Quotables
"Without question, the greatest invention in the history of mankind is beer. Oh, I grant you that the wheel was also a fine invention, but the wheel does not go nearly as well with pizza."
Dave Barry
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 |
| 8174621 | Digital video decoder architecture A digital video decoder architecture is provided wherein chrominance values are determined first, then luminance values are determined, in part, based on the previously determined chrominance values. In this architecture, luminance separation occurs after and based ... | 05/08/2012 |
| 8107013 | Frequency demodulator for recovering SECAM chrominance signal and method thereof An apparatus for recovering a chrominance signal from a sequential color with memory (SECAM) composite video baseband signal (CVBS), and more particularly, to a frequency demodulator and method of recovering a SECAM chrominance signal which can utilize both a real n... | 01/31/2012 |
| 7800696 | Delay circuit and video signal processing circuit using the same A delay circuit acquiring an output signal delayed from an input signal, comprising: a switched capacitor group that includes a plurality of switched capacitor units, wherein each of the plurality of switched capacitor units has a charging MOS transistor and a disch... | 09/21/2010 |
| 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 |
| 7349033 | Systems and methods for correcting color phase error in video systems Systems and methods are provided for correcting color phase error in a video decoder system. A demodulator system demodulates the composite input signal and the at least one delayed signal to produce sets of baseband chroma components based on a phase correction val... | 03/25/2008 |
| 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 |
| 7298423 | Time based digital FM demodulator A time-based, digital FM demodulator circuit receives a stream of digital samples corresponding to an analog FM waveform. The samples are provided to a zero crossing detector, which allows a counter to determine a number of clock cycles between zero crossings. The r... | 11/20/2007 |
| 7277134 | Chrominance signal demodulation apparatus An NTSC system chrominance signal demodulation apparatus is provided with a clock timing change circuit for burst-locking an input signal under the state where the phase is shifted by 90 degrees for every line, and phase axis rotation circuits for performing phase a... | 10/02/2007 |
| 7233350 | Image sensor with interleaved image output An image sensor with a light reader circuit coupled to a pixel array. The light reader circuit retrieves a first image and a second image generated by the pixel array. The image sensor may also include a memory controller and/or data interface that transfers the fir... | 06/19/2007 |
| 7227582 | Graphics display system with video synchronization feature 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, graphics input and audio input simultaneously. The system includes a video decoder having a chroma-... | 06/05/2007 |
| 7224407 | Color demodulation device, color demodulation method and image display device A color demodualation device having an AD converter, a phase signal generator, a burst data generator and a multiplier. The AD converter produces digital samples of chrominance signal at a frequency four times a color subcarrier frequency, and the phase signal gener... | 05/29/2007 |
| 7173983 | COFDM demodulator with FFT analysis window displacement compensation A COFDM demodulator including a fast Fourier transform circuit analyzing a received signal in a window corresponding to one symbol, each symbol carrying several phase and amplitude modulated carriers, some of which are shifted in frequency in a predetermined way fro... | 02/06/2007 |
| 7034868 | Image processing circuit A pixel clock is switched to a high speed for reading culled pixel data from a CCD or switched to a low speed for reading all pixels from the CCD when picking up an image of an object, so that a main memory stores a first field initially read from the CCD and an RPU... | 04/25/2006 |
| 6996200 | Device for use in controlling a sample rate A first device comprises a loop circuit to control a sample rate of a digital circuit element. A circuit comprises a digital loop circuit to control a sample rate of a digital circuit element to be a function of a frequency of a signal received by the circuit. A sec... | 02/07/2006 |
| 6956622 | Method 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 |
| 6952239 | Sine generation circuit, phase shift circuit and tint adjustment circuit A phase shift circuit includes a first sine generation circuit generating a sine-converted output signal (sin θ) of the phase shift input signal (θ) and a reversed sine-converted output signal (−sin θ) of the phase shift input signal (θ), a cosine generation c... | 10/04/2005 |
| 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 |
| 6943847 | FM demodulator for SECAM decoder A SECAM decoder and an FM modulator therefor are disclosed, in which a demodulated color signal is provided to indicate deviations in the frequency of modulated color information from a nominal subcarrier frequency. The demodulator comprises numerator and denominato... | 09/13/2005 |
| 6888579 | Method and system for tint control for component video signals A method and system are provided for controlling tint of component video signals. The system includes a first input for receiving a first component video signal; a second input for receiving a second component video signal; circuitry including a first differential a... | 05/03/2005 |
| 6833875 | Multi-standard video decoder A video decoder for decoding a composite video signal. The decoder includes an analog-to-digital converter (ADC), an input resampler, and a Y/C separator, all coupled in series. The ADC receives and digitizes the composite video signal to generate ADC samples. The i... | 12/21/2004 |
| 6744472 | Graphics display system with video synchronization feature 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, graphics input and audio input simultaneously. The system includes a video decoder having a chroma-... | 06/01/2004 |
| 6665021 | System and process for filtering single tone signals A signal processing system and process for digitally filtering a single tone digital signal is disclosed. The system includes a single tone signal generator, which may or may not perform frequency modulation. The single tone signal generator receives an i... | 12/16/2003 |
| 6567129 | Color demodulating device A color demodulation apparatus having color demodulation capabilities as the conventional ones, with its size reduced by sharing part of processing circuit therein is provided. An adder circuit 10 and a SW circuit 11 shift the phase of a ramp wave generat... | 05/20/2003 |
| 6496227 | System with chrominance delay lines A system with chrominance delay lines has a first sampled channel including at least one smoothing filter, and has a second unsampled channel. A continuous bypass filter is placed in the second channel to balance the pulse response from these two channels... | 12/17/2002 |
| 6433837 | Demodulator, particularly for a SECAM chrominance signal, with double frequency adjustment The demodulating device for a chrominance signal includes an oscillator with a controlled frequency, and an adjuster for adjusting the oscillator frequency as a function of a charge voltage of a memory capacitor. The adjuster preferably includes a fine ad... | 08/13/2002 |
| 6392713 | Digital processing amplifier A procamp to color transforms component digital video data. The procamp includes a digital multiplier coupled to receive component digital video data corresponding to at least two different pixel parameters. The digital multiplier is configured to selecti... | 05/21/2002 |
| 6377316 | Tuner with switched analog and digital modulators A television receiver includes a tuner for receiving either analog or digital signals. Separate analog and digital demodulators are selectively coupled to the tuner through an RF switch that is controlled by the signal from a sync detector in the output o... | 04/23/2002 |
| 6330034 | Color phase-locked loop for video decoder A microprocessor controlled color phase locked loop is provided which provides flexibility and adaptability for different television standards and sampling rates. Color burst phase error and color burst amplitude information are stored in data registers l... | 12/11/2001 |
| 6215528 | Method and apparatus for digital multi-standard color signal demodulation The key component of a digital PAL or NTSC color decoder is a quadrature demodulator for these AM modulated signals. For a SECAM color decoder, however, an FM demodulation is required which is conventionally implemented using a Hilbert filter which is fol... | 04/10/2001 |
| 6064446 | Color decoding In a method of demodulating an analog chrominance signal (C), digital quadrature signals are generated (DPA, SIN ROM, COS ROM) for demodulating (MUL DAC U, MUL DAC V) the analog chrominance signal (C) to obtain analog demodulated color difference signals ... | 05/16/2000 |
| 6061101 | Digital color signal modulating apparatus An apparatus to modulate the digital color signal using a simple circuit that utilizes neither multiplier nor ROMs to multiplying a sine wave and cosine wave. The digital color signal modulating apparatus includes a first selector, a second selector 3, an... | 05/09/2000 |
| 5929937 | Device and method for generating a composite color signal with digital QAM A device and method for generating a composite color signal are disclosed. The device includes a first memory unit for storing digital cosine data, a second memory unit for storing digital sine data, a first arithmetic unit for multiplying digital color d... | 07/27/1999 |
| 5894334 | Carrier recovery system for a vestigial sideband signal A television signal receiver for processing an HDTV signal transmitted in a vestigial sideband (VSB) format includes input complex filters shared by a timing recovery network (30) and a carrier recovery network (50). The filter network includes a pair of ... | 04/13/1999 |
| 5798948 | Method and apparatus for video filtering A method and apparatus for video filtering filters video frames by determining a set of frames to be used to generate a single filtered frame. This set of frames is then combined to generate a single combined image. In one embodiment, proportions of the l... | 08/25/1998 |
| 5796786 | Phase error detecting method and phase tracking loop circuit A phase error detecting method is applied to a VSB receiver or a QAM receiver. Q-channel data is recovered by digitally filtering transmitted I-channel data, and the phases of the I-channel data and the Q-channel data are corrected according to a fed-back... | 08/18/1998 |
| 5748262 | Method of digitization of intermediate frequency signals in particular television signals, and device for implementation of the method A method of digitization of an intermediate frequency signal having a bandwidth that can change from one standard to another and of which one of the frequency limits of this band is substantially constant, wherein before converting the analog signal into ... | 05/05/1998 |
| 5703660 | System and method for decoding a quadrature ampliture modulated signal A video signal decoder using a sample clock tied to a frequency that is an integer multiple of four times the color subcarrier (4*Fsc). By using a 4*Fsc rate on a given input wave, the decoder determines the phase shift between the sample clock and the or... | 12/30/1997 |
| 5621478 | Multistandard decoder for video signals and video signal decoding method The invention relates to a digital multistandard decoder for composite video signals. The multistandard decoder according to the invention can selectively process NTSC or PAL video signals and there is no need to know the corresponding signal standard bef... | 04/15/1997 |
| 5621477 | Digital decoder and method for decoding composite video signals A system for the digital decoding of composite video signals (CVBS), comprising a brightness signal (luminance component Y) and two color difference signals (chrominance components U, V). The system modulates a color subcarrier according to the quadrature... | 04/15/1997 |
| 5576769 | Automatic synchronization switch for side-by-side displays A video display system comprises a video display for simultaneously displaying pictures representative of first and second video signals, having first and second synchronizing signals respectively. A switch selectably couples the video display with one of... | 11/19/1996 |
