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.
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.
October 6, 2014
Date of Patent:
August 16, 2016
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
Sang Hyun Mo, Ji-Hoon Bae, Chan-Won Park, Cheol Sig Pyo
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.
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.
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.
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.
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.
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.
September 17, 2012
Date of Patent:
March 25, 2014
Jiangyang Zhang, Anil Kokaram, Debargha Mukherjee, Andrew Joseph Crawford, Damien Kelly
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.
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).
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.
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.
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.
February 22, 2008
Date of Patent:
December 25, 2012
Sungkyunkwan University Foundation for Corporate Collaboration
Jae-Wook Jeon, Dong-Kyun Kim, Jung-Uk Cho, Seung-Hun Jin, Dae-Ro Lee, Jong-Hyun Park, Ki-Hoon Kim, Thien-Cong Pham
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.
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.
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.
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.
January 20, 2011
May 12, 2011
KONINKLIJKE PHILIPS ELECTRONICS N.V.
Eduard Willem Salomons, Albert Maria Arnold Rijckaert
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.