Multiplex communications – Pathfinding or routing – Through a circuit switch
Reexamination Certificate
2007-11-20
2007-11-20
Pezzlo, John (Department: 2616)
Multiplex communications
Pathfinding or routing
Through a circuit switch
C370S225000, C370S244000, C370S461000
Reexamination Certificate
active
10378403
ABSTRACT:
A system and method are provided for communicating control information in a switch fabric. The method comprises: on a switch card, establishing a plurality of crossbars controlled by an arbiter; initiating a control message; and, distributing the control message on a switch card token bus connecting the crossbars and arbiter elements. Distributing the control message on a switch card token bus connecting the crossbar and arbiter elements includes daisy-chain connecting the elements with a cyclical bus. In some aspects of the method, establishing a plurality of crossbars controlled by an arbiter includes identifying each element with a unique address. Then, initiating a control message includes initiating a control message with an attached address. Distributing the control message on a switch card token bus includes the substeps of: daisy-chain passing the control message between elements; and, terminating the message at an element having an address matching the address attached to the control message.
REFERENCES:
patent: 5781745 (1998-07-01), Ramelson et al.
patent: 6343081 (2002-01-01), Blanc et al.
patent: 2004/0030859 (2004-02-01), Doerr et al.
Clovis Philip Michael
Holzer Peter John
Huber John David
Leung John Calvin
Miller Kirk Alvin
Applied Micro Circuits Corporation
Law Office of Gerald Maliszewski
Maliszewski Gerald
Pezzlo John
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