Switch device and electronic device which includes such switch d

Details Switch device and electronic device which includes such switch d Switch device and electronic device which includes such switch d

1997-12-03

1999-08-31

Miska, Vit

Horology: time measuring systems or devices

Chronological

With auxiliary illumination for display

368 69, 368 82, 307116, 307121, 307122, C04B 1930, G04C 1700, H01H 3500, H02B 124

Patent

active

059462744

ABSTRACT:
When an inclination switch SW3 is turned on by inclining a wristwatch 12 up at 12 o'clock within a predetermined time after an acceleration switch SW2 is turned on in a state where an auto mode on/off subswitch SW1-1 is on, a lighting circuit lights up an electroluminescence panel EL and puts off same automatically after a predetermined time has passed. If the auto mode subswitch SW1-1 is off, there is no possibility that the panel EL will be lighted up even when the user makes a motion to look at the time displayed on the wristwatch. As a result, the panel EL is not recklessly lighted up excluding by the user's intended motion, useless power consumption is suppressed to prolong the life of a battery used.

REFERENCES:
patent: 3823550 (1974-07-01), Bergey
patent: 3921385 (1975-11-01), Harding et al.
patent: 4036007 (1977-07-01), Shelley
patent: 4095408 (1978-06-01), Kashio
patent: 5612931 (1997-03-01), Sato et al.

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