Abstract:
The invention concerns a Near Field Communication method comprising a step (1) of generating, by an antenna of a transmitter, a magnetic field (H), a step (2) of receiving, by an antenna of a tag, power from the generated magnetic field (H), then causing a drop in the generated magnetic field (H), wherein the method further comprises a step (3) of estimating the drop by sensing a voltage swing across said transmitter antenna.
Abstract:
A protection module (4) for a RF-amplifier (2) is efficient against overvoltage due to load impedance mismatch when said RF-amplifier is connected to a load RF-element (3). The protection module comprises a branch with at least one diode-like operating component (D1, D2, . . . , Dn) and a resistor (R2) which starts conducting when a RF-signal on a transmission link (6) between the RF-amplifier and the load RF-element is higher than a threshold set by the diode-like operating component. Such protection may be implemented in MOS technology only.
Abstract:
A method in a first device for anonymously delivering data to a part that has initiated a task is provided. The first device and the part initiating a task are participants in opportunistic sensing. The method comprises creating a data sample and encrypting the data sample with a public key of the task initiating part. After communicating the protected sample toone or more intermediate devices, one of the one or more intermediate devices delivers the protected sample to the task initiating part, such that the task initiating part does not know the identity of the first device. The task initiating device only know the identity of the one of the one or more intermediate devices that delivered the protected sample to the task initiating part, wherein the intermediate devices are participants in the opportunistic sensing.
Abstract:
The present invention provides a method for power control, a user equipment, a computer program and a storage medium. Based on an adjustment trend of the UE with respect to signal transmission power of a base station and a variation trend of the received signal quality, a current power control mode of the UE is determined, and then a target value of the received signal quality of inner-loop power control is reset after the power control mode of the UE tends to normal, so as to return the transmission power of the base station to the UE to a normal level as soon as possible, thereby to inhibit adverse influences caused by the windup effect.
Abstract:
An integrated circuit (100) comprises a clock generation stage (120) arranged to generate a clock signal having a clock frequency dependent on a reference signal. A delay stage (130) is arranged to generate a Clock Generation Stage delayed clock signal by delaying the clock signal. A control stage (140) is arranged to generate a control signal indicative of a delay of the delayed clock signal relative to the clock signal. A frequency divider (150) arranged to generate a divided signal by dividing a dividend signal having a dividend frequency dependent on the reference signal. A power supply regulator (170) is arranged to supply power to the frequency divider (150) at a first power level, the first power level being dependent on the control signal. power supply controlpower supply control
Abstract:
A method of driving a power stage configured to provide both positive output voltage higher than a first potential to a positive output and negative output voltage to a negative output, the method comprising:—generating a first control signal;—generating a second control signal;—operating, the first control signal so as to initiate a charging phase, such that a first duty cycle of the first control signal is controlling an amount of energy to be accumulated;—operating, simultaneously, at the control signals so as to initiate an independent discharging phase of the accumulated energy, in a boost-type to the positive output or in a buck-type or boost-type to the negative output, such that a second and third duty cycles of the second an third control signals are controlling an amount of energy to be discharged.
Abstract:
OFDM communication transceiver having a receiver chain and an emitting chain, adapted to test its connection with an antenna circuit unit (11), the receiver chain comprising a time-to-frequency transform unit (15) and the emitting chain comprising a frequency-to-time transform unit (6), and the transceiver further comprising:—Means for disconnecting the receiver chain to the antenna circuit unit (11);—Means for providing a stimulus as input to the emitting chain;—Means (22, 23) for reintroducing the signal at the output of the emitting chain as an input of the receiving chain;—Means (24) for determining a Circuit resonance frequency, Fr, and a quality factor, Q, of a transfer function computed from the output of the time-to-frequency transform unit (15);—Means for deciding (25, 26) about the connection of said antenna circuit unit (11) according to these resonance frequency and quality factor.
Abstract:
It is provided an electronic device (70) comprising a communication module (72) adapted to receive signals sent by an NFC reader (90) and adapted to send signals addressed to the NFC reader. The device also comprises a detector (74) coupled to the communication module and adapted to detect load-modulated signals among received signals. The detector is also adapted to prevent the communication module from sending a signal when the detector detects a load-modulated signal. The electronic device improves the field of near field communication.
Abstract:
A method for configuring an electronic device having an equalizer suited for processing a numeric audio signal according to an objective equalization improves the equalization of the numeric audio signal. The equalizer has a transfer function that implements a set of band-pass filters having a constant band-pass and a configurable weight in the transfer function. The method provides a set of objective gains representing the objective equalization, with each objective gain corresponding to a respective frequency. The method also determines values of the weights of the band-pass filters that minimize an error evaluated by comparing the set of objective gains to the transfer function. The set of band-pass filters includes at least one pair of band-pass filters having a common central frequency and distinct band-passes. The method also sets the weights of the band-pass filters to the determined values.
Abstract:
Systems and methods are provided for authenticating Internet Protocol (IP) Multimedia Subsystem (IMS) applications in a User Equipment (UE). A method includes: receiving a first Session Initiation Protocol (SIP) REGISTER message from an IMS application operating on the UE; transmitting a response message to the IMS application based on the received first SIP REGISTER message; receiving a second SIP REGISTER message from the IMS application operating on the UE; determining authentication for the IMS application based on the received second SIP REGISTER message from the IMS application operating on the UE; and based on the step of determining authentication for the IMS application, if the IMS application is authorized, then transmitting information associated with the first and second SIP REGISTER messages toward a SIP node or if the IMS application is unauthorized, then discarding data associated with the first and second SIP REGISTER messages.