公开(公告)号：US12055667B2

公开(公告)日：2024-08-06

申请号：US17160724

申请日：2021-01-28

Applicant: Melexis Technologies NV

Inventor： Andreas Ott

IPC: G01C3/08 ,  G01S7/32 ,  G01S7/48 ,  G01S7/4913

CPC classification number: G01S7/4913 ,  G01S7/32 ,  G01S7/4808

Abstract: An apparatus (100) comprises a light source that emits light modulated selectively at first and second modulation frequencies. A photonic mixer cell (102) generates and stores a plurality of electrical output signals respectively corresponding to phase offset values applied in accordance with an indirect time of flight technique and in respect of the selected modulation frequency. A signal processing circuit processes a first number of the electrical output signals at the first modulation frequency to calculate a first measurement phase angle (φ1) from a calculated first measurement vector, and a second number of the electrical output signals at the second modulation frequency to calculate a second measurement phase angle (φ2) from a second calculated measurement vector. A phase angle difference (Δφ) between the first and second measurement phase angles (φ1, φ2) is then calculated and a correction value (φcorr) applied to the phase angle difference (Δφ) to yield an extended range phase angle (φext) for calculating a range.

公开(公告)号：US11552677B2

公开(公告)日：2023-01-10

申请号：US17496486

申请日：2021-10-07

Applicant: Melexis Technologies NV

Inventor： Andreas Ott ,  Federico D'Aniello ,  Thomas Freitag ,  Andrea Baschirotto

IPC: H04B3/54

Abstract: A transmitter device is provided for transmission of data via DC power distribution lines includes a sequence generator arranged for receiving a raw data bit stream to be transmitted over a positive and a negative DC power distribution line and for deriving a switching sequence based on the raw data bit stream, and a circuit including one or more capacitors and a plurality of switches controllable with the switching sequence derived in the sequence generator.

公开(公告)号：US12282054B2

公开(公告)日：2025-04-22

申请号：US18500249

申请日：2023-11-02

Applicant: Melexis Technologies NV

Inventor： Francois Piette ,  Cliff De Locht ,  Axel Fanget ,  Andreas Ott ,  Andreas Laute ,  Thomas Freitag

IPC: G01R31/28

Abstract: A system for characterizing a transistor circuit which has a local minimum in its transfer characteristic by finding its local minimum. The system comprises: a bias voltage generator for generating a toggling signal; a multiplier configured for multiplying an electrical signal which is a function of the drain source current of the transistor circuit, with a waveform alternating between two predefined values synchronously with the toggling signal; a first integrator configured for integrating the electrical signal from the multiplier, and wherein if more integrators are present, linear combinations of output signals of the integrators are provided to the further integrators; a summator configured for summing the toggling signal and an integration signal and configured for outputting the sum to the gate of the transistor circuit.

公开(公告)号：US12248098B2

公开(公告)日：2025-03-11

申请号：US17109356

申请日：2020-12-02

Applicant: Melexis Technologies NV

Inventor： Andreas Ott

IPC: G01S7/4865 ,  G01B11/26 ,  G01S7/48 ,  G01S7/497 ,  G01S17/36 ,  G01S17/46 ,  G01S17/89 ,  G01S17/894

Abstract: An optical range calculation apparatus (100) comprises a light source configured to emit light in accordance with an indirect time of flight measurement technique. A photonic mixer cell (102) is configured to generate and store a plurality of electrical output signals respectively corresponding to a plurality of predetermined phase offset values applied (112) in accordance with the indirect time of flight measurement technique. A signal processing circuit (110, 124) is configured to process the plurality of electrical output signals in accordance with the indirect time of flight measurement technique in order to calculate a measurement vector and a measured phase angle from the measurement vector. The signal processing circuit (110, 124) is configured to calculate a phase angle correction value using reference illumination data and to apply the calculated phase angle correction value in order to correct the measured phase angle, and the signal processing circuit is configured to calculate a range using the corrected measured phase angle.

公开(公告)号：US11927669B2

公开(公告)日：2024-03-12

申请号：US17016861

申请日：2020-09-10

Applicant: Melexis Technologies NV

Inventor： Andreas Ott

IPC: G01S17/36 ,  G01S7/4915 ,  G01S17/46

CPC classification number: G01S17/36 ,  G01S7/4915 ,  G01S17/46

Abstract: An indirect time of flight range calculation apparatus comprises a light source, a photonic mixer that generates a plurality of output signals corresponding to a first plurality of phase values. A signal processor is also provided to calculate a first vector and a first angle from the first vector. The photonic mixer generates a second plurality of electrical output signals corresponding to a second plurality of phase values. Each phase value of the second plurality of phase values is respectively offset with respect to each phase value of the first plurality of phase values by a predetermined phase offset value. The signal processor processes the second plurality of electrical output signals in order to calculate a second vector, and de-rotates the second vector calculated and calculates a second angle from the de-rotated vector before offsetting the second angle against the first angle, thereby generating a corrected output angle.