Versatile circuit for interfacing with audio headsets

Details Versatile circuit for interfacing with audio headsets Versatile circuit for interfacing with audio headsets

2006-04-04

2006-04-04

Tran, Sinh (Department: 2646)

Telephonic communications

Substation or terminal circuitry

For loudspeaking terminal

C455S575100

Reexamination Certificate

active

07023983

ABSTRACT:
A signal conditioning circuit is described which can facilitate dual mode use of a connector circuit, e.g., audio mode or data mode. In other words, a headset or alternatively, a data interface may be coupled to the connector circuit and signal conditioning circuit, depending on the mode of the device. In accordance with this disclosure, the signal conditioning circuit operates in audio mode without the need for conventional blocking capacitors in the speaker channels. Moreover, in some embodiments, the signal conditioning circuit also provides backwards compatibility with conventional connector circuits that include such blocking capacitors.

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