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:
Mar. 13, 1979
Filed:
Jan. 23, 1978
David C Nicholas, Cedar Rapids, IA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
The method of and apparatus for synchronizing all local oscillators in a multinode communication system is disclosed wherein each local oscillator is synchronized to the average frequency of some or all incoming signals from neighboring nodes. This is accomplished by detecting the difference in frequency between the local oscillator and the frequency of incoming signals, averaging these differences, and using the average to adjust the local oscillator. The frequency difference is measured over a period of time and the accumulated difference over the period is checked for reasonableness prior to use. Its use is further delayed after the period of measurement by a period of time while the incoming link is monitored for signal problems which might have occurred toward the end of the accumulation period and which therefore would not have been detected by an immediate reasonableness check.