Title:
MEASURING ENCODER
Document Type and Number:
Japanese Patent JPS5827013
Kind Code:
A
Abstract:
PURPOSE: To measure the sizes which are smaller than a recorded scale in digital quantity, by arranging a pluraity of detectors at different specified pitches.
CONSTITUTION: N pieces of detectors 3, 4..., each of which is constituted by two detecting elements A and B, are sequentially shifted at magnetizing pitches 1/2N, 1/2N×2...1/2N×(N-1) and arranged on a magnetizing medium 1. Then the interval of the measurement based on detecting pulse waveforms C0, C1... in these detectors 3, 4... becomes the magnetizing pitch 1/2N. Therefore the sizes, which are smaller than the recorded scale can be digitally measured.
Inventors:
TAKEUCHI KENGO
NOZAKI WATARU
NOZAKI WATARU
Application Number:
JP12520681A
Publication Date:
February 17, 1983
Filing Date:
August 12, 1981
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G01D5/245; G01D5/244; (IPC1-7): G01D5/245
Domestic Patent References:
| JPS5559314A | 1980-05-02 | |||
| JPS4989580A | 1974-08-27 | |||
| JPS52121356A | 1977-10-12 |
Attorney, Agent or Firm:
Katsuo Ogawa (1 person outside)