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公开(公告)号：US5942001A
公开(公告)日：1999-08-24
申请号：US823235
申请日：1997-03-24
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）。
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2.发明授权Information recording/reproducing apparatus for recording or reproducing data, and clock generating circuit incorporated therein 失效用于记录或再现数据的信息记录/再现装置，以及并入其中的时钟发生电路
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。
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公开(公告)号：US5359585A
公开(公告)日：1994-10-25
申请号：US953157
申请日：1992-09-29
申请人： Koki Tanoue , Tomohisa Yoshimaru , Sueo Ueno
发明人： Koki Tanoue , Tomohisa Yoshimaru , Sueo Ueno
CPC分类号： G11B20/10222 , G11B20/10009 , G11B20/1403 , G11B27/3027 , G11B7/005
摘要： The present invention aims at preventing erroneous data reproduction even when the amplitude center of a signal of a data part read out from an optical disc is displaced. An information reproducing apparatus comprises read means for reading data stored in each of block units on an optical disc and outputting a read signal, digitizing means for digitizing the read signal by using a slice level, generating means for comparing the signal digitized by the digitizing means and clock signals output at predetermined intervals, thereby generating a charge width signal representing a phase difference between the digitized signal and the clock signals, while the data stored in a data storing portion of the block unit is read by the read means, and changing means for changing the slice level of the digitizing means on the basis of the charge width signal generated by the generating means.
摘要翻译： 本发明的目的在于防止从光盘读出的数据部分的信号的振幅中心位移时的错误数据再现。 一种信息再现装置，包括读取装置，用于读取存储在光盘上的块单元中的数据并输出读取信号;数字化装置，用于通过使用限幅电平数字化读取信号;生成装置，用于将由数字化装置 并且以预定间隔输出时钟信号，由此产生表示数字化信号和时钟信号之间的相位差的电荷宽度信号，同时存储在块单元的数据存储部分中的数据由读取装置读取;以及改变装置 用于根据由发生装置产生的充电宽度信号来改变数字化装置的限幅电平。
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4.发明授权Interlocking braking and lock mechanisms for scanning apparatus of an information processing system 失效用于信息处理系统的扫描装置的联锁制动和锁定机构
公开(公告)号：US5025437A
公开(公告)日：1991-06-18
申请号：US306715
申请日：1989-02-06
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.
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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
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。
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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
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。
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7.发明授权公开(公告)号：US08622497B2
公开(公告)日：2014-01-07
申请号：US13220484
申请日：2011-08-29
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。
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8.发明授权Information recording/reproducing apparatus for recording and reproducing information in accordance with mark interval recording scheme or mark length recording scheme 失效用于根据标记间隔记录方案或标记长度记录方案记录和再现信息的信息记录/再现装置
公开(公告)号：US5452279A
公开(公告)日：1995-09-19
申请号：US34424
申请日：1993-03-19
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。
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9.发明授权Information recording/reproducing apparatus for recording information in accordance with mark interval or mark length recording scheme, and for reproducing information recorded in accordance with mark interval or mark length recording scheme 失效用于根据标记间隔或标记长度记录方案记录信息的信息记录/再现装置，以及用于再现根据标记间隔或标记长度记录方案记录的信息
公开(公告)号：US5410522A
公开(公告)日：1995-04-25
申请号：US25776
申请日：1993-03-03
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。
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公开(公告)号：US5249170A
公开(公告)日：1993-09-28
申请号：US486925
申请日：1990-03-01
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。
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