Stmicroelectronics (rousset) Sas

Stmicroelectronics Gmbh

Stmicroelectronics (grenoble 2) Sas

Anthony Tornambe

Nicolas Cordier

Pierre Rizzo

Alexandre Tramoni

Jeremy Quignon

Hirokazu Sakamoto

A device includes: an NFC controller; a microcontroller; a charging circuit for an external battery; an energy recovery device; an antenna; and a switch. The NFC controller is configured to selectively control the switch in order to couple the energy recovery device to the charging circuit.

NFC charging

A contactless device includes an impedance matching and filter circuit connected to an antenna and being on the one hand operable for contactlessly communicating with a second device via the antenna, and on the other hand operable for contactlessly charging a rechargeable power supply of a third device via the antenna. A method of control includes modifying the impedance matching and filter circuit of the contactless device depending on whether the contactless device carries out the contactless communication or carries out the contactless charging.

Managing contactless communication and contactless charging from a contactless device, and corresponding contactless device

A device comprising at least one controller handset possessing a housing and at least one control element that is arranged so as to protrude from the housing and to be movable with respect to the housing so as to allow a user to control at least one movement of at least one object that is external to the device, and a contactless transponder having at least one antenna that is housed in the at least one control element.

Device, for example video game device, provided with a contactless transponder

An operation of calibrating the object using a reference reader is performed, the calibration operation including an operation of placing the reference reader at various distances away from the object that correspond to various values of a parameter within the object that is representative of the intensity of the signal received by the object, and, for each distance, an operation of determining an internal phase-shift compensation in the object with respect to a nominal internal phase shift, making it possible to obtain a load modulation amplitude that is higher, in terms of absolute value, than a threshold, and an operation of storing a lookup table of the various values of the parameter and the corresponding internal phase-shift compensations.

Method for compensating for a phase shift between the signal emitted by an object and that received from a reader equipped with an envelope detector and corresponding object

An object is capable of contactless communication with a reader by active charge modulation. The object includes an antenna, an impedance matching circuit, a memory, and a controller connected to the antenna through the impedance matching circuit. The antenna, the an impedance matching circuit and the controller together form a resonant circuit having a resonant frequency. The controller is configured to cause the object to transmit, in the absence of a signal received from a reader, a signal at the resonant frequency, to determine a characteristic obtained from the signal uniquely transmitted by the object, and to perform an adjustment of a phase shift within the object based on the characteristic and an indication stored in the memory, the indication linking values of phase shifts with values of the characteristic.

Method for adjusting phase in contactless communication

A method of detection of the presence, by a first NFC device, of a second NFC device, during periodic field emission bursts, where detection thresholds are adjusted according to results obtained during one or a plurality of previous bursts.

Detection of a NFC device

A system includes an antenna, and communications circuitry coupled to the antenna and configured for at least one of receiving and transmitting information via the antenna based on a contactless communications protocol. A charger is configured for contactless charging a power supply module via the antenna. A controller is configured for selectively operating the communications circuitry and the charger.

Growing community of inventors

Rousset, France

Anthony Tornambe