Title:
DEPRESSION JUDGMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2004/036403
Kind Code:
A1
Abstract:
There is provided a depression judgment device capable of judging ON/OFF without being affected by chattering generated when a key switch is turned on. The depression judgment device includes: a timer switching circuit whose time can be set from outside; a depression timer circuit for counting the time based on the time set on the timer switching circuit as a cycle; a depression storage section for receiving and storing information on whether the key switch is depressed when the depression timer circuit has a predetermined value; and a depression judgment circuit for judging that the key switch is depressed when the depression storage section has received information indicating that the key switch has been depressed n times (n is a positive integer not smaller than 2) or more continuously.
Inventors:
OTA KAZUYO (JP)
KIHARA HIDEYUKI (JP)
KIHARA HIDEYUKI (JP)
Application Number:
PCT/JP2003/013354
Publication Date:
April 29, 2004
Filing Date:
October 20, 2003
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
OTA KAZUYO (JP)
KIHARA HIDEYUKI (JP)
OTA KAZUYO (JP)
KIHARA HIDEYUKI (JP)
International Classes:
G06F3/02; H03K5/1254; H03K17/94; H03M11/00; H03K5/00; (IPC1-7): G06F3/02
Foreign References:
| JPS61133861U | 1986-08-21 | |||
| JPS6336324A | 1988-02-17 |
Attorney, Agent or Firm:
Higashima, Takaharu (Daiko Building 2-14, Umeda 3-chome, Kita-k, Osaka-shi Osaka, JP)
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