Method and device for waking users of a bus system, and corresponding users
AssigneeRobert Bosch GmbH
InventorJochen Huebl
Life of this patent
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Abstract
A device for waking up users of a bus system includes an evaluator having at least one clock-pulse generator and configured to selectively evaluate the wake-up information used to activate the users. The wake-up information to be evaluated has the structure of a standard CAN message. The activating procedure is initiated only in response to the presence of wake-up information that is specified for the respective user.
Claims25
A device for connecting a user station to a CAN bus, the user station being able to be activated by the device in response to receiving wake-up information, comprising:
- an evaluator including at least one clock-pulse generator and configured to selectively evaluate the wake-up information detected on the CAN bus;
- wherein the wake-up information to be evaluated has the structure of a standard CAN message, and wherein activation of a respective user station is initiated only in response to the presence of wake-up information detected on the CAN bus, wherein the wake-up information is one of specified or specifiable for the respective user station, and
- wherein the evaluation of the wake-up information includes an evaluation of at least one part of one of the data field or the data length code of one of messages present on the CAN bus or potential wake-up messages preselected from the messages present on the CAN bus.
A method for selectively activating user stations on a CAN bus in response to receiving wake-up information, the method comprising:
- evaluating, using an evaluator including at least one clock-pulse generator, the wake-up information detected on the CAN bus, wherein the wake-up information to be evaluated has the structure of a standard CAN message;
- and
- initiating activation of a respective user station only in response to the presence of wake-up information detected on the CAN bus, wherein the wake-up information is one of specified or specifiable for the respective user station;
- and
- wherein the evaluation of the wake-up information includes an evaluation of at least one part of one of the data field or the data length code of one of messages present on the CAN bus or potential wake-up messages preselected from the messages present on the CAN bus.
A user station connected to a CAN bus and configured to be activated by wake-up information transmitted on the CAN bus, comprising:
- an evaluator including at least one clock-pulse generator and configured to selectively evaluate the wake-up information detected on the CAN bus;
- wherein the wake-up information to be evaluated has the structure of a standard CAN message, and wherein activation of a respective user station is initiated only in response to the presence of wake-up information detected on the CAN bus, wherein the wake-up information is one of specified or specifiable for the respective user station, and
- wherein the evaluation of the wake-up information includes an evaluation of at least one part of one of the data field or the data length code of one of messages present on the CAN bus or potential wake-up messages preselected from the messages present on the CAN bus.
Dependencies are inferred from the claim text.