H - Electricity
04
N
H04N 17/02 (2006.01) H04N 9/79 (2006.01)
Patent
CA 2133099
2133099 9320659 PCTABS00027 A video storage arrangement produces a continuous video signal representing a test pattern. One luminance frame store is provided and two chrominance frame stores. A selection can be made between NTSC, PAL and SECAM modes. Switches are provided for selecting between chrominance frame stores and between inverting and non-inverting mode. Depending upon the selected broadcast standard, these switches are driven from field and line clock signals to generate the required output field sequence in YC or composite form.
Fetherstonhaugh & Co.
Snell & Wilcox Limited
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