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:
Jun. 20, 1995
Filed:
Jul. 08, 1993
Shunichi Fujise, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A communication terminal having an interface to which its components including an analog telephone are connected and which enables communication with another terminal at the other end of a line of the integrated services digital network. A first tone is generated to set the period of time for dialing of the analog telephone, a second tone different from the first tone is generated to set the period of time for connection between the analog telephone and the terminal at the other according to the dialing during the period of time when the first tone is being generated, and a third tone different from the first and second tones is generated to set the period of time for terminating communication using the analog telephone when the connection established during the period of time when the second tone is being generated is cancelled. Each of first, second and third tones generated is output to the analog telephone.