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:
Oct. 12, 2004
Filed:
Apr. 09, 2003
John G. Kenney, Princeton Junction, NJ (US);
Lawrence DeVito, Tewksbury, MA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A frequency acquisition system for a tunable oscillator is provided that generally includes a frequency-locked loop circuit including a detector system, responsive to the frequency of an output signal of a tunable oscillator and the frequency of a reference signal, to provide a digital output signal representative of a difference in frequency between the output signal and the reference signal, a register circuit for storing a value representative of the present control state of the tunable oscillator; and an accumulator circuit responsive to a value representative of the present control state of the tunable oscillator and to the digital output signal for providing an updated value for adjusting the frequency of the tunable oscillator towards the frequency of the reference signal.