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. 28, 1999
Filed:
Oct. 22, 1998
Applicant:
Inventor:
Hiroyuki Hanazawa, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
370244 ; 370253 ; 370395 ;
Abstract
A component device (such as an input circuit interface device, a cell multiplexing device, a cell switching device, a cell demultiplexing device or output circuit interface device) in an ATM exchange counts an inflow cell number, a passage cell number and discard cell number. The firmware of the device subtract the passage cell number and the discard cell number from the inflow cell number to find a difference at predetermined interval. If the difference is larger than the predetermined threshold value, the firmware informs the software of fault warning.