Claims
- 1. A protecting apparatus for protecting an electronic device, the electronic device being provided on a vehicle having a storage battery and a solar battery, and being capable of operating under an output voltage supplied from outputs of the storage battery and the solar battery, the protecting apparatus comprising:
- a reset circuit including means for monitoring normal operation of said electronic device determining whether or not the electronic device operates normally, and resetting the electronic device when it is determined that the electronic device does not operate normally;
- an interruption circuit for interrupting a path on which the voltage is supplied from the solar battery to the electronic device: and
- a control means in said electronic device responsive to said reset circuit for controlling said interruption circuit to interrupt the path from the solar battery to the electronic device when the electronic device is reset by the reset circuit, so that the electronic device may be protected.
- 2. A protecting apparatus according to claim 1, wherein said interruption comprises a switching circuit in the path between the output of the solar battery and the electronic device.
- 3. A protecting apparatus according to claim 2, wherein said switching circuit includes a control terminal for controlling the switching circuit to interrupt the path on which voltage is supplied from the solar battery to the electronic device and wherein an output signal of said control means is input to the control terminal of said switching circuit.
- 4. A protecting apparatus according to claim 3, wherein said control means comprises an output port provided in said electronic device which is connected to the control terminal of said switching circuit, the output impedance of said output port being high when said electronic device is reset by said reset circuit.
- 5. A protecting apparatus according to claim 1, wherein said electronic device comprises a CMOS element which uses the output of the storage battery as a power source.
- 6. A protecting apparatus according to claim 1, wherein said electronic device is a micro, computer, and the reset circuit comprises a power-on-reset circuit for said microcomputer.
- 7. A protecting apparatus according to claim 1, wherein the electronic device includes a CMOS element and the CMOS element is protected by interrupting the path from the solar battery to the electronic device.
Priority Claims (2)
Number |
Date |
Country |
Kind |
2-340094 |
Nov 1990 |
JPX |
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3-300015 |
Nov 1991 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 07/797,918, filed Nov. 26, 1991, now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (3)
Number |
Date |
Country |
3121864 |
May 1982 |
DEX |
59-51451 |
Dec 1984 |
JPX |
1-172016 |
Jul 1989 |
JPX |
Non-Patent Literature Citations (1)
Entry |
German Office Action dated May 11, 1992 issued in the matter of P 41 39 436.4-32-Naldec Corporation (with English translation). |
Continuations (1)
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Number |
Date |
Country |
Parent |
797918 |
Nov 1991 |
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