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. 26, 1999
Filed:
Apr. 21, 1997
Ritsuko Ohkura, Kawasaki, JP;
Hideaki Mochizuki, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
An OEM processing device for supporting operations, administration, and maintenance (OAM) in an ATM network, whose control circuit has a simplified configuration that avoids duplexity of common functions, thus realizing reduced size and less power consumption. A VPI/VCI extractor extracts VPI/VCI from each incoming ATM cell, while an alarm detector detects a physical layer alarm. An entry data memory stores a plurality of VPIs/VCIs that have been previously registered. When the extracted VPI/VCI is found in the registered VPIs/VCIs in the entry data memory, a VPI/VCI coincidence signal will be generated. When a physical layer alarm is detected by the alarm detector, all the relevant VPIs related to the detected alarm will be generated by using the same entry data memory. A VP-AIS cell generator then produces VP-AIS cells corresponding to the generated VPIs and inserts them into the current ATM cell stream.