US 6,608,907 B1Granted

Audio output apparatus having wireless speakers

AssigneeSamsung Electronics Co., Ltd.

InventorSang-Hae Lee

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Abstract

An audio output apparatus having a wireless speaker is provided in an apparatus which outputs audio signal of 5.1 channel. In the audio output apparatus, an audio signal encoded in accordance with an IEEE 1394 protocol is received by a sub-woofer speaker through an IEEE 1394 communication line, is decoded in the sub-woofer speaker, is modulated by a spread spectrum FM modulation method, and is then transmitted to a plurality of wireless-connected speakers so as to be outputted. When the audio signal encoded by an IEEE 1394 communication protocol is outputted to the sub-woofer speaker through a first interface circuit, the encoded audio signal is, in accordance with a control signal from a controller provided in the sub-woofer speaker, received by a second interface circuit, and is decoded in real time by a decoder so as to output it externally while, at the same time, it is modulated by a spread spectrum FM modulation method, and is then transmitted to the wireless-connected plurality of speakers so as to be demodulated and outputted.

Claims18

Dependent claims

An audio apparatus, comprising:

an audio output unit for encoding an audio signal according to an IEEE 1394 protocol and for outputting the encoded audio signal;
a subwoofer speaker unit connected to said audio output unit for receiving said encoded audio signal from said audio output unit, for decoding said encoded audio signal to produce a decoded signal, for modulating said decoded signal by means of a spread spectrum FM modulation method to produce a modulated signal, and for wirelessly transmitting said modulated signal;
and
a plurality of speaker units, each of said speaker units receiving the wirelessly transmitted modulated signal, amplifying the received wirelessly transmitted modulated signal to produce an amplified signal and outputting the amplified signal;
wherein said subwoofer speaker unit comprises decoder means for receiving and decoding the encoded audio signal to produce first and second decoder outputs, converting and amplifying means for receiving, converting and amplifying the first decoder output to produce an audio output, and modulating and transmitting means for modulating the second decoder output and wirelessly transmitting the modulated second decoder output to the plurality of speaker units.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/223,314Filed 30 Dec 1998
Priority: KR 97/7975830 Dec 1997
Granted: 19 Aug 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04R 5/02
Stereophonic arrangements: spatial or constructional arrangements of loudspeakers
H04R 5/04
Stereophonic arrangements: circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker…
H04R 2420/07
Details of connection covered by H04R, not provided for in its groups: applications of wireless loudspeakers or wireless microphones
H04S 3/00
Systems employing more than two channels