Digital coding of angles

Details Digital coding of angles Digital coding of angles

H - Electricity

03

M

354/77, 340/136.

H03M 1/00 (2006.01)

Patent

CA 1060585

ABSTRACT In a digital angle coder, a revolving disc bears a first series of marks regularly spaced around its axis, capable of being read by two diametrically-opposed fixed heads, and a second series of marks equal in number to the first, regularly spaced around the axis and capable of being read by two diametrically opposed movable heads. Each of the heads includes, for example, a grid repro- ducing a portion of the series of marks, a photo-emission element and a photo-receiving element. A first auxiliary mark may be read by a fixed auxiliary head and a second auxiliary mark may be read by a movable auxiliary head. -?-

223046

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