Signal electrode drive circuit for image display apparatus opera

Details Signal electrode drive circuit for image display apparatus opera Signal electrode drive circuit for image display apparatus opera

1988-11-25

1990-10-23

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340811, 340784, G09G 320

Patent

active

049655663

ABSTRACT:
In a signal electrode drive circuit of an image display apparatus, the latch pulses are sequentially shifted for a plurality of latch circuits so as to sequentially latch the digital image data, and the signal electrode of the dot-matrix type display panel is driven by the signal having a plurality of gradation, based upon the digital image data latched in the latch circuits. The image input data are alternately read out via the buffer circuits by two-phase clock pulses, the input data are transferred to the latch circuits in response to the two-phase clock pulses, and, as a consequence, image data of higher transfer frequency can be satisfactorily processed.

REFERENCES:
patent: 4031541 (1977-06-01), Arisawa et al.
patent: 4447812 (1984-05-01), Soneda et al.
patent: 4581654 (1986-04-01), Kobayashi et al.
patent: 4591902 (1986-05-01), Masubuchi
patent: 4600274 (1986-07-01), Morozumi
patent: 4822142 (1989-04-01), Yasui

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