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1. 发明授权

US06724178B1 Measuring composite distortion using a coherent multicarrier signal generator 有权
标题翻译：使用相干多载波信号发生器测量复合失真
公开(公告)号：US06724178B1
公开(公告)日：2004-04-20
申请号：US09464014
申请日：1999-12-15
申请人： Ron D. Katznelson
发明人： Ron D. Katznelson
IPC分类号： G01R2300
CPC分类号： G01R23/20 , G01R31/2822 , H04L25/0212 , H04L25/0226
摘要： A method for measuring composite distortion levels using a coherent multicarrier RF signal generator having incrementally related frequencies is disclosed. The invention provides for the use of a coherent multicarrier signal generator that permits arbitrary RF carrier phase control on an individual carrier basis in order to enable sequential distortion measurements under varying carrier phase conditions. In order to obtain measurement results that match those obtained by the use of prior art non-coherent signal sources, the present invention provides for averaging of distortion measurement results over a ‘phase configuration ensemble’ that is obtained by multiple sequential measurements, in which the individual carrier phases for each measurement are preselected at random. The advantages afforded by the invention in comparison with prior art methods are improved repeatability and accuracy, reduction of the required measurement resolution bandwidths (from 30 kHz to as low as 30 Hz) thereby the reduction of noise levels by 30 dB. This feature greatly improves the measurement system's dynamic range and permits the elimination of overload protection preselector filters that are commonly used in prior art non-coherent measurement systems.
摘要翻译：公开了一种使用具有递增相关频率的相干多载波RF信号发生器来测量复合失真电平的方法。本发明提供使用相干多载波信号发生器，其允许基于单个载波的任意RF载波相位控制，以便能够在变化的载波相位条件下进行顺序失真测量。为了获得与通过使用现有技术的非相干信号源获得的匹配的测量结果，本发明提供了通过多个连续测量获得的“相位配置集”的失真测量结果的平均，其中每个测量的单个载波相位是随机预选的。与现有技术相比，本发明提供的优点是提高了重复性和精度，降低了所需的测量分辨率带宽（从30kHz到低至30Hz），从而将噪声水平降低了30dB。该功能大大提高了测量系统的动态范围，并且可以消除现有技术非相干测量系统中常用的过载保护预选器滤波器。

2. 发明授权

US06175630B1 Method and apparatus for level and phase control of a plurality of RF signals 失效
标题翻译：用于多个RF信号的电平和相位控制的方法和装置
公开(公告)号：US06175630B1
公开(公告)日：2001-01-16
申请号：US09236765
申请日：1999-01-25
申请人： Ron D. Katznelson
发明人： Ron D. Katznelson
IPC分类号： H04N538
CPC分类号： H04N7/165
摘要： A multichannel television access control system is disclosed wherein processing of the broadband signal is performed by gated coherent RF injection on a plurality of channels, thereby effecting selective descrambling of an arbitrary subset of channels in a channel group. The system provides for a closed loop injection signal phasor control so as to maintain substantially constant relationship between the television signals and the injected signals. The combined signals are supplied to subscribers enabling the use of their cable ready equipment.
摘要翻译：公开了一种多通道电视接入控制系统，其中宽带信号的处理是通过多个信道上的门控相干RF注入进行的，从而对通道组中的任意信道子集进行选择性的解扰。该系统提供闭环注入信号相量控制，以便在电视信号和注入的信号之间保持基本恒定的关系。将组合的信号提供给订户，使得能够使用其有线就绪设备。

3. 发明授权

US5125100A Optimal signal synthesis for distortion cancelling multicarrier systems 失效
标题翻译：用于失真消除多媒体系统的最佳信号合成
公开(公告)号：US5125100A
公开(公告)日：1992-06-23
申请号：US547927
申请日：1990-07-02
申请人： Ron D. Katznelson
发明人： Ron D. Katznelson
IPC分类号： H04H20/78 , H04L27/26 , H04N7/08 , H04N7/10
CPC分类号： H04N7/102 , H04H20/78 , H04L27/2618 , H04L27/2626 , H04N7/08
摘要： A system and method for minimizing peak amplitudes and distortion in a communication system generating a composite signal. The present invention provides and maintains optimum phase conditions and a near-optimal set of auxiliary carriers in a closed-loop feedback system. An application to community antenna television (CATV) is disclosed.
摘要翻译：一种用于最小化产生复合信号的通信系统中的峰值振幅和失真的系统和方法。本发明在闭环反馈系统中提供和维持最佳相位条件和近似最佳的辅助载波集合。公开了一种应用于社区天线电视（CATV）的应用。

4. 发明授权

US5091936A System for communicating television signals or a plurality of digital audio signals in a standard television line allocation 失效
标题翻译：用于在标准电视线路分配中传送电视信号或多个数字音频信号的系统
公开(公告)号：US5091936A
公开(公告)日：1992-02-25
申请号：US647827
申请日：1991-01-30
申请人： Ron D. Katznelson , Paul Moroney , W. Allen Shumate
发明人： Ron D. Katznelson , Paul Moroney , W. Allen Shumate
IPC分类号： H04H20/33 , H04H60/23 , H04K1/00 , H04N7/04
CPC分类号： H04N7/04 , H04H20/103 , H04H60/23 , H04K1/00 , H04H20/33
摘要： A system is provided for selectively transmitting horizontal television lines including video and digital audio components or equivalent digital data lines containing a plurality of audio program signals. A conventional television signal transmission places a digital audio signal in the horizontal blanking interval, followed by analog video information. In accordance with the present invention, the "window" containing the analog video information is replaced with a plurality of digital audio signals that are time division multiplexed within the window. An additional audio channel is placed in the horizontal blanking interval, at the same location the audio is placed when video information is transmitted. Selector switches are provided in the encoder and decoder for processing a composite waveform as either a video signal with an associated audio channel, or as a multiple channel digital audio signal. Independent encryption and decryption of each of the multiple audio channels is provided.
摘要翻译：提供一种用于选择性地发送包括视频和数字音频分量的水平电视线或包含多个音频节目信号的等效数字数据线的系统。传统的电视信号传输将水平消隐间隔中的数字音频信号置于模拟视频信息之后。根据本发明，包含模拟视频信息的“窗口”被在窗口内被时分复用的多个数字音频信号所取代。在发送视频信息时，在音频放置的相同位置处，在水平消隐间隔中放置一个附加音频通道。在编码器和解码器中提供选择器开关，用于将复合波形作为具有相关音频通道的视频信号或作为多声道数字音频信号进行处理。提供了多个音频通道中的每一个的独立加密和解密。

5. 发明授权

US4809274A Digital audio companding and error conditioning 失效
标题翻译：数字音频压扩和错误调节
公开(公告)号：US4809274A
公开(公告)日：1989-02-28
申请号：US091911
申请日：1987-09-04
申请人： Gordon K. Walker , Ron D. Katznelson , Paul Moroney , Karl E. Moerder
发明人： Gordon K. Walker , Ron D. Katznelson , Paul Moroney , Karl E. Moerder
IPC分类号： H04B14/04 , H03G7/00 , H03K7/02 , H03M20060101 , H03M7/30 , H04B1/64 , H04B15/00 , H04H20/88 , H04L1/08 , G06F11/10
CPC分类号： H03G7/007 , H03M7/3053
摘要： A system for companding digital audio signal samples processes the digital audio signal samples to correct errors induced by the compression and expansion processes. These errors are calculated prior to compressing the samples. Such errors are calculated in accordance with a predetermined compression process and a predetermined expansion process; and the digital audio signal samples are corrected in accordance with such calculations prior to compression. The compression process includes providing a 3-bit gain word for a block of 70 samples. The gain word is computed in accordance with the position of the most significant "1" bit in the sample(s) having the peak magnitude. Each individual sample is processed in accordance with the block gain word to compress the sample by reducing the number of magnitude bits. The error calculation process includes calculating an error signal by subtracting a calculated reproduced digital audio signal sample from the digital audio signal sample to be compressed, filtering the error signal by noise-spectral filtering and adding the filtered error signal to the next-providing digital audio signal sample to provide a corrected digital audio signal sample for compression. The error calculation process also includes calculating an error value based upon the effect of using a single gain word for compressing a block of samples. The error value is subtracted from the corrected digital audio signal sample prior to compression. The gain word is forward error corrected by (5,1) encoding to enable detection and correction of both single-bit and double-bit errors in transfer by majority voting. The sign bit and the most significant magnitude bits of the compressed samples are forward error corrected to enable detection and correction of single-bit errors in transfer and to enable detection and concealment of double-bit errors in transfer.
摘要翻译：用于压缩数字音频信号样本的系统处理数字音频信号样本以校正由压缩和扩展过程引起的误差。在压缩样品之前计算这些误差。这样的误差根据预定的压缩处理和预定的扩展处理来计算; 并且在压缩之前根据这样的计算校正数字音频信号样本。压缩过程包括为70个样本的块提供3位增益字。根据具有峰值幅度的采样中最高有效“1”位的位置来计算增益字。根据块增益字来处理每个单独的样本，以通过减少幅度比特数来压缩样本。误差计算处理包括通过从要压缩的数字音频信号样本中减去计算出的再现数字音频信号样本来计算误差信号，通过噪声频谱滤波对误差信号进行滤波，并将滤波后的误差信号加到下一个提供的数字音频信号采样以提供用于压缩的校正数字音频信号样本。误差计算处理还包括基于使用单个增益字来压缩采样块的效果来计算误差值。在压缩之前从校正的数字音频信号样本中减去误差值。增益字是通过（5,1）编码进行前向误差校正，以便通过多数表决来传输单位和双位错误的检测和校正。压缩样本的符号位和最高有效幅度位是前向纠错的，以便能够检测和校正传输中的单位错误，并能够检测和隐藏传输中的双位错误。

6. 发明授权

US6148320A Multichannel digital signal generation method and apparatus 失效
标题翻译：多通道数字信号发生方法及装置
公开(公告)号：US6148320A
公开(公告)日：2000-11-14
申请号：US80621
申请日：1998-05-18
申请人： Ron D. Katznelson
发明人： Ron D. Katznelson
IPC分类号： H03C1/60 , H04J1/00 , H04J1/06 , H04L5/06 , H04N7/12 , H04N7/16 , H04N7/167 , H04N7/169 , H04N7/171
CPC分类号： H04L5/06 , H04N7/08 , H04N7/162 , H04N7/1675 , H04N7/169 , H04N7/1713
摘要： A multichannel television access control system is disclosed wherein processing of the broadband signal is performed by gated coherent RF injection on a plurality of channels, thereby effecting selective descrambling of an arbitrary subset of channels in a channel group. The system provides for a closed loop injection signal phasor control so as to maintain substantially constant relationship between the television signals and the injected signals. The combined signals are supplied to subscribers enabling the use of their cable ready equipment.
摘要翻译：公开了一种多通道电视接入控制系统，其中宽带信号的处理是通过多个信道上的门控相干RF注入进行的，从而对通道组中的任意信道子集进行选择性的解扰。该系统提供闭环注入信号相量控制，以便在电视信号和注入的信号之间保持基本恒定的关系。将组合的信号提供给订户，使得能够使用其有线就绪设备。

7. 发明授权

US5754650A Simultaneous multichannel television access control system and method 失效
标题翻译：同时多路电视门禁系统及方法
公开(公告)号：US5754650A
公开(公告)日：1998-05-19
申请号：US433135
申请日：1995-05-03
申请人： Ron D. Katznelson
发明人： Ron D. Katznelson
IPC分类号： H03C1/60 , H04J1/00 , H04J1/06 , H04L5/06 , H04N7/12 , H04N7/16 , H04N7/167 , H04N7/169 , H04N7/171
CPC分类号： H04L5/06 , H04N7/08 , H04N7/162 , H04N7/1675 , H04N7/169 , H04N7/1713
摘要： A multichannel television access control system is disclosed wherein processing of the broadband signal is performed by gated coherent RF injection on a plurality of channels, thereby effecting selective descrambling of an arbitrary subset of channels in a channel group. The system provides for a closed loop injection signal phasor control so as to maintain substantially constant relationship between the television signals and the injected signals. The combined signals are supplied to subscribers enabling the use of their cable ready equipment.
摘要翻译：公开了一种多通道电视接入控制系统，其中宽带信号的处理是通过多个信道上的门控相干RF注入进行的，从而对通道组中的任意信道子集进行选择性的解扰。该系统提供闭环注入信号相量控制，以便在电视信号和注入的信号之间保持基本恒定的关系。组合的信号被提供给订户，使得能够使用他们的有线就绪设备。

8. 发明授权

US5249294A Determination of time of execution of predetermined data processing routing in relation to occurrence of prior externally observable event 失效
公开(公告)号：US5249294A
公开(公告)日：1993-09-28
申请号：US13246
申请日：1993-02-03
申请人： Roy A. Griffin, III , James N. Esserman , Steven E. Anderson , Steven R. Hart , Ron D. Katznelson
发明人： Roy A. Griffin, III , James N. Esserman , Steven E. Anderson , Steven R. Hart , Ron D. Katznelson
IPC分类号： G06F1/00 , G06F21/00 , G07F7/10
CPC分类号： G07F7/1008 , G06F21/558 , G06F21/75 , G06Q20/341 , G07F7/082 , G06F2221/2123
摘要： Compromise of a predetermined secure data processing routine by a procedure known as a "clock attack" is prevented by a method that inhibits synchronization with externally generated instructions by preventing determination of the time of execution predetermined data processing routine in relation to occurrence of an externally observable event that precedes the execution of the predetermined routine. The method includes the step of (a) randomly varying the duration between the occurrence of the externally observable event and the execution of the predetermined routine. Step (a) includes the steps of (b) executing one or more interim data processing routines between the occurrence of the externally observable event and the execution of the predetermined routine; and (c) randomly varying the duration of said interim routines. Steps (b) and (c) may include the step of (d) randomly assembling m said interim routines for said execution from a group of n stored routines having different durations, wherein m and n are integers, with n being greater than m. Step (d) may include either the step of (e) randomly accessing said m interim routines from a secure memory; or the steps of (f) randomly accessing pointers for said m interim routines from a secure memory; and (g) accessing said m interim routines from a memory in response to said pointers. Step (c) includes the step of (h) randomly varying the duration of the interim routines in response to dynamically processed data that does not repetitively recur each time said interim routines are accessed. The method further includes the steps of (i) monitoring said interim routines to detect whether said interim routines are being tampered with; and (j) preventing the execution of said predetermined routine in response to detecting that said interim routines are being tampered with.

9. 发明授权

US4736420A Video scrambling by segmenting video information lines 失效
标题翻译：通过视频信息线分割视频加扰
公开(公告)号：US4736420A
公开(公告)日：1988-04-05
申请号：US909763
申请日：1986-09-19
申请人： Ron D. Katznelson , Gordon K. Walker , Paul Moroney
发明人： Ron D. Katznelson , Gordon K. Walker , Paul Moroney
IPC分类号： H04K1/06 , H04N7/169 , H04N7/167
CPC分类号： H04N7/1696
摘要： A system for scrambling a video signal having a plurality of horizontal lines, each of which includes a video information portion and a non-video information portion. The scrambling system includes a memory; means for storing the video information portion of each video signal line in the memory; and means for forming scrambled horizontal lines by retrieving each of a plurality of said stored video information lines in a plurality of segments preceded by a non-video segment and separated by non-video segment(s). The retrieval means include means for varying the respective durations of the retrieved video information segments in individual scrambled horizontal lines in accordance with an encryption keystream; and means for varying the total duration of the non-video segments for individual scrambled horizontal lines in accordance with a predetermined timing pattern. A complementary descrambling system also is disclosed.
摘要翻译：一种用于对具有多个水平行的视频信号进行加扰的系统，每个水平行包括视频信息部分和非视频信息部分。加扰系统包括存储器; 用于将每个视频信号线的视频信息部分存储在存储器中的装置; 以及用于通过在由非视频段前面并由非视频段分隔的多个段中检索多个所述存储的视频信息行中的每一个来形成加扰的水平线的装置。检索装置包括用于根据加密密钥流改变检索到的各个加扰水平行中的视频信息段的持续时间的装置; 以及用于根据预定定时模式改变针对各个加扰水平线的非视频段的总持续时间的装置。还公开了补充解扰系统。

10. 发明授权

US07724309B2 Multichannel quadrature modulation 有权
标题翻译：多通道正交调制
公开(公告)号：US07724309B2
公开(公告)日：2010-05-25
申请号：US11935317
申请日：2007-11-05
申请人： Ron D Katznelson
发明人： Ron D Katznelson
IPC分类号： H04N5/38 , H04N5/40
CPC分类号： H04L5/06 , H04N7/08 , H04N7/162 , H04N7/1675 , H04N7/169 , H04N7/1713
摘要： A multichannel television access control system is disclosed wherein processing of the broadband signal is performed by gated coherent RF injection on a plurality of channels, thereby effecting selective descrambling of an arbitrary subset of channels in a channel group. The system provides for a closed loop injection signal phasor control so as to maintain substantially constant relationship between the television signals and the injected signals. The combined signals are supplied to subscribers enabling the use of their cable ready equipment.
摘要翻译：公开了一种多通道电视接入控制系统，其中宽带信号的处理是通过多个信道上的门控相干RF注入进行的，从而对通道组中的任意信道子集进行选择性的解扰。该系统提供闭环注入信号相量控制，以便在电视信号和注入的信号之间保持基本恒定的关系。将组合的信号提供给订户，使得能够使用其有线就绪设备。

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