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32 条记录 (耗时 0.022 秒)

    Method and arrangement for recording/reproducing compressed program information on a recording medium containing a plurality of programs
    3.
    发明授权
    Method and arrangement for recording/reproducing compressed program information on a recording medium containing a plurality of programs 失效
    在包含多个节目的记录介质上记录/再现压缩节目信息的方法和装置

    公开(公告)号：US5555229A

    公开(公告)日：1996-09-10

    申请号：US271492

    申请日：1994-07-07

    申请人： Kunio Kojima ,  Shigemi Maeda ,  Jun Akiyama

    发明人： Kunio Kojima ,  Shigemi Maeda ,  Jun Akiyama

    IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B11/10 ,  G11B11/105 ,  G11B20/00 ,  G11B20/10 ,  G11B27/10 ,  G11B27/11 ,  G11B5/09

    CPC分类号： G11B27/105 ,  G11B20/00007 ,  G11B27/11 ,  G11B2220/2529 ,  G11B2220/65

    摘要： Pieces of leading compressed information, each of which corresponds to a predetermined number of blocks of each of a plurality of programs recorded on an optical disk, are successively read therefrom, and stored in a buffer memory in a compressed state as they are. Upon reproducing a certain program, the corresponding leading compressed information is read from the buffer memory, and reproduced after having been subjected to a decompressing process in an information-decompression processing circuit. The program is continuously reproduced by reading compressed information corresponding to the predetermined number of blocks following the leading compressed information from the optical disk and supplying the compressed information to the buffer memory. With this arrangement, it is possible to eliminate a slow switching operation in the case when programs are switched to start reproducing a different program.

    摘要翻译： 它们中的每一个对应于记录在光盘上的多个程序中的每一个的预定数量的块的先导压缩信息的片段被连续地读取，并且按原样存储在缓冲存储器中。 在再现某个程序时，从缓冲存储器中读取对应的前导压缩信息，并且在信息解压缩处理电路中经过解压缩处理之后被再现。 通过读取与来自光盘的引导压缩信息之后的预定数量的块相对应的压缩信息并将压缩信息提供给缓冲存储器来连续再现程序。 通过这种布置，在程序切换开始再现不同的程序的情况下，可以消除缓慢的切换操作。

    Data recording/reproducing apparatus with alternating access of compressed works
    4.
    发明授权
    Data recording/reproducing apparatus with alternating access of compressed works 失效
    数据记录/再现装置，具有压缩工作的交替访问

    公开(公告)号：US5457667A

    公开(公告)日：1995-10-10

    申请号：US7276

    申请日：1993-01-21

    申请人： Kunio Kojima ,  Shigemi Maeda ,  Jun Akiyama

    发明人： Kunio Kojima ,  Shigemi Maeda ,  Jun Akiyama

    IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B20/00 ,  G11B20/10 ,  G11B27/10 ,  G11B27/11 ,  G11B27/19 ,  G11B27/24 ,  G11B27/32

    CPC分类号： G11B27/24 ,  G11B20/00007 ,  G11B20/10 ,  G11B27/105 ,  G11B27/11 ,  G11B27/329 ,  G11B2020/10592 ,  G11B2020/10953 ,  G11B2220/216 ,  G11B2220/2525 ,  G11B2220/2529 ,  G11B2220/2545 ,  G11B2220/65

    摘要： A data recording and reproducing apparatus uses a rewriteable optical disk with pre-recorded absolute address information, and comprises a data compression circuit for dividing and compressing continuous digital data into compressed plural data blocks, an expansion circuit to restore the compressed data to the original expanded form, and a buffer memory. Data is compressed in discrete data blocks and is recorded sequentially block by block to the optical disk. The compressed data is likewise read block by block from the disk during data reproduction. Using the data expansion circuit to expand the compressed data one block at a time, the data recording and reproducing apparatus can reproduce the original continuous digital data stream. Plural continuous digital data selections can thus be reproduced by alternately fetching data for the plural selections from the disk in compressed data block units and temporarily storing the data to a buffer memory for expansion.

    摘要翻译： 数据记录和再现装置使用具有预先记录的绝对地址信息的可重写光盘，并且包括用于将连续数字数据分割和压缩成压缩的多个数据块的数据压缩电路，扩展电路，以将压缩数据恢复到原始扩展 表单和缓冲存储器。 数据在离散数据块中被压缩，并逐个逐块地记录到光盘。 在数据再现期间，压缩数据同样从盘读取。 数据记录和重放装置可以使用数据扩展电路一次一个地扩展压缩数据，再现原始的连续数字数据流。 因此可以通过以压缩数据块单位交替地从盘中取出多个选择的数据来再现多个连续的数字数据选择，并将数据临时存储到缓冲存储器进行扩展。

    Information recording and reproducing device providing faster access time to a recording medium
    5.
    发明授权
    Information recording and reproducing device providing faster access time to a recording medium 失效
    信息记录和再现装置提供对记录介质的更快的访问时间

    公开(公告)号：US5315571A

    公开(公告)日：1994-05-24

    申请号：US100077

    申请日：1993-07-29

    申请人： Shigemi Maeda ,  Kunio Kojima ,  Jun Akiyama ,  Shigeo Terashima ,  Tomiyuki Numata

    发明人： Shigemi Maeda ,  Kunio Kojima ,  Jun Akiyama ,  Shigeo Terashima ,  Tomiyuki Numata

    IPC分类号： G11B7/004 ,  G11B7/085 ,  G11B11/105 ,  G11B19/12 ,  G11B19/24 ,  G11B20/10 ,  G11B20/14 ,  G11B21/08 ,  G11B27/32 ,  G11B7/00

    CPC分类号： G11B20/10 ,  G11B11/10504 ,  G11B11/10515 ,  G11B11/10563 ,  G11B19/12 ,  G11B19/24 ,  G11B20/1403 ,  G11B21/085 ,  G11B27/327 ,  G11B7/004 ,  G11B7/08505 ,  G11B2020/1087 ,  G11B2020/10888 ,  G11B2220/20 ,  G11B2220/2525

    摘要： An information recording and reproducing device has a first recording clock generation circuit which generates a clock based on pre-recorded information on a magneto-optical disk, a second recording clock generation circuit and a switching circuit The switching circuit selects a first recording clock when recording information is of discrete information and selects a second recording clock when recording information is of successive information. Moreover, in the present device, a first reading clock is used as well as a second clock as a clock for reading out the reproduced data from the magneto-optical disk, which had been once stored in memory. The second reading clock having a reference frequency is generated by a second clock generation circuit and is used for reading out successive information such as music information. The first reading clock in synchronization with the reproduced signal is generated by a first reading clock generation circuit and is used for reading out discrete information such as computer-use data. In addition, in the case of discrete information, it is possible to start recording/reproducing operation immediately after an optical head reaches a desired position, thereby permitting to shorten an access time.

    摘要翻译： 信息记录和再现装置具有第一记录时钟产生电路，其基于磁光盘上的预先记录的信息产生时钟，第二记录时钟产生电路和切换电路。切换电路在记录时选择第一记录时钟 信息是离散信息，并且当记录信息是连续信息时选择第二记录时钟。 此外，在本装置中，使用第一读取时钟以及第二时钟作为用于从已经存储在存储器中的磁光盘读出再现数据的时钟。 具有参考频率的第二读取时钟由第二时钟产生电路产生，并且用于读出诸如音乐信息的连续信息。 与再现信号同步的第一读取时钟由第一读取时钟生成电路产生，并且用于读出诸如计算机使用数据的离散信息。 此外，在离散信息的情况下，可以在光头到达期望位置之后立即开始记录/再现操作，从而允许缩短访问时间。

    Reproducing light quantity control method for optical memory device, and reproducing light quantity control device, and optical recording medium
    7.
    发明授权
    Reproducing light quantity control method for optical memory device, and reproducing light quantity control device, and optical recording medium 失效
    再现光存储装置的光量控制方法，再现光量控制装置和光记录介质

    公开(公告)号：US06392970B1

    公开(公告)日：2002-05-21

    申请号：US09129191

    申请日：1998-07-23

    申请人： Hiroshi Fuji ,  Shigemi Maeda ,  Tomoyuki Miyake ,  Yasuo Nakata ,  Nobuo Ogata ,  Jun Akiyama ,  Toshiharu Inui ,  Yoshihiro Sekimoto ,  Hideaki Sato

    发明人： Hiroshi Fuji ,  Shigemi Maeda ,  Tomoyuki Miyake ,  Yasuo Nakata ,  Nobuo Ogata ,  Jun Akiyama ,  Toshiharu Inui ,  Yoshihiro Sekimoto ,  Hideaki Sato

    IPC分类号： G11B509

    CPC分类号： G11B7/126 ,  G11B7/005 ,  G11B7/00745 ,  G11B11/10515 ,  G11B11/10584 ,  G11B11/10595

    摘要： A reproducing light quantity control method for an optical memory device includes the steps of (1) recording test data on an optical recording medium; (2) reproducing the test data recorded on the optical recording medium by changing a reproducing light quantity in a plurality of light quantity values; (3) measuring a quality value and a signal quantity of each of a plurality of reproducing signals from the test data; (4) selecting an optimum reproducing signal quantity from a plurality of reproducing signal quantities in accordance with quality values of the plurality of reproducing signals so as to decide a target value of reproducing signal quantity; and (5) recording the target value on a target value recording region of the optical recording medium. This method reduces the time required to obtain a target value of a reproducing signal quantity and speeds up an operation from installing of the optical recording medium to finishing of preparation for recording and reproducing.

    摘要翻译： 一种用于光学存储器件的再现光量控制方法包括以下步骤：（1）将测试数据记录在光学记录介质上; （2）通过改变多个光量值中的再现光量来再现记录在光记录介质上的测试数据; （3）从测试数据测量多个再现信号中的每一个的质量值和信号量; （4）根据多个再现信号的质量值从多个再现信号量中选择最佳再现信号量，以便确定再现信号量的目标值; 和（5）将目标值记录在光学记录介质的目标值记录区上。 该方法减少了获得再现信号量的目标值所需的时间，并且加快了从安装光学记录介质到完成记录和再现准备的操作。

    Multiple coil magnetic head for magnetic optical recording device
    9.
    发明授权
    Multiple coil magnetic head for magnetic optical recording device 失效
    多磁盘磁头用于磁光记录装置

    公开(公告)号：US5500839A

    公开(公告)日：1996-03-19

    申请号：US362135

    申请日：1994-12-22

    申请人： Tomoyuki Miyake ,  Toshiharu Inui ,  Jun Akiyama ,  Kunio Kojima

    发明人： Tomoyuki Miyake ,  Toshiharu Inui ,  Jun Akiyama ,  Kunio Kojima

    IPC分类号： G11B11/10 ,  G11B5/02 ,  G11B11/105 ,  G11B11/00

    CPC分类号： G11B11/10508 ,  G11B11/10536 ,  G11B11/10552

    摘要： A magneto-optical recording and reproducing apparatus includes a magnetic head for modulating a magnetic field according to a recording signal. There are three separate coils around a single magnetic core the magnetic head. Three coil driving circuits are included, each one associated with a separate coil for switching the direction of magnetic field generated by said separate coils. A selecting circuit is used for starting or stopping the transmission of the recording signal to the coil driving circuits.

    摘要翻译： 磁光记录和再现装置包括用于根据记录信号调制磁场的磁头。 在单个磁芯周围有三个单独的线圈磁头。 包括三个线圈驱动电路，每个线圈驱动电路与用于切换由所述单独线圈产生的磁场方向的单独线圈相关联。 选择电路用于启动或停止向线圈驱动电路传输记录信号。