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:
Jul. 08, 2003
Filed:
Feb. 22, 1999
Victor G. Mycynek, Des Plaines, IL (US);
Zenith Electronics Corporation, Lincolnshire, IL (US);
Abstract
A bandwidth stabilized PLL in an FPLL has an I channel including an I channel signal, having a pilot, and a Q channel signal. The DC offset, including the pilot, of the I channel signal is determined. The value of the pilot is found by subtracting the determined DC offset from the I channel signal. An error signal is developed from the known value of the transmitted pilot and the determined value of the pilot. The error signal is used to control a gain block for the Q channel for stabilizing the bandwidth of the PLL. Different embodiments are shown for controlling the gain of the PLL from both inside and outside of the PLL.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile