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290 条记录 (耗时 0.029 秒)

    Cross talk removing device utilizing signal from main track to subtract amplitude adjusted signals from adjacent tracks
    92.
    发明授权
    Cross talk removing device utilizing signal from main track to subtract amplitude adjusted signals from adjacent tracks 失效
    使用来自主轨道的信号的串扰去除装置从相邻轨道减去振幅调整的信号

    公开(公告)号：US5729514A

    公开(公告)日：1998-03-17

    申请号：US764861

    申请日：1996-12-13

    申请人： Toshihiro Horigome ,  Seiji Kobayashi

    发明人： Toshihiro Horigome ,  Seiji Kobayashi

    IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/005 ,  G11B20/22

    CPC分类号： G11B20/22 ,  G11B7/005

    摘要： A device for removing a crosstalk component mingled from an adjacent track to a target track from a reproduction signal of the target track is provided for automatically adjusting a coefficient on which the amplitude of the reproduction signal of the adjacent track is adjusted for generating a crosstalk component signal. A crosstalk component signal generating unit 20 operates to generate a crosstalk component signal 20E or 20F by adjusting an amplitude of a signal 21a or 22a having a suppressed high frequency component of each reproduction signal ERF or FRF of the adjacent track with respect to the coefficient KE or KF. A subtracting unit 30 operates to output subtract the crosstalk component signal 20E or 20F from a main reproduction signal MRF for outputing a crosstalk-removed signal 8a. A correlation operating unit 42 or 52 included in the coefficient setting unit 40 or 50 operates to derive a correlation between the crosstalk-removed signal 8a and the signal 21a or 22a having the suppressed high frequency component. A coefficient increasing or decreasing unit 43 or 53 operates to increase the coefficient KE or KF if the correlation is positive or decrease the coefficient KE or KF if the correlation is negative.

    摘要翻译： 提供了用于从目标轨道的再现信号中去除从相邻轨道混合到目标轨道的串扰分量的装置，用于自动调整相邻轨道的再现信号的幅度被调整以产生串扰分量的系数 信号。 串扰分量信号生成单元20通过相对于系数KE调整相邻轨道的每个再现信号ERF或FRF的具有抑制的高频分量的抑制信号21a或22a的幅度来操作以产生串扰分量信号20E或20F 或KF。 减法单元30进行运算，以从主再现信号MRF输出串扰分量信号20E或20F，以输出除串扰信号8a。 包括在系数设定单元40或50中的相关运算单元42或52用于导出除去串扰的信号8a与具有抑制的高频分量的信号21a或22a之间的相关性。 如果相关性为正，则系数增减单元43或53用于增加系数KE或KF，如果相关性为负，则系数KE或KF降低。

    Information recording apparatus employing pit edge shifting wherein an error correcting circuit generates an error correction code which is added at part of bits of a predetermined plurality of bits constituting a unit of digital information
    94.
    发明授权
    Information recording apparatus employing pit edge shifting wherein an error correcting circuit generates an error correction code which is added at part of bits of a predetermined plurality of bits constituting a unit of digital information 失效
    采用凹坑边缘移位的信息记录装置，其中误差校正电路产生纠错码，该纠错码在构成数字信息单位的预定多个位的位的一部分处相加

    公开(公告)号：US5699337A

    公开(公告)日：1997-12-16

    申请号：US588600

    申请日：1996-01-18

    申请人： Seiji Kobayashi

    发明人： Seiji Kobayashi

    IPC分类号： G11B7/24 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18

    CPC分类号： G11B20/1833 ,  G11B20/1866 ,  G11B20/10194 ,  G11B7/0045

    摘要： The invention provides information recording apparatus, information reproducing apparatus, and information recording medium, capable of correcting an error due to the change in RF signal level caused by noise or the like without a significant reduction in the storage capacity. An edge modulating circuit generates a signal corresponding to digital information consisting of units each consisting of a predetermined plurality of bits. Pits are formed on in information recording medium in such a manner that the edge positions of the pits are shifted in a discrete fashion according to the signal output from the edge modulating circuit. An error correcting circuit generates an error correction code. The resultant error correction code is added at part of bits of the predetermined plurality of bits.

    摘要翻译： 本发明提供信息记录装置，信息再现装置和信息记录介质，其能够校正由噪声等引起的RF信号电平的变化引起的误差，而不会显着降低存储容量。 边缘调制电路产生对应于由每个由预定的多个比特组成的单元组成的数字信息的信号。 凹坑在信息记录介质中形成，使得凹坑的边缘位置根据从边缘调制电路输出的信号以离散方式移位。 纠错电路产生纠错码。 所得到的纠错码在预定的多个位的位的一部分被相加。

    Information recording apparatus and process for recording on a recording medium with pit edges shifted in a step-wise fashion
    96.
    发明授权
    Information recording apparatus and process for recording on a recording medium with pit edges shifted in a step-wise fashion 失效
    信息记录装置和用于在具有逐步移位的凹坑边缘的记录介质上记录的处理

    公开(公告)号：US5615193A

    公开(公告)日：1997-03-25

    申请号：US456115

    申请日：1995-05-31

    申请人： Seiji Kobayashi ,  Hiroshige Okamura ,  Hisayuki Yamatsu

    发明人： Seiji Kobayashi ,  Hiroshige Okamura ,  Hisayuki Yamatsu

    IPC分类号： G11B7/0045 ,  G11B7/005 ,  G11B7/013 ,  G11B7/09 ,  G11B20/10 ,  G11B7/00

    CPC分类号： G11B20/10212 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10037 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/24085 ,  G11B7/24088 ,  G11B7/0903

    摘要： In an information recording medium from which information recorded on each pit is reproduced by an optical detection system that obtains a reproduced signal corresponding to each pit by scanning the information recording medium along pit rows by a light beam, data of high recording density can be accurately reproduced by a simple arrangement by shifting in a step-wise fashion edge positions of an information pit from a predetermined reference position in response to digital information to be recorded within a range corresponding to a predetermined shift period smaller than a transition period of a reproduced signal determined in response to a transfer characteristic of the optical detection system. Therefore, a nonlinear intersymbol interference can be reduced without emphasizing a noise component.

    摘要翻译： 在通过光学检测系统再现记录在每个凹坑上的信息的信息记录介质中，通过用光束沿凹坑行扫描信息记录介质来获得与每个凹坑相对应的再现信号，可以准确地记录高记录密度的数据 通过简单的布置再现，以便响应于要记录在与再现信号的转换周期小的预定移位周期相对应的范围内的数字信息，从信息凹坑的逐步方式边缘位置移位到预定参考位置 根据光学检测系统的传送特性确定。 因此，可以在不强调噪声分量的情况下减少非线性码间干扰。

    Neural network quantizer
    97.
    发明授权
    Neural network quantizer 失效
    神经网络量化器

    公开(公告)号：US5157399A

    公开(公告)日：1992-10-20

    申请号：US744115

    申请日：1991-08-15

    申请人： Seiji Kobayashi ,  Demetri Psaltis

    发明人： Seiji Kobayashi ,  Demetri Psaltis

    IPC分类号： G06F15/18 ,  G06G7/60 ,  G06N3/04 ,  G06N99/00 ,  H03M1/08 ,  H03M1/12 ,  H03M1/36 ,  H03M1/42

    CPC分类号： H03M1/42

    摘要： A neural network quantizer for quantizing input analog signals includes a plurality of multi-level neurons. The input analog signals are sampled and supplied to respective ones of the multi-level neurons. Output values of the multi-level neurons are converted into analog values, weighted by weighting coefficients determined in accordance with a frequency band of at least one frequency component of the input analog signals and fed back to the respective one of the multi-level neurons and to the other multi-level neurons. The weighted analog values fed back are compared with the respective ones of the sampled input analog signals. The output values of the multi-level neurons are corrected in response to the compared results, and when the compared results are converged within a predetermined range, the output values of the multi-level neurons are produced to quantize the input analog signals.

    Optical disk apparatus and method for controlling movement of light spot thereof
    98.
    发明授权
    Optical disk apparatus and method for controlling movement of light spot thereof 失效
    光盘设备及其控制方法

    公开(公告)号：US5144605A

    公开(公告)日：1992-09-01

    申请号：US449933

    申请日：1989-12-18

    申请人： Seiji Kobayashi ,  Norio Nishida ,  Naoya Eguchi ,  Shunji Yoshimura

    发明人： Seiji Kobayashi ,  Norio Nishida ,  Naoya Eguchi ,  Shunji Yoshimura

    IPC分类号： G11B21/08 ,  G11B7/007 ,  G11B7/085 ,  G11B21/10

    CPC分类号： G11B7/08505

    摘要： The method of the present invention comprises detecting a recording pattern, which is different for each tract, in each of track groups consisting of a predetermined number N or tracks recorded in advance on an optical disk(1), generating a tracking signal S.sub.ET whose signal level changes on the positive and negative sides of a target track T.sub.0 as the center, and moving the optical spot to the target track T.sub.0 on the basis of this tracking signal S.sub.ET. In this manner, it becomes possible to prevent uncontrollable movement of the optical spot and align the optical spot to a desired recording track within a short period of time.

    摘要翻译： PCT No.PCT / JP89 / 00414 Sec。 371日期1989年12月18日 102（e）1989年12月18日PCT PCT 1989年4月18日PCT。 第WO89 / 10614号公报 日本公报1989年11月2日。本发明的方法包括检测在由光盘（1）上预先记录的预定数量N或轨迹组成的每个轨道组中的每条道路不同的记录模式， 产生其目标轨道T0的正负侧的信号电平变化为中心的跟踪信号SET，并且基于该跟踪信号SET将光点移动到目标轨道T0。 以这种方式，可以防止光点的不可控制的移动并且在短时间内将光点对准所需的记录轨道。

    Holographic information storage system
    99.
    发明授权
    Holographic information storage system 失效
    全景信息存储系统

    公开(公告)号：US5111445A

    公开(公告)日：1992-05-05

    申请号：US438576

    申请日：1989-11-17

    申请人： Demetri Psaltis ,  Alan Yamamura ,  Seiji Kobayashi

    发明人： Demetri Psaltis ,  Alan Yamamura ,  Seiji Kobayashi

    IPC分类号： G03H1/16 ,  G03H1/22 ,  G11B7/00 ,  G11B7/0065 ,  G11B7/13

    CPC分类号： G11B7/131 ,  G11B7/0065

    摘要： An optical system for reading a plurality of radially contiguous individual holograms previously recorded on a rotatable disk along at least one of the disk tracks, each hologram being representative of a predetermined data pattern, and each being recorded as a Fourier transform hologram with respect tot the direction (y direction) tangential to the tracks and as a Fresnel hologram with respect to the radial direction (x direction), and wherein the optical system illuminates the disk with a read-out beam which is at least partially reflected by the disk to an array of photosensitive detectors which generates electrical data signals. A latch circuit is included for recovering the value of each data signal when the read-out beam completely illuminates one of the holograms.

    摘要翻译： 一种光学系统，用于读取沿着至少一个盘轨迹先前记录在可旋转盘上的多个径向相邻的单独全息图，每个全息图表示预定数据图案，并且每个全息图相对于 方向（y方向），并且相对于径向方向（x方向）为菲涅尔全息图，并且其中光学系统用至少部分地由盘反射的读出光束照射盘， 产生电数据信号的光敏检测器阵列。 包括一个锁存电路，用于在读出光束完全照亮其中一个全息图时恢复每个数据信号的值。

    Optical disc access control system that counts tracks using tracking control signal
    100.
    发明授权
    Optical disc access control system that counts tracks using tracking control signal 失效
    使用跟踪控制信号对磁道进行计数的光盘访问控制系统

    公开(公告)号：US5023855A

    公开(公告)日：1991-06-11

    申请号：US170352

    申请日：1988-03-18

    申请人： Seiji Kobayashi ,  Kiyoshi Ohsato

    发明人： Seiji Kobayashi ,  Kiyoshi Ohsato

    IPC分类号： G11B7/085

    CPC分类号： G11B7/08541

    摘要： An apparatus for counting a number of record tracks which an optical head traverses on a basis of a periodical track transverse information INF.sub.TR representing the traverse of the head across the record tracks. The periodical track transverse information INF.sub.TR is derived by sampling information on the record tracks performed discretely on record tracks TR. In the tracks counting apparatus, a tracking signal generating circuit is installed for generating tracking signals V.sub.OP and V.sub.OQ which vary their frequencies and phases so as to follow those of the track transverse information INF.sub.TR. The number of record tracks which the optical head has traversed are counted on the basis of the tracking signals V.sub.OP and V.sub.OQ. The tracking signals V.sub.OP and V.sub.OQ have continuous waveforms so that the number of tracks can accurately be counted even if the only discrete information is derived as the track transverse information INF.sub.TR.