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1. 发明申请

US20230067529A1 DEVICE FOR GENERATING TRANSMISSION PULSES BASED ON MULTIPLE KERNEL PULSES AND METHOD THEREFORE 有权
公开(公告)号：US20230067529A1
公开(公告)日：2023-03-02
申请号：US17895786
申请日：2022-08-25
申请人： 3db Access AG
发明人： Raghavasimhan Thirunarayanan , David Barras , Silvan Wehrli
IPC分类号： H04B1/04 , H03F3/24
摘要： 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.

2. 发明授权

US11489680B2 Method, device and system for secure distance measurement 有权
公开(公告)号：US11489680B2
公开(公告)日：2022-11-01
申请号：US16808547
申请日：2020-03-04
申请人： 3DB Access AG
发明人： Boris Danev , David Barras
IPC分类号： H04L9/40 , H04L9/32 , G01S11/02 , H04W12/63
摘要： 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). The decoder (R2) is based on a transmission format of the transmitted message (M) and based on the transmitted message (M) detected in the receiving signal (RS) defines sub-periods (4) in the receiving signal (RS) in which the first path (F1, F2) of the pulses (S1, S2) of the bits of the verifying bit sequence (VBS) of the transmitted message (M) are expected in the receiving signal (RS); and the decoder (R2) decodes a pulse state of a pulse (S1, S2) of a bit of the verifying bit sequence (VBS) based on the receiving signal (RS) received during one of the defined sub-periods (4) belonging to the pulse (S1, S2) to be decoded.

3. 发明授权

US09941926B2 Method, apparatus and computer program for determining a time of arrival 有权
公开(公告)号：US09941926B2
公开(公告)日：2018-04-10
申请号：US15122373
申请日：2015-02-26
申请人： 3DB Access AG
发明人： Boris Danev , David Barras
IPC分类号： H04B1/7183 , G01S5/02 , G01S13/76 , H04L27/152
CPC分类号： H04B1/7183 , G01S5/0221 , G01S13/765 , H04L27/1525
摘要： 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).

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