A New Encoding Scheme for an Absolute Digital Encoder in Units of Degrees

Cyclic codes are often used in encoders to avoid possible erroneous readings. Special attention must be paid to codes where changes in certain digits are ``irregular.´´ An angular encoder that provides readings in degrees is such an example. A new cyclic encoding scheme for a degree-reading encoder is proposed in this paper. While keeping the encoding simple and efficient, the method considerably reduces the external decoding circuit requirements.