Online update method for vehicle-mounted device

• US 9,092,288 B2
• Filed: 11/07/2011
• Issued: 07/28/2015
• 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
• Primary Examiner(s): Wong, Don
• Assistant Examiner(s): KRETZMER, ERIKA A
• Application Number:
  US13/290,380
• Publication Number:
  US 20120124571A1
• Time in Patent Office: 1,359 Days
• Field of Search: None
• US Class Current: 1/1
• 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. The power source voltage is considered to be unstable based on a function of the vehicle speed, brake pedal actuation, parking brake actuation, and/or power source activation. 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 a storage device to execute a program stored in the storage device by the processor, the vehicle-mounted device comprising:

an interrupt and restart detecting unit, configured to acquire a vehicle condition including a brake pedal condition, a vehicle speed, and a parking brake condition from a vehicle condition acquisition interface and to acquire the conditions of a power source from a power source interface;

an update processing unit, configured to;

continue an update processing of the program when a current vehicle condition, having been acquired by the interrupt and restart detecting unit does not satisfy a predetermined update processing interrupt condition; and

interrupt the update processing of the program when the current vehicle condition having been acquired by the interrupt and restart detecting unit satisfies the update processing interrupt condition,

wherein;

(1) the update processing interrupt condition is that the vehicle speed is zero and the brake pedal is being actuated,

(2) the update processing interrupt condition is that the parking brake is being actuated and the brake pedal is being actuated,

(3) the update processing interrupt condition is that the power source condition is either in an ACC OFF state or in an ACC ON state and the brake pedal is being actuated, or

(4) the update processing interrupt condition is that the power source condition is not in the ACC_OFF state, and

wherein

the ACC ON state is a state in which the engine on the vehicle stops and power is supplied to the vehicle-mounted device, and

the ACC_OFF state is a state in which the engine on the vehicle stops and power is not supplied to the vehicle-mounted device.

2. The vehicle-mounted device according to claim 1, further comprising:

an update data acquisition means of the program configured to;

implement an update data acquisition processing of the program when the vehicle condition acquired by the vehicle condition acquisition interface does not satisfy a predetermined update data acquisition interrupt condition, and

interrupt the update data acquisition processing of the program when the update data acquisition interrupt condition is satisfied.

3. The vehicle-mounted device according to claim 2, wherein

the vehicle condition acquired by the vehicle condition acquisition interface 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.

4. The vehicle-mounted device according to claim 1, further comprising:

a reactivation update processing means of the program, configured to;

implement a reactivation update processing process of the program when the vehicle condition acquired by the vehicle condition acquisition interface does not satisfy a predetermined reactivation update processing interrupt condition, and

interrupt the reactivation update processing process of the program when the reactivation update processing interrupt condition is satisfied.

5. The vehicle-mounted device according to claim 4, wherein

the vehicle condition acquired by the vehicle condition acquisition interface further includes the vehicle power source condition, and

the reactivation update processing interrupt condition indicates that the power source condition is not the ACC_OFF state.

6. The vehicle-mounted device according to claim 1, wherein:

the vehicle-mounted device further comprises a load acquisition unit;

the update processing unit;

implements the update processing of the program when the acquired load of the processor is less than a predetermined value or the vehicle condition acquired by the vehicle condition acquisition interface does not satisfy the update processing interrupt condition, and

interrupts the update processing of the program when the acquired load of the processor is equal to or less than the predetermined value or the vehicle condition acquired by the vehicle condition acquisition interface satisfies the update processing interrupt condition.

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

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

8. The vehicle-mounted device according to claim 1, wherein:

the update processing unit is configured to continue the update processing of the program when the vehicle condition acquired by the vehicle condition acquisition interface does not satisfy a predetermined update processing interrupt condition with determining that the power source is stable; and

the interrupt and restart detecting unit is configured to interrupt the update processing of the program when the vehicle condition acquired by the vehicle condition acquisition interface satisfies the update processing interrupt condition with predicting that the power source becomes unstable.

9. The vehicle-mounted device according to claim 8, wherein:

the interrupt and restart detecting unit is further configured to;

set an interrupt flag for the update processing to OFF in a case that the vehicle condition acquired by the vehicle condition acquisition interface does not satisfy a predetermined update processing interrupt condition with determining that the power source is stable; and

set the interrupt flag to ON in a case that when the vehicle condition acquired by the vehicle condition acquisition interface satisfies the update processing interrupt condition with predicting that the power source becomes unstable; and

the update processing unit is configured to;

continue the update processing of the program if the interrupt flag has been set to OFF; and

interrupt the update processing of the program if the interrupt flag has been set to ON.