Patents by Inventor Yinchang Yang
Yinchang Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11968459Abstract: The present disclosure relates to systems and methods for automatic exposure control. The methods may include obtaining a first frame and a second frame of a current scene from a camera, wherein a ratio of a first exposure time of the first frame to a second exposure time of the second frame is a first exposure ratio; obtaining a first average luminance of a brightest region in the second frame; obtaining a second average luminance of a darkest region in the first frame; and determining a dynamic range of the current scene based on the first exposure ratio, the first average luminance, and the second average luminance.Type: GrantFiled: December 12, 2021Date of Patent: April 23, 2024Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.Inventors: Peng Zhu, Xingjian Zheng, Guangxiu Yao, Wei Fang, Yinchang Yang
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Patent number: 11967119Abstract: The present disclosure relates to systems and methods for coding. The methods may include receiving at least two contexts, for each of the at least two contexts, obtaining at least one coding parameter corresponding to the context from at least one lookup table, determining a probability interval value corresponding to the context based on a previous probability interval value and the at least one coding parameter, determining a normalized probability interval value corresponding to the context by performing a normalization operation on the probability interval value, determining a probability interval lower limit corresponding to the context based on a previous probability interval lower limit and the at least one coding parameter, determining a normalized probability interval lower limit corresponding to the context by performing the normalization operation on the probability interval lower limit, and outputting at least one byte based on the normalized probability interval lower limit.Type: GrantFiled: December 12, 2021Date of Patent: April 23, 2024Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.Inventors: Pan Yu, Zhuqing Zhu, Qi Chen, Wei Fang, Yinchang Yang
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Patent number: 11887284Abstract: A method for image combination may include obtaining a first image and a second image; dividing the first image into a plurality of first image blocks and dividing the second image into a plurality of second image blocks; for each of the plurality of first image blocks, determining a first block weight based on edge information of the first image block and determining a second block weight based on overall information of the first image block; for each of the plurality of second image blocks, determining a third block weight based on overall information of the second image block; determining an exposure gain ratio based on the second block weights and the third block weights; determining a first combination weight and a second combination weight based on the exposure gain ratio; generating a third image based on the first combination weights and the second combination weights.Type: GrantFiled: August 6, 2021Date of Patent: January 30, 2024Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.Inventors: Yong Qian, Junjun Yu, Wei Fang, Yinchang Yang
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Patent number: 11870596Abstract: A power sourcing equipment is provided. The power sourcing equipment may include an input terminal, an output terminal, a switch, and a device detection circuit. The input terminal may receive a power signal. The output terminal may be electrically coupled to a powered device via a coaxial cable, which transmits the power signal from the power sourcing equipment to the powered device or a data signal from the powered device to the power sourcing equipment. The switch may control an electrical connection between the input and output terminal(s). The device detection circuit may detect whether the data signal is being transmitted from the powered device to the power sourcing equipment. If the data signal is not being transmitted from the powered device to the power sourcing equipment, the device detection circuit may control an operation of the switch based on an electrical parameter associated with the powered device.Type: GrantFiled: October 23, 2021Date of Patent: January 9, 2024Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.Inventors: Haigang Zhu, Dewu Li, Wei Fang, Yinchang Yang
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Publication number: 20220130151Abstract: The present disclosure relates to surveillance systems and methods. The surveillance methods may include converting first digital multimedia data from a first initial format into a first target format and a second target format; obtaining first intelligent data based on the first digital multimedia data of the first target format; generating first analog multimedia data by performing mixing, encoding and digital-analog conversion on the first digital multimedia data of the second target format and the first intelligent data; and transmitting the first analog multimedia data via a coaxial cable.Type: ApplicationFiled: December 29, 2021Publication date: April 28, 2022Applicant: ZHEJIANG XINSHENG ELECTRONIC TECHNOLOGY CO., LTD.Inventors: Bingyun LYU, Wei FANG, Yinchang YANG
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Publication number: 20220103740Abstract: The present disclosure relates to systems and methods for automatic exposure control. The methods may include obtaining a first frame and a second frame of a current scene from a camera, wherein a ratio of a first exposure time of the first frame to a second exposure time of the second frame is a first exposure ratio; obtaining a first average luminance of a brightest region in the second frame; obtaining a second average luminance of a darkest region in the first frame; and determining a dynamic range of the current scene based on the first exposure ratio, the first average luminance, and the second average luminance.Type: ApplicationFiled: December 12, 2021Publication date: March 31, 2022Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.Inventors: Peng ZHU, Xingjian ZHENG, Guangxiu YAO, Wei FANG, Yinchang YANG
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Publication number: 20220101562Abstract: The present disclosure relates to systems and methods for coding. The methods may include receiving at least two contexts, for each of the at least two contexts, obtaining at least one coding parameter corresponding to the context from at least one lookup table, determining a probability interval value corresponding to the context based on a previous probability interval value and the at least one coding parameter, determining a normalized probability interval value corresponding to the context by performing a normalization operation on the probability interval value, determining a probability interval lower limit corresponding to the context based on a previous probability interval lower limit and the at least one coding parameter, determining a normalized probability interval lower limit corresponding to the context by performing the normalization operation on the probability interval lower limit, and outputting at least one byte based on the normalized probability interval lower limit.Type: ApplicationFiled: December 12, 2021Publication date: March 31, 2022Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.Inventors: Pan YU, Zhuqing ZHU, Qi CHEN, Wei FANG, Yinchang YANG
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Publication number: 20220060343Abstract: A power sourcing equipment is provided. The power sourcing equipment may include an input terminal, an output terminal, a switch, and a device detection circuit. The input terminal may receive a power signal. The output terminal may be electrically coupled to a powered device via a coaxial cable, which transmits the power signal from the power sourcing equipment to the powered device or a data signal from the powered device to the power sourcing equipment. The switch may control an electrical connection between the input and output terminal(s). The device detection circuit may detect whether the data signal is being transmitted from the powered device to the power sourcing equipment. If the data signal is not being transmitted from the powered device to the power sourcing equipment, the device detection circuit may control an operation of the switch based on an electrical parameter associated with the powered device.Type: ApplicationFiled: October 23, 2021Publication date: February 24, 2022Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.Inventors: Haigang ZHU, Dewu LI, Wei FANG, Yinchang YANG
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Publication number: 20210374922Abstract: A method for image combination may include obtaining a first image and a second image; dividing the first image into a plurality of first image blocks and dividing the second image into a plurality of second image blocks; for each of the plurality of first image blocks, determining a first block weight based on edge information of the first image block and determining a second block weight based on overall information of the first image block; for each of the plurality of second image blocks, determining a third block weight based on overall information of the second image block; determining an exposure gain ratio based on the second block weights and the third block weights; determining a first combination weight and a second combination weight based on the exposure gain ratio; generating a third image based on the first combination weights and the second combination weights.Type: ApplicationFiled: August 6, 2021Publication date: December 2, 2021Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.Inventors: Yong QIAN, Junjun YU, Wei FANG, Yinchang YANG
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Patent number: 11019365Abstract: A method relating to image compression includes acquiring image data of an image, wherein the image includes a matrix of pixels, and the image data include pixel values of the matrix of pixels. The method also includes generating, based on the image data, a first-level data set including pixel values of a portion of the matrix of pixels. The method further includes determining at least one coding mode for the first-level data set, encoding the first-level data set into a code stream based on the at least one coding mode, and packaging the code stream into a modified code stream.Type: GrantFiled: July 29, 2016Date of Patent: May 25, 2021Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.Inventors: Jingang Lu, Weigang Chen, Weizhong Yao, Xingming Zhang, Yinchang Yang
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Publication number: 20180220160Abstract: A method relating to image compression includes acquiring image data of an image, wherein the image includes a matrix of pixels, and the image data include pixel values of the matrix of pixels. The method also includes generating, based on the image data, a first-level data set including pixel values of a portion of the matrix of pixels. The method further includes determining at least one coding mode for the first-level data set, encoding the first-level data set into a code stream based on the at least one coding mode, and packaging the code stream into a modified code stream.Type: ApplicationFiled: July 29, 2016Publication date: August 2, 2018Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.Inventors: Jingang LU, Weigang CHEN, Weizhong YAO, Xingming ZHANG, Yinchang YANG
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Patent number: 8868061Abstract: A method and a device for detection in cell random access are provided. The method includes: extending an original format used for a random access procedure to change a CP range defined by the original format; in the process of extracting a time-domain signal of a random access channel, extracting and splitting input data into time-domain antenna data in the original format and time-domain antenna data in an enhanced format, and performing signal extraction processing on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format respectively; and in the process of detection, detecting the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format after the signal extraction processing to obtain detection information. The method can improve the performance of a BS and reduce the network construction costs without affecting an MS.Type: GrantFiled: December 21, 2011Date of Patent: October 21, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Qingxue Zhang, Tao Zhang, Yinchang Yang
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Publication number: 20120165004Abstract: A method and a device for detection in cell random access are provided. The method includes: extending an original format used for a random access procedure to change a CP range defined by the original format; in the process of extracting a time-domain signal of a random access channel, extracting and splitting input data into time-domain antenna data in the original format and time-domain antenna data in an enhanced format, and performing signal extraction processing on the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format respectively; and in the process of detection, detecting the time-domain antenna data in the original format and the time-domain antenna data in the enhanced format after the signal extraction processing to obtain detection information. The method can improve the performance of a BS and reduce the network construction costs without affecting an MS.Type: ApplicationFiled: December 21, 2011Publication date: June 28, 2012Applicant: Huawei Technologies Co., Ltd.Inventors: Qingxue Zhang, Tao Zhang, Yinchang Yang