External Synchronization For Phase Or Frequency Correction Patents (Class 386/202)
  • Patent number: 10410616
    Abstract: A chord judging apparatus for judging chords of a musical piece, is provided with a processor and a memory for storing data of the musical piece, wherein the processor specifies plural segments in the data of the musical piece, estimates a tonality of each of the specified segments based on component tones included in the segment, and judges a chord of the plural segments of the musical piece based on modulation in tonality, when modulation is introduced in the estimated tonalities of the plural segments.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: September 10, 2019
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Junichi Minamitaka
  • Patent number: 9418259
    Abstract: Disclosed herein are a tag transmission apparatus and a signal transmitting method thereof. The tag transmission apparatus converts a plurality of data bits into a symbol, which is one of a plurality of symbols, and multiplies the converted symbol by a square-wave having a predetermined frequency to thereby generate a subcarrier signal. Here, in the case in which the plurality of data bits are n (n is a natural number larger than 2) bits, the number of the plurality of symbols is 2n.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: August 16, 2016
    Inventors: Sang Hyun Mo, Ji-Hoon Bae, Chan-Won Park, Cheol Sig Pyo
  • Patent number: 8948571
    Abstract: A receiver allows controlling a device to be controlled such as a display device based on reference timing acquired from reception data without delay and with low power consumption, and includes: a communication device receiving data incoming intermittently; a first control circuit analyzing the data received by the communication device to identify the presence of a predetermined reference timing signal pattern in the data; and a timer for counting a clock from an initial value, generating a control signal for the device to be controlled according to a resulting count value, and if the count value reaches a predetermined interval value, resuming counting the clock at the initial value. The timer changes the initial value to reduce a count of the clock between the initial value and the interval value if the first control circuit identifies the predetermined reference timing signal pattern to be present.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: February 3, 2015
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventor: Takeshi Ichikawa
  • Patent number: 8948575
    Abstract: A time code signal is transmitted. An audio input is provided. An audio signal is received through the audio input. A first time code signal is generated. A value of the first time code signal is displayed on a display. A data stream including the audio signal with the first time code signal superimposed on the audio signal is generated. The data stream is transmitted to a first external device. An interruptible feedback signal is transmitted to the first external device or a second external device. A talkback signal is transmitted between a second external device and a third external device. A second time code signal is received from a second external device and the first time code signal is synchronized with the second time code signal. An interface is provided for noting the value of the first time code signal.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: February 3, 2015
    Inventors: Reginald Webb, Laurie Webb
  • 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
  • Patent number: 8867887
    Abstract: An audio data capturing device captures packetized multimedia data transmitted through a transmission path from a stage unit, and converts the packetized multimedia data to original audio data. A storage section stores the data. An audio data delivery section packetizes audio data stored in the storage section and transmits it to the mixer through the transmission path. A path switching control section performs switching-control among the stage unit, the mixer, the audio data capturing section and the audio data delivery section.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: October 21, 2014
    Assignee: Roland Corporation
    Inventor: Yoshio Kamijo
  • 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: 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: 8677442
    Abstract: The invention relates to a method of sending commands to a VOD server, e.g. using RTSP, which is local to the client, said commands comprising a reference to the relative current position. The current relative position is maintained by the receiver on the basis of PTS received in the MPEG stream, without sending a request to the server or relying on the existence of a descriptor in the stream that can be used to deal with jumps in PTS included in the stream.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: March 18, 2014
    Assignee: Thomson Licensing
    Inventors: Jean-Claude Colmagro, Benoit Mercier, Thierry Quere
  • 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: 8390484
    Abstract: The present invention discloses a transmitted/received data decoding method and apparatus, which achieve effects of decoding performance improvement and synchronous detection. The decoding method includes setting a coded edge pattern, and filtering a received data by using the set coded edge pattern as a window; respectively computing absolute values of filtered values filtered by using the coded edge pattern windows; detecting a maximum absolute value from the computed absolute values; determining a sign (+/?) for the detected maximum absolute value; outputting an intermediate bit value of the corresponding original data as a resultant decoded value according to the determined sign and a window type (i.e. coded edge patter) with the selected maximum absolute value.
    Type: Grant
    Filed: July 9, 2011
    Date of Patent: March 5, 2013
    Assignee: FCI Inc.
    Inventor: Chang-ik Hwang
  • Patent number: 8351759
    Abstract: Embodiments of the disclosed invention include a system and method for recording television content in the event of a power loss. For example, in one embodiment, an optical network terminal associated with providing video service to the digital video recorder is utilized to backup and store a scheduled television program that occurs during the duration of a power outage affecting the digital video recorder.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: January 8, 2013
    Assignee: CenturyLink Intellectual Property LLC
    Inventors: Jamie Howarter, Doug Ceballos
  • Patent number: 8340446
    Abstract: Disclosed are a chain code generating apparatus and a method thereof. In accordance with an embodiment of the present invention, the chain code generating apparatus can include an image input unit, receiving an image signal from a camera and converting the received image signal to a digital image signal, and separating a synchronizing signal from the digital image signal and outputting the synchronizing signal; an image storing unit, storing image data corresponding to an active image section of the digital image signal in units of frame based on the synchronizing signal; and a code generating unit, reading the image data stored in the image storing unit and performing an outline search of the analysis portion, and generating a chain code according to a correlation between adjacent pixels forming an outline of the analysis portion in accordance with the searched result.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: December 25, 2012
    Assignee: Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Jae-Wook Jeon, Dong-Kyun Kim, Jung-Uk Cho, Seung-Hun Jin, Dae-Ro Lee, Jong-Hyun Park, Ki-Hoon Kim, Thien-Cong Pham
  • 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: 8098972
    Abstract: In a feedforward control type reproduced signal processor, a clock generator 1 changes a clock frequency, depending on a digital value set by a digital value generator 7. Therefore, power consumption of a system is optimized and control is facilitated. Moreover, when a frequency lock state is established in which a frequency ratio calculated by a frequency ratio calculator 3 satisfies a set condition, a modulation component having a small change is generated using a clock of a clock generator 1. Therefore, the digital value is updated with the modulation component, so that a change in clock frequency of the clock generator 1 gradually varies. As a result, the influence of the change in clock frequency on the response of a decoding process is reduced.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: January 17, 2012
    Assignee: Panasonic Corporation
    Inventors: Kouji Okamoto, Akira Yamamoto, Hiroki Mouri, Yoshinori Shirakawa
  • 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
  • Publication number: 20110110642
    Abstract: A storage device 500 includes an input 405 for receiving a digital video stream complying with a predetermined video encoding standard via a digital video communication system. The stream includes a sequence of digital video frames, a sequence of program clock reference stamps (PCR) and a sequence of video presentation time stamps (PTS). A time-base modifier 510 replaces the PTS's by respective modified video presentation time stamps (M-PTS) based on a constant predetermined frame time between successive presentation time stamps and replaces the PCR's by respective modified program clock reference stamps (M-PCR) by scaling the PCR's using a scaling factor that depends on a ratio of an expected time between a video presentation time stamp j and a preceding video presentation time stamp j-n and an actual time between the video presentation time stamp j and the preceding video presentation time stamp j-n, where j?n>0. The expected time is n times the predetermined frame time.
    Type: Application
    Filed: January 20, 2011
    Publication date: May 12, 2011
    Inventors: Eduard Willem Salomons, Albert Maria Arnold Rijckaert
  • Patent number: 7894705
    Abstract: A PLL controller for controlling the tracking rate of a phase-locked loop (PLL), in particular, controlling coefficients to be input to a device such as a multiplier of the phase-locked loop. A PLL controller receives a phase error between a horizontal sync signal in a video signal and a reference signal. Then an error amount detector measures the phase error using the N thresholds to output a control signal indicating any of N+1 levels. A coefficient selector outputs one of the N+1 gains as a coefficient signal, the one gain corresponding to the level indicated by the control signal, so that the tracking rate of the phase-locked loop is controlled in response to the input video signal, and thus a high-quality video image with less jitter can be provided.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: February 22, 2011
    Assignee: Oki Semiconductor Co., Ltd.
    Inventors: Yasunori Satoh, Takaaki Akiyama