Optical bar code reader
    1.
    发明授权
    Optical bar code reader 失效
    光学条码阅读器

    公开(公告)号:US4409469A

    公开(公告)日:1983-10-11

    申请号:US226864

    申请日:1981-01-21

    IPC分类号: G06K7/10 G06K7/14

    CPC分类号: G06K7/10871

    摘要: An optical bar code reader includes a recognition system for recognizing a bar code data even when none of a plurality of scanning beams extend over the entire width of a bar code label. A plurality of incomplete data each of which represents a portion of the bar code label are combined with each other by a composition circuit to get an estimated complete bar code data. A determination system is provided for detecting whether the read out data obtained from any scanning beam corresponds to the entire bar code data. If an affirmative answer is obtained by the determination system, such read out data is directly applied to the associated processing system without activating the composition circuit.

    摘要翻译: 光学条形码读取器包括用于识别条形码数据的识别系统,即使多个扫描光束在条形码标签的整个宽度上都不延伸。 代表条形码标签的一部分的多个不完整数据通过合成电路相互组合以获得估计的完整条形码数据。 提供一种用于检测从任何扫描光束获得的读出数据对应于整个条形码数据的确定系统。 如果确定系统获得肯定的答案,则这种读出的数据被直接应用于相关联的处理系统而不激活组合电路。

    Cartridge case
    2.
    发明授权
    Cartridge case 失效
    弹壳

    公开(公告)号:US5196978A

    公开(公告)日:1993-03-23

    申请号:US48768

    申请日:1987-05-12

    IPC分类号: G11B23/03

    CPC分类号: G11B23/0308 G11B23/0302

    摘要: A cartridge case for containing a disk-shaped recording medium has a shutter attached slidably thereon. The shutter is U-shaped sectionally and the edge sections where the shutter contacts the surface of the cartridge case are rounded so that friction therebetween is reduced when the shutter slides on the surface of the cartridge case. The cartridge case is provided with a notch and an indentation on at least one of its side surfaces corresponding to protruding pieces in the device into which the cartridge case is inserted such that a sensor in the device can be activated only when a cartridge case compatible with the device is inserted and these protruding pieces properly engage with the notch and the indentation on the cartridge case.

    摘要翻译: 用于容纳盘形记录介质的盒壳具有可滑动地附接在其上的挡板。 快门是U形截面的,并且快门接触盒壳体的表面的边缘部分是圆形的,使得当快门在盒壳体的表面上滑动时,其间的摩擦力减小。 盒壳在其至少一个侧表面上的至少一个侧表面上设有凹口和凹槽,该凹槽和凹槽对应于插入盒壳体的装置中的突出件,使得只有在与盒壳体兼容的盒壳体中才能激活装置中的传感器 该装置被插入,并且这些突出部件与卡盘盒上的凹口和凹口适当接合。

    Magneto-optical disk, optical pickup, and magneto-optical disk drive

    公开(公告)号:US5740153A

    公开(公告)日:1998-04-14

    申请号:US801245

    申请日:1997-02-19

    IPC分类号: G11B11/10 G11B11/105 G11B7/24

    摘要: A magneto-optical disk including a transparent substrate, pit strings containing information formed in spiral or concentric form on a surface of the transparent substrate, a magneto-optical recording medium layer for covering the surface of the transparent substrate having the pit strings formed thereon, and magneto-optical recording areas formed by spiral or concentric flat portions between adjacent pit strings. An optical pickup for reproducing pit information and magneto-optically-recorded information from the magneto-optical disk. A magneto-optical disk drive for recording and reproducing information on the magneto-optical disk. The magneto-optical disk has a memory capacity which is twice the memory capacity of a conventional magneto-optical disk having ROM, and is accessed at high speeds.

    Recording/reproducing device
    6.
    发明授权
    Recording/reproducing device 失效
    记录/再现装置

    公开(公告)号:US5377167A

    公开(公告)日:1994-12-27

    申请号:US122172

    申请日:1993-09-17

    摘要: A recording/reproducing device for recording and reproducing on a rewritable recording medium which comprises absolute addresses, a sound information recording region for recording sound information entered thereto from outside and a TOC area for recording additional information on the sound information recorded in the sound information recording region. The device includes an optical head as well as a magnetic coil for recording silencing information or fading information in the TOC area, each of which respectively specifies that a desired range in the sound information recording region should be erased or a fade-in/fade-out operation adjacent to the recording start/end position of desired sound information should be executed in reproducing sound information in the sound information region, a TOC memory wherein the silencing information or the fading information read from the TOC area is stored when the recording medium is placed in the device, and a muting circuit which performs the silencing operation within the range specified by the silencing information stored in the TOC memory or a fading circuit which performs the fade-in/fade-out operation according to the fading information stored in the TOC memory.

    摘要翻译: 一种用于在包括绝对地址的可重写记录介质上记录和再现的记录/再现装置,用于记录从外部输入的声音信息的声音信息记录区域和用于记录记录在声音信息记录中的声音信息的附加信息的TOC区域 地区。 该装置包括光头以及用于在TOC区域中记录消音信息或衰落信息的磁线圈,其中每个分别指定声音信息记录区域中的期望范围应被擦除或淡入/淡出 - 应在声音信息区域的再现声音信息中执行与所需声音信息的记录开始/结束位置相邻的输出操作,其中当记录介质是从存储信息或从TOC区读取的衰落信息时存储的TOC存储器 放置在该设备中的静音电路,以及静音电路,其在由存储在TOC存储器中的消音信息指定的范围内进行消音操作,或者根据存储在该存储器中的衰落信息执行淡入/淡出操作的衰落电路 TOC记忆

    Digital signal reproduction apparatus for reading magneto-optical discs
    7.
    发明授权
    Digital signal reproduction apparatus for reading magneto-optical discs 失效
    用于读取磁光盘的数字信号再现装置

    公开(公告)号:US5166838A

    公开(公告)日:1992-11-24

    申请号:US498710

    申请日:1990-03-26

    IPC分类号: G11B20/10

    CPC分类号: G11B20/10009

    摘要: A digital signal reproduction apparatus includes a first differential circuit for differentiating a reproduction signal reproduced from a recording medium. This differential circuit outputs a first order differential signal. A second differential circuit differentiates the first order differential signal of the reproduction signal and outputs a second order differential signal. A comparator compares the second order differential signal with a predetermined level to produce a window signal. A peak detecting circuit detects zero-cross points in the first order differential signal and outputs a peak detecting signal. A gate gates the peak detecting signal with the window signal to output a reproduction data signal.

    摘要翻译: 数字信号再现装置包括用于区分从记录介质再现的再现信号的第一差分电路。 该差分电路输出一阶差分信号。 第二差分电路区分再现信号的一阶差分信号并输出​​二阶微分信号。 比较器将二阶差分信号与预定电平进行比较以产生窗口信号。 峰值检测电路检测一阶差分信号中的零交叉点,并输出峰值检测信号。 门通过窗口信号对峰值检测信号进行门极输出再现数据信号。

    Track counter for optical disk
    10.
    发明授权
    Track counter for optical disk 失效
    磁盘跟踪计数器

    公开(公告)号:US5001732A

    公开(公告)日:1991-03-19

    申请号:US458367

    申请日:1989-12-28

    IPC分类号: G11B7/085 G11B21/08

    CPC分类号: G11B7/08541

    摘要: The track counter for optical disk in accordance with the present invention, that counts the number of tracks a light beam passes upon when an optical head moves over an optical disk in the radial direction, comprises a passage signal generating circuit for detecting based on a reflected light of the light beam from the optical disk, that the light beam passed upon a track and for releasing a passage signal on that occasion, a counter that counts the passage signals released by the passage signal generating circuit, a count suspending circuit for forecasting that the light beam will pass upon a specific position of a track and for suspending the count by the aforementioned counter of the passage signals during this forecasted period, and a count value compensating circuit for assuming, when the count of the passage signals is suspended by the count suspending circuit, the number of tracks the light beam passed upon during that period, and for adding this assumed number to the count value of the counter. This track counter for optical disk is arranged such that it is able to count accurately the number of tracks the light beam passed upon even when the light beam passed upon the ID sections of a track, or when the passage upon a track cannot be detected because of a scratch on the surface of the disk or the like. Thereby, when the optical head moves and slides, the access speed may be enhanced.