Retrofit digital network speaker system
AssigneeCrestron Electronics, Inc.
InventorsMark LaBosco, Alexander Marra
Life of this patent
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Abstract
Described herein is a retrofit digital speaker system comprising two or more retrofitted speaker enclosures, each of the two or more retrofitted speaker enclosures (enclosures) comprising: at least one speaker; and an analog-and-digital interface adapted to receive digitally encoded audio signals, electrical power, and digital command signals, and wherein the digitally encoded audio signals, electrical power, and digital command signals are transmitted over existing two wire analog audio cables, and further wherein the two or more retrofitted speaker enclosures are wired in a daisy chain fashion, via the existing two wire analog audio cables.
Claims14
A retrofit digital speaker system comprising two or more retrofitted speaker enclosures, each of the two or more retrofitted speaker enclosures (enclosures) comprising:
- at least one speaker;
- an analog-and-digital interface adapted to receive digitally encoded audio signals, electrical power, and digital command signals, and wherein the digitally encoded audio signals, electrical power, and digital command signals are transmitted over an existing single two wire analog audio cable, and further wherein the two or more retrofitted speaker enclosures are wired in a daisy chain fashion, via the existing single two wire analog audio cable connected therebetween;
- and
- a relay in each of the two or more retrofitted speaker enclosures adapted to remain normally open on power-up such that the digitally encoded audio signals, electrical power, and digital command signals received by a first enclosure and relay are not transmitted to a second enclosure unless and until specifically commanded to do so.
A method for commissioning two or more retrofitted speaker enclosures in a retrofit digital speaker system, the method comprising:
- daisy-chain connecting each of the two or more retrofitted speaker enclosures using a single two wire analog audio cable;
- transmitting digitally encoded audio signals, electrical power, and digital command signals are transmitted over the single daisy-chained two wire analog audio cable connected therebetween;
- receiving digitally encoded audio signals, electrical power, and digital command signals at an analog-and-digital interface in a first retrofitted speaker enclosure;
- and
- preventing the received digitally encoded audio signals, electrical power, and digital command signals from being transmitted to a second or subsequent retrofitted speaker enclosure by a normally open relay in series with the two wire daisy-chained analog audio cables.
Dependencies are inferred from the claim text.