Patent · US Expired

Demodulator

US5561716A · kind A · utility

4Cited by

7References

11Claims

0Family size

Assignee

Blaupunkt-Werke GmbH · DE

Inventors

Jurgen Kasser · Bad Salzdetfurth, DE
Stefan Bartels · Bienenbüttel, DE

Key dates

Filing date	Nov 22, 1994
Grant date	Oct 1, 1996
Priority date	—
Expiry date	Nov 22, 2014

Classification

Technology area (CPC H)Electricity
CPC primaryH03D1/2209
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

In a demodulator for a stereo signal transmitted by amplitude and phase modulation of a carrier, a phase signal and a quantity signal are formed. By multiplication of the quantity signal with the tangent of the phase signal reduced by a value to be preset, a difference signal is formed. The value to be preset is generated in such a way as to minimize the direct portion of the difference signal.

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