Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1989-11-13
1992-04-21
Oberley, Alvin E.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340723, 358451, 382 47, G09G 106
Patent
active
051072556
ABSTRACT:
A control device for a display apparatus such as an LCD is disclosed. The control device can operate in the window display mode or in the reduced display mode. The control device copmrises: an image data string generating unit for generating a first serial image data string in synchronization with the horizontal scanning: an image data delaying unit for generating a second serial image data string in which each data is delayed from the corresponding data of said first image data string by a period of time corresponding to at least one pixel: a mask signal generator for generating a plurality of mask signals: a first operation unit for applying an OR or AND operation to the first and second iamge data strings to obtain a third image data string: a second operation means for applying an AND or OR operation to the first and second image data strings to obtain a fourth image data string: a mask signal selector for selecting mask signals from the mask signals in accordance with a desired display mode: a data image selector for selecting image data strings from the first to fourth image data strings, and producing a further image data string: and an output unit for masking the further image data string in accordance with the selected mask signals, and outputting the masked iamge data string to the display apparatus.
REFERENCES:
patent: 4484302 (1984-11-01), Carson et al.
patent: 4707729 (1987-11-01), Bruno et al.
patent: 4803478 (1989-02-01), Olsen
patent: 4809099 (1989-12-01), Takano
patent: 4907171 (1990-03-01), Nagashima
Oberley Alvin E.
Sharp Kabushiki Kaisha
Wu Xiao M.
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