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1. 发明授权

US11876659B2 Communication system using shape-shifted sinusoidal waveforms 有权
公开(公告)号：US11876659B2
公开(公告)日：2024-01-16
申请号：US17571243
申请日：2022-01-07
申请人： TeraWave, LLC
发明人： Torsten Schultze
IPC分类号： H04L27/26 , H04L25/03 , H04L27/20 , H04B14/06 , H04L27/38 , H04L5/00 , H04B1/7176 , H04L27/34 , H04L1/00 , H04L25/06 , H04L25/49 , H04L27/36 , H04L27/04
CPC分类号： H04L27/2614 , H04B1/7176 , H04B14/06 , H04L1/0045 , H04L5/0048 , H04L25/03834 , H04L25/069 , H04L25/4921 , H04L27/2017 , H04L27/2602 , H04L27/2618 , H04L27/2623 , H04L27/2627 , H04L27/345 , H04L27/3411 , H04L27/3494 , H04L27/36 , H04L27/366 , H04L27/389 , H04L27/04
摘要： A data communication method in which input digital data is received and encoded into an encoded waveform having zero crossings representative of the input digital data. The encoding includes generating the encoded waveform based upon a continuous piecewise function having sinusoidal components. The continuous piecewise function may be used in generating a plurality of symbol waveforms, each of which occupies a period of the encoded waveform and represents bits of the input digital data. The plurality of symbol waveforms are defined so that a value of a phase offset used in the continuous piecewise function is different for each of the plurality of symbol waveforms, thereby resulting in each symbol waveform having a different zero crossing. An encoded analog waveform is generated from a representation of the encoded waveform and transmitted to a receiver.

2. 发明授权

US09985809B2 Dynamic range of wideband RF front end using delta sigma converters with envelope tracking and injected digitally equalized transmit signal 有权
公开(公告)号：US09985809B2
公开(公告)日：2018-05-29
申请号：US15103310
申请日：2015-11-06
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Timothy J. Talty , Cynthia D. Baringer , Mohiuddin Ahmed , Albert E. Cosand , James Chingwei Li , Peter Petre , Zhiwei A. Xu , Yen-Cheng Kuan
IPC分类号： H04B1/525 , H04L27/00 , H04B14/06 , H03M3/00 , H04B1/18
CPC分类号： H04L27/0002 , H03M3/438 , H03M3/464 , H04B1/18 , H04B1/525 , H04B14/06
摘要： A cellular radio architecture that includes a programmable bandpass sampling radio frequency front-end and an optimized digital baseband. The architecture includes a receiver module having a plurality of signal channels for different frequency bands, where each signal channel in the receiver module includes a receiver delta-sigma modulator that converts analog receive signals to a representative digital signal. The architecture also includes a transmitter module having a transmitter delta-sigma modulator for converting digital data bits to analog transmit signals, where the transmitter module includes a power amplifier and a switch for directing the transmit signals to one of the signal paths. The architecture also includes a dual self-cancellation circuit providing digital and analog cancellation of the transmit signal in the receiver module.

3. 发明授权

US09853843B2 Software programmable, multi-segment capture bandwidth, delta-sigma modulators for flexible radio communication systems 有权
公开(公告)号：US09853843B2
公开(公告)日：2017-12-26
申请号：US15103287
申请日：2015-11-06
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Timothy J. Talty , Cynthia D. Baringer , Mohiuddin Ahmed , Albert E. Cosand , James Chingwei Li , Peter Petre , Zhiwei A. Xu , Yen-Cheng Kuan
IPC分类号： H04B14/04 , H04L27/00 , H04B14/06 , H04B1/525 , H03M3/00 , H04B1/18
CPC分类号： H04L27/0002 , H03M3/438 , H03M3/464 , H04B1/18 , H04B1/525 , H04B14/06
摘要： A cellular radio architecture that includes a multiplexer coupled to an antenna structure and including multiple signal paths, where each signal path includes a bandpass filter that passes a different frequency band than the other bandpass filters and a circulator that provides signal isolation between the transmit signals and the receive signals. The architecture also includes a receiver module having a separate signal channel for each of the signal paths in the multiplexer, where each signal channel in the receiver module includes a receiver delta-sigma modulator that converts analog receive signals to a representative digital signal. The delta-sigma modulator includes an LC filter having a plurality of LC resonator circuits, a plurality of transconductance amplifiers and a plurality of integrator circuits, where a combination of one resonator circuit, transconductance amplifier and integrator circuit represents a two-order stage of the LC filter.

4. 发明授权

US09622181B2 Power efficient, variable sampling rate delta-sigma data converters for flexible radio communication systems 有权
公开(公告)号：US09622181B2
公开(公告)日：2017-04-11
申请号：US15103306
申请日：2015-11-06
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Timothy J. Talty , Cynthia D. Baringer , Mohiuddin Ahmed , Albert E. Cosand , James Chingwei Li , Peter Petre , Zhiwei A. Xu , Yen-Cheng Kuan
IPC分类号： H04W52/02 , H04B14/06 , H04B1/00 , H04B1/04 , H04B1/18 , H04B1/52 , H04B1/3822 , H04B1/40
CPC分类号： H04W52/0261 , H04B1/0007 , H04B1/0057 , H04B1/0483 , H04B1/18 , H04B1/3822 , H04B1/40 , H04B1/52 , H04B14/06 , H04W52/0274 , Y02D70/00 , Y02D70/1224 , Y02D70/1262 , Y02D70/142 , Y02D70/164 , Y02D70/40
摘要： A method for reducing power consumption in a transceiver front-end circuit for a cellular radio. The transceiver circuit includes a receiver module having a delta-sigma modulator that converts analog receive signals to a representative digital signal in an interleaving process, where the delta-sigma modulator includes a low noise amplifier (LNA), an LC filter and a quantizer circuit. The LC filter is a multi-order filter and the quantizer circuit is an interleaving quantizer circuit that interleaves multiple groups of bits from the filter. The method includes selectively reducing the order of the LC filter in situations where a full dynamic range of the cellular radio is not required and reducing a bit resolution of the quantizer circuit so as to reduce the power requirements of the cellular radio.

5. 发明申请

US20070075886A1 TRANSMITTING AND RECEIVING DEVICE AND TRANSMITTING DEVICE AND RECEIVING DEVICE 有权
标题翻译：发送和接收设备以及发送设备和接收设备
公开(公告)号：US20070075886A1
公开(公告)日：2007-04-05
申请号：US11536251
申请日：2006-09-28
申请人： Shigeyuki Sakura , Hiroshi Suzunaga , Masaru Numano , Atsushi Iwata , Yoshitaka Murasaka , Toshifumi Imamura
发明人： Shigeyuki Sakura , Hiroshi Suzunaga , Masaru Numano , Atsushi Iwata , Yoshitaka Murasaka , Toshifumi Imamura
IPC分类号： H03M3/00
CPC分类号： H04B10/1141 , H04B14/026 , H04B14/06
摘要： According to one aspect of this invention, there is provided a transmitting and receiving device including a transmitting device having a pulse width modulation encoder which generates a pulse width signal having a pulse width corresponding to the binary digital signals outputted from the plurality of sigma-delta analog-to-digital conversion units, and a light-emitting element drive unit which generates and transmits an optical signal by causing a light-emitting element to emit light on the basis of the pulse width signal, and a receiving device having an optical reception unit which converts a current signal, obtained by receiving the optical signal by a light-receiving element, into the pulse width signal, and a pulse width demodulation decoder which reconstructs the binary digital signals of a plurality of channels on the basis of the pulse width signal.
摘要翻译：根据本发明的一个方面，提供了一种发送和接收装置，其包括具有脉冲宽度调制编码器的发送装置，该脉冲宽度调制编码器产生具有对应于从多个Σ-Δ输出的二进制数字信号的脉冲宽度的脉冲宽度信号模拟数字转换单元和通过使发光元件基于脉冲宽度信号发光而产生和发送光信号的发光元件驱动单元，以及具有光接收的接收装置将通过光接收元件接收光信号而获得的电流信号转换成脉冲宽度信号的单元，以及基于脉冲宽度重建多个通道的二进制数字信号的脉宽解调解码器信号。

6. 发明申请

US20070014384A1 MULTIPLE DIFFERENTIAL DEMODULATOR USING WEIGHTING VALUE 失效
标题翻译：多重差分解调器使用称重值
公开(公告)号：US20070014384A1
公开(公告)日：2007-01-18
申请号：US11457116
申请日：2006-07-12
申请人： SANG MIN , TAH PARK , U LEE , KOON CHO , KWANG MOOK LEE
发明人： SANG MIN , TAH PARK , U LEE , KOON CHO , KWANG MOOK LEE
IPC分类号： H04L27/00
CPC分类号： H04B14/06 , H04W84/10
摘要： The present invention relates to a multiple differential demodulator using a weighting value. The multiple differential demodulator according to the present invention includes a weighting value generator for integrating a real part and an imaginary part of a value acquired by multiplying one of a plurality of differentiated reception signals by a conjugated value of a differentiated PN code signal corresponding to a preset symbol, and determining the greater of the integrated real and integrated imaginary parts to apply a predetermined weighting value to the greater value, where the PN code signal is differentiated in the same fashion as the differentiated reception signals.
摘要翻译：本发明涉及使用加权值的多重差分解调器。根据本发明的多重差分解调器包括一个加权值产生器，用于将通过将多个差分接收信号中的一个相乘而得到的值的实部和虚部进行积分，该复数值与对应于并且确定积分的实数和积分虚部中的较大者，以将预定加权值应用于较大值，其中PN码信号以与差分接收信号相同的方式进行微分。

7. 发明申请

US20060171324A1 Using signaling to provide interoperability of ADPCM encoded voice communications 审中-公开
标题翻译：使用信令提供ADPCM编码语音通信的互操作性
公开(公告)号：US20060171324A1
公开(公告)日：2006-08-03
申请号：US11050338
申请日：2005-02-03
申请人： Satish Kumar Mundra , Daniel Thomas , David Lide
发明人： Satish Kumar Mundra , Daniel Thomas , David Lide
IPC分类号： H04L12/66 , H04L12/26
CPC分类号： H04M7/0072 , H04B14/06 , H04L29/06027 , H04L65/1026 , H04L65/1036 , H04L65/1043 , H04L65/605
摘要： Providing interoperability on a voice communication network by detecting incompatible bit packing payload formats of ADPCM encoded voice data signals in an encoder/decoder. A mismatch of bit packing formats between little endian format and big endian format is determined through the use of a media gateway control protocol package called Real Time Protocol that allows a Call Agent to detect the presence of garbled audio and allows an intelligent gateway to detect the payload format being used by remote endpoints during call setup procedures and then switch the gateway's encoding for the payload to the payload format being used by the remote endpoint. The invention may be applied to an ITU G.726 encoder/decoder.
摘要翻译：通过检测编码器/解码器中ADPCM编码语音数据信号的不兼容的位打包有效载荷格式，在语音通信网络上提供互操作性。通过使用称为实时协议的媒体网关控制协议包来确定小端格式和大端格式之间的位打包格式的不匹配，该协议包允许呼叫代理检测到混乱音频的存在，并允许智能网关检测有效载荷格式在呼叫建立过程期间由远程端点使用，然后将网关的有效负载编码切换到由远程端点使用的有效载荷格式。本发明可以应用于ITU G.726编码器/解码器。

8. 发明申请

US20020063645A1 Cellular base station having a high speed, high resolution digital-to-analog converter with off-line sigma delta conversion and storage 有权
公开(公告)号：US20020063645A1
公开(公告)日：2002-05-30
申请号：US09725665
申请日：2000-11-29
发明人： T. R. Viswanathan
IPC分类号： H03M003/00
CPC分类号： H04B14/06
摘要： A digital cellular base station (22) having minimum hardware requirements readily adapted to support high speed communication is disclosed herein. It includes a digital signal processor base band processor and modulator (24), a high-speed, high resolution digital-to-analog converter (26), a RF modulator (30) and an antenna (32). An input signal couples to the digital signal base-band processing modulator (24) for processing. The high-speed, high resolution digital-to-analog converter (26) couples to receive the processed signal and converts the signal into an analog one. The high-speed, high resolution digital-to-analog converter (DAC) (26) has off-line sigma delta conversion and storage which enables it to directly generat a modulated signal at an intermediate frequency, typically on the order of 100 MHz. Incorporation of DAC (26) reduces the amount of hardware necessary for the cellular base-station (22). The RF modulator (30) receives the DAC (26) output and modulates the signal to a broadcasting frequency, typically on the order of 1 G Hz. Antenna (32) couples to receive and transmit the modulated signal.

9. 发明授权

US5654990A Real-time digital audio compression/decompression system 失效
标题翻译：实时数字音频压缩/解压系统
公开(公告)号：US5654990A
公开(公告)日：1997-08-05
申请号：US670482
申请日：1996-06-26
申请人： Ronald Henry Jones, Jr.
发明人： Ronald Henry Jones, Jr.
IPC分类号： G06F5/00 , G10L19/00 , G11B20/00 , H03M7/36 , H04B14/06 , H04B1/66
CPC分类号： G11B20/00007 , H04B14/06 , H04B14/066
摘要： Digitized audio information is compressed by retrieving a first audio sample from a digitized audio signal and storing it in its entire, uncompressed, form. The next audio sample is then retrieved and a signed difference between the first audio sample value and the next audio sample value is computed. If this difference value can be represented in fewer data segments than would be required to represent the next audio sample, the difference value is stored, rather than the value of the next sample, otherwise the next sample is stored. The invention proceeds in this fashion until the entire PCM audio signal is compressed and stored. The compressed data stream is decompressed to generate an output data stream by retrieving a stored sample and examining it to ascertain whether it is a difference value or a flag which indicates that the following data represents a coded amplitude value. If the sample is a difference value it is digitally added to the previous value (taking into account the sign) and the sum is inserted into the output data stream. The sum value is retained in order to be used to compute the next output value if the following sample is also a difference value. Alternatively, if the sample is a flag value it is discarded and the next sample is retrieved and inserted into the output data stream.
摘要翻译：通过从数字化音频信号中检索第一音频样本并将其存储在其整个未压缩的形式中，数字化的音频信息被压缩。然后检索下一个音频样本，并计算第一音频采样值和下一个音频采样值之间的有符号差。如果该差值可以以比代表下一个音频采样所需的数据段更少的数据段表示，则存储差值而不是下一个样本的值，否则存储下一个样本。本发明以这种方式进行，直到整个PCM音频信号被压缩和存储。解压缩压缩数据流以通过检索存储的样本并检查其来确定其是否是差值，或者指示以下数据表示编码幅度值的标志来生成输出数据流。如果样本是差分值，则将其数字地添加到先前值（考虑到符号），并将和插入到输出数据流中。如果以下样本也是差值，则保留总和值以便用于计算下一个输出值。或者，如果样本是标志值，则它被丢弃并且下一个样本被检索并插入到输出数据流中。

10. 发明授权

US5561688A Real-time digital audio compression/decompression system 失效
标题翻译：实时数字音频压缩/解压系统
公开(公告)号：US5561688A
公开(公告)日：1996-10-01
申请号：US174800
申请日：1993-12-29
申请人： Ronald H. Jones, Jr.
发明人： Ronald H. Jones, Jr.
IPC分类号： G06F5/00 , G10L19/00 , G11B20/00 , H03M7/36 , H04B14/06 , H04B1/66
CPC分类号： G11B20/00007 , H04B14/06 , H04B14/066
摘要： Digitized audio information is compressed by retrieving a first audio sample from a digitized audio signal and storing it in its entire, uncompressed, form. The next audio sample is then retrieved and a signed difference between the first audio sample value and the next audio sample value is computed. If this difference value can be represented in fewer data segments than would be required to represent the next audio sample, the difference value is stored, rather than the value of the next sample, otherwise the next sample is stored. The invention proceeds in this fashion until the entire PCM audio signal is compressed and stored. The compressed data stream is decompressed to generate an output data stream by retrieving a stored sample and examining it to ascertain whether it is a difference value or a flag which indicates that the following data represents a coded amplitude value. If the sample is a difference value it is digitally added to the previous value (taking into account the sign) and the sum is inserted into the output data stream. The sum value is retained in order to be used to compute the next output value if the following sample is also a difference value. Alternatively, if the sample is a flag value it is discarded and the next sample is retrieved and inserted into the output data stream.
摘要翻译：通过从数字化音频信号中检索第一音频样本并将其存储在其整个未压缩的形式中，数字化的音频信息被压缩。然后检索下一个音频样本，并计算第一音频采样值和下一个音频采样值之间的有符号差。如果该差值可以以比代表下一个音频采样所需的数据段更少的数据段表示，则存储差值而不是下一个样本的值，否则存储下一个样本。本发明以这种方式进行，直到整个PCM音频信号被压缩和存储。解压缩压缩数据流以通过检索存储的样本并检查其来确定其是否是差值，或者指示以下数据表示编码幅度值的标志来生成输出数据流。如果样本是差分值，则将其数字地添加到先前值（考虑到符号），并将和插入到输出数据流中。如果以下样本也是差值，则保留总和值以便用于计算下一个输出值。或者，如果样本是标记值，则它被丢弃并且下一个样本被检索并插入到输出数据流中。

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