Patent · US Expired

Detector for indicating reception disturbances during ultrashort wave broadcast reception

US4777659A · kind A · utility

5Cited by

4References

51Claims

0Family size

Assignees

U.S. Philips Corporation · US
Hans Kolbe & Co. · DE

Inventors

Heinz Lindenmeier · Planegg, DE
Ernst Manner · Ottobrunn, DE
Gerhard Flachenecker · Ottobrunn, DE

Key dates

Filing date	Jan 28, 1987
Grant date	Oct 11, 1988
Priority date	—
Expiry date	Jan 28, 2007

Classification

Technology area (CPC H)Electricity
CPC primaryH04B1/10
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A detector for indicating reception disturbances during frequency modulated ultrashort wave broadcast reception, particularly in power vehicles, has a detector for indicating frequency disturbance deviations in high frequency or intermediate frequency carriers and an amplitude modulation detector for indicating disturbance amplitude modulation in the high frequency or intermediate frequency carrier, and an evaluating circuit with two inputs arranged so that the output signals of the detectors are supplied to the respective inputs of the evaluating circuit and an output signal of the evaluating circuit depends both on the disturbance amplitude modulation and the frequency disturbance deviation.

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