公开(公告)号：US5077715A

公开(公告)日：1991-12-31

申请号：US584122

申请日：1990-09-18

申请人： Takuya Mizokami ,  Kazuo Shigematsu ,  Shinichi Arai

发明人： Takuya Mizokami ,  Kazuo Shigematsu ,  Shinichi Arai

IPC分类号： G11B20/10 ,  G11B7/09 ,  G11B20/12 ,  G11B20/18 ,  G11B27/36

CPC分类号： G11B20/1883 ,  G11B20/1258 ,  G11B27/36 ,  G11B7/0938 ,  G11B2220/20

摘要： In an information recording and reproducing apparatus for recording or reproducing information to/from tracks by irradiating a light spot to an optical disk in which N sectors are included per track and the number of necessary alternating sectors per track is set to M, the apparatus has a track format such that when a desired moving time of the light spot between the adjacent tracks is k times as long as a desired sector passing time of the light spot, M or more alterating sectors are arranged subsequent to the ordinary sectors to record user's data. The light spot jumps between the tracks for a period of time corresponding to k sectors. Thus, the recording of information to a certain track and the subsequent reading check (Read After Write) can be effectively executed at a high speed.

公开(公告)号：US5124967A

公开(公告)日：1992-06-23

申请号：US547841

申请日：1990-07-03

申请人： Kazuo Isaka ,  Kazuo Shigematsu ,  Osami Kushizaki ,  Masahiro Takasago ,  Takuya Mizokami

发明人： Kazuo Isaka ,  Kazuo Shigematsu ,  Osami Kushizaki ,  Masahiro Takasago ,  Takuya Mizokami

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B7/0055 ,  G11B20/10 ,  H03G3/20

CPC分类号： H03G3/3084 ,  G11B20/10009 ,  G11B20/10027 ,  G11B7/005

摘要： An amplitude difference between a reproduction signal from a preformat portion of an optical disk and a reproduction signal from a recording portion of user's data is obtained. When the amplitude difference exceeds a predetermined value, a first gain value which was set for information from the preformat portion is used as a gain value of an AGC circuit for reproduction and a gain control of the reproduction signal is performed. On the other hand, when the amplitude difference is smaller than the predetermined value, a second gain value which was set for the user's data is used. Thus, a situation such that a noise and a remaining signal of the user's data which was not erased are erroneously recognized as an inherent reproduction signal can be prevented. A discrimination to see if the data has been recorded in the recording portion of the user's data or not can be also accurately performed.

公开(公告)号：US5559777A

公开(公告)日：1996-09-24

申请号：US428057

申请日：1995-04-25

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

发明人： Takeshi Maeda ,  Shinichi Arai ,  Kazuo Isaka ,  Atsushi Saito ,  Takuya Mizokami ,  Hisataka 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 ,  G11B5/09

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： 公开了一种信息记录/再现方法，用于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的信息记录/再现装置，用于记录代码信息的单元，使得位长度 代码信息相对于记录介质上的径向位置变得近似恒定，用于调制要记录的代码信息以形成调制信号的单元，以及记录单元，用于在记录介质中形成具有 相对于未记录区域的不同物理特性，记录单元由调制信号控制，使得代码信息被记录为对应于记录区域的边缘，其中要记录的代码信息的比特率根据 记录介质上的位置，以及装置和记录介质的记录特性的一部分 根据记录介质上的位置改变设备的生产特性。

公开(公告)号：US4916683A

公开(公告)日：1990-04-10

申请号：US304899

申请日：1989-02-01

申请人： Takuya Mizokami ,  Shinichi Arai

发明人： Takuya Mizokami ,  Shinichi Arai

IPC分类号： G11B7/085 ,  G11B7/007 ,  G11B7/09 ,  G11B19/04

CPC分类号： G11B19/04 ,  G11B7/00745

摘要： When it is detected that the light spot stays in a same track for a time exceeding a predetermined length of time, the light spot is moved to any other track. Thus, the light spot is prevented from staying on a same track for a long time without recording/reproducing data.

摘要翻译： 当检测到光点停留在相同的轨道中超过预定时间长度的时间时，光斑被移动到任何其他轨道。 因此，防止光斑长时间停留在相同的轨道上而不记录/再现数据。

公开(公告)号：US5524103A

公开(公告)日：1996-06-04

申请号：US308868

申请日：1994-09-19

申请人： Kikuo Shimizu ,  Shinichi Arai ,  Takuya Mizokami ,  Takeshi Maeda ,  Atsushi Saito

发明人： Kikuo Shimizu ,  Shinichi Arai ,  Takuya Mizokami ,  Takeshi Maeda ,  Atsushi Saito

IPC分类号： G11B20/10 ,  G11B5/012 ,  G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B7/007 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/30

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

摘要： In recording and/or reproducing data into and from a disk record medium having a record medium in which a plurality of tracks are arranged radially, the record area is divided into a plurality of zones, and a clock frequency is assigned to each zone. The data recording and/or reproducing are performed according to the clock of the frequency assigned to the respective zone. Each zone is subdivided to include a plurality of tracks, and a clock having a different frequency is assigned to each zone. Each frequency is set in such a manner that the record capacity of the track gradually becomes larger as the zone is nearer to the outer zone.

摘要翻译： 在记录和/或再现数据到具有其中多个轨迹被放置在其中的记录介质的磁盘记录介质的数据中，记录区域被划分成多个区域，时钟频率被分配给每个区域。 数据记录和/或再现根据分配给各个区域的频率的时钟来执行。 每个区域被细分为包括多个轨道，并且具有不同频率的时钟被分配给每个区域。 每个频率被设置为使得轨道的记录容量随着区域更靠近外部区域而逐渐变大。

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。

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。

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。

公开(公告)号：US06442117B1

公开(公告)日：2002-08-27

申请号：US08474137

申请日：1995-06-07

申请人： Eisaku Saiki ,  Takuya Mizokami ,  Naoto Matsunami ,  Toshimitsu Kaku

发明人： Eisaku Saiki ,  Takuya Mizokami ,  Naoto Matsunami ,  Toshimitsu Kaku

IPC分类号： G11B70045

CPC分类号： G11B19/02 ,  G11B7/005 ,  G11B20/10 ,  G11B20/1403 ,  G11B20/18

摘要： A reproducing apparatus including a reading apparatus for reading signals recorded on a recording medium, a reproducing apparatus for reproducing data from read-out signals from the reading apparatus, an error detector for detecting an error in the data reproduced by the reproducing apparatus, a phase-synchronizing apparatus for synchronizing signals, for the reproducing apparatus, a characteristic changing apparatus for changing reproduction characteristics of the reproducing apparatus of loop characteristics of the phase-synchronizing apparatus, when the error detector detects an error on any one of a track on the recording medium, and a retry apparatus for retrying reading of a track on which the error is detected, under changed reproduction characteristics.

摘要翻译： 一种重放装置，包括用于读取记录在记录介质上的信号的读取装置，用于从读取装置读出的信号再现数据的再现装置，用于检测由再现装置再现的数据中的错误的误差检测器， - 用于同步信号的同步装置，用于再现装置，用于改变相位同步装置的环路特性的再现装置的再现特性的特性改变装置，当误差检测器检测到记录上的任一轨道上的错误时 介质和重试装置，用于在改变的再现特性下重试对其上检测到错误的轨道的读取。

公开(公告)号：US5519683A

公开(公告)日：1996-05-21

申请号：US288109

申请日：1994-08-10

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 ,  H04N5/76 ,  G11B5/09

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。