Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1980-06-02
1981-09-22
Gellner, Michael L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340805, 354 53, 354 60E, G09F 935, G03B 1720
Patent
active
042906865
ABSTRACT:
The present invention relates to a liquid crystal cell having a plural number of electrode pairs arranged on both sides of the liquid crystal matter so as to be opposed to each other, being characterized in that a pulse wave generating device for generating the first pulse wave with smaller amplitude than the threshold value for lighting the liquid crystal and the second pulse wave with larger amplitude than the threshold value for lighting the liquid crystal in reversed phase to each other and a gate device for selectively applying the outputs of the pulse wave generating device to each electrode of the liquid crystal cell in accordance with the input signal are provided. Thus, only the voltage between the selecting electrodes is higher than the threshold value. An input change over device is provided so as to change over the input signal group in a time dividing way in such a manner that a plural number of dots can be displayed visually at the same time. As a result, the wiring is simplified.
REFERENCES:
patent: 4082430 (1978-04-01), Schulthess et al.
patent: 4145129 (1979-03-01), Kawamura et al.
patent: 4177472 (1978-09-01), Freer et al.
Kawamura Masaharu
Momiyama Kikuo
Murakami Hiroyasu
Sakai Shinji
Suzuki Ryoichi
Canon Kabushiki Kaisha
Gellner Michael L.
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