Device for the designation of an image

Details Device for the designation of an image Device for the designation of an image

1975-07-02

1976-12-07

Trafton, David L.

Communications: electrical

Systems

Portable self-contained

315367, 3401725, G06F 314

Patent

active

039965821

ABSTRACT:
The invention relates to a device for designating an element of an image in a display assembly. The device comprises a system providing the coordinates of a marked element of the displayed image, comparator receiving the coordinates of the marked element and receiving from a vector generator the moving coordinates of successive elements of the image while refreshed, and a register controlled for load by simultaneous coincidence the two pairs of coordinates for receiving the address of the marked element from an address counter associated with a memory recording the data that define the image. The invention also relates to an assembly for displaying information from a data processor on a scanned display screen.

REFERENCES:
patent: 2847661 (1958-08-01), Althouse
patent: 3317783 (1967-05-01), Neumeister
patent: 3541521 (1970-11-01), Koster
patent: 3541541 (1970-11-01), Engelbart
patent: 3581290 (1971-05-01), Sugarman
patent: 3835464 (1974-09-01), Rider

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