Method for voltage stabilization of diodes of a photodetector
AssigneeRobert Bosch GmbH
InventorsKai Worms, Daniel Stricker-Shaver, Thomas Hasenohr
Life of this patent
Estimating the term…
Abstract
A method for voltage stabilization of one or more groups of single photon avalanche diodes of a photodetector, wherein a digitizer is connected downstream of each diode. The method includes: detecting one or more signals of a signal path of the photodetector, which signal path comprises the diodes and the digitizers, with the same blocking voltage applied to the diodes; ascertaining a particular amplitude spectrum of the one or more detected signals; ascertaining a particular local minimum of the ascertained amplitude spectrum or spectra; controlling the applied blocking voltage based on the ascertained local minimum or minima.
Claims12
A method for voltage stabilization of one or more groups of single photon avalanche diodes of a photodetector, wherein a digitizer is connected downstream of each of the diodes, the method comprising the following steps:
- detecting one or more signals of a signal path of the photodetector, the signal path including the diodes and the digitizers, with the same blocking voltage applied to the diodes;
- ascertaining a respective amplitude spectrum of each of the one or more detected signals;
- ascertaining a respective local minimum of each of the ascertained respective amplitude spectrum of each of the one or more detected signals;
- controlling the applied blocking voltage based on the ascertained respective local minimum or minima.
A photodetector, comprising:
- one or more groups of single photon avalanche diodes, wherein a digitizer is connected downstream of each of the diodes;
- a detection device configured to detect one or more signals of a signal path of the photodetector, the signal path including the diodes and the digitizers, with the same blocking voltage applied to the diodes;
- an ascertainment device configured to ascertain a respective amplitude spectrum of each of the one or more detected signals, wherein the ascertainment device is configured to ascertain a respective local minimum of each of the ascertained amplitude spectrum;
- and
- a control device configured to control the applied blocking voltage based on the ascertained local minimum or minima.
A non-transitory machine-readable storage medium on which is stored a computer program for voltage stabilization of one or more groups of single photon avalanche diodes of a photodetector, wherein a digitizer is connected downstream of each of the diodes, the computer program, when executed by a computer, causing the computer to perform the following steps:
- detecting one or more signals of a signal path of the photodetector, the signal path including the diodes and the digitizers, with the same blocking voltage applied to the diodes;
- ascertaining a respective amplitude spectrum of each of the one or more detected signals;
- ascertaining a respective local minimum of each of the ascertained respective amplitude spectrum of each of the one or more detected signals;
- controlling the applied blocking voltage based on the ascertained respective local minimum or minima.
Dependencies are inferred from the claim text.