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. 25, 1995
Filed:
Apr. 05, 1994
Hideki Dake, Kawasaki, JP;
Masao Komatsu, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A communication terminal connected to a line of an exchange of a public network, includes a main body of the communication terminal, and a line branching detection controller coupled to the main body. The line branching detection controller includes a communication state detector enabling the communication terminal to call and receive a call when a communication operation of the communication terminal is detected, a line signal monitoring part activated when the communication state detector detects no communication operation and monitoring signals on the line connected to the exchange when activated, and an interference signal generator driven when the line signal monitoring part detects a signal indicating a communication made on the line and generating an interference signal on the line when driven.