Information carrier comprising access information
    2.
    发明申请
    Information carrier comprising access information 有权
    信息载体包括访问信息

    公开(公告)号:US20060190741A1

    公开(公告)日:2006-08-24

    申请号:US10545640

    申请日:2004-02-05

    IPC分类号: G06F12/14

    摘要: The invention relates to an information carrier for holding user information, the information carrier comprising access information in the form of access information bits for accessing the user information, the access information bits being stored on the information carrier in a variation of a parameter, which variation is detectable by integration detection. The access information bits are scrambled according to a pre-determined scrambling method. By scrambling the access information bits according to a pre-determined scrambling method detection of the access information is not possible as long as the scrambling method is not known. Using the integration detection technique only results in the access information is one knows how the signal obtained after reading-out the area comprising the access information bits must be processed. In this way illegal retrieval of the user information is further prevented.

    摘要翻译: 本发明涉及一种用于保存用户信息的信息载体,该信息载体包括用于访问用户信息的访问信息比特形式的访问信息,访问信息比特以参数的变化存储在信息载体上,该变化 可通过积分检测来检测。 访问信息比特根据预定的加扰方法进行加扰。 只要加扰方法是未知的,通过根据预定的加扰方法对访问信息比特进行加扰是不可能的。 使用积分检测技术仅导致访问信息是知道如何处理在读出包括访问信息位的区域之后获得的信号。 以这种方式进一步防止用户信息的非法检索。

    Information carrier comprising access information
    6.
    发明授权
    Information carrier comprising access information 有权
    信息载体包括访问信息

    公开(公告)号:US08718277B2

    公开(公告)日:2014-05-06

    申请号:US10545640

    申请日:2004-02-05

    IPC分类号: H04K1/10

    摘要: An information carrier for holding user information, the information carrier comprising access information in the form of access information bits for accessing the user information, the access information bits being stored on the information carrier in a variation of a parameter, which variation is detectable by integration detection. The access information bits are scrambled according to a pre-determined scrambling method. By scrambling the access information bits according to a pre-determined scrambling method, detection of the access information is not possible as long as the scrambling method is not known. Using the integration detection technique, the only way to obtain the access information is by knowing how the signal obtained after reading-out the area comprising the access information bits must be processed. In this way illegal retrieval of the user information is further prevented.

    摘要翻译: 一种用于保存用户信息的信息载体,所述信息载体包括用于访问用户信息的访问信息位形式的访问信息,访问信息位存储在信息载体上的参数变化中,所述变化可通过集成检测 检测。 访问信息比特根据预定的加扰方法进行加扰。 通过根据预定的加扰方法对访问信息比特进行加扰,只要加扰方法是未知的,则访问信息的检测是不可能的。 使用积分检测技术,获得访问信息的唯一方法是知道如何在读出包含访问信息位的区域之后获得的信号如何被处理。 以这种方式进一步防止用户信息的非法检索。

    Method of encoding and decoding
    7.
    发明申请
    Method of encoding and decoding 有权
    编码和解码方法

    公开(公告)号:US20050034047A1

    公开(公告)日:2005-02-10

    申请号:US10501824

    申请日:2002-12-12

    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: a) 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, b) 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 (c) 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:a)通过采取固定的第二数据符号来产生固定的第一数量的数据符号的第一块 数字,小于所述第一数量的用户数据符号,以及固定的第三数量的虚拟数据符号,并且以预定顺序布置所述用户数据符号和所述虚拟数据符号,b)编码所述第一数据符号块 使用ECC编码器(2)来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的奇偶校验符号的第二块,以及(c)通过选择一个 第五预定数量的用户数据符号和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。

    System for demodulating a signal
    8.
    发明授权
    System for demodulating a signal 有权
    用于解调信号的系统

    公开(公告)号:US09134813B2

    公开(公告)日:2015-09-15

    申请号:US13260584

    申请日:2010-03-24

    CPC分类号: G06F3/0317 H04L27/22

    摘要: A demodulating system (100) for demodulating a phase-modulated input signal (Si) comprises: a complex demodulator (110), having a first input (111) for receiving the phase-modulated input signal (Si) and being designed to perform complex multiplication of this signal with an approximation of the inverse of the phase modulation; a spectrum analyzing device (130) receiving the demodulated product signal produced by the complex demodulator (110) and capable of analyzing the frequency spectrum of the demodulated product signal.

    摘要翻译: 用于解调相位调制输入信号(Si)的解调系统(100)包括:复数解调器(110),具有用于接收相位调制输入信号(Si)的第一输入端(111),并被设计成执行复合 该信号与相位调制的逆的近似相乘; 频谱分析装置(130),接收由所述复数解调器(110)产生的解调产品信号,并能够分析所述解调产物信号的频谱。

    Method of encoding and decoding
    9.
    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。