ONLINE UPDATE METHOD FOR VEHICLE-MOUNTED DEVICE

• US 20120124571A1
• Filed: 11/07/2011
• Published: 05/17/2012
• Est. Priority Date: 11/12/2010
• Status: Active Grant

• Current Assignee: Clarion Co., Ltd. (Faurecia SA)
• Original Assignee: Clarion Co., Ltd. (Faurecia SA)
• Inventors: Nagai, Yasushi, Shimizu, Atsushi, Kasuya, Hiroyuki, Akutsu, Shoichi, Kawamura, Shinji, Sumitomo, Yoshitaka
• Granted Patent: US 9,092,288 B2
• Time in Patent Office: Days
• US Class Current: 717/173
• CPC Class Codes: G06F 1/30 Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations for resetting only G06F1/24
• CPC Class Codes: G06F 11/1433 during software upgrading
• CPC Class Codes: G06F 8/61 Installation
• CPC Class Codes: G07C 5/00 Registering or indicating the working of vehicles
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

When a power supply is cut off on updating programs, improper data remains since the power source to be supplied to the vehicle-mounted device is unstable. The check for the improper data and restoration processing are required for a reactivation processing implemented by an update processing unit so that the update is completed correctly, therefore, the user is waited. In contrast, the update processing also implemented by the update processing unit for a time period during which the power source becomes unstable is interrupted, and implemented for the time period during which the power source voltage is stable. In consequence, the update processing is carried on steadily without making the user wait.

Claims

1. A vehicle-mounted device, mounted on a vehicle, providing a processor and storage device to execute a program, stored in the storage device, by the processor, wherein

the vehicle provides a vehicle condition acquisition means to acquire a vehicle condition including a brake pedal condition,

the vehicle-mounted device provides an update processing means of the program and an interrupt and restart detecting means, and

the update processing means implements an update processing of the program when the vehicle condition acquired by the vehicle condition acquisition means dissatisfies a predetermined update processing interrupt condition and interrupts the update processing of the program when satisfying the update processing interrupt condition.

2. The vehicle-mounted device according to claim 1 wherein

(1) the vehicle condition acquired by the vehicle condition acquisition means further includes a vehicle speed, and the update processing interrupt condition indicates that the vehicle speed is zero and the brake pedal is being actuated,

(2) the vehicle condition acquired by the vehicle condition acquisition means further includes a parking brake condition, and the update processing interrupt condition indicates that the parking brake is being actuated and the brake pedal is being actuated,

(3) the vehicle condition acquired by the vehicle condition acquisition means further includes a vehicle power source condition, and the update processing interrupt condition indicates that the power source condition is either a state ACC_OFF or a state ACC ON state and the brake pedal is being actuated, and

(4) the vehicle condition acquired by the vehicle condition acquisition means further includes the vehicle power source condition, and the update processing interrupt condition indicates that the power source condition is not the state ACC_OFF.

3. The vehicle-mounted device according to claim 1 wherein

the vehicle-mounted device further provides an update data acquisition means of the program and

the update data acquisition means implements an update data acquisition processing of the program when the vehicle condition acquired by the vehicle condition acquisition means dissatisfies a predetermined update data acquisition interrupt condition, and interrupts the update data acquisition processing of the program when satisfying the update data acquisition interrupt condition.

4. The vehicle-mounted device according to claim 3 wherein

the vehicle condition acquired by the vehicle condition acquisition means further includes the vehicle speed, and the update data acquisition interrupt condition indicates that the vehicle speed is zero and the brake pedal is being actuated.

5. The vehicle-mounted device according to claim 1 wherein

the vehicle-mounted device further provides a reactivation update processing means of the program,

the reactivation update processing means implements a reactivation update processing process of the program when the vehicle condition acquired by the vehicle condition acquisition means dissatisfies a predetermined reactivation update processing interrupt condition, and interrupts the reactivation update processing process of the program when satisfying the reactivation update processing interrupt condition.

6. The vehicle-mounted device according to claim 5 wherein

the vehicle condition acquired by the vehicle condition acquisition means further includes the vehicle power source condition, and the reactivation update processing interrupt condition indicates that the power source condition is not the state ACC_OFF.

7. The vehicle-mounted device according to claim 1 wherein

the vehicle-mounted device further provides a load acquisition means of the program,

the update processing means implements the update processing of the program when the acquired load of the processor is less than 60% or the vehicle condition acquired by the vehicle condition acquisition means dissatisfies the update processing interrupt condition, and interrupts the update processing of the program when the acquired load of the processor is an equal to or less than 60% or satisfying the update processing interrupt condition.

8. The vehicle-mounted device according to claim 3 wherein

the update data acquisition means includes a wire/wireless communication interface or a carriageable memory.