摘要:
The invention relates to an RFID tag comprising multifrequency electromagnetic resonators carried by a dielectric substrate according to a configuration capable of providing coded data, associable to said tag, having a high number of bits. The invention further provides a reader of RFID tag and a relative coding method wherein data are coded through a simultaneous reading of said electromagnetic resonators with a relative motion of said reader according to preferential directions with respect to the tag itself.
摘要:
Holograms and diffraction gratings are described wherein the presence of a 'key-colour' (Magenta) permits an observer to identify the position where all the other colours of the hologram in question can be univocally determined. Two set of spectra (60 and 70) are provided such that at a predetermined angle (13) a reference beam of incident white-light (10) illuminating the hologram or diffractin grating composition will cause the observer (11) to see the color 'Magenta' which is to be used as a reference 'key-colour'.
摘要:
The present invention relates to a method for the production of shapings on the circumference of the die, by synchronizing the operations of cold hobbing, and CNC milling and turning. This method involves the construction, at the outside of the effigy of the working punch, of reference systems (in negative) and a groove (in negative) along a generatrix thereof. The working punch slides in a retaining sleeve provided with a tooth (positive) such as to perfectly matching with said groove. Both the working punch and the retaining sleeve, once keyed to one another are positioned along a reference axis of the press and in the upper position to the tip to be punched. Once the hobbing occurred, the resulting "barrel tip" of the die presents on the effigy the reference systems (positive) in the neighborhood of the effigy. On the spindle of the CNC lathe, a coupling element provided with reference counter-reliefs (in negative) is keyed in axis with the lathe itself. Therefore, the operator of the CNC lathe ensures the flatness of the "barrel tip" by engaging the reference systems while the axiality is ensured at the closure of the terminals of the spindle, and this allows the working in registry of the die.
摘要:
A method of manufacturing an electronic identifying document, the latter of the type comprising a plastic medium bearing identification data in physical form and a microprocessor bearing the same identification data in electronic format, which method comprises the steps of: - handling a data sequence for the physical customization of a matrix of elements on a data sheet and for the electronic customization of a matrix of electronic storage means assembled in an inlay sheet; - sending the customization data simultaneously - or however in almost such logic sequence - to several writing devices of the physical medium and to several devices for coding the electronic storage means; - performing the data writing on the data sheet and on the inlay sheet; and - assembling the data sheet bearing identification data in graphic form with the inlay sheet bearing identification data in electronic format, before the step of manufacturing the document ( Figures 1 and 2 ).
摘要:
A reading apparatus (10) of an optical data carrier (1) bearing a first (2) and a second (3) diffractive structure obtained on overlapped levels, wherein the second structure (3) bears an information diffractive code and the first structure (2) bears a control diffractive code apt to act as a read key for said information code, the construction being such that, when the data carrier (1) is exposed to a substantially monochromatic beam of electromagnetic waves, each structure deviates such incident beam into one or more diffracted beams spatially independent from the one or more diffracted beams originated by the other structure, which apparatus (10) comprises: - An emitting unit (11), apt to emit a substantially monochromatic beam of electromagnetic waves apt to be deviated by the diffractive structures; - A first detecting unit (12), for detecting the control code of the first diffractive structure (2) of the data carrier (1), comprising first detecting means; - A second detecting unit (13), for detecting the information code of the other diffractive structure (3) of the data carrier (1), comprising second detecting means arranged at a position distinct from that of the first detecting means; - a processing unit (15), apt to verify the authenticity of the data carrier (1) according to the detections of said detecting units (12, 13); and - means (150) selectively programmable with at least one position parameter related to a linear and/or angular position of the first diffractive structure (2) and at least one application parameter representative of the specific application of the data carrier (1) bearing the diffractive structures (2, 3) ( Fig. 2 ).
摘要:
The transparent safety film is made up of a thin self-adhesive structure, comprising reflecting metal holograms in limited areas, perfectly visible and suitably distributed, allowing the contents on the surface of the document or object to be protected to be seen. The manufacturing process is also described.
摘要:
Holograms and diffraction gratings are described wherein the presence of a 'key-colour' (Magenta) permits an observer to identify the position where all the other colours of the hologram in question can be univocally determined. Two set of spectra (60 and 70) are provided such that at a predetermined angle (13) a reference beam of incident white-light (10) illuminating the hologram or diffractin grating composition will cause the observer (11) to see the color 'Magenta' which is to be used as a reference 'key-colour'.
摘要:
A coin blank, particularly for minting of coins and the like, is formed by an external element (1) of metal or metal alloy having a central aperture, on the edge surface (4) of which are cut perimetrally a series of spaced grooves (5), and by an internal element (6), of metal or metal alloy different from the former, on the edge surface of which is formed a perimetral ridge (8,9), said external and internal elements being coupled inseparably during the minting operation through the plastic flow of the material from said perimetral ridge (8,9) into said grooves (5) in said external element (1) and through the firm fitting of the material from said ridge into the portions of the edge surface of said central aperture in said external element (6), provided between adjacent grooves (5).