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公开(公告)号：US20220174329A1
公开(公告)日：2022-06-02
申请号：US17674676
申请日：2022-02-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H04N19/93 , H04N19/124 , H04N19/91
Abstract: This application discloses an image encoding method and apparatus, an image decoding method and apparatus, and a chip. In the encoding method, first, a run-length value sequence and a level value sequence are obtained by using a quantized sequence of an image; updated distribution probabilities of level values are obtained based on distribution probabilities of run-length values and the level values and according to a mapping rule; finally, entropy encoding is performed based on the level value sequence and the updated distribution probabilities of the level values, to output encoded image data. A decoder side only needs to additionally learn of the mapping rule to complete decoding. The method is simple to implement, and can improve image compression efficiency and effectively reduce an amount of data for representing the image.
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公开(公告)号：US20220116141A1
公开(公告)日：2022-04-14
申请号：US17556756
申请日：2021-12-20
Applicant: Huawei Technologies Co., Ltd.
Abstract: Embodiments of the present disclosure disclose a communication method and apparatus, including: obtaining to-be-encoded first information, where the first information includes a first information bit set and a second information bit set, bits included in the first information bit set are able to be obtained through correct decoding by a plurality of terminal devices, and bits included in the second information bit set are able to be obtained through correct decoding by some of the plurality of terminal devices; performing first polar encoding on the first information bit set to obtain first encoded information; performing second polar encoding on the second information bit set based on the first encoded information to obtain second encoded information; and outputting the second encoded information. Resources can be saved by implementing the embodiments of the present disclosure.
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Patent Agency Ranking
公开(公告)号：US20180278448A1
公开(公告)日：2018-09-27
申请号：US15991912
申请日：2018-05-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ling LIU , Zhiyu XIAO , Liangchuan LI
CPC classification number: H04L27/01 , H03M13/03 , H03M13/2957 , H04L1/0041 , H04L1/0045 , H04L25/03273 , H04L25/03286 , H04L25/067
Abstract: A signal processing system and method, and an apparatus are provided. A phase recovery apparatus may be used to: receive a feedback signal fed back by an information iteration apparatus, perform, based on the feedback signal, phase recovery on a signal output by an equalizer, and output a phase-recovered signal to a post filtering apparatus, so that the post filtering apparatus performs noise filtering on the phase-recovered signal, and outputs a noise-filtered signal to the information iteration apparatus. To be specific, the phase recovery may be performed, based on the signal fed back by the information iteration apparatus, on the signal output by the equalizer. Because output of the information iteration apparatus is more accurate in determining the signal, precision of the phase recovery can be improved, cycle skipping is reduced, and input signal quality of the post filtering apparatus is improved.
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公开(公告)号：US20220224947A1
公开(公告)日：2022-07-14
申请号：US17584726
申请日：2022-01-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H04N19/93 , H04N19/184 , H04N19/91
Abstract: The present disclosure provides example coding method, apparatus, and computer-readable storage medium. One example method includes sorting a plurality of pieces of run-length encoding (RLE) data based on their distribution probabilities. The plurality of pieces of sorted RLE data are mapped onto a plurality of pieces of reassembled data. The plurality of pieces of reassembled data are expanded into a plurality of pieces of binary data. A first matrix is generated based on the plurality of pieces of binary data. A code sequence is determined by processing a source signal, where the code sequence comprises a first set and a second set. A first vector is decoded to output a third set, where the third set includes one or more bits reserved after processing the source signal and one or more locations at which a decoding error occurs in one or more bits discarded after processing the source signal.
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公开(公告)号：US20230291307A1
公开(公告)日：2023-09-14
申请号：US18318815
申请日：2023-05-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Weiping SONG , Jinlong WANG , Zhongshu ZHANG , Ling LIU
CPC classification number: H02M1/36 , H02M1/0058 , H02M1/08
Abstract: This application discloses a power supply system, including: A first end of a bus capacitor is connected to a first end of a power supply, and a second end of the bus capacitor is connected to a second end of a semiconductor switch device. A first end of the semiconductor switch device is connected to a second end of the power supply. An input end of a power conversion circuit is connected to the bus capacitor. Two ends of a resistor are respectively connected to the first end and the second end of the semiconductor switch device. When the semiconductor switch device is switched off, the power supply supplies power to the bus capacitor by using the resistor. When a voltage of the bus capacitor is greater than a first preset voltage, an auxiliary power supply is powered on and the semiconductor switch device is switched off.
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公开(公告)号：US20170048004A1
公开(公告)日：2017-02-16
申请号：US15338944
申请日：2016-10-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ling LIU , Liangchuan LI
CPC classification number: H04B10/6972 , H04J14/02 , H04J14/06 , H04L25/03299 , H04L25/03993
Abstract: Embodiments of the present invention provide a signal receiving method and a receiver. The signal receiving method includes: sequentially preprocessing a received first signal to obtain to-be-processed second signals; generating filtering coefficients for the second signals by converting colored noise of the second signals into white noise; and filtering the corresponding second signals according to the filtering coefficients. Filtering can be performed according to different channel conditions and transmission requirements, thereby improving system performance of the receiver.
Abstract translation: 本发明的实施例提供了一种信号接收方法和接收机。 信号接收方法包括：对接收到的第一信号进行顺序预处理以获得待处理的第二信号; 通过将所述第二信号的有色噪声转换成白噪声来产生所述第二信号的滤波系数; 并根据滤波系数对相应的第二信号进行滤波。 可以根据不同的信道条件和传输要求进行滤波，从而提高接收机的系统性能。
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7.发明申请公开(公告)号：US20220103256A1
公开(公告)日：2022-03-31
申请号：US17550665
申请日：2021-12-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ling LIU
IPC: H04B10/2569 , H04B10/61 , H04J14/06
Abstract: The present disclosure provides example method for sending a signal in optical communication, an example optical transmitter, and an example optical communication system. One example method for sending a signal in optical communication includes generating, by an optical transmitter, multiple first subcarriers based on a bit stream. State of polarization (SOP) rotation is performed by the optical transmitter on at least one subcarrier in the multiple first subcarriers to generate multiple second subcarriers, wherein the multiple second subcarriers comprise multiple subcarriers each with a relative SOP rotation angle, and the relative SOP rotation angle is not zero and is not an integer multiple of 90 degrees. The multiple second subcarriers are modulated to an optical signal. The modulated optical signal is sent by the optical transmitter.
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