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1. 发明授权

US11184023B1 Hardware friendly data compression 有权
公开(公告)号：US11184023B1
公开(公告)日：2021-11-23
申请号：US17000607
申请日：2020-08-24
申请人： Innogrit Technologies Co., Ltd.
发明人： Yuan-Mao Chang , Fang-Ju Ku
IPC分类号： H03M7/40 , H03M7/30 , H03M7/32 , H03M7/42
摘要： Systems, apparatus and methods are provided for compressing data and decompressing compressed data. A method may comprise receiving an input data block to be compressed, generating a number of occurrences table and a cumulative occurrences table for distinct symbols in the input data block, for each symbol in the input data block, based on the number of occurrences table and the cumulative occurrences table, dynamically obtaining a number of shifts for right-shifting a current state “x” to encode a current symbol, outputting right-shifted bits to encoded data and obtaining a next state “x” and obtaining a final state “X” from a last state “x” generated in a final loop.

2. 发明申请

US20210265982A1 SYSTEM IMPROVING SIGNAL HANDLING 有权
公开(公告)号：US20210265982A1
公开(公告)日：2021-08-26
申请号：US17196946
申请日：2021-03-09
申请人： MediaTek Inc.
发明人： Jen-Huan Tsai , Chih-Hong Lou
IPC分类号： H03H17/02 , H03M7/36 , H03H17/04 , H03H17/00 , H03M3/00 , H04B14/06 , H03M7/32
摘要： The invention provides a system improving signal handling, e.g., transmission and/or processing. In an embodiment, the system may include a filter circuit, a magnitude bit truncation circuit and a utility circuit. The filter circuit may be coupled to a target signal which contains one or more desired signals at one or more interested bands, for attenuating each said interested band to form a filtered signal. The magnitude bit truncation circuit may be coupled to the filter circuit, for truncating one or more bits of each sample of the filtered signal to form a truncated signal. The utility circuit may be coupled to the magnitude bit truncation circuit, for handling the truncated signal to implement handling of the target signal, so as to reduce resource requirement and enhance error tolerance comparing with directly handling the target signal.

3. 发明授权

US11012088B2 Data processing apparatuses, methods, computer programs and computer-readable media 有权
公开(公告)号：US11012088B2
公开(公告)日：2021-05-18
申请号：US16817164
申请日：2020-03-12
申请人： V-NOVA INTERNATIONAL LIMITED
发明人： David Handford
IPC分类号： H03M7/30 , H03M7/18 , H03M7/32 , H04N19/30 , H04N19/176 , H04N19/124 , H04N19/137 , H04N19/172 , H04N19/182
摘要： A first value of a first data element in a first set of data elements is obtained, the first set of data elements being based on a first time sample of a signal. A second value of a second data element in a second set of data elements is obtained, the second set of data elements being based on a second, later time sample of the signal. A measure of similarity is derived between the first value and the second value. Based on the derived measure, a quantisation parameter useable in performing quantisation on data based on the first time sample of the signal is determined. Output data is generated using the quantisation parameter.

4. 发明申请

US20200220586A1 COMPRESSION OF RADIO SIGNALS WITH ADAPTIVE MAPPING 审中-公开
公开(公告)号：US20200220586A1
公开(公告)日：2020-07-09
申请号：US16822304
申请日：2020-03-18
申请人： AT&T Intellectual Property I, L.P.
发明人： Aditya Chopra , Arunabha Ghosh , Milap Majmundar , SaiRamesh Nammi
IPC分类号： H04B7/0417 , H04B7/06 , H03M7/32 , H04B7/0456 , H04B1/66 , H04L25/00
摘要： The described technology is generally directed towards selecting a compression and/or quantization function for communicating data to and from an analog front end of a radio unit of a base station coupled to a digital baseband processor of a central unit of the base station. The compression function and/or quantization function can be adaptively and/or otherwise selected based on various criteria, such as the amount of data being transmitted, whether the data corresponds to reference signals or other data, the network architecture (e.g., digital beamforming or hybrid beamforming) in use, and so on.

5. 发明授权

US10608664B2 Electronic apparatus for compression and decompression of data and compression method thereof 有权
公开(公告)号：US10608664B2
公开(公告)日：2020-03-31
申请号：US16240075
申请日：2019-01-04
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Dongsoo Lee , Youngchul Cho , Kwanghoon Son , Byeoungwook Kim
IPC分类号： H04N7/26 , H03M7/32 , G06N20/00 , G06N3/08 , H03M13/41 , G05B13/00 , H03M5/00 , G06N7/02 , H03M1/12 , H03M7/00
摘要： A data compression method and a data decompression method are provided. The method includes pruning an original data including a plurality of weight parameters, identifying at least one first weight parameter of which at least one first value is not changed by the pruning, among multiple weight parameters included in the pruned original data, and obtaining a first index data including location information of the at least one first weight parameter of which the at least one first value is not changed, identifying at least one second weight parameter of which at least one second value is changed by the pruning, among the multiple weight parameters included in the pruned original data, and substituting the at least one second weight parameter of which the at least one second value is changed with a don't care parameter.

6. 发明申请

US20190356329A1 High Efficiency Power Amplifier Architectures for RF Applications 审中-公开
公开(公告)号：US20190356329A1
公开(公告)日：2019-11-21
申请号：US16525066
申请日：2019-07-29
申请人： MY Tech, LLC
发明人： Tommy Yu , Avanindra Madisetti
IPC分类号： H03M3/00 , H03F3/19 , H03F3/217 , H03F3/24 , H03F1/02 , H03M7/32
摘要： A parallel delta sigma modulator architecture is disclosed. The parallel delta sigma modulator architecture includes a signal demultiplexer configured to receive an input signal and to demultiplex the input signal to output a plurality of streams, a plurality of delta sigma modulators executing in parallel, each delta sigma modulator configured to receive a stream from the plurality of streams and to generate a delta sigma modulated output, and a signal multiplexer configured to receive a plurality of delta sigma modulated outputs from the plurality of delta sigma modulators and to multiplex together the plurality of delta sigma modulated outputs into a pulse train.

7. 发明申请

US20190312585A1 DATA PROCESSING APPARATUSES, METHODS, COMPUTER PROGRAMS AND COMPUTER-READABLE MEDIA 审中-公开
公开(公告)号：US20190312585A1
公开(公告)日：2019-10-10
申请号：US16295854
申请日：2019-03-07
申请人： V-NOVA INTERNATIONAL LTD
发明人： David HANDFORD
IPC分类号： H03M7/30 , H03M7/18 , H03M7/32
摘要： A first value of a first data element in a first set of data elements is obtained, the first set of data elements being based on a first time sample of a signal. A second value of a second data element in a second set of data elements is obtained, the second set of data elements being based on a second, later time sample of the signal. A measure of similarity is derived between the first value and the second value. Based on the derived measure, a quantisation parameter useable in performing quantisation on data based on the first time sample of the signal is determined. Output data is generated using the quantisation parameter.

8. 发明授权

US10348325B2 Measuring device and electrical controller 有权
公开(公告)号：US10348325B2
公开(公告)日：2019-07-09
申请号：US15998540
申请日：2018-08-16
申请人： Lenze Automation GmbH
发明人： Dirk Duesterberg
IPC分类号： H03M3/00 , H03M1/12 , H03M7/32 , H03M1/10
摘要： A measuring device includes a delta-sigma modulator configured to take an analog signal as a basis for generating a bit stream, and an evaluation unit that receives the bit stream from the delta-sigma modulator and evaluates the received bit stream. The measuring device has a single data transmission line, wherein the delta-sigma modulator is configured to transmit the bit stream to the evaluation unit via the single data transmission line using a transmit clock, and wherein the evaluation unit is configured to reconstruct the transmit clock and/or a phase of bits within the bit stream from the received bit stream and to extract the bits from the received bit stream based on the reconstructed transmit clock and/or based on the reconstructed phase.

9. 发明授权

US09520894B1 Signal encoding and compression with dynamic downsampling 有权
标题翻译：信号编码和压缩与动态下采样
公开(公告)号：US09520894B1
公开(公告)日：2016-12-13
申请号：US14836916
申请日：2015-08-26
申请人： The Boeing Company
发明人： Amir L. Liaghati
IPC分类号： H03M7/32 , H03M3/04 , H03M7/30
CPC分类号： H03M3/04
摘要： A signal encoding and compression system with dynamic downsampling may include an encoder module configured to decimate a first digital signal, thereby producing a second digital signal. Each signal may then be DPCM-encoded. Decision logic may then be used to determine which encoded signal to provide as an output, based on a characteristic of the original signal.
摘要翻译：具有动态下采样的信号编码和压缩系统可以包括被配置为抽取第一数字信号的编码器模块，从而产生第二数字信号。然后可以对每个信号进行DPCM编码。然后，决定逻辑可以用于基于原始信号的特性来确定要提供作为输出的编码信号。

10. 发明申请

US20050264350A1 Class D amplifier and a method of pulse width modulation 有权
标题翻译： D类放大器和脉宽调制方法
公开(公告)号：US20050264350A1
公开(公告)日：2005-12-01
申请号：US11124530
申请日：2005-05-06
申请人： Jae-Wook Lee , Goog-Chun Cho
发明人： Jae-Wook Lee , Goog-Chun Cho
IPC分类号： H03K5/04 , H03F3/217 , H03F3/38 , H03K7/08 , H03M7/32
CPC分类号： H03F3/217 , H03F2200/331
摘要： A class D amplifier and a method of pulse width modulation are provided. The class D amplifier includes a sigma delta modulator, a reference signal generator, a pulse width modulator and an amplifier. The sigma delta modulator converts an M bit input signal into N bit pulse code modulation data (M and N are integers and M>N). The reference signal generator counts a system clock and generates an N bit reference signal having 2N data blocks in a sampling period of the pulse code modulation data. The pulse width modulator generates a plurality of pulse width modulation signals having at least two switching periods within the sampling period of the pulse code modulation data. The pulse width modulation signals have pulse widths varied based on a unit time interval of the reference signal. The unit time interval corresponds to one of the data blocks of the reference signal.
摘要翻译：提供D类放大器和脉冲宽度调制方法。 D类放大器包括一个Σ-Δ调制器，一个参考信号发生器，一个脉宽调制器和一个放大器。 Σ-Δ调制器将M位输入信号转换成N位脉冲码调制数据（M和N是整数，M> N）。参考信号发生器对系统时钟进行计数，并在脉冲编码调制数据的采样周期中产生具有2个N个数据块的N位参考信号。脉宽调制器产生在脉冲编码调制数据的采样周期内具有至少两个切换周期的多个脉宽调制信号。脉冲宽度调制信号具有基于参考信号的单位时间间隔而变化的脉冲宽度。单位时间间隔对应于参考信号的数据块之一。

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