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21. 发明授权

US4481851A Tone generator assignment system for an electronic musical instrument 失效
标题翻译：用于电子乐器的音调发生器分配系统
公开(公告)号：US4481851A
公开(公告)日：1984-11-13
申请号：US275723
申请日：1981-06-22
申请人： Richard S. Swain , Mark Fimoff
发明人： Richard S. Swain , Mark Fimoff
IPC分类号： G10H1/18
CPC分类号： G10H1/186 , Y10S84/02
摘要： An electronic musical instrument includes a keyboard having a plurality of keys, each depressed key being identified by a uniquely developed multibit code. Each of a plurality of tone generators, substantially less in number than the number of keys characterizing the keyboard, is operable in response to each of the multibit codes for producing a tone signal having a frequency corresponding to the pitch of the associated depressed key. Each depressed key is assigned for playing through one of the tone generators by a control circuit, the control circuit being responsive to the condition wherein all of the tone generators have been assigned to previously played keys for assigning a newly played key for playing through the tone generator which was assigned to the oldest released one of the previously played keys.
摘要翻译：电子乐器包括具有多个键的键盘，每个按下的键都由独特显影的多位代码识别。响应于用于产生具有与相关的按下的键的音调相对应的频率的音调信号的每一个，多个音调发生器中的每一个基本上小于表示键盘的键的数量的数量。每个按下的键被分配用于通过控制电路中的一个音调发生器进行播放，该控制电路响应于其中所有音调发生器已被分配给先前播放的键的条件，用于通过该音调分配用于播放的新播放的键发电机被分配到最早发布的一个以前播放的键。

22. 发明授权

US08576898B2 SLOC spot monitoring 有权
标题翻译： SLOC现场监控
公开(公告)号：US08576898B2
公开(公告)日：2013-11-05
申请号：US12698041
申请日：2010-02-01
申请人： Khanh Lam , Mark Fimoff , Greg Tomezak , Dennis Mutzabaugh
发明人： Khanh Lam , Mark Fimoff , Greg Tomezak , Dennis Mutzabaugh
IPC分类号： H04B1/38
CPC分类号： H04L27/01 , H04L25/022 , H04L25/03159 , H04L27/34 , H04N21/42607
摘要： Systems and methods for controlling transmission of signals are described. A camera-side modem is configured to receive two signals from a video camera and to extract a received passband signal from a transmission line. A detector in the camera-side modem generates an enable signal when the received passband signal is identified. The enable signal is used to control transmission of at least one of the baseband video signal and the passband video signal. The passband signal may be identified by an estimate of mean square error in a quadrature amplitude demodulator, a measurement of reliability provided by a constellation detector, a measurement of reliability based on a sequence of frame synchronizations and/or an estimate of mean square error in an equalizer. The detector may monitor a gain factor in an automatic gain control module of the camera-side modem and/or a magnitude of the received passband signal.
摘要翻译：描述了用于控制信号传输的系统和方法。相机侧调制解调器被配置为从摄像机接收两个信号并且从传输线提取接收的通带信号。当接收到的通带信号被识别时，相机侧调制解调器中的检测器产生使能信号。使能信号用于控制基带视频信号和通带视频信号中的至少一个的传输。可以通过正交幅度解调器中的均方误差的估计，星座检测器提供的可靠性测量，基于帧同步序列的可靠性测量和/或均方误差估计来识别通带信号均衡器检测器可以监视相机侧调制解调器的自动增益控制模块中的增益因子和/或接收到的通带信号的幅度。

23. 发明申请

US20100322348A1 CONSTELLATION DETECTION IN A MULTI-MODE QAM COMMUNICATIONS SYSTEM 有权
标题翻译：多模式QAM通信系统中的智能检测
公开(公告)号：US20100322348A1
公开(公告)日：2010-12-23
申请号：US12698066
申请日：2010-02-01
申请人： Greg Tomezak , Mark Fimoff
发明人： Greg Tomezak , Mark Fimoff
IPC分类号： H04L27/36
CPC分类号： H04L27/01 , H04L25/022 , H04L25/03159 , H04L27/34 , H04N21/42607
摘要： Systems and methods for determining an unknown QPSK or QAM constellation from a set of possible received constellations are described. One method utilizes a histogram of the power of the signal after inter-symbol-interference has been minimized with a modified constant modulus algorithm equalizer. The constellation may be determined before carrier frequency and phase has been fully recovered. An unknown QPSK or QAM constellation may be identified before or after equalization using disclosed methods for analyzing an output power histogram.
摘要翻译：描述了从一组可能的接收星座中确定未知QPSK或QAM星座的系统和方法。一种方法利用改进的恒模算法均衡器使符号间干扰已被最小化之后的信号功率的直方图。可以在载波频率和相位完全恢复之前确定星座。可以使用公开的用于分析输出功率直方图的方法在均衡之前或之后识别未知QPSK或QAM星座。

24. 发明申请

US20100322297A1 CARRIER PHASE OFFSET CORRECTION FOR A QAM SYSTEM 有权
标题翻译： QAM系统的载波相位偏差校正
公开(公告)号：US20100322297A1
公开(公告)日：2010-12-23
申请号：US12698071
申请日：2010-02-01
申请人： Mark Fimoff , Jinghua Jin , Greg Tomezak
发明人： Mark Fimoff , Jinghua Jin , Greg Tomezak
IPC分类号： H04L27/34 , H04B1/38
CPC分类号： H04L27/01 , H04L25/022 , H04L25/03159 , H04L27/34 , H04N21/42607
摘要： Systems and methods are described that may be used to detect and correct carrier phase offset in a signal. A phase offset corrector receives an equalized signal representative of a quadrature amplitude modulated signal and derives a phase-corrected signal from the equalized signal. The equalized signal is sliced to obtain real and imaginary sequences and a frame synchronizer performs a correlation of the real and imaginary sequences with corresponding parts of a stored frame-sync pseudo-random sequence. Phase correction is based on the maximum real and imaginary values of the correlation. The signal is typically quadrature amplitude modulated signal is modulated using punctured trellis codes. Quadrature phase shift keying modulation, 16-QAM, 64-QAM and other QAM schemes may be used.
摘要翻译：描述了可用于检测和校正信号中的载波相位偏移的系统和方法。相位偏移校正器接收表示正交幅度调制信号的均衡信号，并从均衡信号导出相位校正信号。均衡信号被分片以获得实数和虚数序列，并且帧同步器执行实序列和虚数序列与存储的帧同步伪随机序列的相应部分的相关性。相位校正基于相关的最大实数和虚数值。该信号通常是使用穿孔网格码进行调制的正交幅度调制信号。可以使用正交相移键控调制，16-QAM，64-QAM和其他QAM方案。

25. 发明申请

US20080092012A1 ROBUST DIGITAL COMMUNICATION SYSTEM 有权
公开(公告)号：US20080092012A1
公开(公告)日：2008-04-17
申请号：US11931357
申请日：2007-10-31
申请人： Wayne Bretl , Richard Citta , Mark Fimoff
发明人： Wayne Bretl , Richard Citta , Mark Fimoff
IPC分类号： G06F11/07
CPC分类号： H04L25/03312 , H03M13/253 , H03M13/256 , H03M13/2732 , H03M13/2936 , H03M13/2957 , H03M13/6331 , H04L1/0041 , H04L1/0047 , H04L1/0054 , H04L1/0057 , H04L1/006 , H04L1/0065 , H04L1/007 , H04L1/0071 , H04L25/03267 , H04L25/03318 , H04L25/063 , H04L25/497 , H04L27/02 , H04L27/066 , H04L2025/03382 , H04N5/04 , H04N5/4401 , H04N5/455 , H04N21/23614 , H04N21/2383 , H04N21/4348 , H04N21/4382
摘要： Normally ordered robust VSB data are reordered in accordance with a first interleave to produce reordered robust VSB data. The reordered robust VSB data and ATSC data are reordered in accordance with a second interleave to produce normally ordered robust VSB data and reordered ATSC data. The normally ordered robust VSB data and reordered ATSC data are time multiplexed for transmission to a receiver. The receiver discards the reordered ATSC data or the normally ordered robust VSB data depending upon receiver type or user selection. A robust VSB receiver is able to process the normally ordered robust VSB data upstream of an outer decoder without an interleave thereby avoiding the delay associated with an interleave.

26. 发明申请

US20080089415A1 ROBUST DIGITAL COMMUNICATION SYSTEM 有权
公开(公告)号：US20080089415A1
公开(公告)日：2008-04-17
申请号：US11930746
申请日：2007-10-31
申请人： Wayne Bretl , Richard Citta , Mark Fimoff
发明人： Wayne Bretl , Richard Citta , Mark Fimoff
IPC分类号： H04N7/24
CPC分类号： H04L25/03312 , H03M13/253 , H03M13/256 , H03M13/2732 , H03M13/2936 , H03M13/2957 , H03M13/6331 , H04L1/0041 , H04L1/0047 , H04L1/0054 , H04L1/0057 , H04L1/006 , H04L1/0065 , H04L1/007 , H04L1/0071 , H04L25/03267 , H04L25/03318 , H04L25/063 , H04L25/497 , H04L27/02 , H04L27/066 , H04L2025/03382 , H04N5/04 , H04N5/4401 , H04N5/455 , H04N21/23614 , H04N21/2383 , H04N21/4348 , H04N21/4382
摘要： Normally ordered robust VSB data are reordered in accordance with a first interleave to produce reordered robust VSB data. The reordered robust VSB data and ATSC data are reordered in accordance with a second interleave to produce normally ordered robust VSB data and reordered ATSC data. The normally ordered robust VSB data and reordered ATSC data are time multiplexed for transmission to a receiver. The receiver discards the reordered ATSC data or the normally ordered robust VSB data depending upon receiver type or user selection. A robust VSB receiver is able to process the normally ordered robust VSB data upstream of an outer decoder without an interleave thereby avoiding the delay associated with an interleave.

27. 发明授权

US07327790B1 MPEG on screen display coder for DTV interfaces 有权
标题翻译：用于DTV接口的MPEG屏幕显示编码器
公开(公告)号：US07327790B1
公开(公告)日：2008-02-05
申请号：US09330769
申请日：1999-06-11
申请人： Wayne E. Bretl , Mark Fimoff , Paul A. Snopko
发明人： Wayne E. Bretl , Mark Fimoff , Paul A. Snopko
IPC分类号： H04N7/18
CPC分类号： H04N5/44508 , H04N21/4316 , H04N21/4383 , H04N21/4402
摘要： An MPEG on-screen display coder includes a buffer, an MPEG encoder, and a multiplexer. The buffer receives and buffers an MPEG transport data stream containing frames of a selected program and frames of a non-selected program. The MPEG encoder encodes frames of the selected program with an on-screen display. The multiplexer selectively passes to a digital television receiver the frames of the non-selected program, the encoded frames of the selected program, and original frames of the selected program.
摘要翻译： MPEG屏幕显示编码器包括缓冲器，MPEG编码器和多路复用器。缓冲器接收并缓冲包含所选节目的帧和未选择节目的帧的MPEG传输数据流。 MPEG编码器通过屏幕显示对所选程序的帧进行编码。复用器选择性地向数字电视接收机传递未选择节目的帧，所选节目的编码帧以及所选节目的原始帧。

28. 发明授权

US07313182B2 Decision feedback equalizers with constrained feedback taps for reduced error propagation 有权
标题翻译：具有约束反馈抽头的判决反馈均衡器，用于减少误差传播
公开(公告)号：US07313182B2
公开(公告)日：2007-12-25
申请号：US10804706
申请日：2004-03-19
申请人： Mark Fimoff , William J. Hillery , Michael D. Zoltowski
发明人： Mark Fimoff , William J. Hillery , Michael D. Zoltowski
IPC分类号： H03H7/40
CPC分类号： H04L25/03057 , H04L2025/0349 , H04L2025/03605 , H04L2025/03681
摘要： Constrained tap weights of a decision feedback equalizer are determined according to the channel impulse response of a channel and a constraint function. The constraint function is differentiable and is an approximation of a non-differentiable tap weight constraint function. The tap weight constraint function may have a constraint value M that is a function of a mean squared error of the estimated mean squared error at the output of the decision feedback equalizer.
摘要翻译：根据信道的信道脉冲响应和约束函数确定判决反馈均衡器的约束抽头权重。约束函数是可微分的，并且是不可微分的抽头权重约束函数的近似。抽头权重约束函数可以具有作为判决反馈均衡器的输出处的估计均方误差的均方误差的函数的约束值M。

29. 发明授权

US07289580B2 Channel estimator using one or more correlation reference vectors to eliminate data related noise 有权
标题翻译：信道估计器使用一个或多个相关参考向量来消除数据相关噪声
公开(公告)号：US07289580B2
公开(公告)日：2007-10-30
申请号：US10267242
申请日：2002-10-09
申请人： Christopher J. Pladdy , Mark Fimoff , Sreenivasa M. Nerayanuru , Serdar Ozen , Michael D. Zoltowski
发明人： Christopher J. Pladdy , Mark Fimoff , Sreenivasa M. Nerayanuru , Serdar Ozen , Michael D. Zoltowski
IPC分类号： H04L27/06
CPC分类号： H04L25/0212 , H04L25/0224
摘要： An impulse response of a channel is estimated by correlating a received signal with a stored vector. The received signal contains a training sequence having a length Ltr, the stored vector has a length Lsv, Ltr/n=Lsv, and n is greater than two. The signal is received by a device. The vector is determined based on the training sequence and an ideal channel. The ideal channel is an idealized form of a channel through which the device receives the signal. A plurality of correlations may be performed where each correlation provides a substantially noise-free estimate of the impulse response of a different portion of the channel. The correlations are combined to provide an estimate of the impulse response of the channel.
摘要翻译：通过将接收的信号与存储的矢量相关联来估计信道的脉冲响应。所接收的信号包含具有长度L 的训练序列，所存储的矢量具有长度L sv，L，tr，/ L，L， SUB> sv ，n大于2。信号由设备接收。基于训练序列和理想信道确定向量。理想的通道是设备接收信号的通道的理想形式。可以执行多个相关性，其中每个相关性提供对信道的不同部分的脉冲响应的基本上无噪声的估计。相关性被组合以提供信道的脉冲响应的估计。

30. 发明申请

US20070189423A1 ADAPTIVE THRESHOLDING ALGORITHM FOR THE NOISE DUE TO UNKNOWN SYMBOLS IN CORRELATION BASED CHANNEL IMPULSE RESPONSE (CIR) ESTIMATE 有权
标题翻译：基于相关通道冲突响应（CIR）估计的未知符号的噪声的自适应阈值算法
公开(公告)号：US20070189423A1
公开(公告)日：2007-08-16
申请号：US11690560
申请日：2007-03-23
申请人： Mark Fimoff , Sreenivasa Nerayanuru , Christopher Pladdy
发明人： Mark Fimoff , Sreenivasa Nerayanuru , Christopher Pladdy
IPC分类号： H04L27/06
CPC分类号： H04L25/0218
摘要： An impulse response is estimated for a channel by estimating an intermediate impulse response of the channel. The intermediate impulse response comprises at least one multipath spike and one or more non-deterministic noise components at locations throughout the channel Then, a threshold function is applied to the estimated intermediate impulse response across at least a portion of the channel in order to provide an estimated final impulse response of the channel. The threshold function has the effect of nulling the noise components of the channel having values less than the threshold function at the location within the channel of the respective noise component, and the threshold function is characterized by a level that varies across the portion of the channel from a minimum value to a maximum value in a manner determined by the location of the at least one multipath spike within the channel.
摘要翻译：通过估计信道的中间脉冲响应来估计信道的脉冲响应。中间脉冲响应包括在整个信道的位置处的至少一个多路径尖峰和一个或多个非确定性噪声分量。然后，阈值函数被应用于跨信道的至少一部分的估计的中间脉冲响应，以便提供估计通道的最终脉冲响应。阈值函数具有使在各个噪声分量的信道内的位置处具有小于阈值函数的信道的噪声分量归零的效果，并且阈值函数的特征在于在信道的整个部分上变化的电平以由通道内的至少一个多径峰值的位置确定的方式从最小值到最大值。

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