Telegraphy – Systems – Position coordinate determination for writing
Patent
1989-11-14
1991-04-02
Schreyer, Stafford D.
Telegraphy
Systems
Position coordinate determination for writing
G08C 2100
Patent
active
050048724
ABSTRACT:
A digitizer tablet using a pressure-sensitive pointing device preferably containing a linear transducer is provided with the means to convert linear pressure signals to logarithmically-related output counts. The conversion means is programmable to allow outputting of a logarithmically or a linearly related count for use by an application program.
REFERENCES:
patent: 4786764 (1988-11-01), Padula et al.
patent: 4806707 (1989-02-01), Landmeier
Schreyer Stafford D.
Summagraphics Corporation
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