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    Method for reproducing compressed information data from a disk using a spatial frequency less than the track pitch
    4.
    再颁专利
    Method for reproducing compressed information data from a disk using a spatial frequency less than the track pitch 有权
    使用小于轨道间距的空间频率从盘再现压缩信息数据的方法

    公开(公告)号：USRE38802E1

    公开(公告)日：2005-09-27

    申请号：US09732395

    申请日：2000-12-07

    申请人： Jun Yonemitsu ,  Ryuichi Iwamura ,  Shunji Yoshimura ,  Makoto Kawamura

    发明人： Jun Yonemitsu ,  Ryuichi Iwamura ,  Shunji Yoshimura ,  Makoto Kawamura

    IPC分类号： H04N5/85 ,  H04N5/91 ,  H04N9/804

    CPC分类号： H04N9/8042 ,  H04N5/85

    摘要： Method and apparatus for reproducing MPEG-compressed video data and compressed audio data from an optical disk having a diameter less than 140 mm and, a thickness of 1.2 mm±0.1 mm, with a plurality of record tracks having data recorded thereon as embossed pits representing information and exhibiting a track pitch in the range between 0.646 μm and 1.05 μm; with the tracks being divided into a lead-in area, a program area and a lead-out area. The data includes table of contents (TOC) information recorded in a plurality of sectors in at least one TOC track and user information recorded in a plurality of sectors in user tracks. The user information is comprised of MPEG-compressed video data, which may exhibit any one of difference MPEG formats, and compressed audio data, which likewise may exhibit an MPEG format, a PCM format or the like. The TOC information includes addresses of start sectors recorded in the user tracks and also includes application table of contents (ATOC) information which identifies various parameters for accessing and using the user information. The data (both user, TOC and ATOC information) is encoded in a long distance error correction code having at least eight parity symbols.

    摘要翻译： 用于从具有直径小于140mm的光盘和1.2mm±0.1mm的光盘再现MPEG压缩视频数据和压缩音频数据的方法和装置，其中记录有数据的多个记录轨道作为浮雕凹坑 信息，并展示了0.646mum和1.05mam之间的轨道间距; 轨道分为导入区，程序区和导出区。 数据包括记录在至少一个TOC轨道中的多个扇区中的目录（TOC）信息和记录在用户轨道中的多个扇区中的用户信息。 用户信息由MPEG压缩视频数据组成，MPEG视频数据可以表示MPEG格式的差异，压缩音频数据也可以表现出MPEG格式，PCM格式等。 TOC信息包括记录在用户轨道中的开始扇区的地址，并且还包括标识用于访问和使用用户信息的各种参数的应用内容表（ATOC）信息。 数据（用户，TOC和ATOC信息两者）被编码在具有至少八个奇偶校验符号的长距离纠错码中。