Mechanic encoder having single conductors ring

Details Mechanic encoder having single conductors ring Mechanic encoder having single conductors ring

1997-10-22

1999-11-02

Shalwala, Bipin H.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345163, 345157, 345167, G09G 508

Patent

active

059779535

ABSTRACT:
A mechanic encoder having a single conductors ring is provided. The arrangement between the a first and a second conducting fingers and the conductors ring are specially arranged such that the sequential signal pairs can be accurately and precisely generated, i.e. the resolution is accordingly increased. The conductors ring is configured by a plurality of conducting plates which are aligned with the center of the encoding wheel or in an alternative, those conducting plates are offset from the center of the center of the encoding wheel. The conductors ring is configured with a plurality of conducting portions and insulating portions which are alternatively contacted with the conducting fingers. The encoding wheel is powered by a third conducting finger and a sequential signal pairs can be detected from the output of the first and second conducting fingers. The signal pairs can be further processed and recognized to determine the rotation of the encoding wheel. Even a tiny movement or rotation of the encoding wheel, a signal pairs can be detected. By this arrangement, the resolution is increased.

REFERENCES:
patent: 5027109 (1991-06-01), Donovan et al.
patent: 5168268 (1992-12-01), Levy
patent: 5555004 (1996-09-01), Ono et al.
patent: 5805141 (1998-09-01), Hsu

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