Electric lamp and discharge devices – With character display – Gaseous discharge medium
Patent
1974-05-01
1976-08-24
Demeo, Palmer C.
Electric lamp and discharge devices
With character display
Gaseous discharge medium
313190, 313220, H01J 6130, H01J 6166
Patent
active
039769070
ABSTRACT:
An indicator display tube in which indicator electrode units, each consisting of anode and cathode segments, lie in the same plane and in which all of the cathode segments are simultaneously energized and the anode electrodes are energized on a time sequential basis in such a manner that only the indicator electrode unit having its anode electrodes energized will glow at a particular time. The cathode segments of each indicator unit are connected in parallel which substantially reduces the number of leads to the display tube over conventional indicators which require a separate lead for energizing each of the cathode segments. The indicator display tube has means for preventing accidental discharge of adjacent indicator electrode units which would produce erroneous message displays.
REFERENCES:
patent: 2686273 (1954-08-01), Hough et al.
patent: 3418509 (1968-12-01), Frouws et al.
patent: 3588571 (1971-06-01), Vemura et al.
patent: 3666981 (1972-05-01), Lay
patent: 3675065 (1972-07-01), Warne
patent: 3780341 (1973-12-01), Holz et al.
patent: 3868535 (1975-02-01), Kupsky
Muramoto Shoichi
Ohgoshi Akio
Yamanaka Akira
Yanagisawa Yuzuru
DeMeo Palmer C.
Sony Corporation
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