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156 条记录 (耗时 0.024 秒)

    Apparatus and method for measuring signal quality
    1.
    发明授权
    Apparatus and method for measuring signal quality 有权
    用于测量信号质量的装置和方法

    公开(公告)号：US07952974B2

    公开(公告)日：2011-05-31

    申请号：US12833793

    申请日：2010-07-09

    申请人： Hyun-soo Park ,  Jae-seong Shim ,  Jae-wook Lee ,  Jung-hyun Lee ,  Eun-jin Ryu ,  Eing-seob Cho

    发明人： Hyun-soo Park ,  Jae-seong Shim ,  Jae-wook Lee ,  Jung-hyun Lee ,  Eun-jin Ryu ,  Eing-seob Cho

    IPC分类号： G11B7/00

    CPC分类号： G11B20/10009 ,  G11B20/10203 ,  G11B20/10296 ,  G11B20/10333

    摘要： An apparatus and method for measuring the quality of a signal on an optical disc based on level information of a viterbi decoder are provided. The signal quality measuring apparatus includes: a binary unit that generates binary signals from input RF signals; a channel identifier that receives the input RF signals and the binary signals output from the binary unit and outputs reference level values corresponding to the binary signals; and an information calculator that receives the reference level values and detects a signal quality value.

    摘要翻译： 提供了一种基于维特比解码器的电平信息来测量光盘上的信号质量的装置和方法。 信号质量测量装置包括：二进制单元，其从输入的RF信号产生二进制信号; 接收从二进制单元输出的输入RF信号和二进制信号并输出​​对应于二进制信号的参考电平值的信道标识符; 以及信息计算器，其接收参考电平值并检测信号质量值。

    Disk having unique code for identifying its type for optical disk player and method for discriminating types thereof
    2.
    发明授权
    Disk having unique code for identifying its type for optical disk player and method for discriminating types thereof 有权
    磁盘具有用于识别其光盘播放器类型的唯一代码和用于识别其类型的方法

    公开(公告)号：US07646690B2

    公开(公告)日：2010-01-12

    申请号：US11742631

    申请日：2007-05-01

    申请人： Jae-seong Shim

    发明人： Jae-seong Shim

    IPC分类号： G11B7/00

    CPC分类号： G11B7/00736 ,  G11B7/0037 ,  G11B7/0053 ,  G11B7/007 ,  G11B19/12 ,  G11B19/122 ,  G11B19/127 ,  G11B20/00086 ,  G11B20/00268 ,  G11B2007/0006 ,  G11B2007/0013

    摘要： A BCA (Burst Cutting Area) code including a unique disk code indicating the type of a disk is written in a BCA code area of the disk. If the disk is mounted into the optical disk player, the optical disk player reads data written in the BCA code area, extracts the disk code contained in the read data, and confirms the type of the disk corresponding to the extracted disk code by retrieving a disk code table in which disk codes corresponding to the types of disks are mapped.

    摘要翻译： 包括指示磁盘类型的唯一磁盘代码的BCA（突发切割区域）代码被写入到盘的BCA代码区域中。 如果盘被安装到光盘播放器中，则光盘播放器读取在BCA代码区中写入的数据，提取包含在读取数据中的磁盘代码，并通过检索提取的磁盘代码来确认对应于提取的磁盘代码的磁盘的类型 磁盘代码表，其中映射了与磁盘类型相对应的磁盘代码。

    Code generation and allocation apparatus
    3.
    发明授权
    Code generation and allocation apparatus 失效
    代码生成和分配设备

    公开(公告)号：US07616135B2

    公开(公告)日：2009-11-10

    申请号：US12027317

    申请日：2008-02-07

    申请人： Jae-seong Shim ,  Ki-hyun Kim ,  Hyun-soo Park ,  Kiu-hae Jung ,  Iqbal Mahboob

    发明人： Jae-seong Shim ,  Ki-hyun Kim ,  Hyun-soo Park ,  Kiu-hae Jung ,  Iqbal Mahboob

    IPC分类号： H03M7/00

    CPC分类号： G11B20/1426 ,  G11B2020/1457 ,  H03M5/145 ,  H03M7/46

    摘要： A method of generating and allocating codewords includes allocating one of two selectable codewords b1 and b2 as codeword “b” when a preceding codeword “a” and a following codeword “b” form a code stream X, in which the codewords b1 and b2 have opposite INV values which are parameters indicating whether the number of ‘1s’ contained in a codeword is an odd number or an even number. When the code stream of the preceding codeword “a” and the following codeword b1 is X1, and when the code stream of the preceding codeword “a” and the following codeword b2 is X2, the codewords are allocated such that the INV values of X1 and X2 are maintained to be opposite when the preceding codeword “a” or the following codeword b1 (b2) (b1 or b2) should be replaced by another codeword in compliance with a predetermined boundary condition given between codewords. The codewords are allocated so that a DC suppression capability of the code stream can be maintained.

    摘要翻译： 一种产生和分配码字的方法包括：当前一个码字“a”和随后的码字“b”形成码流X时，将两个可选码字b1和b2之一分配为码字“b”，其中码字b1和b2具有 相反的INV值，其是指示码字中包含的“1”的数目是奇数还是偶数的参数。 当前一个码字“a”的码流和随后的码字b1为X1时，当前一个码字“a”和随后的码字b2的码流为X2时，分配码字，使得X1的INV值 并且当前面的码字“a”或者随后的码字b1（b2）（b1或b2）应该被替换为符合在码字之间给定的预定边界条件的另一码字时，X2被维持为相反。 分配码字使得能够维持码流的DC抑制能力。

    Data modulating method and apparatus, data demodulating method and apparatus, and code arranging method
    4.
    发明授权
    Data modulating method and apparatus, data demodulating method and apparatus, and code arranging method 有权
    数据调制方法及装置，数据解调方法及装置及代码排列方法

    公开(公告)号：US07450034B2

    公开(公告)日：2008-11-11

    申请号：US11943794

    申请日：2007-11-21

    申请人： Jae-seong Shim ,  Jin-han Kim ,  Kiu-hae Jung

    发明人： Jae-seong Shim ,  Jin-han Kim ,  Kiu-hae Jung

    IPC分类号： H03M7/00

    CPC分类号： G11B20/1426 ,  H03M5/145

    摘要： In a data demodulating method and apparatus, and a code arranging method, a multiplexer multiplexes an input data stream divided by a predetermined length into a plurality of types of pseudo random data streams using multiplexed information of predetermined bits by applying a predetermined multiplexing method to each of the pseudo random data streams. An encoder RLL-modulates the plurality of types of pseudo random data streams to create a modulated code stream including a minimum of DC components. The multiplexer generates the random data streams by inconsecutively scrambling the input data stream using the multiplexed information. The encoder weak DC-free RLL-modulates each of the multiplexed data streams without using a DC control sub code conversion table to which additional bits are added and provides a code stream including a minimum of DC components among multiplexed, RLL-modulated code streams.

    摘要翻译： 在数据解调方法和装置以及代码排列方法中，多路复用器将预定长度分割的输入数据流复用到多种类型的伪随机数据流中，该多个类型的伪随机数据流使用预定比特的多路复用信息， 的伪随机数据流。 编码器RLL调制多种类型的伪随机数据流以创建包括最小DC分量的调制码流。 复用器通过使用多路复用信息不断地对输入数据流进行加扰来产生随机数据流。 编码器弱无DC的RLL调制每个复用的数据流，而不使用添加了附加位的DC控制子码转换表，并且在多路复用的RLL调制码流之间提供包括最小DC分量的码流。

    Error correction method for high density disc
    9.
    发明授权
    Error correction method for high density disc 有权
    高密度光盘纠错方法

    公开(公告)号：US07370267B2

    公开(公告)日：2008-05-06

    申请号：US10890225

    申请日：2004-07-14

    申请人： Jae-seong Shim ,  Myoung-june Kim ,  In-sik Park

    发明人： Jae-seong Shim ,  Myoung-june Kim ,  In-sik Park

    IPC分类号： G06F11/00 ,  H03M13/00

    CPC分类号： H03M13/1515 ,  G11B20/10527 ,  G11B20/1217 ,  G11B20/18 ,  G11B20/1833 ,  G11B27/00 ,  G11B2220/2562 ,  G11B2220/2579 ,  H03M13/15 ,  H03M13/27 ,  H03M13/2703 ,  H03M13/29 ,  H03M13/2903 ,  H03M13/2906 ,  H03M13/2909 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0071

    摘要： An error correction method for optical discs, and more particularly, an error correction method appropriate to high density discs is provided. The error correction method adds inner parity and outer parity to an error correction block of size n byte x m x o. The method comprises the steps of obtaining a plurality of inner parity blocks (PI blocks) by segmenting the error correction block in the inner parity (PI) direction into x segments; generating e-byte PI for each of the plurality of PI blocks generated by segmenting, and adding e-bytes PIs to the PI blocks in the PI direction; and generating f-byte outer parity (PO) in the PO direction of the error correction block, and adding the POs to the PO direction. The error correction method enhances error correction capability while maintaining a redundancy of parity signal on a level similar to conventional DVDs.

    摘要翻译： 提供了一种光盘的纠错方法，特别是适用于高密度盘的纠错方法。 误差校正方法将内奇偶校验和外奇偶校验添加到大小为n字节×m×o的纠错块。 该方法包括以下步骤：通过将内部奇偶校验（PI）方向上的纠错块分割成x段来获得多个内部奇偶校验块（PI块）; 为通过分割生成的多个PI块中的每一个产生e字节PI，并将PI字节PI添加到PI方向上的PI块; 以及在纠错块的PO方向上产生f字节外部奇偶校验（PO），并将PO添加到PO方向。 误差校正方法提高了纠错能力，同时保持奇偶校验信号的冗余度与常规DVD类似。