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US 2011/0255880 A1Published application
Ir receiving unit
AssigneeSennheiser electronic GmbH & Co. KG
InventorsJoerg Andres, Dirk Reymann
Life of this patent
Estimating the term…
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.
Claims6
An IR receiver comprising:
- a decision logic circuit configured to activate or deactivate a squelch based on at least one of a mean value of a frequency, a variance of the frequency, a mean value of an audio amplitude, a variance of the audio amplitude, and a signal strength of a receiver intermediate circuit frequency.
An IR receiver comprising:
- a decision logic unit configured to determine whether a received signal represents a meaningful signal based on an evaluation of at least one of a mean value of a frequency, a variance of the frequency, a mean value of an audio amplitude, a variance of the audio amplitude, and a signal strength of a receiver intermediate circuit frequency.
A method of activating or deactivating a squelch in an IR receiver, the method comprising:
- evaluating at least one parameter selected from the group consisting essentially of a mean value of a frequency, a variance of the frequency, a mean value of an audio amplitude, a variance of the audio amplitude, and a signal strength of a receiver intermediate circuit frequency;
- and
- effecting activation or deactivation of the squelch based on the evaluation of the at least one parameter.
Dependencies are inferred from the claim text.