Writing pad

Details Writing pad Writing pad

G - Physics

06

K

340/135.1

G06K 11/06 (2006.01) G06F 3/033 (2006.01)

Patent

CA 1264077

Writing Pad Abstract of the Disclosure A writing pad in which a grid of electrical elements defines an array of discrete locations on the writing surface with a density of at least 100 x 50 = 5000 locations per square inch, and digital circuitry is connected to the grid to determine the locations at which writing stimuli are being received. In other aspects, circuitry is used to identify the upper and lower boundaries along one dimension of the writing surface, of a local region at which writing stimuli are being received; the writing surface is scanned to identify the coordinate value along one dimension of a point at which writing stimuli are being received, by scanning respectively different predetermined portions of the writing surface along that one dimension, all of the portions being scanned simultaneously; a local zone is defined in the vicinity of an identified point of touching, and limits the scanning to that local zone and a portion of the writing surface includes key zones and a particular digital symbol is generated in response to writing stimuli being received at any of the locations corresponding to one of the key zones.

503621

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