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:
May. 11, 1999
Filed:
Apr. 03, 1997
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370218 ; 370220 ; 370419 ;
Abstract
A packet handler includes an interface circuit of an ATM handler corresponding in one-to-one relation to each input/output port of an ATM switch. A switch interface including a disconnection circuit and a distribution circuit controls the cell flow from each interface circuit to a corresponding input port and the cell from the output ports of the ATM switch to each interface circuit. In a set of interface circuits, one redundant transmission path can be replaced arbitrarily with two nonredundant independent transmission paths. The ATM communication system can thus accommodate redundant transmission paths and nonredundant transmission paths in an arbitrary ratio.