Patents by Inventor Kui Fan
Kui Fan 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: 20220038745Abstract: The present application provides methods, systems, devices and computer-readable mediums for encoding and decoding transform. A method of the present application comprises: performing transform-encoding on a prediction residual block separately using a plurality of transform matrices, to obtain transformed residual blocks; based on the transformed residual block, determining, by a rate-distortion optimization decision, a transform matrix or a combination of transform matrices matching the residual characteristics of the prediction residual block from the plurality of transform matrices, and determining a transformed residual block to be outputted in a bitstream. Compared with the prior art, the method of the embodiments of the present invention performs a residual transform using transform matrices that are more closely matched with the residual characteristic, thereby improving the expression of the residual signal and improving the coding efficiency of the residual block.Type: ApplicationFiled: February 19, 2019Publication date: February 3, 2022Inventors: Ronggang WANG, Kui FAN, Guisen XU, Zhenyu WANG, Wen GAO
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Publication number: 20210400265Abstract: An embodiment of the present disclosure discloses an intra-prediction-based encoding and decoding method, apparatus and filter, and belongs to a video coding technical field.Type: ApplicationFiled: March 26, 2019Publication date: December 23, 2021Inventors: Ronggang WANG, Kui FAN, Guisen XU, Wen GAO
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Patent number: 11051027Abstract: An intra-frame and inter-frame combined prediction method for P frames or B frames. The method comprises: self-adaptively selecting by means of a rate-distortion optimization (RDO) decision whether to use the intra-frame and inter-frame combined prediction or not; using a method for weighting an intra prediction block and an inter prediction block in the intra-frame and inter-frame combined prediction to obtain a final prediction block; and obtaining the weighting coefficient of the intra prediction block and the inter prediction block according to prediction distortion statistics of the prediction method. Therefore, prediction precision can be improved, and coding and decoding efficiency of the prediction blocks are improved.Type: GrantFiled: September 25, 2018Date of Patent: June 29, 2021Assignee: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Ronggang Wang, Kui Fan, Ge Li, Wen Gao
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Patent number: 10939124Abstract: The present application provides a filtering method for intra-frame and inter-frame prediction. For a pixel value obtained by prediction, whether to filter a prediction block is self-adaptively determined by means of an RDO decision; and a filter is established based on a generalized Gaussian distribution function, and different filters are used for prediction blocks of different sizes, and filter parameters are obtained by training the prediction blocks of each size. The method comprises performing RDO on each coding unit on a coding end, and firstly performing intra-frame prediction or inter-frame prediction on each coding unit; then filtering the prediction block using the filtering method of the present invention, and determining whether to use prediction block filtering by means of an RDO decision; on a decoding end, configuring different filtering coefficients for different prediction block sizes; and decoding according to a flag.Type: GrantFiled: September 25, 2018Date of Patent: March 2, 2021Assignee: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Ronggang Wang, Kui Fan, Ge Li, Wen Gao
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Publication number: 20210058627Abstract: The present application provides a filtering method for intra-frame and inter-frame prediction. For a pixel value obtained by prediction, whether to filter a prediction block is self-adaptively determined by means of an RDO decision; and a filter is established based on a generalized Gaussian distribution function, and different filters are used for prediction blocks of different sizes, and filter parameters are obtained by training the prediction blocks of each size. The method comprises performing RDO on each coding unit on a coding end, and firstly performing intra-frame prediction or inter-frame prediction on each coding unit; then filtering the prediction block using the filtering method of the present invention, and determining whether to use prediction block filtering by means of an RDO decision; on a decoding end, configuring different filtering coefficients for different prediction block sizes; and decoding according to a flag.Type: ApplicationFiled: September 25, 2018Publication date: February 25, 2021Inventors: Ronggang WANG, Kui FAN, Ge LI, Wen GAO
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Publication number: 20200314432Abstract: An intra-frame and inter-frame combined prediction method for P frames or B frames. The method comprises: self-adaptively selecting by means of a rate-distortion optimization (RDO) decision whether to use the intra-frame and inter-frame combined prediction or not; using a method for weighting an intra prediction block and an inter prediction block in the intra-frame and inter-frame combined prediction to obtain a final prediction block; and obtaining the weighting coefficient of the intra prediction block and the inter prediction block according to prediction distortion statistics of the prediction method. Therefore, prediction precision can be improved, and coding and decoding efficiency of the prediction blocks are improved.Type: ApplicationFiled: September 25, 2018Publication date: October 1, 2020Inventors: Ronggang WANG, Kui FAN, Ge LI, Wen GAO
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Publication number: 20200314418Abstract: Disclosed is a boundary filtering method for intra prediction, relating to the video encoding technology filed. Whether boundary filtering is performed on an intra prediction block or not is adaptively selected by means of a rate distortion optimization decision; during filtering, a filter coefficient exponentially attenuated relative to distance to boundary is adopted to perform filtering on the first N rows or the first N columns of the intra prediction block by means of an intra prediction block filter, and different filtering strengths are used according to different sizes of the prediction blocks. Therefore, the boundary distortion problem of intra prediction block is solved, the intra prediction precision is improved, and the encoding efficiency of intra prediction block is increased; and the practicability and the robustness of the boundary filtering technology are improved.Type: ApplicationFiled: September 25, 2018Publication date: October 1, 2020Inventors: Ronggang WANG, Kui FAN, Ge LI, Wen GAO
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Patent number: 10750200Abstract: Disclosed is an intraframe prediction method, wherein for an intraframe predicted block in an interframe predicted frame, when an interframe predicted blocks exists on the lower right of the intraframe predicted block, a coding and decoding sequence of intraframe and interframe blocks is adjusted, and intraframe prediction is performed in a lower right intraframe prediction approach, i.e.Type: GrantFiled: July 24, 2017Date of Patent: August 18, 2020Assignee: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOLInventors: Ronggang Wang, Kui Fan, Zhenyu Wang, Wen Gao
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Patent number: 10666292Abstract: The disclosure provided a compressing method of the grayscale compensation table of an OLED display panel, which comprising: step 10, when transmitting a set of grayscale compensation table of the OLED display panel to an encoder for encoding, firstly, performing a differential calculation on many grayscale compensation tables with a same color channel and different gray scales in the set of which to acquire a corresponding reference image and a difference image as replacements of many grayscale compensation tables; step 20, transmitting the above images to the encoder; step 30, the encoder compressing and encoding a received grayscale compensation table. The compressing method of the grayscale compensation table of the OLED display panel performs the intra-level differences between the same color component and the different grayscale compensation tables in the same OLED compensation table to improve an efficiency and a performance of the compression compensation table.Type: GrantFiled: November 30, 2017Date of Patent: May 26, 2020Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Yufan Deng, Mingjong Jou, Shensian Syu, Ronggang Wang, Kui Fan, Hao Li
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Publication number: 20190387234Abstract: The present disclosure provides an encoding method, a decoding method, an encoder, and a decoder, the encoding method comprises: performing interframe prediction to each interframe coded block to obtain corresponding interframe predicted blocks; writing information of each of the interframe predicted blocks into a code stream; if the interframe coded block exists at an adjacent position to the right or beneath or to the lower right of the intraframe coded block, performing intraframe prediction to the intraframe coded block based on at least one reconstructed coded blocks at adjacent positions to the left and/or above and/or to the upper left of the intraframe coded block and at least one of the interframe coded blocks at adjacent positions to the right and/or beneath and/or to the lower right of the intraframe coded block to obtain intraframe predicted blocks; writing information of each of the intraframe predicted blocks into the code stream.Type: ApplicationFiled: August 30, 2019Publication date: December 19, 2019Inventors: Ronggang WANG, Kui FAN, Zhenyu WANG, Wen GAO
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Publication number: 20190373281Abstract: The present disclosure provides an encoding method, a decoding method, an encoder, and a decoder, the encoding method comprises: performing interframe prediction to each interframe coded block to obtain corresponding interframe predicted blocks; writing information of each of the interframe predicted blocks into a code stream; if the interframe coded block exists at an adjacent position to the right or beneath or to the lower right of the intraframe coded block, performing intraframe prediction to the intraframe coded block based on at least one reconstructed coded blocks at adjacent positions to the left and/or above and/or to the upper left of the intraframe coded block and at least one of the interframe coded blocks at adjacent positions to the right and/or beneath and/or to the lower right of the intraframe coded block to obtain intraframe predicted blocks; writing information of each of the intraframe predicted blocks into the code stream.Type: ApplicationFiled: July 24, 2017Publication date: December 5, 2019Inventors: Ronggang WANG, Kui FAN, Zhenyu WANG, Wen GAO
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Patent number: 10425640Abstract: A method, a device and an encoder for controlling filtering of intra-frame prediction reference pixel point are disclosed. The method includes: when various reference pixel points in a reference pixel group of an intra-frame block to be predicted are filtered, and the target reference pixel point to be filtered currently is not an edge reference pixel point in a reference pixel group (S202), acquiring a pixel difference value between the target reference pixel point and n adjacent reference pixel points thereof (S203); and selecting a filter with the filtering grade thereof corresponding to the pixel difference value to filter the target reference pixel point (S204). For various reference pixel points not located at an edge in a reference pixel group, according to the local difference characteristics of these reference pixel points, filters with corresponding filtering grades are flexibly configured, thus providing flexibility and adaptivity to the filtering, achieving better effect.Type: GrantFiled: June 16, 2016Date of Patent: September 24, 2019Assignee: Peking University Shenzhen Graduate SchoolInventors: Ronggang Wang, Kui Fan, Zhenyu Wang, Wen Gao
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Patent number: 10346566Abstract: Embodiments of the present disclosure relate to a method and device for simulating a disk drive. The device includes a converter configured to convert a received first signal for operating the device into a second signal and a third signal. The device further includes a simulation controller configured to control a simulation mode of the device based on the second signal, and the simulation controller is connected to the converter via a communications interface. The device also includes a plurality of simulators configured to simulate a plurality of functions associated with the disk drive based on the third signal, and the plurality of simulators include at least two of an input/output (I/O) performance simulator, a power characteristic simulator and an additional signal simulator, and each of the plurality of simulators is connected to the converter and the simulator controller.Type: GrantFiled: December 22, 2016Date of Patent: July 9, 2019Assignee: EMC IP Holding Company LLCInventors: Chao Wu, Krein Zuiliang Peng, Li Zhain, Anita Ying Zhou, Ranky Kui Fan
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Publication number: 20190132001Abstract: The disclosure provided a compressing method of the grayscale compensation table of an OLED display panel, which comprising: step 10, when transmitting a set of grayscale compensation table of the OLED display panel to an encoder for encoding, firstly, performing a differential calculation on many grayscale compensation tables with a same color channel and different gray scales in the set of which to acquire a corresponding reference image and a difference image as replacements of many grayscale compensation tables; step 20, transmitting the above images to the encoder; step 30, the encoder compressing and encoding a received grayscale compensation table. The compressing method of the grayscale compensation table of the OLED display panel performs the intra-level differences between the same color component and the different grayscale compensation tables in the same OLED compensation table to improve an efficiency and a performance of the compression compensation table.Type: ApplicationFiled: November 30, 2017Publication date: May 2, 2019Inventors: Yufan DENG, Mingjong JOU, Shensian SYU, Ronggang WANG, Kui FAN, Hao LI
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Publication number: 20190098303Abstract: A method, a device and an encoder for controlling filtering of intra-frame prediction reference pixel point are disclosed. The method includes: when various reference pixel points in a reference pixel group of an intra-frame block to be predicted are filtered, and the target reference pixel point to be filtered currently is not an edge reference pixel point in a reference pixel group (S202), acquiring a pixel difference value between the target reference pixel point and n adjacent reference pixel points thereof (S203); and selecting a filter with the filtering grade thereof corresponding to the pixel difference value to filter the target reference pixel point (S204). For various reference pixel points not located at an edge in a reference pixel group, according to the local difference characteristics of these reference pixel points, filters with corresponding filtering grades are flexibly configured, thus providing flexibility and adaptivity to the filtering, achieving better effect.Type: ApplicationFiled: June 16, 2016Publication date: March 28, 2019Inventors: Ronggang Wang, Kui Fan, Zhenyu Wang, Wen Gao
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Publication number: 20170185705Abstract: Embodiments of the present disclosure relate to a method and device for simulating a disk drive. The device comprises a converter configured to convert a received first signal for operating the device into a second signal and a third signal. The device further comprises a simulation controller configured to control a simulation mode of the device based on the second signal, and the simulation controller is connected to the converter via a communication interface. The device also comprises a plurality of simulators configured to simulate a plurality of functions associated with the disk drive based on the third signal, and the plurality of simulators comprise at least two of an input/output (I/O) performance simulator, a power characteristic simulator and an additional signal simulator, and each of the plurality of simulators is connected to the converter and the simulation controller.Type: ApplicationFiled: December 22, 2016Publication date: June 29, 2017Inventors: Chao Wu, Krein Zuiliang Peng, Li Zhain, Anita Ying Zhou, Ranky Kui Fan