Image display control device, method and computer program produc

Details Image display control device, method and computer program produc Image display control device, method and computer program produc

1996-11-13

1999-02-09

Saras, Steven J.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345128, G09G 522, G09G 526

Patent

active

058700749

ABSTRACT:
A character table unit stores as attribute data of each character of an image a character name, a horizontal direction character size, a vertical direction character size, a horizontal display coordinate value and, a vertical display coordinate. A counter outputs count values indicating a horizontal position and a vertical position in a display screen image. A first writing control unit reads from the character table unit the attribute data of an appropriate character based on the count values of the counter and the attribute data, produces basic size attribute data of basic size characters which constitute at least part of the character. The basic size character is determined to be currently displayed based on the count values. The basic size character attribute data is written in a hit buffer. A image data memory stores character image data. A second writing control unit reads basic size attribute data from the hit buffer, producing addresses based on the basic size attribute data to read character image data from the image data memory, and writing the character image data into a line buffer. Image data is read from the line buffer, in synchronization with the count value indicating a current horizontal position.

REFERENCES:
patent: 5608424 (1997-03-01), Takahashi et al.
patent: 5623316 (1997-04-01), Naito et al.

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