Subsampling Patents (Class 375/240.21)
  • Patent number: 10326987
    Abstract: Systems and methods for encoding alternative streams for use in adaptive bitrate streaming based upon the delay of each stream in accordance with embodiments of the invention are described. One embodiment of the invention includes memory, and a processor configured by a source encoding application to: receive multimedia content, where the multimedia content includes source video data having a primary resolution and a primary sample aspect ratio; and encode the source video data as a set of alternative video streams, where: the alternative video streams have different maximum bitrates; and the alternative video streams are encoded to have an upper bound seek delay that is equal to or less than the upper bound seek delay of streams in the set of alternative video streams that are encoded at a higher maximum bitrate.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: June 18, 2019
    Assignee: DIVX, LLC
    Inventor: Auke Sjoerd van der Schaar
  • Patent number: 10306262
    Abstract: A method of encoding a video is provided, the method includes: determining a filtering boundary on which deblocking filtering is to be performed based on at least one data unit from among a plurality of coding units that are hierarchically configured according to depths indicating a number of times at least one maximum coding unit is spatially spilt, and a plurality of prediction units and a plurality of transformation units respectively for prediction and transformation of the plurality of coding units, determining filtering strength at the filtering boundary based on a prediction mode of a coding unit to which pixels adjacent to the filtering belong from among the plurality of coding units, and transformation coefficient values of the pixels adjacent to the filtering boundary, and performing deblocking filtering on the filtering boundary based on the determined filtering strength.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: May 28, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo-jin Han, Elena Alshina, Jung-hye Min, Alexander Alshin, Il-koo Kim, Nikolay Shlyakhov, Tammy Lee, Sun-il Lee, Min-su Cheon, Jianle Chen, Vadim Seregin, Yoon-mi Hong
  • Patent number: 10194158
    Abstract: An apparatus for coding video information according to certain aspects includes a memory unit and a processor in communication with the memory unit. The memory unit stores video information associated with a reference layer and a corresponding enhancement layer. The processor obtains residue block information based at least in part on video information associated with the reference layer and the enhancement layer. The processor determines an adjustment transform function based on a transform function associated with the video information. The processor determines a transform block based on the adjusted transform function and the residue block information.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: January 29, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Marta Karczewicz, Liwei Guo, Joel Sole Rojals
  • Patent number: 10123031
    Abstract: In one embodiment, a method, system and apparatus for watermarking MPEG-2 compressed video is described, the method, system and apparatus including detecting a pair of neighboring blocks in a MPEG-2 encoded I-frame, determining if the pair of neighboring blocks have dct_dc_differential fields with different values that are within a given threshold value of each other, and embedding a watermark payload bit in the neighboring blocks as a positive result of the determining, the embedding including ordering dct_dc_differential fields of the neighboring blocks such that ordering the dct_dc_differential fields in a first manner encodes a one bit and ordering the dct_dc_differential fields in a second manner encodes a zero bit. Related embodiments of methods, systems, and apparatuses are also described.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: November 6, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Harel Cain, Yaron Sella, Michal Devir
  • Patent number: 10057598
    Abstract: A method is provided for decoding at least one current encoded block of a first image relative to a reference block of a second image including at least one common element with the first image, wherein the reference block has been previously decoded. The method includes: filtering the decoded reference block; estimating, only on the basis of the filtered decoded reference block, at least one value of a local characteristic of the filtered decoded reference block; determining, on the basis of the estimated value of the local characteristic: a set of decoding information to be used for decoding the current block, a method for decoding the current block, on the basis of the estimated value of the local characteristic, decoding the current block on the basis of the set of determined decoding information and according to the determined decoding method.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: August 21, 2018
    Assignee: ORANGE
    Inventors: Joel Jung, Elie Mora
  • Patent number: 10051254
    Abstract: The present invention relates to a method for encoding a color transform. The method includes encoding first parameters representative of video signal characteristics of color output decoded pictures remapped by at least one color transform; and encoding second parameters representative of the at least one color transform.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: August 14, 2018
    Assignee: THOMSON Licensing
    Inventors: Pierre Andrivon, Philippe Bordes, Emmanuel Jolly
  • Patent number: 9984653
    Abstract: Aspects of the disclosure provide a method for reducing video latency. The method includes decoding compressed video data into video frames and storing the video frames in a frame buffer for subsequent display by a display interface, logging decoding ending times of video frames and display times of video frames to generate a latency history over a first window of time, and adjusting a display rate of the display interface based on the latency history over the first window of time in order to change waiting times of video frames, the waiting time of a video frame being a difference between the decoding ending time of the video frame and the display time of the video frame.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: May 29, 2018
    Assignees: SYNAPTICS INCORPORATED, SYNAPTICS LLC
    Inventors: Prakash Madhvapathy, Yongchun Li
  • Patent number: 9787879
    Abstract: According to one embodiment, there is provided an image data receiving device including 1st to Kth lane reproduction circuits, 1st to Kth timing adjustment circuits, 1st to Kth lane reproduction outputs, and 1st to (K?1)th selectors. The Nth lane reproduction circuit transmits data of an nth pixel. The (N+1)th lane reproduction circuit transmits data of an (n+1)th pixel adjacent to the nth pixel. The Nth timing adjustment circuit has an input terminal electrically connected to the Nth lane reproduction circuit. The (N+1)th timing adjustment circuit has an input terminal electrically connected to the (N+1)th lane reproduction circuit. The Nth lane reproduction output can be electrically connected to an output terminal of the Nth timing adjustment circuit. The Nth selector can electrically connect one of the output terminal of the Nth timing adjustment circuit and the output terminal of the (N+1)th timing adjustment circuit to the (N+1)th lane reproduction output.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: October 10, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Takashi Kanoh
  • Patent number: 9667961
    Abstract: A video sequence is encoded by encoding key frames to obtain coded data and non-key frames to obtain error-correcting information. In the encoding process, key frame data are stored in a buffer, first motion information pertaining to the key frames is obtained, and the first motion information is applied to the stored key frame data to generate predicted key frame data. Second motion information pertaining to the non-key frames is also obtained and used to generate predicted non-key frame data. Either the first motion information is obtained from the second motion information, or the second motion information is obtained from the first motion information. The encoder accordingly does not have to obtain motion information from the decoder, and can estimate the amount of error-correcting information to send to the decoder.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: May 30, 2017
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Takahiro Yamasaki
  • Patent number: 9606928
    Abstract: A memory system includes: a memory controller which executes a data access process with an external device using an access unit; a first memory which is connected to the memory controller via a bus and has a first latency; and a second memory which is connected to the memory controller via a bus and has a second latency longer than the first latency. The access unit comprises a first access size assigned to the first memory and a second access size assigned to the second memory. The memory controller executes a data access process with the first memory using the first access size, and executes a data access process with the second memory using the second access size.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: March 28, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Yasuyuki Eguchi
  • Patent number: 9602814
    Abstract: Methods and apparatus are provided for sampling-based super resolution video encoding and decoding. The encoding method receives high resolution pictures and generates low resolution pictures and metadata there from, the metadata for guiding post-decoding post-processing of the low resolution pictures and the metadata; and then encodes the low resolution pictures and the metadata using at least one encoder. The corresponding decoding method receives a bitstream and decodes low resolution pictures and metadata there from using a decoder; and then reconstructs high resolution pictures respectively corresponding to the low resolution pictures using the low resolution pictures and the metadata.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: March 21, 2017
    Assignee: THOMSON LICENSING
    Inventors: Sitaram Bhagavathy, Joan Llach, Dong-Qing Zhang
  • Patent number: 9578277
    Abstract: The present disclosure provides a method and device for storing a video image. The method includes the follows. For each frame of image collected, a confidence value is generated after passing M frames of image each time, in which M is a positive integer. A target encoding frame rate may be determined based on the confidence value latest generated, after passing N frames of image each time. The N frames of image may be encoded and recorded, based on the target encoding frame rate determined, in which N is a positive integer. By adopting the technical solutions of the present disclosure, adaptive capability and availability of system may be improved.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: February 21, 2017
    Assignee: HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO., LTD.
    Inventors: Hai Yu, Tian Huang, Shiliang Pu
  • Patent number: 9549188
    Abstract: Techniques related to designating golden frames and to determining frame sizes and/or quantization parameters golden and non-golden frames for video coding are discussed. Such techniques may include designating an frame as a golden frame or a non-golden frame based on whether the frame is a scene change frame, a distance of the frame to a previous golden frame, and an average temporal distortion of the frame and determining a frame size and/or quantization parameter for the frame based on the designation and a temporal distortion of the frame.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: January 17, 2017
    Assignee: Intel Corporation
    Inventors: Ximin Zhang, Sang-Hee Lee
  • Patent number: 9525444
    Abstract: A system may include a detector, a controller, a shuffler, and a processor. The detector may detect a signal. The controller may control the shuffler based upon the signal. The shuffler may shuffle a plurality of channels at the input of a plurality of processing elements of the processor based upon the signal. The processor may process the signal according to the plurality of channels as configured by the shuffler.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: December 20, 2016
    Assignee: Analog Devices Global
    Inventors: Hajime Shibata, Donald Paterson, Trevor Caldwell, Ali Sheikholeslami, Zhao Li
  • Patent number: 9465954
    Abstract: Methods and systems for tracking masking of one or more data elements in a datastore are disclosed. The methods involve monitoring one or more masking operations on the one or more data elements in the datastore. Thereafter, one or more metadata associated with the one or more masking operations are identified. Subsequent to identifying the one or more metadata, at least a part of the one or more metadata may be recorded. This metadata may then be transmitted to the destination when a copy (full/partial) of the original data is made, enabling the same information on masking to be obtained at the destination, as at the source.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 11, 2016
    Assignee: DATAGUISE INC.
    Inventors: Malcolm Speedie, Ghanaya Singh, Subramanian Ramesh
  • Patent number: 9442176
    Abstract: This disclosure provides methods and systems for form a trajectory of a moving vehicle captured with an image capturing device. According to one exemplary embodiment, a method forms a trajectory of a moving vehicle and determines if the vehicle is moving in one of a permitted manner and an unpermitted manner relative to the appropriate motor vehicle lane restriction laws and/or regulations.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: September 13, 2016
    Assignee: Xerox Corporation
    Inventors: Orhan Bulan, Edgar A. Bernal, Robert P. Loce
  • Patent number: 9407928
    Abstract: A sub-pel-unit image interpolation method using a transformation-based interpolation filter includes, selecting, based on a sub-pel-unit interpolation location in a region supported by a plurality of interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels, one of a symmetric interpolation filter and an asymmetric interpolation filter from among the plurality of interpolation filters; and using the selected interpolation filter to generate the at least one sub-pel-unit pixel value by interpolating the integer-pel-unit pixels.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: August 2, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Elena Alshina, Alexander Alshin
  • Patent number: 9377909
    Abstract: Capacitive touch sensors and touchscreen data processing methods are provided. In one embodiment, the method includes sequentially integrating and converting charge from each of a plurality of sensing capacitors in an array to digital data, the digital data including sample values corresponding to a measured capacitance for each of the plurality of sensing capacitors. Noise is then separated from useful information by filtering the sample values on a sample-by-sample basis. Finally, the filtered sample values are summed and a position of at least one contact on the array determined using the filtered capacitance values. Other embodiments are also provided.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: June 28, 2016
    Assignee: PARADE TECHNOLOGIES, LTD.
    Inventors: Oleksandr Karpin, Igor Kolych, Andriy Maharyta, Ihor Musijchuk, Victor Kremin, Jan-Willem van de Waerdt
  • Patent number: 9332262
    Abstract: According to the present invention, an image encoding/decoding method comprises the steps of: performing an intra prediction on a current block so as to generate a prediction block; performing filtering on a filtering target pixel in the prediction block on the basis of the intra prediction mode of the current block so as to generate a final prediction block; and generating a reconstructed block on the basis of a reconstructed differential block corresponding to the current block and on the final prediction block. According to the present invention, image encoding/decoding efficiency can be improved.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: May 3, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jin Ho Lee, Hui Yong Kim, Sung Chang Lim, Jin Soo Choi, Jin Woong Kim
  • Patent number: 9313522
    Abstract: A sub-pel-unit image interpolation method using a transformation-based interpolation filter includes, selecting, based on a sub-pel-unit interpolation location in a region supported by a plurality of interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels, one of a symmetric interpolation filter and an asymmetric interpolation filter from among the plurality of interpolation filters; and using the selected interpolation filter to generate the at least one sub-pel-unit pixel value by interpolating the integer-pel-unit pixels.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: April 12, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Elena Alshina, Alexander Alshin
  • Patent number: 9282345
    Abstract: The present invention relates to an image processing apparatus and method that can generate a high-accuracy prediction image with a small amount of control information. A motion compensation circuit 51 specifies a macroblock corresponding to a prediction image in a reference frame other than a current frame using a motion vector supplied from a prediction mode determination circuit 41. The motion compensation circuit 51 reads an image of the specified macroblock from a frame memory 19, and extracts the read image as a motion compensation image. An intra-prediction circuit 52 performs intra-prediction on the current frame using an arbitrary method to generate an intra-prediction image IP. The present invention can be applied to, for example, an encoding apparatus and a decoding apparatus.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: March 8, 2016
    Assignee: SONY CORPORATION
    Inventors: Ohji Nakagami, Yoichi Yagasaki
  • Patent number: 9282339
    Abstract: A sub-pel-unit image interpolation method using a transformation-based interpolation filter includes, selecting, based on a sub-pel-unit interpolation location in a region supported by a plurality of interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels, one of a symmetric interpolation filter and an asymmetric interpolation filter from among the plurality of interpolation filters; and using the selected interpolation filter to generate the at least one sub-pel-unit pixel value by interpolating the integer-pel-unit pixels.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: March 8, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Elena Alshina, Alexander Alshin
  • Patent number: 9179160
    Abstract: Systems and methods for error resilient transmission and for random access in video communication systems are provided. The video communication systems are based on single-layer, scalable video, or simulcast video coding with temporal scalability, which may be used in video communication systems. A set of video frames or pictures in a video signal transmission is designated for reliable or guaranteed delivery to receivers using secure or high reliability links, or by retransmission techniques. The reliably-delivered video frames are used as reference pictures for resynchronization of receivers with the transmitted video signal after error incidence and for random access.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: November 3, 2015
    Assignee: Vidyo, Inc.
    Inventors: Stephen Cipolli, Reha Civanlar, Alexandros Eleftheriadis, Jonathan Lennox, Roi Sasson, Manoj Saxena, Ofer Shapiro
  • Patent number: 9167266
    Abstract: The invention relates to a method for deriving motion data for a macroblock divided in elementary blocks of a high resolution picture, called high layer macroblock, from motion data of macroblocks of a low resolution picture, called base layer macroblock.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: October 20, 2015
    Assignee: Thomson Licensing
    Inventors: Edouard Francois, Vincent Bottreau, Jéróme Vieron, Christophe Chevance
  • Patent number: 9124757
    Abstract: A new approach is proposed that contemplates systems and methods to support error resilient coding of H.264 compatible video streams for low latency/delay multimedia communication applications by utilizing and integrating a plurality of error resilient H.264 encoding/decoding schemes in an efficient manner. These error resilient H.264 encoding/decoding schemes can be used to offer a better quality video even when there is network loss of picture frames in the video stream. It has the ability to recover from such loss and recover faster than other techniques without requiring additional data/frames to be sent over the network to achieve the same level of recovery.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: September 1, 2015
    Assignee: Blue Jeans Networks, Inc.
    Inventor: Emmanuel Weber
  • Patent number: 9025899
    Abstract: A method for compressing an image includes decomposing the image into one or more regions. A region of the image is selected to be evaluated. The selected region is transformed and quantized if the region does not meet a predetermined compression acceptability criteria. The predetermined compression acceptability criteria may include a specific bit rate, a specific image quality, or combinations thereof. If the region does not meet the predetermined compression acceptability criteria after the region has been transformed and quantized, then the transformation and quantization settings are adjusted and the region is transformed and quantized using the adjusted settings. The region is then encoded when the predetermined compression acceptability criteria has been reached. The encoding may include additional compression stages.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: May 5, 2015
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Andrew S. Pomianowski, Konstantine Iourcha
  • Patent number: 9021119
    Abstract: Systems and methods for adaptive bitrate streaming in which playback devices select streams based upon stream delay and channel rate in accordance with embodiments of the invention are disclosed. One embodiment is configured to select a first video stream from a set of alternative streams, where at least a plurality of the alternative streams are encoded to have an upper bound seek delay that is equal to or less than the upper bound seek delay of streams in the set of alternative streams that are encoded at a higher maximum bitrate, request chunks of the first video stream and store the requested chunks in the buffer, playback the buffered chunks, measure the channel data rate, and select a second video stream from the set of alternative streams, where the second video stream has a maximum bitrate that is less than the measured channel data rate.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: April 28, 2015
    Assignee: Sonic IP, Inc.
    Inventors: Auke Sjoerd van der Schaar, Som Vaezzadeh Naderi
  • Patent number: 9020039
    Abstract: Systems and methods for encoding alternative streams for use in adaptive bitrate streaming based upon the delay of each stream in accordance with embodiments of the invention are described. One embodiment of the invention includes memory, and a processor configured by a source encoding application to: receive multimedia content, where the multimedia content includes source video data having a primary resolution and a primary sample aspect ratio; and encode the source video data as a set of alternative video streams, where: the alternative video streams have different maximum bitrates; and the alternative video streams are encoded to have an upper bound seek delay that is equal to or less than the upper bound seek delay of streams in the set of alternative video streams that are encoded at a higher maximum bitrate.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: April 28, 2015
    Assignee: Sonic IP, Inc.
    Inventor: Auke Sjoerd van der Schaar
  • Patent number: 9001895
    Abstract: An image display device includes: an interpolation phase generator that generates an interpolation phase on the basis of downsampling frame information representing a downsampling timing at which at least one frame image of the image signal is thinned, and an interpolation frame generator that generates an interpolation frame image corresponding to the interpolation phase. The interpolation phase generator generates the interpolation phase such that a phase distance between a first interpolation frame image from among a plurality of interpolation frame images within one period of downsampling periods, and a second interpolation frame image that follows the first interpolation frame image becomes equal to a phase distance between mutually adjacent interpolation frame images obtained when phase distances between a plurality of interpolation frame images are equalized within one period of the downsampling periods.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: April 7, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshihito Ohta, Tomoko Morita, Yutaka Nio
  • Patent number: 8989269
    Abstract: A motion vector extraction method includes: deciding on a search start position in an original video and performing a spiral motion search; and determining whether or not to perform a search in a sub-sampling video, during P picture search.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: March 24, 2015
    Assignee: Intellectual Discovery Co., Ltd.
    Inventors: Ig Kyun Kim, Kyoung Seon Shin, Nak Woong Eum, Hee-Bum Jung
  • Patent number: 8982952
    Abstract: Methods and systems for using motion vector confidence to determine a FME patch priority list for a scalable coder are disclosed, and may include a fine motion estimator receiving a plurality of coarse motion vectors and corresponding confidences. A patch list may be generated based on the corresponding confidences of the coarse motion vectors. The patch list may then be used to determine a search area. Each video block in a present picture may be matched to the video blocks in the search area to find the best match. A fine motion vector may be determined for each video block in the present picture with respect to a video block in the search area.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: March 17, 2015
    Assignee: Broadcom Corporation
    Inventors: David Drezner, Gideon Kojokaro, Yehuda Mittelman
  • Patent number: 8982959
    Abstract: A signal transmission apparatus includes: a two-pixel sampling-out control section that maps pixel samples to video data regions; a line sampling-out control section that samples out the pixel samples every other line from each line of the sub-images to which the pixel samples have been mapped, so as to generate an interlace signal; a word sampling-out control section that samples out for each word the pixel samples which have been sampled out for each line so as to be mapped to video data regions of an HD-SDI prescribed by the SMPTE 435-1; and a readout control section that outputs the HD-SDI.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: March 17, 2015
    Assignee: Sony Corporation
    Inventor: Shigeyuki Yamashita
  • Patent number: 8964854
    Abstract: Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an encoding tool encodes base layer video and outputs encoded base layer video in a base layer bit stream. The encoding tool encodes inter-layer residual video (representing differences between input video and reconstructed base layer video) using motion compensation relative to previously reconstructed inter-layer residual video. For the inter-layer residual video, the encoding tool outputs motion information and motion-compensated prediction residuals in an enhancement layer bit stream. A decoding tool receives the base layer bit stream and enhancement layer bit stream, reconstructs base layer video, reconstructs inter-layer residual video, and combines the reconstructed base layer video and reconstructed inter-layer residual video.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: February 24, 2015
    Assignee: Microsoft Corporation
    Inventors: Chengjie Tu, Sridhar Srinivasan, Shankar Regunathan, Shijun Sun, Chih-Lung Lin
  • Patent number: 8964851
    Abstract: Dual-mode compression of images/videos for reliable real-time transmission includes a scalable block-based video compression. The method provides graceful quality degradations in case of channel bandwidth changes. Prediction for encoding is avoided, and the process is less complex with less memory requirements. The method involves processing each block independently with the advantage that errors are not able to propagate beyond current block boundaries. Two different encoding modes are used, natural image coding for acquired images and graphics coding for computer generated images. The proper encoding mode is chosen by comparing performance of the two modes for a particular block to be encoded. An embedded bitstream is generated by the encoder in accordance to the available channel bandwidth.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: February 24, 2015
    Assignee: Sony Corporation
    Inventors: Wei Liu, Mohammad Gharavi-Alkhansari, Ali Tabatabai, Yoichi Yagasaki
  • Patent number: 8953673
    Abstract: Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an input frame is downsampled in terms of sample depth and chroma sampling rate, encoded, and output from the encoder as a base layer bitstream. The base layer bitstream is also reconstructed and upsampled to produce a reconstructed bitstream which is subtracted from the original input frame to produce a residual layer. The residual layer is split and encoded as a sample depth residual layer bitstream and a chroma high-pass residual layer bitstream. To recover the encoded input frame, a decoder receives one or more of these bitstreams, decodes them, and combines them to form a reconstructed image. The use of separate codecs is allowed for the base layer and the enhancement layers, without inter-layer dependencies.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: February 10, 2015
    Assignee: Microsoft Corporation
    Inventors: Chengjie Tu, Sridhar Srinivasan, Shankar Regunathan, Shijun Sun
  • Patent number: 8948262
    Abstract: A method for encoding a video stream includes partitioning the video stream into a main layer having a plurality of main layer frames, and an interpolated layer having a plurality of interpolated layer frames; interpolating a frame rate up conversion (FRUC) frame; and encoding the plurality of main layer frames in the interpolated layer with the assistance of the main FRUC frame. A video encoder implementing the method is also described.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: February 3, 2015
    Assignee: Qualcomm Incorporated
    Inventors: Vijayalakshmi R. Raveendran, Gordon Kent Walker
  • Patent number: 8942291
    Abstract: A remote resource access interface apparatus is provided. A key input unit has keys for generating input key values. A communication unit transmits a connection establishment request message including screen resolution information to, and receives a connection establishment response message including supportable key information from, a portable device. The communication unit transmits input key information to and receives video information from the portable device after establishing the connection. A pixel information processing unit converts the video information to pixel signals for a video output unit to display as a visual image. A key advisor unit extracts supportable key information from the response message and outputs the supportable key information to the video output unit. The video information is video data adjusted in resolution based on the screen resolution information, and the input key value is mapped to one of key values indicated by the key information of the portable device.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: January 27, 2015
    Inventor: Gil Hoon Chang
  • Patent number: 8907975
    Abstract: Digital video communication system and method facilitate conservation of communication bandwidth are presented. A present invention method forwards sampled chrominance data to other components in the system. Pixel chrominance values are sampled in accordance with the sampling scheme. The sampled chrominance values (e.g., 422, 420, 411, etc.) are forwarded to another component. For example, a graphics processing unit performs sampling operations and forwards the chrominance sampled information to another component (e.g., a board, a display, etc.). The graphics processing unit can also perform color space conversion before forwarding the chrominance sampled information to the other component. The other component performs up-sampling. For example, a display can perform the up-sampling to generate synthesized full RGB values. The sampled chrominance data can be further compressed (e.g., MPEG, WMV, etc.) before forwarding the sampled chrominance data and before performing the up-sampling.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: December 9, 2014
    Assignee: Nvidia Corporation
    Inventor: William Samuel Herz
  • Patent number: 8897371
    Abstract: The disclosure is directed to a receiver. The receiver includes a video decoder and a frame throttle configured to receive a video sequence comprising a plurality of video frames. The frame throttle is further configured to drop one or more of the video frames from the video sequence before providing the video sequence to the video decoder.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: November 25, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Brian William Orr
  • Patent number: 8885715
    Abstract: An image processing apparatus includes: a local motion vector detection section; a global motion calculation section; a global motion vector calculation section; and an evaluation section.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: November 11, 2014
    Assignee: Sony Corporation
    Inventor: Tohru Kurata
  • Patent number: 8878990
    Abstract: An image signal processing apparatus, which is capable of receiving, as inputs, images transmitted in first and second formats, includes a determination circuit that determines the first and second formats on the basis of correlation among a plurality of pieces of pixel data input in parallel with one another from the first to n-th channels, and a mapping circuit that sorts the plurality of pieces of pixel data in accordance with the determination result obtained by the determination circuit. According to the aforementioned configuration, an image signal processing apparatus that can handle two formats that divide the original image into n images and transmit the n images on n channels can be realized.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: November 4, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takeshi Kumakura
  • Patent number: 8867626
    Abstract: The present invention provides an image encoding/decoding technique that is capable of achieving the higher compression efficiency. An image encoding method comprises: an intra prediction step which performs intra prediction on a block basis to generate a predicted image; a subtraction step which calculates the difference in prediction between the predicted image generated by the intra prediction step and an original image; a frequency conversion step which performs frequency conversion processing for the difference in prediction; a quantization step which subjects the output of the frequency conversion step to quantization processing; and a variable-length encoding step which subjects the output of the quantization step to variable-length encoding processing; wherein the intra prediction encoding step predicts a target pixel to be encoded by use of pixel values of two reference pixels between which the target pixel to be encoded is located.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: October 21, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Takahashi, Tomokazu Murakami
  • Publication number: 20140307802
    Abstract: A method and device for encoding, decoding, storage and transmission of a scalable data stream to include layers having different coding properties including: producing one or more layers of the scalable data stream, wherein the coding properties include at least one of the following: Fine granularity scalability information; Region-of-interest scalability information; Sub-sample scalable layer information; Decoding dependency information; and Initial parameter sets, and signaling the layers with the characterized coding property such that they are readable by a decoder without the need to decode the entire layers. A corresponding method of encoding, decoding, storage, and transmission of a scalable bit stream is also disclosed, wherein at least two scalability layers are present and each layer has a set of at least one property, such as those above identified.
    Type: Application
    Filed: June 26, 2014
    Publication date: October 16, 2014
    Inventors: Ye-Kui Wang, Miska Hannuksela
  • Patent number: 8811492
    Abstract: A video encoder and corresponding method are described for enabling fast channel change of compressed video, where a video encoder for receiving input pictures and providing compressed stream data includes a normal encoding portion for receiving input pictures and providing normal stream data, a lower-quality encoding portion for receiving input pictures and providing channel change stream data, and a multiplexor in signal communication with each of the normal and lower-quality portions for receiving and combining the normal and channel change data streams.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: August 19, 2014
    Assignee: Thomson Licensing
    Inventors: Jill MacDonald Boyce, Alexandros Michael Tourapis, Jeffrey Allen Cooper
  • Patent number: 8780995
    Abstract: It is a purpose of the present invention to provide a video encoding apparatus and a video decoding apparatus which are capable of providing real-time processing having improved coding performance. A video encoding apparatus AA includes an inter-encoding predicted value generating unit 2 configured to receive, as input signals, an input image a, a local decoded value d acquired from an encoded block, prediction direction information e acquired from the encoded block, and interpolation filter initial control information b. The inter-encoding predicted value generating unit 2 includes a filter control unit 21. The filter control unit 21 extracts the tap size N of the interpolation filter and the initial value c0(i,j) of the filter coefficient of the interpolation filter from the interpolation filter initial control information b, and uses the initial value c0(i,j) of the filter coefficient of the interpolation filter as the filter coefficient c(i,j) of the interpolation filter.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: July 15, 2014
    Assignee: KDDI R&D Laboratories Inc.
    Inventors: Tomonobu Yoshino, Sei Naito, Shigeyuki Sakazawa
  • Patent number: 8774266
    Abstract: A method and device for encoding, decoding, storage and transmission of a scalable data stream to include layers having different coding properties including: producing one or more layers of the scalable data stream, wherein the coding properties include at least one of the following: Fine granularity scalability information; Region-of-interest scalability information; Sub-sample scalable layer information; Decoding dependency information; and Initial parameter sets, and signaling the layers with the characterized coding property such that they are readable by a decoder without the need to decode the entire layers. A corresponding method of encoding, decoding, storage, and transmission of a scalable bit stream is also disclosed, wherein at least two scalability layers are present and each layer has a set of at least one property, such as those above identified.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: July 8, 2014
    Assignee: Nokia Corporation
    Inventors: Ye-Kui Wang, Miska Hannuksela
  • Patent number: 8761677
    Abstract: Systems and methods for detecting unused channels in a cognitive radio system are described. In one method, data is communicated on a particular channel for a secondary receiver. In addition, a set of channels is iteratively scanned by collecting samples for each channel and for each iteration of the scanning. Here, iterations of the scanning progressively removes channels from the set of channels based on the collected samples and updates states of the channels in the set based on the collected samples to obtain a set of candidate channels. In response to detecting a pre-determined condition, communications on the particular channel are precluded and at least one of the candidate channels is evaluated by collecting additional samples on each of the channels. Further, at least one of the candidate channels is selected based on the evaluation for utilization by the one or more secondary receivers for data communication.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: June 24, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Kyungtae Kim, Yan Xin, Sampath Rangarajan
  • Patent number: 8718145
    Abstract: A relative quality score is provided that takes into account properties of an encoded version of a source video. For example, one such quality score calculates a difference of higher and lower quality transcoded versions of the source video, and computes quality metrics for each to evaluate how similar the transcoded versions are to the source video. A relative quality score quantifying the quality improvement of the high-quality version over the low-quality version is computed. The relative quality score is adjusted based on a measurement of the quality of the source video. If the relative quality score for the video indicates a sufficient quality improvement of the high-quality version over the low-quality version, various actions are taken, such as retaining the high-quality version, and making the high-quality version available to users, e.g. via a video viewing user interface.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: May 6, 2014
    Assignee: Google Inc.
    Inventors: Huiseng Wang, Xiaoquan Yi
  • Patent number: 8711948
    Abstract: Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an encoding tool encodes base layer video and outputs encoded base layer video in a base layer bit stream. The encoding tool encodes inter-layer residual video (representing differences between input video and reconstructed base layer video) using motion compensation relative to previously reconstructed inter-layer residual video. For the inter-layer residual video, the encoding tool outputs motion information and motion-compensated prediction residuals in an enhancement layer bit stream. A decoding tool receives the base layer bit stream and enhancement layer bit stream, reconstructs base layer video, reconstructs inter-layer residual video, and combines the reconstructed base layer video and reconstructed inter-layer residual video.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: April 29, 2014
    Assignee: Microsoft Corporation
    Inventors: Chengjie Tu, Sridhar Srinivasan, Shankar Regunathan, Shijun Sun, Chih-Lung Lin
  • Patent number: 8705576
    Abstract: Provided are a method and an apparatus for filtering video data. The method includes determining whether a difference value of illumination change (DVIC) of a current image processing unit containing a current block is different from a DVIC of an image processing unit that is adjacent to the current image processing unit and based on the determining, adjusting a filtering strength of a deblocking filter and performing deblocking filtering on a boundary of the current block using the filter with the adjusted filtering strength.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: April 22, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo-sung Shim, Hak-sup Song, Young-ho Moon, Jong-bum Choi