译： 一种DSV（数字和值）控制系统，用于使用DVD下的多个调制表（数字视频盘）将m位数字数据序列的序列转换成至少第一和第二序列的n位数字调制码 ）标准。 DSV控制系统输出通过根据选择信号SB按时间顺序选择第一序列的代码或第二序列的代码之一而产生的调制码序列。 选择信号SB是基于指示第一和第二序列的DSV控制使能码将出现在跟随地址的DSV控制使能标志提供的，以及选择信号SA，其指示第一和第二序列的DSV控制使能码中的哪一个 应该选择以优化输出的调制码序列的DSV。

公开(公告)号：US5638064A

公开(公告)日：1997-06-10

申请号：US500274

申请日：1995-07-10

申请人： Takaro Mori ,  Kazunari Matsui ,  Takumi Hayashiyama

发明人： Takaro Mori ,  Kazunari Matsui ,  Takumi Hayashiyama

IPC分类号： G11B20/14 ,  H03M5/14 ,  H04L25/49 ,  H03M7/00

CPC分类号： H04L25/4915 ,  H03M5/145 ,  G11B20/1426

摘要： Digital modulating method and apparatus are provided which converts m-bit data codes, in sequence, into digital modulation codes each consisting of n channel bits (n>m) to form a modulation code sequence using connection codes. Bit patterns of portions of the modulation code sequence and the connection codes are changed or additional bit patterns are inserted into the modulation code sequence so as to meet given conditions of a minimum transition interval, a maximum transition interval, and a Digital Sum Value. Demodulating method and apparatus performing a reverse modulation operation are also described.

摘要翻译： 提供了数字调制方法和装置，其将m位数据代码依次转换为每个由n个通道位（n> m）组成的数字调制代码，以使用连接代码形成调制码序列。 改变调制码序列和连接码的部分的位模式，或者将附加位模式插入到调制码序列中，以满足最小转换间隔，最大转换间隔和数字和值的给定条件。 还描述了执行逆调制操作的解调方法和装置。

公开(公告)号：US5239526A

公开(公告)日：1993-08-24

申请号：US605388

申请日：1990-10-30

申请人： Toru Yamagishi ,  Koji Tanaka ,  Takaro Mori

发明人： Toru Yamagishi ,  Koji Tanaka ,  Takaro Mori

IPC分类号： G11B7/005 ,  G11B20/18 ,  G11B21/08

CPC分类号： G11B7/005 ,  G11B20/18 ,  G11B21/085

摘要： In an apparatus for recording/reproducing data on a disc along a spiral track, a track-turn position of a record/reproduce head is changed in response to a kick back signal determined by a value of the register and read/write error signal just after a sector pulse or an address signal in addition to the conventional access command which changes the track-turn position through calculation from address included in the access command and the present address. The change of the track-turn position by the kick back signal makes access time shorter than that which would be done by the conventional access command. Moreover, in such apparatus, execution of the kick back operation is determined at every N sectors, wherein N=M-[T1/T2], where M is the number of sectors of one track turn; T1 is a time interval necessary for changing the record/reproduce head by one track-turn back; T2 is an interval necessary for scanning one sector by the record/reproduce head; and [T1/T2] shows a least natural number more than T1/T2. This makes timing of start for reading/writing earlier after the kick back operation.

摘要翻译： 在用于沿着螺旋轨道在盘上记录/再现数据的装置中，记录/再现头的轨道转动位置响应于由寄存器的值和读/写错误信号确定的反冲信号而改变 除了通过从包括在访问命令和当前地址中的地址的计算而改变轨道转向位置的传统的访问命令之外的扇区脉冲或地址信号之后。 通过反冲信号改变轨道转弯位置使得访问时间比常规访问命令将要进行的访问时间短。 此外，在这种装置中，每N个扇区确定反跳操作的执行，其中N = M- [T1 / T2]，其中M是一个轨道转弯的扇区数; T1是将记录/再现头改变一个回转所需的时间间隔; T2是由记录/再现头扫描一个扇区所需的间隔; 并且[T1 / T2]显示比T1 / T2多的自然数。 这使得在反冲操作之后的早期读/写开始的时间。

公开(公告)号：US4008381A

公开(公告)日：1977-02-15

申请号：US610463

申请日：1975-09-04

申请人： Nobuaki Takahashi ,  Takaro Mori ,  Yoshiki Iwasaki

发明人： Nobuaki Takahashi ,  Takaro Mori ,  Yoshiki Iwasaki

IPC分类号： G11B3/00

CPC分类号： G11B3/00

摘要： A multichannel record disc recording system comprises: a circuit for shaping sum and difference signals from multichannel signals, angle modulating the difference signal, multiplexing the sum signal and the angle-modulated difference signal, and recording the resulting signal on a record disc. A first level control circuit, in the transmission system for the sum signal, operates to attenuate the high-frequency band of components of the sum signal when its level is at a high level. A second level control circuit, in the transmission system of the difference signal, operates to attenuate the middle-high frequency band of components of the difference signal when its level is at a high level. The first level control circuit attenuates the level of the sum signal to prevent an admixing of the higher harmonics of the high frequency component of the sum signal into the band of the angle-modulated difference signal. The second level control circuit attenuates the level of the difference signal to prevent an overdeviation due to overmodulation of the angle-modulated difference signal.

摘要翻译： 多通道记录盘记录系统包括：用于对来自多通道信号的和和信号进行整形的电路，对差分信号进行角度调制，对和信号和角度调制的差分信号进行多路复用，并将得到的信号记录在记录盘上。 在和信号的传输系统中的第一电平控制电路在其电平处于高电平时衰减和信号的分量的高频带。 差分信号的传输系统中的第二电平控制电路在其电平处于高电平时，对差分信号的分量的中高频带进行衰减。 第一电平控制电路衰减和信号的电平，以防止将和信号的高频分量的高次谐波混入角度调制差分信号的频带中。 第二电平控制电路衰减差分信号的电平，以防止由角度调制差分信号的过调制引起的过度偏移。

公开(公告)号：US3947288A

公开(公告)日：1976-03-30

申请号：US482506

申请日：1974-06-24

申请人： Toshio Kawano ,  Takaro Mori ,  Hachiro Kubota

发明人： Toshio Kawano ,  Takaro Mori ,  Hachiro Kubota

IPC分类号： C04B22/14 ,  C04B7/02 ,  C04B7/04 ,  C04B22/00 ,  C04B31/02

CPC分类号： C04B22/008 ,  C04B7/04

摘要： An improved finely pulverized expansive cement additive which causes the cement mortar or concrete mixed therewith to bear increased chemical prestressing property, the clinker of said additive substantially consisting of alite crystals containing fine crystals of calcium oxide therein and a phase substantially consisting of optic-microscopically amorphous calcium sulfate in which said alite crystals are dispersed.

摘要翻译： 一种改进的细粉碎的膨胀水泥添加剂，其使得与其混合的水泥砂浆或混凝土具有增加的化学预应力性能，所述添加剂的熟料基本上由含有细小的氧化钙晶体的Alite晶体组成，以及基本上由光学 - 微观非晶 其中分散有所述有色晶体的硫酸钙。

公开(公告)号：US4499507A

公开(公告)日：1985-02-12

申请号：US429334

申请日：1982-09-30

申请人： Yasuhiro Yamada ,  Takaro Mori

发明人： Yasuhiro Yamada ,  Takaro Mori

IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B20/18 ,  G11B20/20 ,  G11B20/22 ,  G11B27/30 ,  H04N5/926 ,  H04N5/937 ,  G11B15/02

CPC分类号： G11B27/3027 ,  G11B20/10 ,  G11B20/1809 ,  G11B20/20 ,  G11B20/225 ,  H04N5/926 ,  H04N5/937 ,  G11B2220/90 ,  G11B2220/913

摘要： A data reproducing apparatus for reproducing data recorded on multi-tracks, comprises a signal transducer for simultaneously reproducing pre-recorded frame signals from a plurality of tracks on a recording medium, a write-in address generating circuit provided in each of transmission systems for reproduced signals from the tracks obtained in parallel from the signal transducer, for generating a write-in address indicating the number of bits of data within one frame signal from a counter which counts clock pulses having a period equal to the transmission bit rate, a memory into which data within frame signals reproduced from the tracks are written and then read out, and a memory control circuit for controlling the memory so as to successively and recursively apply the data within the frame signals reproduced from the tracks and write in the data at the write-in addresses obtained from the write-in address generating circuit, and read out the written-in data from the memory with the timing arranged after a predetermined time has elapsed.

摘要翻译： 一种用于再现记录在多磁道上的数据的数据再现装置，包括用于同时从记录介质上的多个磁道再现预先记录的帧信号的信号传感器，在每个传输系统中设置的用于再现的写入地址生成电路 来自信号转换器并行获得的轨道的信号，用于产生一个写入地址，该写入地址指示来自计数具有等于传输比特率的周期的时钟脉冲的计数器的一帧信号内的数据位数;存储器 将从磁道再生的帧信号内的数据写入然后读出;以及存储器控制电路，用于控制存储器，以便连续递归地将数据从轨道再现的帧信号中应用，并以写入方式写入数据 - 从写入地址发生电路获得的地址，并用timi从存储器中读出写入数据 在经过预定时间之后排列。

公开(公告)号：US3983505A

公开(公告)日：1976-09-28

申请号：US566072

申请日：1975-04-08

申请人： Yukinobu Ishigaki ,  Takaro Mori

发明人： Yukinobu Ishigaki ,  Takaro Mori

IPC分类号： H03G5/16 ,  H03G9/02 ,  H03F1/36

CPC分类号： H03G5/16 ,  H03G5/165 ,  H03G9/02

摘要： A signal frequency band control system comprises an amplifier for amplifying an input signal. A first differentiation or integration circuit receives an output signal from the amplifier and carries out a primary differentiation or primary integration. A second differentiation or integration circuit is supplied with an output signal from the amplifier and carries out a secondary differentiation or secondary integration. A first gain constant circuit multiplies the output signal from the second differentiation or integration circuit by a first gain constant. A second constant circuit multiplies, by a second gain constant, the signal resulting from the addition of the output signal of the first differentiation or integration circuit and the output signal of the first gain constant circuit. A circuit negatively feeds back, to the amplifier, a signal resulting from the addition of the output signal of the amplifier and the output signal of the second gain constant circuit. The gain constant of one of the first and second gain constant circuits is varied. The cutoff frequency of the frequency band of the output signal of the amplifier is varied in accordance with the variation of the gain constant thus varied.

摘要翻译： 信号频带控制系统包括用于放大输入信号的放大器。 第一微分或积分电路接收来自放大器的输出信号，并执行初级微分或初级积分。 第二微分或积分电路被提供有来自放大器的输出信号并且执行二次微分或二次积分。 第一增益恒定电路将来自第二微分或积分电路的输出信号乘以第一增益常数。 第二恒定电路通过第二增益常数乘以由第一微分或积分电路的输出信号和第一增益恒定电路的输出信号相加产生的信号。 电路向放大器负向反馈由放大器的输出信号和第二增益恒定电路的输出信号产生的信号。 改变第一和第二增益恒定电路之一的增益常数。 放大器的输出信号的频带的截止频率根据变化的增益常数的变化而变化。

公开(公告)号：US5220543A

公开(公告)日：1993-06-15

申请号：US804523

申请日：1991-12-10

申请人： Junji Kuroda ,  Yasuo Haneji ,  Toru Yamagishi ,  Koji Tanaka ,  Takaro Mori ,  Noriyoshi Kokubo ,  Masayuki Suzuki ,  Kunihisa Matsuzaki

发明人： Junji Kuroda ,  Yasuo Haneji ,  Toru Yamagishi ,  Koji Tanaka ,  Takaro Mori ,  Noriyoshi Kokubo ,  Masayuki Suzuki ,  Kunihisa Matsuzaki

IPC分类号： G11B7/08 ,  G11B7/085 ,  G11B7/12 ,  G11B11/105 ,  G11B17/04

CPC分类号： G11B17/0438 ,  G11B11/10534 ,  G11B11/10543 ,  G11B11/10563 ,  G11B11/10576 ,  G11B7/08 ,  G11B7/08582 ,  G11B7/12 ,  G11B11/10552 ,  G11B11/10558

摘要： An optical recording/reproducing system for optically recording and reproducing an information signal on and from an optical disc (31) to be recorded with a plurality of track turns includes a light source (52); an optical head (45b) carrying an objective lens (62) for directing a light beam from the light source (52) to one of the track turns, and a tracking servo actuator for displacing the light beam within a movable range to perform both track feed and tracking servo operations for one of the track turns; the optical head (45b) being stationary with respect to the optical disc (31) while performing the track feed and tracking save operations by displacing the light beam in a radial direction of the optical disc; and a recording area on the optical disc having a radial distance equal to or smaller than the movable range of the tracking servo actuator.

摘要翻译： 用于在要被记录有多个轨道匝的光盘（31）上光学记录和再现信息信号的光学记录/再现系统包括光源（52）; 携带用于将来自光源（52）的光束引导到轨道匝中的一个的光学头（45b）以及用于将光束移动到可移动范围内的跟踪伺服致动器，以执行两个轨迹 对于其中一个轨道匝数进给和跟踪伺服操作; 光头（45b）相对于光盘（31）静止，同时通过在光盘的径向上移动光束来执行轨道馈送和跟踪保存操作; 光盘上的记录区域具有等于或小于跟踪伺服致动器的可移动范围的径向距离。

公开(公告)号：US4551840A

公开(公告)日：1985-11-05

申请号：US452971

申请日：1982-12-27

申请人： Yasuhiko Fujii ,  Isao Owaki ,  Susumu Saito ,  Takaro Mori ,  Shinji Nakamura

发明人： Yasuhiko Fujii ,  Isao Owaki ,  Susumu Saito ,  Takaro Mori ,  Shinji Nakamura

IPC分类号： H03M13/00 ,  G11B5/02 ,  G11B5/86 ,  G11B20/18 ,  H03M13/15 ,  G06F11/10

CPC分类号： G11B5/02 ,  G11B20/1813 ,  G11B5/86 ,  H03M13/15

摘要： A data recording and reproducing apparatus promotes error-free and speedy exchange of data between separate recording media. When desired primary data is to be recorded on a master recording medium, secondary data is added to the primary data in order to detect and correct data errors. The primary and secondary data are recorded on the master recording medium in a plurality of series which differ in recording sequence from each other. The primary data is reproduced from the master recording medium together with the secondary data for the different series at the same time, regardless of their recording sequences. The reproduced primary data is allowed for error check and correction based on the secondary data and is recorded in the slave recording medium.

摘要翻译： 数据记录和再现装置促进在分离的记录介质之间的无错误和快速的数据交换。 当需要主数据被记录在主记录介质上时，辅助数据被添加到主数据中以便检测和纠正数据错误。 主数据和次数据以记录顺序彼此不同的多个系列记录在主记录介质上。 无论其记录顺序如何，主数据与主记录介质一起以及不同系列的次要数据同时再现。 再生的主数据被允许基于次要数据进行错误校验和校正，并被记录在从属记录介质中。

公开(公告)号：US4546393A

公开(公告)日：1985-10-08

申请号：US463083

申请日：1983-02-02

申请人： Takaro Mori ,  Susumu Saito ,  Yasuhiko Fujii

发明人： Takaro Mori ,  Susumu Saito ,  Yasuhiko Fujii

IPC分类号： G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B5/09

CPC分类号： G11B20/10527 ,  G11B20/10 ,  G11B20/1419 ,  G11B20/18 ,  G11B20/1809

摘要： A method and apparatus for digital magnetic recording of data in which digital data is recorded on a magnetic recording medium after being demodulated by the NRZI (Non-Return-to-Zero Inverted) system and read thereoutof timed to magnetic flux reversal caused by the recorded data on the recording medium. The digital data is encoded in a predetermined manner before the NRZI modulation so that at least part of "false" bits contained in the digital data is converted into "true" bits, resulting in an increase in the number of "true" bits. The encoded data is written into the recording medium after the NRZI modulation. In the event of reproduction of the data from the recording medium, self-clocking occurs to generate a data readout timing. The increased number of "true" bits insures desirable self-clocking. The data read from the recording medium is decoded to the original digital data.

摘要翻译： 一种用于数字磁记录的方法和装置，其中数字数据在被NRZI（非归零归零）系统解调之后被记录在磁记录介质上，并被读取，由定时到由记录的 记录介质上的数据。 在NRZI调制之前以预定的方式对数字数据进行编码，使得包含在数字数据中的至少部分“假”位被转换成“真”位，导致“真”位的数目增加。 编码数据在NRZI调制之后被写入记录介质。 在从记录介质再现数据的情况下，发生自时钟以产生数据读出定时。 增加数量的“真实”位确保了理想的自我计时。 从记录介质读取的数据被解码为原始数字数据。