SYSTEM FOR MANAGING WAKEUP AND SLEEP EVENTS OF COMPUTERS CONNECTED TO A MOTOR VEHICLE CAN NETWORK

• US 20120030330A1
• Filed: 10/22/2009
• Published: 02/02/2012
• Est. Priority Date: 12/18/2008
• Status: Active Grant

• Current Assignee: Renault Sas (Renault)
• Original Assignee: Renault Sas (Renault)
• Inventors: Rocher, Jean-Michel, Stineau, Jean-Yves
• Granted Patent: US 9,021,075 B2
• Time in Patent Office: Days
• US Class Current: 709/223
• 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 system for managing wakeup and sleep events of computers connected to a motor vehicle secondary CAN network, the secondary CAN network being connected to a main CAN network by a gateway. The system includes a master computer connected to the main CAN network and configured to manage the wakeup and sleep events of the computers through the exchange therewith of wakeup and sleep frames via the gateway. The gateway can: synthesize a single wakeup and sleep frame based on plural wakeup and sleep frames emitted by the computers, and emit the single frame to the master computer that is configured to interpret the frame.

Claims

1-3. -3. (canceled)

4. A system for managing wakeup and sleep events of computers connected to a motor vehicle secondary CAN network, the secondary CAN network being connected to a main CAN network by a gateway, the system comprising:

a master computer connected to the main CAN network and configured to manage the wakeup and sleep events of the computers by exchanging wakeup and sleep frames with the computers through the gateway,

wherein the gateway is configured to synthesize a single wakeup and sleep frame based on plural wakeup and sleep frames emitted by the computers and to emit the single frame to the master computer that is configured to interpret the frame.

5. The system as claimed in claim 4, wherein the master computer can emit a wakeup and sleep frame relating to plural secondary CAN network computers, and wherein the gateway can emit, according to the frame, a wakeup and sleep frame to each computer concerned.

6. The system as claimed in claim 4, wherein the gateway is further configured to implement a degraded sleep mode for computers connected to the main CAN network.

7. The system as claimed in claim 5, wherein the gateway is further configured to implement a degraded sleep mode for computers connected to the main CAN network.