Display system for localizing regions in a mixed text & picture

Details Display system for localizing regions in a mixed text & picture Display system for localizing regions in a mixed text & picture

1980-09-24

1982-10-12

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340725, 340731, G09G 116

Patent

active

043541844

ABSTRACT:
A system for localizing a region of a display incorporates a plurality of resettable counters for defining the position and extent of a cursor in two dimensions. Data is set into the counters periodically at the beginning of each frame, or at the beginning of each scanning line, so that the size and shape of the cursor is selectable, as well as its position on the display. When the data is modified during successive time periods, the cursor can be made to progressively reduce its size so as to indicate a point, and/or to progressively change its location.

REFERENCES:
patent: 3576574 (1971-04-01), Baskin et al.
patent: 3868673 (1975-02-01), Mau et al.
patent: 4015846 (1977-04-01), Runte et al.
patent: 4228430 (1980-10-01), Iwamura et al.
patent: 4259725 (1981-03-01), Andrews et al.
Elektronik, 1978, Heft 4, p. 204.

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