G - Physics – 08 – C
Patent
G - Physics
08
C
375/12, 350/6
G08C 21/00 (2006.01)
Patent
CA 1168771
REMOTE CHALKBOARD AUTOMATIC CURSOR Abstract of the Disclosure A telautograph system allows a user at one location to write on a special surface, such as a chalkboard, and have the image appear at remote screens. Presently, a user wishing to call attention to an entry already written on the board must make a new line or must circle the item to which the remote viewers' attention is to be drawn. This procedure unduly clutters the image and a system has been devised which provides for a cursor (a graphical hand) to appear on the remote screen when the user touches the input surface at a point. The cursor also appears when the user is writing on the surface so as to call attention to the newly formed images. When pressure on the writing surface is released the cursor remains on the remote screen for a finite period and then automatically disappears, leaving the image unencumbered. When information is being removed from the input surface a graphical eraser appears at the remote screen at the site of the removed information.
386443
Torok Gabor P.
White Andrew B.
Kirby Eades Gale Baker
Western Electric Company Incorporated
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