Botond G Eross

20040225824, Nov 11, 2004

Apr 13, 2004

10/824072

Thomas Gafford - Redondo Beach CA, US
Botond Eross - Palo Alto CA, US
James Moorer - San Rafael CA, US

G06F013/36

710/314000

The technical field of the invention generally concerns digital computers and, in particular, repeaters or switches () for distributed arbitration digital data buses (and ) to which devices (and ) connect in parallel. The bus repeater/switch () includes a plurality of bus interface cards (48) that are connected to the distributed arbitration buses (and ) for receiving signals from and transmitting signals to devices (and ) connected thereto. The bus interface cards () connect to a control card () which allows signals from one of the sharing buses (or ) to be exchanged with the shared bus (). The bus switch () also includes selector switch (or ) for choosing which particular one of the sharing buses (or ) exchanges digital data signals with the shared bus (). The bus switch () responds to signals on the distributed arbitration buses (and ) and to phases of the protocol for those signals so that its presence between pairs of buses (--or -) is imperceptible to devices (and ) connected thereto.

20030120851, Jun 26, 2003

Sep 14, 2002

10/243537

Thomas Gafford - Redondo Beach CA, US
Botond Eross - Palo Alto CA, US
James Moorer - San Rafael CA, US

G06F013/36

710/306000

The technical field of the invention generally concerns digital computers and, in particular, repeaters or switches () for distributed arbitration digital data buses (and ) to which devices (and ) connect in parallel. The bus repeater/switch () includes a plurality of bus interface cards () that are connected to the distributed arbitration buses (and ) for receiving signals from and transmitting signals to devices (and ) connected thereto. The bus interface cards () connect to a control card () which allows signals from one of the sharing buses (or ) to be ex-changed with the shared bus (). The bus switch () also includes selector switch (or ) for choosing which particular one of the sharing buses (or ) exchanges digital data signals with the shared bus (). The bus switch () responds to signals on the distributed arbitration buses (and ) and to phases of the protocol for those signals so that its presence between pairs of buses (--or -) is imperceptible to devices (and ) connected thereto.