Telecommunications – Transmitter and receiver at separate stations – Short range rf communication
Reexamination Certificate
2007-11-13
2007-11-13
Phu, Sanh D. (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Short range rf communication
C455S041100, C455S041300, C381S111000
Reexamination Certificate
active
10199453
ABSTRACT:
Wirelessly linking a portable audio device to an external audio system permits the external audio system to generate audible signals that enhance local playback of audio by the portable device. For example, the portable device wirelessly transmits lower frequency components of an audio signal to a subwoofer system for reproduction of bass frequencies extending below the playback capability of the portable device. In this manner, the external audio system provides bass enhancement for the portable audio device. Wireless transmissions between the portable audio device and the external audio system may be, but are not limited to, optical or radio frequency (RF) transmissions. Where RF signaling is used, the wireless link may be based on wireless network links, such as those supported by Bluetooth and 802.11bstandards, or based on, for example, dedicated RF interfaces.
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PCT Notification of Transmittal of the International Search Report or the Declaration dated Jun. 1, 2004.
Coats & Bennett P.L.L.C.
Phu Sanh D.
Sony Ericsson Mobile Communications AB
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