Subwindow processing device by variable addressing

Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel

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345119, 395344, G09G 514

Patent

active

056965281

ABSTRACT:
A subwindow processing device using variable addressing which does not perform conversion such as storing, backing up and copying directly accessing the data, but processes the generation and movement of a plurality of subwindows by accessing the subwindow data stored in memory according to subwindow variables. Therefore, since the load to the central processing unit and the data bus is reduced, a fast screen processing can be possible, and also, when being applied to a system requiring a fast screen shifting and to a multitasking system in which other functions such as voice data processing and communication data processing are performed along with the screen processing, the system performance can be enhanced.

REFERENCES:
patent: 5025249 (1991-06-01), Seiler et al.
patent: 5047755 (1991-09-01), Morita et al.
patent: 5129055 (1992-07-01), Yamazaki et al.
patent: 5216413 (1993-06-01), Seiler et al.
patent: 5440680 (1995-08-01), Ichikawa et al.

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