Abstract:
The invention relates to an electronic charge retention circuit for time measurement, implanted in an array of EEPROM memory cells, each comprising a selection transistor in series with a floating-gate transistor, the circuit comprising, on any one row of memory cells: a first subassembly of at least a first cell (C1), the thickness of the dielectric of the tunnel window of the floating-gate transistor of which is less than that of the other cells; a second subassembly of at least a second cell (C2), the drain and source of the floating-gate transistor of which are interconnected; a third subassembly of at least a third cell (7); and a fourth subassembly of at least a fourth cell (6), the tunnel window of which is omitted, the respective floating gates of the transistors of the cells of the four subassemblies being interconnected.
Abstract:
The invention relates to a method of controlling an electronic charge retention circuit for time measurement, comprising at least a first capacitive element (C1), the dielectric of which has a leakage, and at least a second capacitive element (C2), the dielectric of which has a higher capacitance than the first, the two elements having a common electrode defining a floating node (F) that can be connected to an element (5) for measuring its residual charge, in which a charge retention period is programmed or initialized by injecting or extracting charges via the first element.
Abstract:
The invention relates to a method and a circuit for controlling an energy recovery stage of a plasma screen comprising a resonant circuit of at least one inductive element (L) and of a capacitive element (Cs), in which the capacitive element is precharged halfway with a supply voltage (Vs) of the screen.
Abstract:
The invention concerns a DC/DC converter-regulator designed to connect a fuel cell (14) to a filter (17) adapted to be connected to means for electrochemical storage (11) of electric power during a charging operation of the storage means. The converter-regulator comprises means (22, 28, 30) adapted to maintain, during the charging operation, the voltage (VFC) at the terminals of the fuel cell, at a given operating voltage.
Abstract:
The invention concerns a method for thinning a first semiconductor wafer (1) from a first side (12), which consists in applying, on the second side of the first wafer, a second wafer (3) with an interposed photoresist layer (2).
Abstract:
The invention relates to a method and feed circuit for an asynchronous calculation element (1) of an integrated circuit, wherein the instantaneous power supply of the calculation element is randomly varied .
Abstract:
The invention concerns a controllable set of current sources (6') comprising several output terminals (Si), a first transistor (T1i') associated with each first output terminal, the current (li) on each first output terminal depending on the current passing through the first transistor, and control means (8) designed, in response to a predetermined control voltage variation (VAB), to make each first transistor (T1i') gradually conductive then gradually non-conductive, wherein the first transistors are MOS transistors, and wherein each first output terminal (Si) is associated with a current mirror formed by MOS transistors (T2i, T3i), said current mirror supplying to the first output terminal a current dependent on the current passing through the first transistor.
Abstract:
The invention concerns a device for processing a digital image comprising at least one contour region, including sharpness processing of the contour region. The sharpness processing includes converting data of the level of pixels of the contour zone into initial main data (step 2), ranging between a minimum value, for example 0 and a main value based on the amplitude of the contour, a sharpness sub-processing performed on said initial main data so as to obtain final main data (steps 3 to 10), and converting the final main data into final data of levels (step 11).
Abstract:
The invention concerns the generation of a chip identifier (2) bearing at least one integrated circuit, which consists in providing a cutout of least one conductive path (4) by cutting the chip, the position of the cutting line (3) relative to the chip conditioning the identifier.
Abstract:
The invention concerns a method for inserting synchronization marks (200) in a standardized stream of compressed and encrypted data, which consists in encrypting bit by bit one part at least of a stream of compressed data, by block encryption, and which consists in inserting a synchronization mark in the stream only after the number of encrypted bits reaches or exceeds the number of bits of the encryption block.