Electrical audio signal processing systems and devices – One-way audio signal program distribution
Reexamination Certificate
2006-07-25
2006-07-25
Le, Huyen (Department: 2644)
Electrical audio signal processing systems and devices
One-way audio signal program distribution
C381S014000, C381S079000, C455S345000, C455S099000, C439S092000, C439S098000
Reexamination Certificate
active
07082203
ABSTRACT:
A wireless audio transmission apparatus and method for coupling audio players to audio receivers for broadcast of audio signals stored in and processed by the audio player. A housing carrying operative circuitry is electrically connected by a multiconductor cable to an audio player for receiving stereo channel signals. Band pass filters couple the stereo signal and signal ground conductors in the cable to the stereo encoder in the housing. The filtered stereo signals are received by a stereo encoder in the housing and modulated onto a radio frequency carrier signal. A transmitter coupled to an antenna carried in the cable wirelessly transmits the carrier signal and the audio signals to a remote radio frequency receiver for demodulation and broadcast of the audio signals. Preferably, the carrier signal is an FM radio frequency signal. The carrier signal is optionally selectable from a plurality of different carrier signal frequencies. In an optional aspect, the operative circuitry in the housing may be embedded directly in an audio player.
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Drakoulis Niko
Pace Ronald G.
Faulk Devona E
Le Huyen
Young & Basile P.C.
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