Abstract:
The present invention relates to a component protecting against electric overloads likely to occur on a conductor in series with which is placed a detection resistor. The component includes a first cathode-gate thyristor and a second anode-gate thyristor, of the gate current or forward break-over type. The anode region of the first thyristor, formed on the lower surface side, is separate from the isolating wall surrounding the thyristor and the rear surface of the isolating wall is coated with a portion of an insulating layer.
Abstract:
An integrated circuit comprises at least one differential input stage. The differential input stage includes an input circuit and a shaping circuit. The input circuit comprises a first portion and a second portion for providing two pairs of differential signals. The propagation times of the first and second circuit portions are preferably substantially identical. The shaping circuit differentiates each of the two pairs of differential signals and combines them to obtain a single binary type of signal.
Abstract:
An LED driver drives a plurality of light emitting diodes (LEDs) having first terminals connected to a common output stage and second terminals respectively receiving different, suitably rectified, phases of a sinusoidal signal. An output stage of the LED driver includes a first bipolar transistor coupled between a first supply terminal and the first terminals of the LED's. A first MOS transistor drives the base of the first bipolar transistor. The gate of the first MOS transistor is coupled to a first reference voltage. A second bipolar cascode transistor is connected in series with the first MOS transistor and biased by a second reference voltage such that the voltage across the first MOS transistor does not exceed a limit value.
Abstract:
The present invention concerns a method for the numerical scrambling by permutation of data bits in a programmable circuit comprising a control unit and at least one data bus (DBUS) to transmit data between the control unit and several memory circuits. It consists of having data on the bus either in a scrambled form or in an unscrambled form according to whether it is instructions data or not. And data in some of the memories is scrambled. The present invention also concerns a method for realising a permutation circuit.
Abstract:
A color back-side illuminated image sensor including, on the side of the thin semiconductor layer opposite to the illuminated surface, periodic thickness unevennesses forming an optic network having characteristics which make it capable of reflecting a given wavelength chosen within the range of the wavelengths of an illuminating incident beam.
Abstract:
The present disclosure is directed to a method that includes exposing a surface of a silicon substrate in a first region between first and second isolation trenches, etching the silicon substrate in the first region to form a recess between the first and second isolation trenches, and forming a base of a heterojunction bipolar transistor by selective epitaxial growth of a film comprising SiGe in the recess.
Abstract:
A method for loading a program, contained in at least a first memory, into a second memory accessible by an execution unit, in which the program is in a cyphered form in the first memory, a circuit for controlling the access to the second memory is configured from program initialization data, instructions of the program, and at least initialization data being decyphered to be transferred into the second memory after configuration of the circuit.
Abstract:
The invention relates to a method for producing an interconnection pad on a conducting element comprising an upper face and a side wall; the method being executed from a substrate at least the upper face of which is insulating; the conducting element going through at least an insulating portion of the substrate, the method being characterized in that it comprises the sequence of the following steps: a step of embossing the conducting element, a step of forming, above the upper insulating face of the substrate, a stack of layers comprising at least one electrically conducting layer and one electrically resistive layer, a step of partially removing the electrically resistive layer, a step of electrolytic growth on the portion of the electrically conducting layer so as to form at least one interconnection pad on said conducting element.
Abstract:
A variable capacitance device including: first and second transistors coupled in series by their main current nodes between first and second nodes of the device, a control node of the first transistor being adapted to receive a first control signal, and a control node of the second transistor being adapted to receive a second control signal; and control circuitry adapted to generate the first and second control signals from a selection signal.
Abstract:
The electronic device includes a first (BP) and a second (BN) terminal and electronic means coupled between said two terminals; the electronic means include at least one block (BLC) comprising an MOS transistor (TR) including a parasitic bipolar transistor, the MOS transistor having the drain (D) thereof coupled to the first terminal (BP), the source (S) thereof coupled to the second terminal (BN) and being additionally configured, in the event of a current pulse (IMP) between the two terminals, to operate in a hybrid mode including MOS operation in a subthreshold mode and operation of the parasitic bipolar transistor. The device can comprise two blocks (BLC1, BLC2) connected symmetrically between the two terminals (BP, BN) with a triac (TRC) the trigger of which is connected to the common terminal (BC) of the two blocks.