Thermally readable surface characterization arrangement

Details Thermally readable surface characterization arrangement Thermally readable surface characterization arrangement

G - Physics

06

K

352/53

G06K 19/08 (2006.01) G09C 5/00 (2006.01)

Patent

CA 1293324

Abstract of the Disclosure A thermally readable encoding arrangement can be scanned with a temperature radiation sensor. The encoding arrangement has alternating regions which differ in thermal conductivity, capacity or emissivity characteristics. Heat is either supplied or withdrawn from the encoded region after which the region is sequentially scanned along a path using a radiation detector to evaluate the temperature differences which arise because of the characteristics. Various forms of temperature activation and encoding structures are disclosed.

539977

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