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. 31, 2005
Filed:
Dec. 11, 2000
Bart Gerard Pauwels, Tessenderlo, BE;
Bart Gerard Pauwels, Tessenderlo, BE;
Alcatel, Paris, FR;
Abstract
For checking transfer of data cells in an asynchronous switching arrangement, cells are cyclically marked and counted before entering and after leaving the arrangement. A periodical time frame composed of N interleaved checking cycles is imposed. Each cycle (C) includes two phases, a first phase (IC) for marking and counting the cells, when received and before switching, and a second counting phase (OC) for counting cells after switching. An identification mark is introduced in every cell received during the first phase of every cycle, it is linked to the position of this cycle in the time frame. Cells marked according to a cycle are counted as soon as switched during the second phase of the cycle, which starts with a determined delay (d) during each first phase, for a determined duration (t). A determination of the correspondence between the two counts obtained during a cycle is made and induces a fault signaling as soon as such a correspondence as otherwise determined is not obtained.