Method of encoding and decoding
    1.
    发明授权
    Method of encoding and decoding 有权
    编码和解码方法

    公开(公告)号:US08683300B2

    公开(公告)日:2014-03-25

    申请号:US12465747

    申请日:2009-05-14

    IPC分类号: H03M13/00

    摘要: The invention relates to a method of encoding user data into codevectors and to a corresponding method of decoding codevectors into user data. In order to be able to use the same ECC decoder for decoding of more than one type of data a method of encoding is proposed comprising the steps of: generating a first block of a fixed first number of data symbols by taking a fixed second number, being smaller than said first number, of user data symbols, and a fixed third number of dummy data symbols, and by arranging said user data symbols and said dummy data symbols in a predetermined order, encoding said first block of data symbols using an ECC encoder (2) to obtain a codeword having a fixed number of symbols, said codeword comprising said first block of data symbols and a second block of a fixed forth number of parity symbols, and generating a codevector by selecting a fifth predetermined number of user data symbols and a sixth predetermined number of parity symbols from said codeword, the sum of said fifth and sixth number being predetermined and smaller than the sum of said second and forth number.

    摘要翻译: 本发明涉及一种将用户数据编码为码向量的方法以及将码向量解码为用户数据的对应方法。 为了能够使用相同的ECC解码器来解码多于一种类型的数据,提出了一种编码方法,包括以下步骤:通过采取固定的第二数量来产生固定的第一数量的数据符号的第一块, 小于所述第一数量的用户数据符号和固定的第三数量的伪数据符号,并且通过以预定顺序布置所述用户数据符号和所述伪数据符号,使用ECC编码器对所述第一数据符号块进行编码 (2)以获得具有固定数目的符号的码字,所述码字包括所述第一数据符号块和固定的第三数量奇偶校验符号的第二块,并且通过选择第五预定数量的用户数据符号来生成码矢量 以及来自所述码字的第六预定数量的奇偶校验符号,所述第五和第六数字的和是预定的并且小于所述第二和第四数的和。

    Method of encoding and decoding
    4.
    发明授权
    Method of encoding and decoding 有权
    编码和解码方法

    公开(公告)号:US07200795B2

    公开(公告)日:2007-04-03

    申请号:US10501824

    申请日:2002-12-12

    IPC分类号: H03M13/00

    摘要: User data may be encoded into codevectors as follows. A first block of data symbols is generated by arranging a predetermined number of user data symbols and a predetermined number of dummy data symbols in a predetermined order. The first block of data symbols is encoded using an ECC encoder to obtain a codeword having a predetermined number of symbols, the codeword comprising the first block of data symbols and a second block of parity symbols. Then a codevector is generated containing less then all the user data symbols and parity symbols from the codeword. The codevector can be stored or transmitted. The codevector may be decoded by generating a codeword comprising dummy data symbols, a codevector, and filling symbols, arranged in a predetermined order. Then decoding the codeword using an ECC decoder to obtain the user data symbols.

    摘要翻译: 用户数据可以被编码为代码矢量如下。 通过以预定顺序布置预定数量的用户数据符号和预定数量的伪数据符号来生成第一数据符号块。 使用ECC编码器对第一数据符号块进行编码,以获得具有预定数量符号的码字,该码字包括第一数据符号块和第二奇偶校验符号块。 然后,生成包含来自码字的小于所有用户数据符号和奇偶校验符号的码矢量。 可以存储或传输代码向量。 可以通过以预定顺序生成包括伪数据符号,码矢量和填充符号的码字来解码码矢。 然后使用ECC解码器解码码字以获得用户数据符号。

    Disc-shaped recording medium, disc driving device and disc producing method
    7.
    发明授权
    Disc-shaped recording medium, disc driving device and disc producing method 有权
    碟形记录介质,盘驱动装置和盘制造方法

    公开(公告)号:US07221644B2

    公开(公告)日:2007-05-22

    申请号:US10515191

    申请日:2003-05-22

    IPC分类号: G11B7/24

    CPC分类号: G11B7/24038 G11B7/00736

    摘要: With the disc-shaped recording medium, or the disc manufacturing method according to the present invention, for both the single-layer disc and the multi-layer disc, a recording layer L0, which is to be the first layer, is at the same distance, along the direction of disc thickness, from the surface of the cover layer CVLs on which falls the laser light. For the multi-layer disc, the second layer L1 and the following layer(s) are formed at the locations which are closer to the cover layer CVLs than the first layer L0. Management information may be recorded by mobbling grooves, each layermay have tert areas, defect information, a replacement area. Thus, it is possible to improve compatibility, reliability and accessibility between a single-layer disc and a multi-layer disc. The spherical aberration for the recording/reproducing light may be controlled with respect to the selected layer.

    摘要翻译: 根据本发明的盘形记录介质或盘制造方法,对于单层盘和多层盘两者,作为第一层的记录层L 0处于 沿着光盘厚度的方向与从其上落下的激光的覆盖层CVL的表面相同的距离。 对于多层盘,第二层L 1和下一层形成在比第一层L 0更靠近覆盖层CVL的位置处。 管理信息可以通过移动槽记录,每个铺位都有叔区,缺陷信息,替换区。 因此,可以提高单层盘和多层盘之间的兼容性,可靠性和可访问性。 可以相对于所选择的层来控制记录/再现光的球面像差。