Synchronization Correction Patents (Class 386/207)
  • Patent number: 10250927
    Abstract: A method for synchronizing playback of a program including a video and associated first audio at a first electronic device with playback of a second audio associated with the program at a second electronic device that also receives the first audio, the method comprising: decoding, by a first audio decoder in the second electronic device, the first audio, and outputting the decoded first audio; decoding, by a second audio decoder in the second electronic device, the second audio and outputting the decoded second audio for playing back by the second electronic device; receiving a user command to synchronize the playback of the video at the first electronic device and playback of the second audio at the second electronic device; responsive to the user command, the method further comprising capturing, by a capturing device in the second electronic device, the playback of the first audio at the first electronic device; determining, by the second electronic device, an offset between the outputted decoded first audi
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: April 2, 2019
    Assignee: Interdigital CE Patent Holdings
    Inventor: John Sidney Stewart
  • Patent number: 9847846
    Abstract: The audio outputs 29 of each of a plurality of telecommunications terminals in a packet switched system are synchronized by having each terminal transmit a stream of packets whose rate, and therefore duration is determined according to a clock generator 25, and is thus indicative of the rate at which the terminal is generating its audio output. The signals from each terminal are transmitted to a common server. For each terminal, the server uses a master dock to compare the duration of the packet stream with an expected duration, and calculates an offset value which is returned to the respective terminal. Each terminal stores the offset value it receives (20) and uses it to adjust the output of its clock generator 25 so that its operations can be synchronized to the server. This allows all the terminals' digital-to-analog conversion processes to be synchronized such that all their analog outputs are coordinated, allowing co-located acoustic outputs to be synchronous.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: December 19, 2017
    Assignee: BRITISH TELECOMMUNICATIONS public limited company
    Inventors: John Gibbons, Robert Ming Lee, Graeme Peter Wilson, Finlay James Fraser, Sanjay Rugnath Vadgama
  • Patent number: 9829342
    Abstract: A synchronization method for at least two sensors, which enables synchronized collection of a sensor value of a slave sensor in relation to a predetermined intended value of a master sensor. Time-dependent measured values of the master sensor are used to determine open parameters of a prediction model, on the basis of which a time associated with a master sensor intended value to be predetermined is extrapolated. When this time is reached, a synchronization signal triggering the recording of a slave sensor value, in particular the recording of a measured value, is transmitted to the at least one slave sensor. Master sensor intended value and slave sensor value are provided as connected value tuple. As a result of continuous collection of measured values by the master sensor, it is possible to form updated extrapolation rules continuously. Predetermined intended values of the master sensor can have, in particular, an equidistant spacing.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: November 28, 2017
    Assignee: HEXAGON TECHNOLOGY CENTER GMBH
    Inventor: Robert Fritsch
  • Patent number: 9800908
    Abstract: In an embodiment, synchronization of data processing by a first and second receiver is enabled by the first receiver processing data units of a first broadcast stream, with a play-out delay ?tp defining a time interval between transmission of a data unit to the first receiver and the processing of the data unit by the first receiver. Transmission of data units of a second broadcast stream is initiated to the second receiver, a common timeline correlating one or more data unit in the first stream with one or more corresponding data unit in the second stream. One or more data units is selected from stored data units corresponding to the second stream. At least part of the selected data units have corresponding data units of the first stream that have been transmitted to the first receiver but that have not been processed by the first receiver due to the play-out delay.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: October 24, 2017
    Assignees: KONINKLIJKE KPN N.V., NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO
    Inventors: Menno Bangma, Ray Van Brandenburg
  • Patent number: 9615123
    Abstract: A video playing device, a method of controlling the video playing device, and a video playing system are provided. The video playing device includes a display configured to display a video and a caption, and a controller configured to set a synchronization period in which the video is repeatedly played, and to synchronize a time point of displaying the caption with the video during the synchronization period.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: April 4, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yong Jun Choe
  • Patent number: 9609395
    Abstract: Systems for, and methods of, displaying video information comprising: a second screen device obtaining current play position data of a video being played on a primary screen device (e.g., obtaining from the primary screen device an identification of a current play position of the video, or obtaining information to generate an acoustic fingerprint of the video); determining a current play position of the video playing on the primary screen device based upon the current play position data (e.g., identification of the current play position or the acoustic fingerprint); downloading information (e.g., video map, subtitles, moral principles, objectionable content, memorable content, performers, geographical maps, shopping, plot point, item, ratings, and trivia information) over a computer communications network into the memory of the second screen device; and displaying information on the second screen device synchronized with the contemporaneously played video on the primary screen device.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: March 28, 2017
    Inventors: Max Abecassis, Ryan M. Donahue
  • Patent number: 9509940
    Abstract: According to one embodiment, an image output device includes a buffer into which video information input in stream data is written per block, a determination unit configured to determine whether the buffer is in an overflow state due to slow reproduction, and a buffering control unit configured to switch a buffering pattern of the video information based on a determination result of the determination unit.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: November 29, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hajime Matsui, Youhei Fukazawa, Shuou Nomura, Shunichi Ishiwata, Takaya Ogawa, Atsushi Mochizuki, Kazuyo Kanou, Akira Moriya, Yoshiro Tsuboi
  • Patent number: 9167296
    Abstract: This disclosure describes techniques to improve a user experience in a Wireless Display (WD) system. The WD system includes a source device that provides media data to one or more sink devices. The techniques are directed toward reducing end-to-end latency in the WD system while improving video playback quality at the sink devices. More specifically, the techniques include customized playback at the sink devices based on the type of media data received from the source device. If the media data only includes video data and does not include audio data, a processing pipeline of the sink device is configured to render the video data without waiting to synchronize with non-existent audio data. If the media data includes both video data and audio data, an audio rendering start-up timer is reduced and the processing pipeline renders synchronized audio and video data according to the reduced start-up timer.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: October 20, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaodong Wang, Fawad Shaukat, Vijayalakshmi R. Raveendran
  • Patent number: 9025928
    Abstract: In a portable terminal apparatus, a CPU determines receiving condition of broadcast data received by a television broadcast receiving unit, while recording the received data, and records information indicating receiving condition according to the determination result. The CPU obtains information indicating recording condition of the recorded broadcast data based on information indicating receiving condition, and displays the obtained information on a main display unit. Specifically, the CPU sequentially receives time stamps synchronous with broadcast data while receiving and recording the broadcast data, and records them in time series as information indicating receiving condition. The CPU determines whether time stamps recorded in time series are temporally continuous, and specifies any error portion where the recorded broadcast data has not been received normally, according to the determination result.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: May 5, 2015
    Assignee: Lenovo Innovations Limited (Hong Kong)
    Inventor: Akira Watanabe
  • Patent number: 9021536
    Abstract: A system and process is provided in which original video or dialog content is securely received from the content owner. Subtitle language data is derived, translated, stored and served on a separate database for synchronous playback with the content in video streaming, downloading or online TV following the activation of an option by the end user through a media player.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: April 28, 2015
    Assignee: Stream Translations, Ltd.
    Inventors: Richard E. Greenberg, Bente Cecilie Ottersen, Randi Næs
  • Patent number: 9014532
    Abstract: A transmitter (14) of audio, video, or other real-time information reads the information from a persistent store (22) in which the real-time information has been stored in the Real-time-Transport Protocol (“RTP”) format (FIG. 4). A receiver (18) receives the information from the channel (16) through which the transmitter (14) has transmitted it, and the receiver may store the information in a persistent store (24) in RTP format instead of or in addition to playing it by applying it to an appropriate player (20). Parts of this communications circuit may be tested by a tester unit (26) that also employs RTP-format information from a persistent store (22).
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: April 21, 2015
    Assignee: Cisco Technology, Inc.
    Inventor: Michael A. Falco
  • Patent number: 9002171
    Abstract: According to one embodiment, there is provided a control block including a read control processor for reading designated content, a time information processor for processing time information. A controller returns, to a user terminal, a response signal, and information indicating a second absolute time point when an operation is executed in response to a request signal generated by the user terminal at a first absolute time point. The controller stores time difference information indicating a time difference between the first and the second absolute time points. When responding to a further request signal sent from the requester via the network, the controller sets, as tag time information, time information obtained by correcting, using the time difference information, a current relative time period for which the designated content is read.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: April 7, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hideo Kataoka, Hajime Aoyama
  • Publication number: 20150043885
    Abstract: According to an embodiment, an information processor includes a first decoder, a controller and a display unit. The first decoder decodes the first video encoded data at a first speed to generate a first video. When the first video encoded data is received earlier than the second video encoded data, the controller controls the first speed so as to generate a period in which the first speed becomes lower than a ×1 speed until second time information of the second decoder catches up with first time information of the first decoder. When the first video encoded data is received earlier than the second video encoded data, the first video is displayed at the first speed until the second time information catches up with the first time information.
    Type: Application
    Filed: September 12, 2014
    Publication date: February 12, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Tomoo YAMAKAGE
  • Patent number: 8934756
    Abstract: An image processing apparatus includes a detecting unit configured to detect a change in a viewing environment; a storing unit configured to store position information of data displayed on a display unit when the change in the viewing environment is detected by the detecting unit; and a reproducing unit configured to reproduce data corresponding to the position information stored in the storing unit by receiving a re-viewing instruction.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: January 13, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Kuroki
  • Patent number: 8934753
    Abstract: An exemplary method for synchronizing audio playback of a plurality of digital media renders. The digital media renders include a digital audio/video (AV) media render and at least one digital audio media render. The method includes: detecting a relative time position difference between the digital AV media render and the at least one digital audio media render; and controlling audio playback of the digital audio media render to synchronize to audio playback of the digital AV media render according to the relative time position difference.
    Type: Grant
    Filed: November 4, 2012
    Date of Patent: January 13, 2015
    Assignee: Primax Electronics Ltd.
    Inventor: Ting-Yuan Cheng
  • Publication number: 20150003799
    Abstract: This invention relates to a device and a method of generating a first and a second fingerprint (102,104) usable for synchronisation of at least two signals (101,103) and corresponding method and device for synchronising two or more signals. A fingerprint pair is generated on the basis of a segment of a first signal e.g. an audio signal and of a segment of a second signal e.g. a video signal at each synchronisation time point. The generated fingerprint pair(s) are stored in a database (203) and communicated or distributed to a synchronisation device (303). During synchronisation, fingerprint(s) of the audio signal and fingerprint(s) of the video signal to be synchronised are generated and matched against fingerprints in the database. When a match is found, the fingerprints also determine the synchronisation time point, which is used to synchronise the two signals. In this way, a simple, reliable and efficient way of synchronising at least two signals is obtained.
    Type: Application
    Filed: July 16, 2014
    Publication date: January 1, 2015
    Inventors: Job Cornelis Oostveen, David K. Roberts, Adrianus Johannes Maria Denissen, Warner Rudolph Theophile Ten Kate
  • Patent number: 8861925
    Abstract: Audio-visual synchronization using retrieval of visual data through a network to enhance the content presented to the user and to provide the user with a more meaningful and engaging audio-visual experience. An audio player such as an electronic book reader or stereo plays an audio file. The audio file, whether in analog form as played through a speaker or in digital form, is provided to a controller, which scans the audio file to detect a trigger or cue identifying visual data stored in a data store or database that is local or accessible through a network. The controller accesses the data store or database, downloads the pre-determined visual data, and controls the audio player and display such that playing of audio data and display of the retrieved visual data are synchronized with each other.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: October 14, 2014
    Assignee: Intuit Inc.
    Inventor: Phillip J. Ohme
  • Patent number: 8839086
    Abstract: A verbal description method and system. A computing system broadcasts first audio data and video data associated with the first audio data. The computing system determines that the video data comprises a graphic without a description in the first audio data. The computing system receives audible description data associated with the graphic. The computing system generates second audio data comprising the first audio data and the audible description data. The computing system synchronizes portions of the second audio data with associated portions of the video data. The computing system generates synchronized audio/video data comprising the portions of said second audio data aligned with the associated portions of said video data. The computing system broadcasts the synchronized audio/video data.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: September 16, 2014
    Assignee: International Business Machines Corporation
    Inventors: Sara H. Basson, Brian Reginald Heasman, Dimitri Kanevsky, Edward Emile Kelley, Bhuvana Ramabhadran
  • Patent number: 8837898
    Abstract: A method and apparatus for video playback includes coordinating a display of a video playback on a first device so as to be synchronized to a display of the video at a second device in response to the first device departing a control territory associated with the second device.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: September 16, 2014
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Ryan S. Davidson, Calvin H. Watson
  • Patent number: 8774602
    Abstract: A method and system for recording a media file, include a recorder and a player. The recorder receives in real time a first content of the media file; stores the first content in a recorded media file; and determines that the recorded media file includes a hole. The player plays in real time the recorded media file including the hole. The recorder then receives a second file data packet which includes a second content of the media file to fill the hole, and stores the second content in the recorded media file. The recorded media file can be replayed with the filled hole. During the replay, more content of the media file is played than during the first play.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: July 8, 2014
    Assignee: TP Lab, Inc.
    Inventors: Chi Fai Ho, Shin Cheung Simon Chiu
  • Patent number: 8761568
    Abstract: The invention relates to a method and apparatus for synchronizing subtitles with a video, the method comprising, upon receipt of a user input indicative of a synchronization error between the video and the subtitles displayed on the display, modifying the relative timing of the subtitle and video displays in accordance with the user input during playback of the video on a video display.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: June 24, 2014
    Assignee: Vestel Elektronik Sanayi Ve Ticaret A.S.
    Inventor: Tanil Ergin
  • Patent number: 8699844
    Abstract: A content distribution apparatus includes a receiving section, a correction section, an evaluation section and a summary generation section. The receiving section receives plural pieces of watching information of target content information and stores the received watching information. Each of the watching information includes information indicating a reproduction start position from which it was started to reproduce the target content information. The correction section corrects each of the reproduction start positions to any of a plurality of predetermined positions. The evaluation section generates evaluation information of each corrected reproduction start position based on the corrected reproduction start position and the stored watching information. The summary generation section extracts a part of the target content information based on the generated evaluation information of the respective corrected reproduction start positions to generate summary information of the target content information.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: April 15, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Atsushi Maekawa
  • Patent number: 8682144
    Abstract: Provided are methods for synchronizing multiple video recordings of the same event using audio signals of the recordings. An algorithm is designed to generate candidate time offsets for pairwise matches of video recordings based on audio signals corresponding to the recordings, and combine the candidate time offsets to obtain the most accurate actual time offset between each pair of recordings. Each candidate time offset for each pairwise match of recordings is assigned a confidence measure indicating how likely it is that the particular time offset is correct for the given pair of recordings. The confidence measure assigned to a particular time offset is based on various components and characteristics of the audio signal pair corresponding to the video recordings.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: March 25, 2014
    Assignee: Google Inc.
    Inventors: Jiangyang Zhang, Anil Kokaram, Debargha Mukherjee, Andrew Joseph Crawford, Damien Kelly
  • Patent number: 8683535
    Abstract: A system and method that provide reduced latency in a video signal processing system. Various aspects of the present invention may comprise generating and receiving a request for a unit of video information. A video transmission system may, for example, receive the request for the unit of video information and communicate the unit of video information to a video receiver. For example, the video transmission system may transmit a first portion of the unit of video information at a rate that is faster than a typical steady-state transmission rate for the unit of video information, and the video transmission system may transmit a second portion of the unit of video information at the typical steady-state transmission rate for the unit of video information. A video receiver may then receive the first and second portions of the unit of video information at respective reception rates.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: March 25, 2014
    Assignee: Broadcom Corporation
    Inventor: Alexander G. MacInnis
  • Publication number: 20140079368
    Abstract: A display device comprising: a reception unit; a display unit; a storage unit; and an acquisition unit. The reception unit receives a stream containing a plurality of video frames and first display timing information specifying a display timing of each video frame. The display unit displays each video frame at a corresponding display timing specified by the first display timing information. The storage unit stores an image and second display timing information specifying a display timing of the image. The acquisition unit acquires correction information specifying a correction amount for correcting the display timing of the image and thereby enabling the image to be displayed in synchronization with the video frames displayed by the display unit. The display unit further displays the image at a corrected display timing determined by correcting the display timing of the image by using the correction amount specified by the correction information.
    Type: Application
    Filed: March 8, 2013
    Publication date: March 20, 2014
    Applicant: Panasonic Corporation
    Inventors: Taiji Sasaki, Toshihiko Munetsugu, Yoshimi Nishii, Yuka Ozawa, Takuji Hiramoto, Yoshihiro Ujiie, Tomoki Ogawa
  • Patent number: 8655156
    Abstract: In one method embodiment, providing a multiplex of compressed versions of a first video stream and a first audio stream, each corresponding to an audiovisual (A/V) program, the first video stream and the first audio stream each corresponding to a first playout rate and un-synchronized with each other for an initial playout portion; and providing a compressed version of a second audio stream, the second audio stream corresponding to a pitch-preserving, second playout rate different than the first playout rate, the second audio stream synchronized to the initial playout portion of the first video stream when the first video stream is played out at the second playout rate, the first audio stream replaceable by the second audio stream for the initial playout portion.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: February 18, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Ali C. Begen, Tankut Akgul, Michael A. Ramalho, David R. Oran, William C. Ver Steeg
  • Patent number: 8639084
    Abstract: The present invention relates to method and apparatus of providing supplementary service information for A/V contents written in a recording medium. This method has a recording medium containing Presentation Language data, which have to be included like as in a digital television signal for supplementary service information in accordance with Advanced TV Enhancement Forum or Digital TV Application Software Environment standard, and reproduces, if a disk reproduction is requested, the Presentation Language data as well as requested A/V data and provides them for a connected external device such as a digital television. As a result, various video information and functions provided with Presentation Language data by a recording medium can be realized at a digital television set being able to accept Presentation Language data.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: January 28, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kang Soo Seo, Jea Yong Yoo, Byung Jin Kim, Hyung Sun Kim
  • Patent number: 8640170
    Abstract: The present invention provides a tuning scheme for coordinating schedule information and programs received from multiple sources (26, 28, 30 and 34). In the preferred embodiment, an identifier associated with the program's channel (52) is used to identify a source device (26, 28, 30 or 34). When a user selects a program (60 or 62) listed in displayed schedule information (50), the system (10) reads the source identifier attached to the program's channel (52). The system (10) then carries out an automatic switching/tuning such that the required source device (26, 28, 30 or 34) is input to the destination device (22), and a tuner is then tuned to the selected program's channel (52).
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: January 28, 2014
    Assignee: Starsight Telecast, Incorporated
    Inventor: Brian Lee Klosterman
  • Patent number: 8630527
    Abstract: The present invention is directed to an image editing apparatus that automatically selects an appropriate frame rate that improves image quality of a new moving image generated by combining a plurality of moving images having different frame rates to prevent a user from working much on the selection, when the user newly creates a moving image. The image editing apparatus of the present invention classifies a plurality of moving images to be combined into groups based on a frame rate, compares an amount of moving images included in each of the groups, and selects the group having the largest amount of moving images belonging thereto. Further, the image editing apparatus compares the amounts of the moving images for respective frame rates included in the selected group to select the frame rate which the largest amount of the moving images has. The image editing apparatus converts moving image to be combined into the selected frame rate and then combines the plurality of converted moving images.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: January 14, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takuma Mikawa
  • Publication number: 20140010515
    Abstract: Various exemplary embodiments relate to method and media devices for synchronizing media playback between a receiving media device and sending media device, including: receiving, at the receiving media device, a plurality of messages from the sending media device, wherein the plurality of messages include a plurality of sender timestamps; generating a plurality of clock offset values based on the plurality of sender timestamps and a clock of the receiving media device; identifying a minimum clock offset value from the plurality of clock offset values; locating first media data for playback and a first presentation time associated with the first media data; and causing the first media data to be rendered at a first time that matches the first presentation time based on the minimum clock offset.
    Type: Application
    Filed: September 12, 2013
    Publication date: January 9, 2014
    Applicant: DTS, INC.
    Inventors: ChunHo Lee, Dannie Lau
  • Patent number: 8615154
    Abstract: A video-audio processing method includes acquiring encoded audio data, decoding the acquired encoded audio data and thereby creating audio data; causing an audio output unit to output the created audio data, capturing a video image of an object in synchronization with an output of the audio data by the audio output unit and thereby creating first video data, encoding the created first video data and thereby creating first encoded video data, holding the first encoded video data, and multiplexing the encoded audio data and the first encoded video data and thereby creating a first stream.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: December 24, 2013
    Assignee: JVC KENWOOD Corporation
    Inventor: Yoshiko Hozumi
  • Patent number: 8606072
    Abstract: A recording playback apparatus includes a video-signal converter performing certain signal processing to a video signal that is externally received and outputting the resulting video signal; a recorder player storing and playing back the video signal; and a controller switching between a normal mode and an edit mode on the basis of control by an editing apparatus controlling the recording playback apparatus. In the normal mode, a video signal played back by the recorder player is supplied to a display where the video signal is displayed as an image. In the edit mode, switching between a first video signal supplied from the video-signal converter and a second video signal resulting from addition of a delay corresponding to a time necessary for the signal processing in the video-signal converter to a video signal played back by the recorder player is performed to display the resulting video signal in the display.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: December 10, 2013
    Assignee: Sony Corporation
    Inventor: Kazuo Ido
  • Patent number: 8472781
    Abstract: A playback method that plays video data and audio data associated with the video data, includes the steps of: calculating, in the video data, a difference between a playback interval and an interval of the audio data; performing first conversion that converts the length of the playback interval in accordance with the difference; and performing second conversion that alternately outputs each frame repeatedly three times and repeatedly two times on the video data and converts the video data at a first frame frequency to the video data at a second frame frequency in a two-to-five relationship with the first frame frequency, wherein the first conversion is configured such that the frame difference after the conversion can be equal to or lower than one between the frame group based on the frame output repeatedly three times and the frame group based on the frame output repeatedly two times.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: June 25, 2013
    Assignee: Sony Corporation
    Inventor: Masayoshi Mizuno
  • Patent number: 8428426
    Abstract: A digital video recording/playback apparatus is provided in which maximum delay can be easily changed in accordance with the bit rate of inputted video data. The digital video recording/playback apparatus includes a memory unit, a playback unit, a synchronization unit, a synchronization signal counter, and a controller. The synchronization signal counter counts a synchronization signal to generate a frame counter value. The controller outputs a reading start instruction for the video data to the memory unit, and a decoding start instruction for the video data to the playback unit. The controller is configured to determine a first process completion time limit represented by the frame counter value as a process completion time limit for the memory unit and to determine a second process completion time limit represented by the frame counter value as a process completion time limit for the playback unit.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: April 23, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Akihiko Nakao
  • Patent number: 8364004
    Abstract: A transport signal transmitted from a television receiver apparatus 720 through a signal line 708 is subjected to a separation operation by a transport-signal processor 713 and decoded by a video-signal decoding unit 714 and an audio-signal decoding unit 715. A decoded video signal is supplied through a signal line 701 to the television receiver apparatus 720. Video processing time of the television receiver apparatus 720 is obtained by a delay-information obtaining unit 716 through a signal line 703. An audio-signal delaying unit 717 delays an audio signal decoded by the audio-signal decoding unit 715 in accordance with the video processing time obtained by the delay-information obtaining unit 716 and outputs the audio signal to a speaker 750.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: January 29, 2013
    Assignee: Sony Corporation
    Inventors: Gen Ichimura, Yasuhisa Nakajima
  • Patent number: 8346057
    Abstract: According to one embodiment, there is provided a control block including a read control processor for reading designated content, a time information processor for processing time information. A controller returns, to a user terminal, a response signal, and information indicating a second absolute time point when an operation is executed in response to a request signal generated by the user terminal at a first absolute time point. The controller stores time difference information indicating a time difference between the first and the second absolute time points. When responding to a further request signal sent from the requester via the network, the controller sets, as tag time information, time information obtained by correcting, using the time difference information, a current relative time period for which the designated content is read.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: January 1, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hideo Kataoka, Hajime Aoyama
  • Patent number: 8340492
    Abstract: A method for sharing at least one annotation between a first user media terminal (102) and a second user media terminal (104) in a communication network (100) is provided. The method includes inputting (404) the at least one annotation on the first user media terminal. Further, the method includes anchoring (406) the at least one annotation to the media stream executed on the first user media terminal at a first start time. The at least one annotation is sent (408) to the second user media terminal. The at least one annotation is received (410) at the second user media terminal. Furthermore, the at least one annotation is synchronized (412) at the second user media terminal based on a relative start time. The at least one synchronized annotation is then rendered (414) to the media stream on the second user media terminal.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: December 25, 2012
    Assignee: General Instrument Corporation
    Inventors: Venu Vasudevan, Michael Pearce
  • Patent number: 8301007
    Abstract: A video and audio processing system includes an output apparatus that outputs video data and audio data to be synchronized and reproduced; an audio processing apparatus that receives the video data and the audio data from the output apparatus, supplies at least the video data to a downstream apparatus, and processes the audio data to generate an audio signal to be supplied to a speaker; and a video processing apparatus that receives the video data output from the audio processing apparatus and generates a video signal used for displaying video. The video processing apparatus includes video signal processing means, control means, and determining means for determining a processing time. The video and audio processing system delays the audio signal to be supplied to the speaker so as to be synchronized with the displayed video on the basis of the determination result of the processing time.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: October 30, 2012
    Assignee: Sony Corporation
    Inventor: Gen Ichimura
  • Patent number: 8290353
    Abstract: A data processor includes: a receiving section for receiving a data stream including first data on a compressed and encoded video content, first time information setting the presentation time of the first data, second data on a different type of content from the video content, and second time information setting the presentation time of the second data; a separating section for extracting the first data, first time information, second data and second time information from the data stream; a first decoding section for decoding the first data and outputting it in accordance with the first time information; and a second decoding section for outputting the second data in accordance with the second time information.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: October 16, 2012
    Assignee: Panasonic Corporation
    Inventors: Kazuo Fujimoto, Shinji Kojima
  • Patent number: 8285106
    Abstract: Audio data is prevented from not synchronizing with video data when splicing. A first GOP of a video stream of a second program is spliced to a last GOP of a video stream of a first program. A first GOP of an audio stream of the second program is spliced to a last GOP of an audio stream of the first program. In this case, a gap amount PTS_FS required for synchronizing video data and audio data after the splicing is computed for each GOP. For the splicing processing, a gap amount PTS_FS_SPLYCE caused when the last GOP is spliced to the first GOP directly and the PTS_FS are used.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: October 9, 2012
    Assignee: Sony Corporation
    Inventor: Yoko Komori
  • Patent number: 8279224
    Abstract: An object of the invention is to improve convenience in using a system capable of recording electronic data in association with time information. To achieve this object, an information processing apparatus of this invention includes a display control device which displays, on a display device together with a time line, time information which is obtained from a timer and associated with electronic data recorded by a recording control device, and a processing device which determines on the basis of the time information associated with the electronic data whether a count of the timer was corrected, wherein if it is determined that the count of the timer was corrected, the display control device displays, on the display device together with the time line, information representing correction contents of the time information.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: October 2, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tetsuhiro Takanezawa
  • Patent number: 8233549
    Abstract: A video receiving apparatus includes a receiving unit, a detecting unit, a determining unit, and a control unit. The receiving unit receives a video stream transmitted from a video distribution apparatus and to be reproduced by a video reproducing unit. The detecting unit detects an error occurrence position on the video stream in response to an error occurring during receiving of the video stream. The determining unit determines a reproduction start time based on the error occurrence position detected by the detecting unit and a position of a predetermined synchronization code in the video stream so that reproduction of the video stream is started before the error occurrence position. The control unit transmits a reproduction request including the determined reproduction start time to the video distribution apparatus.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: July 31, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takeshi Toyama
  • Patent number: 8233765
    Abstract: A computing system that has access to a streamed multimedia sample that is stored on a storage medium applies a zero-based presentation timestamp numbering scheme to the data packets of the multimedia sample, on-the-fly, and after each seek operation. After seeking to a desired starting point, the computing system reads ahead a maximum number of data packets within each media stream of the multimedia sample. A smallest timestamp (normalizing presentation timestamp) is identified and then subtracted from the timestamps of the data packets that are transmitted to the appropriate rendering devices, thereby creating appropriate presentation timestamps for the data packets for synchronizing the playback of the multimedia sample.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: July 31, 2012
    Assignee: Microsoft Corporation
    Inventors: Matthijs A. Gates, Jai Srinivasan
  • Patent number: 8116608
    Abstract: According to one of embodiments, a method and apparatus for reproducing video and audio changes a playback speed for video and a playback speed for audio independently of each other. To provide an apparatus and method for controlling the playback speeds shortly before a period in which the video and audio should better be played back at a normal-speed, thereby to reduce the strange feeling the user may have as the playback changes from the high-speed playback to the normal-speed playback, a video signal and an audio signal are first isolated from a content and then demodulated. A playback speed is set for the video signal modulated, and a playback speed is set for the audio signal modulated. The video signal and the audio signal, each set to a playback speed, are output.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: February 14, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Michio Yamashita, Koichi Nakazato, Takashi Mori
  • Patent number: 8036512
    Abstract: A color difference processor recognizes the value of a color difference signal U and the value of a color difference signal V for each pixel from a color difference signal U/V, and respectively assigns the value of a luminance signal Y and the recognized values of the color difference signals U and V to the pixel. A reversing processor reverses, when the value of the color difference signal U and the value of the color difference signal V that are recognized by the color difference processor should be inherently recognized, respectively, as the value of the color difference signal V and the value of the color difference signal U, the recognition of the values of the color difference signals U and V that have been assigned to each pixel by the color difference processor. A conversion processor converts the value of the luminance signal Y for each pixel and the values of the color difference signals U and V for the pixel finally recognized, respectively, into the values of primary color signals R, G, and B.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: October 11, 2011
    Assignee: Panasonic Corporation
    Inventor: Masato Kojima
  • Patent number: 8027560
    Abstract: A system and method for providing a digital In-Flight Entertainment (IFE) system in a vehicle, such as an aircraft, that is capable of presenting a video program and associated audio in a synchronized manner to a large number of individual video monitors and speakers. The system and method employ processing operations in at least one decoder of the IFE system, to perform operations such as adjusting a local clock based on a master clock, setting a delay time in relation to a master clock, and adjusting video and audio playback based on the delay, to substantially synchronize playback of the audio and video data by the audio and video players, to thus eliminate or at least minimize the negative effects of source and load based jitter, network delays, clock drifts, network errors and decoder buffering differences, on synchronizing video and audio playback.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: September 27, 2011
    Assignee: Thales Avionics, Inc.
    Inventors: Kenneth A. Brady, Jr., Lyle K. Norton, George Treneer
  • Publication number: 20110217025
    Abstract: In one method embodiment, providing a multiplex of compressed versions of a first video stream and a first audio stream, each corresponding to an audiovisual (A/V) program, the first video stream and the first audio stream each corresponding to a first playout rate and un-synchronized with each other for an initial playout portion; and providing a compressed version of a second audio stream, the second audio stream corresponding to a pitch-preserving, second playout rate different than the first playout rate, the second audio stream synchronized to the initial playout portion of the first video stream when the first video stream is played out at the second playout rate, the first audio stream replaceable by the second audio stream for the initial playout portion.
    Type: Application
    Filed: March 2, 2010
    Publication date: September 8, 2011
    Applicant: Cisco Technology, Inc.
    Inventors: Ali C. Begen, Tankut Akgul, Michael A. Ramalho, David R. Oran, William C. Ver Steeg
  • Publication number: 20110206343
    Abstract: An integrated circuit or system receives a bit pattern from a metadata, IPG, and or EPG signal. This bit pattern is then coupled to a circuit to provide a content control command to a recorder or to a processing circuit to generate a content control signal. In particular the bit pattern may be utilized in a manner to program, enable, or disable the generated control signal. Furthermore this content control signal provides resistance to a circumvention device. For example, the circumvention device is unable to remove sufficiently the content control signal, and content control is maintained.
    Type: Application
    Filed: February 24, 2010
    Publication date: August 25, 2011
    Inventor: Ronald Quan
  • Patent number: 8005338
    Abstract: The following configuration is preferable for providing a digital broadcast-enabled recording and reproducing device involving no lip-sync error and offering good usability. For example, the recording and reproducing device includes a receiver that receives digital broadcast data, a video/audio signal generator that generates a video signal and an audio signal included in the digital broadcast data received by the receiver, an image processing unit that executes image processing of the video signal input from the video/audio signal generator; and a delay unit that receives the audio signal generated by the video/audio signal generator to adjust time lag between the received audio signal and the video signal processed by the image processing unit.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: August 23, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Kazuto Shimagami, Atsuhiro Ono
  • Patent number: 7983525
    Abstract: A recording apparatus includes a synchronization-signal generator configured to generate a predetermined synchronization signal on the basis of a reference synchronization signal; a resolution converter configured to convert a second signal into a third signal when a received signal is the second signal, the second signal being different from a first signal having a first resolution and the second signal having a second resolution lower than the first resolution, and the third signal having the first resolution; a delayer configured to delay the first signal received when the received signal is the first signal, by a predetermined time taken to convert the second signal into the third signal; and a recorder configured to record the first signal delayed by the delayer or the third signal obtained by converting the second signal by the resolution converter, on a recording medium on the basis of the synchronization signal.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: July 19, 2011
    Assignee: Sony Corporation
    Inventor: Yoshio Nakamura