SECURITY SYSTEM FOR ELECTRONIC EQUIPMENT
First Claim
1. An electronic control unit (ECU) for a vehicle, the ECU comprising:
- transceiver circuitry to at least one of send and/or receive a message;
voltage measurement circuitry to determine at least one of a high bus line voltage (VCANH) value and/or a low bus line voltage (VCANL) value, for each zero bit of at least one zero bit of a received message, the received the message comprising a plurality of bits; and
feature set circuitry to determine a value of at least one feature of a feature set based, at least in part, on at least one of a high acknowledge (ACK) threshold voltage (VthH) and/or a low ACK threshold voltage (VthL), the feature set comprising at least one of an operating most frequently measured VCANH value (VfreqH2) of a number of VCANH values and/or an operating most frequently measured VCANL value (VfreqL2) of a number of VCANL values.
1 Assignment
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Accused Products
Abstract
One embodiment provides an electronic control unit (ECU) for a vehicle. The ECU includes transceiver circuitry, voltage measurement circuitry and feature set circuitry. The transceiver circuitry is to at least one of send and/or receive a message. The voltage measurement circuitry is to determine at least one of a high bus line voltage (VCANH) value and/or a low bus line voltage (VCANL) value, for each zero bit of at least one zero bit of a received message. The received the message includes a plurality of bits. The feature set circuitry is to determine a value of at least one feature of a feature set based, at least in part, on at least one of a high acknowledge (ACK) threshold voltage (VthH) and/or a low ACK threshold voltage (VthL). The feature set includes at least one of an operating most frequently measured VCANH value (VfreqH2) of a number of VCANH values and/or an operating most frequently measured VCANL value (VfreqL2) of a number of VCANL values.
27 Citations
22 Claims
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1. An electronic control unit (ECU) for a vehicle, the ECU comprising:
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transceiver circuitry to at least one of send and/or receive a message; voltage measurement circuitry to determine at least one of a high bus line voltage (VCANH) value and/or a low bus line voltage (VCANL) value, for each zero bit of at least one zero bit of a received message, the received the message comprising a plurality of bits; and feature set circuitry to determine a value of at least one feature of a feature set based, at least in part, on at least one of a high acknowledge (ACK) threshold voltage (VthH) and/or a low ACK threshold voltage (VthL), the feature set comprising at least one of an operating most frequently measured VCANH value (VfreqH2) of a number of VCANH values and/or an operating most frequently measured VCANL value (VfreqL2) of a number of VCANL values. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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at least one of sending and/or receiving, by transceiver circuitry of an electronic control unit (ECU) for a vehicle, a message; determining, by voltage measurement circuitry of the ECU, at least one of a high bus line voltage (VCANH) value and/or a low bus line voltage (VCANL) value, for each zero bit of at least one zero bit of a received message, the received the message comprising a plurality of bits; and determining, feature set circuitry of the ECU, a value of at least one feature of a feature set based, at least in part, on at least one of a high acknowledge (ACK) threshold voltage (VthH) and/or a low ACK threshold voltage (VthL), the feature set comprising at least one of an operating most frequently measured VCANH value (VfreqH2) of a number of VCANH values and/or an operating most frequently measured VCANL value (VfreqL2) of a number of VCANL values. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A vehicle system comprising:
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a plurality of electronic control units (ECUs); and a communication bus to couple the plurality of ECUs, each ECU comprising transceiver circuitry to at least one of send and/or receive a message, and at least one ECU comprising; voltage measurement circuitry to determine at least one of a high bus line voltage (VCANH) value and/or a low bus line voltage (VCANL) value, for each zero bit of at least one zero bit of a received message, the received the message comprising a plurality of bits; and feature set circuitry to determine a value of at least one feature of a feature set based, at least in part, on at least one of a high acknowledge (ACK) threshold voltage (VthH) and/or a low ACK threshold voltage (VthL), the feature set comprising at least one of an operating most frequently measured VCANH value (VfreqH2) of a number of VCANH values and/or an operating most frequently measured VCANL value (VfreqL2) of a number of VCANL values. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification