Digitizer tablet with coarse and fine position determination

Details Digitizer tablet with coarse and fine position determination Digitizer tablet with coarse and fine position determination

1983-12-22

1985-12-24

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

045608300

ABSTRACT:
A grid of electrical conductors for locating the position of a stylus utilizes a reduced number of line drivers. The grid utilizes twice as many conductors as required by conventional grids for a given resolution. The conductors are divided into coarse and fine sets which are interleaved and coextensive in the long dimension of the conductors. The coarse set is divided into subsets which consist of a predetermined number of conductors in close proximity to each other, adjacent coarse conductors being separated by only one fine conductor. The fine set is divided into a number of subsets equal to the number of conductors in each coarse subset. The number of conductors in each fine subset equals the number of coarse subsets. Each of the conductors of the fine subsets is spaced one from the other by a number of fine conductors equal to the number of coarse subsets. The conductors of each subset are connected to each other and to the output of a single driver. The position of the stylus is located by scanning the coarse conductors to determine a coarse position and by scanning the fine conductors to determine a fine position. The coarse and fine positions are combined to produce the location of the stylus.

REFERENCES:
patent: 3342935 (1967-09-01), Leifer et al.
patent: 3705956 (1972-12-01), Dertouzos
patent: 3732557 (1973-05-01), Evans et al.
patent: 3819857 (1974-06-01), Inokuchi
patent: 3975592 (1976-08-01), Carvey
patent: 3999012 (1976-12-01), Dym

Affiliated with

Also associated with

Rating

Digitizer tablet with coarse and fine position determination does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digitizer tablet with coarse and fine position determination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digitizer tablet with coarse and fine position determination will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1480661