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US 2015/0144775 A1Published application
Method for determining absolute coding of an optical coding track
AssigneeHexagon Technology Center GmbH
InventorsUrs Vokinger, Heinz Lippuner
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Abstract
The invention concerns a method for determining absolute coding represented by code elements of an optical code track, with illumination of the absolute coding with light, modulating of some of the illuminating light on code elements, determining of the absolute coding as modulated light and continuously varying modulation of the light on neighbouring code elements.
Claims21
1-15. (canceled)
A method for registering absolute coding, wherein the absolute coding is embodied by code elements of a code track and the individual code elements respectively form a main point or centroid, the method comprising:
- illuminating of the code elements with light;
- modulating of part of the illuminating light at code elements;
- registering of modulated light and generation of state signals, and
- establishing of a main point or centroid for the state signals and the positions thereof;
- wherein:
- the modulation of the light at adjacent code elements in the direction of extent of the code track is effected in a continuously varying manner.
3 more elements
Dependencies are inferred from the claim text.