Optical recording medium having a plurality of sectors separated by sync
signals
    1.
    发明授权
    Optical recording medium having a plurality of sectors separated by sync signals 失效
    具有由同步信号分离的多个扇区的光记录介质

    公开(公告)号:US5886985A

    公开(公告)日:1999-03-23

    申请号:US964874

    申请日:1997-11-05

    摘要: An optical disc having address information recorded in a wobbling manner is arranged to record or reproduce data at correct positions. A track is previously formed as a pregroove and is wobbled in accordance with address information. The track is divided into a plurality of sectors. A plurality of sync marks S are formed in each sector, and at least one of the sync marks in one round of the track is formed as a reference mark R different from the other sync marks S. To reduce overhead and to achieve highdensity random recording and reproduction, a method may also be used in which one cluster of data is formed of a data area and a link area located between data areas and consisting of two frames, in which each of the data area and the link area has a structure formed of unit frames separated by a sync signal (frame sync), and in which data is recorded or reproduced as unit clusters.

    摘要翻译: 具有以摆动方式记录的地址信息的光盘被布置为在正确位置记录或再现数据。 轨道以前形成为预制槽,并且根据地址信息而摇摆。 轨道被分成多个扇区。 在每个扇区中形成多个同步标记S,并且将一轮中的至少一个同步标记形成为与另一个同步标记S不同的参考标记R.为了减少开销并实现高密度随机记录 并且还可以使用一种方法,其中一组数据由数据区域和位于数据区域之间的链路区域形成,并由两个帧组成,其中数据区域和链接区域中的每一个具有形成的结构 的单位帧由同步信号(帧同步)分隔,并且其中数据被记录或再现为单位簇。

    Optical disc, apparatus and method for recording and reproducing data
    3.
    发明授权
    Optical disc, apparatus and method for recording and reproducing data 失效
    用于记录和再现数据的光盘,装置和方法

    公开(公告)号:US5835461A

    公开(公告)日:1998-11-10

    申请号:US964613

    申请日:1997-11-05

    摘要: An optical disc having address information recorded in a wobbling manner is arranged to record or reproduce data at correct positions. A track is previously formed as a pregroove and is wobbled in accordance with address information. The track is divided into a plurality of sectors. A plurality of sync marks S are formed in each sector, and at least one of the sync marks in one round of the track is formed as a reference mark R different from the other sync marks S. To reduce overhead and to achieve high-density random recording and reproduction, a method may also be used in which one cluster of data is formed of a data area and a link area located between data areas and consisting of two frames, in which each of the data area and the link area has a structure formed of unit frames separated by a sync signal (frame sync), and in which data is recorded or reproduced as unit clusters.

    摘要翻译: 具有以摆动方式记录的地址信息的光盘被布置为在正确位置记录或再现数据。 轨道以前形成为预制槽,并且根据地址信息而摇摆。 轨道被分成多个扇区。 在每个扇区中形成多个同步标记S,并且将一个轨迹中的一个同步标记中的至少一个形成为与另一个同步标记S不同的参考标记R.为了减少开销并实现高密度 随机记录和再现,还可以使用一种数据集合由数据区域和位于数据区域之间并由两个帧组成的链接区域形成的方法,其中数据区域和链接区域中的每一个具有 由同步信号(帧同步)分离的单位帧形成的结构,其中数据被记录或再现为单位簇。

    Method and apparatus for encoding a binary digital information signal
    7.
    发明授权
    Method and apparatus for encoding a binary digital information signal 失效
    用于对二进制数字信息信号进行编码的方法和装置

    公开(公告)号:US4539691A

    公开(公告)日:1985-09-03

    申请号:US416685

    申请日:1982-09-10

    摘要: A system for encoding a binary digital information signal comprised of 8-bit information words occurring within a frequency band to produce an encoded binary digital information signal comprised of 17-bit channel words formed of 14-bit information words and 3-bit separation words and with the encoded signal satisfying the d- and k-constraint rules, reducing DC imbalance and having substantially reduced components thereof in a predetermined undesirable lower frequency range of the frequency band, the system converting each 8-bit information word into a 14-bit information word; generating a set of four possible 3-bit separation words for use each 14-bit information word which satisfy the d- and k-constraint rules; determining an integrating transfer function characteristic having a high gain with respect to the predetermined frequency range; obtaining a step response by modifying each 14-bit information word and each respective possible 3-bit separation word by the integrating transfer function characteristic; evaluating the step response for a predetermined number of 14-bit information words and respective possible 3-bit separation words, either separately for each word or at the end of each possible 17-bit channel word, to obtain values including information with respect to the predetermined frequency range; selecting the possible 3-bit separation word for each 14-bit information corresponding to a respective one of the values which is closest to zero; and adding each selected 3-bit separation word to each respective 14-bit information word to produce a plurality of 17-bit channel words which form the encoded binary digital information signal.

    摘要翻译: 一种用于编码由频带内出现的8位信息字组成的二进制数字信息信号的系统,以产生由由14位信息字和3位分离字形成的17位通道字组成的编码二进制数字信息信号;以及 编码的信号满足d-和k-约束规则,减少DC不平衡并且在频带的预定的不希望的较低频率范围内基本上减少其分量,该系统将每个8位信息字转换成14位信息 字; 生成一组四个可能的3位分离词,用于使用满足d-和k-约束规则的每个14位信息字; 确定相对于所述预定频率范围具有高增益的积分转移函数特性; 通过积分传递函数特性修改每个14位信息字和每个相应可能的3位分离字来获得阶跃响应; 对于每个单独的单词或每个可能的17比特信道字的结尾,对预定数量的14位信息字和各个可能的3位分离字评估阶跃响应,以获得包括关于 预定频率范围; 为对应于最接近于零的相应一个值的每个14位信息选择可能的3位分离字; 并将每个所选择的3位分离字添加到每个相应的14位信息字以产生形成编码的二进制数字信息信号的多个17位信道字。