On-vehicle terminal system

• US 20030036843A1
• Filed: 07/24/2002
• Published: 02/20/2003
• Est. Priority Date: 07/25/2001
• Status: Active Grant

• Current Assignee: Clarion Co., Ltd. (Faurecia SA)
• Original Assignee: Clarion Co., Ltd. (Faurecia SA)
• Inventors: Endo, Yoshinori, Nakamura, Kozo, Okude, Mariko, Kamiwaki, Tadashi, Hiroshige, Hideo
• Granted Patent: US 7,502,674 B2
• Time in Patent Office: Days
• US Class Current: 701/200
• CPC Class Codes: G06F 2009/45579 I/O management, e.g. providing access to device drivers or storage
• CPC Class Codes: G06F 2009/45591 Monitoring or debugging support
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects
• CPC Class Codes: G06F 9/4843 by program, e.g. task dispatcher, supervisor, operating system

Abstract

In an on-vehicle terminal system operating a plurality of operating systems, control of peripheral devices connected to the on-vehicle terminal system can be continued even if one of the operating systems is stopped.

A second operating system monitors an operating status of a first operating system using an OS status monitoring function. When the first operating system stops, a list recording allocation of the peripheral devices is updated to switch the allocation to the second operating system. By doing so, an interrupt signal from a peripheral device is allocated to the second operating system, and accordingly the second operating system can control the peripheral device.

Claims

1. An on-vehicle terminal system in which a plurality of operating systems is operated, which comprises:

operating status acquisition means for acquiring an operating status of each of the operating systems;

allocation memory means for storing allocation of peripheral devices to be controlled by said on-vehicle terminal system to each of the operating systems; and

allocation switching means for switching allocation of one of the peripheral devices allocated to one of said operating systems to the other one of said operating systems based on said allocation memory means when said operating status acquisition means acquires a fact that said one of said operating systems stops.

2. An on-vehicle terminal system according to claim 1, which further comprises

means for allocating an interrupt requested from one of said peripheral devices to one of said operating systems based on said allocation memory means.

3. An on-vehicle terminal system according to claim 2, which further comprises

means for restarting the operating systems, wherein

said operating status acquisition means restarts one of said operating systems when said operating status acquisition means acquires a fact that said one of said operating systems stops, and

said allocation switching means returns the other one of said operating systems to said one of said operating systems in said allocation memory means when said operating status acquisition means acquires a fact that said one of said operating systems is restarted.

4. An on-vehicle terminal system according to claim 2, wherein

said peripheral devices include a communication unit, and

the on-vehicle terminal system further comprises:

abnormality acquisition means for acquiring information on abnormalities of a vehicle; and

emergency communication means for sending information on abnormality using said communication unit when said abnormality acquisition means acquires the information on abnormality.

6. An on-vehicle terminal system according to any one of claims 4 and 5, which further comprises:

position detecting means for detecting a position of the vehicle, wherein

said emergency communication means for sending a message to a predetermined message receiver according to the position of the vehicle.

7. An on-vehicle terminal system according to claim 4, wherein

said communication unit comprises a wireless interface.

8. An on-vehicle terminal system according to any one of claims 1 to 7, which comprises a navigation function.

5. An on-vehicle terminal system having communication means for controlling a communication unit, which comprises:

abnormality acquisition means for acquiring information on abnormalities of a vehicle; and

emergency communication means for sending information on abnormality using said communication unit when said abnormality acquisition means acquires the information on abnormality.