Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Patent
1996-09-27
1999-09-21
Patel, Ajit
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
370395, 370429, H04L 1228
Patent
active
059563362
ABSTRACT:
A circuit and method is provided for implementing a content addressable memory circuit (100) in which an output word is produced which corresponds to the content of a reference word containing an ATM header. According to a first aspect, a binary search logic circuit (104) binarily searches the memory array (101) to find a match word whose content is equal to that of the reference word. Output signals indicate either that a match has been found or that the binary searching of the memory array (101) should continue at addresses either above or below the location address of the match word. According to a second aspect, the content addressable memory circuit (100) performs a concurrent search of switching identifiers, virtual circuit identifiers and virtual path identifiers, to determine if a virtual path connection or virtual circuit connection exists for an ATM header.
REFERENCES:
patent: 5414707 (1995-05-01), Johnston et al.
patent: 5422838 (1995-06-01), Lin
patent: 5467349 (1995-11-01), Huey et al.
patent: 5684954 (1997-11-01), Kaiserswerth et al.
Franklin Mark
Jones Kenneth Wade
Loschke Jon Ashor
Parks Charley Michael
Chastain Lee E.
Lee Chiho Andrew
Motorola Inc.
Patel Ajit
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