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Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 7106387 | Keyed clamp circuit The keyed clamp circuit of this invention has the clamp circuit for clamping the video signal including the equalizing pulse and the vertical synchronization signal based on the clamp pulse, the synchronization signal separation circuit for separating the synchroniz... | 09/12/2006 |
| 7039187 | Signal reproducing/recording/transmitting method and apparatus and signal record medium A video signal reproduction system for receiving a video signal transmitted via a satellite communication link at a receiving device. A copy permission indicator is inserted in the received video signal. The copy permission indicator is generated on the basis of cop... | 05/02/2006 |
| 6928036 | Harmonic correction in phase-locked loops Correction for harmonic disturbances on rotating storage media in a phase-locked loop. The effects of harmonic disturbances in a phase-locked loop are reduced by employing harmonic correction. Harmonic correction may be present in the loop at all times, or may be sw... | 08/09/2005 |
| 6904232 | Method and apparatus for seeking the burst cutting area of DVD media Methods and apparatus for reading data from the burst cutting area of a digital video disc. The present location of an optical head assembly is determined. The distance from the present location of the optical head assembly to the burst cutting area is calculated. T... | 06/07/2005 |
| 6449421 | Video signal processor having a reduced number of oscillation units A video signal processor which includes a reference signal generating circuit provided with at least an oscillation circuit for generating a reference signal corresponding to a burst signal and a Y/C separation circuit for separating a video signal into a... | 09/10/2002 |
| 6347179 | Video signal processor A video signal processor which includes a reference signal generating circuit provided with at least an oscillation circuit for generating a reference signal corresponding to a burst signal and a Y/C separation circuit for separating a video signal into a... | 02/12/2002 |
| 5926602 | Time-base corrector circuit capable of adding color burst signal to output signal based on kind of input video signal A memory controller which controls writing/reading operation to/from a memory in a TBC circuit prohibits writing operation to the memory circuit in response to an activation of a frame grab signal after an A/D converted video signal for one frame is store... | 07/20/1999 |
| 5636312 | Video image mixing apparatus A video image mixing apparatus which can prevent a fluctuation of a mixed video image by a mixed video signal in the case where a playback video signal obtained by playing a recording medium in a special playing mode and a graphics video signal. When a di... | 06/03/1997 |
| 5608531 | Video signal recording apparatus A video signal recording apparatus in which a chroma signal contained in a video signal is down-converted and then recorded on a predetermined recording medium comprises a sampling circuit for processing the chroma signal in an offset sub-sampling fashion... | 03/04/1997 |
| 5608533 | Video signal recording/reproducing apparatus where the order of access to video data during a write mode is different than the order of access during a read mode A video signal recording apparatus digitizes video signals, writes the digital data in a memory and then reads them therefrom before recording the video signals on a recording medium. The orders of access to the addresses in the memory in write and read m... | 03/04/1997 |
| 5463475 | Semiconductor delay line driven by an input signal-derived reference signal A method of driving a CCD semiconductor delay line capable of providing a good delay characteristic without externally supplying a clock signal. An intermittent reference signal is extracted from the color burst signal of an inputted television signal. Us... | 10/31/1995 |
| 5412481 | Time-base correction in a video recording/playback system A video recording/playback system includes in its recording electronics time-base correctors both for luma signal and for color-under signal, the time-base corrector for luma signal being used to facilitate comb filtering and the time-base corrector for c... | 05/02/1995 |
| 5404230 | Color burst phase correcting color signal reproducing circuit A color signal reproducing circuit comprising a phase correction device receiving a gain-controlled composite color signal, detecting color burst signal in a composite color signal and correcting phase of the color burst signal by using a 3.58 MHz signal,... | 04/04/1995 |
| 5231507 | Information signal recording/reproducing apparatus with time base correction facility An information signal recording/reproducing apparatus includes a recording apparatus and a reproducing apparatus. The recording apparatus is arranged to record on a recording medium an information signal after angle-modulating the signal in such a way as ... | 07/27/1993 |
| 5220411 | Synchronizing phase shift corrected synchronous signal detecting apparatus In a system for eliminating time base fluctuation of a video signal having a synchronizing signal and a burst reproduced from a video disk, for example, the synchronism is first coarsely pulled in on the basis of the horizontal synchronizing signal and th... | 06/15/1993 |
| 5164838 | Time base error signal generating apparatus A time base error signal generating apparatus which outputs a phase difference signal representing a phase difference between a horizontal sync signal and a reference signal as a time base error signal. In accordance with the phase status of a vertical sy... | 11/17/1992 |
| 5153714 | Circuit for removing jitter of chrominance signal and television set using the same A frequency of a chrominance signal including a jitter component and separated from a color video signal is converted from a first frequency to a second frequency by first frequency converting device. Then, the chrominance signal which frequency is conver... | 10/06/1992 |
| 5083213 | Chrominance signal processing circuit and video tape recorder having function of processing chrominance signal A chrominance signal processing circuit of VTR comprises a first frequency converting circuit (3) for converting a frequency of a chrominance signal in a video signal. The frequency converting circuit multiplies an inputted chrominance signal and a four-p... | 01/21/1992 |
| 4989073 | System for compensating timing errors during sampling of signals At the input to a video signal time base corrector, the phase error is sampled during each burst interval and is used to control the operation of an analog-to-digital convertor to compensate for phase errors at the start of each line. Progressive phase er... | 01/29/1991 |
| 4864387 | PAL video time base corrector inverts color difference signal (V) axis A time base corrector converts an analog input PAL image signal including a certain time base error to digital form and then stores it in a memory by using a write clock signal derived from the input PAL image signal including the time base error. The sto... | 09/05/1989 |
| 4847678 | Dual mode gen-lock system which automatically locks to color burst or to sync information A dual mode gen-lock system generates high frequency clocking pulses which are automatically synchronized to an external video signal. During the presence of color burst information in the external video signal, the clocking pulses are synchronized to the... | 07/11/1989 |
| 4797730 | Method and apparatus for controlling the sampling phase of an analog color television signal A composite analog video signal is sampled at precise locations relative to the phase of the unmodulated color subcarrier along each horizontal line of the video signal. This provides a digitized signal with a constant phase relationship relative to the u... | 01/10/1989 |
| 4772937 | Skew signal generating apparatus for digital TV A divider divides down the output of a high frequency oscillator to generate a master clock signal MCS for the purposes of sampling an incoming composite video signal CVS. A skew measuring circuit latches the current state of the divider at a predetermine... | 09/20/1988 |
| 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 |
| 4752833 | Circuit arrangement for a video recorder A circuit arrangement for a video recorder comprises a modulator (5) for modulating a chrominance signal from a first onto a second carrier wave by means of a third carrier wave. In order to generate the third carrier wave a first mixer (39) is coupled to... | 06/21/1988 |
| 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 |
| 4724476 | Chrominance signal processing apparatus A chrominance signal processing apparatus for converting an input carrier chrominance signal received in a first operation mode to an output low-band converted chrominal signal, and for converting an input low-band converted chrominance signal received in... | 02/09/1988 |
| 4714954 | Read start pulse generator for time base corrector A read start pulse generator comprises circuit elements for automatically adjusting the phase of a read start pulse signal by cancelling phase offset caused when phase adjustments are made to a synchronizing signal, burst signal, and hue signal.... | 12/22/1987 |
| 4709276 | Time base corrector Whenever component signals (color difference signals) of a video tape recorder signal are recorded in a recording medium in accordance with timeplex (time division multiplex) method, velocity error inevitably occurs because there always exists a differenc... | 11/24/1987 |
| 4688081 | Apparatus for correcting time base error of video signal In order to correct a time base error of a video signal reproduced from a video signal recording/reproducing apparatus such as a VTR or the like, when the reproduced video signal is sequentially written into or read out from a memory, a signal which is ob... | 08/18/1987 |
| 4688103 | Apparatus for the color synchronization of reproduced video signals An apparatus for the color synchronization of reproduced video signals, including a phase-locked loop (PLL) circuit. The PLL circuit detects a phase difference between a reproduced video signal (which may be a PAL video signal), and the output of a voltag... | 08/18/1987 |
| 4675724 | Video signal phase and frequency correction using a digital off-tape clock generator In a time base correction system, a composite color television analog signal derived from a prerecorded tape is converted by an analog-to-digital (A/D) converter to a digital signal having horizontal sync and color burst signal components. The digitized s... | 06/23/1987 |
| 4663659 | Video signal scrambling system employing full line reversal and double burst coding A memory reverses the sequence of samples of selected lines of a composite video input signal without separating the color burst and chrominance components of the lines thereby preserving chroma-burst phase integrity of scrambled lines. A burst inserter a... | 05/05/1987 |
| 4647984 | Time axis deviation compensation apparatus An apparatus for compensation of time axis deviations of a reproduced composite video signal, based on detection of phase deviations of the horizontal sync and color burst components respectively of that video signal, incorporates a summing circuit in whi... | 03/03/1987 |
| 4590510 | System for processing a composite color television signal obtained from a recording medium An uncorrected composite color television signal, including frequency-modulated luminance and frequency-transposed chrominance components is recovered from a storage medium and separated by filters into its luminance and chrominance components. The chromi... | 05/20/1986 |
| 4573086 | Color television signal converting circuit In a video disc player system, the NTSC color TV signal is recorded on the video disc, of which carrier chroma signal has been lowered to e.g., 1.52 MHz, due to limitations on the available frequency band within this system. To reproduce this recorded TV ... | 02/25/1986 |
| 4561013 | Color sign inserting circuit for video signal reproducing system A color sign inserting circuit for a video signal reproducing system is disclosed, which comprises a the color burst detecting circuit for extracting color burst from a video signal detected from a recording system, a flywheel oscillator locked to the ave... | 12/24/1985 |
| 4544943 | Stabilized color television subcarrier regenerator circuit A subcarrier regenerator circuit for use in color television receiver demodulators. The regenerator includes a voltage-controlled oscillator and a fixed frequency oscillator set to the nominal subcarrier frequency. During the vertical retrace period, a ph... | 10/01/1985 |
| 4516160 | Information recording and reproducing system In a color video information reproduction system such as video disc player and video tape recorder, the color burst signal is inserted into each horizontal period even during the vertical blanking period of a video information signal when the video inform... | 05/07/1985 |
| 4477839 | Color video signal reproducing apparatus A color video signal reproducing apparatus responds to either PAL or SECAM signals by separating a carrier chrominance signal and a luminance signal from a color video signal which is reproduced from a recording medium. The separated carrier chrominance s... | 10/16/1984 |
