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Fahrenheit Thermoscope LLC

Jacky Bouvier

Yves Thorigne

Philippe Geoffroy

Patrice Senn

Pascal Vivet

Marc Renaudin

Andr&eacute; Adrial

A component comprises a coil for the supply by induction of the component and for the inductive bidirectional transfer with the station of a signal representative of data. Means for processing said signal are supplied by the coil and are produced in integrated technology on the substrate of the component. The turns of the coil are produced in flat integrated technology by metallization on the surface of the component. The integral coil occupies at least 50% of the total surface of the component.

Passive card without contact

The invention concerns a device for measuring a radiofrequency magnetic field, characterised in that it comprises on a common support: a coil forming a primary reception antenna; a voltage-controlled oscillator, monitored so that its output frequency depends on the amplitude of the magnetic field received on the coil forming primary antenna; an absorption modulation load connected to the oscillator output; a secondary antenna sensitive to the magnetic field influenced by the absorption modulation resulting from the power supply load by the voltage-controlled oscillator, and means for operating the available signal on the secondary antenna.

Device for punctual measurement of a radiofrequency magnetic field with constant amplitude and frequency

The invention concerns a device for measuring a radiofrequency magnetic field, characterised in that it comprises on a common support (): a coil forming a primary reception antenna; a voltage-controlled oscillator, monitored so that its output frequency depends on the amplitude of the magnetic field received on the coil forming primary antenna; an absorption modulation load connected to the oscillator output; a secondary antenna () sensitive to the magnetic field influenced by the absorption modulation resulting from the power supply load by the voltage-controlled oscillator, and means () for operating the available signal on the secondary antenna ().

A micro-electronic component for a portable object is of the type which incorporates digital processing means, and an interface for contact-free electromagnetic coupling with a remote station. The digital processing means can operate according to an operating mode of the request/acknowledgement type, which is substantially insensitive to the propagation time, without a global, regular clock. The component additionally comprises adapter means, which can adapt the signals of the contact-free interface to the signals of the digital processing means and vice versa, in order to permit two-way dialogue with the remote station.

Micro-electronic component, incorporating asynchronous digital processing means and a contact-free electromagnetic coupling interface

The invention relates to a stabilized power supply device for an assembly of remotely powered electronic components, for which the supply and the data transmission take place on the same channel. The device includes an electronic module which is interposed between the supply channel and the assembly of electronic circuits, supplies the said assembly of electronic components with a variable current in order for the proper operation of the said assembly of electronic components to be satisfied, and consumes a constant current in order to allow effective data transmission.

Stabilized power supply for remotely powered electronic components

Voltage rectifying device with integrated components

Portable electronic object for remote information exchange

Process and device controlling the operation of a portable electronic

The phase-locked loop includes means (3) for generating an internal signal (SIN) drawn from the output signal of the voltage-controlled oscillator (2), and a phase comparator (4) able to compare the phase of the internal signal (SIN) with that of an external signal received (SSY), and the output of which is looped back onto the voltage-controlled oscillator (2). It further comprises a device (6) accelerating the synchronization of the internal and external signals, including processing means able to receive, from the phase comparator (4), a predetermined indication representative of the non-coincidence of the internal and external signals, and, in response to this predetermined indication, to deliver control information in response to which the generation means (3) modify the phase of the internal signal in order to force the latter substantially into phase with the external signal (SSY).

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Meylan, France

Jacky Bouvier