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. 23, 1996
Filed:
Apr. 12, 1994
Junji Nakamura, Fukuoka, JP;
Toshihiro Nishimura, Fukuoka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A visual communication is performed between a calling party and a called party through a plurality of channels. After the parties are connected through a first channel, an available telephone number of a second channel stored in a BAS control portion is read to a TNI control portion on each of the parties, and the TNI control portions of the parties exchange the available telephone numbers. Thereafter, when an incoming call having a telephone number is received through the second channel by a call control processing portion of the called party, the telephone number of the call is compared with the available telephone number of the second channel by an ICJ portion. To perform correct visual communication between parties, in cases where the telephone number of the call agrees with the available telephone number, the call is established by the call control processing portion, and image and audio signals are transmitted from the calling party to the called party through codec portions, multiplexing/demultiplexing portions and the first and second channels to perform a visual communication. In contrast, in cases where the telephone number of the call does not agree with the available telephone number, the second channel is released.