Method and device for waking users of a bus system, and corresponding users

• US 20040145500A1
• Filed: 12/29/2003
• Published: 07/29/2004
• Est. Priority Date: 12/30/2002
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Huebl, Jochen
• Granted Patent: US 7,890,229 B2
• Time in Patent Office: Days
• US Class Current: 340/994
• CPC Class Codes: G05B 2219/25286 Switch on power, awake controlled machine from standby if command signal
• CPC Class Codes: H04L 12/40039 Details regarding the setting of the power status of a node according to activity on the bus
• CPC Class Codes: H04L 2012/40215 Controller Area Network CAN
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle

Abstract

A device for waking users of a bus system, wherein a detection means, in particular a counter, is provided, which detects at least one predefined signal feature of the signals transmitted on the bus system and initiates the further wake-up procedure once a predefinable number with respect to the signal feature has been reached.

Claims

1. A device for waking up users of a bus system, comprising:

a detection device for detecting at least one predefined signal feature of signals transmitted on the bus system and for initiating a further wake-up procedure once a preselected number with respect to the signal feature has been reached.

2. The device according to claim 1, wherein the detection device includes a counter.

3. The device according to claim 1, wherein the at least one signal feature includes at least one of an edge and an edge change of a signal.

4. The device according to claim 1, wherein the at least one signal feature includes at least one of a signal level and a preselected combination of a plurality of signal levels.

5. A user of a bus system comprising:

a detection device for detecting at least one predefined signal feature of signals transmitted on the bus system and for initiating a further wake-up procedure once a preselected number with respect to the signal feature has been reached.

6. The user according to claim 5, wherein the detection device includes a counter.

7. A method for waking up users of a bus system, the method comprising:

detecting at least one preselected signal feature of signals transmitted on the bus system; and

initiating a further wake-up procedure once a predefined number with respect to the signal feature has been reached.

8. The method according to claim 7, further comprising transmitting any message and evaluating the message as a wake-up message in that a corresponding signal feature is detected and evaluated from the message.

9. The method according to claim 7, further comprising determining a time duration when the signal feature occurs for a first time.

10. The method according to claim 7, wherein binary information results from a time duration following a first occurrence of the signal feature.

11. The method according to claim 7, further comprising transmitting a message and evaluating the message as a wake-up message, retransmitting the message following an initiation of the further wake-up procedure, and determining therefrom which users or user groups are to be selectively awakened fully.