Patent · US Active

Infrared receiving unit

US8886146B2 · kind B2 · utility

1Cited by

5References

6Claims

0Family size

Assignee

Sennheiser electronic GmbH & Co. KG · DE

Inventors

Joerg Andres · Neustadt, DE
Dirk Reymann · Sonsbeck, DE

Key dates

Filing date	Oct 8, 2009
Grant date	Nov 11, 2014
Priority date	—
Expiry date	Aug 5, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH03G3/341
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

An IR receiver having a decision logic circuit for activating or deactivating a squelch. Activation or deactivation of the squelch is effected in dependence on a mean value of the frequency, a variance of the receiver intermediate frequency, a mean value of the audio amplitude, a variance of the audio amplitude and/or a signal strength of the receiver intermediate circuit frequency.

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