Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2006-12-22
2010-11-16
Dao, Minh D (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S090300, C455S436000, C455S351000, C375S354000, C381S012000
Reexamination Certificate
active
07835772
ABSTRACT:
A FM output portable audio player is provided for digitally coupling audio signals generated therein to be broadcast through a radio receiver system, such as an automobile radio. The audio player includes an audio signal source for generating digital audio output signals. Digital audio interface circuitry is coupled directly to the digital audio output signals and includes a digital FM stereo/RDS multiplexer for modulating the digital audio output signals on a RF carrier to produce a modulated audio signal. An internal antenna is coupled to the digital FM stereo/RDS multiplexer. The portable audio player is capable of wirelessly transmitting the modulated signal to the radio receiver system. The digital audio interface circuitry is formed of integrated circuit chips which provides for lower cost, a compact size, and a higher audio quality. A radio data signal is also multiplexed by the digital FM stereo/RDS multiplexer to generate the modulated signal having the radio data signal centered about a 57 kHz suppressed carrier.
REFERENCES:
patent: 5257312 (1993-10-01), Therssen et al.
patent: 5584063 (1996-12-01), Brinkhaus
patent: 5673324 (1997-09-01), Kasser et al.
patent: 5717726 (1998-02-01), Herrmann et al.
patent: 5978689 (1999-11-01), Tuoriniemi et al.
patent: 6094568 (2000-07-01), Kianush et al.
patent: 6452919 (2002-09-01), Wietzke et al.
patent: 6470178 (2002-10-01), Cummings-Hill et al.
patent: 6477459 (2002-11-01), Wunderlich
patent: 6661292 (2003-12-01), Gierl et al.
patent: 6961548 (2005-11-01), Groeger et al.
patent: 7149312 (2006-12-01), Wildhagen
patent: 7551889 (2009-06-01), Quelle
patent: 7587170 (2009-09-01), Lee et al.
patent: 2002/0140515 (2002-10-01), Gierl et al.
patent: 2002/0187751 (2002-12-01), Gierl et al.
patent: 2003/0087618 (2003-05-01), Li et al.
patent: 2004/0247133 (2004-12-01), Gierl et al.
patent: 2006/0280270 (2006-12-01), Ibrahim et al.
patent: 2007/0061215 (2007-03-01), Waites
patent: 2008/0232279 (2008-09-01), Marholev
patent: 2008/0233892 (2008-09-01), Marholev et al.
patent: 2008/0298456 (2008-12-01), Haggis et al.
Chin Davis
Cirrus Logic Inc.
Dao Minh D
Lin Steven
Thomas Gregory S.
LandOfFree
FM output portable music player with RDS capability does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with FM output portable music player with RDS capability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FM output portable music player with RDS capability will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4184636