Communications: electrical – Continuously variable indicating – With meter reading
Patent
1988-07-21
1990-11-13
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
340715, 340765, 340642, G05B 2300, G08B 2100
Patent
active
049705032
ABSTRACT:
A method for continuously and automatically monitoring the electrical operability and control reliability in a liquid crystal display unit and comprising, inter alia, determining the discharge or charge time of a capacitor comprised of a segment and the backplate or return electrode of the display unit when a voltage waveform fed to the segment has been disconnected, said time being determined by a binary counter which commences at the moment of disconnection of the feed waveform and stops when the capacitive discharge or charge waveform differs in binary state from the value of the segment feed wave.
REFERENCES:
patent: 4247852 (1981-01-01), Utzinger
patent: 4311993 (1982-01-01), Strobel
Gargano Vito
Principe Francesco
Lau Yuk H.
Nuovopignone-Industrie Meccaniche e Fonderia S.p.A.
Yusko Donald J.
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