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| Number | Title | Issue Date |
| 7391472 | System and method for adaptive color burst phase correction We describe and claim an adaptive color burst phase correction system and method. The adaptive color burst phase correction system includes a signal detector to extract a color burst from a video signal, the color burst including a phase and an amplitude, an adaptiv... | 06/24/2008 |
| 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 |
| 7245671 | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers Systems and methods for receiving non-coherent layered modulation signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital c... | 07/17/2007 |
| 7180537 | Relative channel delay measurement A method of measuring relative channel delay between components of a video signal includes removing a local mean from each of the pair of input component signals and cross-correlating the resulting pair of input component signals. A mean is removed from the cross-co... | 02/20/2007 |
| 7167208 | Digital broadcasting receiver and method for compensating color reproduction error of the same Digital broadcasting receiver, and method for compensating a color reproduction error therein, the digital broadcasting receiver including a channel decoder, a TP part for demultiplexing a TP stream from the channel decoder for being provided with a PCR (Program Clo... | 01/23/2007 |
| 6975362 | Video signal converter for converting non-interlaced to composite video A VGA to analog video converter is useful e.g. for displaying video and/or graphics data from a computer onto a large screen television or television monitor. The RGB video signals output from the personal computer are first converted to digital form. The analog-to-... | 12/13/2005 |
| 6961039 | Method and apparatus for sparkle reduction by reactive and anticipatory slew rate limiting A circuit (10) for reducing errors due to adjacent pixel interdependence in a liquid crystal display includes a decomposer (12) for dividing an input signal into a plurality of signals having at least a high brightness signal and at least one low brigh... | 11/01/2005 |
| 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 |
| 6538648 | Display device A display device including a clock generation circuit for generating sampling clocks, whose frequency is variable, on the basis of a horizontal synchronizing signal of an input image signal; an analog-to-digital converter for sampling the input image sign... | 03/25/2003 |
| 5907368 | Information processing apparatus having function capable of displaying image by television signal Vertical and horizontal sync signals are separated from an NTSC signal inputted from an outside by an external input circuit and a luminance signal (Y) and chrominance signals (B-Y, R-Y) are extracted and converted into RGB data. External RGB data and RGB... | 05/25/1999 |
| 5786866 | Video color subcarrier signal generator A color subcarrier signal generator for use e.g, in a video converter measures the average error of the horizontal synchronizing signal frequency. The measured error is used as a compensator signal to control a direct digital synthesizer to generate a cor... | 07/28/1998 |
| 5528317 | Timing circuit for video display having a spatial light modulator A method and apparatus for synchronizing display timing in a digital television system with a pixel addressable display having a color wheel is disclosed. The display timing circuit 22 includes phase comparator 40, for comparing the phase of a wheel index... | 06/18/1996 |
| 5515108 | Digital automatic frequency control method and circuit therefor A digital automatic frequency controlling method and circuit therefor in which a digital horizontal sync signal is separated from an input horizontal sync signal in response to a system clock, a horizontal sync separation point value is extracted, an actu... | 05/07/1996 |
| 5371541 | Phase-converting circuit for superimpose control A superimpose control device which enables a superimpose function even in a VTR mode, by using a phase convening circuit for synchronizing the phase of a sub-carrier signal with the color burst signal of an applied video signal. The device includes a memo... | 12/06/1994 |
| 5365283 | Color phase control for projection display using spatial light modulator A SLM-based projection display system (10) samples and processes video data for delivery to a spatial light modulator (SLM) (13c), and uses a color wheel (14a) to color the SLM-generated images. A frame memory (13b) provides data to the SLM (13c) and is m... | 11/15/1994 |
| 5054904 | Aspheric lens blank The present invention provides an aspherical spectacle lens blank. The lens blank is generally circular in shape and includes a central circular zone which is surrounded by three or more concentric outer zones. For a plus power lens, the outer zones decre... | 10/08/1991 |
| 4792846 | Component television timing corrector A component television timing corrector uses edge transitions in the program material of a television signal to determine the time differences between color component signals of the television signal due to the processing of the color component signals al... | 12/20/1988 |
| 4769692 | Method and apparatus for calibrating the phase of a video signal The color burst of a first video signal is brought into a desired phase relationship with the color burst of a second video signal by generating a first number which is representative of the phase relationship between the burst of the second video signal ... | 09/06/1988 |
| 4531149 | Digital variable group delay equalizer for a digital television receiver Digital TV receivers which digitally process chroma and luma signals in different channels and convert the digital signals to analog form before matrixing will include low pass analog filters after the DAC's to remove clock switching components. The luma ... | 07/23/1985 |
| 4485395 | Misregistration prevention in two channel VTRS A tape has Y and C components of a television signal recorded in different tracks. This can lead to mistiming and hence misregistration errors. To correct this a phase error signal is generated from the horizontal sync signals in each track and used to co... | 11/27/1984 |
| 4003078 | Sub carrier phase shifters A sub carrier phase shifting circuit for use in digital television equipment comprising at least two monostable multivibrators connected in cascade. The sub carrier signal is applied to the first multivibrator. Adjusting means are connected to the control... | 01/11/1977 |
