Gm Global Technolgoy Operations, Inc.

Susanta P Sarkar

Ansaf Ibrahem Alrabady

John J Correia

Jonathan R Schwarz

James M Kortge

Thomas M P Catsburg

Jamison C Schroeder

Alan D Wist

Peter M Ansbro

James D Forsmark

Robert D Hoover

Technical solutions are described for updating a plurality of electronically controlled units (ECU) in a vehicle with multiple communication buses. An example method includes determining an installation order for updating the plurality of ECU based on a priority level assigned to each of the ECU, and a size of each update package for each of the ECU. The method also includes updating the ECU concurrently by installing the respective update packages according to the installation order.

Remote vehicle update installation scheduling

A method for adjusting a variable rate of requesting software data for a computer system onboard a vehicle is provided. The method determines a number of ignition cycles executed after first software data has been retrieved; and when the number of ignition cycles is greater than a threshold value, reduces a frequency for generating a software request, to obtain a reduced frequency.

Methods and apparatus for adjusting a variable rate of requesting software data from a vehicle

Calibration for a vehicle electronic control unit (ECU) includes determining a trigger event configured to initiate a check for updates to calibration data files of the ECU, iterating through calibration part numbers present in the ECU, and accessing, from a memory device in communication with the vehicle, in response to the iterating, a chain of parts table in a linked list that maps calibration part numbers identified in the ECU unit to any subsequently-issued calibration part numbers. The subsequently-issued calibration part numbers reflect an index to the updates to the calibration data files. The calibration also includes searching the chain of parts table using the calibration part numbers identified in the ECU to determine a corresponding subsequently-issued calibration part number, selecting one of the updates to the calibration data files using the subsequently-issued calibration part number from the memory device, and updating the ECU with the selected update.

Vehicle electronic control unit calibration

A method is provided for performing a map update for a navigation device. The method includes: receiving a manifest file corresponding to a map update package and receiving a digital signature corresponding to the manifest file, wherein the map update package comprises a plurality of pieces; verifying, by a processor, the digital signature; receiving, after successful verification of the digital signature, a piece of the map update package to be written to a storage of the navigation device; verifying, by the processor, the received piece using the received manifest file; and writing, in response to successful verification of the received piece, the received piece to the storage of the navigation device.

Secure and interruptible transfer of a map update package to a navigation device

A system and method of authenticating data files is provided. The method includes providing a plurality of software part files and a manifest file associated with the software part files. The manifest file identifies each of the plurality of software part files. The method includes associating the manifest file with a manifest detached digital signature. The method also includes digitally signing the manifest file with the manifest detached digital signature. The manifest detached digital signature authenticates the manifest file. The method includes associating each of the plurality of software part files with one a plurality of unique detached digital signatures. The method includes digitally signing each of the plurality of software part files with one of the plurality of unique detached digital signatures. Each of the plurality of unique detached digital signatures authenticates one of the software part files.

System and method of authenticating multiple files using a detached digital signature

A method and control system enable at least one adjustable setting of an apparatus in a vehicle to be changed in response to a selection made by a user of the vehicle either from the vehicle or from a location remote to the vehicle. The system has a user actuated input device that provides a control signal in response to a setting selection by the user. A server system stores a program for operating the method and system. A vehicle control system is provided onboard the vehicle. A communication network couples the server system to the vehicle control system so that so that the user can control the setting for the apparatus by operating the input device. The computer system records the vehicle settings in a database.

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Rochester Hills, MI, United States of America

Susanta P Sarkar