Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1997-01-27
1998-07-21
Bayerl, Raymond J.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
345156, 345162, G09G 508
Patent
active
057840512
ABSTRACT:
A digital power management system for an analog-to-digital converter operates to cause the sample rate of the analog-to-digital converter to function at an original desired frequency so long as changing input signals are present. Whenever activity at the input of the analog-to-digital converter ceases to change, the system automatically decreases the clock signal sampling rate to a slower clock frequency, or shuts down the application of clock signals. This conserves power until a change in the analog input is detected, whereupon the system automatically increases the sample clock frequency back to the original frequency.
REFERENCES:
patent: 4217642 (1980-08-01), Dam et al.
patent: 4296407 (1981-10-01), Minakuchi
patent: 4916440 (1990-04-01), Faeser et al.
Harrow Scott E.
Nalubola Rishi
Bayerl Raymond J.
Luu Matthew
Ptak LaValle D.
VLSI Technology Inc.
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