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175 条记录 (耗时 0.043 秒)

    Information recording medium, reproduction method, reproduction apparatus and manufacturing apparatus thereof
    35.
    发明申请
    Information recording medium, reproduction method, reproduction apparatus and manufacturing apparatus thereof 审中-公开
    信息记录介质，再现方法，再现装置及其制造装置

    公开(公告)号：US20050276213A1

    公开(公告)日：2005-12-15

    申请号：US11150341

    申请日：2005-06-13

    申请人： Akihito Ogawa ,  Chosaku Noda ,  Yutaka Kashihara ,  Yuji Nagai

    发明人： Akihito Ogawa ,  Chosaku Noda ,  Yutaka Kashihara ,  Yuji Nagai

    IPC分类号： G11B7/005 ,  G11B7/007 ,  G11B7/26 ,  G11B27/19 ,  G11B27/24 ,  G11B7/24

    CPC分类号： G11B7/00745 ,  G11B7/0053 ,  G11B7/24082 ,  G11B7/261 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2562 ,  G11B2220/2575

    摘要： The numbers of times by which plural types of segments are consecutively arranged are limited, an address reading performance is enhanced and address information is correctly read out based on determination of the number of consecutive segments. A track is divided into physical segments, N (=17) wobble data units of constant length are formed in each physical segment, the wobble data unit (WDU) is defined to include a first unit (P) having a wobble modulation portion in a first half portion, a second unit (S) having a wobble modulation portion in a latter half portion and a third unit (U) having no wobble modulation portion, and the physical segment is defined to have segment types (TYPE 1, 2, 3) which each include the third unit (U) in a certain area thereof without fail and respectively include the first, second and a combination of the first and second units in the remaining areas. In the arrangement on the track, a lower-limit number of times M1 by which the first and second types (TYPE1, TYPE2) are consecutively arranged and an upper-limit number of times M2 by which the second types (TYPE2) are consecutively arranged are limited and the first type (TYPE1) and the second type (TYPE2) are respectively arranged immediately before and after the third type (TYPE3).

    摘要翻译： 多个段连续排列的次数被限制，地址读取性能得到提高，并且基于确定连续段的数量来正确地读出地址信息。 轨道被分成物理段，在每个物理段中形成N（= 17）个恒定长度的摆动数据单元，摆动数据单元（WDU）被定义为包括具有摆动调制部分的第一单元（P） 前半部分，在后半部分具有摆动调制部分的第二单元（S）和没有摆动调制部分的第三单元（U），物理段被定义为具有段类型（类型1,2,3 ），其每一个都包括在其某一区域中的第三单元（U），并且分别包括其余区域中的第一单元，第二单元和第一单元和第二单元的组合。 在轨道上的布置中，连续布置第一和第二类型（TYPE1，TYPE2）的下限次数M1和第二类型（TYPE2）连续布置的上限次数M2 是第一类型（TYPE1）和第二类型（TYPE2）分别紧靠在第三类型（TYPE3）之前和之后。

    Information recording medium, information reproduction apparatus, and information recording apparatus
    38.
    发明授权
    Information recording medium, information reproduction apparatus, and information recording apparatus 失效
    信息记录介质，信息再现装置和信息记录装置

    公开(公告)号：US06757230B2

    公开(公告)日：2004-06-29

    申请号：US09916591

    申请日：2001-07-30

    申请人： Chosaku Noda ,  Yutaka Okamoto ,  Yutaka Kashihara ,  Hideo Ando

    发明人： Chosaku Noda ,  Yutaka Okamoto ,  Yutaka Kashihara ,  Hideo Ando

    IPC分类号： G11B700

    CPC分类号： G11B27/3027 ,  G11B7/007 ,  G11B27/19 ,  G11B27/24 ,  G11B2220/2587

    摘要： An information recording medium of this invention has a spiral track. The spiral track has one or more header fields per round of the spiral track, and a data field located between neighboring header fields. The data field has a variable length corresponding to an integer multiple of a predetermined length Lw so as to minimize a deviation between the n-th header field in a predetermined round of the spiral track, and the n-th header field in a round different from the predetermined round in the track direction.

    摘要翻译： 本发明的信息记录介质具有螺旋轨迹。 螺旋轨迹每循环轨道具有一个或多个报头字段，以及位于相邻报头字段之间的数据字段。 数据字段具有对应于预定长度Lw的整数倍的可变长度，以便最小化螺旋形轨道的预定回合中的第n个报头字段与轮的不同的第n个报头字段之间的偏差 从轨道方向上的预定轮。

    Data generation method and apparatus
    39.
    发明授权
    Data generation method and apparatus 失效
    数据生成方法和装置

    公开(公告)号：US06338155B1

    公开(公告)日：2002-01-08

    申请号：US09285457

    申请日：1999-04-02

    申请人： Chosaku Noda

    发明人： Chosaku Noda

    IPC分类号： G11C2900

    CPC分类号： G11B20/1833 ,  G11B27/3027

    摘要： A data generator generating a data stream having a first data generation unit and a second data generation unit. The first data generation unit recording data on a recording medium with a first recording density. The first and second units encoding input digital data in accordance with a first error correction coding to generate a first check parity, making a unit block having a data area and the first check parity provided at an end of data area, and dividing the unit block. The first unit providing a sync pattern at a head of each of the first divided areas to obtain a first data stream. The second data generation unit recording data on a recording medium with a second recording density. The second unit providing a sync pattern at a head of the unit block to obtain a second data stream.

    摘要翻译： 产生具有第一数据生成单元和第二数据生成单元的数据流的数据生成单元。 第一数据生成单元在具有第一记录密度的记录介质上记录数据。 第一单元和第二单元根据第一纠错编码编码输入数字数据，以产生第一校验奇偶校验，使得具有数据区的单位块和在数据区的结尾设置的第一校验奇偶校验，并将单位块 。 第一单元在每个第一分割区域的头部提供同步模式以获得第一数据流。 第二数据生成单元在具有第二记录密度的记录介质上记录数据。 第二单元在单元块的头部提供同步模式以获得第二数据流。

    Recording data generation method, recording medium on which data is recorded, and data reproducing apparatus
    40.
    发明授权
    Recording data generation method, recording medium on which data is recorded, and data reproducing apparatus 失效
    记录数据生成方法，记录数据的记录介质和数据再现装置

    公开(公告)号：US06175686B1

    公开(公告)日：2001-01-16

    申请号：US08845493

    申请日：1997-04-25

    申请人： Chosaku Noda

    发明人： Chosaku Noda

    IPC分类号： H04N591

    CPC分类号： G11B20/1262 ,  G11B20/1809 ,  H04N5/85 ,  H04N5/9261

    摘要： A method of generating recording data of an extended format corresponding to a recording density higher than that of a standard format, includes the steps of dividing an input data sequence into a plurality of channels in units of predetermined data, performing error correction encoding for the respective channels by using the same error correction code as that of the standard format, thereby generating error correction blocks, synthesizing the error correction blocks of the respective channels, and generating recording data of the extended format from the synthesized error correction block.

    摘要翻译： 一种生成对应于高于标准格式的记录密度的记录密度的扩展格式的记录数据的方法包括以下步骤：以预定数据为单位将输入数据序列划分为多个通道，对相应的数据进行纠错编码 通过使用与标准格式相同的纠错码，从而产生纠错块，合成各个通道的纠错块，并从合成误差校正块生成扩展格式的记录数据。