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:
Dec. 09, 1980
Filed:
Feb. 26, 1979
William H Mosley, St. Petersburg, FL (US);
Carl F Andren, Indiatlantic, FL (US);
Lex Scott, St. Petersburg, FL (US);
E-Systems, Inc., Dallas, TX (US);
Abstract
A phase lock loop (10) includes a frequency and phase preset network for presetting a local oscillator (20) in substantial synchronism with a carrier signal. The preset network utilizes time delayed output signals from split or double correlators (32, 34, 36, 38) to determine a change in the phase angle between the local oscillator signal and the carrier signal for a known time period to determine the frequency of the local oscillator signal relative to the carrier signal frequency. The preset network determines the phase of the local oscillator signal relative to the carrier signal phase utilizing the summed output of one split correlator (32 and 34) and of another split correlator (36 and 38).