Wireless digital transmission system for loudspeakers

• US 20070160224A1
• Filed: 03/07/2007
• Published: 07/12/2007
• Est. Priority Date: 09/26/1997
• Status: Active Grant

• Current Assignee: TouchTunes Music Corporation (The Octave Music Group, Inc.)
• Original Assignee: TouchTunes Music Corporation (The Octave Music Group, Inc.)
• Inventors: Nathan, Guy
• Granted Patent: US 8,428,273 B2
• Time in Patent Office: Days
• US Class Current: 381/77
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones
• CPC Class Codes: H04R 27/00 Public address systems circuits for preventing acoustic reaction H04R3/02; circuits for distributing signals to loudspeakers H04R3/12; monitoring or testing arrangements for public address systems H04R29/007; amplifiers H03F
• CPC Class Codes: H04R 3/12 for distributing signals to two or more loudspeakers specially adapted for hearing aids H04R25/407
• CPC Class Codes: H04R 5/04 Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments combinations of amplifiers H03F3/68; stereophonic systems H04S

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.

Claims

1-9. -9. (canceled)

10. A method of activating loudspeakers in a loudspeaker system provided with a transmitting unit and a plurality of loudspeakers, each having an individual receiving unit and an individual address associated therewith, comprising:

converting output information to be transmitted into packets;

addressing each packet with the address of one or more loudspeakers;

transmitting, over AC power lines, the packetized information;

receiving the packetized information using at least one receiving unit;

comparing the one or more addresses associated with the packetized information with the address associated with the at least one receiving unit receiving the information; and

processing the packetized information, if one of the one or more addresses associated with the packetized information corresponds to the address associated with the receiving unit receiving the information.

11. The method of claim 10, wherein the output information converted into packets includes audio information and the processing includes reproducing the audio information included in the packetized information.

12. The method of claim 10, wherein the output information converted into packets includes commands for controlling a loudspeaker and the processing includes adjusting the loudspeaker in accordance with the commands for controlling a loudspeaker included in the packetized information.

13. The method of claim 12, further including

receiving commands from a remote control unit, wherein the commands from the remote control unit are included in the information converted into packets and wherein the responding further includes controlling the loudspeaker in accordance with the commands from the remote control unit included in the packetized information.