Digitally controllable oscillator

Details Digitally controllable oscillator Digitally controllable oscillator

2006-07-25

2006-07-25

Lockett, Kimberly (Department: 2837)

Music

Instruments

Electrical musical tone generation

Reexamination Certificate

active

07081583

ABSTRACT:
A digitally controllable oscillator includes an oscillation generation means and an oscillator control, wherein the oscillator control comprises two digital/analog converters whose output signals are combined by a combiner in order to generate an analog input signal into the oscillation generation means. The second digital/analog converter is implemented in order to provide, in response to a digital increment in its digital input signal, a difference in the output signal of the second digital/analog converter which is smaller than a difference in the output signal of the first digital/analog converter when the first digital/analog converter is pulsed with the digital increment in its digital input signal.

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patent: 0 402 113 (1990-12-01), None
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Hwang, In-Chul et al.; “A Digitally Controlled Phase-Locked Loop With a Digital Phase-Frequency Detector for Fast Acquisition”; IEEE Journal of Solid-Sate Circuits, vol. 36, No. 10, Oct. 2001, pp. 1574-1581.
Xu, Xiaofeng et al.; The Implementation of Dual-Truncation ΣΔ D/A Converters; Circuits and Systems, 1992.; ISCAS '92.; Proceedings., 1992 IEEE International Symposium in San Diego, CA, US, May 10-13, 1992, vol. 2, pp. 597-600.

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