Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1990-08-20
1995-07-18
Weldon, Ulysses
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345125, 340995, G09G 106
Patent
active
054345910
ABSTRACT:
In a scrolling of a display of graphic data in response to an operator command, a characteristic of the data is altered, according to the speed of the scrolling, to facilitate the viewing of the data as the data is scrolled. In one case, a selected part of the data is omitted from the display during scrolling so that a reduced amount of data is displayed, the amount of reduction in displayed data being proportional to the scrolling period. As another possibility, or in addition thereto, the magnification of the data being displayed is varied with variation in the scrolling speed. The magnification can be controlled so that the apparent speed of the movement of the displayed data at a given scrolling speed is maintained substantially constant as the scrolling period is varied from the given scrolling speed. A further possibility is to alter the data by emphasizing a portion of the data in the display in a selected manner. Thus, even when the scrolling speed is set at the maximum speed which the human eye can follow, the displayed data can be viewed easily, and the retrieval operation there by can be facilitated.
REFERENCES:
patent: 4996645 (1991-02-01), Schneyderberg Van Der Zon
Goto Masahiro
Shinno Seiichi
Hitachi , Ltd.
Weldon Ulysses
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