ENCODER DEVICE AND METHOD OF USE OF IT

摘要

An encoder device is characterized by comprising a code plate (1) which is divided into a plurality of blocks (N1 ..., Np, ..., Nn-1, Nn) along the longitudinal direction, in each of which is encoded address information consisting of code sequences arranged in a row along the longitudinal direction and representing the absolute address of the respective blocks; a line sensor (4) having a plurality of sensor elements arranged in a row for reading the information stored in the code plate; and means (6) for processing an electric output signal from the line sensor (4) to read the block address.