Abstract:
Device for processing an analogue signal, comprising an analogue-digital converter with a pipelined architecture having an offset, and compensation means configured to compensate for the said offset, the said compensation means comprising digital correction means configured to correct the integer portion of the offset based on the digital signal delivered by the analogue-digital converter, and analogue correction means included in the last stage of the analogue-digital converter and configured to correct the decimal portion of the offset.
Abstract:
The electronic device comprises a first terminal and a second terminal, a buffer connected between the first terminal and the second terminal and comprising a signal input, and means for protecting against electrostatic discharges likely to occur across at least a pair of nodes of the buffer. The device comprises at least one integrated structure connected between the two nodes and said signal input, containing at least one MOS transistor and forming both said protection means and at least a part of said buffer.
Abstract:
An electronic device includes N inputs to receive R input data, R being able to take values from 1 to N, and N outputs. A configurable shift circuit is coupled between the N inputs and N outputs and has a cascade of shift stages, each shift stage comprising at least N controllable multiplexers. Each multiplexer includes first and second elementary inputs respectively coupled to a first input and a second input taken from among the N inputs so as to, on command, not shift a data item present on the first elementary input and shift a data item present on the second elementary input by an elementary shift value dependent on a rank of the shift stage, a direction of the shift being identical for each multiplexer. Control circuitry controls the multiplexers to deliver the R input data on R outputs.
Abstract:
An electromagnetic transponder and a method for controlling by pulse trains a switch for modulating the load of this transponder in an electromagnetic field from which it extracts its power supply, the duty ratio of the pulses being controlled according to the transponder supply voltage.
Abstract:
A method of resetting a photosite is disclosed. Photogenerated charges accumulated in the photosite are reset by recombining the photogenerated charges with charges of opposite polarity.
Abstract:
A controlled oscillator includes, connected in parallel, a capacitor configured to be tuneable based upon a first signal, an inductor, and an active impedance. The active impedance is formed by a pair of cross-coupled transistors connected so as to produce a negative resistive component at the terminals of the active impedance. Circuitry produces a degeneracy tuneable by a second signal in the cross-coupled pair, such that the cross-coupled pair produces a capacitive component tuneable based upon the second signal at the terminals of the active impedance.
Abstract:
A cell library intended to be used to form an integrated circuit, this library defining a first cell including a first MOS transistor of minimum dimensions, and a second cell including a second MOS transistor of lower leakage current, wherein the second cell takes up the same surface area as the first cell, and the second MOS transistor has a gate of same length as the gate of the first MOS transistor across at least a first width in its central portion, and of greater length across at least a second width on either side of the central portion.
Abstract:
A motion estimation method and device are provided for processing images to be inserted, between a preceding original image and a following original image, into a sequence of images. Each image is divided into pixel blocks associated with motion vectors. For a current block of an image being processed, motion vectors associated with blocks of the image being processed and/or associated with blocks of a processed image are selected. Candidate vectors are generated from selected motion vectors. An error is calculated for each candidate vector. A penalty is determined for a subset of candidate vectors on the basis of the values of the pixels of the pixel block in the preceding original image from which the candidate motion vector points to the current block and/or on the basis of the values of the pixels of the pixel block in the following original image to which the candidate motion vector points from the current block.
Abstract:
A method for protecting an electronic circuit having at least one output against external radiation includes functionally duplicating the electronic circuit and linking the outputs of the electronic circuit and the duplicated electronic circuit to homologous inputs of at least functionally equivalent combinatorial or sequential elements. The homologous outputs of all the combinatorial or sequential elements are linked together. The electronic circuit can be duplicated multiple times.
Abstract:
A memory is secured against an error injection during the reading of a datum. The memory includes: means for reading a reference datum in the memory during a phase of reading a datum stored in the memory; means for comparing the reference datum read with an expected value; and means for generating an error signal if the datum read is different from the expected value. Application is provided particularly but not exclusively to the protection of memories integrated into smart cards.