Real-time parameter adjustment of digitally synthesized video te

Details Real-time parameter adjustment of digitally synthesized video te Real-time parameter adjustment of digitally synthesized video te

1996-01-22

1998-07-14

Peng, John K.

Television

Monitoring, testing, or measuring

Test signal generator

H04N 1702

Patent

active

057812314

ABSTRACT:
A digital test signal generator that provides for real-time parameter adjustment of digitally synthesized video test signals has a pair of test signal memories coupled one at a time via address and data multiplexers to a test signal synthesizer. Also coupled to the pair of test signal memories via the address and data multiplexers is a processor. The processor is coupled to one memory while the test signal synthesizer is coupled to the other. When a user changes a parameter at a front panel, the processor loads the one memory with new data representing the selected video test signal as modified by the parameter change. The processor than toggles the address and data multiplexers so that the one memory is coupled to the test signal synthesizer to generate the modified video test signal according to the changed parameter while the other memory is coupled to the processor ready to be loaded with data according to a next parameter change.

REFERENCES:
patent: 4635096 (1987-01-01), Morgan
patent: 4974080 (1990-11-01), Fritchie et al.
patent: 5136368 (1992-08-01), Fairburst

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