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Class 348/518 - Including compensation for transmission delays


Subclass of Class 348 - Television
Definition: Subject matter wherein the change in time or phase take
No. of patents: 117
Last issue date: 10/21/2008


1      
NumberTitleIssue Date
7440035Cable extending device
Attenuation compensation volume computing means (60, 61, 62, 63, 67, 68, 69, 70) of a signal receiver computes attenuation compensation volume of a video signal (GL, GH) on the basis of attenuation of pulses which are arranged in a digit...
10/21/2008
7423693Video delay stabilization system and method
A video delay stabilization system configured for multiple types of video input signals, includes a plurality of video processing modules, and a variable delay module. The plurality of video processing modules include at least one module that is selectively actuable...
09/09/2008
7365768Endoscope apparatus and function adjusting circuit for endoscope
An endoscope includes an insert section, a CCD is mounted at the end of the insert section, and a CCU for producing a video signal is arranged in a control unit connected to a proximal end of the insert unit. The CCU includes a general-purpose DSP board having the f...
04/29/2008
7348992Apparatus for and method of color compensation
An apparatus for color compensation includes a chroma deflection generation unit to calculate a chroma deflection based on an input chroma signal and a predetermined first reference value, a hue deflection generation unit to calculate a hue deflection based on an in...
03/25/2008
7333150Method, system, and program product for eliminating error contribution from production switchers with internal DVEs
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 i...
02/19/2008
7295248External synchronous signal generating circuit and phase difference measuring circuit
An external synchronous signal circuit comprises: means for measuring a phase difference between the external frame synchronous signal (FRM_SYNC) and the frame synchronous signal (FRM) of the digital video signal; means for generating a signal (EXT_H) having the sam...
11/13/2007
7212247Audio/video system providing variable delay
An audio/video system (100) is capable of introducing variable amounts of delay into a signal path so as to properly synchronize two signals, such a video signal and a corresponding audio signal. According to an exemplary embodiment, the audio/video system (
05/01/2007
7212248Method and apparatus for lipsync measurement and correction
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 ...
05/01/2007
7209178Optical transfer system having a transmitter and a receiver
An optical transfer system having a transmitter and a receiver converts an externally-applied video signal into an optical signal and restores the optical signal to the original video signal The system includes a video controller, a transmitter, a transmission photo...
04/24/2007
7205961Display apparatus having uniformity function of pixel luminescence frequency and display method
Means for inverting levels of R, G and B signals that are analog signals, and are primary color signals of video signals, in response to an instruction signal for inverting luminance, and means for displaying the above-described inverted video signals are included.
04/17/2007
7130316System for frame based audio synchronization and method thereof
A system and method is provided for synchronizing the presentation of audio data with video data. Audio transport packets are received through a demultiplexer from a multimedia transport stream. A transport stream synchronization manager is used to lock a system tim...
10/31/2006
RE39345Audio/Video/Computer graphics synchronous reproducing/synthesizing system and method
In an audio/video/computer graphics data synchronous reproducing/synthesizing system, a demultiplexer separates a bit stream in which an audio signal, a video signal, and computer graphics data are compressed and multiplexed, into compressed audio and video signal s...
10/17/2006
7123307Clock jitter limiting scheme in video transmission through multiple stages
A scheme to reduce clock jitter is disclosed in applications where video content is transmitted through multiple stages, each having a switch allowing that stage's video stream to be selected. The video data is re-clocked using a new clock at each stage. Before re-c...
10/17/2006
7096302Method and apparatus for accelerating detection of serial bus device speed signals
A method and apparatus for accelerating detection of speed code signals, and in particular S400 signals, for IEEE Standard 1394-1995 serial bus devices. The present invention validates S400 mode immediately after detecting an S400 speed signal, ...
08/22/2006
7091944Display controller
Systems and methods are disclosed for controlling a display device having a display scan line rate by storing incoming data in a buffer, the buffer having a usage level measure; comparing the usage level to the display scan line rate; and adjusting a width of a disp...
08/15/2006
7075950Program clock reference correction method in a multiplexed burst mode downlink transmission in an integrated multispot satellite communication system
Program Clock Reference correction method in a multiplexed burst mode downlink transmission in an integrated multispot satellite communication system (S) in a multimedia broadcasting network for setting up bi-directional communication with a satellite with return ch...
07/11/2006
7075584Buffer system for controlled and timely delivery of MPEG-2 data services
A data elementary buffer with underflow and overflow operational constraints is incorporated into a digital televison receiver to regulate the flow of data related to an ancillary data service to be presented in synchronization with a video or audio program element....
07/11/2006
7061547Image displaying system of environment-adaptive type, image processing method and program
An environment-compliant image display system, image processing method and information storage medium which can reproduce the same colors at different locations by absorbing any difference in the visual environment. In an individual environment, an image data is gen...
06/13/2006
7058965Multiplexing structures for delivery of interactive program guide
Multiplexing structures presented overcome problems and disadvantages in the delivery of an interactive program guide. An apparatus for forming a multiplexed transport stream to deliver an interactive program guide includes: an encoder and packetizer adapted (i) to ...
06/06/2006
7057622Graphics display system with line buffer control scheme
A graphics integrated circuit chip is used in a set-top box for controlling a television display. The graphics chip processes analog video input, digital video input, a graphics input and an audio input simultaneously. The chip includes a display engine that process...
06/06/2006
7046299Digital video synchronizer with both decoded digital and undecoded analog outputs
A digital video synchronizer for providing parallel and coordinated synchronization paths for decoded and undecoded video. Processing is added for a parallel path in a synchronization memory that bypasses the comb filter and video decoder circuitry to allow a digiti...
05/16/2006
7039070Moving image packet decoding and reproducing apparatus, reproduction time control method thereof, computer program product for controlling reproduction time and multimedia information receiving apparatus
Error correcting section holds PTS(n−1) and DTS(n−1) of the frame immediately preceding the current frame and the most recent CPTS as determined to be correct in the past. The time stamp of the current frame is determined to be incorrect if (1) CPTS>PTS(n) which...
05/02/2006
7023488Circuit and method for live switching of digital video programs containing embedded audio data
A circuit for detecting a transition in the content of a digital video stream containing embedded audio samples and providing a smooth transition from an old audio stream embedded before the transition to a new audio stream embedded after the transition. The circuit...
04/04/2006
7023471Video quality assessment with test video sequences
A test video sequence for testing quality loss in processed video. When video clips are transmitted, compressed/decompressed, or otherwise processed, measuring the loss of quality that occurs during processing can be improved by inserting specific types of overhead ...
04/04/2006
7020894Video and audio synchronization
In order to synchronise video and audio signals, a video test signal and an audio test signal are generated at the transmitting end of a transmission link, and transmitted over the link. The video test signal has first and second active picture periods of contrastin...
03/28/2006
6999131Video output apparatus and output video changeover control method
When a changeover instruction is input to video output changeover control section 108, power control section 112 turns on the power to changeover target video output section 102. Timing change section 111 synchronizes sync signal Y output...
02/14/2006
6975349Two-dimensional video timing display
A two-dimensional video timing display with numeric readouts allows a user to quickly, easily and precisely measure the timing difference between video signals. A graphic display area within a raster display region provides a two-dimensional display of vertical timi...
12/13/2005
6975363Methods and systems for independently controlling the presentation speed of digital video frames and digital audio samples
A digital receiver contains a local video clock that controls the video presentation speed and a local audio clock that controls the audio presentation speed separately and independently of the video presentation speed. To control the video presentation speed, a com...
12/13/2005
6975652Clock synchronization of HFC telephone equipment
A method and system for synchronizing two clocks of a first and second device. Successive synchronization messages are sent from the first device to the second device. Each synchronization message has a timestamp. Each message is received at the second device and th...
12/13/2005
6956622Method and apparatus for modulating video signals
A luminance component of a video signal is modulated in a first frequency band. A chrominance component of the video signal is modulated in a second frequency band. The modulated luminance component and the modulated chrominance component are then transmitted across...
10/18/2005
6947069Method and apparatus for connecting fiber optic lines to an information transmission line carrying two way signals
In a method and apparatus for connecting fiber optic lines and a fiber optic receiver and a fiber optic transmitter in an information transmission system carrying information signals propagated from a transmitter to a receiver in one direction and an external synchr...
09/20/2005
6947060Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method
An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance...
09/20/2005
6947447Image communication apparatus, image communication method and recording medium which stores the sound and image
An image communication apparatus includes a packet transmitting unit for transmitting image data or sound data in packets and a detecting unit for detecting the amount of sound data to be transmitted in packets. The apparatus also includes a control unit for switchi...
09/20/2005
6917387Arrangement for time-correct combination of two data streams
Methods and apparatus are described for time-correct combination of two data streams, particularly video data streams. In this case, a sync signal of the first video data stream is a horizontal sync signal. In this case, methods and apparatus are provided to combine...
07/12/2005
6912011Method and system for measuring audio and video synchronization error of audio/video encoder system and analyzing tool thereof
A method for measuring audio and video synchronization error of an audio/video encoder system is provided. The method includes steps of: producing a reference video data having a first time length and including a particular image pattern and a reference audio data h...
06/28/2005
6909468Positional difference correcting apparatus between two-route videos
Received videos through A and B routes are inputted in first and second variable devices and then delayed by a first and a second frame memory by one frame to be inputted in a comparator. Alternatively, these signals A and B are further delayed by one frame by third...
06/21/2005
6904111Asynchronous resampling for data transport
A data and clock signals from a source (12) are transmitted from a location (10) to a distant location (40) together with a phase signal which estimates the difference in phase between a data clock signal and a reference clock signal generated b...
06/07/2005
6900828Fade resistant digital transmission and reception system
In a digital broadcast communications system, a higher priority component and a lower priority component are broadcast from a transmitter to a receiver. Each of these components generates a main and a supplemental signal, and each supplemental signal is advanced in ...
05/31/2005
6894727Picture transmission apparatus, a picture transmission method and a recording medium, and a picture transmission program
Providing picture transmission apparatus, a picture transmission method and a recording medium, and a picture transmission program that can transmit the latest picture data in real time depending on the situation of the network bandwidth. The aforementioned picture ...
05/17/2005
6891573Method and apparatus for changing the output delay of audio or video data encoding
For TV broadcasting purposes encoding systems with related video encoders and audio encoders are used. The audio and video delay are aligned before multiplexing and transmitting the audio and video streams. According to a time stamping mechanism input time stamps ar...
05/10/2005
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