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:
Dec. 11, 1990
Filed:
Jul. 10, 1989
Akira Noguchi, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A packet switching system for a distributed processing ISDN (Integrated Services Digital Network) has terminal line control units, trunk line control units, data packet assembly/disassembly control units, voice packet assembly/disassembly control units, a call processing control unit, and an internal bus device for allowing data or voice to be transferred among the various control units. The data packet and voice packet assembly/disassembly control units are shared by all of the control units. The internal bus device is implemented as a packet bus for transferring packetized data or voice, a message bus for transferring non-packetized data or voice, and a call processing bus for transferring call processing data.