利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

20 条记录 (耗时 0.03 秒)

    Optical information recording/reproducing apparatus using pit edge recording system
    2.
    发明授权
    Optical information recording/reproducing apparatus using pit edge recording system 失效
    使用凹坑边缘记录系统的光信息记录/再现装置

    公开(公告)号：US5414689A

    公开(公告)日：1995-05-09

    申请号：US820593

    申请日：1992-01-27

    申请人： Takeshi Maeda ,  Shinichi Arai ,  Kazuo Isaka ,  Atsushi Saito ,  Takuya Mizokami ,  Histaka Sugiyama ,  Satoshi Kawamura

    发明人： Takeshi Maeda ,  Shinichi Arai ,  Kazuo Isaka ,  Atsushi Saito ,  Takuya Mizokami ,  Histaka Sugiyama ,  Satoshi Kawamura

    IPC分类号： G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/125 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B23/40 ,  G11B7/00

    CPC分类号： G11B7/005 ,  G11B20/10 ,  G11B20/1258 ,  G11B20/1403 ,  G11B20/1833 ,  G11B23/40 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/126 ,  G11B20/1879 ,  G11B2020/1277

    摘要： An information recording/reproducing method is disclosed for an information recording/reproducing apparatus including a recording medium having a disk-like shape, a unit for rotating the recording medium at a constant angular velocity, a unit for recording code information so that the bit length of the code information becomes approximately constant with respect to a radial position on the recording medium, a unit for modulating the code information to be recorded to form a modulated signal, and a recording unit for forming in the recording medium a localized recording region having a different physical property with respect to an unrecorded region, the recording unit being controlled by the modulated signal so that the code information is recorded to correspond to the edge of the recording region, wherein the bit rate of the code information to be recorded changes depending on a location on the recording medium, and a part of each of a recording characteristic of the apparatus and a reproducing characteristic of the apparatus is changed in accordance with a location on the recording medium.

    摘要翻译： PCT No.PCT / JP91 / 00697 Sec。 371日期：1992年1月27日 102（e）日期1992年1月27日PCT提交1991年5月24日PCT公布。 公开号WO91 / 19290 1991年12月12日，日本公开了一种信息记录/重放装置，包括具有盘状形状的记录介质，用于以恒定角速度旋转记录介质的单元，用于记录的单元 代码信息，使得代码信息的位长度相对于记录介质上的径向位置变为近似恒定，用于调制要记录的代码信息以形成调制信号的单元，以及用于在记录中形成的记录单元 介质相对于未记录区域具有不同物理特性的局部记录区域，记录单元由调制信号控制，使得记录信息对应于记录区域的边缘，其中代码的比特率 要记录的信息根据记录介质上的位置而变化，并且记录特性的一部分 e装置和再现特性根据记录介质上的位置而改变。

    Method for recording/reproducing information having a function of correcting variations in the interval in reproduced data and apparatus for realizing same
    3.
    发明授权
    Method for recording/reproducing information having a function of correcting variations in the interval in reproduced data and apparatus for realizing same 失效
    用于记录/再现具有校正再现数据中的间隔变化的功能的信息的方法和用于实现其的装置

    公开(公告)号：US5233589A

    公开(公告)日：1993-08-03

    申请号：US460370

    申请日：1990-01-03

    申请人： Atsushi Saito ,  Takeshi Maeda ,  Shinichi Arai ,  Satoshi Kawamura ,  Takuya Mizokami

    发明人： Atsushi Saito ,  Takeshi Maeda ,  Shinichi Arai ,  Satoshi Kawamura ,  Takuya Mizokami

    IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B20/10 ,  G11B20/12

    CPC分类号： G11B20/10222 ,  G11B20/10009 ,  G11B20/1217

    摘要： In a method for recording/reproducing information, a reference pattern is recorded in a certain predetermined domain so that the leading-edge and the tailing-edge of a certain recorded portion are positioned in a predetermined relationship, when coded bits of data are recorded on a recording medium by forming recorded portions physically different from not recorded portions, while making them correspond to leading-edges and tailing-edges of the recorded portions. A first and a second reproduced signal indicating the leading-edge and the tailing-edge of the recorded portion, respectively, are detected independently from each other from a reproduced waveform corresponding to the recorded portion, which has been thus recorded; and the first and the second reproduced signal are reconstructed while correcting edge shifts produced at recording data by storing the first and second reproduced signal in a memory, so that the first and the second reproduced signal indicate the leading-edge and the tailing-edge of the recorded portion corresponding to the reference pattern, respectively, in the predetermined relationship.

    摘要翻译： 在用于记录/再现信息的方法中，将参考图案记录在特定的预定域中，使得某个记录部分的前沿和后端位于预定关系中，当数据的编码位被记录在 通过在与记录部分物理上不同的记录部分同时使它们对应于所记录部分的前缘和尾边来记录介质。 分别从对应于已记录的记录部分的再现波形彼此独立地检测指示记录部分的前沿和尾边的第一和第二再现信号; 并且通过将第一和第二再现信号存储在存储器中来校正在记录数据处产生的边沿位移，重建第一和第二再现信号，使得第一和第二再现信号指示前沿和后沿 分别对应于参考图案的记录部分以预定关系。

    Track servo pull-in method and apparatus for an optical disc
    7.
    发明授权
    Track servo pull-in method and apparatus for an optical disc 失效
    跟踪光盘的伺服拉入方法和装置

    公开(公告)号：US5307333A

    公开(公告)日：1994-04-26

    申请号：US757940

    申请日：1991-09-12

    申请人： Fumiaki Ikeda ,  Atsushi Saito ,  Takuya Mizokami

    发明人： Fumiaki Ikeda ,  Atsushi Saito ,  Takuya Mizokami

    IPC分类号： G11B21/10 ,  G11B7/085

    CPC分类号： G11B7/08517

    摘要： An optical information memory apparatus in which after a coarse seeking operation to position an optical head to a position near a seeking target address at a high speed has been executed, only at a time point when a light spot has reached a predetermined region from the center of a track near a seeking target address, the pull-in control of the light spot to the track center is executed. The optical information memory apparatus has: a zero-cross pulse generator for receiving a tracking error signal and for producing tracking error zero-cross pulses; and a window comparator for receiving the tracking error signal and for producing tracking error window pulses which are obtained by slicing the tracking error signal by predetermined binary slice levels of an upper limit and a lower limit. Further, at a time point when a period of time of the low level of the tracking error zero-cross pulse is equal to or larger than a predetermined time interval T.sub.0 and the tracking error window pulse has been set to the low level, the tracking control to pull the light spot into the track near the desired seeking target address is executed.

    摘要翻译： 一种光信息存储装置，其中仅在光点已经从中心到达预定区域的时间点执行了在将光头定位到寻求目标地址附近的位置的粗略寻找操作之后， 在追踪目标地址附近的轨道上执行光点到轨道中心的拉入控制。 光信息存储装置具有：零交叉脉冲发生器，用于接收跟踪误差信号并产生跟踪误差零交叉脉冲; 以及窗口比较器，用于接收跟踪误差信号并产生跟踪误差窗口脉冲，该跟踪误差窗口脉冲是通过将跟踪误差信号通过上限和下限的预定二进制限幅电平进行限幅而获得的。 此外，在跟踪误差过零脉冲的低电平的时间段等于或大于预定时间间隔T0并且跟踪误差窗口脉冲已被设置为低电平的时间点，跟踪 执行将光点拉近到期望寻找目标地址附近的轨道的控制。

    Method and apparatus for correctly storing data recorded on a rotational disc-shaped recording medium despite occurrence of clock synchronization disorder
    8.
    发明授权
    Method and apparatus for correctly storing data recorded on a rotational disc-shaped recording medium despite occurrence of clock synchronization disorder 失效
    即使出现时钟同步障碍，也可以正确地存储记录在旋转盘形记录介质上的数据的方法和装置

    公开(公告)号：US5182740A

    公开(公告)日：1993-01-26

    申请号：US755819

    申请日：1991-09-06

    申请人： Takuya Mizokami ,  Shinichi Arai

    发明人： Takuya Mizokami ,  Shinichi Arai

    IPC分类号： G11B5/012 ,  G11B7/005 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/30

    CPC分类号： G11B20/10222 ,  G11B20/10009 ,  G11B20/1258 ,  G11B20/1403 ,  G11B27/3027 ,  G11B5/012 ,  G11B7/005 ,  G11B20/1879 ,  G11B2220/20

    摘要： This invention is intended for MCAV-based information processing which records and/or reproduces data. A disc-shaped recording medium having a record area formed in a plurality of concentric tracks is rotated at a constant angular velocity, the record area is partitioned into a plurality of zones depending on the radial position, base clock frequencies are assigned to the zones so that an outer zone has a higher clock frequency than an inner zone, and data is recorded and reproduced in each zone in accordance with the base clock of the assigned frequency. In recording and reproducing data, a VFO signal recorded together with the unit block data of recording and reproduction (sector) is reproduced thereby to produce a VFO clock which is synchronous with the reproduced VFO signal by means of a phase lock circuit (VFO), and, in introducing reproduced data which follows the VFO signal into the reproduced data introduction circuit, synchronization disorder (sync-disorder) of the VFO clock is detected. At detection of sync-disorder, reproduced data corresponding to recorded data following the data in the sector with the event of sync-disorder is introduced to the reproduced data introduction circuit in response to the VFO clock which is synchronous with the VFO signal recorded together with the recorded data, despite the sync-disorder.

    摘要翻译： 本发明旨在用于记录和/或再现数据的基于MCAV的信息处理。 具有形成在多个同心轨道中的记录区域的盘形记录介质以恒定的角速度旋转，记录区域根据径向位置被划分成多个区域，基准时钟频率被分配给区域 外部区域具有比内部区域更高的时钟频率，并且根据分配频率的基本时钟在每个区域中记录和再现数据。 在记录和再现数据中，再现与记录和再现（扇区）的单位块数据一起记录的VFO信号，从而产生通过锁相电路（VFO）与再现的VFO信号同步的VFO时钟， 并且在将VFO信号之后的再现数据引入再现数据引入电路时，检测到VFO时钟的同步障碍（sync-disorder）。 在检测到同步障碍时，响应于与记录在一起的VFO信号同步的VFO时钟，再现数据引入电路被引入对应于具有同步异常事件的扇区中的数据之后的记录数据的再现数据 记录的数据，尽管同步障碍。

    Data recording/reproducing device
    10.
    发明授权
    Data recording/reproducing device 失效
    数据记录/再现装置

    公开(公告)号：US5523991A

    公开(公告)日：1996-06-04

    申请号：US517324

    申请日：1995-08-21

    申请人： Takuya Mizokami ,  Atsushi Saito ,  Naozane Yoshida ,  Takehiko Sekine

    发明人： Takuya Mizokami ,  Atsushi Saito ,  Naozane Yoshida ,  Takehiko Sekine

    IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/004 ,  G11B20/12 ,  G11B20/14 ,  G11B27/30

    CPC分类号： G11B27/3027 ,  G11B20/12 ,  G11B20/1403 ,  G11B2220/20 ,  G11B2220/2525

    摘要： If information is to be recorded on and reproduced from a recording medium in correspondence between a code train in the form of a run-length-limited code and the positions of the leading edge and the trailing edge data of a status transition pattern such as pits, recording domains, a sync signal is inserted at regular intervals in the information converted in the form of the run-length-limited code. The sync signal is constituted by a code train capable of deciding that the sync signal includes a code not existing in the conversion rule into a run-length-limited code during reproduction using a leading edge data or trailing edge data relative to the transition pattern.

    摘要翻译： 如果信息将被记录在记录介质上，并且以游程长度限制码的形式的代码串与诸如凹坑之类的状态转变模式的前沿和后沿数据的位置对应地从记录介质中记录 在记录域中，在以游程长度限制码的形式转换的信息中以规则的间隔插入同步信号。 同步信号由代码串构成，代码串能够使用相对于转换模式的前沿数据或后沿数据，在重放期间将同步信号包括转换规则中不存在的代码转换为行程限制代码。