Electronic pen with switching mechanism for selectively providin

Details Electronic pen with switching mechanism for selectively providin Electronic pen with switching mechanism for selectively providin

1983-07-29

1985-07-30

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

G08B 522

Patent

active

045323763

ABSTRACT:
An electronic writing pen which induces electromagnetic signals in conductors which are disposed in a writing table and are connected to digitizer circuitry is disclosed. The pen has a writing cartridge which is movable within the pen housing and includes, in one embodiment, a thin, deformable, stainless steel dome switch element which functions as an electrical contact in a normally-open switch which is utilized to provide an electrical indication of the up/down status of the pen to the digitizer and tactile feel of change of pen position to the pen user. In another embodiment, the switch includes an insulating strip having a conductive layer thereon to provide status indication with low application of force to the pen and without tactile feel.

REFERENCES:
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patent: 3751612 (1973-08-01), Hansen
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patent: 3886311 (1975-05-01), Rodgers et al.
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patent: 4034155 (1977-07-01), Muller et al.
patent: 4127752 (1978-11-01), Lowthorp
patent: 4127758 (1978-11-01), Lowthorp
patent: 4263485 (1981-04-01), Corwin
patent: 4268730 (1981-05-01), Higgins et al.

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