DEVICE FOR THE COUNTING OF CHIP CARDS CONTAINED IN A BATCH

In order to count chip cards when they are manufactured, it is chosen to present these chip cards in lots, edgewise, in the field of an X-radiation. A measurement is made of the differential image of attenuation of the X-radiation due to the passage of this X-radiation, on the one hand through the p...

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Bibliographic Details
Main Authors JUTARD; ALAIN, REDARCE; HERVE, DUPRE; FRANCOIS, BETEMPS; MAURICE
Format Patent
LanguageEnglish
Published 10.11.1992
Subjects
CALCULATING
COMPUTING
COUNTING
COUNTING MECHANISMS
COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:In order to count chip cards when they are manufactured, it is chosen to present these chip cards in lots, edgewise, in the field of an X-radiation. A measurement is made of the differential image of attenuation of the X-radiation due to the passage of this X-radiation, on the one hand through the plastic card structure, which is relatively transparent to the X-radiation, and on the other hand through the metallic connection parts of the chips. In the radiological absorption image obtained, a count is made of the number of transitions of the absorption signal. It is shown that the reliability of the counting is greatly improved, as is the security of manipulation.
Bibliography:Application Number: US19910735289