Aktive Pixelschaltung für ein Flugzeitsystem und Verfahren zum Betrieb davon

Details

Veröffentlichungs-Nr.

EP3392675

Aktenzeichen

EP17167584

Anmeldetag

21. April 2017

Veröffentlichung

10. März 2021

Erteilung

10. März 2021

Rechtsraum

EP

IPC

G01S17/36G01S17/894G01S7/493G01S7/4914

Abstract

The present invention relates to a pixel circuit for performing Time of Flight measurements comprising - at least one optical sensor (10) arranged for receiving a reference modulation signal (20) and a light signal and arranged for outputting a photocurrent signal depending on the light signal and on a phase shift corresponding to a phase difference between the light signal and the reference modulation signal, - an integrator circuit comprising an integration capacitor (Cint), an amplifier (15) and switching means (R0,R1,S0,S1, RS), whereby said switching means are arranged for resetting the integration capacitor in a reset mode, for connecting the integration capacitor between the at least one optical sensor and a voltage reference signal (Vref) in a passive mode, for connecting in an active mode the integration capacitor in a negative feedback loop comprising said amplifier, said negative feedback loop being fed with the photocurrent signal of the at least one optical sensor, and for connecting a signal output by the integrator circuit to an output bus in a readout mode.

Anmelder

Firma

Melexis Technologies NV

Land

🇧🇪 Belgien

Fachgebiete