Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1987-12-30
1990-02-20
Brigance, Gerald
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
G09G 106
Patent
active
049030132
ABSTRACT:
A display system for displaying characters on a screen which is divided into a plurality of display areas and for allowing a scroll within each of the display areas with one chip of display data RAM without image confusion between the display area. The display data RAM is also divided into plural areas corresponding to the display areas. This system includes address conversion circuit provided between a display controller and the display data RAM for converting a virtual address outputted from the display controller into an actual address of the display data RAM. Here the virtual address is an address out of actual address of the display data RAM.
REFERENCES:
patent: 4375638 (1983-03-01), O'Keefe et al.
patent: 4386410 (1983-05-01), Pandya et al.
patent: 4412294 (1983-10-01), Watts et al.
patent: 4491834 (1985-01-01), Oguchi
patent: 4527154 (1985-07-01), Tanaka
patent: 4594587 (1986-06-01), Chandler et al.
patent: 4618858 (1986-10-01), Belch
patent: 4706076 (1987-11-01), Racchini
Patent Abstracts of Japan, vol. 7, No. 266 (P239) 26th Nov. 1983; & JP-A-58 146 930 (Hitachi Seisakusho KK) 1/9/83.
Brigance Gerald
Brother Kogyo Kabushiki Kaisha
Hjerpe Richard
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