Patent · US Active

Using time-of-flight and pseudo-random bit sequences to measure distance to object

US11994586B2 · kind B2 · utility

0Cited by

24References

20Claims

0Family size

Assignee

AMS AG · AT

Inventors

Christian Mautner · Graz, AT
Daniel Furrer · Uetikon am See, CH
Daniele Perenzoni · Trento, IT
Robert Kappel · Sinsheim, DE

Key dates

Filing date	Jun 4, 2019
Grant date	May 28, 2024
Priority date	—
Expiry date	Jan 31, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG01S17/89
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The present disclosure describes a method and apparatus for enabling an imaging sensor to perform Time-of-Flight measurements while requiring less histogram memory and in many cases less power consumption. A light source is operated to cause multiple light emissions and a coarse/estimated distance is determined based on a first echo received based on the first light emission. A histogram is saved and a fine distance is calculated from the coarse distance and data derived from the echo of a second light emission.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.