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:
Jul. 02, 2002
Filed:
Oct. 07, 1999
Paul Vinel, Velizy, FR;
Pierre Parmentier, Saclay, FR;
Alcatel, Paris, FR;
Abstract
An ATM switching matrix has input ports, output ports and a passive optical core consisting of optical couplers. Each output port includes at least p optical receivers which are tuned to the same fixed wavelength which is specific to the output port. Each receiver has an input respectively connected to a port of one of the p couplers, a buffer having p inputs respectively connected to the outputs of the p receivers and an output connected to an output of the matrix. The matrix includes distributed allocation arrangements which control switching arrangements of each input port to connect, to k separate couplers, k respective input ports which at the time concerned are receiving k cells addressed to the same output port, k being less than or equal to p, and this operation being repeated for each output port.