Digital-to-analog conversion multiple-format video encoder

Details Digital-to-analog conversion multiple-format video encoder Digital-to-analog conversion multiple-format video encoder

2006-04-25

2006-04-25

Yenke, Brian (Department: 2614)

Television

Image signal processing circuitry specific to television

Color encoder or chrominance signal modulator

C348S555000, C348S557000, C348S659000, C348S660000, C348S661000

Reexamination Certificate

active

07034894

ABSTRACT:
A multiple-format video encoder stores values of the sine and cosine functions in a ROM. According to the externally specified video format, an address calculating circuit calculates the addresses at which to access the ROM. In the multiple-format video encoder, a luminance/color-difference signal generating circuit generates color-difference signals B-Y and R-Y from digital RGB signals. A first multiplying circuit multiplies the color-difference signal B-Y by the values of the sine function stored in the ROM at the addresses specified by the address calculating circuit and multiplies the color-difference signal R-Y by the values of the cosine function stored at the same addresses.

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