Stmicroelectronics S.a.

Stmicroelectronics S.r.l.

Laurent Plaza

Luc Wuidart

Michel Bardouillet

Sebastiano Battiato

Alfio Castorina

Giuseppe Messina

Guillaume Petitjean

Christel-Loïc Tisse

A method and a circuit for generating a secret quantity based on an identifier of an integrated circuit, including combining a first digital word derived from a physical parameter network with a second word stored in a non-volatile memory element.

Regeneration of a secret quantity from an intergrated circuit identifier

A method and a circuit of generation of several secret quantities by an integrated circuit according to the destination of these secret quantities, including taking into account a first digital word forming a single identifier of the integrated circuit chip and coming from a physical parameter network, and of individualizing this identifier according to the application.

Diversification of a single integrated circuit identifier

A digital image processing method includes extracting chromatic information of an image taken by an image taking device and related to a human subject; detecting visually interesting regions; and exposure correcting of the taken image by normalizing a grey scale of the taken image based on the visually interesting regions. Advantageously, the method includes recognizing areas corresponding to the skin of the subject, these areas being used as the visually interesting regions for the exposure correction step.

Digital image processing method having an exposure correction based on recognition of areas corresponding to the skin of the photographed subject

A method and a system for evaluating the definition of the image of an eye iris or the like, including approximately localizing the pupil in the image, defining, from the approximate position of the pupil, an examination window centered on this position, and applying a gradient accumulation operation to the luminance values of the pixels of the examination window, the running total being proportional to the definition score of the image.

Evaluation of the definition of an eye iris image

A method and a circuit for generating a secret quantity based on an identifier of an integrated circuit, in which a first digital word is generated from a physical parameter network, and this first word is submitted to at least one retroaction shift register, the output of the shift register forming the secret quantity.

Generation of a secret quantity based on an identifier of an integrated circuit

A method for detecting a pattern in a digital image by successive comparison of the content of current windows with the content of at least one reference window representative of the pattern, the reference window containing values of variance or standard deviation of sub-blocks of pixels of the pattern and the current windows containing values of variance or standard deviation of sub-blocks of pixels of the image, the sub-blocks being of the same size in the current and reference windows.

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Fuveau, France

Laurent Plaza