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. 07, 1999
Filed:
Oct. 10, 1996
Applicant:
Inventor:
John Little, South Woodham Ferrers, GB;
Assignee:
Gec-Marconi Limited, , GB;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
370324 ; 455431 ; 379343 ;
Abstract
A terrestrial flight telephone system comprises a number of air stations which communicate on a common frequency with a ground station. The ground station can handle calls from a number of air stations in respective slots of sequential frames defined by the ground station. Accurate synchronisation is critical to the functioning of the system and drift in an oscillator of the air station, which controls the timing of transmissions from the air station, is corrected by signals received from the ground station.