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:
Nov. 16, 2004
Filed:
Dec. 28, 2001
Alain Benayoun, Cagnes sur Mer, FR;
Patrick Michel, La Gaude, FR;
Gilles Toubol, Villeneuve Loubet, FR;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Data transmission system comprising a plurality of Local Area Networks (LANs)( - to - ) interconnected by a hub ( ) including the same plurality of LAN adapters ( - to - ) respectively connected to the LANs and a packet switch ( ) comprising at least a packet switch module interconnecting all LAN adapters wherein a packet transmitted by any adapter to the packet switch includes a header containing at least the address of the adapter to which the packet is forwarded. At each cross point is located a memory block for storing any data packet received from the input port corresponding to the cross point and which is to be forwarded to the output port corresponding to the cross point. The system comprises a memory control circuit associated with each memory block within the packet switch for detecting an overflow, a regulating circuit for preventing a further data packet from being stored in the memory block which overflows in response to the memory control block, and an overflow bus for carrying the data packet to another memory block which does not overflow and corresponding to the same output port as the memory block which overflows.