Rotation angle detecting apparatus

Details Rotation angle detecting apparatus Rotation angle detecting apparatus

1988-12-29

1991-01-08

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

341 13, G01D 534

Patent

active

049838261

ABSTRACT:
A rotation angle detecting device, that outputs a position data and a control data, each having a prescribed number of bits, as a serial data. A position-data generating circuit, that includes first detecting circuits, that are turned on or off according to the angle of rotation of a rotary shaft, outputs a position data, having a prescribed number of bits, according to the angle of rotation. A state-data generating circuit, that includes second detecting circuits, that are turned on or off according to the signals from the first detecting circuits, outputs a state data, having a prescribed number of bits, that indicate the states of operation of the first detecting circuits. The state data is transformed to a control data after passing through a data selector and a control code generating circuit. The last bit of the serial data is a parity bit.

REFERENCES:
patent: 4382250 (1983-05-01), Radaelli
patent: 4423322 (1983-12-01), Smith
patent: 4741206 (1988-05-01), Ishigaro
patent: 4767164 (1988-08-01), Yeung
patent: 4825070 (1989-04-01), Arimura

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