Patent · US Expired

EVALUATING UNIT FOR A DEVICE FOR DETECTING OBJECTS, IN PARTICULAR FOR MONITORING THE INTERIOR OF A MOTOR VEHICLE, AS WELL AS A DEVICE FOR DETECTING OBJECTS HAVING SUCH AN EVALUATING UNIT AND A METHOD FOR CONTROLLING SUCH A DEVICE

US6429774B1 · kind B1 · utility

3Cited by

4References

15Claims

0Family size

Assignees

Siemens Aktiengesellschaft · DE
KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Reinhard Schmid · Regensburg, DE
Marten Swart · Obertraubling, DE
Reinhard Hamperl · Altötting, DE
Arnulf Pietsch · Regensburg, DE
Hendrik Bözen · Nijmegen, NL

Key dates

Filing date	Dec 9, 1999
Grant date	Aug 6, 2002
Priority date	—
Expiry date	Dec 9, 2019

Classification

Technology area (CPC G)Physics
CPC primaryG01S7/412
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A demodulator of an evaluating unit for a device for detecting objects derives a useful signal from a supplied input signal with the aid of a carrier signal. The demodulator further derives a test signal with the aid of a modulated carrier signal. An evaluator detects as a function of the useful signal whether an object is being detected and, as a function of the test signal the functionality of the device.

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