Communications: electrical – Continuously variable indicating – With meter reading
Patent
1988-10-05
1991-03-12
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
235382, G06F 704, G06K 500
Patent
active
RE0335533
ABSTRACT:
Surface texture reading access checking system. The identification information attached to each support object serving as a key is constituted by the texture of a surface portion of said object. A reader reads this information and communicates it to the processing means, which carry out a comparison between the signal read and recorded signals. Application to the production of locks or access checking means for data processing, telematic, banking and similar systems.
REFERENCES:
patent: 3637990 (1972-01-01), Bayha et al.
patent: 4218674 (1980-08-01), Brosow
patent: 4298792 (1981-11-01), Granholm et al.
patent: 4519228 (1985-05-01), Sornes
patent: 4568936 (1986-02-01), Goldman
patent: 4721956 (1988-01-01), Demster
patent: 4749847 (1988-06-01), Despres
"Surface Topography, A Remarkable Method for the Identification of Seals or Structures in General", B. C. D'Agraives, pp. 403-409, 5/1981.
D'Agraives Bertrand C.
Jamar Patrick
Mathieu Janny
Euratom, Communaute Europeenne de l'Energie Atomique
Horabik Michael
Promotech, Association pour la Promotion de la Technologie
Yusko Donald J.
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