Abstract:
The invention relates to an electromagnetic transponder (20) comprising: a parallel oscillatory circuit (L2, C2) for extracting a supply signal from a radiated field; a plurality of legs which are arranged in parallel on the oscillatory circuit and respectively comprise a programmable resistance (Rpi) and an interrupter (Mi); and a cyclic control element (27) for successively closing the interrupters. Each resistance embodies an element for storing part of the code stored in the transponder.
Abstract:
The invention relates to an integrated cell (1) for the extraction of a binary value based on a difference in the values between two resistors (Rd, Rg), comprising: means of connection for binary reading of the sign of the difference in values between said resistors, in addition to means of connection for modification of the value of one of said resistors in order to make said sign of the difference in values invariable.
Abstract:
The invention concerns an identification method and circuit (1) of the network type of parameters contained in an integrated circuit chip, comprising a single input terminal (2) for applying a signal (E) triggering an identification, the output terminals (31, 32, , 3i-1, 3i , , 3n-1, 3n) adapted to deliver a binary identifying code (B1, B2, Bi-1, Bi, , Bn-1, Bn), first electrical paths (P1, P2, , Pi, , Pn), individually connecting said input terminal to each output terminal, and means (4, 51, 52, , 5i, , 5n) for simultaneously integrating the binary states present in output of the electrical paths, each path inputting a delay sensitive to technological dispersions and/or of the integrated circuit fabrication method.
Abstract:
The invention relates to an integrated cell (1) for the extraction of a binary value based on a difference in the values between two resistors (Rd, Rg), comprising: means of connection for binary reading of the sign of the difference in values between said resistors, in addition to means of connection for modification of the value of one of said resistors in order to make said sign of the difference in values invariable.
Abstract:
The invention relates to a method and device for the irreversible reduction of the value of an integrated polycrystalline silicon resistor. The inventive method consists in temporarily subjecting the resistor to a stress current which is greater than a current (Im) for which the value of the resistor is maximum.
Abstract:
The invention relates to a method and an integrated cell (1) for extracting a binary value from a propagation of a trigger signal front in two electrical paths comprising two parallel legs located between two voltage application terminals (2, 3). Said legs are respectively provided with the following elements mounted in series: an electrical path differentiation resistance (Rg, Rd); a readout transistor (MNld, MNlg); and a selection transistor (MN2d, MN2g). The central point between the resistance and the readout transistor of each leg defines an outlet terminal (Q, NQ) of the cell, and the readout transistor gate of each leg is connected to the output terminal of the other leg.
Abstract:
The invention concerns an antenna generating an electromagnetic field for an electromagnetic transponder, and a terminal provided with such an antenna, comprising a first inductive element (Lp) designed to be connected to two terminals (3, 4) applying an energizing voltage (Vg), and a parallel resonant circuit (21) coupled with the first inductive element.