WHAT IS THE ABSOLUTE ENCODER CODE WHEEL?！

In absolute encoders transparent segments alternate with opaque ones along several circular rings, according to a pattern that provides the position in a binary code configuration. To avoid encoding errors, a variant of the natural binary code is employed, the Gray code, which has the distinctive characteristic to vary only one binary digit between a code and the following one, ensuring a higher reliability both in code generation and decoding.

2 bit disc with binary code	2 bit disc with Gray code

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