Encoder

Details Encoder Encoder

1988-03-21

1990-06-12

Shoop, Jr., William M.

Coded data generation or conversion

Digital pattern reading type converter

Optical

341 2, H03M 122

Patent

active

049336738

ABSTRACT:
An encoder for detecting the state of movement of a scale having a plurality of tracks consisting of arranged predetermined codes comprises first detecting device for reading the codes of the plurality of tracks and detecting data comprising a row of the codes, and second detecting device for detecting the state of movement of the codes of a particular track plurality of tracks to obtain more detailed data. The state of movement of the scale is detected on the basis of the signals from the first and second detecting devices.

REFERENCES:
patent: 4146873 (1979-03-01), Yamanaka et al.
patent: 4301447 (1981-11-01), Funk et al.
patent: 4465928 (1984-08-01), Breslow
patent: 4572952 (1986-02-01), March
patent: 4588982 (1986-05-01), Goodwin
patent: 4621256 (1986-11-01), Rusk

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