Other

Gay Freres S. A.

Gay Freres Vente Et Exportation S.a.

Njc Innovations Sarl

Valtac, Alex Beaud

Gay Freres Vente Et Exportation

Jean Claude Berney

The invention concerns a chip card associated with RF transmission means. Said chip card comprises on each surface high permeability zones arranged so as to concentrate the flux generated by the RF transmission means onto a sensor coil. To ensure the proper functioning of the system, the transmission means generate flux lines parallel to the surface of the chip card.

Contactless chip card associated with RF transmission means

The invention relates to a read or read-write label of an optical nature comprising a nonvolatile memory with its control circuit, a control or checking circuit for the charge of a buffer capacitor and a sequence generator making it possible to supply to the outside optical signal sequences in harmony with the states of the different circuits and analyze the optical signals coming from the outside.

Opto-electronic tag having an internal time base

Device for associating test tube samples with electronic labels for

Electronic label for optical reading/writing

Electronic integrated circuit label

A step motor in a horological device is connected in a control circuit such that the motor is fed by a battery under the control of a reference oscillator, a frequency divider, a power stage and a shaper. The power stage comprises MOS power transistors exclusively of N-MOS type connected in pairs such that one transistor has its emitter connected to one terminal of the battery and its collector connected to one terminal of the motor coil and to the emitter of the second transistor, whereas the second transistor has a collector connected to the other terminal of the battery. The shaper delivers voltage to the power transistors via a voltage booster in the form of a capacitor so that the control pulses are of a voltage much higher than the voltage of the battery itself. When the motor is of bi-polar type a second pair of power transistors is connected to the other terminal of the coil in similar fashion.

Control for a step motor for the measurement of time

Apparatus for measuring the running of watches comprising an oscillator delivering a precise frequency fr coupled to a divider delivering a frequency fd, the mean value of the frequency fd being synchronized on a whole number multiple n of the frequency to be measured fm, by means of an on-off comparator which delivers a voltage +V and switches the rate of division of the divider to a value of X-Y when the signal of frequency fm is ahead of frequency fd or delivers a voltage -V and switches the rate of division of the divider to X + Y when the signal of frequency fm is behind the frequency fd. The output voltage of the comparator is applied to a resistor-capacitor network in such manner to obtain the mean value of this voltage, the mean value being proportional to the relative difference of frequency ##EQU1## WHERE FMO = FR/NX.

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Les Charbonnieres, Switzerland

Jean Claude Berney