EM Microelectronic-Marin

Marin, Switzerland

EM Microelectronic-Marin

Marin, Switzerland

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Patent
EM Microelectronic-Marin | Date: 2017-02-22

The present invention relates in one aspect to an auxiliary charge pump for a RFID rectifier, the charge pump, which comprises a first charge pump stage (11; 111) connected to an input (14; 114), a second charge pump stage (12; 112) connected to the input, a diode clamp (13; 113) connected to an output (15; 115), and a regulating transistor (16; 116) having a gate connected with an output (21; 121) of the first charge pump stage and having a source and a drain, wherein one of the source and the drain is coupled to the diode clamp. In further aspects the invention relates to a RFID transponder, to a multistage rectifier and to a rectifier stage comprising such an auxiliary charge pump.


Patent
EM Microelectronic-Marin | Date: 2017-01-04

The present invention relates to a transponder (100), which comprises an antenna (2) and a multi-stage rectifier (103). The antenna is connected to an input of the multi-stage rectifier having m rectifier stages, and a shunt limiter (104) is connected to an output of the rectifier and connected to an n_(th) stage of the multi-stage rectifier, wherein n < m.


Patent
EM Microelectronic-Marin | Date: 2017-06-21

The present invention relates to a method for transmitting a beacon message (200), the method comprising :generating, with a beacon generating device (20, 21, 22, 23) at least one beacon message, wherein the at least one beacon message is defined by a beacon message format,wherein the beacon message format comprises a preamble field (202), an access address field (204), a protocol data unit (PDU) field (210) and a cyclic redundancy check (CRC) field (206),wherein the PDU field (210) comprises at least one electronic product code (EPC) encoded EPC-PDU field (214), andtransmitting, with the beacon generating device, the at least one beacon message using a Bluetooth Low Energy (BLE) wireless communication protocol to a transmission area within a transmission range of the beacon generating device for reception by one or more beacon receiving devices (30, 31, 32, 33) located in the transmission area.


Patent
EM Microelectronic-Marin | Date: 2017-07-12

The present invention relates to an electronic device (1) comprising a processing unit (5) capable of generating a signal representing a physical quantity, of a motor (4) driving a display device, said motor comprising two terminals (Mot1, Mot2), positive and negative, by which the processing unit controls same, the electronic device also comprising at least one shock-detecting circuit (7) connected between the processing unit and a terminal of the motor in order to detect an external shock applied to the motor, characterised in that the shock-detection circuit comprises a comparison portion (72) for comparing an induced voltage generated in the motor following a shock with a predetermined reference voltage (Vref) in order to determine a shock, the detection circuit also comprising a selection portion.


Patent
EM Microelectronic-Marin | Date: 2016-02-10

A circuit configuration for secure application includes several internal frequency detectors (10) arranged in digital units at critical points of an integrated circuit (30). The clock detectors (10) are concealed in the digital part of the integrated circuit (30) each as a standard cell (flip-flop unit) in order to prevent any external manipulation and in order to hide its function. The clock detectors (10) are preferably disposed in a clock tree topology, which can be at several levels for distributing the clock signal through the different digital unit tree at critical points. Alarms are generated via a clock detector network if at any level an external clock attack has been monitored.


Patent
EM Microelectronic-Marin | Date: 2016-02-03

This concerns a Bluetooth Low Energy (BLE) device, or system, or method of operating a BLE device and a respective computer program. The BLE device comprises a transceiver to broadcast the at least one advertising packet,a processor connected to the transceiver to generate the advertising packet and/or to trigger broadcasting thereof according to a broadcasting schedule. The device further comprises a verification element connected to the processor and being capable of ascertaining if a predefined condition is met, at least one of the verification element and the processor is capable of modifying the broadcasting schedule based on the predefined conditions ascertainment.


Patent
EM Microelectronic-Marin | Date: 2016-08-24

The electronic measurement circuit comprises a measurement sensor (1) with two differential mounted capacitors (C1, C2) each comprising a fixed electrode, and a common electrode arranged to move relative to the fixed capacitor electrode to alter the capacitive value when the physical parameter is measured. The circuit further comprises a first integrator unit (5) connected to the common electrode for integrating charge received from the sensor, and comprising two integrators arranged to be connected alternately to the common electrode, a first comparator (9) for comparing analogue output values from the first integrator unit, a second integrator unit (7) for integrating charge received from the first integrator unit (5), a second comparator (19) for comparing analogue output values from the second integrator unit, a switch circuit (3) for switching different voltage values across the capacitors, and a feedback circuit (11) for feeding a digital output signal (ai) from the first comparator to the switch circuit for controlling its operation, and an incremental calculation unit (13) receiving digital output signals (ai, bi) from the comparators and supplying a final digital output signal (y).


Patent
EM Microelectronic-Marin | Date: 2016-01-13

The present invention concerns an electronic measurement circuit for measuring a physical parameter comprising a measurement sensor (1) comprising two differential mounted capacitors (C1, C2) each comprising a fixed electrode, and a common electrode which is arranged to be movable relative to each fixed electrode of the two capacitors (C1, C2) for altering the capacitive value of each capacitor (C1, C2) during measurement. The circuit further comprises a first integrator unit (5) connected to the common electrode for integrating charge of the sensor (1), and comprising two integrators alternately connected to the common electrode; a second integrator unit (7) connected to the first integrator unit (5) for integrating charge of the first integrator unit (5); a comparator (9) for comparing analogue output values from the second integrator unit (7); a switch circuit (3) connected to the sensor (1) for switching different voltage values across the two capacitors; and a feedback circuit (11) for feeding a digital output signal (y) of the comparator (9) to the switch circuit (3) for controlling the operation of the switch circuit (3).


The electronic memory device comprises a non-volatile memory matrix organized in rows and columns, an address decoder with address input lines (addr_in_0, addr_in_1, ...) for selecting a row according to a particular address given on the address input lines. Additional address mask input lines (addr_msk_0, addr_msk_1, ...) are provided, each address mask input line being assigned to an address input line, wherein an address mask input line in activated state has the effect of ignoring the assigned address input line (addr_in_0, addr_in_1, ...). The method for testing said electronic memory device is performed with a significant lower number of read/write operations, since by ignoring a particular address line a plurality of write operations can be performed simultaneously.


Patent
EM Microelectronic-Marin | Date: 2016-05-27

A DC-DC converter (1) with low start-up power and voltage includes an inductor (3) connected to an input voltage source (2), a switch (11) connected to the inductor and controlled by a controller (10) and a diode (12) connected to a connection node of the inductor and the switch to provide an output voltage (Vout). The controller includes an oscillator and a monostable element, which are powered by the input voltage (Vin). The oscillator provides an oscillation signal (OSC) having a period T of a switching cycle of the switch. The monostable element (103) is controlled by the oscillation signal to determine a duration Tn of conduction of the switch, during which an increasing current (IL) flows through the inductor. The input impedance of the DC-DC converter increases, when the input voltage (Vin) drops below a first voltage threshold with a decreasing duty cycle d=Tn/T.

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