| Patent Number |
Title Of Patent |
Date Issued |
| 4716462 |
Motion adaptive television signal processing system |
December 29, 1987 |
| A motion adaptive television signal processing system is disclosed. An image change estimator estimates the image change over an image time interval. A television signal processor adaptively processes the signal in response to a control signal. A control signal generator is coupled b |
| 4686561 |
Vertical detail information restoration circuit |
August 11, 1987 |
| In a composite color video signal, a portion of the signal spectrum is shared by high frequency vertical detail information, and high frequency modulated color difference (I) information. A circuit is described which determines whether the information in the shared frequency band is |
| 4682213 |
Magnitude independent hanging dot detector |
July 21, 1987 |
| A hanging dot detector for a video signal processor including a comb filter is disclosed. The respective phases of the signals in the band of frequencies normally containing color representative information of both the comb filtered chrominance and luminance signals are detected. The |
| 4670665 |
Digital pulse width detector |
June 2, 1987 |
| Apparatus for passing digital pulses from a bilevel digital signal source having widths wider than a given minimum and narrower than a given maximum is described. A first duration sensitive signal gate is coupled to the signal source and passes only signals having widths wider than the g |
| 4636735 |
Duration-sensitive digital signal stretcher |
January 13, 1987 |
| Clocked control signals are applied from a source to the input of delay means having a plurality of successive signal takeoff points, with the delay between successive ones of said takeoff points being the same (e.g., a period at the signal clocking frequency, f.sub.CL). An "and" gate is |
| 4630102 |
Digital chroma overload system |
December 16, 1986 |
| A system for detecting overload conditions of a chrominance signal in which the chrominance signal is compared to a predetermined maximum desired amplitude value. Occurrences of the chrominance signal exceeding the predetermined amplitude are considered to be overload conditions only if |
| 4626894 |
Signal filtering system having adaptively cascaded filter stages for developing a variable bandw |
December 2, 1986 |
| An adaptive filtering system is disclosed. The system is used in a digital television receiver to extract low frequency vertical detail information from a comb filtered chrominance signal. This system provides wide bandwidth vertical detail information when the amplitude of the chrom |
| 4623924 |
Video signal auto peaking circuitry |
November 18, 1986 |
| A peaking circuit for use in a digital video signal processing system includes a digital peak detector which produces a peak magnitude whenever the slope of the video signal changes polarity. The peak magnitudes, and the absences of peaks are summed in an accumulator over a field period. |
| 4466015 |
Automatic color burst magnitude control for a digital television receiver |
August 14, 1984 |
| An automatic color burst magnitude control (ACC) for a digital television receiver is compatible with and is unaffected by variation of the phase of the color subcarrier signal introduced in demodulating the color subcarrier to effect control of tint. ACC is effectuated by digital gain |
| 4464679 |
Method and apparatus for operating a microprocessor in synchronism with a video signal |
August 7, 1984 |
| A microprocessor is provided in a television receiver which is responsive to a clock signal phase locked to a recurrent signal component of a composite video signal, such as a horizontal line rate signal component. The clock signal frequency is chosen to be an integer multiple of the |
| 4413282 |
Television ghost signal detection during the video information interval |
November 1, 1983 |
| A method and apparatus are presented for detecting the presence of ghost signal contamination of a video signal by examining the picture information interval of the video signal. A baseband video signal is detected and examined to detect signal transitions. Transitions of the main vi |
| 4402013 |
Video signal analyzer |
August 30, 1983 |
| Apparatus is provided which is responsive to a video signal for producing a position-modulated pulse train which is representative of the occurrence of transitions of the video signal. A transversal filter is responsive to the video signal and produces a differentiated replica of the vid |
