Electrical resistors – Incased – embedded – or housed – With gaseous or vacuum spacing between element and casing or...
Patent
1988-12-29
1991-10-15
Groody, James J.
Electrical resistors
Incased, embedded, or housed
With gaseous or vacuum spacing between element and casing or...
358148, 358153, 340784, H04N 570
Patent
active
050579282
ABSTRACT:
The invention relates to a drive apparatus for a liquid crystal display device. The voltage, to be applied to longitudinally and latitudinally arranged liquid crystal cells of the liquid crystal display device, is altered in polarity from field to field and from frame to frame, whereby the occurrence of flicker is prevented. The field discriminating device counts the numbers of lines in first and second fields by synchronizing a vertical synchronizing signal at a leading point of a field time. Thereafter the difference in the number of lines between the first and second fields is detected, the field times being thereby discriminated. When a video signal is erroneous, the field discriminating device provides a field discriminating signal, the level of which is changed alternately from field time to field time.
REFERENCES:
patent: 4393379 (1983-07-01), Berting et al.
patent: 4455576 (1984-06-01), Hoshi
patent: 4635127 (1987-01-01), Togashi
patent: 4694348 (1987-09-01), Kamiya et al.
patent: 4694349 (1987-09-01), Takeda et al.
patent: 4789899 (1988-12-01), Takahashi et al.
patent: 4792857 (1988-12-01), Akiyama
Kawaguchi Takafumi
Matsumoto Toshio
Nagashima Nobuyoshi
Takeda Makoto
Yasuda Shuhei
Groody James J.
Powell Mark R.
Sharp Kabushiki Kaisha
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