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:
May. 29, 2001
Filed:
Jul. 31, 1997
Kenneth B. Riordan, Spring Grove, IL (US);
Neil Peplinski, Schaumburg, IL (US);
David J. Anderson, Elgin, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A receiver (,) corrects for dynamic DC offsets by utilizing an open loop predictive DC offset correction stage (,) to respond instantly to changes in AGC settings on a timeslot by timeslot basis. The receiver has an AC coupled baseband receiver and has memory (,) for storing calibration offset data (,and,) representing a calibration offset voltage value for each automatic gain control (AGC) state determined relative to a known reference value. The predictive DC offset stage (,) predicts a predictive DC offset correction value (,and,) for a selected timeslot using stored calibration offset data (,and,) and an average of stored calibration offset data corresponding to AGC states for all timeslots in a given frame.