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）。

公开(公告)号：US5025437A

公开(公告)日：1991-06-18

申请号：US306715

申请日：1989-02-06

申请人： Hiroshi Yamashita ,  Yoshiaki Tago ,  Tomohisa Yoshimaru

发明人： Hiroshi Yamashita ,  Yoshiaki Tago ,  Tomohisa Yoshimaru

IPC分类号： G11B19/20 ,  G11B19/22 ,  G11B21/22

CPC分类号： G11B19/20 ,  G11B19/22 ,  G11B21/22

摘要： An information processing system has a scanning apparatus which includes a brake mechanism for braking a turntable, on which an optical disk is mounted when the motor for rotating the turntable is stopped. A lock mechanism for preventing the optical head from moving is also activated. The lock mechanism operates in interlock with the brake mechanism when the brake mechanism is activated. The brake and lock mechanism are driven by a common drive source.

公开(公告)号：US4755980A

公开(公告)日：1988-07-05

申请号：US829954

申请日：1986-02-18

申请人： Tomohisa Yoshimaru ,  Akihiko Doi ,  Tetsuo Saito

发明人： Tomohisa Yoshimaru ,  Akihiko Doi ,  Tetsuo Saito

IPC分类号： G11B7/004 ,  G11B7/085 ,  G11B7/09 ,  G11B19/12 ,  G11B27/36 ,  G11B7/00

CPC分类号： G11B27/36 ,  G11B7/004 ,  G11B7/08547 ,  G11B7/0945 ,  G11B7/0908

摘要： In a device for recording or reproducing information by using a light beam, there is provided an optical disk comprising a base plate, a recording layer formed on the base plate, tracks provided for recording information on the recording layer, and a focus check area for checking if the light beam is focused at the optimum position on the recording layer when an optical head which generates the light beam faces the recording layer. Accordingly, it is possible to change the focus position for the recording layer of the optical disk by the objective lens of the optical head during recording and reproducing information. Also, it is possible to set it at a position where the bit error rate is smallest and has a wider margin for the shaft of the adjust position.

摘要翻译： 在通过使用光束记录或再现信息的装置中，提供了一种光盘，包括基板，形成在基板上的记录层，用于在记录层上记录信息的轨迹，以及用于 当产生光束的光学头面向记录层时，检查光束是否聚焦在记录层上的最佳位置。 因此，可以在记录和再现信息期间通过光头的物镜改变光盘的记录层的聚焦位置。 此外，可以将其设置在误码率最小的位置，并且具有用于调节位置的轴的较宽的边缘。

公开(公告)号：US4500926A

公开(公告)日：1985-02-19

申请号：US388504

申请日：1982-06-14

申请人： Tomohisa Yoshimaru

发明人： Tomohisa Yoshimaru

IPC分类号： G06F11/10 ,  G06T1/00 ,  H04N1/21 ,  H04N1/419 ,  H04N7/12

CPC分类号： H04N1/419

摘要： A data recording apparatus has an optical scanner for optically scanning a document and for outputting an image signal corresponding to the document pattern, a modified Huffman coding circuit for compressing the image information output by the optical scanner for each scanning line, and a page buffer memory for storing the image signal compressed by the modified Huffman coding circuit as line image information items. The line image information items are read out from the page buffer memory in units of a fixed number of bits, and are divided into image data pieces of a fixed bit length. Dummy data is added to the terminal end image data which does not have the fixed bit length, thus forming a terminal end image data of the fixed bit length. Error correction data is set for each image data piece.

摘要翻译： 数据记录装置具有用于光学扫描文件并输出与文档图案相对应的图像信号的光学扫描器，用于压缩由每个扫描线由光学扫描器输出的图像信息的修改的霍夫曼编码电路和页缓冲存储器 用于将由修改的霍夫曼编码电路压缩的图像信号存储为线图像信息项。 行图像信息项以固定位数为单位从页缓冲存储器中读出，并被分割为固定位长度的图像数据段。 将虚拟数据添加到不具有固定位长度的终端图像数据，从而形成固定位长度的终端图像数据。 针对每个图像数据片段设置错误校正数据。

公开(公告)号：US08622497B2

公开(公告)日：2014-01-07

申请号：US13220484

申请日：2011-08-29

申请人： Teruyuki Hiyoshi ,  Noboru Nitta ,  Mamoru Kimura ,  Tomohisa Yoshimaru

发明人： Teruyuki Hiyoshi ,  Noboru Nitta ,  Mamoru Kimura ,  Tomohisa Yoshimaru

IPC分类号： B41J29/38 ,  B41J2/045

CPC分类号： B41J2/04548 ,  B41J2/04541 ,  B41J2/0455 ,  B41J2/04573 ,  B41J2/04581

摘要： According to one embodiment, a direct current voltage which has positive and negative potentials relative to a ground potential interposed therebetween is used as a drive voltage for electric charging/discharging to/from an actuator.

摘要翻译： 根据一个实施例，使用相对于插入其间的接地电位具有正和负电位的直流电压作为用于对/从致动器进行充电/放电的驱动电压。

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：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：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：US4439797A

公开(公告)日：1984-03-27

申请号：US188099

申请日：1980-09-17

申请人： Tomohisa Yoshimaru ,  Mitsuo Yamashita ,  Junichi Daigo

发明人： Tomohisa Yoshimaru ,  Mitsuo Yamashita ,  Junichi Daigo

IPC分类号： G11B27/28 ,  G06K17/00 ,  G11B5/008 ,  G11B5/54 ,  G11B15/00 ,  G11B27/00 ,  G11B27/24 ,  G11B27/32 ,  G11B5/78 ,  G11B23/14

CPC分类号： G11B15/005 ,  G06K17/0019 ,  G11B27/24 ,  G11B27/328 ,  G11B5/00817 ,  G11B5/54

摘要： A recording and reproducing system which uses a recording medium having a plurality of information recording tracks for recording image information. And at least one index recording track is located on the recording medium for recording index information. The index recording track is located substantially at the center of the recording medium and extends length wise of the recording medium in the direction of movement of this recording medium. Accordingly, the recording medium of the present invention eliminates the adverse effect of the drop-out and reduces the period of time required to search for the index information and reproduce image information.

摘要翻译： 一种记录和再现系统，其使用具有用于记录图像信息的多个信息记录轨道的记录介质。 并且至少一个索引记录磁道位于用于记录索引信息的记录介质上。 索引记录磁道基本上位于记录介质的中心，并且在该记录介质的移动方向上延伸至记录介质的长度方向。 因此，本发明的记录介质消除了辍学的不利影响，并减少了搜索索引信息和再现图像信息所需的时间。