Audio input-output module, plug-in detection module and...

Details Audio input-output module, plug-in detection module and... Audio input-output module, plug-in detection module and...

2005-12-14

2010-10-05

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Monitoring/measuring of audio devices

C381S123000

Reexamination Certificate

active

07809144

ABSTRACT:
A plug-in detection module includes an impedance network for producing a plug-in signal in response to a supply signal that varies when one of a plurality of plug-in receptors is coupled to a plug connector and when one of the plurality of plug-in receptors is decoupled. A reference signal generator generates a reference signal having a plurality of reference signal values. A comparator generates a detection signal when the plug-in signal compares favorably to the reference signal. A processing module detects which of the plurality of plug-in receptors have a plug connector coupled thereto.

REFERENCES:
patent: 6970752 (2005-11-01), Lim et al.
patent: 7038499 (2006-05-01), Toosky
patent: 2004/0081099 (2004-04-01), Patterson et al.

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