Encoder device

Details Encoder device Encoder device

1989-01-31

1990-08-14

Shoop, Jr., William M.

Coded data generation or conversion

Digital pattern reading type converter

Brush and contacts or conductive pattern

341 1, 35428911, 35428912, H03M 122

Patent

active

049490877

ABSTRACT:
An encoder device comprises a first resistor having one end connected to a first contact piece and the other end connected to an A/D conversion input terminal, a second resistor having one end connected to a second contact piece and the other end connected to the other end of the first resistor and having a different resistance value from that of the latter, a first pattern electrode to which a first potential is applied, a second pattern electrode to which a second potential is applied, and a non-electrode zone on which neither of said first and second pattern electrodes is provided. With such arrangement, when first and second contact pieces slidingly move while in contact with one of said first and second pattern electrodes as well as a non-electrode zone, a voltage is produced at the A/D conversion input terminal which voltage is variable in accordance with combinations of sliding contacts between the set of the first and second contact pieces and the set of the first and second pattern electrodes as well as a non-electrode zone.

REFERENCES:
patent: 3553683 (1971-01-01), Simoneau et al.
patent: 4560267 (1985-12-01), Nakai et al.

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