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31 条记录 (耗时 0.037 秒)

    Information recording/reproducing apparatus to record/reproduce information on a recording medium recorded with an address mark
    4.
    发明授权
    Information recording/reproducing apparatus to record/reproduce information on a recording medium recorded with an address mark 有权
    用于在记录有地址标记的记录介质上记录/再现信息的信息记录/再现装置

    公开(公告)号：US06400653B1

    公开(公告)日：2002-06-04

    申请号：US09355831

    申请日：1999-08-05

    申请人： Kenji Torazawa ,  Kenji Asano ,  Satoshi Sumi ,  Yoshiharu Uchihara ,  Noboru Mamiya ,  Toshiaki Hioki

    发明人： Kenji Torazawa ,  Kenji Asano ,  Satoshi Sumi ,  Yoshiharu Uchihara ,  Noboru Mamiya ,  Toshiaki Hioki

    IPC分类号： G11B1100

    CPC分类号： G11B11/10584 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/00718 ,  G11B7/00745 ,  G11B11/10513 ,  G11B11/10515 ,  G11B11/10565 ,  G11B11/10578 ,  G11B11/10595 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B2220/2525

    摘要： An magneto-optical disc recording/reproducing apparatus includes an optical head (36) to detect a wobble (46) and an address mark (81 to 84) in an magneto-optical disc (31) and output a wobble signal (WB1, WB2) and an address mark signal (AML, AMG), a PLL circuit (47) to generate a clock signal (CK) in response to wobble signal (WB1), an address mark synchronous signal generation circuit (46) to generate an address mark synchronous signal (AM) in response to address mark signal (AML, AMG), a synchronizing circuit (48) to synchronize clock signal (CK) with address mark synchronous signal (AM) and generate a synchronized clock signal (SCK), and a timing setting circuit (49) to generate a timing pulse signal (TG1) to control a magnetic head driving circuit (34) and a timing pulse signal (TG2) to control a laser driving circuit (35). The recording/reproducing apparatus can detect a address mark (81 to 84), record la data signal on magneto-optical disc (31) in synchronization with the detected address mark, and reproduce a data signal from magneto-optical disc (31) in synchronization with the detected address mark, so that the data signal can be surely recorded/reproduced.

    摘要翻译： 磁光盘记录/重放装置包括一个用于检测磁光盘（31）中的摆动（46）和地址标记（81至84）的光头（36），并输出摆动信号（WB1，WB2 ）和地址标记信号（AML，AMG），PLL电路（47），用于响应于摆动信号（WB1）产生时钟信号（CK），地址标记同步信号产生电路（46）产生地址标记 响应于地址标记信号（AML，AMG）的同步信号（AM），同步电路（48），用于将时钟信号（CK）与地址标记同步信号（AM）同步并产生同步时钟信号（SCK），以及 定时设定电路（49），生成用于控制磁头驱动电路（34）的定时脉冲信号（TG1）和定时脉冲信号（TG2），以控制激光驱动电路（35）。 记录/再现装置可以检测地址标记（81至84），与检测到的地址标记同步地在磁光盘（31）上记录数据信号，并且从磁光盘（31）再现数据信号 与检测到的地址标记进行同步，从而可以可靠地记录/再现数据信号。

    Storage medium recorded with recording/reproducing conditions depending upon recording densities and method of recording and reproducing therefor
    5.
    发明授权
    Storage medium recorded with recording/reproducing conditions depending upon recording densities and method of recording and reproducing therefor 失效
    根据记录密度及其记录和再现方法记录有记录/再现条件的存储介质

    公开(公告)号：US06339571B1

    公开(公告)日：2002-01-15

    申请号：US09026521

    申请日：1998-02-20

    申请人： Kenji Torazawa ,  Toshiaki Hioki

    发明人： Kenji Torazawa ,  Toshiaki Hioki

    IPC分类号： G11B700

    CPC分类号： G11B27/329 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/00736 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/126 ,  G11B11/10504 ,  G11B11/10515 ,  G11B11/10597 ,  G11B19/128 ,  G11B20/10009 ,  G11B20/1403 ,  G11B27/24 ,  G11B2220/216 ,  G11B2220/2525 ,  G11B2220/2529 ,  G11B2220/2545

    摘要： A table having a plurality of recording densities and a plurality of recording/reproducing conditions corresponding to the recording densities and each necessary for recording/reproducing a signal at a corresponding recording density is recorded in a TOC region of a magneto-optical disk. A recording/reproducing apparatus finds out a recording density at which it can record/reproduce data from the table and records or reproduces a signal at the recording density. The recording/reproducing conditions include the wavelength of a semiconductor laser, whether or not to employ the optical pulse magnetic field modulation recording method, the presence/absence of an optical super resolution pickup, whether or not to employ the optical pulse reproducing method, whether or not to employ the PRML method and the like. Therefore, if the recording/reproducing technology further advances, a signal may be recorded/reproduced to/from the magneto-optical disk at an optimum recording density without having to change the data format of the magneto-optical disk.

    摘要翻译： 具有多个记录密度和与记录密度对应的多个记录/再现条件的表格，并且每个记录/再现相应记录密度的信号所需的表被记录在磁光盘的TOC区域中。 记录/再现装置发现记录密度，其可以从表中记录/再现数据，并以记录密度记录或再现信号。 记录/再现条件包括半导体激光器的波长，是否采用光脉冲磁场调制记录方法，是否存在光学超分辨率拾取，是否采用光脉冲再现方法，是否 或不使用PRML方法等。 因此，如果记录/再现技术进一步前进，则可以以最佳记录密度将信号记录/再现到磁光盘，而不必改变磁光盘的数据格式。