Display control device and a method for controlling display

Details Display control device and a method for controlling display Display control device and a method for controlling display

1996-12-24

1999-12-14

Luu, Matthew

Computer graphics processing and selective visual display system

Display driving control circuitry

345339, 345 28, G09G 500

Patent

active

060023910

ABSTRACT:
There is provided a display control device according to which video data for a plurality of windows to be displayed on a display screen is prestored in a video memory regardless of a display position of the video data in each of the windows and an effective zone of each of the windows in a display screen and a priority order of the respective windows are also prestored. With respect to each scanning position in the display screen, one of the windows which is of the highest priority order is selected from among the windows which are being scanned in accordance with an effective display zone and a priority order of each of the windows, and video data of the selected window is read from the video memory on the basis of relation between the display position and the storage position of the video data.

REFERENCES:
patent: 5047755 (1991-09-01), Morita et al.
patent: 5216413 (1993-06-01), Seiler et al.

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