System and method for controlling a communication bus

Details System and method for controlling a communication bus System and method for controlling a communication bus

2006-03-21

2006-03-21

Huynh, Kim (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output command process

C710S020000, C710S021000, C712S032000, C712S214000, C712S225000

Reexamination Certificate

active

07016983

ABSTRACT:
A method for controlling communication. The method sends a first instruction from a first processor to a first device via a processor bus in electrical communication with a first bus, sends a control signal from the first processor to a selector, the selector switching electrical communication at least one signal line of the processor bus from the first bus to a second bus, sends a second instruction from the first processor to a second device, sends a control signal from the first processor to the selector, the selector switching electrical communication of the at least one signal line of the processor bus from the second bus to the first bus, and sends data from the first device to the first processor. In another aspect, the first processor may transmit the control signal to the selector after comparing a threshold value with a status signal indicating an amount of data stored in the buffer connected to the second processor, the status signal sent from the second processor to the first processor via a status bus.

REFERENCES:
patent: 5892983 (1999-04-01), Tozaki et al.
patent: 5953513 (1999-09-01), Saiki et al.
patent: 6754439 (2004-06-01), Hensley et al.
patent: 6763429 (2004-07-01), Hirayama
patent: 6807363 (2004-10-01), Abiko et al.

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