Angle coder with variable input angle

Details Angle coder with variable input angle Angle coder with variable input angle

1978-10-17

1980-12-16

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

250231SE, 340347M, 356141, G08C 906, H03K 1302

Patent

active

042400694

ABSTRACT:
An electronic angular coder for theodolites or the like, comprising a rotng disk bearing a series of engraved radial markings, a stationary detector, and a mobile detector. An approximate measure of the offset angle between a stationary detector and a mobile detector is accomplished by counting the markings passing in front of the heads. Fine measures of the shift in phase between the passage of a marking in front of the mobile detector and the fixed detector are also obtained.

REFERENCES:
patent: 2901170 (1959-08-01), Poole
patent: 3930201 (1975-12-01), Ackermann et al.
patent: 4064504 (1977-12-01), Lepetit et al.

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