Controlled oscillator

Details Controlled oscillator Controlled oscillator

1975-11-19

1977-04-26

Richardson, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

331 8, H04N 946

Patent

active

040205002

ABSTRACT:
A controlled oscillator suitable for construction largely in integrated circuit form includes an oscillating amplifier stage and a regenerative feedback loop including a resonant frequency determining element coupled to the amplifier stage for providing an oscillatory reference signal. A phase shift network is provided outside the loop for shifting the phase of the oscillatory signal a predetermined amount. A control circuit which is supplied with the phase shifted oscillatory signal to produce anti-phase signal outputs is responsive to control signal representative of the phase and/or frequency of a predetermined reference signal for selecting portions of the anti-phase output signals. A combining network sums the oscillatory signal and the selected portions from the control circuit to produce a combined signal with a resultant phase which is supplied to the oscillating amplifier stage for maintaining the oscillatory signal in desired relation with the reference signal.

REFERENCES:
patent: 3743764 (1973-07-01), Wittmann

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2090894