Title:
ELECTRONIC CONTROLLER
Document Type and Number:
Japanese Patent JP3404219
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress current consumption sufficiently even in noisy use environment by judging whether an input signal is normal or abnormal when the input signal varies in a sleep state, starting a normal process when it is judged that the input signal is normal, and entering the sleep state immediately if it is judged that the signal is abnormal.
SOLUTION: An MPU 11 inputs input signals from switches 35 and 36, etc., and an antenna 37, other sensors, etc., and other terminal processors, and judges whether an input signal is normal or abnormal before the normal process is started if the input signal varies in the sleep state. When it is judged that the signal is normal, the normal process is started, but when it is judged that the signal is abnormal, the sleep state is immediately entered. Consequently, the circuit which judges whether or not a signal is a signal for waking up the device need not have an oscillation circuit, so the current consumption in the sleeve state can be suppressed.
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Inventors:
▲吉▼田 龍也
Mitsuru Konai
Mitsuru Konai
Application Number:
JP12959996A
Publication Date:
May 06, 2003
Filing Date:
May 24, 1996
Export Citation:
Assignee:
株式会社日立製作所
株式会社日立カーエンジニアリング
株式会社日立カーエンジニアリング
International Classes:
E05B49/00; B60R16/02; B60R16/023; E05B83/00; G05B9/02; G05B15/02; G05B23/02; G06F1/26; G06F11/30; (IPC1-7): G05B23/02; B60R16/02; E05B65/12; G05B9/02; G06F11/30
Domestic Patent References:
| JP491534A | ||||
| JP7125535A | ||||
| JP532142A | ||||
| JP4310444A | ||||
| JP589106U |
Attorney, Agent or Firm:
Yasuo Sakuta (1 outside)
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