Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1988-08-23
1991-03-19
Harvey, David E.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358139, 358 13, H04N 968
Patent
active
050015494
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.
Bellis et al., "Digital Coding and Blanking" IBA Technical Review (GB), No. 8, 9/76, pp. 63-76.
M. Swart "Video-Test-Signal Generator SPF2" News from Rohde & Schwartz, vol. 20, 1980.
Hashimoto et al., "Digital Separation and Reconstruction of NTSC Signals" IEEE Transactions, vol. Com-28, No. 7, 7/80, pp. 1085-1088.
Lang et al., "Testing Color Reproduction by Means of a Programable Color Bar Generator" SMPTE Journal, vol. 87, pp. 579-582, 1980.
Holmbo Dennis L.
Penney Bruce J.
Reynolds John C.
Gray Francis I.
Harvey David E.
Tektronix Inc.
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