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28 条记录 (耗时 0.019 秒)

    Error correction method using Reed-Solomon code
    5.
    发明授权
    Error correction method using Reed-Solomon code 失效
    使用Reed-Solomon码的纠错方法

    公开(公告)号：US4852099A

    公开(公告)日：1989-07-25

    申请号：US151624

    申请日：1988-02-02

    申请人： Shinya Ozaki

    发明人： Shinya Ozaki

    IPC分类号： H03M13/29 ,  H03M13/15 ,  H03M13/27

    CPC分类号： H03M13/15

    摘要： In an error correction method using Reed-Solomon code when the error correction is performed by using the result of the multiplication of a syndrome and an error location, another syndrome is added to thereby form a new syndrome. By repetitively executing this procedure, the error vector is obtained by a small number of arithmetic operations relative to a known procedure, thereby performing error correction by the so-called erasure correction technique. Then, by calculating another error vector using the first calculated error vector, the number of arithmetic operation times can be even further reduced.

    Encoding method for error correction
    6.
    发明授权
    Encoding method for error correction 失效
    纠错编码方法

    公开(公告)号：US4630272A

    公开(公告)日：1986-12-16

    申请号：US604537

    申请日：1984-04-27

    申请人： Tadashi Fukami ,  Kentaro Odaka ,  Shinya Ozaki

    发明人： Tadashi Fukami ,  Kentaro Odaka ,  Shinya Ozaki

    IPC分类号： G06F11/10 ,  G11B20/18 ,  H03M13/00 ,  H03M13/27

    CPC分类号： G11B20/1809

    摘要： An encoding method for error correction of digital information data is provided. The encoding method comprises the steps of arranging the digital information data in a plurality of blocks each including a plurality of symbols, and generating first redundacy data from first respective groups of digital information data constituting symbols which exist in at least two blocks in a first direction. Second redundancy data is generated from second respective groups of digital information data constituting symbols which are included in the plurality of blocks in a second direction. First code sequences are formed for first error detection from the first digital information data groups and the first redundancy data, and second code sequences are formed for second error detection from the second digital information data group and the second redundancy code. Blocks including at least one of the digital information data and the first redundancy data are transmitted, and blocks including the second redundancy data are also transmitted.

    摘要翻译： 提供了一种用于数字信息数据的纠错的编码方法。 编码方法包括以下步骤：将数字信息数据排列在多个块中，每个块包括多个符号，并且从构成符号的第一组数字信息数据生成第一冗余数据，所述数字信息数据存在于至少两个块中的第一方向 。 从在第二方向上包括在多个块中的构成符号的第二组数字信息数据生成第二冗余数据。 形成第一代码序列用于来自第一数字信息数据组和第一冗余数据的第一错误检测，并且形成第二代码序列用于来自第二数字信息数据组和第二冗余码的第二错误检测。 发送包括数字信息数据和第一冗余数据中的至少一个的块，并且还发送包括第二冗余数据的块。

    Data recorder and method of operation
    8.
    发明授权
    Data recorder and method of operation 失效
    数据记录仪及操作方法

    公开(公告)号：US5144501A

    公开(公告)日：1992-09-01

    申请号：US745991

    申请日：1991-08-08

    申请人： Yoshizumi Inazawa ,  Shinya Ozaki ,  Brian Milthorp ,  Bruce Thompson

    发明人： Yoshizumi Inazawa ,  Shinya Ozaki ,  Brian Milthorp ,  Bruce Thompson

    IPC分类号： G11B20/10 ,  G11B20/12 ,  G11B27/30

    CPC分类号： G11B20/10 ,  G11B20/1209 ,  G11B27/3063 ,  G11B20/1211 ,  G11B2220/90 ,  G11B2220/913

    摘要： In this invention, a predetermined amount of data is given as one frame, and data having a predetermined format is recorded for each frame. A first area recording main data and a second area recording sub data are formed in each frame. Plural types of units each consisting of a plurality of frames are set, and a number of first units from a leading end of a recording medium and the numbers of other units from the leading end of the recording medium to a trailing end of the first units are recorded in the second area of a frame constituting the unit including the trailing end, thus facilitating a high-speed search operation.

    摘要翻译： 在本发明中，作为一帧给出预定数量的数据，并且每帧记录具有预定格式的数据。 在每个帧中形成记录主数据和第二区记录子数据的第一区。 设置由多个帧组成的多种类型的单元，以及来自记录介质的前端的多个第一单元和从记录介质的前端到第一单元的后端的其它单元的数量 被记录在构成包括尾端的单元的帧的第二区域中，从而便于高速搜索操作。

    Method and apparatus for reproducing multiply recorded data
    9.
    发明授权
    Method and apparatus for reproducing multiply recorded data 失效
    用于再现多重记录数据的方法和装置

    公开(公告)号：US5144500A

    公开(公告)日：1992-09-01

    申请号：US728304

    申请日：1991-07-05

    申请人： Kentaro Odaka ,  Shinya Ozaki ,  Brian Milthorp

    发明人： Kentaro Odaka ,  Shinya Ozaki ,  Brian Milthorp

    IPC分类号： G11B20/12 ,  G11B20/18 ,  G11B27/30

    CPC分类号： G11B20/1803 ,  G11B20/1209 ,  G11B27/3027 ,  G11B27/3063 ,  G11B20/1211 ,  G11B2220/90 ,  G11B2220/913

    摘要： A digital audio tape recorder is used as a digital data storage recorder and digital signals containing main data and sub-data are recorded in separate areas in each track of a plurality of tracks formed on a recording medium, wherein a predetermined number of tracks constitute a group and a plurality of groups are recorded on the medium. In the sub-area an identification signal is further recorded which indicates whether or not main data recorded in the main areas of a given group is same as the main data recorded in the main areas of preceding and subsequent adjacent groups. When identical data is multiply written for a plurality of units, a division of the multiply written portions is detected, and signal processing is facilitated.

    摘要翻译： 使用数字音频磁带记录器作为数字数据存储记录器，并且将包含主数据和子数据的数字信号记录在形成在记录介质上的多个磁道的每个磁道中的分离区域中，其中预定数量的磁道构成 组和多个组被记录在介质上。 在子区域中，进一步记录识别信号，其指示记录在给定组的主要区域中的主要数据是否与记录在前一个和后续相邻组的主要区域中的主要数据相同。 当对于多个单元对相同的数据进行多次写入时，检测乘法写入部分的划分，并且便于信号处理。

    Apparatus for reproducing a digital signal
    10.
    发明授权
    Apparatus for reproducing a digital signal 失效
    用于再现数字信号的装置

    公开(公告)号：US4875111A

    公开(公告)日：1989-10-17

    申请号：US87093

    申请日：1987-08-19

    申请人： Kentaro Odaka ,  Tadashi Fukami ,  Shinya Ozaki

    发明人： Kentaro Odaka ,  Tadashi Fukami ,  Shinya Ozaki

    IPC分类号： G11B5/09 ,  G11B5/008 ,  G11B5/53 ,  G11B15/18 ,  G11B15/467 ,  G11B20/10 ,  G11B27/00 ,  G11B27/30

    CPC分类号： G11B15/1875 ,  G11B15/4672 ,  G11B20/10527 ,  G11B27/005 ,  G11B27/3027 ,  G11B27/3063 ,  G11B5/0086 ,  G11B5/534 ,  G11B2220/90 ,  G11B2220/913

    摘要： In an apparatus for reproducing a digital signal wherein a signal is read by a plurality of reproducing rotary heads which trace a track with an interval narrower than the interval of tracks formed on a tape, a wrap angle with which a tape is wrapped around the periphery of a rotary drum to which the rotary heads are attached is selected to be less than 360.degree./n with respect to the number n (n is an integer) of rotary heads, the rotary heads are rotated at a speed twice the normal rotational speed of the heads, the demodulated digital signal is stored in a memory corresponding to a frame address and a block address detected from the reproduced digital signal, and then the digital signal stored in the memory is read out therefrom in a predetermined order, whereby an apparatus for correcting the tracking of the tape by the rotary heads can be eliminated.

    摘要翻译： 在用于再现数字信号的装置中，其中通过多个再现旋转磁头来读取信号的装置，其以比形成在磁带上的轨迹的间隔窄的间隔跟踪轨道，将带缠绕在周边的包角 相对于旋转头的数量n（n是整数），将旋转头安装到的旋转磁鼓的旋转磁头选择为小于360°/ n，旋转磁头以正常转速的两倍的速度旋转 解调后的数字信号被存储在对应于从再现的数字信号检测的帧地址和块地址的存储器中，然后以预定顺序从存储器中读出存储在其中的数字信号，从而将装置 可以消除用于通过旋转磁头校正磁带的跟踪。