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1. 发明授权

US08068536B2 Orthogonal frequency division multiplexing (OFDM) digital radio frequency (RF) transceiver 有权
标题翻译：正交频分复用（OFDM）数字射频（RF）收发器
公开(公告)号：US08068536B2
公开(公告)日：2011-11-29
申请号：US10572714
申请日：2003-09-25
申请人： David Lowell McNeely
发明人： David Lowell McNeely
IPC分类号： H04B1/38 , H04L5/16
CPC分类号： H04L27/2649 , H04L27/2627
摘要： A digital radio frequency (RF) transceiver circuit comprises circuitry that is adapted to select between a transmitter input signal (148) and a receiver input signal. A plurality of filters are adapted to receive either the transmitter input signal or the receiver input signal and to produce either a filtered transmitter signal or a filtered receiver signal. Circuitry alternatively receives the filtered transmitter signal or the filtered receiver signal and produces a modulated output and a demodulated output.
摘要翻译：数字射频（RF）收发器电路包括适于在发射机输入信号（148）和接收机输入信号之间进行选择的电路。多个滤波器适于接收发射机输入信号或接收机输入信号，并产生经滤波的发射机信号或经滤波的接收机信号。电路交替地接收经滤波的发射机信号或经滤波的接收机信号，并产生调制输出和解调输出。

2. 发明授权

US07292638B2 Transform-based alias cancellation multi-channel tuner 有权
标题翻译：基于变换的别名取消多通道调谐器
公开(公告)号：US07292638B2
公开(公告)日：2007-11-06
申请号：US10428973
申请日：2003-05-02
申请人： David Lowell McNeely
发明人： David Lowell McNeely
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L27/28 , H04L27/2647
摘要： A satellite receiver includes a signal cancellation tuner for processing a plurality of different transponder signals to simultaneously provide a plurality of different bit streams. The signal cancellation tuner includes (a) a demultiplexer for demultiplexing a received signal representing the plurality of transponder signals into a number of decimated signals, each transponder signal conveying a bit stream, and (b) a transform element operative on the number of decimated signals for providing at least two of the bitstreams simultaneously.
摘要翻译：卫星接收机包括用于处理多个不同的应答器信号以同时提供多个不同比特流的信号消除调谐器。信号消除调谐器包括：（a）解复用器，用于将表示多个转发器信号的接收信号解复用为多个抽取信号，每个应答器信号传送比特流，以及（b）对抽取信号数量进行操作的变换元件用于同时提供至少两个比特流。

3. 发明授权

US07054281B2 Multi-channel tuner using a discrete cosine transform 有权
标题翻译：使用离散余弦变换的多通道调谐器
公开(公告)号：US07054281B2
公开(公告)日：2006-05-30
申请号：US10428614
申请日：2003-05-02
申请人： David Lowell McNeely
发明人： David Lowell McNeely
IPC分类号： H04B7/185
CPC分类号： G06F17/147 , H04B7/18515 , H04L5/06
摘要： A satellite receiver includes a multi-channel tuner for processing a plurality of different transponder signals to simultaneously provide a plurality of different bit streams from at least two of the transponder signals. The multi-channel tuner includes (a) a demultiplexer for demultiplexing a received signal representing the plurality of transponder signals into a plurality of sample signals, each transponder signal conveying a bit stream, (b) a plurality of bifurcated filters operative on the plurality of sample signals for providing a plurality of filtered signals, and (c) a discrete cosine transform element operative on the plurality of filtered signals for simultaneously providing at least two of the bitstreams.
摘要翻译：卫星接收机包括用于处理多个不同的应答器信号以同时从至少两个应答器信号提供多个不同比特流的多通道调谐器。多通道调谐器包括：（a）解复用器，用于将表示多个应答器信号的接收信号解复用为多个采样信号，每个应答器信号传送位流，（b）多个分叉滤波器，用于提供多个滤波信号的采样信号，以及（c）在多个滤波信号上操作的离散余弦变换元件，用于同时提供至少两个比特流。

4. 发明授权

US06597750B1 Opposite polarization interference cancellation in satellite communication 有权
标题翻译：卫星通信中的相反极化干扰消除
公开(公告)号：US06597750B1
公开(公告)日：2003-07-22
申请号：US09423868
申请日：1999-11-15
申请人： Paul Gothard Knutson , Kumar Ramaswamy , David Lowell McNeely
发明人： Paul Gothard Knutson , Kumar Ramaswamy , David Lowell McNeely
IPC分类号： H04B710
CPC分类号： H04B7/18513 , H04B7/002 , H04B7/18523 , H04L1/02 , H04L5/04
摘要： A system for receiving a plurality of broadcast channels transmitted with different polarizations includes a first demodulator for demodulating a first channel having a first polarization to produce a first demodulated channel signal, and a second demodulator for demodulating a second channel having a second polarization, opposite to the first polarization, to produce a second demodulated channel signal. An adaptive interference cancellation network, coupled to the first and second demodulators, cancels interference, derived from the second channel, in the first demodulated channel signal to produce a received signal.
摘要翻译：用于接收以不同极化发送的多个广播信道的系统包括：第一解调器，用于解调具有第一极化的第一信道以产生第一解调信道信号;以及第二解调器，用于解调具有第二极化的第二信道，第一极化，以产生第二解调通道信号。耦合到第一和第二解调器的自适应干扰消除网络在第一解调信道信号中消除从第二信道导出的干扰，以产生接收信号。

5. 发明申请

US20100067431A1 Apparatus and method for re-synthesizing signals 有权
标题翻译：用于重新合成信号的装置和方法
公开(公告)号：US20100067431A1
公开(公告)日：2010-03-18
申请号：US11919408
申请日：2006-05-04
申请人： David Lowell McNeely
发明人： David Lowell McNeely
IPC分类号： H04K1/10 , H04B7/185
CPC分类号： H04B7/18526
摘要： The disclosed embodiments relate to an apparatus and a method for re-synthesizing signals. The apparatus includes a receiver for receiving a plurality of digitally multiplexed signals, each digitally multiplexed signal associated with a different physical transmission channel, and for simultaneously recovering from at least two of the digital multiplexes a plurality of bit streams. The apparatus also includes a transmitter for inserting the plurality of bit streams into different digital multiplexes and for modulating the different digital multiplexes for transmission on different transmission channels. The method involves receiving a first signal having a plurality of different program streams in different frequency channels, selecting a set of program streams from the plurality of different frequency channels, combining the set of program streams to form a second signal, and transmitting the second signal.
摘要翻译：所公开的实施例涉及用于重新合成信号的装置和方法。该装置包括用于接收多个数字多路复用信号的接收机，每个数字复用的信号与不同的物理传输信道相关联，并且用于同时从多个位流中的至少两个数字复用复原。该装置还包括用于将多个比特流插入到不同的数字多路复用中并用于调制不同数字多路复用以在不同传输信道上传输的发射机。该方法涉及在不同频率信道中接收具有多个不同节目流的第一信号，从多个不同频率信道中选择一组节目流，组合该组节目流以形成第二信号，并发送第二信号。

6. 发明授权

US07072418B2 Method and apparatus for performing Nyquist folding frequency modulation 失效
标题翻译：用于执行奈奎斯特折叠频率调制的方法和装置
公开(公告)号：US07072418B2
公开(公告)日：2006-07-04
申请号：US10061102
申请日：2002-02-01
申请人： David Lowell McNeely
发明人： David Lowell McNeely
IPC分类号： H04L27/04 , H04L27/12 , H04L27/20
CPC分类号： H03D7/16
摘要： A method and apparatus for re-modulating an RF carrier modulated signal using a Nyquist folding frequency modulation technique. The method modulates a digitized RF carrier modulated signal with a digital sequence of {1,−1,1,−1, . . . }, where the center frequency of the RF carrier modulated signal is at a first frequency and the sample rate of the modulating signal is at a second frequency. When the second frequency is four times the first frequency, the output of the digital modulation process is a spectrum-inverted copy of the source RF carrier modulated signal. For all other frequencies, the remodulated RF carrier modulated signal has a center frequency equal to the carrier frequency minus one-half the sample rate of the modulating signal. A spectrum inversion is then performed to recreate the spectrum of the source RF carrier modulated signal, which is now located at a different center frequency. The apparatus comprises a modulating signal source and a digital modulator. A resampler and a spectrum inverter may be used as needed.
摘要翻译：一种使用奈奎斯特折叠频率调制技术对RF载波调制信号进行再调制的方法和装置。该方法用数字序列{1，-1,1，-1，...）调制数字化的RF载波调制信号。。。 }，其中RF载波调制信号的中心频率处于第一频率，并且调制信号的采样率处于第二频率。当第二频率是第一频率的四倍时，数字调制处理的输出是源RF载波调制信号的频谱反转副本。对于所有其他频率，重调制的RF载波调制信号的中心频率等于载波频率减去调制信号的采样率的一半。然后执行频谱反转，以重建现在位于不同中心频率的源RF载波调制信号的频谱。该装置包括调制信号源和数字调制器。可以根据需要使用重采样器和频谱逆变器。

7. 发明授权

US06313772B1 Complex carrier signal generator for determining cyclic wave shape 失效
标题翻译：用于确定循环波形的复载波信号发生器
公开(公告)号：US06313772B1
公开(公告)日：2001-11-06
申请号：US09382234
申请日：1999-08-24
申请人： David Lowell McNeely
发明人： David Lowell McNeely
IPC分类号： H03M300
CPC分类号： H04N5/40 , H04L27/02 , H04N5/4401 , H04N5/455
摘要： A method for generating digital carrier signals for application as the carrier to a digital modulator includes providing a first repeating sequence of complex values occurring at a given sample rate and upsampling these values to a higher sample rate. A second repeating sequence of complex values is provided, wherein respective complex values in the second repeating sequence occur at the higher sample rate. The second sequence of complex values is employed to modulate the upsampled first sequence of complex values and thereby provide the complex carrier signal.
摘要翻译：一种用于产生用作数字调制解调器的载波的数字载波信号的方法包括提供以给定采样速率发生的复数值的第一重复序列，并将这些值上采样到更高采样率。提供了复数值的第二重复序列，其中第二重复序列中的相应复数值以更高的采样速率发生。采用第二个复数序列来调制上采样的第一复数值序列，从而提供复载波信号。

8. 发明授权

US07123652B1 Sampled data digital filtering system 有权
标题翻译：采样数据数字滤波系统
公开(公告)号：US07123652B1
公开(公告)日：2006-10-17
申请号：US09415654
申请日：1999-10-12
申请人： David Lowell McNeely
发明人： David Lowell McNeely
IPC分类号： H03K5/159 , H03M7/00
CPC分类号： H03H17/0621 , H03H17/0009
摘要： A digital filtering system for filtering sample data includes a delay network for delaying input sample data to provide multiple delayed sample data outputs. The filtering system also includes a filter network represented by a decomposed coefficient weighting matrix for processing the delayed sample data outputs. A processor produces a filtered output by computing a weighted product summation of the delayed sample data outputs and the coefficient weighting matrix. The decomposed coefficient weighting matrix is derived by factoring a first coefficient weighting matrix with a common row factor and/or sparse matrix or by factoring based on matrix row or column symmetry.
摘要翻译：用于过滤采样数据的数字滤波系统包括用于延迟输入采样数据以提供多个延迟采样数据输出的延迟网络。滤波系统还包括由分解的系数加权矩阵表示的滤波器网络，用于处理延迟的采样数据输出。处理器通过计算延迟采样数据输出和系数加权矩阵的加权乘积求和来产生滤波输出。通过用公共行因子和/或稀疏矩阵分解第一系数加权矩阵或通过基于矩阵行或列对称的因式分解来导出分解系数加权矩阵。

9. 发明授权

US06873368B1 Low noise encoding and decoding method 有权
标题翻译：低噪声编解码方式
公开(公告)号：US06873368B1
公开(公告)日：2005-03-29
申请号：US09555488
申请日：1997-12-23
申请人： Haoping Yu , David Lowell McNeely , Billy Wesley Beyers, Jr.
发明人： Haoping Yu , David Lowell McNeely , Billy Wesley Beyers, Jr.
IPC分类号： H04N7/26 , H04N7/46 , H04N7/50 , H04N11/02 , H04N7/04 , H04N7/24 , H04N11/20
CPC分类号： H04N21/440263 , H04N7/0112 , H04N19/117 , H04N19/42 , H04N19/59 , H04N19/61 , H04N19/85 , H04N21/234363
摘要： An adaptive digital image processor precedes an MPEG2 encoder. The processor receives a high definition video signal intended for broadcast or storage, and adaptively low-pass filters the signal. The signal is subjected to low-pass two-dimensional filtering to eliminate encoding artifacts and related noise. The video signal is then horizontally down-sampled to create a lower resolution hybrid signal. A receiver decodes and decompresses the hybrid signal. The hybrid signal is upsampled to its original resolution using existing hardware and software with a software modification.
摘要翻译：自适应数字图像处理器位于MPEG2编码器之前。处理器接收用于广播或存储的高分辨率视频信号，并且自适应地对信号进行低通滤波。该信号经受低通二维滤波以消除编码伪像和相关噪声。然后将视频信号水平下采样以产生较低分辨率的混合信号。接收机解码和解压缩混合信号。混合信号通过软件修改使用现有的硬件和软件上采样到其原始分辨率。

10. 发明授权

US06310566B1 Digital data sample rate conversion system with delayed interpolation 有权
标题翻译：具有延迟插值的数字采样率转换系统
公开(公告)号：US06310566B1
公开(公告)日：2001-10-30
申请号：US09415655
申请日：1999-10-12
申请人： David Lowell McNeely
发明人： David Lowell McNeely
IPC分类号： H03M700
CPC分类号： H03H17/0657
摘要： A sample rate conversion system converts data of a first sample rate to data of a different second sample rate. The system involves an interpolator, operating at the first sample rate and includes a first interpolation network and a delay network. The first interpolation network interpolates the first sample rate data to provide upsampled interpolated data samples according to a first sample spacing. The delay network interpolates the upsampled interpolated data to provide delayed upsampled interpolated data samples, according to a second sample spacing of higher resolution than the first sample spacing, and preceding and succeeding an original sample position. The system also includes a digital filter operating at the second sample rate for filtering the higher resolution data samples to provide the second sample rate data.
摘要翻译：采样率转换系统将第一采样率的数据转换成不同的第二采样率的数据。该系统包括以第一采样率操作的内插器，并且包括第一内插网络和延迟网络。第一内插网络内插第一采样率数据，以根据第一采样间隔提供上采样的内插数据采样。延迟网络根据比第一采样间隔更高分辨率的第二样本间隔，以及在原始采样位置之前和之后内插内插经上采样的内插数据以提供延迟上采样内插数据样本。该系统还包括以第二采样率操作的数字滤波器，用于对较高分辨率数据样本进行滤波以提供第二采样率数据。

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