# US 11,451,913 B2 · Digital audio communication and control in a live performance venue > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,913 B2 - Document ID: US11451913B2 - Status: Granted - Kind: B2 - Application number: 17/209,990 - Filed: 2021-03-23 - Published: 2022-02-10 - Granted: 2022-09-20 - Earliest claimed: 2009-04-14 - Assignees: En Technology Corporation - Applicants: En Technology Corporation - Inventors: Fred W. Heineman - Web page: https://patentgrep.com/patent/US11451913B2 ## CPC - 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) - H04H 60/04: Studio equipment; Interconnection of studios - H04S 2400/13: Aspects of volume control, not necessarily automatic, in stereophonic sound systems - H04S 2400/15: Aspects of sound capture and related signal processing for recording or reproduction - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) - H04H: BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N) - H04S: STEREOPHONIC SYSTEMS ## Abstract In embodiments of the present invention improved capabilities are described for digitally transmitting audio that is converted from analog audio received from analog media pickup devices in a live performance venue by a stage box to a base unit over off-the-shelf twisted pair cable while sending pre-amplification control signals and power over the cable to the stage box. Audio for the performance venue is remotely managed from a virtual audio engineering mixing board that wirelessly communicates audio control commands to the stage box from a handheld computing device. ## Claims ### Claim 1 A system comprising: at least one video pickup device; and a plurality of stage boxes interconnected in a daisy-chain with at least one base unit, wherein a first stage box of the daisy-chain: receives a video signal from the at least one video pickup device, receives a multiplexed video signal from a second stage box in the daisy-chain; multiplexes the video signal with the multiplexed video signal producing a combined multiplexed video signal; and transmits the combined multiplexed video signal over the daisy-chain to the at least one base unit; wherein the at least one base unit: demultiplexes the combined multiplexed video signal into a plurality of video signals; and powers the plurality of stage boxes via a power signal over the daisy-chain that is physically distinct from the combined multiplexed video signal. ### Claim 2 (depends on 1) The system of claim 1, wherein the daisy-chain comprises a twisted-pair cable configuration. ### Claim 3 (depends on 1) The system of claim 1, wherein the daisy-chain comprises a co-axial cable configuration. ### Claim 4 (depends on 1) The system of claim 1, wherein the daisy-chain comprises a tri-axial cable configuration. ### Claim 5 (depends on 1) The system of claim 1, wherein the video signal includes an audio portion and the at least one base unit is further configured to transmit an audio pre-amplifier control setting from the at least one base unit to at least one of the plurality of stage boxes over the daisy-chain. ### Claim 6 (depends on 5) The system of claim 5, wherein the audio pre-amplifier control setting is a digital command for instructing a processor to control an audio pre-amplifier control feature of the at least one of the plurality of stage boxes. ### Claim 7 (depends on 6) The system of claim 6, wherein the processor and the audio pre-amplifier control feature are embodied within the at least one of the plurality of stage boxes. ### Claim 8 A method, comprising: interconnecting a plurality of stage boxes and a base unit in a daisy-chain; receiving, at a first stage box of the plurality, a video signal from a media pickup device; receiving, at the first stage box, a multiplexed video signal from a second stage box of the plurality; multiplexing the video signal with the multiplexed video signal thereby producing a combined multiplexed video signal; transmitting the combined multiplexed video signal over the daisy-chain to the base unit; demultiplexing the combined multiplexed video signal at the base unit into a plurality of video signals; and powering the plurality of stage boxes by transmitting power from the base unit through the daisy-chain. ### Claim 9 (depends on 8) The method of claim 8, wherein the daisy-chain comprises a twisted-pair cable configuration. ### Claim 10 (depends on 8) The method of claim 8, wherein the daisy-chain comprises a co-axial cable configuration. ### Claim 11 (depends on 8) The method of claim 8, wherein the daisy-chain comprises a tri-axial cable configuration. ### Claim 12 (depends on 8) The method of claim 8, further including transmitting a pre-amplifier control setting for an audio portion of the video signal from a media pickup device from the base unit to at least one of the plurality of stage boxes over the daisy chain. ### Claim 13 (depends on 12) The method of claim 12, wherein the pre-amplifier control setting is a digital command for instructing a processor to control a pre-amplifier control feature of the at least one of the plurality of stage boxes. ### Claim 14 (depends on 13) The method of claim 13, wherein the processor and the pre-amplifier control feature are embodied within the at least one of the plurality of stage boxes.