Patents by Inventor Yilin Chang
Yilin Chang 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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Publication number: 20240104309Abstract: A method includes receiving an input for a large language model (LLM) from a user. The method also includes generating one or more token embeddings based on the input. The method further includes generating one or more prompt embeddings based on the input using a contextual prompt generator (CPG), the one or more prompt embeddings representing new or updated information that is not contained in existing knowledge of the LLM. The method also includes providing the one or more token embeddings and the one or more prompt embeddings to the LLM. In addition, the method includes outputting a prediction based on the one or more token embeddings and the one or more prompt embeddings using the LLM, wherein the prediction reflects the new or updated information represented by the one or more prompt embeddings.Type: ApplicationFiled: September 12, 2023Publication date: March 28, 2024Inventors: Yen-Chang Hsu, Harshavardhan Kamarthi, Yilin Shen, Hongxia Jin
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Patent number: 9324147Abstract: A method and an apparatus for computing a parallax are provided. The method includes: obtaining a plurality of views of a pixel point; computing gradients in a plurality of directions of the pixel point in the plurality of view; computing a matching error corresponding to a parallax of the pixel point according to the gradients; and computing the parallax of the current pixel point according to the matching error. Through the method and the apparatus for computing a parallax, the accuracy of parallax estimation is increased.Type: GrantFiled: July 21, 2011Date of Patent: April 26, 2016Assignee: Huawei Technologies Co., Ltd.Inventors: Sixin Lin, Hui Yuan, Yilin Chang, Haitao Yang, Xiaoxian Liu, Junyan Huo, Fuzheng Yang
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Patent number: 8184164Abstract: A method for measuring multimedia communication quality is disclosed. The multimedia video communication quality may be objectively reflected through the embedment and extraction of digital watermark under a precondition that the quality of the multimedia video data is not obviously affected. In the invention, each frame of the multimedia video data is uniformly divided into blocks of equal size and watermark data is embedded in each of the blocks, so that the watermark may be uniformly distributed. The multimedia video data are divided into groups, and the watermark is embedded in a part of the frames with equal interval between the frames in each group to reduce the effect of the watermark on the data. The watermark information is directly embedded in the spatial domain of the original video data.Type: GrantFiled: June 23, 2006Date of Patent: May 22, 2012Assignee: Huawei Technologies Co., Ltd.Inventors: Fuzheng Yang, Zhong Luo, Shuai Wan, Yilin Chang
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Publication number: 20110273537Abstract: A method and an apparatus for computing a parallax are provided. The method includes: obtaining a plurality of views of a pixel point; computing gradients in a plurality of directions of the pixel point in the plurality of view; computing a matching error corresponding to a parallax of the pixel point according to the gradients; and computing the parallax of the current pixel point according to the matching error. Through the method and the apparatus for computing a parallax, the accuracy of parallax estimation is increased.Type: ApplicationFiled: July 21, 2011Publication date: November 10, 2011Applicant: Huawei Technologies Co., Ltd.Inventors: Sixin Lin, Hui Yuan, Yilin Chang, Haitao Yang, Xiaoxian Liu, Junyan Huo, Fuzheng Yang
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Patent number: 8037397Abstract: The present invention discloses a method for recovering a lost data unit, the method including: partitioning data to be transmitted into one or more data units, sorting the data units according to importance levels of the data units, and determining a check rule for the one or more data units, performing, by a transmitting end, a calculation on the sorted data units according to a predetermined algorithm depending on the check rule, to generate one or more corresponding check units; transmitting, by the transmitting end, the one or more data units to a receiving end in a sorted order, and transmitting the corresponding check units to the receiving end; recovering, by the receiving end, a lost data unit according to the receiving data units and check units as well as the check rule. With the method, the loss-preventative capability of the data units may be improved.Type: GrantFiled: August 9, 2005Date of Patent: October 11, 2011Assignee: Huawei Technologies Co., Ltd.Inventors: Zhong Luo, Jing Wang, Da Al, Jie Jia, Yilin Chang
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Publication number: 20100220791Abstract: A video coding method based on a motion skip mode (MSM) is provided. The method includes the following steps. A corresponding reference block of a current macro block to be encoded in a view-point reference image is determined, according to a direction of a disparity vector from a current image relative to the view-point reference image deduced by using a block smaller than 16×16 pixels as a base unit. The current macro block to be encoded is then encoded according to motion information of a macro block that the determined corresponding reference block belongs to. Other related video coding methods and corresponding codecs based on the MSM are also provided. Therefore, macro block motion information (MMI) of the currently encoded macro block at a corresponding position in the view-point reference image can be more accurately obtained, thereby improving a coding efficiency of the MSM.Type: ApplicationFiled: April 15, 2010Publication date: September 2, 2010Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Sixin Lin, Haitao Yang, Yilin Chang, Junyan Huo, Shan Gao, Lianhuan Xiong
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Patent number: 7688359Abstract: The present invention discloses a method for acquiring automatic exposure control parameters and a method for controlling automatic exposure control parameters and an imaging device. The core idea is to take the brightness weighted average value obtained according to brightness distribution weighted statistics of the image as the exposure control parameter. Then through adjusting the weighted coefficient of pixels in different brightness regions, control the influence of the pixel concentrated brightness regions on the brightness average value. Because the brightness distribution is the basis for determining weighted statistics, the control method of the present invention is not influenced by the scene assumption. Rather it can be universally adapted to a variety of different scenes, and the exposure control effect is not influenced by the position of scenes in the actual bright region/dark region and block distribution.Type: GrantFiled: December 26, 2006Date of Patent: March 30, 2010Assignee: Huawei Technologies Co., Ltd.Inventors: Guangyao Zhao, Xiaoxia Wei, Jing Wang, Haitao Yang, Yilin Chang
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Publication number: 20090245392Abstract: A method for concealing errors includes that the transmitting end splits the received compressed video data into slice structures, allocates the adjacent slice structures to non-adjacent OFDM sub-channels or sub-channel groups, and sends the slice structures to the receiving end; the receiving end conceals the errors on a slice structure according to the slice structure which is chronologically or spatially related to the erroneous slice structure if detecting that any error occurs on the slice structure. The transmitting end includes a slice splitting module and a frequency domain interleaving module; the receiving end includes a domain de-interleaving module, a decompression and error detecting module, and an error concealing module.Type: ApplicationFiled: June 12, 2009Publication date: October 1, 2009Inventors: Raymond W.K. Leung, Jun Yao, Yanzhou Ma, Yilin Chang, Junyan Huo
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Publication number: 20080273861Abstract: A method for measuring multimedia communication quality is disclosed. The multimedia video communication quality may be objectively reflected through the embedment and extraction of digital watermark under a precondition that the quality of the multimedia video data is not obviously affected. In the invention, each frame of the multimedia video data is uniformly divided into blocks of equal size and watermark data is embedded in each of the blocks, so that the watermark may be uniformly distributed. The multimedia video data are divided into groups, and the watermark is embedded in a part of the frames with equal interval between the frames in each group to reduce the effect of the watermark on the data. The watermark information is directly embedded in the spatial domain of the original video data.Type: ApplicationFiled: June 23, 2006Publication date: November 6, 2008Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Fuzheng Yang, Zhong Luo, Shuai Wan, Yilin Chang
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Publication number: 20080144724Abstract: A method for protecting video transmission based on H.264 is disclosed, In the invention, a receiving end performs statistical analysis on the communication quality and the result is fed back to a transmitting end, the transmitting end adjusts the protection strategy self adaptively; the receiving end performs statistical analysis on the accumulated lost slice rate and position information about lost data based on the discontinuous situation of NALU sequence numbers; the receiving end feeds the statistical information back to the transmitting end with extended SEI message; the transmitting end configures two sets of protection strategy systems to separately protect critical data and non critical data, and selects the protection strategy of appropriate level according to the accumulated lost slice rate that is fed back; the receiving end transmits position information about lost data back to the transmitting end; the transmitting end resends the lost data.Type: ApplicationFiled: October 5, 2007Publication date: June 19, 2008Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Zhong LUO, Bin Song, Ningzhao Zhou, Yilin Chang
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Publication number: 20080095246Abstract: The invention relates to a method for eliminating errors in compressed video transmission. A method for eliminating errors in H.264 compressed video transmission is disclosed, to eliminating errors in a simple and efficient manner. In the invention, an error information feedback mechanism is used in combination with error concealment and error propagation suppression to eliminate errors. An error is detected and statistics of error information, such as position of lost data, is obtained by sequence numbers of NALUs and information for carrying slices. An error information feedback channel is established in H.264 architecture by defining an extended SEI message. The error propagation is suppressed by segment-wise intra-coding in batches.Type: ApplicationFiled: October 18, 2007Publication date: April 24, 2008Inventors: Zhong LUO, Bin Song, Yilin Chang, Ningzhao Zhou
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Publication number: 20080052605Abstract: The present invention discloses a method for recovering a lost data unit, the method including: partitioning data to be transmitted into one or more data units, sorting the data units according to importance levels of the data units, and determining a check rule for the one or more data units; performing, by a transmitting end, a calculation on the sorted data units according to a predetermined algorithm depending on the check rule, to generate one or more corresponding check units; transmitting, by the transmitting end, the one or more data units to a receiving end in a sorted order, and transmitting the corresponding check units to the receiving end; recovering, by the receiving end, a lost data unit according to the received data units and check units as well as the check rule. With the method, the loss-preventive capability of the data units may be improved.Type: ApplicationFiled: August 9, 2005Publication date: February 28, 2008Applicant: HUAWEI TECHNOLOGIES CO. LTD.Inventors: Zhong Luo, Jing Wang, Da AI, Jie Jia, Yilin Chang
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Publication number: 20070263097Abstract: The present invention discloses a method for acquiring automatic exposure control parameters and a method for controlling automatic exposure control parameters and an imaging device. The core idea is to take the brightness weighted average value obtained according to brightness distribution weighted statistics of the image as the exposure control parameter. Then through adjusting the weighted coefficient of pixels in different brightness regions, control the influence of the pixel concentrated brightness regions on the brightness average value. Because the brightness distribution is the basis for determining weighted statistics, the control method of the present invention is not influenced by the scene assumption. Rather it can be universally adapted to a variety of different scenes, and the exposure control effect is not influenced by the position of scenes in the actual bright region/dark region and block distribution.Type: ApplicationFiled: December 26, 2006Publication date: November 15, 2007Applicant: Huawei Technologies Co., Ltd.Inventors: Guangyao Zhao, Xiaoxia Wei, Jing Wang, Haitao Yang, Yilin Chang