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:
Oct. 06, 1987
Filed:
Dec. 27, 1984
Applicant:
Inventors:
Takashi Hatano, Machida, JP;
Takashi Nara, Yokohama, JP;
Yutaka Kawato, Tokyo, JP;
Sumie Okada, Yokohama, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q / ;
U.S. Cl.
CPC ...
370 58 ; 370 84 ;
Abstract
A digital exchange system including exchange terminals, a digital network, and a bit rate conversion unit located therebetween. The bit rate conversion unit operates to match low bit-rate channel signals with high bit-rate channel signals acceptable by the digital network, by multiplexing a plurality of the outgoing low bit-rate channel signals. The bit-rate conversion unit operates, on the other hand, to demultiplex the incoming multiplexed low bit-rate channel signals.