Communications: electrical – Systems – With specific power supply
Patent
1972-06-09
1976-12-21
Trafton, David L.
Communications: electrical
Systems
With specific power supply
340324R, 350160LC, G02F 113, G08B 536
Patent
active
039991806
ABSTRACT:
Corresponding segments of each display character are connected to common drive voltage conductors to which are applied pulsed DC drive voltages of predetermined polarities and pulse widths in response to segment logic inputs. Base conductors on the opposite plate of the display for each display position are connected to individual conductors to which are applied pulsed DC drive voltages of predetermined polarities and pulse widths in response to a character logic input. The drive voltages on the base conductors and on the conductor segments corresponding to selected input characters are opposite in polarity and have approximately the same pulse width. Drive voltages on other (i.e. unselected) base conductors and conductor segments have the same polarities. The drive voltages are synchronized.
REFERENCES:
patent: 3505804 (1970-04-01), Hofstein
patent: 3575492 (1971-04-01), Nester et al.
patent: 3653745 (1972-04-01), Mao
patent: 3668689 (1972-06-01), Drage
patent: 3674341 (1972-07-01), Hedman et al.
patent: 3698012 (1972-10-01), Ensminger et al.
patent: 3715881 (1973-02-01), Girard
patent: 3723749 (1973-03-01), Shapiro
patent: 3750383 (1973-08-01), Kakizawa
Hamann H. Fredrick
Rockwell International Corporation
Trafton David L.
Weber Jr. G. Donald
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