Thomson-csf

Jean E Picquendar

Roger B Gonin

Jean Claude Dubois

Eugene Duda

Sylvain Fontanes

Daniel Forster

Michel Marchal

Etienne Alizon

The demodulator comprises two parallel channels which have in each channel:

FSK Demodulator for frequency-modulation modem

Two analog filters of the second order are arranged in series with a transverse charge transfer filter upstream and downstream of the latter. The analog filters are switched capacitor filters having an amplifier and a network of capacitors and MOS transistors. The filtering device is entirely integrated onto the same semiconductor substrate.

Filtering device using the transfer of electrical charges into a

An improved process for forming an embossed pattern through the use of a writing concentrated beam opening holes in a film capable of undergoing residue free evaporation. A layer of photoresist is overlayed with the film and upon being exposed and processed the layer supplies the prospective embossed pattern.

Method of making an embossed pattern on an information bearing substrate

As all the weighting coefficients of the filter are positive, a weighted charge quantity is collected by a line beneath one of the elementary electrodes of each weighting electrode. A charge reading device is coupled to the line and supplies an electrical signal which is transmitted to the negative input of a differential amplifier, which receives the sampled input voltage of the filter at its positive input. The electrical output signal of the filter is taken, under low impedance, at the output of the differential amplifier, said signal being reinjected at the input of the filter by the injecting means.

Charge transfer recursive filter

The invention relates to ramp generators by which it is possible to obtain an electrical voltage which represents a ramp of a required form in dependence upon a given parameter. The invention comprises using a charge transfer device in which the charge transferred is measured in dependence upon a parameter associated with the weighting of the electrodes of the device. This weighting is fixed according to the required form of the ramp.

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Paris, France

Jean E Picquendar