Including Compensation For Transmission Delays Patents (Class 348/518)
  • Patent number: 10645258
    Abstract: Focal plane distortion is prevented from standing out in the vicinity of a joint when a plurality of captured images are stitched and synthesized. A plurality of cameras are provided. Each camera includes an image sensor that outputs a signal by a raster scan scheme. Phases of a vertical synchronization signal supplied to the image sensors of the plurality of cameras are respectively shifted according to information of gap amounts of captured images of the respective cameras from a reference position in a vertical direction. Even if there are gaps in the vertical direction between the installed cameras, positional gaps between the installed image sensors due to variations in individual camera main bodies, and the like, there are no lines with largely different capture times in the vicinity of a joint of a synthesized image, and focal plane distortion is prevented from standing out in the vicinity of this joint.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: May 5, 2020
    Assignee: SONY CORPORATION
    Inventors: Tetsuo Kaneko, Kazuhiro Uchida, Shigeo Nakatsuka, Shinnosuke Usami, Yasuhiro Iizuka
  • Patent number: 10200741
    Abstract: A data processing device, includes a bus, a demultiplexer which receives content including video data and audio data. A memory interface which is coupled to the bus, and which is connectable to a memory for temporarily accumulating the video data and the audio data output from the demultiplexer.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: February 5, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Masami Tako, Naohiro Nishikawa, Yuichi Takagi
  • Patent number: 9521450
    Abstract: At the time of device starting or channel switching in a content output device, even when buffering of a sufficiently large size is performed in order to address multimedia processing at the time of start of a device and content switching, slow reproduction in which video and audio are synchronized with each other can be performed without keeping a user waiting for a long time, and at an arbitrary reproduction rate with the extent of not giving the user feeling of unnaturalness. The broadcasting reception unit initializes the delay amount to a predetermined start value, then gradually increases it with lapse of time, and stops the increase when the delay amount reaches a predetermined end value. Video and audio are synchronously and slowly reproduced at a reproduction rate decided by an increment per unit time of the delay amount.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: December 13, 2016
    Assignee: Renesas Electronics Corporation
    Inventors: Masami Tako, Naohiro Nishikawa, Yuichi Takagi
  • Patent number: 9338480
    Abstract: According to some embodiments, systems, methods, apparatus and means are provided to determine an amount of a delay when transmitting a signal from a remote broadcast location to a studio location over a transmission link, operate a delay engine to insert the amount of the delay in a studio audio/video feed, and operate a switch to switch from the studio audio/video feed to a remote audio/video feed, the delay in the studio audio/video feed inserted prior to the switch.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: May 10, 2016
    Assignee: DISNEY ENTERPRISES, INC.
    Inventors: David Andrew Duennebier, Samuel Joseph Reisner
  • Patent number: 9198557
    Abstract: A phase control unit compares a phase of a display synchronization signal with a phase of a clock signal generated from a clock signal generated by an imaging clock generating unit, and controls oscillation of the imaging clock generating unit based on a result of the comparison. A drive signal generating unit generates a drive signal that drives a CMOS sensor based on a multiplication clock signal synchronized to the clock signal.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: December 1, 2015
    Assignee: OLYMPUS CORPORATION
    Inventors: Kazuhiro Takizawa, Motoo Azuma, Hisashi Nishimura, Kaoru Kotoda, Satoshi Tanaka, Takayuki Sato, Naruyasu Kobayashi
  • Patent number: 9013632
    Abstract: Systems and methods are operable to correct synchronization between a video stream and an audio stream presented to a user. An exemplary embodiment receives a synchronization correction instruction, wherein the synchronization correction is configured to be initiated by the user; and incrementally adjusts one of the video stream and the audio stream by a synchronization correction, wherein the synchronization correction advances or retards presentation of at least one of the video stream and the audio stream by a predefined duration.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: April 21, 2015
    Assignee: EchoStar Broadcasting Corporation
    Inventor: Kevin Yao
  • Publication number: 20150085191
    Abstract: Provided are a video display device and a method of controlling the same. The method includes: obtaining an uncompressed audio-visual (AV) content; playing the uncompressed AV content through the display unit; obtaining content information of the uncompressed AV content on the basis of a content section of the uncompressed AV content; obtaining content change time information and enhanced service information on the basis of the content information; and determining a delay time for obtaining the next content information on the basis of the content change time information.
    Type: Application
    Filed: November 28, 2014
    Publication date: March 26, 2015
    Inventors: Sanghyun KIM, Jongyeul SUH, Kwansuk KIM, Joonhui LEE, Jaehee CHUNG, Hyeonjae LEE, Jinpil KIM, Dongwan SEO, Kyoungsoo MOON, Aettie JI, Youngjae SEO, Kyungho KIM, Sungok PARK
  • Patent number: 8964119
    Abstract: Methods and apparatuses are provided for transmitting and receiving multimedia contents that include at least two components (C1, C2). The reception method entails the reception of a first component (C1) from a first transmission medium (DVB) and the reception of a second component (C2) from a second transmission medium (IP), as well as the steps of: detecting (A4) a first “watermark” sequence from the first component (C1), detecting (A4) a second “watermark” sequence from the second component (C2), synchronizing (A5) the first and second components (C1, C2) on the basis of the first and second “watermark” sequences, and combining (A6) the synchronized first and second components (C1, C2) to form the multimedia content (MM); of course, the reception method provides the desired results if both components have been suitably and repeatedly marked prior to transmission.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: February 24, 2015
    Assignees: CSP-Innovazione Nelle ICT Scarl, S.I.SV.EL Societa' Italiana per lo Sviluppo Dell'Elettronica S.p.A.
    Inventors: Sergio Sagliocco, Leonardo Sileo, Roberto Borri
  • Patent number: 8957972
    Abstract: Disclosed is a method and tool that performs glass-to-glass testing of a test AV system. The test AV system may be a transmitter device that senses AV stimuli and transmits an AV signal to a receiver device that displays video and provides an audio out/speaker of the audio. A light source and a sound source may be placed at the transmitter device. A light sensor and microphone/direct audio out connection may be placed at the receiver device. The automatic test tool may cycle synchronized light/sound stimuli to the transmitter device and measure the delay/latency times for audio, video, and AV synchronization at the receiver device. The automatic test tool may be comprised of a computer running user interface/test management software connected to a low cost FPGA that controls the video/sound sources and sensors to accurately measure both video and audio glass-to-glass latency/synchronization in a continuous, automatic, and self-calibrating manner.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: February 17, 2015
    Assignee: Avaya Inc.
    Inventors: Dan Gluskin, Michael German, Itai Ephraim Zilbershtein, Yosef Goldberg, Michel Ivgi
  • Publication number: 20150002741
    Abstract: Provided are a video display device and a method of controlling the same. The method includes: obtaining an uncompressed audio-visual (AV) content; playing the uncompressed AV content through the display unit; obtaining content information of the uncompressed AV content on the basis of a content section of the uncompressed AV content; obtaining content change time information and enhanced service information on the basis of the content information; and determining a delay time for obtaining the next content information on the basis of the content change time information.
    Type: Application
    Filed: July 9, 2014
    Publication date: January 1, 2015
    Inventors: Sanghyun KIM, Jongyeul SUH, Kawansuk KIM, Joonhui LEE, Jaehee CHUNG, Hyeonjae LEE, Jinpil KIM, Dongwan SEO, Kyoungsoo MOON, Aettie JI, Youngjae SEO, Kyungho KIM, Sungok PARK
  • Patent number: 8917355
    Abstract: A method and computing system for receiving a first video file containing a first plurality of video frames. A second video file containing a second plurality of video frames is received. The video files are processed to identify at least one non-graphical temporal alignment object included in each of the video files. The video files are temporally aligned using the at least one non-graphical temporal alignment object to produce temporally-aligned video files.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: December 23, 2014
    Assignee: Google Inc.
    Inventors: Vincent Mo, David Cohen, Aravind Krishnaswamy
  • Patent number: 8913189
    Abstract: Audio data and video data are processed to determine one or more audible events and visual events, respectively. Contemporaneous presentation of the video data with audio data may be synchronized based at least in part on the audible events and the visual events. Audio processing functions, such as filtering, may be initiated for audio data based at least in part on the visual events.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: December 16, 2014
    Assignee: Amazon Technologies, Inc.
    Inventors: Richard William Mincher, Todd Christopher Mason
  • Patent number: 8854542
    Abstract: Methods and systems for implementing video driving circuitry are disclosed. For example, in an embodiment, a system for driving a plurality of different types of video devices is disclosed. The system includes, for example, a System on a Chip (SoC) that itself includes a Liquid Crystal Display (LCD) controller circuit configured to generate digital video data, a first synchronization signal for controlling a first characteristic of the digital video data, and a second synchronization signal for controlling a second characteristic of the digital video data. The SoC further includes a delay circuit configured to variably delay the first synchronization signal and the second synchronization signal relative to the digital video data to generate a delayed first synchronization signal and a delayed second synchronization signal.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: October 7, 2014
    Assignee: Marvell Israel (M.I.S.L) Ltd.
    Inventors: Dan Ilan, Guy Nakibly, Eilon Argov
  • Patent number: 8850500
    Abstract: Presented herein is a method of presenting alternative audio content for an audio/visual content segment, such as a television program or a motion picture. In the method, the audio/visual content segment is received into a media content receiver. The audio/visual content segment includes primary visual content and primary audio content. A request to receive alternative audio content for the audio/visual content segment is transmitted. After transmitting the request, the alternative audio content is received into the media content receiver. The primary audio content is replaced with the alternative audio content to generate a revised audio/visual content segment. The revised audio/visual content is transferred for presentation to a user.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: September 30, 2014
    Assignee: EchoStar Technologies L.L.C.
    Inventors: Steven M. Casagrande, Anthony F. Kozlowski
  • Patent number: 8848108
    Abstract: Provided are a video display device and a method of controlling the same. The method includes: obtaining an uncompressed audio-visual (AV) content; playing the uncompressed AV content through the display unit; obtaining content information of the uncompressed AV content on the basis of a content section of the uncompressed AV content; obtaining content change time information and enhanced service information on the basis of the content information; and determining a delay time for obtaining the next content information on the basis of the content change time information.
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: September 30, 2014
    Assignee: LG Electronics Inc.
    Inventors: Sanghyun Kim, Jongyeul Suh, Kwansuk Kim, Joonhui Lee, Jaehee Chung, Hyeonjae Lee, Jinpil Kim, Dongwan Seo, Kyoungsoo Moon, Aettie Ji, Youngjae Seo, Kyungho Kim, Sungok Park
  • Patent number: 8743293
    Abstract: An audio/video system includes a display having a plurality of input sources and a first peripheral device connected to one of the input sources. The display provides a user interface for receiving a switching command for switching current input source of the display among the input sources from a user, and the display automatically generates a first standby command to the first peripheral device when the received switching command is not switching the current input source to the input source corresponding to the first peripheral device.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: June 3, 2014
    Assignee: AmTran Technology Co., Ltd
    Inventors: Chin-Chiang Chang, Kuang-Cheng Chao, Wei-Wen Mai, Chien-Cheng Lin, Min-I Chen, Wen-Kang Wei
  • Patent number: 8717499
    Abstract: Systems and methods of measuring a temporal offset between audio content and video content that employ audio fingerprints from an audio signal in the audio content, and video fingerprints from video frames in the video content. The systems obtain reference audio and video fingerprints prior to transmission of video over a media channel, and obtain target audio and video fingerprints subsequent to transmission of the video over the media channel. Each fingerprint has an associated time stamp. Using the reference and target audio fingerprints and their associated time stamps, the systems determine an audio time stamp offset. Using the reference and target video fingerprints and their associated time stamps, the systems determine a video time stamp offset. Using the audio and video time stamp offsets, the systems determine a temporal offset between the video content and the audio content introduced by the media channel.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: May 6, 2014
    Assignee: Dialogic Corporation
    Inventors: Jeffrey A. Bloom, Dekun Zou, Ran Ding
  • Publication number: 20140118618
    Abstract: There is provided a transmission apparatus including a video signal transmission unit configured to transmit a video signal to another apparatus, a time information reception unit configured to receive, from the other apparatus, time information including a duration from reception of the video signal until a timing at which display of each frame in the video signal starts at the other apparatus, and a degree-of-redundancy determination unit configured to determine a degree of redundancy for the video signal transmitted from the video signal transmission unit based on the time information received by the time information reception unit.
    Type: Application
    Filed: October 25, 2013
    Publication date: May 1, 2014
    Applicant: Sony Corporation
    Inventor: Sanjeewa Ranatunga
  • Patent number: 8711886
    Abstract: The invention concerns a device for transmitting packets in a packet communication network comprising at least two stations, characterized in that it includes means for: extract image cues from a synchronizing signal, initializing a first counter based on said image cues, initializing a second counter every “m” zero crossing of the first counter, sampling the second counter at all the Tech periods, where Tech is derived from a time base synchronized on all the network stations, and transmitting packets containing the samples in the network. The invention also concerns a device for receiving packets in a packet communication network comprising at least two stations.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: April 29, 2014
    Assignee: Thomson Licensing
    Inventors: Thierry Tapie, Serge Defrance, Bertrand Huguies
  • Patent number: 8677437
    Abstract: The embodiments described herein provide a method and system for determining the extent to which a plurality of media signals are out of sync with each other.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: March 18, 2014
    Assignee: Evertz Microsystems Ltd.
    Inventor: Jeff Wei
  • Patent number: 8643781
    Abstract: Methods and systems for implementing video driving circuitry are disclosed. For example, in an embodiment, a system for driving a plurality of different types of video devices is disclosed. The system includes, for example, a System on a Chip (SoC) that itself includes a Liquid Crystal Display (LCD) controller circuit configured to generate digital video data, a first synchronization signal for controlling a first characteristic of the digital video data, and a second synchronization signal for controlling a second characteristic of the digital video data. The SoC further includes a delay circuit configured to variably delay the first synchronization signal and the second synchronization signal relative to the digital video data to generate a delayed first synchronization signal and a delayed second synchronization signal.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 4, 2014
    Assignee: Marvell Israel (M.I.S.L) Ltd.
    Inventors: Dan Ilan, Guy Nakibly, Eilon Argov
  • Publication number: 20140028915
    Abstract: Provided are a video display device and a method of controlling the same. The method includes: obtaining an uncompressed audio-visual (AV) content; playing the uncompressed AV content through the display unit; obtaining content information of the uncompressed AV content on the basis of a content section of the uncompressed AV content; obtaining content change time information and enhanced service information on the basis of the content information; and determining a delay time for obtaining the next content information on the basis of the content change time information.
    Type: Application
    Filed: November 24, 2011
    Publication date: January 30, 2014
    Applicant: LG Electronics Inc.
    Inventors: Sanghyun Kim, Jongyeul Suh, Kwansuk Kim, Joonhui Lee, Jaehee Chung, Hyeonjae Lee, Jinpil Kim, Dongwan Seo, Kyoungsoo Moon, Aettie Ji, Youngjae Seo, Kyungho Kim, Sungok Park
  • Patent number: 8549569
    Abstract: Presented herein is a method of presenting alternative audio content for an audio/visual content segment, such as a television program or a motion picture. In the method, the audio/visual content segment is received into a media content receiver. The audio/visual content segment includes primary visual content and primary audio content. A request to receive alternative audio content for the audio/visual content segment is transmitted. After transmitting the request, the alternative audio content is received into the media content receiver. The primary audio content is replaced with the alternative audio content to generate a revised audio/visual content segment. The revised audio/visual content is transferred for presentation to a user.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: October 1, 2013
    Assignee: EchoStar Technologies L.L.C.
    Inventors: Steven M. Casagrande, Anthony F. Kozlowski
  • Patent number: 8531603
    Abstract: A system and method for characterizing the relative offset in time between audio and video signals and enables the receiver of the audio and video signals to resynchronize the audio and video signals. Signal characterization data is dynamically captured and encoded into frames of video and audio data that is output by a television origination facility. The signal characterization data is extracted by the receiver and signal characterization data is recomputed for the received frames. The extracted signal characterization data is compared with the recomputed signal characterization data to compute the relative offset in time between the video and one or more audio signals for a frame. The receiver may then resynchronize the video and audio signals using the computed relative offset.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: September 10, 2013
    Assignee: Disney Enterprises, Inc.
    Inventors: Michael J. Strein, Efthimis Stefanidis, James L. Jackson
  • Patent number: 8531375
    Abstract: A display device includes a display panel, a control circuit and a random number generating circuit. The random number generating circuit includes a plurality of shift registers, an output circuit, and registers which holds initial values. By providing a plurality of initial values, the randomness of random numbers can be enhanced. Further, the random numbers different from each other can be outputted from the plurality of shift registers and hence, it is possible to increase the frequency and to output the increased frequency by an output circuit. Further, by adding a noise control signal which suppresses the number of inversion of a digital signal, electromagnetic wave noises generated from a liquid crystal display device can be reduced. Further, by adopting an intermittent drive clock which intermittently repeats stopping thereof as a basic clock of the plurality of shift registers, electromagnetic wave noises generated from the display device can be reduced.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: September 10, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Fumiaki Komori
  • Patent number: 8525885
    Abstract: A system to perform automated audio visual (AV) delay measurement for a system under test (SUT) includes a test pattern generator to generate a dynamic AV test pattern and connected to a source display device and to one or more destination video display devices; at least one light sensor coupled to the one or more destination video display devices; an AV capture device having video inputs connected to the light sensors; and an AV delay analyzer coupled to the AV capture device to perform multi-channel delay parameters analysis.
    Type: Grant
    Filed: May 15, 2011
    Date of Patent: September 3, 2013
    Assignee: Videoq, Inc.
    Inventors: Victor Steinberg, Michael Shinsky
  • Patent number: 8493307
    Abstract: To realize a random number generating circuit that is optimum for a liquid crystal display device that is used in a terminal device that includes a display/input component. A liquid crystal display device includes a liquid crystal display panel, a control circuit and a random number generating circuit, the random number generating circuit comprises plural shift registers, an output circuit and a register that stores an initial value, and the random number generating circuit is equipped with plural initial values, whereby the randomness of the random numbers is improved. Further, it becomes possible to increase and output frequencies by the output circuit because it is possible to output respectively different random numbers from the plural shift registers.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: July 23, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Noboru Kataoka, Fumiaki Komori, Takashi Watanabe, Futoshi Furuta, Hiroshi Kageyama
  • Patent number: 8456531
    Abstract: Video alignment and calibration, which is needed for video quality measurement in full-reference mode, is performed continuously on the videos being measured to account for alignment parameters that may change over time. With this technique, the quality of video files and/or live video streams can be measured in full-reference mode in real-time. During video alignment, the temporal and spatial offsets, as well as any spatial, luminance or color transformations between the two videos are measured; during video calibration, the video frames are adjusted for these offsets and transformations so that the video quality can be measured correctly.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: June 4, 2013
    Assignee: Cheetah Technologies, L.P.
    Inventor: Stefan Winkler
  • Patent number: 8436939
    Abstract: Embodiments of the present invention provide systems and methods for non-invasive, “in-service” AV delay detection and correction. These systems and methods do not modify the audio signal or the video signal, nor do they rely on any metadata to be carried with the audio signal or the video signal via the distribution path. Instead, agents located at various points along the distribution path generate very small signature curves for the audio signal and the video signal and distribute them to a manager via a separate data path other than the distribution path. The manager calculates a measured AV delay caused by the distribution path based on these signature curves, and then optionally corrects the measured AV delay by adjusting an in-line delay in the distribution path.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: May 7, 2013
    Assignee: Tektronix, Inc.
    Inventor: Daniel G. Baker
  • Patent number: 8436938
    Abstract: A device is described for receiving data transmitted using asynchronous data transmission technology, in particular audio and video data, which receives a clock signal, having a memory device (17), which stores the received data for the required period of time in order to compensate for transmission delays (Cell Delay Variation). The clock signal is sent to the memory device (17) for reading out the data. Furthermore, a method is described for receiving data signals using asynchronous data transfer technology, with the received data signals being temporarily stored and read out at the studio clock rate.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: May 7, 2013
    Assignee: Deutsche Telekom AG
    Inventors: Ulf Assmus, Michael Roth
  • Patent number: 8421927
    Abstract: A display device includes a display panel, a light source module and a skin-color detector. The display panel has a plurality of sub pixel units, and the sub pixel units include red sub pixel units, green sub pixel units, blue sub pixel units and white sub pixel units. The light source module is disposed at a side of the display panel and the light source module includes a white light source and a yellow light source distributed in the white light source. The skin-color detector is electrically connected to the display panel, wherein the skin-color detector detects the skin-color area proportion of an image signal of the display panel.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: April 16, 2013
    Assignee: Au Optronics Corporation
    Inventors: Yen-Tao Liao, Wei-Chieh Sun, Sheng-Wen Cheng
  • Patent number: 8406288
    Abstract: A digital video apparatus provides reduced channel change times. According to an exemplary embodiment, the digital video apparatus includes at least one receiver for receiving first and second video streams representing the same program, wherein the first video stream has at least one characteristic different from the second video stream; a first signal processor for processing the first video stream to generate a first processed video stream; a second signal processor for processing the second video stream to generate a second processed video stream having a delay with respect to the first processed video stream; a renderer for rendering the second processed video stream responsive to a channel change command; and a switch for switching from the second processed video stream to the first processed video stream after the renderer begins rendering the second processed video stream, and thereby causing the renderer to begin rendering the first processed video stream.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: March 26, 2013
    Assignee: Thomson Licensing
    Inventors: Jiwang Dai, Glenn Lawrence Cash, Alan Jay Stein
  • Patent number: 8345160
    Abstract: A synchronous signal conversion circuit converts a first synchronous signal, which is transmitted with a data signal, to a second synchronous signal conforming to a predetermined standard. In the synchronous signal conversion circuit, a transition detection circuit detects transition of the first synchronous signal. A synchronous signal generation circuit generates a second synchronous signal in response to a detection result by the transition detection circuit. An output timing control circuit delays the second synchronous signal generated by the synchronous signal generation circuit so that the second synchronous signal synchronizes with the data signal.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: January 1, 2013
    Assignee: Panasonic Corporation
    Inventor: Yuki Nishio
  • Patent number: 8330859
    Abstract: Measurement of the relative timing between images and associated information, for example video and audio. Image mutual event characteristics are recognized in the images and associated mutual event characteristics are recognized in the associated information. The image mutual events and associated mutual events are compared to determine their occurrences, one relative to the other as a measure of relative timing. Particular operation with audio and video signals is described.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: December 11, 2012
    Assignee: Pixel Instruments Corporation
    Inventors: J. Carl Cooper, Mirko Vojnovic, Maynard Grimm, Christopher Smith
  • Patent number: 8300147
    Abstract: A system and method for characterizing the relative offset in time between audio and video signals and enables the receiver of the audio and video signals to resynchronize the audio and video signals. Signal characterization data is dynamically captured and encoded into frames of video and audio data that is output by a television origination facility. The signal characterization data is extracted by the receiver and signal characterization data is captured for the received frames. The extracted signal characterization data is compared with the captured signal characterization data to compute the relative offset in time between the video and one or more audio signals for a frame. The receiver may then resynchronize the video and audio signals using the computed relative offset.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: October 30, 2012
    Assignee: Disney Enterprises, Inc.
    Inventors: Michael J. Strein, Efthimis Stefanidis, James L. Jackson
  • Patent number: 8294820
    Abstract: A video signal synchronization signal generating apparatus for making a display reference synchronization signal Vb that serves as a reference of video display and has a first frequency and an input synchronization signal Vi that constitutes images and has a second frequency synchronized with each other, the apparatus including: a frequency ratio generating section configured to divide a frequency that is double the first frequency by the second frequency to calculate a frequency ratio n; a Vx generation comparator circuit section configured to generate coincidence signal Vx? having pulses that are inserted by equally dividing one period of the input synchronization signal Vi by the frequency ratio n; and a Vx generation circuit section configured to remove the alternate pulses of the coincidence signal Vx? to generate synchronization signal Vx of a same phase as the phase of the input synchronization signal Vi.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: October 23, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuhiro Hori, Koichi Sato, Takeshi Inagaki
  • Patent number: 8264499
    Abstract: A method, system, and media are provided for enhancing viewability of information presented on a mobile device. The media includes presenting a user interface on a mobile device that includes foreground information that overlaps a background image. The background image may be converted into a first set of color values and the foreground information into a second set of color values. A dominant color may be determined for the background image and foreground information. The dominant colors may be used to calculate a contrast ratio that may be compared to a threshold value. At least a portion of the color values may be modified when the contrast ratio is less than the threshold value. A set of modified color values may then be derived and a modified presentation may be presented to the user that includes the modified color values.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: September 11, 2012
    Assignee: Sprint Communications Company L.P.
    Inventors: Shane Jeremy Landry, Harry H. Lai, Michael Joseph DeVries, Christine Schumaker
  • Patent number: 8253855
    Abstract: A method of automatic luminance-chrominance delay compensation is disclosed. The method generally includes the steps of (A) generating an intermediate signal by processing a video signal such as to enhance a plurality of edges in a picture within the video signal, the picture having a luminance component and a chrominance component temporally separated from each other by an actual delay, (B) identifying an estimated delay between the luminance component and the chrominance component by correlating the luminance component in the intermediate signal to the chrominance component in the intermediate signal at a plurality of relative delays and (C) compensating for the actual delay by delaying one of either (i) the luminance component and (ii) the chrominance component by the estimated delay.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: August 28, 2012
    Assignee: LSI Corporation
    Inventor: Daniel B. Ogilvie
  • Patent number: 8184723
    Abstract: A system and apparatus for compensating cable losses in a video signal transmission system includes feedback circuits to determine the spectral attenuation of a received signal and to control an equalizer circuit to amplify selected frequencies of the received signal, and to determine the various times of arrival of two or more video signals and selectively adjust one or more delay lines to reduce the differences in their arrival times.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: May 22, 2012
    Assignee: Analog Devices, Inc.
    Inventors: Gregory Lawrence DiSanto, Jonathan D. Pearson, Robert Briano
  • Patent number: 8174619
    Abstract: Disclosed herein is a reception apparatus including: a signal reception section configured to receive a video signal transmitted via a transmission path; an image display section configured to process the video signal to display an image; a timing information acquisition section configured to acquire timing information in connection with reception of the video signal, the timing information concerning timing that affects the image displayed by the image display section; a reference time length adjustment section configured to adjust a reference time length based on the timing information, the reference time length being used as a reference for a length of a time period from the reception of the video signal to start of image display; and a display control section configured to control timing at which the image display is started, based on the reference time length adjusted by the reference time length adjustment section.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: May 8, 2012
    Assignee: Sony Corporation
    Inventor: Takahiro Tomimitsu
  • Patent number: 8164689
    Abstract: A synchronizing signal control circuit includes: a phase detecting section configured to detect a phase difference between a display synchronizing signal and an input synchronizing signal; an adding section configured to add a set value for setting a synchronization compensation period and the detected phase difference; a synchronization phase correcting section configured to correct the phase of the input synchronizing signal on the basis of the output signal of the adding section; a gate signal generating section configured to generate a gate signal representing the synchronization compensation period based on the display synchronizing signal; a synchronization determining section configured to determine whether the synchronization can be effected, by detecting whether the input synchronizing signal exists within the synchronization compensation period; and a selecting section configured to perform switching to the corrected input synchronizing signal on the basis of the determination result of the synchron
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: April 24, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuhiro Hori, Koichi Sato
  • Patent number: 8144824
    Abstract: A method for determining a communication channel location is disclosed. A first subset of a plurality of channel impulse responses is averaged over a first time period to produce a first filtered channel impulse response, and a second subset of the plurality of channel impulse responses is averaged over a second time period to produce a second filtered channel impulse response. The second time period is different from the first time period, and the second subset is different from the first subset. The communication channel location is determined using the first filtered channel impulse response and the second filtered channel impulse response.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: March 27, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Bojan Vrcelj, Ashok Mantravadi, Fuyun Ling, Rajiv Vijayan, Michael Mao Wang
  • Patent number: 8072542
    Abstract: A correction sampling signal generation circuit is disposed subsequent to a plural-stage sampling signal generation circuit for sequentially generating sampling signals in response to an input timing signal, an extended sampling circuit is disposed subsequent to a plural-stage sampling circuit for sampling a video signal at timing of the sampling signal, and a data signal is sampled at timing of the sampling signal generated by the extended sampling circuit. In a timing adjustment period, the data signal for adjustment is generated, the phases of the data signal and the timing signal are relatively shifted, the outputs of the sampling circuits are supplied to a common output line through respective switches, and the phase of the optimum timing signal or the video signal is determined based on the output from the common output line.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: December 6, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masami Iseki, Somei Kawasaki, Fujio Kawano
  • Patent number: 8064470
    Abstract: Recorded material such as video is transmitted in compressed form to a receiver, which has a buffer for smoothing differences between the data rate received and that consumed by a decoder that follows. The whole of the recording is analysed to determine a point at which to commence playing such that no buffer underflow can occur; the decoder commences playing only when this point has been reached.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: November 22, 2011
    Assignee: British Telecommunications public limited company
    Inventors: Roberto Alvarez Arevalo, Rory S Turnbull
  • Patent number: 7982803
    Abstract: Provided is an audio video synchronizing apparatus and method in a video processing equipment. It is detected whether or not an external device connected to an audio/video output port of the video processing equipment is an audio system, and an audio signal synchronized with a video signal outputted to a display device of the video processing equipment is provided to the audio system through an audio output port when the detection result shows that the external device is the audio system. Accordingly, a vide signal on a screen is synchronized with an audio signal outputted from the audio system.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: July 19, 2011
    Assignee: LG Electronics Inc.
    Inventor: Jong Wook Lee
  • Patent number: 7948559
    Abstract: A method and apparatus for synchronizing audio and video portions of a media program signal is disclosed. The method comprises the steps of detecting an audio event in the audio portion of the media program signal, measuring the timing interval from the audio event to a subsequent video synchronization pulse in the video portion of the media program signal, and storing the timing interval in a third portion of the media program signal. The apparatus comprises a voice detector for detecting an audio event in the audio portion of the media program signal, a timer for measuring the timing interval from the audio event to a subsequent video synchronization pulse in the video portion of the media program signal, and a processor for storing the timing interval in a third portion of the media program signal.
    Type: Grant
    Filed: April 7, 2007
    Date of Patent: May 24, 2011
    Assignee: The DIRECTV Group, Inc.
    Inventor: Leon J. Stanger
  • Patent number: 7907216
    Abstract: A display apparatus including an image receiver receiving an image signal and a display displaying the image signal. The display apparatus includes a user selector, an image signal processor to process at least one image delay decrease mode to decrease a processing time of the image signal and a controller to control the image signal processor to process the image signal according to the selected image delay decrease mode if an image delay decrease mode is selected through the user selector.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: March 15, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-hun Choi
  • Patent number: 7809452
    Abstract: A system and method of delivering synchronized audio and audio/video signals in the form of analog signals and streamed data over networks such a hybrid power line communications network is described. Signal magnitude matching by monitoring directly feed audio outputs is also provided.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: October 5, 2010
    Assignees: Leviton Manufacturing Co., Inc., Arkados, Inc.
    Inventors: Oleg Logvinov, Michael Macaluso, Brion Ebert
  • Patent number: 7773152
    Abstract: Measurement of the relative timing between images and associated information, for example video and audio. Image mutual event characteristics are recognized in the images and associated mutual event characteristics are recognized in the associated information. The image mutual events and associated mutual events are compared to determine their occurrences, one relative to the other as a measure of relative timing. Particular operation with audio and video signals is described.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: August 10, 2010
    Assignee: Pixel Instruments Corporation
    Inventor: J. Carl Cooper
  • Patent number: 7688324
    Abstract: According to one embodiment, a graphics/video processor includes a memory controller. The memory controller includes a first arbiter that receives memory client requests to access a memory device, and a first memory buffer coupled to the first arbiter. The first arbiter stores client requests that are selected by the first arbiter. The memory controller also includes a second arbiter coupled to the first memory buffer and a second memory buffer coupled to the second arbiter. The second arbiter receives requests from the memory client requests stored in the first memory buffer. The second memory buffer stores the client requests selected by the second arbiter. Further, the memory controller includes a third arbiter coupled to the second memory buffer. The third arbiter provides access of the memory device to the client requests stored in the second memory buffer.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: March 30, 2010
    Assignee: Zoran Corporation
    Inventors: David R. Auld, Bruce K. Holmer, Hong-Jyeh Jason Huang, Gerard K. Yeh