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US 5,349,388 AGranted
Video signal generating apparatus
AssigneeSony United Kingdom Limited
InventorsAlan Turner, Mukesh Chouhan, David J. Hedley
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Abstract
A video signal generating apparatus comprises a first microprocessor (10) including a memory (16) for receiving and storing in non-real time instructions for the generation of a range of video signals, such as test patterns, digital multi-effect keys or wipe patterns for a digital switcher, and a second microprocessor (14) for reading the instructions and generating a selected required video signal in real time.
Claims7
A video signal generating apparatus comprising:
- input means for inputting data relating to a video signal to be generated and representing signal pixel start addresses, signal start levels at said signal start addresses, and signal increment values;
- a plurality of adder means for adding modification levels to said signal start levels for respective video outputs;
- start value modification control means for generating a number of said modification levels, the number of said modification levels corresponding to the number of said adder means;
- a plurality of accumulator means for accumulating the output signals of said adder means from said signal start addresses in dependence on said signal increment values, so as to generate demultiplexed video signals;
- and
- combiner means for combining the demultiplexed signals so to generate said video signal.
3 more elements
Dependencies are inferred from the claim text.