초록 ▼

A code track on a rotable member (e.g., a disc) defines a pseudo-random sequence of binary digits consisting of ones and noughts. The pseudo-random sequence extends continuously around the rotatable member and includes a given number of n consecutive noughts. The binary digits of the sequence are ar

A code track on a rotable member (e.g., a disc) defines a pseudo-random sequence of binary digits consisting of ones and noughts. The pseudo-random sequence extends continuously around the rotatable member and includes a given number of n consecutive noughts. The binary digits of the sequence are arranged so that each group of n adjacent digits is different from each other group of n adjacent in the pseudo-random sequence. A reading mechanism is operatively positioned relative to the code track for reading n consecutive digits of the pseudo-random sequence, wherein each n consecutive digits of the pseudo-random sequence define a position of the rotatable member.

대표청구항 ▼

Apparatus for indicating the position of a rotatable member, comprising: a rotatable member; a code track disposed on said rotatable member and defining a pseudo-random sequence of binary digits consisting of ones and noughts and extending continuously around said rotatable member, the pseudo-random

Apparatus for indicating the position of a rotatable member, comprising: a rotatable member; a code track disposed on said rotatable member and defining a pseudo-random sequence of binary digits consisting of ones and noughts and extending continuously around said rotatable member, the pseudo-random sequence including a given number of n consecutive noughts, and the digits of the sequence being arranged so that each group of n adjacent digits is different from each other group of n adjacent digits in the pseudo-random sequence; and reading means operatively positioned relative to said code track for reading n consecutive digits of the pseudo-random sequence, each n consecutive digits of the pseudo-random sequence defining a position of said member.