Boots – shoes – and leggings
Patent
1990-08-09
1991-11-12
Chan, Eddie P.
Boots, shoes, and leggings
364707, 3649486, 3649488, 364DIG2, 365227, G06F 132
Patent
active
050653571
ABSTRACT:
A data processing machine which is provided with a liquid crystal display unit having an electroluminescent panel functioning as the backlighting source of the liquid crystal display unit, which includes a circuit for counting the period during which the electroluminescent panel is inoperative and a control circuit that extinguishes the illumination of the electroluminescent panel in response to a signal output from the time-counting circuit. Furthermore, a circuit indicating to the operator that the extinguished illumination of the electroluminescent panel is due to operation of the above controlled circuit can also be provided.
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patent: 4293927 (1981-10-01), Hoshii
patent: 4365290 (1982-12-01), Nelius et al.
patent: 4381552 (1983-04-01), Nocilini et al.
patent: 4562478 (1985-12-01), Hirasawa et al.
"Backlite Lights Handheld Multimeter", Electronic Engineering, vol. 56, No. 689, May 1984, pp. 19, 20.
Patent Abstracts of Japan, vol. 8, No. 165 (P-291)(1602), JP-A-59 60 524 (Toshiba K.K.), Apr. 6, 1984.
Kawano Isao
Shiraishi Tomikatsu
Chan Eddie P.
Sharp Kabushiki Kaisha
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