Abstract:
An imaging optical module is designed to be placed in front of an optical image sensor of a semiconductor component. The module includes at least one element which has a refractive index that varies between its optical axis and its periphery, over at least an annular part and/or over its central part. The element may be a tablet in front of the semiconductor sensor or a lens in front of the semiconductor sensor. The direction of variation in refractive index may be oppositely oriented with respect to the table and lens.
Abstract:
An integrated circuit includes at least one photodiode of the floating substrate type which is associated with a read transistor. The photodiode is formed from a buried layer lying beneath the floating substrate and an upper layer lying on the floating substrate. The upper layer incorporates the source and drain regions of the read transistor. The source and drain regions are produced on either side of the gate of the read transistor. An isolating trench is located alongside the source region and extends from the upper surface of the upper layer down to below the buried layer, so as to isolate the source region from said buried layer.
Abstract:
A device and a method of deinterlacing a sequence of images from an interlaced format to a progressive format. The sequence of images being composed of successive frames. A plurality of pixels of missing lines of a current frame to be completed, an evaluation of the values of these pixels according to a spatially consistent order. The evaluation comprises, for each pixel of the plurality of pixels, estimating a direction of interpolation, spatial interpolation according to the estimated direction of interpolation. According to the invention, the estimation step comprises, for at least one current pixel of the plurality of pixels, calculating a score for at least two directions, and selecting the direction of interpolation on the basis of the calculated scores and of the estimated direction of interpolation for a distinct pixel situated in the neighborhood of the current pixel.
Abstract:
Data stored in a first memory are processed by a processing device comprising a processor, a second memory, and an interface device interfacing the processing of data from the first memory. In the interface device, in order to facilitate transfer of data from the first memory where data are stored in a first data format to the second memory where data are stored in a second data format, a first group of data is received from the first memory, with said group ordered into a sequence corresponding to the first data format. Then at least one second group of data is obtained by ordering said data in the first group into a new sequence which is a function of the first and second data formats. The second group of data is stored in the second memory.
Abstract:
A power management unit for a battery-operated electronic device having a bus interface for the interconnection with another electronic device, the power management unit including an electric energy storage element coupled between a battery of the battery-operated electronic device and a voltage supply line of the bus interface, the electric energy storage element being operable to charge/discharge electric energy; a drive circuitry arranged to control a charge/discharge of the electric energy storage element. The drive circuitry is operable to cause an electric power supplied by the other electronic device through the voltage supply line to re-charge the battery; or, in case the other electronic device does not supply electric power, cause the battery supply electric power to the other electronic device through the voltage supply line. The power management unit is particularly adapted for battery-operated, mobile USB OTG devices.
Abstract:
An integrated circuit including a structure of inductances on a semiconductor substrate, intended for operating at frequencies greater than several hundreds of MHz, including a first inductance formed by a conductive track and having first and second terminals respectively connected to each of the two ends of the conductive track, including a second inductance formed by the conductive track between the second terminal and any intermediary point of the conductive track connected to a third terminal, said second and third terminals forming the two terminals of the second inductance, and means for setting the third terminal to high impedance when the first inductance is used.
Abstract:
An electronic circuit includes a group of devices which facilitate scan testing of at least one part of the electronic circuit. Those devices include a scan test device. The circuit further includes a state machine which operates to transfer data from an input pin of the circuit which is dedicated to the state machine to the devices relating to scan testing. The state machine supports a plurality of data transfer protocols. The choice of the protocol to be used is made as a function of a signal received on the input pin. Responsive to an input pin signal, the state machine enters an operational mode wherein scan test programming data is serially received at the input pin and communicated to the devices which facilitate scan testing. More specifically, the scan test programming data is serially communicated to a scan test register, where the data is output in parallel to the scan test device.
Abstract:
A method and a circuit for detecting a possible loss of the equiprobable character of a first output bit flow originating from at least one first normalization element of an initial bit flow, consisting of submitting the initial flow to at least one second normalization element of a nature different from the first one, pairing, bit to bit, the flows originating from the two elements, and checking the equidistribution of the different state pairs.
Abstract:
The invention relates to a method for the COFDM demodulation of a signal received from a transmission channel. The inventive method includes performing the fast Fourier transform of the signal received in a window corresponding to a symbol, each symbol being associated with a guard time reproducing one part of the symbol; supplying a set of estimated values for the module impulse response; determining coefficients, each coefficient being obtained from the product of the aforementioned set and a filtering function (FE) for a determined relative position of the filtering function in relation to the set; determining the maximum coefficient and the corresponding relative position; and positioning the window as a function of the relative position, the filtering function including a central part (LMAX) which has a constant amplitude and a duration equal to the duration of the guard time and which is surrounded by non-zero decreasing edges.
Abstract:
A method for reading of the state of a non-volatile memory element including conditioning the frequency of a first oscillator to the state of this element, and comparing the frequency of the first oscillator with the predetermined frequency of a second oscillator, selected between two possible frequency values for the first oscillator, according to the state of the storage element.