Digital oscillator

Details Digital oscillator Digital oscillator

1992-04-29

1993-03-30

Sikes, William L.

Oscillators

Relaxation oscillators

328 27, 328 55, 328160, 328 60, 331 60, 307512, G06F 1534

Patent

active

051987791

ABSTRACT:
A digital oscillator generates pairs of sampled sinusoidal signals having precisely established phase relationships, e.g., in near-perfect quadrature. The digital oscillator has first and second, interconnected multiplying-integrating modules. Each module has a multiplier for multiplying an input signal by a first coefficient, and a digital integrator for integrating the product over a period of time and thereby generating a different one of the sampled sinusoidal signals. Setting the multiplier coefficients appropriately controls the amplitudes of the generated sinusoidal signals. Likewise, the frequencies and phases of the sinusoidal signals are controlled in response to the values of the multiplier coefficients and to the period of integration. In a preferred embodiment, the first module has a delay-free-forward-path ("DFEP") integrator, and the second module uses a delay-forward-path ("DFP") integrator. In the DFFP integrator, the forward path from input to output within the integrator is substantially delay-free, and a device provides a delay in a feedback path between the integrator input and output. In a DFP integrator, on the other hand, a device provides a delay in the forward path, and the feedback path is substantially delay-free. Other versions of the invention provide two pairs of quadrature-related sampled sinusoidal signals.

REFERENCES:
patent: 3582625 (1971-06-01), Rouxel
patent: 3649821 (1972-03-01), Gumacos
patent: 4159526 (1979-06-01), Mosley, Jr. et al.
patent: 4285044 (1981-08-01), Thomas et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1283837