Patents by Inventor Yung-Chang Chang

Yung-Chang 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).

  • Publication number: 20190075312
    Abstract: A video decoding method is used for decoding a multi-plane video bitstream. The multi-plane video bitstream includes a first video subset bitstream corresponding to a fundamental plane (FP) and at least one second video subset bitstream corresponding to at least one augmented plane (AP). The video decoding method includes decoding the first video subset bitstream, decoding the at least one second video subset bitstream, and performing resampling of one decoded FP frame to generate one resampled frame. Decoding the first video subset bitstream includes performing decoding of a first FP frame to generate a first decoded FP frame. Decoding the at least one second video subset bitstream includes performing decoding of a first AP frame to generate a first decoded AP frame. A processing time of performing decoding of the first FP frame overlaps a processing time of performing resampling of said one decoded FP frame.
    Type: Application
    Filed: September 6, 2018
    Publication date: March 7, 2019
    Inventors: Yung-Chang Chang, Chia-Yun Cheng, Chih-Ming Wang, Meng-Jye Hu, Cheng-Han Li
  • Patent number: 10205957
    Abstract: An apparatus for multi-standard bin decoding in a video decoder for decoding two video coded in two different video coding standards is disclosed. The apparatus includes a first bin decoder to decode one or more first bin strings, a second bin decoder to decode one or more second bin strings, a standard change control module coupled to the first bin decoder and the second bin decoder and a system controller coupled to the standard change control module, the first bin decoder and the second bin decoder. The standard change control module or the system controller selects either a next slice or picture to be decoded by the first bin decoder or the second bin decoder based on one or more control parameters including the decoding time information.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: February 12, 2019
    Assignee: MEDIATEK INC.
    Inventors: Chia-Yun Cheng, Sheng-Jen Wang, Yung-Chang Chang
  • Publication number: 20190037223
    Abstract: A method and apparatus of scalable video coding using Inter prediction mode for a video coding system are disclosed, where video data being coded comprise BP (Basic Resolution Pass) pictures and UP (Upgrade Resolution Pass) pictures. In one embodiment according to the present invention, the method comprises receiving information associated with input data corresponding to a target block in a target UP picture. When the target block is Inter coded according to a current MV (motion vector) and uses a collocated BP picture as one reference picture, one or more BP MVs (motion vectors) of the collocated BP picture are scaled to generate one or more RCP (resolution change processing) MVs. The current MV of the target block is encoded or decoded using an UP MV predictor derived based on one or more temporal MVPs including said one or more RCP MVs.
    Type: Application
    Filed: July 24, 2018
    Publication date: January 31, 2019
    Inventors: Yung-Chang CHANG, Chia-Yun CHENG, Cheng-Han LI
  • Patent number: 10171824
    Abstract: Method and system of video decoding incorporating frame compression to reduce frame buffer size are disclosed. The method adjusts parameters of the frame compression according to decoder system information or syntax element in the video bitstream. The decoder system information may be selected from a group consisting of system status, system parameter and a combination of system status and system parameter. The decoder system information may include system bandwidth, frame buffer size, frame buffer status, system power consumption, and system processing load. The syntax element comprises reference frame indicator, initial picture QP (quantization parameter), picture type, and picture size. The adaptive frame compression may be applied to adjust compression ratio. Furthermore, the adaptive frame compression may be applied to a decoder for a scalable video coding system or a multi-layer video coding system.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: January 1, 2019
    Assignee: MEDIATEK INC.
    Inventors: Tsu-Ming Liu, Yung-Chang Chang, Chi-Cheng Ju
  • Patent number: 10163188
    Abstract: A buffer write method for a buffer, including a plurality of M-bit storage units, has following steps: obtaining pixel data of a plurality of first N-bit pixels of a picture; calculating a corresponding start address of the buffer for the pixel data of the first N-bit pixels; and storing the first N-bit pixels of the picture according to the calculated start address of the buffer in the M-bit storage units by a buffer controller. The storing step includes fully storing at least one of the first N-bit pixels in one of the M-bit storage units storage units, wherein M and N are positive integers, and M is not divisible by N.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: December 25, 2018
    Assignee: MEDIATEK INC.
    Inventors: Chun-Chia Chen, Chi-Cheng Ju, Yung-Chang Chang
  • Patent number: 10134107
    Abstract: A data arrangement method includes following steps: obtaining pixel data of a plurality of first N-bit pixels of a picture; and storing the obtained pixel data of the first N-bit pixels in a plurality of M-bit storage units of a first buffer according to a block-based scan order of the picture. The picture includes a plurality of data blocks, and the block-based scan order includes a raster-scan order for the data blocks. At least one of the M-bit storage units is filled with part of the obtained pixel data of the first N-bit pixels, M and N are positive integers, M is not divisible by N, and the first N-bit pixels include at least one pixel divided into a first part stored in one of the M-bit storage units in the first buffer and a second part stored in another of the M-bit storage units in the first buffer.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: November 20, 2018
    Assignee: MEDIATEK INC.
    Inventors: Chun-Chia Chen, Chi-Cheng Ju, Yung-Chang Chang, Ping Chao
  • Publication number: 20180329371
    Abstract: A data processing system includes a buffer, a design under checking (DUC), and a self-checking circuit. The buffer is used to buffer data generated from a source device. The DUC is used to perform a designated function upon data read from the buffer when operating under a normal mode. The self-checking circuit is used to apply logic functional checking to the DUC when the DUC operates under a self-checking mode. When the DUC operates under the self-checking mode, the buffer keeps buffering data generated from the source device.
    Type: Application
    Filed: May 9, 2018
    Publication date: November 15, 2018
    Inventors: Huei-Min Lin, Yi-Chang Chen, Chih-Ming Wang, Yung-Chang Chang
  • Publication number: 20180321734
    Abstract: A system and method of operating an a power supply unit with a light load efficiency control system comprising a power regulator circuit for receiving an alternating current (AC) input voltage from within a range of accommodated AC input voltages and including a power factor correction (PFC) circuit and an LLC resonator circuit having a bulk capacitance voltage level and operable to receive the input AC voltage in the power supply unit and where the power supply unit generates a direct current (DC) output voltage for use by a load.
    Type: Application
    Filed: May 4, 2017
    Publication date: November 8, 2018
    Applicant: Dell Products, LP
    Inventors: Chi-Che Wu, Wei-Cheng Yu, Yung Chang Chang, Ya-Tang Hsieh
  • Patent number: 10123028
    Abstract: A syntax parsing apparatus includes a plurality of syntax parsing circuits and a dispatcher. Each of the syntax parsing circuits has at least entropy decoding capability. The syntax parsing circuits generate a plurality of entropy decoding results of a plurality of image regions within a same frame, respectively. The dispatcher assigns bitstream start points of the image regions to the syntax parsing circuits, and triggers the syntax parsing circuits to start entropy decoding, respectively.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: November 6, 2018
    Assignee: MEDIATEK INC.
    Inventors: Ming-Long Wu, Chia-Yun Cheng, Yung-Chang Chang
  • Patent number: 10121805
    Abstract: A semiconductor structure is disclosed. The semiconductor substrate includes: a front surface and a back surface; and a heterogeneous radiation-sensing region in the semiconductor substrate, the heterogeneous radiation-sensing region including a top surface, a bottom surface and sidewalls, the top surface being adjacent to the front surface of the semiconductor substrate, the sidewalls being perpendicular to the front surface of the semiconductor substrate, and the bottom surface being parallel to the front surface of the semiconductor substrate. An associated manufacturing method is also disclosed.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: November 6, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Ming-Chyi Liu, Yu-Hsing Chang, Yung-Chang Chang, Shih-Chang Liu
  • Patent number: 10123044
    Abstract: A partial decoding circuit with inverse second transform has a transpose buffer, a first-direction inverse residual transform circuit, and a second-direction inverse residual transform circuit. The transpose buffer stores an intermediate inverse residual transform result. The first-direction inverse residual transform circuit processes an inverse quantization output to generate the intermediate inverse residual transform result to the transpose buffer. The second-direction inverse residual transform circuit accesses the transpose buffer to retrieve the intermediate inverse residual transform result, and processes the intermediate inverse residual transform result to generate a final inverse residual transform result, where the final inverse residual transform result of the inverse second transform is further processed by an inverse transform circuit.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: November 6, 2018
    Assignee: MEDIATEK INC.
    Inventors: Min-Hao Chiu, Yu-Chuan Wang, Yung-Chang Chang
  • Patent number: 10104397
    Abstract: A video processing apparatus includes a reconstruct circuit, a storage device, and an intra prediction circuit. The reconstruct circuit generates reconstructed pixels of a first block of a picture. The storage device at least stores a portion of the reconstructed pixels of the first block, wherein a capacity of the storage device is smaller than a reconstructed data size of the picture. The intra prediction circuit performs intra prediction of a second block of the picture based at least partly on pixel data obtained from the storage device.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: October 16, 2018
    Assignee: MEDIATEK INC.
    Inventors: Meng-Jye Hu, Yung-Chang Chang, Chia-Yun Cheng
  • Publication number: 20180295380
    Abstract: A method and apparatus for video encoding or decoding used by an AVS2 (Second Generation of Audio Video Coding Standard) video encoder or decoder respectively are disclosed. According to this method, first motion vectors associated with spatial neighboring blocks of a current block are determined. For each spatial neighboring block, a value of 1 is assigned to a first BlockDistance associated with the spatial neighboring block if a corresponding first reference picture is a G picture or GB picture. Motion vector predictor candidates are derived from the first motion vectors by scaling each first motion vector according to a corresponding first BlockDistance and a current BlockDistance. A final motion vector predictor is determined among the motion vector predictor candidates.
    Type: Application
    Filed: December 6, 2017
    Publication date: October 11, 2018
    Inventors: Min-Hao Chiu, Chia-yun Cheng, Yung-Chang Chang
  • Publication number: 20180261636
    Abstract: A semiconductor structure is disclosed. The semiconductor substrate includes: a front surface and a back surface; and a heterogeneous radiation-sensing region in the semiconductor substrate, the heterogeneous radiation-sensing region including a top surface, a bottom surface and sidewalls, the top surface being adjacent to the front surface of the semiconductor substrate, the sidewalls being perpendicular to the front surface of the semiconductor substrate, and the bottom surface being parallel to the front surface of the semiconductor substrate. An associated manufacturing method is also disclosed.
    Type: Application
    Filed: March 9, 2017
    Publication date: September 13, 2018
    Inventors: MING-CHYI LIU, YU-HSING CHANG, YUNG-CHANG CHANG, SHIH-CHANG LIU
  • Patent number: 10075722
    Abstract: A multi-core video decoder system includes a plurality of video decoder cores and a storage device. The video decoder cores are used to decode a picture, wherein each of the video decoder cores decodes a portion of the picture. The storage device has at least one shared storage space accessed by different video decoder cores of the video decoder cores. In addition, an associated video decoding method includes: performing a plurality of video decoding operations to decode a picture, wherein each of the video decoding operations decodes a portion of the picture; and controlling different video decoding operations of the video decoding operations to access at least one shared storage space.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: September 11, 2018
    Assignee: MEDIATEK INC.
    Inventors: Chia-Yun Cheng, Shun-Hsiang Chuang, Yung-Chang Chang
  • Patent number: 10070070
    Abstract: One exemplary video processing apparatus includes a control circuit and a size selection circuit. The control circuit determines picture boundary information. The size selection circuit refers to at least the picture boundary information to select a size for a block associated with encoding of a picture, wherein selection of the size is constrained by the picture boundary information to ensure that the block with the selected size is not across a picture boundary of the picture.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: September 4, 2018
    Assignee: MEDIATEK INC.
    Inventors: Meng-Jye Hu, Yung-Chang Chang, Chia-Yun Cheng
  • Publication number: 20180249175
    Abstract: A method for motion vector predictor derivation of a block includes scanning a plurality of candidate motion vector predictors derived from at least a portion of neighbors of the block. The step of scanning the candidate motion vector predictors includes: regarding one of the candidate motion vector predictors, selectively updating a first predictor list according to the candidate motion vector predictor when the candidate motion vector predictor points to a reference block in a designated reference frame of the block, and selectively updating a second predictor list according to the candidate motion vector predictor when the candidate motion vector predictor points to a reference block in a specific reference frame different from the designated reference frame of the block.
    Type: Application
    Filed: April 26, 2018
    Publication date: August 30, 2018
    Inventors: Shun-Hsiang Chuang, Chih-Ming Wang, Yung-Chang Chang
  • Publication number: 20180174885
    Abstract: An embodiment is an apparatus. The apparatus includes: a collective wafer platter including a plurality of individual wafer pockets, the individual wafer pockets having respective individual wafer platters, the individual wafer platters configured to rotate around respective first axes, the collective wafer platter configured to rotate around a second axis; a motor coupled to the collective wafer platter; and a control unit configured to control the motor such that the individual wafer platters rotate around the respective first axes, and the collective wafer platter rotates around the second axis.
    Type: Application
    Filed: September 1, 2017
    Publication date: June 21, 2018
    Inventor: Yung-Chang Chang
  • Patent number: 10003823
    Abstract: A video decoder has a first processing circuit and a second processing circuit. A shared storage device is accessible to the first processing circuit and the second processing circuit. The first processing circuit performs a first decoding operation according to data access of the shared storage device. The second processing circuit performs a second decoding operation according to data access of the shared storage device. The first decoding operation is at least a portion of a first decoding function complying with a first video coding standard, and the second decoding operation is at least a portion of a second decoding function complying with a second video coding standard different from the first video coding standard.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: June 19, 2018
    Assignee: MEDIATEK INC.
    Inventors: Min-Hao Chiu, Yung-Chang Chang
  • Patent number: 9992512
    Abstract: A method for motion vector predictor derivation of a block includes following steps: during a same-reference-frame stage of the motion vector predictor derivation, scanning a plurality of candidate motion vector predictors derived from neighbors of the block, and generating a determination result by determining if any candidate motion vector predictor is qualified for a different-reference-frame stage of the motion vector predictor derivation; and referring to the determination result to selectively enable the different-reference-frame stage following the same-reference-frame stage.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: June 5, 2018
    Assignee: MEDIATEK INC.
    Inventors: Shun-Hsiang Chuang, Chih-Ming Wang, Yung-Chang Chang