US 9,313,574 B2Granted

Wireless digital transmission system for loudspeakers

AssigneeTouchTunes Music Corporation

InventorGuy Nathan

Life of this patent

Estimating the term…

Loading patent…

Abstract

This invention relates to a wireless digital transmission system for loudspeakers comprising: compression means for the file representing the digital audio signal of the “compact disc” type, a transmission device comprising means of converting this compressed signal into a series signal moving by packets going to a modulator circuit with phase quadrature and means of transmitting the signals exiting the modulator circuit with phase quadrature to the domestic network for feeding electricity; a receiving device comprising means of connecting to this domestic network and of extracting from the feed electrical signal, by a demodulator with phase quadrature, data packets moving the digital audio signal to convert it into a parallelized digital signal sent to a decompression circuit; means of converting the decompressed digital signals into an analog signal intended to feed a loudspeaker after adequate amplification.

Claims20

Dependent claims

A loudspeaker system, comprising:

a transmitting unit;
a plurality of loudspeakers, each said loudspeaker having an individual receiving unit and an individual address associated therewith;
wherein the transmitting unit is configured to:
convert output information to be transmitted into packets, the packets including digital data having been compressed, serialized, and modulated for subsequent transmission,
address plural different audio signals to plural different loudspeakers, and
transmit, over AC power lines, the packetized information including packetized data corresponding to the plural different audio signals to the plural different loudspeakers;
and
wherein the loudspeakers are each configured to:
receive the packetized information via their respective receiving units;
compare the addresses associated with the packetized information with the address associated with their respective receiving units receiving the information;
and
when one of the addresses associated with the packetized information corresponds to the address associated with the respective receiving unit receiving the information, process the packetized information in order to (a) demodulate, parallelize, and decompress the digital data, (b) convert the digital data from the packetized information into analog data, and (c) cause the analog data to be output by the respective loudspeaker.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/692,253Filed 3 Dec 2012 · continuation
Priority: FR 97 1200726 Sep 1997
Published: US 2013/0094662 A118 Apr 2013
Granted: 12 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04R 3/12
Circuits for transducers: for distributing signals to two or more loudspeakers
H04R 5/04
Stereophonic arrangements: circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker…
H04R 27/00
Public address systems
H04R 2420/07
Details of connection covered by H04R, not provided for in its groups: applications of wireless loudspeakers or wireless microphones

Family

Application09/161,584Parent of this continuation · filed 28 Sep 1998
Application11/023,390Parent of this continuation · filed 29 Dec 2004
Application11/714,868Parent of this continuation · filed 7 Mar 2007
US 7,206,417 B2Parent of this continuation · filed 17 Apr 2007
US 2013/0094662 A1Pre-grant publication · published 18 Apr 2013
US 2005/0111671 A1Published application
US 2007/0160224 A1Published application
US 8,428,273 B2Related patent
US 9,313,574 B2This patent

From the US filing history. Foreign family members aren’t listed.