Television – Image signal processing circuitry specific to television – Color encoder or chrominance signal modulator
Patent
1997-09-16
1999-06-29
Kostak, Victor R.
Television
Image signal processing circuitry specific to television
Color encoder or chrominance signal modulator
348654, H04N 965
Patent
active
059175559
ABSTRACT:
A composite video signal generator, which can be simply implemented using an application-specific integrated circuit (ASIC), is provided. The composite video signal generator according to the present invention has an oscillator for generating a clock signal at 4.multidot.f.sub.x of a color burst signal. A color burst generator creates the color burst signal by dividing the frequency of the clock signal and switching the divided clock signal according to a first control signal. A color signal is generated by phase-shifting the clock signal according to a second control signal to produce a phase-shifted clock signal, and dividing the frequency of the phase-shifted clock signal. The angle of the phase-shifting corresponds to a particular color. A luminance signal processor converts received luminance data into an analog luminance signal according to a third control signal. A timing/sync signal generator outputs the first, second, and third control signals, a composite sync signal, and outputs the luminance data included in the color signal to the luminance signal processor. A mixer mixes the color burst, the color signal, the luminance signal, and the composite sync signal to output the mixed result as the composite video signal. According to the present invention, the composite video signal generator can be easily made using an ASIC without complicated peripheral circuitry, and colors can be easily realized.
REFERENCES:
patent: 4962427 (1990-10-01), Lann et al.
patent: 5051817 (1991-09-01), Takano
patent: 5389949 (1995-02-01), Nakada et al.
patent: 5404230 (1995-04-01), Hong
patent: 5500739 (1996-03-01), Strolle et al.
patent: 5579057 (1996-11-01), Banker et al.
patent: 5767920 (1998-06-01), Jo
Kostak Victor R.
Samsung Electronics Co,. Ltd.
LandOfFree
Composite video signal generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composite video signal generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite video signal generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1380085