Method for using encoded spreading codes to achieve high bit densities in a direct-sequence spread spectrum communication system
    15.
    发明授权
    Method for using encoded spreading codes to achieve high bit densities in a direct-sequence spread spectrum communication system 失效
    在直接序列扩频通信系统中使用编码的扩展码来实现高比特密度的方法

    公开(公告)号:US06980583B2

    公开(公告)日:2005-12-27

    申请号:US10457983

    申请日:2003-06-09

    申请人: David M. Horne

    发明人: David M. Horne

    IPC分类号: H04B1/707 H04J13/10 H04J13/16

    CPC分类号: H04J13/10 H04B1/707 H04J13/16

    摘要: A method for achieving high bit densities in a direct-sequence spread spectrum communication system by using encoded spreading codes. An encoded pseudo-noise code is first created. This encoded pseudo-noise code is then used to spread an information signal by modulating the information signal with the encoded pseudo-noise code. The same encoded pseudo-noise code is also used to demodulate the signal. The encoded pseudo-noise code is created by inverting one bit of a pseudo-noise code where the inverted bit corresponds to the value of the information signal.

    摘要翻译: 一种通过使用编码扩展码在直接序列扩频通信系统中实现高比特密度的方法。 首先创建编码的伪噪声码。 然后,该编码的伪噪声码用于通过用编码的伪噪声码调制信息信号来扩展信息信号。 相同的编码伪噪声码也用于解调信号。 编码的伪噪声码是通过将反相位对应于信号信号的值的伪噪声码的一个位反相来产生的。

    Method for using codebook indexing to achieve high bit densities in a direct-sequence CDMA spread spectrum communication system
    16.
    发明授权
    Method for using codebook indexing to achieve high bit densities in a direct-sequence CDMA spread spectrum communication system 失效
    在直接序列CDMA扩频通信系统中使用码本索引来实现高比特密度的方法

    公开(公告)号:US07301983B1

    公开(公告)日:2007-11-27

    申请号:US09002747

    申请日:1998-01-05

    申请人: David M. Horne

    发明人: David M. Horne

    IPC分类号: H04K1/00

    摘要: A method for achieving high bit densities in a direct-sequence CDMA spread spectrum communication system. A table of orthogonal pseudo-noise codes is stored. This table is then partitioned into multiple codebook. Then, the codebook is assigned to a user. The pseudo-noise code contained within the codebooks are used to spread information signal. Information signal for a first user is spread by a pseudo-noise code contained within the codebook assigned to the first user. Multiple bits of information signal may be sent at a time by using the location of the pseudo-noise code within the codebook such that the value of the information signal corresponds the location of the pseudo-noise code within the codebook. The information signal is then despread by using the same pseudo-noise code.

    摘要翻译: 一种用于在直接序列CDMA扩频通信系统中实现高比特密度的方法。 存储正交伪噪声码表。 然后将该表分成多个码本。 然后,将码本分配给用户。 码本中包含的伪噪声码用于扩展信息信号。 用于第一用户的信息信号由包含在分配给第一用户的码本内的伪噪声码扩展。 可以通过使用码本内的伪噪声码的位置来一次发送信息信号的多个比特,使得信息信号的值对应于码本内的伪噪声码的位置。 然后通过使用相同的伪噪声码对信息信号进行解扩。

    Method for providing security for a transmission of information through a plurality of frequency orthogonal subchannels
    17.
    发明授权
    Method for providing security for a transmission of information through a plurality of frequency orthogonal subchannels 有权
    用于提供通过多个频率正交子信道传输信息的安全性的方法

    公开(公告)号:US06501841B1

    公开(公告)日:2002-12-31

    申请号:US09216476

    申请日:1998-12-17

    申请人: David M. Horne

    发明人: David M. Horne

    IPC分类号: H04K104

    CPC分类号: H04J13/00 H04L27/2602

    摘要: One embodiment of the present invention is a method for providing security for a transmission of information in an ADSL environment using a DMT modulation technique. The order of the frequency orthogonal subchannels used in the DMT technique is scrambled according to a permutation cipher. The key for this scrambling operation is scrambled with the subscriber's public key, and is encoded according to a CDMA technique for transmission through the ADSL channel approximately concurrently with the information. The encoded key and the DMT data subblocks are recovered from the secured transmission. The encoded key is decoded according to the CDMA technique to generate the decoded key. The decoded key is used to assign an order to the subblocks of data.

    摘要翻译: 本发明的一个实施例是一种使用DMT调制技术在ADSL环境中提供信息传输的安全性的方法。 在DMT技术中使用的频率正交子信道的顺序根据置换密码进行加扰。 该加扰操作的关键是用用户的公共密钥进行加密,并且根据CDMA技术进行编码,以便通过ADSL信道与信息大致同时传输。 编码密钥和DMT数据子块从安全传输中恢复。 编码密钥根据CDMA技术被解码以产生解码的密钥。 解码的密钥用于向数据的子块分配一个顺序。

    Method for using spreading code sequency to achieve high bit densities
in a direct-sequence spread spectrum communication system
    18.
    发明授权
    Method for using spreading code sequency to achieve high bit densities in a direct-sequence spread spectrum communication system 失效
    在直接序列扩频通信系统中使用扩展码序列来实现高比特密度的方法

    公开(公告)号:US6134263A

    公开(公告)日:2000-10-17

    申请号:US2646

    申请日:1998-01-05

    申请人: David M. Horne

    发明人: David M. Horne

    IPC分类号: H04B1/707 H04J13/00 H04J13/10

    摘要: A method for achieving high bit densities in a direct-sequence spread spectrum communication system. The first step is to create a first pseudo-noise code with a given sequency value. The information signal is then spread by modulating the information signal with the pseudo-noise code where the pseudo-noise code used has a sequency value equal to that of the value of the signal. The information signal is then despread and the value of the information signal is determined by the sequency value of the pseudo-noise code used to demodulate the signal.

    摘要翻译: 一种在直接序列扩频通信系统中实现高比特密度的方法。 第一步是创建具有给定顺序值的第一伪噪声码。 然后通过使用伪噪声码调制信息信号来扩展信息信号,其中使用的伪噪声码具有等于信号值的序列值。 然后信息信号被解扩,并且信息信号的值由用于解调信号的伪噪声码的顺序值确定。

    Disc brake friction pad assembly
    19.
    发明授权
    Disc brake friction pad assembly 失效
    盘式制动器摩擦垫组件

    公开(公告)号:US5323882A

    公开(公告)日:1994-06-28

    申请号:US17771

    申请日:1993-02-16

    IPC分类号: F16D65/095 F16D65/00

    CPC分类号: F16D65/095

    摘要: A friction pad assembly and backing plate therefor features a pair of opposing upper and lower abutments, with the engagement surface of the lower abutments being recessed by a predetermined magnitude relative to the engagement surfaces of the upper abutments. The lower abutments are recessed relative to the upper abutments, such that lower abutments will not contact the bracket which supports the friction pad assembly under resting and light braking conditions. However, the lower abutments at the pressured end of the friction pad assembly will come into contact with the caliper bracket during heavy braking conditions in order to reduce the load on the upper abutment. While the force applied by the pad to the bracket support structure under these conditions may cause the un-pressured end of the friction pad assembly to lift slightly, the clearance thereby produced will be too small to cause perceptible clacking noise upon brake release.

    摘要翻译: 摩擦垫组件及其背板具有一对相对的上和下邻接部,下邻接件的接合表面相对于上基台的接合表面凹陷预定的大小。 下部支座相对于上部支座凹进,使得下部支座不会在静止和轻微制动条件下接触支撑摩擦垫组件的支架。 然而,在重制动条件下,摩擦垫组件的加压端处的下邻接件将与卡钳支架接触,以便减小上基台上的载荷。 虽然在这些条件下由垫施加到支架支撑结构的力可能导致摩擦垫组件的未加压端略微升高,但由此产生的间隙将太小而不能在制动器释放时引起可察觉的撞击噪音。

    Method for receiving a secured transmission of information through a plurality of frequency orthogonal subchannels
    20.
    发明授权
    Method for receiving a secured transmission of information through a plurality of frequency orthogonal subchannels 失效
    用于通过多个频率正交子信道接收信息的安全传输的方法

    公开(公告)号:US06683955B1

    公开(公告)日:2004-01-27

    申请号:US09215683

    申请日:1998-12-17

    申请人: David M. Horne

    发明人: David M. Horne

    IPC分类号: H04K110

    CPC分类号: H04K1/04 H04L9/0631

    摘要: One embodiment of the present invention is a method for receiving a secured transmission of information in an ADSL environment using a DMT modulation technique. The order of the frequency orthogonal subchannels used in the DMT technique is scrambled according to a permutation cipher. The key for this scrambling operation is scrambled with the subscriber's public key, and is encoded according to a CDMA technique for transmission through the ADSL channel approximately concurrently with the information. The encoded key and the DMT data subblocks are recovered from the secured transmission. The encoded key is decoded according to the CDMA technique to generate the decoded key. The decoded key is used to assign an order to the subblocks of data.

    摘要翻译: 本发明的一个实施例是一种使用DMT调制技术在ADSL环境中接收信息的安全传输的方法。 在DMT技术中使用的频率正交子信道的顺序根据置换密码进行加扰。 该加扰操作的关键是用用户的公共密钥进行加扰,并且根据CDMA技术进行编码,以便与ADSL信道大致同时地与该信息进行传输。 编码密钥和DMT数据子块从安全传输中恢复。 编码密钥根据CDMA技术被解码以产生解码的密钥。 解码的密钥用于向数据的子块分配一个顺序。