Snap-on Inc.

Snap-on Technologies, Inc.

Ronald Lammers

Gert G Kok

A circuit for enabling communication between a micro-controller device and a number of data networks using different network protocols comprises a switch circuit and a number of interface circuits. The switch circuit is configured to connect input-output terminals of the data network to corresponding terminals of the interface circuits. The interface circuits are configured to convert the data formatted according to the network protocol of the data network to data formatted in accordance with the micro-controller device communication protocol.

Integrated universal input-output interface circuit

First and second networks, for example Controller Area Networks (CANs), of different physical layers are interfaced by applying signals of the busses of the two networks to respective transceivers. A dominant state of one of the busses is sensed and data is transferred between the two transceivers in a direction from the dominant bus. The two busses are interfaced by a logic circuit interposed between the transceivers. A control circuit is coupled to the first and second logic units for mutually exclusively activating and deactivating the first and second logic units to control the direction of data transfer between the busses.

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Hilversum, Netherlands

Ronald Lammers