Protocol selection matrix for in-vehicle networks
First Claim
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1. A protocol selection matrix adapter for interfacing a host computer to multiple in-vehicle networks on a vehicle through a plurality of protocols, said adapter comprising:
- a protocol central processing unit (CPU) circuit, said CPU circuit providing vehicle network protocol interactions, low level filtering of incoming messages, data and communications transfer to the host computer, time stamping and broadcast functionality operations;
a universal asynchronous receiver transmitter (UART) decoder circuit for decoding UART protocols; and
a plurality of transceiver circuits, said transceiver circuits providing a protocol interface between the vehicle and the host computer, wherein the adapter is capable of providing simultaneous support of at least two vehicle protocols.
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Abstract
A protocol selection matrix adapter that interfaces a host computer to multiple in-vehicle networks. The protocol selection matrix adapter is microprocessor controlled and provides a physical interface to the in-vehicle networks. Further, the control of the protocol selection matrix adapter automatically selects the in-vehicle networks, and the initiation of communications on the detected networks. The protocol selection matrix adapter also is able to reprogram an electronic control unit (ECU) that makes up the in-vehicle network.
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Citations
20 Claims
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1. A protocol selection matrix adapter for interfacing a host computer to multiple in-vehicle networks on a vehicle through a plurality of protocols, said adapter comprising:
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a protocol central processing unit (CPU) circuit, said CPU circuit providing vehicle network protocol interactions, low level filtering of incoming messages, data and communications transfer to the host computer, time stamping and broadcast functionality operations;
a universal asynchronous receiver transmitter (UART) decoder circuit for decoding UART protocols; and
a plurality of transceiver circuits, said transceiver circuits providing a protocol interface between the vehicle and the host computer, wherein the adapter is capable of providing simultaneous support of at least two vehicle protocols. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A protocol selection matrix adapter for interfacing a host computer to multiple in-vehicle networks on a vehicle through a plurality of protocols, said adapter comprising:
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a protocol central processing unit (CPU) circuit, said CPU circuit providing vehicle network protocol interactions, low level filtering of incoming messages, data and communications transfer to the host computer, time stamping and broadcast functionality operations;
a universal asynchronous receiver transmitter (UART) decoder circuit for decoding UART protocols; and
a plurality of transceivers, said transceivers providing a protocol interface between the vehicle and the host computer, wherein the adapter is capable of providing simultaneous support of at least two vehicle protocols, said plurality of transceivers including a controller area network (CAN) transceiver for providing a CAN protocol interface between the vehicle and the host computer, a standard corporate protocol (SCP) transceiver for providing a SOP protocol interface between the vehicle and the host computer, a UART based protocol (UBP) transceiver that is controlled by the UART decoder circuit, said UBP transceiver providing a UBP protocol interface between the vehicle and the host computer, a data communications link (DCL) transceiver that is controlled by the UART decoder circuit, said DCL transceiver providing a DCL protocol interface between the vehicle and the host computer, an ISO 9141 transceiver that is controlled by the UART decoder circuit and supports all ISO 9141 type protocols in key word-200, and a diagnostic data link (DDL) UART transceiver that is controlled by the UART decoder circuit, said DCL transceiver providing a DCL protocol interface between the vehicle and the host computer. - View Dependent Claims (19, 20)
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Specification