Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1990-07-31
1993-10-05
Nguyen, Phu K.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
395150, 395144, 345143, G06F 1566
Patent
active
052512932
ABSTRACT:
A character display apparatus comprises at least a memory for storing a character code designating a desirable character and attribute data designating an attribute thereof as one pair of data; a first character generator for pre-storing font data corresponding to English characters and figures; a second character generator for pre-storing font data corresponding to Chinese characters; a judgment portion and a control portion. The judgment portion judges whether one character is designated by one character code or two or more character codes which are read from the memory in accordance with scanning of a display screen. Based on the judgment result of this judgment portion, character reading operation of the control portion is controlled. Next, in the case where the alpha-numeric characters are to be displayed, the font data corresponding to the character code read from the memory are read from the first character generator so that each of the alpha-numeric characters will be displayed in the attribute represented by the attribute data accompanied with the character code under control of the control portion. On the other hand, in the case where the Chinese characters are to be displayed, the font data corresponding to the character code read from the memory are read from the second character generator so that each Chinese character will be displayed in the attribute represented by the attribute data accompanied with the character code.
REFERENCES:
patent: 4670841 (1987-06-01), Kostopoulos
patent: 4723217 (1988-02-01), Nakano et al.
patent: 4785391 (1988-11-01), Apley et al.
Ishii Takatoshi
Ogawa Taiju
Omae Shozo
Ascii Corporation
Nguyen Phu K.
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