The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2009
Filed:
May. 24, 2006
Dale H. Nelson, Macungie, PA (US);
Dale H. Nelson, Macungie, PA (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
A signal generator circuit having enhanced control resolution includes a variable frequency oscillator having a first control input adapted to receive a first signal and at least a second control input adapted to receive a second signal. The second signal is afforded a weight which is substantially equal to a weight of a least significant bit of the first signal. The variable frequency oscillator is operative to generate an output signal having a frequency which varies as a function of the first and second signals. The signal generator circuit further includes a first counter, a first divider and a modulation circuit. The first counter is configurable for generating an output count based at least in part on a difference between a third signal presented to the signal generator circuit and a fourth signal indicative of the output signal, the output count including the first signal. The first divider has a selectable divide value associated therewith and is configurable for receiving the output signal and for generating the fourth signal based on the divide value. The modulation circuit is adapted to receive at least a portion of the output count and the fourth signal and to generate the second signal as a function of the output count and the fourth signal.