Digital switch with analog feel

Details Digital switch with analog feel Digital switch with analog feel

1996-08-30

1998-06-30

Horabik, Michael

Coded data generation or conversion

Bodily actuated code generator

With rotary dial

200 37A, 341 26, 345184, 4551701, H03K 1794, H03M 1100

Patent

active

057740755

ABSTRACT:
A manually controllable switch provides a user with an "analog feeling" for controlling digital electronics. A plurality of first electrical conducting portions are alternately arranged with a plurality of second electrical conducting portions. Physical spacing between electrical conducting portions is proportionally and symmetrically varied to provide a sequence of logical states upon movement of the manually adjustable control knob. An electrical contact on the control knob moves into and out of engagement with the electrical conducting portions. Contact between the contacting portion and the conducting portions causes changes in logic state as recognized by a microprocessor or dedicated circuitry coupled to the conducting portions. The microprocessor or dedicated circuitry recognizes specific sequences of change in logic state as indicating manual movement of the control knob.

REFERENCES:
patent: 4443670 (1984-04-01), Nakamura et al.
patent: 4568927 (1986-02-01), Fowler
patent: 4697057 (1987-09-01), Fowler
patent: 4755646 (1988-07-01), Fowler
patent: 4758693 (1988-07-01), Hoffman
patent: 4777483 (1988-10-01), Fowler
patent: 4876416 (1989-10-01), Frantz et al.
patent: 4970512 (1990-11-01), Wood
patent: 5128661 (1992-07-01), Fowler
International Search Report on International Application No. PCT/US97/14453.
Article from Electronic Engineering (Feb. 1964-pp. 72-79) on "A Digital Shaft Position Indicator" (XP 002047070) by S. G. Smith, B.Sc., and C. J. U. Roberts.

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