Abstract: Method for secure UWB time of arrival measurement comprising the step of: receiving at a receiver in a UWB frequency spectrum an information portion, wherein the information portion comprising a distance pulse sequence, wherein the information portion comprises a security pulse sequence for providing secure distance measurement, wherein the security pulse sequence is distinct from the distance pulse sequence, determining, in the receiver, a time of arrival based on the distance pulse sequence, verifying the security of the determined time of arrival based on the security pulse sequence and based on the determined time of arrival.

Abstract: Disclosed is a device for generating a transmission pulse, configured to: obtain information about a transmission pulse, wherein the information comprises a pulse shape; generate a plurality of kernel pulses on the basis of the pulse shape; form a transmission pulse based on the plurality of kernel pulses.

Abstract: Method for transceiving a message (M) for UWB distance measurement: transceiving a first information portion (A) via a narrowband channel; transceiving after the first information portion a second information portion (B) via a UWB channel, wherein the second information portion (B) comprises a distance pulse sequence being a pulse sequence to be used for distance measurement; wherein the first information portion (A) and the second information portion (B) are transceived in a common message frame.

Abstract: A ranging device includes a receiver configured to receive first pulses of a sequence of first pulses sent by a transmitter with a first interval between pulses and receive second pulses of a sequence of pulses second sent by the transmitter with a second interval between pulses, wherein the first interval is different from the second interval, and a processor configured to generate a first processing result by analyzing a timing of one or more peaks in a first receive signal received by the receiver in the reception of the first pulses, generate a second processing result by analyzing a timing of one or more peaks in a second receive signal received by the receiver in the reception of the second pulses; and determine a range between the transmitter and the ranging device depending on a result of a comparison of the first processing result and the second processing result.

Abstract: Disclosed is a device for generating a transmission pulse, configured to: obtain information about a transmission pulse, wherein the information comprises a pulse shape; generate a plurality of kernel pulses on the basis of the pulse shape; form a transmission pulse based on the plurality of kernel pulses.

Abstract: A method for ultra-wideband (UWB) secure time-of-arrival (ToA), the method including: receiving at a receiving device a secure distance message from a transmitting device containing a UWB signal containing a secret distance pulse sequence; determining the ToA of a path of the secure distance message at the receiving device; determining time instants of the pulses of the expected secret distance pulse sequence of the path in the UWB signal based on the determined ToA of the path of the secure distance message; decoding from the UWB signal at the determined time instants of the respective UWB pulse values their respective bit values to determine a bit sequence received by the path of the secure distance message; and comparing the received bit sequence decoded from the UWB signal with the secret distance bit sequence provided to verify the authenticity of the transmitting device and the integrity of the ToA measurement.

Abstract: Method for transceiving a message (M) for UWB distance measurement: transceiving a first information portion (A) via a narrowband channel; transceiving after the first information portion a second information portion (B) via a UWB channel, wherein the second information portion (B) comprises a distance pulse sequence being a pulse sequence to be used for distance measurement; wherein the first information portion (A) and the second information portion (B) are transceived in a common message frame.

Abstract: UWB Antenna comprising: a first substrate layer (10); a second substrate layer (20); a conductive ground layer (300) arranged on a first side of the first substrate layer and connected to a ground terminal; a first conductive layer (100) arranged between the first substrate layer (10) and the second substrate layer (20), wherein a central portion (140) of the first conductive layer (100) is connected to the feed terminal (3), wherein the first conductive layer (100) has a shape with a plurality of arms extending radially from the central portion (140), wherein the plurality of arms (110, 120, 130) is connected in its distal portion (111, 121, 131) with the ground layer (300); a second conductive layer (200) arranged on a second side of the second substrate layer (20, 20?), wherein the layers (10, 20, 100, 200, 300) are realised with a multilayer circuit board.

Abstract: Disclosed is a device for generating a transmission pulse, configured to: obtain information about a transmission pulse, wherein the information comprises a pulse shape; generate a plurality of kernel pulses on the basis of the pulse shape; form a transmission pulse based on the plurality of kernel pulses.

Abstract: UWB Antenna comprising: a first substrate layer (10); a second substrate layer (20); a conductive ground layer (300) arranged on a first side of the first substrate layer and connected to a ground terminal; a first conductive layer (100) arranged between the first substrate layer (10) and the second substrate layer (20), wherein a central portion (140) of the first conductive layer (100) is connected to the feed terminal (3), wherein the first conductive layer (100) has a shape with a plurality of arms extending radially from the central portion (140), wherein the plurality of arms (110, 120, 130) is connected in its distal portion (111, 121, 131) with the ground layer (300); a second conductive layer (200) arranged on a second side of the second substrate layer (20, 20?), wherein the layers (10, 20, 100, 200, 300) are realised with a multilayer circuit board.

Abstract: Device for secure distance measurement being a prover (P) or a verifier (V) comprising: a receiver (R3) configured to receive a receiving signal (RS) with a transmitted message (M) encoded therein, wherein the transmitted message (M) contains a verifying bit sequence (VBS), wherein a bit of the transmission message (M) is transmitted in the transmission signal (TS) by a pulse with a pulse modulation parameter with two pulse states, and a decoder (R2) configured to decode the verifying bit sequence (VBS) from the transmitted message (M) encoded in the receiving signal (RS).

Abstract: Apparatus for determining a time of arrival of a message signal comprising: a quadrature mixer (13, 14) for mixing a received message signal with the signal of a local oscillator, wherein the received message signal comprises a binary sequence modulated by binary frequency shift keying with pulses corresponding to a first value at a first frequency and with pulses corresponding to a second value at a second frequency, wherein the local oscillator has a frequency between the first frequency and the second frequency; a time of arrival detector (18) for determining a time of arrival of the message signal on the basis of the output of the quadrature mixer (13, 14).

Abstract: Apparatus for determining a time of arrival of a message signal comprising: a quadrature mixer (13, 14) for mixing a received message signal with the signal of a local oscillator, wherein the received message signal comprises a binary sequence modulated by binary frequency shift keying with pulses corresponding to a first value at a first frequency and with pulses corresponding to a second value at a second frequency, wherein the local oscillator has a frequency between the first frequency and the second frequency; a time of arrival detector (18) for determining a time of arrival of the message signal on the basis of the output of the quadrature mixer (13, 14).

Abstract: There is disclosed a portable electronic instrument, such as a wristwatch (1), including a case (2) enclosing an electronic module (6) and a display device (5), a crystal (3) fitted onto the case (2), an electric power supply source (4) housed in the case (2) and powering the electronic module (6) and the display device (5), and an antenna (20) for receiving and/or transmitting radio-frequency signals electrically connected to the electronic module (6). The case (2) includes an exterior body (4) including a bottom (4a) and lateral walls (4b) and a bezel element (7) fitted onto the exterior body (4) and supporting the crystal (3). The antenna (20) rests on an outer face (7a) of the bezel element (7).

Abstract: There is described a method of transmitting data by means of acoustic waves between a transmitter device (2) and a receiver device (1) wherein the transmitter device has a first electroacoustic transducer (26) for transmitting an acoustic carrier wave at one or more frequencies and means for modulating the acoustic carrier wave as a function of data to be transmitted and the receiver has a second electroacoustic transducer (18) for receiving the acoustic carrier wave modulated by the transmitter device and means for demodulating the acoustic carrier wave and extracting the transmitted data therefrom. The first and second electroacoustic transducers each have a determined bandwidth and a determined frequency response characteristic.

Abstract: There is disclosed an electronic instrument intended to be worn on a user's wrist, such as a wristwatch (1), including a case (2) and a wristband (2a) secured to the case. The case encloses an electronic module (6), a display device (5) and an electric power source (10) powering the electronic module and the display device. This instrument further includes an antenna (20) arranged in an off-centre position with respect to the centre (?) of the instrument. The instrument is configured to be worn on the wrist in a first, so-called normal position, and in a second, so-called opposite position, rotated through 180° with respect to the first position about an axis (?) substantially perpendicular to the general plane (?) of the electronic instrument.

Abstract: The present invention concerns an automatic time-setting system for a portable object having an horological function. The present invention also concerns a portable object having an horological function capable of being automatically set to the right time, such as an electronic timepiece. According to the present invention, the portable object (100) includes means (11) for receiving an acoustic time-setting signal (50) and means (12, 13) for deriving time-setting indications (ho, mo) from this acoustic time-setting signal (50) allowing said time indication of the portable object (100) to be corrected. According to the present invention, the portable object may advantageously be set to the right time via an acoustic time-setting signal (50) transmitted for example by the loud speaker of a personal computer, a television, a radio or a telephone receiver.

Abstract: The invention concerns a patch antenna (20) for a small-sized portable electronic instrument comprising a radiating element (21) separated from a ground plane (23) by a dielectric (22) and comprising feed (25) and ground (26) conductors for electrically connecting said radiating element and said ground plane (23) respectively, to an electric module (6). The ground plane (23) consists of a stamped metal plate including at least a folded foot (26a, 26b) outside said ground plane and directly connecting said ground plane (23) to said electronic module (6), said foot (26a, 26b) forming said ground conductor (26) of the antenna.

Abstract: The invention concerns a patch antenna (20) for a small-sized portable electronic instrument comprising a radiating element (21) separated from a ground plane (23) by a dielectric (22) and comprising feed (25) and ground (26) conductors for electrically connecting said radiating element and said ground plane (23) respectively, to an electric module (6). The ground plane (23) consists of a stamped metal plate including at least a folded foot (26a, 26b) outside said ground plane and directly connecting said ground plane (23) to said electronic module (6), said foot (26a, 26b) forming said ground conductor (26) of the antenna.

Abstract: There is disclosed a portable electronic instrument, such as a wristwatch (1), including a case (2) enclosing an electronic module (6) and a display device (5), a crystal (3) fitted onto the case (2), an electric power supply source (4) housed in the case (2) and powering the electronic module (6) and the display device (5), and an antenna (20) for receiving and/or transmitting radio-frequency signals electrically connected to the electronic module (6).