Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1977-09-02
1980-06-03
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340756, 350333, 340799, G09F 932
Patent
active
042064597
ABSTRACT:
A numeral display device has a first board member provided with a first group of pattern electrodes arranged to define a plurality of digits, each forming a figure eight pattern, the digits being arranged in an upper row and a lower row wherein for each digit the segment for the decimal point is electrically connected with at least a segment in the figure eight pattern while the other segments in said figure eight pattern are connected to display particular information, a second board member placed in facing relationship with said first board member and provided with a second group of pattern electrodes arranged to define a plurality of digits each forming a figure eight shaped pattern, the digits being arranged in an upper row and a lower row wherein for each digit the segment for decimal point is connected with at least a segment in the figure eight pattern other than those corresponding to the segments connected with the decimal point segment in said first board member while the other numerical segments are connected to display particular information, a displaying material provided between said first and second board members, and a circuit for providing the electrode groups in said first and second board members with respective drive signals thereby enabling display of different numerals in said upper and lower rows.
REFERENCES:
patent: 3738099 (1973-06-01), Tanaka
patent: 3781863 (1973-12-01), Fujita
patent: 3831166 (1974-08-01), De Nardo
patent: 4034368 (1977-07-01), Shimomura
patent: 4078374 (1978-03-01), Kondo
patent: 4091377 (1978-05-01), Shimoi
Twisted Nematic Displays for Multiplexing, Kmetz, pp. 36 & 37.
Houryu Sakae
Seki Mitsuaki
Canon Kabushiki Kaisha
Curtis Marshall M.
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