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. 27, 1995
Filed:
Dec. 06, 1993
Applicant:
Inventors:
Kaori Nakagawa, Kawasaki, JP;
Kouichi Matsumoto, Tokyo, JP;
Toru Fujino, Urawa, JP;
Muneki Nakao, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379100 ; 379 97 ;
Abstract
A facsimile apparatus sends a quasi-ring back tone to a destination in response to a call from the destination, and detects a CNG from the destination while the apparatus is periodically sending the quasi-ring back tone to the destination. When the apparatus detects a CNG for the first time, the apparatus stops sending the quasi-ring back tone and then performs facsimile communication in response to a second detection of a CNG from the destination, so as to certainly detect the CNG and to quickly shift to facsimile communication.