Vehicle-mounted program writing device

• US 10,061,576 B2
• Filed: 06/19/2015
• Issued: 08/28/2018
• Est. Priority Date: 06/19/2014
• Status: Active Grant

• Current Assignee: Hitachi Astemo Ltd. (Hitachi, Ltd.)
• Original Assignee: Hitachi Automotive Systems Limited (Hitachi, Ltd.)
• Inventors: Kurosawa, Kenichi, Nakahara, Fumiharu
• Primary Examiner(s): ST LEGER, GEOFFREY R
• Application Number:
  US15/312,088
• Publication Number:
  US 20170090907A1
• Time in Patent Office: 1,166 Days
• Field of Search: 717168-178
• CPC Class Codes: B60R 16/02 electric constitutive elements
• CPC Class Codes: G06F 11/00 Error detection; Error correction; Monitoring error detection, correction or monitoring in information storage based on relative movement between record carrier and transducer G11B20/18; monitoring, i.e. supervising the progress of recording or reproducing G11B27/36; in static stores G11C29/00
• CPC Class Codes: G06F 8/65 Updates security arrangements therefor G06F21/57
• CPC Class Codes: G06F 8/654 using techniques specially adapted for alterable solid state memories, e.g. for EEPROM or flash memories

Abstract

A vehicle-mounted program writing device includes a plurality of vehicle-mounted control devices and a relay device. If a write start command button is turned on when a memory storage completion indicator is in an on state, the relay device starts the writing of the updated programs and the updated data to the vehicle-mounted control devices. If the memory storage completion indicator is in off state, the relay device does not execute the writing of the updated programs and the updated data even when the write start command button is turned on.

Claims

1. A vehicle-mounted program writing device, comprising:

a plurality of vehicle-mounted control devices which control operations of vehicle-mounted devices by using a control program; and

a relay device which receives updated program data transmitted from an external center and stores the updated program data in a memory, the updated program data including updated programs and updated data for the vehicle-mounted control devices,

wherein a vehicle-mounted control device has a normal operation mode of executing the control program and a repro mode of rewriting the control program to the updated program,

the vehicle-mounted control device and the relay device are connected through a vehicle-mounted network,

the relay device has a memory storage completion indicator, a write start command button, and a write completion indicator,

the relay device turns on the memory storage completion indicator when the reception of the updated program data for the plurality of vehicle-mounted control devices transmitted from the external center is completed when an ignition is in an on state,

if the write start command button is turned on when the memory storage completion indicator is in an on state,

the relay device starts the writing of the updated programs and the updated data to the vehicle-mounted control devices,

the relay device turns on the write completion indicator after the write completion, and

if the memory storage completion indicator is in off state, the relay device does not execute the writing of the updated programs and the updated data even when the write start command button is turned on.

2. The vehicle-mounted program writing device according to claim 1, wherein, if the write start command button is turned on when the memory storage completion indicator is in an on state, the ignition is in an on state, and a shift gear position of the vehicle is in a parking position,

the writing of the updated programs and the updated data to the vehicle-mounted control devices is started,

the write completion indicator is turned on after the write completion, and

if the memory storage completion indicator is in off state, if the ignition is in an off state, or if the shift gear of the vehicle is in a position other than the parking, the writing of the updated programs and the updated data is not executed even when the write start command button is turned on.

3. A vehicle-mounted program writing device, comprising:

a plurality of vehicle-mounted control devices which control operations of vehicle-mounted devices by using a control program; and

a relay device which receives updated program data transmitted from an external center and stores the updated program data in a memory, the updated program data including;

i) updated programs and updated data for the vehicle-mounted control devices,

wherein a vehicle-mounted control device has a normal operation mode of executing the control program and a repro mode of rewriting the control program to the updated program,

the vehicle-mounted control device and the relay device are connected through a vehicle-mounted network,

the relay device has a memory storage completion indicator, a write start command button, and a write completion indicator,

the relay device has a means for turning on the memory storage completion indicator when the reception of the updated program data for the plurality of vehicle-mounted control devices transmitted from the external center is completed when an ignition is in an on state,

a means for starting the writing of the updated programs and the updated data to the vehicle-mounted control devices when the memory storage completion indicator is turned on and a time when the write start command button is turned on is within a range of a second time slot,

a means for turning on the write completion indicator after the write completion, and

a means for not executing the writing when the memory storage completion indicator is in off state or when the time when the write start command button is turned on is out of the range of the second time slot.

4. The vehicle-mounted program writing device according to claim 3, wherein the vehicle-mounted program writing device has a means for starting the writing of the updated programs and the updated data to the vehicle-mounted control devices when the memory storage completion indicator is turned on, the ignition is in an on state, a shift gear position of a vehicle is in a parking position, and the time when the write start command button is turned on is within the range of the second time slot,

a means for turning on the write completion indicator after the write completion, and

a means for not executing the writing when the memory storage completion indicator is in off state, when the ignition is in an off state, when the shift gear of the vehicle is in a position other than the parking, or when the time when the write start command button is turned on is out of the range of the second time slot.