Surface texture reading access checking system
AssigneesCommunaute Europeenne de l'Energie Atomique (Euratom), Association pour la Promotion de la Technologie (Promotech)
InventorsBertrand Causse D'Agraives, Janny Mathieu, Patrick Jamar
Life of this patent
Estimating the term…
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.
Claims13
An access control system comprising:
- plural authorized support objects each having a relief surface texture;
- a reception block able to receive said support objects;
- a contact transducer provided in said reception block, said transducer being able to translate the relief surface texture into an electrical signal;
- a random access memory having plural memory locations, said random access memory being able to be connected to said transducer when an authorized support object is introduced into said reception block and to receive and store in one of said memory locations the corresponding electrical signal delivered by the transducer;
- a comparison circuit connected between the memory and the transducer, said comparison circuit determining the degree of coincidence between the signal supplied by the transducer when a random support object is introduced into the reception block and each of said signals stored in the memory locations of the memory;
- and
- a circuit connected to said comparison circuit and supplying, when a predetermined degree of coincidence is adequate, a signal initiating an access control action.
Dependencies are inferred from the claim text.