Dropout Compensator (e.g., Replacement Type) Patents (Class 348/616)
  • Patent number: 10404994
    Abstract: Method and apparatus for deriving a motion vector at a video decoder. A block-based motion vector may be produced at the video decoder by utilizing motion estimation among available pixels relative to blocks in one or more reference frames. The available pixels could be, for example, spatially neighboring blocks in the sequential scan coding order of a current frame, blocks in a previously decoded frame, or blocks in a downsampled frame in a lower pyramid when layered coding has been used.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: September 3, 2019
    Assignee: Intel Corporation
    Inventors: Yi-Jen Chiu, Lidong Xu, Hong Jiang
  • Patent number: 10075734
    Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: September 11, 2018
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jin Ho Lee, Hui Yong Kim, Se Yoon Jeong, Suk Hee Cho, Ha Hyun Lee, Jong Ho Kim, Sung Chang Lim, Jin Soo Choi, Jin Woong Kim, Chie Teuk Ahn
  • Patent number: 9838711
    Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: December 5, 2017
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jin Ho Lee, Hui Yong Kim, Se Yoon Jeong, Suk Hee Cho, Ha Hyun Lee, Jong Ho Kim, Sung Chang Lim, Jin Soo Choi, Jin Woong Kim, Chie Teuk Ahn
  • Patent number: 9781448
    Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction comprises the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: October 3, 2017
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jin Ho Lee, Hui Yong Kim, Se Yoon Jeong, Suk Hee Cho, Ha Hyun Lee, Jong Ho Kim, Sung Chang Lim, Jin Soo Choi, Jin Woong Kim, Chie Teuk Ahn
  • Patent number: 9661345
    Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: May 23, 2017
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jin Ho Lee, Hui Yong Kim, Se Yoon Jeong, Suk Hee Cho, Ha Hyun Lee, Jong Ho Kim, Sung Chang Lim, Jin Soo Choi, Jin Woong Kim, Chie Teuk Ahn
  • Patent number: 9582863
    Abstract: Provided is an image processing apparatus including an image signal correction section that performs an image correction process. The image signal correction section performs a direction determination process of detecting a direction having a minimum pixel value gradient as a pixel value gradient direction in a pixel area including a target pixel; a defect detection process of calculating a Laplacian based on a pixel value of a reference pixel in a minimum gradient direction detected in the direction determination process with respect to the target pixel, and determining presence or absence of a defect of the target pixel; and a defect correction process of performing calculation of a corrected pixel value, which is obtained by applying the pixel value of the reference pixel in the direction detected in the direction determination process, with respect to a target pixel from which a defect has been detected in the defect detection process.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: February 28, 2017
    Assignee: Sony Semiconductor Solutions Corporation
    Inventor: Hirotaka Shinozaki
  • Patent number: 9549204
    Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction comprises the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: January 17, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT
    Inventors: Jin Ho Lee, Hui Yong Kim, Se Yoon Jeong, Suk Hee Cho, Ha Hyun Lee, Jong Ho Kim, Sung Chang Lim, Jin Soo Choi, Jin Woong Kim, Chie Teuk Ahn
  • Patent number: 9506882
    Abstract: A system for processing real-time fluoroscopy image sequences. A first image frame is loaded into an upper level memory of a hierarchical memory system that is coupled to at least one processing core. The first image frame is processed with an object detection filter to form a likelihood image frame. The first image frame and the likelihood image frame is spatially filtered using a spatial filter look up table (LUT) stored in an L1 level memory of the processing core. The likelihood image frame is temporally filtering using a temporal filter LUT stored in the L1 level memory.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: November 29, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Udayan Dasgupta, Murtaza Ali
  • Patent number: 9466017
    Abstract: An image processing device includes a first and a second image processing module including an image processing unit, and a connection module that is connected to the first and second image processing modules, and moves an image data from one image processing module to the other image processing module. At least one of the image processing modules includes a weighted average processing unit that calculates, based on a weighting coefficient included in an attribute value, a weighted average of a pixel value of the input image data and a image processed pixel value, and an output unit which outputs at least one of the image processed pixel value and the weighted-averaged pixel value.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: October 11, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akitoshi Yamada, Mitsuhiro Ono, Fumitaka Goto, Rie Kajihara
  • Patent number: 9462220
    Abstract: Techniques and tools for interpolation of image/video content are described. For example, a tool such as a display processing module in a computing device receives pixel values of a low-resolution picture and determines an interpolated pixel value between a set of the pixel values from the low-resolution picture. The tool uses auto-regressive edge-directed interpolation that incorporates a backward projection constraint (AR-EDIBC). As part of the AR-EDIBC, the tool can compute auto-regressive (AR) coefficients then apply the AR coefficients to the set of pixel values to determine the interpolated pixel value. For the backward projection constraint, the tool accounts for effects of projecting interpolated pixel values back to the pixel values of the low-resolution picture. The tool stores the interpolated pixel values and pixel values from the low-resolution picture as part of a high-resolution picture. The tool can adaptively use AR-EDIBC depending on content and other factors.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: October 4, 2016
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Yongjun Wu, Wenfeng Gao
  • Patent number: 9369724
    Abstract: Embodiments are directed to decoding incomplete video data. In one scenario, a computer system receives a piece of a frame (e.g. a video frame). The frame includes multiple frame pieces, where each frame piece is encoded so as to be individually decodable. The computer system decodes the received frame pieces while waiting for at least one additional frame piece to be received. Then, when a condition occurs indicating that the frame is incomplete, the computer system synthesizes frame pieces to replace the additional frame piece that has not yet been received.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: June 14, 2016
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Sean Callahan
  • Patent number: 9252760
    Abstract: A signal amplitude detection circuit includes a detector and a trimming algorithm module, and the detector having a preset baseline threshold reference value and an output terminal connected with the trimming algorithm module which is arranged for recording and decoding an output result of the detector to output an amplitude code value, and generating a control signal for controlling the baseline threshold reference value rise to a power supply level from a ground level or drop to the ground level from the power supply level, and the output result of the detector being “1” if a crossover occurs between the baseline threshold reference value and the detected signal; otherwise being “0”. The signal amplitude detection circuit detects the signal amplitude in a digital way, which has simpler structure, lower power consumption, reduced size of chips, and stable and accurate detection result without PVT drift.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: February 2, 2016
    Assignee: IPGOAL MICROELECTRONICS (SICHUAN) CO., LTD.
    Inventors: Ziche Zhang, Zhengxian Zou
  • Patent number: 9229686
    Abstract: A preferred method of accuracy configuration with an approximate adder receives two input operands and generates a first approximate adder output with a plurality of sub-adders having a first accuracy under a first condition. Error detection and correction is selectively enabled to generate a next approximate adder output having a second accuracy that is higher than the first accuracy under a second condition. In preferred embodiments, a pipelined architecture provides selectable stages and the enablement of each successive stage provides a high level of accuracy. Power gated control can achieve enablement of error correction stages to conserve power.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: January 5, 2016
    Assignee: The Regents of the University of California
    Inventors: Andrew B. Kahng, Seokhyeong Kang
  • Patent number: 9225945
    Abstract: A moving picture encoder and encoding method for encoding a moving picture signal are disclosed. The moving picture encoder includes a plurality of reference picture memory areas, each area storing picture data of a reference picture to be used for prediction; and a prediction picture generator including a motion compensator that generates the predicted picture by using the picture data stored in the reference picture memory area, a parameter representing a motion between an image to be predicted and the reference picture and prediction mode information indicating a prediction mode corresponding to a prediction method used for generating a predicted picture, and a memory updater that controls a timing of updating the picture data of a full frame stored in the reference picture memory area; and a multiplexer that multiplexes an information representing memory update in a bitstream.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: December 29, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Kohtaro Asai, Tokumichi Murakami, Hirofumi Nishikawa, Shinichi Kuroda, Yoshimi Isu, Yuri Hasegawa
  • Patent number: 9066072
    Abstract: Systems and methods are provided for calibrating image sensors. In some embodiments, a processing module of an image system can automatically perform a self-calibration process after a production unit of an image sensor has been integrated into an end product system. For example, the processing module can calibrate a production unit based on one or more reference pixels of the production unit, where the one or more reference pixels have minimal color filtration. In some embodiments, the processing module may perform local calibrations by correcting specifically for spatial variations in a color filter array (“CFA”). In some embodiments, the processing module can perform global calibrations by correcting for optical density variations in the CFA. In some embodiments, a processing module can determine whether the cause of production variations is related to production variations of a CFA or production variations of an infrared (“IR”) cutoff filter.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: June 23, 2015
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Yingjun Bai, Brian Keelan, Gennadiy Agranov
  • Patent number: 8929434
    Abstract: Image or video from a cell phone is processed to expand the image in a way to display it on a high definition video screen.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: January 6, 2015
    Assignee: Ubiquity Broadcasting Corporation
    Inventors: Kenneth Stephen Bailey, Christopher Carmichael
  • Publication number: 20140368700
    Abstract: A method for cross-modal signal denoising, the method comprising using at least one hardware processor for: providing a first multi-modal signal comprising at least two relatively clear modalities; correlating features exhibited simultaneously in the at least two relatively clear modalities of the first multi-modal signal; providing a second multi-modal signal comprising at least one relatively noisy modality and at least one relatively clear modality; and denoising the at least one relatively noisy modality of the second multi-modal signal by associating between (a) features exhibited in the at least one relatively noisy modality of the second multi-modal signal and (b) the features of the first multi-modal signal.
    Type: Application
    Filed: June 11, 2014
    Publication date: December 18, 2014
    Inventors: Dana Segev, Yoav Schechner, Michael Elad
  • Publication number: 20140300817
    Abstract: A flash removal system identifies and removes flash lighting from a video. The flash removal system identifies flash-exposed frames in the video based on a time stamp of the frame, an average luminance of the frame, or a user input. The flash removal system generates a replacement frame for each identified flash-exposed frame based on at least one frame of the video. The flash removal system replaces the flash-exposed frames with the replacement frames, generating a modified video having reduced flash lighting.
    Type: Application
    Filed: March 14, 2014
    Publication date: October 9, 2014
    Applicant: GOOGLE INC.
    Inventors: Arkady Bezman, Audrey Ya-Jun Yang
  • Patent number: 8804046
    Abstract: Systems and methods for detecting chroma dropout errors in one or more fields associated with various video frames are provided. Pixels associated with a current field are divided into a set of pixel pairs. Co-occurrences matrices are calculated for previous and subsequent fields. A first pixel pair associated with the current field is selected. First and second set of entries are selected from the co-occurrence matrices corresponding to the previous and subsequent fields. The first pixel pair is searched in the first and second set of entries. An absence of the first pixel pair in the first and second set of entries satisfies a first criterion of chroma dropout error. Other criteria in addition to the first criterion are evaluated to label the first pixel pair as erroneous.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: August 12, 2014
    Assignee: Interra Systems Inc.
    Inventors: Bhupender Kumar, Shekhar Madnani
  • Patent number: 8797462
    Abstract: A band processing circuit which generates image signals corresponding to different frequency bands from an image signal in which signals corresponding to different colors are arranged and which suppresses noise by synthesizing the image signals of the different frequency bands, a sampling circuit which generates image signal corresponding to the colors by sampling the image signal input from the band processing circuit in accordance with a predetermined arrangement, and a luminance/color generation circuit which generates a luminance signal in which aliasing is suppressed using an image signal output from the sampling circuit.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: August 5, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shinya Hirai
  • Patent number: 8718448
    Abstract: Some embodiments of the invention provide a media-editing application that performs frame rate conversion detection on a video. For a video that has been converted from one frame rate and format to another frame rate and format, the application detects the conversion method that has been used in the conversion of the video. Some embodiments perform this frame rate conversion detection by detecting patterns of repeating fields and/or frames in a video sequence created by the different conversion processes. Some embodiments compute (i) a frame difference value for each consecutive frames, (ii) a correlation score for the first and second fields of each frame, and (iii) a correlation score for the second field of each frame and the first field of a succeeding frame. Frame difference values are compared with each other to detect repeated frames and correlation scores are compared with each other to detect repeated fields.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: May 6, 2014
    Assignee: Apple Inc.
    Inventor: Ken Kengkuan Lin
  • Patent number: 8687125
    Abstract: An image processing system for processing a target pixel to be processed, which target pixel corresponds to inputted image data, a plurality of pixels including the target pixel being arranged in a matrix manner, includes an NR circuit (106). The NR circuit (106) includes a signal processing process circuit (114) for carrying out subtraction or addition, with respect to a pixel value Aij of the target pixel, of a value equivalent to a noise quantity Er calculated in advance, in a case where the pixel value Aij of the target pixel is larger or smaller, respectively, than a first couple of estimated values Bij and Cij for the pixel value Aij of the target pixel, the first couple of estimated values Bij and Cij being estimated from pixel values of respective pixels adjacent to the target pixel, centered at the target pixel, in a temporal axis or in a spatial axis.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: April 1, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takaji Numao, Seiichi Gohshi, Takashi Mine
  • Patent number: 8675075
    Abstract: A method and apparatus for measuring the quality of a video sequence, which includes a plurality of frames, among which one or more consecutive frames are lost, wherein during the displaying of the video sequence, the one or more lost frames are substituted by an immediate preceding frame in the video sequence during a period from the displaying of the immediate preceding frame to that of an immediate subsequent frame of the one or more lost frames, the method includes measuring the quality of the video sequence as a function of a first parameter (DF) relating to the stability of the immediate preceding frame during the period, a second parameter (DD) relating to the continuity between the immediate preceding frame and the immediate subsequent frame, and a third parameter (DP) relating to the coherent 20 motions of the video sequence.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: March 18, 2014
    Assignee: Thomson Licensing
    Inventors: Xiaodong Gu, Debing Liu, Zhibo Chen
  • Patent number: 8644306
    Abstract: In a Voice over Internet Protocol (VoIP) video communication method and apparatus, first and second VoIP-based terminals store video event indexes and images mapped thereto with respect to state information of a user and terminal, and establish a session using session establishment information defining the video event. The first terminal then transmits a data packet including the video event index, and the second terminal receives the data packet and outputs an image mapped to the video event index of the images stored in advance. Thus, by transmitting and receiving a predefined index alone without transmitting user and terminal states as a real time data-type image, the VoIP video communication method and apparatus prevent unnecessary waste of bandwidth in video communication.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: February 4, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Soung-Kwan Kimn, Hyun-Min Yoon, Hui-Jae Lee, Ji-Youn Jung, Myeon-Kee Youn, Seong-Joon Jeon
  • Patent number: 8629913
    Abstract: Certain embodiments disclosed herein relate to an image signal processing system includes overflow control logic that detects an overflow condition when a destination unit when a sensor input queue and/or front-end processing unit receives back pressure from a downstream destination unit. In one embodiment, pixels of a current frame are dropped when an overflow condition occurs. The number of dropped pixels may be tracked using a counter. Upon recovery of the overflow condition, the remaining pixels of the frame are received and each dropped pixel may be replaced using a replacement pixel value.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: January 14, 2014
    Assignee: Apple Inc.
    Inventors: Guy Côté, Jeffrey E. Frederiksen
  • Patent number: 8576341
    Abstract: In one embodiment of the present invention, motion compensated interpolation is performed by locating full frame conceal and reveal areas, determining intermediate frame occlusion areas of an interpolated frame of the displayable output by locating intermediate frame conceal areas based on projected locations of pixels within the full frame conceal areas using forward motion vectors and information about a time slot for the interpolated frame, and by locating intermediate frame reveal areas based on projected locations of pixels within the full frame reveal areas using backward motion vectors and information about the time slot for the interpolated frame; for any pixels in the interpolated frame to which there is neither a forward vector nor a backward vector projecting: including the pixel in an intermediate frame conceal area if it is not located within the full frame reveal area; including the pixel in an intermediate frame reveal area if it is not located within the full frame conceal area; and using the
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: November 5, 2013
    Assignee: STMicroelectronics, Inc.
    Inventor: Gordon Petrides
  • Patent number: 8542322
    Abstract: In one embodiment of the present invention, motion compensated interpolation is performed by locating full frame conceal and reveal areas, determining intermediate frame occlusion areas of an interpolated frame of the displayable output by locating intermediate frame conceal areas based on projected locations of pixels within the full frame conceal areas using primary forward motion vectors and information about a time slot for the interpolated frame, and by locating intermediate frame reveal areas based on projected locations of pixels within the full frame reveal areas using primary backward motion vectors and information about the time slot for the interpolated frame. The intermediate frame conceal areas are then modified by projecting locations of pixels using secondary forward motion vectors and the intermediate frame reveal areas are modified by projecting locations of pixels using secondary backward motion vectors.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: September 24, 2013
    Assignee: STMicroelectronics, Inc.
    Inventor: Gordon Petrides
  • Patent number: 8379240
    Abstract: When a printer starts a printing operation using a rolled sheet having IC chips, it is determined whether an error occurred while an IC chip writing device writes information to the IC chips. First page information specifying a page region in which an error occurred and second page information specifying a page region which has been subjected to the printing operation using the printer at a time of occurrence of the error are transmitted to a host computer. Then, recovery information generated using the host computer is obtained, and a print restarting position of a recording medium is controlled so that an information writing position at the time of occurrence of the error corresponds to a position in which the printing operation is restarted. Thereafter, the printing operation is restarted from the printing restarting position in accordance with the recovery information.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: February 19, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kinya Honda
  • Patent number: 8331723
    Abstract: Signal processing techniques are applied to digital image data to remove the distortion caused by motion of the camera, or the movement of the subject being photographed, or defective optics, or optical distortion from other sources. When the image is captured, the effect of relative motion between the camera and the subject is that it transforms the true image into a blurred image according to a 2-dimensional transfer function. The 2-dimensional transfer function representing the motion is derived using blind estimation techniques or by using information from sensors that detect the motion. The transfer function is inverted and used to define a corrective filter. The filter is applied to the image and the blur due to the motion is removed, restoring the correct image. Another embodiment uses the transfer function to avoid blur by combining multiple consecutive images taken at a fast shutter speed.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: December 11, 2012
    Inventor: Fatih M. Ozluturk
  • Patent number: 8319888
    Abstract: A method of determining field dominance in a sequence of video frames, the method comprising: generating from a first video frame a top field and a bottom field; interpolating the top and bottom fields to produce an interpolated top field frame and an interpolated bottom field frame respectively; correlating each of the interpolated top field frame and interpolated bottom field frame with a second video frame occurring immediately previous to the first video frame in the sequence of video frames and with a third video frame occurring immediately subsequent to the first video frame in the sequence of video frames; and determining from the outcome of the correlation the field dominance of the sequence of video frames.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: November 27, 2012
    Assignee: Tektronix, Inc.
    Inventors: Premkumar Elangovan, Oliver Barton
  • Patent number: 8035746
    Abstract: The present invention relates to a method for time base correction during generation of a digital video signal from an analog input video signal, and to an apparatus having means for digitizing an analog input video signal using such method. According to the invention, the method includes the steps of: receiving an analog video signal; generating a digital video signal from the analog video signal with a video decoder; storing at least a part of the digital video signal in a memory; detecting a portion of corrupt data having an abnormal field ordering in the digital video signal; either discarding the portion of corrupt data or replacing at least a part of the portion of corrupt data with previous data stored in the memory; and outputting the digital video signal.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: October 11, 2011
    Assignee: Thomson Licensing
    Inventors: Li Bin Cai, Boon Keng Teng
  • Publication number: 20110211125
    Abstract: In one embodiment of the present invention, motion compensated interpolation is performed by locating full frame conceal and reveal areas, determining intermediate frame occlusion areas of an interpolated frame of the displayable output by locating intermediate frame conceal areas based on projected locations of pixels within the full frame conceal areas using primary forward motion vectors and information about a time slot for the interpolated frame, and by locating intermediate frame reveal areas based on projected locations of pixels within the full frame reveal areas using primary backward motion vectors and information about the time slot for the interpolated frame. The intermediate frame conceal areas are then modified by projecting locations of pixels using secondary forward motion vectors and the intermediate frame reveal areas are modified by projecting locations of pixels using secondary backward motion vectors.
    Type: Application
    Filed: March 1, 2010
    Publication date: September 1, 2011
    Applicant: STMicroelectronics, Inc.
    Inventor: Gordon PETRIDES
  • Patent number: 7852412
    Abstract: Circuits, methods, and apparatus for measuring a video signal's noise level. The determination can be made based on pixel values for a single video image frame, for example, by comparing pixel color values, luminance, or other parameter for a first and second group of pixels in the frame. Each group of pixels may be part of a line in the frame, and several such measurements may be made along each line of the frame. These measurements can then be further refined depending on the measure noise level. Once a video noise level is determined, a decision on how to further process the video signal can be made. For example, the picture can be filtered or sharpened. The amount of noise filtering can be made dependent on the amount of noise measured.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: December 14, 2010
    Assignee: NVIDIA Corporation
    Inventors: Miguel A. Guerrero, Stephen D. Lew, Gerrit A. Slavenburg
  • Patent number: 7738042
    Abstract: A noise reduction device for generating a delay frame by delaying an input frame in each frame, a first difference value between the delay frame and the input frame, a line delay frame by delaying the input frame in each line, and a second line delay frame by delaying the delay frame in each line. The device generates a second difference value between the input frame and the line delay frame, a third difference value between the delay frame and the second line delay frame, a fourth difference value between the line delay frame and the second line delay frame. The device corrects the input frame by using the first difference value based on a logical sum (or product) of the third difference value and the fourth difference value, and the delay frame based on a logical sum (or product) of the second difference value and the fourth difference value.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: June 15, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Shigeki Kamimura
  • Patent number: 7646435
    Abstract: The invention relates to the reproduction of a television signal on a distant reproduction device. The received television signal is encoded and transmitted in a digital data format over a communication link to the reproduction device. The reproduction device decodes the received video information for display on a display screen. The invention is particularly intended for use in mobile vehicles, coaches and trains, where the signal strength of a received television signal during travel is continuously varying and signal distortions occur frequently. In order to reduce the effect of signal distortions on the perceived image and audio quality, the invention inserts a compressed pre-stored video or audio data into the data stream transmitted from the television receiver to the reproduction device upon detection of a television signal distortion. Thus, the decoding procedure at the display device can be maintained in spite of a received television signal of insufficient signal strength.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: January 12, 2010
    Assignee: Harman Becker Automotive Systems GmbH
    Inventors: Detlef Teichner, Hermann Link
  • Patent number: 7576771
    Abstract: Video control signals are received at a video input port of a system. A determination is made whether the video control signals are valid or invalid. When video control signals represent a valid video signal, providing a delayed representation of a control signal to a synchronization input of a display engine of the system, and when the video control signals represent an invalid video signal, providing a an alternative signal to the synchronization input of the display engine.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: August 18, 2009
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Kenneth J. Kotlowski, Daniel Daugherty
  • Patent number: 7573535
    Abstract: Disclosed is an image data processing method capable of reducing visual discomfort perceived by users in the recovery from a receive error in a receiver. According to the image data processing method, in recovery processing of a video motion damper system in an image data processing circuit, a frequency of occurrence of the receive error before and after the time of recovery from the receive error is judged. According to the judgment result, the time period for switching of the output tap in recovery processing is adjusted. When the frequency of occurrence of the receive error is high, the recovery processing is halted until the selected tap position during the recovery is returned to the output tape position of the first FIFO of a frame memory.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: August 11, 2009
    Assignee: Pioneer Corporation
    Inventor: Koji Shibata
  • Patent number: 7567724
    Abstract: The present invention is applied, for example, to resolution conversion. An edge gradient direction v1 with the largest gradient of pixel values and an edge direction v2 orthogonal to the edge gradient direction v1 are detected. Edge enhancement and smoothing processing are performed in the edge gradient direction v1 and in the edge direction v2, respectively, to generate output image data D2.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: July 28, 2009
    Assignee: Sony Corporation
    Inventors: Shinichiro Gomi, Masami Ogata, Kazuhiko Ueda
  • Patent number: 7495708
    Abstract: The present invention proposes a method for generating a digital video signal from an analog input video signal, which prevents picture jitter in the digitized video signal when the analog input video signal is not in complete conformity with a standard. According to the invention, the method includes the steps of: detecting the type of signal source; in case the type of signal source is a non-standard type, detecting the existence of an error state; converting the analog input video signal to a digital video signal; in case an error state exists, replacing an error prone part of the digitized video signal with a substitute signal part; and in case the type of signal source is a standard type or no error state exists, keeping the digitized video signal unchanged.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: February 24, 2009
    Assignee: Thomson Licensing
    Inventors: Chee Lam Tan, Hua Li, Frank Dumont
  • Patent number: 7432985
    Abstract: Pixels in a window, which corresponds to the position of an input pixel and has a predetermined size, are extracted from a reduced image obtained by reducing an input image to a predetermined scale. Substitute data used to substitute the value of the input pixel is generated based on the extracted pixels in the window. The difference value between the substitute data and input pixel value is calculated and is compared with a first threshold value. When the difference value is smaller than the first threshold value, the input pixel value is substituted by the substitute data. Thus, low-frequency noise reduction can be attained using a minimum required memory size while suppressing adverse effects such as a resolution drop and the like.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: October 7, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hisashi Ishikawa, Makoto Fujiwara, Masao Kato, Tetsuya Suwa, Fumitaka Goto, Kazuya Imafuku
  • Publication number: 20080186404
    Abstract: A temporal error concealment is described. A video stream comprises a current frame comprising a lost image region, and a reference frame. The method comprises forming a list of motion vector candidates, the list of motion vector candidates including a set of one or more motion vectors from the current frame and a set of one or more motion vectors from the reference frame; testing each of the motion vector candidates using a matching error measure; selecting a replacement motion vector from the list based on the matching error measures; and using the selected replacement motion vector to conceal the lost image region. A mode selection method is also described. A motion vector is used to identify a motion compensated reference image region in the reference frame. A motion compensated temporal activity of an image region in the current frame is calculated based on a comparison between the image region in the current frame and the motion compensated reference image region in the reference frame.
    Type: Application
    Filed: January 6, 2006
    Publication date: August 7, 2008
    Applicant: Provision Communication Technologies Limited
    Inventors: David Roger Bull, Dimitris Agrafiotis
  • Publication number: 20080084505
    Abstract: A dust removal apparatus of a photographing apparatus comprises a movable unit, a detector, and a controller. The movable unit has an imaging device and is movable. The detector is used for specifying a holding position of the photographing apparatus in relationship to the direction of gravity. The controller moves the movable unit on a plane that is parallel to a first direction and a second direction. The first direction is perpendicular to an optical axis of a photographing optical system that captures an optical image on a photographing surface of the imaging device. The second direction is perpendicular to the optical axis. The controller strikes the movable unit against a boundary of a range of movement of the movable unit in one of the first direction and the second direction, on the basis of the holding position, as a dust removal operation.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 10, 2008
    Applicant: c/o PENTAX Corporation
    Inventor: Yukio UENAKA
  • Patent number: 7333117
    Abstract: Disclosed are a method of compensating colors in an image display device for users with color vision deficiency and a device of the same, enabling the users with color vision deficiency to view display images as vividly and naturally as normal users. The method for compensating colors in an image display device includes a step of determining whether a user is partially color blind or normal, and a step of controlling gain values of a plurality of color signals depending upon the user's color perceptivity so as to compensate colors displayed on a screen, if the user is determined to be partially color blind.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: February 19, 2008
    Assignee: LG Electronics Inc.
    Inventor: Hee Chul Kim
  • Patent number: 7321400
    Abstract: A method for determining a value for a missing target pixel in an image frame includes generating a classification index from a plurality of classification pixels in a classification window associated with the missing target pixel where the classification index indicates whether a recognizable pattern is detected in the classification window, using the classification index to select a filter index via a lookup table associated with the classification index, using the selected filter index to select a set of filter coefficients via a lookup table associated with the filter index, and calculating the value for the missing target pixel using the selected set of filter coefficients.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: January 22, 2008
    Assignee: Kolorific, Inc.
    Inventors: Chih-Hsien Chou, Chang-Hau Lee
  • Patent number: 7202894
    Abstract: An image processing system and method compares each pixel of an image obtained from an image sensor array with at least eight surrounding pixels of the same color in the filter array. If the signal of a given pixel is larger than the respective signals of all eight surrounding pixels of the same color, then the value of that central pixel signal is substituted with the maximum signal value among the surrounding eight pixels of the same color. Similarly, if the signal of a given pixel is smaller than the respective signals of all eight surrounding pixels of the same color, then the value of that central pixel signal is substituted with the minimum signal value among the surrounding eight pixels of the same color.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: April 10, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Michael Kaplinsky, Igor Subbotin
  • Patent number: 7190409
    Abstract: An electro-optical device and a method for displaying an image are disclosed. A clear image with a clear profile can be displayed therein by processing input image data, for example input image data of TV broadcasting received by the device.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: March 13, 2007
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunepi Yamazaki, Akira Mase, Masaaki Hiroki, Yasuhiko Takemura
  • Patent number: 7142253
    Abstract: The invention relates to a method for processing data of video pictures for displaying the pictures on a display device like a Plasma Display Panel. The existing false contour effect compensation methods which make a false contour compensation based on shifting sub-field code word entries along the direction of the motion vector of a current pixel, produce an artifact in the pictures, in case of object crossings. In the appearing area there is a lack of light generation. The invention solves this problem by checking whether an area exists in the picture which is currently hidden but will appear in a next frame and providing an adapted compensation method for “hole filling”. The invention also gives a solution for an improved compensation method which is based on a dragging of sub-field code word entries along a motion vector direction to a current pixel.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: November 28, 2006
    Assignee: Thomson Licensing
    Inventors: Sebastien Weitbruch, Carlos Correa, Rainer Zwing
  • Patent number: 7127120
    Abstract: Systems and methods to automatically edit a video to generate a video summary are described. In one aspect, sub-shots are extracted from the video. Importance measures are calculated for at least a portion of the extracted sub-shots. Respective relative distributions for sub-shots having relatively higher importance measures as compared to importance measures of other sub-shots are determined. Based on the determined relative distributions, sub-shots that do not exhibit a uniform distribution with respect to other sub-shots in the particular ones are dropped. The remaining sub-shots are connected with respective transitions to generate the video summary.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: October 24, 2006
    Assignee: Microsoft Corporation
    Inventors: Xian-Sheng Hua, Lie Lu, Yu-Fei Ma, Mingjing Li, Hong-Jiang Zhang
  • Patent number: 7068325
    Abstract: The present invention relates to a video signal processing device for avoiding a phenomenon that noise is upwardly or downwardly shifted due to noise reducing operation when a non-standard signal is input. When a non-standard signal is input as an input video signal, coefficients of interpolating filters for carrying out interpolation on pixels of timely-sequential field video signals are fixed as a non-standard signal supporting signal processing. With this processing, interpolated pixels achieved by the interpolation processing are located at the same vertical spatial position, and pixels which are noise-reduced by the interpolated pixels are located at the same vertical spatial position as pixels before original noise is reduced, thereby locating the pixels at the same horizontal position.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: June 27, 2006
    Assignee: Sony Corporation
    Inventors: Yukinori Gengintani, Hisafumi Motoe
  • Patent number: 7065288
    Abstract: The present invention is a system and method that facilitates the reduction of presentation glitches in a digital video system. The present invention is a system and method that automatically determines if digital video (DV) data is missing from a stream of DV information and replaces or patches missing DV data with appropriate information to reduce the appearance of interruptions in the video (e.g., glitches in presentations). A communication packet carrying application data is received by an application data patching computer system. In one embodiment of the present invention, an IEEE standard 1394 compliant isochronous packet carrying digital video information is received. The application data (e.g., DV information) is separated from other communication packet protocol data (e.g., IEEE standard 1394 compliant header information). The received application data is analyzed to determine if it conforms to configuration constraints of predetermined application data format requirements.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: June 20, 2006
    Assignees: Sony Corporation, Sony Electronics, Inc.
    Inventor: Xin Xue