Method for updating vehicle ECUs using differential update packages

• US 9,836,300 B2
• Filed: 06/16/2015
• Issued: 12/05/2017
• Est. Priority Date: 06/16/2015
• Status: Active Grant

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Moeller, Douglas S, Pashby, Ronald W, Holmes, Courtney Joe
• Primary Examiner(s): MILLER, VIVA L
• Application Number:
  US14/740,458
• Publication Number:
  US 20160371076A1
• Time in Patent Office: 903 Days
• CPC Class Codes: G06F 8/654 using techniques specially adapted for alterable solid state memories, e.g. for EEPROM or flash memories
• CPC Class Codes: G06F 8/658 Incremental updates; Differential updates
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 67/34 involving the movement of software or configuration parameters network booting or remote initial program loading [RIPL] G06F9/4416

Abstract

A method for upgrading vehicle electronic control units (ECUs) in a vehicle comprises: creating a differential upgrade package (DUP) for each upgrade to a predetermined ECU, said creating comprises: comparing a new image of the digital contents of a predetermined ECU flash memory with a present image of the digital contents of the predetermined ECU flash memory; and producing a set of changes to modify the present image to the new image, said changes comprising a set of instructions. The DUP comprises a set of instructions that are utilized to update the ECU flash memory a block at a time.

Claims

1. A method for upgrading vehicle electronic control units (ECUs) in a vehicle, each ECU comprising a flash memory, each ECU disposed in a vehicle comprising a telematics control unit (TCU) that is operable to communicate to said ECUs, said method comprising:

creating a differential upgrade package (DUP) for each upgrade to a predetermined ECU, said creating comprises;

comparing a new desired image of the digital contents of said predetermined ECU flash memory with an existing present image of the digital contents of said predetermined ECU flash memory said existing present image comprises a plurality of blocks of bytes; and

producing a set of changes to modify said present image to said new image, one block of bytes at a time, said changes comprising a set of instructions;

said set of instructions comprises (1) an instruction to copy one block of bytes at a time of said plurality of blocks of bytes from said predetermined ECU flash memory, (2) an instruction perform one or both of applying a set of modifications to said one block of bytes and adding additional bytes to said one block of bytes to generate one block of bytes of said new image, (3) an instruction to erase said one block from said predetermined flash memory, and (4) an instruction to copy said one block of bytes of said new image into said predetermined ECU flash memory in place of said copied block of bytes from said predetermined ECU flash memory;

downloading said DUP to one or more vehicles comprising a telematics control unit (TCU) via a wireless network;

utilizing said telematics control unit to automatically respond to receipt of said DUP to said predetermined ECU to update said predetermined ECU flash memory one block of bytes at a time;

generating an update status report for said DUP update of said predetermined ECU flash memory; and

utilizing filtering criteria to filter said update status report to generate a filtered data stream.

2. A method in accordance with claim 1, comprising:

utilizing a distributed network to download said DUP to a plurality of vehicles to provide concurrent updating of said predetermined ECU in each said plurality of vehicles.

3. A method in accordance with claim 1, comprising:

providing a client server;

uploading said DUP to said client server; and

coupling said client server to a distributed network to download said DUP to a plurality of vehicles, each comprising said predetermined ECU.

4. A method in accordance with claim 3, comprising:

utilizing an administrative server coupled to a plurality of communication servers for said distributed network.

5. A method in accordance with claim 1, comprising:

providing a distributed network comprising an arbitration server and a plurality of communication servers;

uploading said DUP to said communication servers via said arbitration server; and

downloading said DUP concurrently from said plurality of communication servers to a plurality of vehicles.

6. A method in accordance with claim 5, comprising:

providing a client server; and

uploading said DUP from said client server to said arbitration server.

7. A method for real-time monitoring of widely distributed software updates of vehicle electronic control units (ECUs), each ECU comprising a flash memory, each ECU disposed in one vehicle of a plurality of vehicles, each vehicle comprising a telematics control unit (TCU) that is operable to communicate to said ECUs, said method comprising:

creating a digital upgrade package (DUP) for each upgrade to a predetermined ECU in each vehicle of said plurality of vehicles, said creating comprises;

comparing a new image of the digital contents of said predetermined ECU flash memory with a present image of the digital contents of said predetermined ECU flash memory, said present image comprising a plurality of blocks of bytes;

producing a set of changes to modify said present image to said new image on a block of bytes by block of bytes basis, said changes comprising a set of instructions;

said set of instructions comprises (1) an instruction to copy one block of bytes of said plurality of blocks of bytes at a time from said predetermined ECU flash memory, (2) an instruction perform one or both of applying a set of modifications to said one block of bytes and adding additional bytes to said one block of bytes to generate a block of bytes of said new image, (3) an instruction to erase said one block from said predetermined ECU flash memory, and (4) an instruction to copy said block of bytes of said new image into said predetermined ECU flash memory in place of said copied one block of bytes from said predetermined ECU flash memory;

downloading said DUP to said plurality of vehicles via a wireless distributed network;

utilizing each said telematics control unit to automatically respond to receipt of said DUP to update a corresponding said predetermined ECU flash memory;

utilizing each said telematics control unit to automatically generate an update status report for said DUP update of said corresponding said predetermined ECU flash memory;

operating each said telematics control unit to automatically upload said status report to said wireless distributed network; and

utilizing data stream filtering criteria in said wireless distributed network to filter said update status report to generate a corresponding filtered data stream.

8. A method in accordance with claim 7, comprising:

providing said wireless distributed network with a plurality of communication servers, each of said communication servers operable to communicate with a corresponding subset of said plurality of vehicles; and

providing said wireless distributed network with an arbitration server operable to communicate with said plurality of communication servers.

9. A method in accordance with claim 8, comprising:

operating each communication server of said plurality of communication servers to receive said update status report from each vehicle of said corresponding subset of said plurality of vehicles;

operating each said communication server of said plurality of communication servers to combine said update status reports into a corresponding data stream.

10. A method in accordance with claim 9, comprising:

providing each communication server of said plurality of communication servers with data stream filtering criteria to filter said update status reports to produce a filtered data stream.

11. A method in accordance with claim 10, comprising:

uploading said data stream filtering criteria to said arbitration server from a client.

12. A method in accordance with claim 10, comprising:

providing each said communication server of said plurality of communication servers with formatting data to format said filtered data stream.

13. A method in accordance with claim 12, comprising:

uploading said data stream filtering criteria to said arbitration server from a client.

14. A method in accordance with claim 9, comprising:

providing said arbitration server with said data stream filtering criteria to filter said update status reports to produce a filtered data stream;

establishing communication links with selected communication servers of said plurality of communication servers for which said data stream filtering is applicable;

uploading said data stream filtering criteria to said selected communication servers; and

utilizing said data stream filtering criteria at each of said selected communication servers to filter said update status reports to generate a corresponding data stream for each said of said selected communication servers.

15. A method in accordance with claim 14, comprising:

downloading each said corresponding data stream to said arbitration server.

16. A method in accordance with claim 15, comprising:

operating said arbitration server to combine all of said corresponding filtered data streams into a single data stream.

17. A method in accordance with claim 16, comprising:

downloading said single data stream to said client.

18. A method in accordance with claim 16, comprising:

providing said arbitration server with formatting criteria; and

utilizing said arbitration server to apply said formatting criteria to said single data stream to provide a formatted data stream.

19. A method in accordance with claim 18, comprising:

downloading said formatted data stream to said client.

20. A method in accordance with claim 19, comprising:

providing said formatting criteria to said arbitration server from said client.

21. A method for real-time monitoring of widely distributed software updates of vehicle electronic control units (ECUs), each ECU comprising a flash memory comprising a plurality of blocks of data, each ECU disposed in one vehicle of a plurality of vehicles, each vehicle comprising a telematics control unit (TCU) that is operable to communicate to said ECUs, said method comprising:

creating a digital upgrade package (DUP) for each upgrade to a predetermined ECU in each vehicle of said plurality of vehicles;

downloading said DUP to said plurality of vehicles via a wireless distributed network;

utilizing each said telematics control unit to automatically respond to receipt of said DUP to update a corresponding said predetermined ECU flash memory by updating said ECU flash memory on a block of data by block of data basis;

said updating comprising (1) copying one block of bytes of said plurality of blocks of bytes at a time from said predetermined ECU, (2) performing one or both of applying a set of modifications to said one block of bytes and adding additional bytes to said one block of bytes to generate a block of bytes of said new image, (3) erasing said one block from said predetermined ECU, and (4) copying said block of bytes of said new image into said predetermined ECU flash memory in place of said copied one block of bytes from said predetermined ECU;

utilizing each said telematics control unit to automatically generate an update status report for each said DUP update of said corresponding said predetermined ECU flash memory;

operating each said telematics control unit to automatically upload said status report to said wireless distributed network; and

operating said wireless distribute network to generate a data stream comprising update status reports from said plurality of vehicles; and

utilizing data stream filtering criteria to filter said update status reports to generate a filtered data stream.

22. A method in accordance with claim 21, comprising:

providing said wireless distributed network with a plurality of communication servers, each of said communication servers operable to communicate with a corresponding subset plurality of vehicles of said plurality of vehicles; and

providing said wireless distributed network with an arbitration server operable to communicate with said plurality of communication servers.

23. A method in accordance with claim 22, comprising:

operating each communication server of said plurality of communication servers to receive said update status report from each vehicle of said corresponding subset plurality of vehicles of said plurality of vehicles; and

operating each said communication server of said plurality of communication servers to combine said update status reports into a corresponding.

24. A method in accordance with claim 23, comprising:

providing each communication server of said plurality of communication servers with said data stream filtering criteria to filter said update status reports to produce said filtered data stream.

25. A method in accordance with claim 24, comprising:

uploading said data stream filtering criteria to said arbitration server from a client.

26. A method in accordance with claim 24, comprising:

providing each said communication server of said plurality of communication servers with formatting data to format said filtered data stream.

27. A method in accordance with claim 26, comprising:

uploading said data stream filtering criteria to said arbitration server from a client.

28. A method in accordance with claim 23, comprising:

providing said arbitration server with said data stream filtering criteria to filter said update status reports to produce a filtered data stream;

establishing communication links with selected communication servers of said plurality of communication servers for which said data stream filtering is applicable;

uploading said data stream filtering criteria to said selected communication servers; and

utilizing said data stream filtering criteria at each of said selected communication servers to filter said update status reports to generate a corresponding data stream for each said of said selected communication servers.

29. A method in accordance with claim 23, comprising:

downloading each said corresponding data stream to said arbitration server.

30. A method in accordance with claim 29, comprising:

operating said arbitration server to combine all of said corresponding filtered data streams into a single data stream.

31. A method in accordance with claim 30, comprising:

downloading said single data stream to said client.

32. A method in accordance with claim 30, comprising:

providing said arbitration server with formatting criteria; and

utilizing said arbitration server to apply said formatting criteria to said single data stream to provide a formatted data stream.

33. A method in accordance with claim 32, comprising:

downloading said formatted data stream to said client.

34. A method in accordance with claim 33, comprising:

providing said formatting criteria to said arbitration server from said client.

35. A method in accordance with claim 21, comprising:

uploading said DUP to said distributed network from a client.

36. A method in accordance with claim 35, comprising:

uploading said data filtering criteria to said distributed network from said client;

generating a data stream of said status reports; and

utilizing said data filtering criteria to generate a filtered data stream.

37. A method in accordance with claim 36, comprising:

downloading said filtered data stream from said distributed network to said client.

38. A method in accordance with claim 37, comprising:

uploading formatting criteria to said distributed network from said client; and

utilizing said formatting criteria to format said filtered data stream.