초록 ▼

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

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.

대표청구항 ▼

A system for the localization of a region of a display device for displaying a mixed text-picture, comprising means for scanning the region to be localized, means for generating a cursor signal during scanning of such region, means for moving the position of said cursor in two dimensions in the pict

A system for the localization of a region of a display device for displaying a mixed text-picture, comprising means for scanning the region to be localized, means for generating a cursor signal during scanning of such region, means for moving the position of said cursor in two dimensions in the picture of said display device, means for mixing said cursor signal with picture information so that a rectangular cursor area appears with a different brightness than the information which is presented normally, means responsive to a data input for controlling the length and width of said cursor area, whereby the size and shape of said cursor can be modified by modifying said data input, and means for periodically changing the data input to progressively alter the length and width of said cursor area.