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1. 发明授权

US06934731B1 Rational frequency synthesizers employing digital commutators 有权
标题翻译：采用数字换向器的合理频率合成器
公开(公告)号：US06934731B1
公开(公告)日：2005-08-23
申请号：US09579847
申请日：2000-05-25
申请人： Ron D. Katznelson
发明人： Ron D. Katznelson
IPC分类号： H03L7/08 , H03L7/16 , G06F1/02
CPC分类号： H03L7/16
摘要： A method and an apparatus are disclosed for digital synthesis of signals having a frequency which is a rational factor n/m times an existing reference or clock frequency, wherein n and m may be large relatively prime integers. The invention provides for the use of a periodic sequence generator having up to N taps which are connected to a cascade of digital commutating multiplexers. The periodic sequence generator and the commutating multiplexers have periodicities fi that are determined by programmable address counters and the choice of N. The resultant signal at the output of the last commutator stage has a spectral frequency component at a desired frequency which is an algebraic sum of the frequencies fi (each taken with either positive or negative signs). One aspect of the invention provides for the use of weighted linear combination of commutator output lines, thereby further aiding in improving its spectral purity performance. The advantage of the embodiments according to the invention is that it incurs very little phase noise degradations, thereby providing for a signal source with phase noise performance essentially equal to that of the reference signal.
摘要翻译：公开了一种用于数字合成信号的方法和装置，该信号的频率是现有参考或时钟频率的n / m倍的理性因子，其中n和m可以是相对较大的整数。本发明提供了使用具有多达N个抽头的周期性序列发生器，其连接到级联的数字换向多路复用器。周期序列发生器和换向多路复用器具有由可编程地址计数器确定的周期性和N的选择。在最后一个换向器级的输出处的所得到的信号具有频谱分量期望频率，其是频率f i i i的代数和（每个采用正或负符号）。本发明的一个方面提供了使用换向器输出线的加权线性组合，从而进一步有助于提高其光谱纯度性能。根据本发明的实施例的优点是它引起非常少的相位噪声降级，由此提供具有基本上等于参考信号的相位噪声性能的信号源。

2. 发明授权

US6121847A Injection locked oscillator automatic frequency centering method and apparatus 失效
标题翻译：注射锁定振荡器自动频率定心方法和装置
公开(公告)号：US6121847A
公开(公告)日：2000-09-19
申请号：US042899
申请日：1998-03-16
申请人： Ron D. Katznelson , Branislav A. Petrovic
发明人： Ron D. Katznelson , Branislav A. Petrovic
IPC分类号： H03L7/24
CPC分类号： H03L7/24
摘要： A method for centering the frequency of an injection locked oscillator or (ILO) includes producing measurements of the magnitude and sign of the phase difference between ILO output signals in response to alternate high level and low level RF drive signals, and tuning the center frequency of the ILO in accordance with the measurements to minimize the phase difference.
摘要翻译：用于使注入锁定振荡器或（ILO）的频率居中的方法包括响应于交替的高电平和低电平RF驱动信号产生国际劳工局输出信号之间的相位差的幅度和符号的测量值，并且调谐中心频率国际劳工组织按照测量最小化相位差。

3. 发明授权

US4998287A Determination of sequential positions of video fields derived from film 失效
标题翻译：确定从电影衍生的视频场的顺序位置
公开(公告)号：US4998287A
公开(公告)日：1991-03-05
申请号：US257712
申请日：1988-10-14
申请人： Ron D. Katznelson , Edward A. Krause
发明人： Ron D. Katznelson , Edward A. Krause
IPC分类号： H04N5/253 , H04N3/36 , H04N5/44 , H04N5/93 , H04N9/11
CPC分类号： H04N7/012 , H04N3/36 , H04N9/11
摘要： A system for determining the sequential position of video fields of a received video signal that was derived from a film having successive image frames in accordance with the 3:2 pulldown method, wherein the video fields are produced at a greater rate than the film frame rate and in a predetermined repetitive sequentially varying relationship to the film frames wherein at predetermined positions in the sequence a video field is identical to the video field that preceded it by the duration of two video fields. The system includes means for delaying each field of the received video signal; means for comparing each received video field with a video field that has been delayed by the duration of two video fields; and means for comparing the results of a successive number of said comparisons with the predetermined sequence to determine when identical fields are located in only said predetermined positions in a sequence of the compared received video fields. A video signal processing system is synchronized by said determination that identical fields are located in only said predetermined positions in a sequence of the compared received video fields, for inserting indications of sequential video field position in the vertical blanking intervals preceding video fields that are received subsequent to said synchronizing determination. A counter times said comparisons of said compared results with the predetermined sequence and provides an indication that the received video fields were not so derived from film when a determination that identical fields are located in only said predetermined positions in a sequence of the compared received video fields, is not made within a predetermined time. This indication is used to set the mode of operation of a system for providing a progressive-scan video display in accordance with whether or not the received video signal was derived from film.
摘要翻译：一种用于确定根据3:2下拉方法从具有连续图像帧的胶片导出的接收到的视频信号的视频场的顺序位置的系统，其中以比胶片帧速率更大的速率产生视频场并且以与胶卷相同的预定的重复顺序变化的关系，其中在序列中的预定位置，视频字段与其前面的两个视频场的持续时间的视频字段相同。该系统包括用于延迟所接收的视频信号的每个场的装置; 用于将每个接收的视频场与已被延迟了两个视频场的持续时间的视频场进行比较的装置; 以及用于将连续数量的所述比较与预定序列的结果进行比较以确定何时相同的字段仅位于比较的接收视频字段的序列中的所述预定位置的装置。视频信号处理系统通过所述确定进行同步，即相同的字段仅位于所比较的接收视频字段的序列中的所述预定位置中，用于在随后接收的视频字段之前的垂直消隐间隔中插入顺序视频字段位置的指示到所述同步确定。计数器将所述比较结果与所述预定序列进行比较，并且当相同的字段仅位于比较的接收视频字段的序列中的所述预定位置的确定时，提供所接收的视频字段不是从胶片导出的指示不在预定时间内进行。该指示用于设置用于根据接收的视频信号是否从胶片导出来提供逐行扫描视频显示的系统的操作模式。

4. 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。

5. 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。

6. 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.

7. 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。

8. 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。

9. 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。

10. 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。

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