公开(公告)号：US5452279A

公开(公告)日：1995-09-19

申请号：US34424

申请日：1993-03-19

申请人： Tsuneshi Yokota ,  Katsumi Suzuki ,  Tomohisa Yoshimaru

发明人： Tsuneshi Yokota ,  Katsumi Suzuki ,  Tomohisa Yoshimaru

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B7/007 ,  G11B19/02 ,  G11B19/12

CPC分类号： G11B19/12 ,  G11B19/02 ,  G11B7/0053 ,  G11B2007/0006 ,  G11B7/00736

摘要： The recording scheme of an optical disk is initially determined by a cartridge identifier housing the optical disk. The optical disk is then rotated at a rotational speed corresponding to the initially determined recording scheme, and a signal processing circuit is switched. Management data recorded on the optical disk is read to also determine the recording scheme, thereby improving the reliability of the determination. When no management data can be read, a recording scheme and associated rotational speed are changed. The management data representing the recording scheme is then read according to the changed recording scheme. A medium type determined based on the management data has priority over that of the medium type obtained by the identifier of the cartridge.

摘要翻译： 光盘的记录方案最初由容纳光盘的盒标识符确定。 然后以对应于初始确定的记录方案的旋转速度旋转光盘，并切换信号处理电路。 读取记录在光盘上的管理数据也确定记录方案，从而提高确定的可靠性。 当不能读取管理数据时，改变记录方案和相关联的转速。 然后根据改变的记录方案读取表示记录方案的管理数据。 基于管理数据确定的介质类型优先于由盒的标识符获得的介质类型。

公开(公告)号：US5410522A

公开(公告)日：1995-04-25

申请号：US25776

申请日：1993-03-03

申请人： Tsuneshi Yokota ,  Katsumi Suzuki ,  Tomohisa Yoshimaru

发明人： Tsuneshi Yokota ,  Katsumi Suzuki ,  Tomohisa Yoshimaru

IPC分类号： G11B7/00 ,  G11B7/0037 ,  G11B7/004 ,  G11B7/005 ,  G11B19/12 ,  G11B19/28 ,  G11B20/10 ,  G11B17/22

CPC分类号： G11B7/005 ,  G11B19/12 ,  G11B19/28 ,  G11B20/10 ,  G11B7/0037

摘要： An apparatus, having a spindle motor for rotating a circular optical disk, for recording information on the optical disk rotated by the spindle motor, and reproducing information recorded on the optical disk, wherein whether the recording scheme of the optical disk is a mark interval or mark length recording scheme is discriminated, and information is recorded or recorded information is reproduced while the optical disk is rotated at a rotational speed corresponding to the discriminated recording scheme. In an apparatus for recording/reproducing information in accordance with both the mark interval and mark length recording schemes, a signal amplifier, a demodulation circuit, a modulation circuit, an error correction circuit, a buffer memory, an interface circuit, and the like can be commonly used between the two recording schemes, thereby decreasing the number of signal processing circuits.

摘要翻译： 一种装置，具有用于使圆形光盘旋转的主轴电机，用于记录由主轴电动机旋转的光盘上的信息，以及再现记录在光盘上的信息，其中光盘的记录方案是否是标记间隔， 识别标记长度记录方案，并且在光盘以与所识别的记录方案对应的旋转速度旋转的同时记录信息或记录信息。 在根据标记间隔和标记长度记录方案记录/再现信息的装置中，信号放大器，解调电路，调制电路，纠错电路，缓冲存储器，接口电路等可以 通常在两个记录方案之间使用，从而减少信号处理电路的数量。

公开(公告)号：US5199022A

公开(公告)日：1993-03-30

申请号：US858620

申请日：1992-03-27

申请人： Katsumi Suzuki ,  Tsuneshi Yokota ,  Tomohisa Yoshimaru

发明人： Katsumi Suzuki ,  Tsuneshi Yokota ,  Tomohisa Yoshimaru

IPC分类号： G11B11/10 ,  G11B7/007 ,  G11B11/105 ,  G11B27/30

CPC分类号： G11B27/3027 ,  G11B11/10502 ,  G11B11/10552 ,  G11B11/10563 ,  G11B11/10582 ,  G11B7/00718

摘要： A magneto-optical data reading member includes a transparent disk substrate, and land-shaped areas formed on the disk substrate in a spiral manner so as to be parallel with each other, and groove-shaped areas formed to be stepped with respect to the land-shaped areas, wherein each of the land-shaped and groove-shaped areas has, in a surface region thereof, a first magnetic film for reading data having a predetermined Curie temperature and a predetermined magnetic coercive force, and a second magnetic film for reading data, formed on the first magnetic film, having a Curie temperature higher than the predetermined Curie temperature and a magnetic coercive force higher than the predetermined magnetic coercive force, and having a plurality of memory pits in series according to the information data to be recorded.

摘要翻译： 磁光数据读取构件包括透明盘基片和形成在盘基片上的螺旋状地彼此平行的盘形区域，以及形成为相对于陆地台阶的槽形区域 形状区域，其中，所述平面形状区域和所述槽状区域中的每一个在其表面区域中具有用于读取具有预定居里温度和预定磁矫顽力的数据的第一磁性膜和用于读取的第二磁性膜 数据，形成在第一磁性膜上，具有高于预定居里温度的居里温度和高于预定矫顽磁力的磁矫顽力，并且根据待记录的信息数据具有多个存储凹坑串联。

公开(公告)号：US5469417A

公开(公告)日：1995-11-21

申请号：US214217

申请日：1994-03-17

申请人： Koki Tanoue ,  Tsuneshi Yokota ,  Tomohisa Yoshimaru

发明人： Koki Tanoue ,  Tsuneshi Yokota ,  Tomohisa Yoshimaru

IPC分类号： G11B20/12 ,  G11B7/0045 ,  G11B7/005 ,  G11B19/28 ,  G11B20/14 ,  G11B27/19 ,  G11B27/30 ,  H03L7/087 ,  H03L7/191 ,  G11B7/00

CPC分类号： H03L7/191 ,  G11B20/1403 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/0045 ,  G11B7/005 ,  H03L7/087 ,  G11B20/1258 ,  G11B2220/20

摘要： An optical disk apparatus records data on an optical disk or reproduces data therefrom. The optical disk has a plurality of zones each including a plurality of tracks, and the optical disk apparatus records or reproduces data with respect to the zones on the basis of clock signals having different frequencies. The optical disk apparatus comprises first and second phase comparators. The first phase comparator is a pull-in type and outputs a signal corresponding to the phase difference between a clock signal generated by a PLL circuit and a binary signal of reproduction data. The second phase comparator is a lock-in type and outputs a signal corresponding to the phase difference between a signal obtained by frequency-dividing the clock signal generated by the PLL circuit and a signal obtained by frequency-dividing a fundamental clock signal. When data is to be recorded or when the timings at which the PLL circuit outputs clock signals are not appropriate, the clock signals of the PLL circuit are processed by a voltage controlled oscillator in accordance with a signal supplied from the pull-in type first phase comparator. When data is to be reproduced, the clock signals of the PLL circuit are processed by the same voltage controlled oscillator in accordance with a signal supplied from the lock-in type second phase comparator.

摘要翻译： 光盘装置在光盘上记录数据或从其再现数据。 光盘具有多个区域，每个区域包括多个轨道，并且光盘装置基于具有不同频率的时钟信号来记录或再现关于区域的数据。 光盘装置包括第一和第二相位比较器。 第一相位比较器是一个引入型，并输出与由PLL电路产生的时钟信号和再现数据的二进制信号之间的相位差对应的信号。 第二相位比较器是锁存型，并且输出与通过对由PLL电路产生的时钟信号进行分频而获得的信号与通过对基本时钟信号进行分频而获得的信号之间的相位差相对应的信号。 当要记录数据或PLL电路输出时钟信号的时序不合适时，PLL电路的时钟信号由压控振荡器根据从引入型第一相位提供的信号进行处理 比较器。 当要再现数据时，PLL电路的时钟信号由相同的压控振荡器根据从锁定型第二相位比较器提供的信号进行处理。

公开(公告)号：US5153869A

公开(公告)日：1992-10-06

申请号：US456555

申请日：1989-12-26

申请人： Tomohisa Yoshimaru ,  Tsuneshi Yokota

发明人： Tomohisa Yoshimaru ,  Tsuneshi Yokota

IPC分类号： G11B7/013 ,  G11B19/28 ,  G11B20/10 ,  G11B20/12

CPC分类号： G11B7/24085 ,  G11B19/28 ,  G11B20/10 ,  G11B20/1258 ,  G11B2220/2537

摘要： An information recording apparatus includes a rotating section for rotating an optical disk at a constant angular velocity, the disk including a spiral recording track or concentric recording tracks, a recording section for recording information with a light beam irradiated on the recording tracks of said optical disk, the light beam having an arbitrary recording frequency, and control means for controlling the recording section such that the information is recorded on the optical disk while a pitch between adjacent record pits is elongated as a position of a recording track is moved from an innermost track toward an outermost track, the pitch at the innermost track being a first pitch, the pitch at the outermost track being a second pitch, the pitch at a track between the innermost and outermost tracks being longer than the first pitch and shorter than the second pitch, and the second pitch being shorter than a third pitch expected at the outermost track when the optical disk is rotated at the constant angular velocity and the light beam is irradiated on the disk with a constant recording frequency.

摘要翻译： 信息记录装置包括用于以恒定角速度旋转光盘的旋转部分，盘包括螺旋记录轨道或同心记录轨道，记录部分，用于利用照射在所述光盘的记录轨道上的光束来记录信息 ，具有任意记录频率的光束，以及用于控制记录部分的控制装置，使得信息被记录在光盘上，同时随着记录磁迹的位置从最内侧的轨迹移动，相邻记录凹坑之间的间距变长 朝向最外侧的轨道，最内轨道处的间距是第一间距，最外侧轨道处的间距是第二间距，最里面和最外侧轨道之间的轨道处的间距比第一间距长，并且短于第二间距 并且当光盘是旋转时，第二音调短于预期在最外侧轨道处的第三音调 以恒定的角速度进行编辑，并且以恒定的记录频率将光束照射在盘上。

公开(公告)号：US5101392A

公开(公告)日：1992-03-31

申请号：US438075

申请日：1989-11-20

申请人： Tomohisa Yoshimaru ,  Tsuneshi Yokota

发明人： Tomohisa Yoshimaru ,  Tsuneshi Yokota

IPC分类号： G11B7/004 ,  G11B19/04

CPC分类号： G11B19/04 ,  G11B7/004

摘要： Prior to emitting a light beam from an optical head, an information recording apparatus moves the optical head in the direction of the optical axis so as to render the light beam in a defocused state on an optical recording medium. Then, the size of the emitted light beam is detected by a detector.

公开(公告)号：US5249170A

公开(公告)日：1993-09-28

申请号：US486925

申请日：1990-03-01

申请人： Tomohisa Yoshimaru ,  Tsuneshi Yokota ,  Hideo Kumagai

发明人： Tomohisa Yoshimaru ,  Tsuneshi Yokota ,  Hideo Kumagai

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B20/12

CPC分类号： G11B7/0045 ,  G11B20/1258

摘要： A memory device for recording information on a recording medium includes a recording mechanism for recording information on the recording medium. A control device controls the recording mechanism such that information is recorded in a first predetermined arrangement on a first portion of the recording medium and in a second predetermined arrangement on a second portion of the recording medium.

摘要翻译： 用于在记录介质上记录信息的存储装置包括用于在记录介质上记录信息的记录机构。 控制装置控制记录机构，使得信息以记录介质的第一部分上的第一预定布置记录，并以第二预定布置记录在记录介质的第二部分上。

公开(公告)号：US5239533A

公开(公告)日：1993-08-24

申请号：US829589

申请日：1992-02-03

申请人： Tomohisa Yoshimaru ,  Tsuneshi Yokota

发明人： Tomohisa Yoshimaru ,  Tsuneshi Yokota

IPC分类号： G11B7/007 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18

CPC分类号： G11B7/00745 ,  G11B20/10 ,  G11B20/1258 ,  G11B20/1866

摘要： An information recording medium of this invention comprises a plurality of concentric tracks or a spiral track, having a plurality of recording tracks for recording information, and record pits formed on the recording tracks, said record pits being formed at a predetermined pitch on an innermost recording track, and said record pits being formed in accordance with movement of a position of a target recording track from the innermost track toward an outermost track, while gradually increasing the predetermined pitch at a rate less than that at which linear velocity increases when said information recording medium is rotated at a constant velocity.

摘要翻译： 本发明的信息记录介质包括多个同心轨道或螺旋轨迹，其具有用于记录信息的多个记录道，并且记录形成在记录轨道上的凹坑，所述记录坑在最内部记录上以预定间距形成 轨道，并且所述记录坑根据目标记录轨道的位置从最内轨道朝向最外侧轨道的移动而形成，同时以比所述信息记录时的线速度增加的速率慢的方式增加预定间距 介质以恒定速度旋转。

公开(公告)号：US5058089A

公开(公告)日：1991-10-15

申请号：US486847

申请日：1990-03-01

申请人： Tomohisa Yoshimaru ,  Tsuneshi Yokota ,  Hideo Kumagai

发明人： Tomohisa Yoshimaru ,  Tsuneshi Yokota ,  Hideo Kumagai

IPC分类号： G11B7/26 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B19/28 ,  G11B20/12 ,  G11B20/18

CPC分类号： G11B7/0079 ,  G11B20/1883 ,  G11B7/0045 ,  G11B7/005 ,  G11B2220/20

摘要： An optical disc device includes an optical head for recording/reproducing information to and from an optical disc. The optical disc has two primary recording areas. On a first recording area of the two primary areas, the optical head records information so that the linear density of information is maintained constant. On a second recording area of the two primary areas, the optical head records information so that the spacing between adjacently recorded information increases with increasing radial position of the head or the recording position is further removed from the center of the optical disc. A substitute area is allocated such that the optical head records information in this substitute area when a defective memory portion portion is detected in the first and/or the second recording area during production or recording.

摘要翻译： 光盘装置包括用于向光盘记录/再现信息的光学头。 光盘具有两个主要记录区域。 在两个主区域的第一记录区域上，光头记录信息，使得信息的线密度保持恒定。 在两个主要区域的第二记录区域上，光头记录信息，使得相邻记录的信息之间的间隔随着头部的径向位置的增加而增加，或者记录位置从光盘的中心进一步移除。 分配替代区域，使得当在生产或记录期间在第一和/或第二记录区域中检测到缺陷存储部分部分时，光头将信息记录在该替代区域中。

公开(公告)号：US5942001A

公开(公告)日：1999-08-24

申请号：US823235

申请日：1997-03-24

申请人： Koki Tanoue ,  Hideki Takahashi ,  Tomohisa Yoshimaru

发明人： Koki Tanoue ,  Hideki Takahashi ,  Tomohisa Yoshimaru

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B19/04 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B27/30 ,  H03M13/47 ,  G06F11/00

CPC分类号： H03M13/47 ,  G11B19/04 ,  G11B20/10 ,  G11B20/1426 ,  G11B20/1833 ,  G11B27/3027

摘要： Channel data obtained from a reproduced signal is input to a demodulation ROM as an address and demodulated. In the demodulated channel data, the data whose data pattern is not consistent with a 2-7 modulation method is recognized as an error data. When a resync code, given in the channel data at every 15 bytes is not detected within a predetermined time period, a resync code undetected signal is generated. The demodulated data is arranged in a matrix, and the position of the error data in the matrix and the resync code undetected generation position are specified. An error correction circuit carries out the error correction (erasure correction) by using these positions and an error correction code relating to one direction of a row or a column of the matrix.

摘要翻译： 从再现信号获得的信道数据作为地址被输入到解调ROM，并进行解调。 在解调的信道数据中，其数据模式与2-7调制方法不一致的数据被识别为错误数据。 当在预定时间段内没有检测到每15个字节的通道数据中给出的再同步码时，产生重新同步码未被检测的信号。 解调的数据被排列成矩阵，并且指定矩阵中的错误数据的位置和重新同步代码未检测的生成位置。 误差校正电路通过使用这些位置和与矩阵的行或列的一个方向相关的纠错码执行纠错（擦除校正）。