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| Number | Title | Issue Date |
| 7321403 | Video signal transmitting/receiving system In a transmitting section for a video signal transmitting/receiving system for transmitting digital video signals using a plurality of transmission channels, video guard band signals are inserted into video signals associated with the transmission channels immediate... | 01/22/2008 |
| 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 |
| 6967688 | Method and apparatus that reduces jitter in a display by providing temporal hysteresis A method and apparatus is directed to reducing jitter of the position of an On Screen Display (OSD) associated with a display device. Multiple horizontal signals are produced in response to a vertical flyback signal and a horizontal flyback signal for the display de... | 11/22/2005 |
| 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 |
| 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 |
| 6690430 | Chrominance signal demodulation circuit A chrominance signal demodulation circuit capable of precisely processing a chrominance signal demodulation even when a phase of an inputted chrominance signal is abruptly changed due to a tape track skew error. A first and second color difference signals... | 02/10/2004 |
| 6327005 | Display device and method in digital TV A digital TV display device and method is disclosed including a display control unit providing selection signals, a look-up table unit having at least two look-up tables wherein at least one of the look-up tables is operative in a read mode and the other ... | 12/04/2001 |
| 5995164 | Reduction of color transition distortions in NTSC/PAL encoder In a video encoder, the color distortion between pixels can be reduced by encoding the hue transition to limit very large hue (phase) transitions and encode a corresponding smaller phase transition. This produces fewer spurious colors between pixels durin... | 11/30/1999 |
| 5404180 | Waveform shaping method, waveform shaping apparatus and apparatus for correcting contour of carrier chrominance signal A waveform shaping apparatus in which no unrequired waveform shaping operation is performed even if its sensitivity is enhanced is provided. A signal (A) to be shaped in waveform is delayed by delay circuits (1 and 2) to produce signals (B and C). The sig... | 04/04/1995 |
| 5150201 | Digital television-signal-processing circuit with orthogonal output clock A digital television-signal-processing circuit for a composite color signal is sampled with a first clock signal. The digitized composite color signal is reconverted with a line-locked second clock signal. The two clock signals have the same frequency. A ... | 09/22/1992 |
| 5081537 | Color image information inserting circuit for video signal recording and reproducing system A circuit for inserting color information into a video signal during either recording or reproduction. The circuit extracts a burst signal from a chroma signal input and generates a first color carrier phase-locked with the burst signal. The chroma signal... | 01/14/1992 |
| 5063437 | Method and apparatus for processing a color video signal This invention relates to a method and apparatus for processing a color video signal. The processing method separates an input composite color video signal into a luminance signal and chrominance signal, demodulates the separated chrominance signal into c... | 11/05/1991 |
| 5041904 | Video signal processing circuit In a digital video signal processing circuit where digital composite video signals are inputted and processed in separation into a luminance signal and a chrominance signal, the digital video signal processing circuit is provided with a device for separat... | 08/20/1991 |
| 4933748 | Apparatus for processing a color video signal In an apparatus for processing a repeatedly reproduced single field of a color video signal, the phase of a chrominance subcarrier in the color video signal is shifted by 90 degrees at each field period, and the single repeatedly reproduced field of the c... | 06/12/1990 |
| 4734757 | Color burst phase detection system for use in a video disk player system A system for detecting an inversion of burst phase of a video signal, includes a reference color subcarrier signal generator for generating a reference color subcarrier signal whose frequency is equal to the frequency of the color burst signal of the vide... | 03/29/1988 |
| 4660071 | Conversion of line sequential television color signal to simultaneous signals by alternating carrier phase injection A method for converting line sequential color signal to simultaneous signal is attained by selecting two color signals alternately every one horizontal scanning period. The color signals are applied to a balanced modulator. Two carriers with different pha... | 04/21/1987 |
| 4639768 | Video signal superimposing device A video signal superimposing device for superimposing and clearly displaying video signals produced from at least two discrete systems includes an input terminal for inputting a color complex video signal, a separation circuit for separating a first brigh... | 01/27/1987 |
| 4605951 | Apparatus for converting field video signals into frame video signals An apparatus for converting field video signals into frame video signals includes a modulation circuit for modulating a chrominance subcarrier with a color signal contained in a field video signal, a signal composing circuit for combining the modulated su... | 08/12/1986 |
| 4506286 | PAL digital video signal processing arrangement A PAL digital video signal processing arrangement includes converter circuitry for sampling a PAL system video signal in response to sampling pulses having sampling points associated with &#b1;U and &#b1;V modulation axes on a color vector plane to conver... | 03/19/1985 |
| 4460925 | Method and apparatus for deriving a PAL color television signal corresponding to any desired field in an 8-field PAL sequence from one stored field or picture of a PAL signal A single field or picture of a PAL color television signal is stored in a store and provides a signal at an input (52). The stored signal consists of 2fsc samples taken at 45° to the U-axis. The signal is separated by a filter (56) and subtrac... | 07/17/1984 |
| 4400718 | Digital television transmission using chrominance inversion At a transmitter, an analog NTSC color video signal is converted into a digital video signal and all of the signal components in the chrominance spectral band in alternate television frames are inverted. The resultant signal is transmitted via a low-speed... | 08/23/1983 |
| 4399454 | Digital comb filtering for PAL television signals A method and apparatus for comb filtering a PAL type television signal is described. Preferably, the television signal is digitized by sampling it at an even multiple of its chroma subcarrier frequency, thereby to convert the television signal to a series... | 08/16/1983 |
| 4374396 | Chrominance sub-carrier modifier for PAL-color television signals The present invention relates to a chrominance sub-carrier modifier for PAL-color television signals, particularly for signals from a video storage medium operating in a still picture mode.... | 02/15/1983 |
| 4348689 | Phase adjusting system for carrier chrominance signal A phase of a composite color television signal is adjusted by utilizing a signal which is one-field after or before relative to a current signal and which is a signal of the nearest scanning line. A difference signal between the color television signal an... | 09/07/1982 |
| 4345272 | Video signal processing apparatus In an apparatus for processing a color video signal including luminance and chrominance components and composed of successive frames each having a plurality of fields constituted by successive lines which are interlaced in a pictorial representation of a ... | 08/17/1982 |
| 4288810 | Method of and apparatus for deriving a PAL color television signal corresponding to any desired field in an 8-field PAL sequence from one stored field or picture of a PAL signal A single field of a PAL color television signal is stored in a store (50) and provides a signal at an input (52). The signal is delayed by one-line delays (56,58) in series to provide one and two-line delayed signals. Separate switching units (60,62) sele... | 09/08/1981 |
| 4280133 | Video signal processing circuit A video signal processing circuit particularly suited for eliminating undesirable picture vibration in the stop-motion, or slow-motion mode of a video reproducing apparatus includes a source of a video signal, a delay line for delaying the video signal on... | 07/21/1981 |
| 4223341 | Circuitry providing a delayed color television signal having luminance and chrominance components derived from adjacent lines In a method of and apparatus for processing 625-line PAL colour television signals, in which in conjunction with each line of the signal there is provided an additional signal for use therewith, the additional signal is formed essentially of the luminance... | 09/16/1980 |
| 4216493 | Chrominance signal processing circuit in color television receiver A chrominance signal processing circuit in a color television receiver which comprises a bandpass amplifier, a burst gate pulse source, a subcarrier generator, a 90° phase shifter for phase shifting the generated subcarrier, a B - Y demodulator and an R ... | 08/05/1980 |
| 4142205 | Interframe CODEC for composite color TV signals comprising means for inverting the polarity of carrier chrominance signals in every other frame or line An interframe encoder for a composite color television signal comprises an inverter for inverting the polarity of the carrier chrominance signal. Responsive to a switching signal synchronized with the frame or line periods, the television signal and the p... | 02/27/1979 |
