Control device for writing for multi-window display

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Details

340721, 340716, 364900, G06F 314, G09G 106

Patent

active

047697628

ABSTRACT:
In a control device for writing data for a multi-window display system having a function to simultaneously display a plurality of pictures on a display surface, there are provided a write controlling mapping buffer storing at corresponding addresses numbers of window display regions for the data to be written into a display frame memory, and a window identification number register provided with a window identification number for the data to be written. The data can be written into the display frame memory only when output of the write controlling mapping buffer and output of the window identification number register agree with each other.

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patent: 4653020 (1987-03-01), Cheselka et al.
patent: 4670752 (1987-06-01), Marcoux
patent: 4682297 (1987-07-01), Iwami
Kikuchi et al., "View Window Function by Mapping Memory", Toshiba Corporation, 1984, pp. 245-246.
Simizu et al., "Appraisal of Multi--Window Display System--I", Mitsubishi Electric Corporation, pp. 247-248.
Fukuoka et al., "Appraisal of Multi--Window Display--II", Mitsubishi Electric Corporation, pp. 249-250.

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