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:
Apr. 26, 1994
Filed:
Dec. 27, 1991
Applicant:
Inventor:
Kazuo Saito, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358400 ; 379100 ;
Abstract
In a public telephone circuit using DCME and DSI, an apparatus with high line efficiency is obtained by demodulating the facsimile signal and transmitting the signal after converting it to a low transmission rate signal. An apparatus of the present invention connected to the exchanger at the trunk side input port comprises bearer interfaces connected to the DCME, FAX modems (3), a multiplexer (4) and a FAX modem discriminator (11). The apparatus demodulates the facsimile signal received from the trunk side input port and transmits the demodulated signal through the transmission line having 64 kbit/s on-demand clear channel under the CCITT recommendation Q. 50.