Patent · US Active

Method and device for determining a pixel gray scale value image

US7420148B2 · kind B2 · utility

0Cited by

2References

10Claims

0Family size

Assignee

Conti Temic microelectronic GmbH · DE

Inventors

Christian Lang · New York, US
Bernd Schneider · Wiesbaden, DE
Holger Jordan · Hamberg, DE
Armin Dobusch · Ingolstadt, DE

Key dates

Filing date	Mar 14, 2005
Grant date	Sep 2, 2008
Priority date	—
Expiry date	Mar 20, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH10F39/15
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Disclosed is a method for determining a pixel gray scale value image, particularly for a multi-dimensional image system. According to said method a first modulation signal (M1) which is emitted at the emitting end and is reflected on an object that is to be recorded is correlated with a second modulation signal (M2) and is recorded at the receiving end based on at least two correlation signals (Ua, Ub or Ia, Ib) that are proportional to the respective received first modulation signal (M1). One of said modulation signals (M1, M2) is phase shifted in several phase steps (ψk) at the emitting or receiving end and a differential signal (D) is determined for each phase step (ψk) based on the correlation signals (Ua, Ub or Ia, Ib,) and a pixel gray scale value (PGray) is determined based on said difference signal (D) independently of interfering signals.

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