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:
Nov. 07, 2000
Filed:
Oct. 06, 1998
Applicant:
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q / ; H04B / ;
U.S. Cl.
CPC ...
455427 ; 455527 ;
Abstract
A satellite communication system capable of notifying an user in speaking that a connection request is transmitted and capable of being implemented at low cost. A satellite communication system in accordance with the SCPC method using a voice activation is structured with a center station. The center station, when receiving a connection request to an user in speaking, measures a level of a carrier assigned to a reception line for the user with a demodulator. In this center station, when the level is not more than a predetermined level, the modulator transmits a signal notifying the user that the connection request is received.