Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7405769 | Method and system for 3D comb synchronization and alignment of standard and non-standard video signals In a method and system for 3D comb synchronization and alignment of standard and non-standard video signals, a coarse synchronization is performed on a bottom frame, a current frame, and a top frame based on a bottom frame field count. The current frame is assigned ... | 07/29/2008 |
| 7372929 | Closed loop sub-carrier synchronization system A system and method for synchronizing sub-carriers in a signal processing system. Various aspects of the present invention may comprise method steps and structure that receive a sampled signal. Various aspects may produce a synchronization signal based on the sample... | 05/13/2008 |
| 7355653 | Video signal processing circuit and video signal processing method When an A/D-converted composite video signal is directly outputted while a system clock frequency is switched so as to execute the determination of a signal system, a digital chroma demodulation system prevents the images displayed by the composite video signals fro... | 04/08/2008 |
| 7330217 | Chroma phase error correction circuitry and methods and systems utilizing the same Chrominance phase error correction circuitry includes a demodulator for demodulating a received video color burst signal into first and second demodulated signals and signal generation circuitry for providing to the demodulator a demodulating signal for demodulating... | 02/12/2008 |
| 7319492 | Open loop subcarrier synchronization system A system and method for synchronizing signals having respective sub-carriers in a signal processing system. Various aspects of the present invention may comprise method steps and structure that receive a sampled signal with an associated sub-carrier. Various aspects... | 01/15/2008 |
| 7298418 | Method and system for processing in a non-line locked system Certain embodiments of the invention disclose a method and system for processing in a non-line locked system. The phase relationship between the sub-carrier signal on consecutive video lines in a video comb filter is determined by synchronizing the two video lines. ... | 11/20/2007 |
| 7193598 | Noise suppressing method for switching on/off flat panel display A noise suppressing method for switching on/off a flat panel display. A signal detect circuit and a video signal processor are embedded in a time controller IC. At the switch-on transient, the signal detect circuit functions to detect whether the signal is stable. W... | 03/20/2007 |
| 7061541 | Apparatus and method for compensating a color carrier of an image signal An apparatus to compensate a color carrier in an image processing system to convert an input analog image signal into a digital image signal includes a detector, a phase-locked loop unit, a difference detector, and a color signal processor. The detector detects a fr... | 06/13/2006 |
| 6992727 | Method for detecting video frame types with adaptive thresholds A method for detecting dynamic video pixels by using adaptive counter threshold values according to field difference value of the frame in the video, thereby to determine whether the frame is an interlaced frame or a progressive frame and to eliminate incorrect judg... | 01/31/2006 |
| 6947095 | Broadcast data receiver and method of use thereof A broadcast data receiver (BDR) is provided and a method of using the BDR for the production of a pseudo stable reference control for the reliable generation of composite video signals. The BDR receives video, audio and/or auxiliary data from a broadcaster can store... | 09/20/2005 |
| 6947060 | Image 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 |
| 6839092 | Feed forward error correction in video decoder In accordance with an embodiment of the present invention a microprocessor in the horizontal phased lock loop reads the horizontal timing with respect to the sync input and provides an increment inch to the horizontal discrete time oscillator to make corr... | 01/04/2005 |
| 6765624 | Simulated burst gate signal and video synchronization key for use in video decoding A simulated burst gate signal and a video synchronization key are generated. A video decoder generates a horizontal sync pulse which is programmed to envelop a color burst, thereby simulating a burst gate signal. The offset to the horizontal sync pulse due to simula... | 07/20/2004 |
| 6310653 | Phase comparison and phase adjustment for synchronization to a reference signal that is asynchronous with respect to a digital sampling clock A periodic multi-bit digital signal is synthesized having a frequency that is specified by the frequency of a periodic reference signal that is asynchronous with respect to a sampling clock of the periodic digital signal. In a digital video system, for ex... | 10/30/2001 |
| 6246440 | Circuit for generating a reference signal A compact, inexpensive circuit for generating several stable reference signals from several burst signals is provided. The circuit comprises a first oscillator using a quartz oscillator; a second oscillator with a variable oscillation frequency having a r... | 06/12/2001 |
| 6175385 | Digital PLL circuit for MPED stream and MPEG decoder having the digital PLL circuit A digital PLL circuit employs a fixed-frequency output signal from a fixed-frequency oscillator, to provide a signal synchronized with an external reference signal. The digital PLL circuit has a counter and an adjuster. The counter counts clock periods (c... | 01/16/2001 |
| 6052152 | Digital carrier synthesis by counting cycles for synchronization to a reference signal that is asynchronous with respect to a digital sampling clock A periodic multi-bit digital signal is synthesized having a frequency that is specified by the frequency of a periodic reference signal that is asynchronous with respect to a sampling clock of the periodic digital signal. In a digital video system, for ex... | 04/18/2000 |
| 5940137 | Symbol timing generation and recovery for data transmission in an analog video signal A video transmission system and method including a technique for deriving clock information in a receiver from a transmitted analog video signal to decipher digital data encoded on the video signal. A phase-locked loop in the transmitter is used to phase-... | 08/17/1999 |
| 5917550 | Clock signal generator for composite video signal A clock signal generator and method for generating a clock signal which is synchronized with an input composite video signal. The generator comprises a synchronizing separator for separating a horizontal synchronizing signal from an input composite video ... | 06/29/1999 |
| 5822011 | Apparatus for detecting noise in a color video signal A phase detector provides angular phase error measurements of the color burst component of a video input signal. Burst phase errors exceeding a given angular threshold are detected and the number occurring within a given period of time are counted. From t... | 10/13/1998 |
| 5815214 | Oscillatory signal generator arrangement An arrangement for synchronizing a digitally generated color subcarrier signal to the color burst signal from another video signal, such as that from a video casette recorder or from a cable television signal, in a manner that allows a line locked clock t... | 09/29/1998 |
| 5808691 | Digital carrier synthesis synchronized to a reference signal that is asynchronous with respect to a digital sampling clock A periodic multi-bit digital signal is synthesized having a frequency that is specified by the frequency of a periodic reference signal that is asynchronous with respect to a sampling clock of the periodic digital signal. In a digital video system, for ex... | 09/15/1998 |
| 5784122 | Chroma lock detector A chroma lock detector circuit monitors charge pump control signals within a phase-lock loop to determine when two input signals to the phase-lock loop are locked together in phase and generates an output signal which is active when the two input signals ... | 07/21/1998 |
| 5767915 | Digital color burst phase switch for pal video systems A digital color burst phase switch for determining phase shift of a color burst signal in a PAL video signal includes a phase selector for selecting either a first reference clock or a second reference clock in response to a PAL switch signal. A phase del... | 06/16/1998 |
| 5715018 | Digital advertisement insertion system Digital audio/video insertion and broadcast system. The system takes audio/video source information and digitizes, compresses and stores the information. The storage is in a random access medium such as magnetic or optical disks. Playing apparatus decompr... | 02/03/1998 |
| 5703656 | Digital phase error detector for locking to color subcarrier of video signals A digital phase error detector for locking to a color subcarrier signal in an analog video signal. The digital phase error detector includes a digitizer responsive to a sample clock which generates a first digital data stream from the analog video signal.... | 12/30/1997 |
| 5621472 | System for inexpensive phase coherent subcarrier generation The present invention is a system for inexpensive phase coherent subcarrier generation. The subcarrier sequence has a fairly short periodicity (two lines), allowing a relatively short lookup table to hold coded values precisely representing the sampled su... | 04/15/1997 |
| 5510847 | TV signal decoding apparatus using luminance and color signal selection The object of the present invention is to use signal decoding circuits for a first generation EDTV signal and a second generation EDTV signal in common and to suppress an increase of circuit scale. An EDTV signal decoding apparatus of the present invention is ... | 04/23/1996 |
| 5475440 | Digital time base corrector for video signal reproduction A digital time base corrector which can perfectly eliminate residual errors. A sync clock signal whose phase is synchronized with a time base fluctuation included in a reproduction video signal is formed in accordance with at least one of the horizontal s... | 12/12/1995 |
| 5387941 | Data with video transmitter Signal processors for permitting the transparent, simultaneous transmission and reception of a data signal in the video bandwidth is disclosed. The signal processor in the transmitter rasterizes the data at the horizontal scanning rate and modulates the d... | 02/07/1995 |
| 5355171 | Digital oscillator and color subcarrier demodulation circuit having the digital oscillator A digital oscillator including an integrator for cumulatively integrating a specified signal and a controller responsive to a control signal for maintaining the output frequency of the integrator within a limit corresponding to the amplitude of the contro... | 10/11/1994 |
| 5353066 | Method for preventing the deterioration of picture quality in a video processor and circuit thereof A method and circuit for preventing the deterioration of picture quality in a video processor is disclosed in which, when an input color video signal is input, a clock signal for a combfilter is locked with a phase-locked loop (PLL) by a burst signal and ... | 10/04/1994 |
| 5339112 | Automatic phase controlling circuit for processing reproduced chroma signals A low range chroma signal reproduced from a recording medium is converted in the frequency by a frequency converter to obtain an original carrier chroma signal, then the carrier chroma signal is passed through a comb filter for removing a crosstalk and is... | 08/16/1994 |
| 5166781 | Apparatus for identifying standard and non-standard video signals A source responsive to a composite video input signal provides line and burst frequency related timing signals. A measuring circuit responsive to the timing signals provides measurement values which tend to repeat when the video input signal is of a given... | 11/24/1992 |
| 5053862 | Apparatus and method for generating a horizontal reset signal synchronous with a subcarrier locked clock A method and apparatus for synchronizing a received television signal to a subcarrier locked signal is provided. The apparatus includes a comparison block for determining whether the received television signal and subcarrier locked signal are related by a... | 10/01/1991 |
| 4985757 | Digital video signal processing system A signal separator performs an inter-line operation on a composite color video signal, thereby separating it into a luminance signal and a chrominance signal. A scan converter converts each of the luminance signal and the chrominance signal into a sequent... | 01/15/1991 |
| 4977445 | Sync-signal reproducing circuit for use in television receiver A color subcarrier reproducing circuit reproduces a color subcarrier on the basis of a color burst signal in a color television signal in which phase reference data synchronized with the color burst signal is inserted in a predetermined position in a vert... | 12/11/1990 |
| 4908582 | AFC circuit for producing a ripple-free oscillator control voltage An AFC circuit using counters, flip-flops and logic gates produces a first pulse signal only when the phase of a VCO output signal lags the phase of a reference signal, and produces a second pulse signal only when the phase of the VCO output signal leads ... | 03/13/1990 |
| 4860090 | Digital signal processing circuit driven by a switched clock and used in television receiver for processing standard and nonstandard television signals A digital television receiver includes a decision circuit for deciding whether an input television signal is a standard signal or a nonstandard signal. A first clock signal generator circuit for generating a first sampling clock signal synchronized with a... | 08/22/1989 |
| 4697207 | System for generating a synchronizing signal in response to two timing reference signals A method and system for composite system phase control in a signal processor such as a television video recorder operating in a genlocked system. A synchronizing signal, preferably a frame-rate horizontal reset pulse, is generated in response to coinciden... | 09/29/1987 |
