Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1991-10-18
1993-08-31
Chin, Tommy
Facsimile and static presentation processing
Facsimile
Recording apparatus
340784, H04N 570
Patent
active
052413926
ABSTRACT:
In a method of driving liquid crystal cells in an active matrix addressed display of the resistively-coupled transistor type whereby interlacing of alternate rows of pixels is achieved, rows N-1, N+1, N+3, - - - of the cells are addressed in sequence in a first field period by applying transistor turn-on pulses to the associated row address lines while reference signals are applied to the row address lines associated with rows, N, N+2, N+4, - - - in sequence, the turn-on pulse for the row N-1 and the reference signal for the row N being coincident. During a second field period of the transistor turn-on pulses are applied to the address lines for rows N, N+2, N+4, - - - while reference signals are applied to the address lines for rows N-1, N+3, N+5, - - - the turn-on pulse for the row N and the reference signal for the row N+1 being coincident. The reference signal may be of two different magnitudes which alternate at the line rate or at the frame rate of a television video signal.
REFERENCES:
patent: 4455576 (1984-06-01), Hoshi
patent: 4635127 (1987-01-01), Togashi
patent: 4789899 (1988-12-01), Takahashi
patent: 5038139 (1991-08-01), Fujisawa
Liquid Crystal Matrix Displays, by Bernard J. Lechner, et al., Proceedings Of The IEEE, vol. 59, No. 11, Nov. 1971, pp. 1566-1579.
Mosley Alan
Rundle Patrick C.
Chin Tommy
GEC--Marconi Limited
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