Patent · US Expired

System for compensating signal interference in a PCM audio transmission

US4590531A · kind A · utility

3Cited by

4References

10Claims

0Family size

Assignee

Telefunken Fernseh und Rundfunk GmbH · DE

Inventors

Hans-Joachim Platte · Hemmingen, DE
Walter Voessing · Hannover, DE
Gunter Oberjatzas · Barsinghausen, DE
Ernst Schroder · Hannover, DE

Key dates

Filing date	Aug 16, 1984
Grant date	May 20, 1986
Priority date	—
Expiry date	Aug 16, 2004

Classification

Technology area (CPC G)Physics
CPC primaryG11B20/1876
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A pulse code modulated audio signal transmission system which compensates for signal interference in the pulse code modulated audio signal. The system includes a first device for receiving an audio signal and for converting the audio signal into a pulse code modulated audio signal, and a second device for receiving the audio signal and for producing an auxiliary signal corresponding to the audio signal but having a smaller bandwidth than the audio signal. A transmission circuit is connected to the first and second devices for receiving the pulse code modulated audio signal and the auxiliary signal and for producing an output signal which comprises the audio signal with portions of the audio signal which contain interference being substituted with corresponding portions of the auxiliary signal.

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