Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus access regulation
Reexamination Certificate
2005-01-18
2005-01-18
Dang, Knanh (Department: 2112)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus access regulation
C710S305000, C713S400000
Reexamination Certificate
active
06845416
ABSTRACT:
A system for interfacing a host computer to a Controller Area Network (CAN) bus. The system comprises a memory, an embedded processor and interface logic. The memory stores program code. The embedded processor couples to the memory and executes the program code. The interface logic interfaces the embedded processor with an interconnecting bus, e.g., the Real-Time System Integration (RTSI) bus. In response to execution of the program code, the embedded processor is operable to perform a CAN event in response to the interface logic receiving a RTSI trigger signal on a selected line of the RTSI bus. A peripheral device also coupled to the host computer assert the trigger signal in response to the peripheral device receiving and/or transmitting data. Furthermore, the interface logic is configured to assert a RTSI trigger signal on a selected line of said RTSI bus in response to the embedded processor performing a CAN event. CAN events include transmission/reception of a CAN frame. The peripheral device may be configured to perform a data transfer in response to receiving the trigger signal.
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Chasmawala Zaki
Cummings Rodney W.
Edwards James W.
Pitts William R.
Dang Knanh
Hood Jeffrey C.
Knoll Clifford
Meyertons Hood Kivlin Kowert & Goetzel P.C.
National Instruments Corporation
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