Television signal generator

Details Television signal generator Television signal generator

1990-02-13

1992-10-27

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 13, 358139, H04N 1702

Patent

active

051594358

ABSTRACT:
A television signal generator which is fully digital has digital data stored in PROMs, one PROM for each component of the desired encoded television signal corresponding to luminance data and chrominance data. A system clock allows a signal address generator to fetch data from the PROMs. The chrominance data from the PROMs is mixed with appropriate digital representations of a sinusoidal function and a phase offset and is added to the luminance data. The combined digital signal is converted to analog, filtered and output as the desired encoded television signal.

REFERENCES:
patent: 4349833 (1982-09-01), Clarke
patent: 4718018 (1988-01-01), Sloane et al.
Lang et al., "Testing Color Reproduction by Means of a Programmable Color Bar Generator", SMPTE Journal, vol. 87, pp. 579-582, 1980.
Bellis et al., "Digital Coding and Blanking", IBA Technical Review (GB), No. 8, Sep. 1976, pp. 63-76.
M. Swart, "Video-Test-Signal Generator SPF-2", News from Rohde & Schwartz, vol. 20, 1980.
Hashimoto et al., "Digital Separation and Reconstruction of NTSC TV Signals", IEEE Transactions, vol. Col 28, No. 7, Jul. 1980, pp. 1085-1088.

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