Voltage controlled oscillator

Details Voltage controlled oscillator Voltage controlled oscillator

1977-12-16

1979-08-14

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 93, 331111, 331153, H04N 322

Patent

active

041647599

ABSTRACT:
A voltage controlled oscillator having a substantially linear output over a wide range is used in video games to address picture memory means to thereby determine the size of the objects displayed on a raster type video screen. The oscillator produces an output signal having a frequency determined by an analog input voltage which is proportional to the desired size of the objects. The oscillator includes a variable current source controlled by the analog input voltage which stores charge in a capacitor. A pair of AND gates sink charge from the capacitor as determined by threshold means which senses the stored voltage. The periodic change in the output of the threshold means constitutes the output signal.

REFERENCES:
patent: RE28598 (1975-10-01), Baer et al.
patent: 3924202 (1975-12-01), Craft
patent: 4002824 (1977-01-01), Petrocelli

Affiliated with

Also associated with

Rating

Voltage controlled oscillator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Voltage controlled oscillator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage controlled oscillator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1378515