# US 12,192,710 B2 · System and method for verifying connection between an active loudspeaker assembly and a passive loudspeaker assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,192,710 B2 - Document ID: US12192710B2 - Status: Granted - Kind: B2 - Application number: 17/878,311 - Filed: 2022-08-01 - Published: 2024-02-08 - Granted: 2025-01-07 - Earliest claimed: 2022-08-01 - Assignees: Crestron Electronics, Inc. - Applicants: Crestron Electronics, Inc. - Inventors: Neil Hildick-Smith; Ekin Binal - Web page: https://patentgrep.com/patent/US12192710B2 ## CPC - 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)} - H04R 29/001: {for loudspeakers (H04R29/007 takes precedence)} - H04R 3/00: Circuits for transducers (arrangements for producing a reverberation or echo sound G10K15/08; amplifiers H03F) - H04R 2227/003: Digital PA systems using, e.g. LAN or internet - H04R 2420/05: Detection of connection of loudspeakers or headphones to amplifiers - H04R 2420/09: Applications of special connectors, e.g. USB, XLR, in loudspeakers, microphones or headphones - 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) ## Abstract A method and apparatus to verify connection between a first and second electronic device is described herein, comprising: an ethernet cable connected at a first end to a first device at a first connector and connected at a second end to a second device at a second connector, and wherein the ethernet cable comprises four twisted pairs of conductors; a voltage source in the first device connected to a first end of a first conductor of a first twisted pair in the ethernet cable; a resistor with a first known resistance value located in the second device connected at a first end of the resistor to a second end of the first conductor of the first twisted pair and a second end of the resistor connected to a second end of a second conductor of the first twisted pair; a connection verification circuit located in the first device connected to a second end of the second conductor of the first twisted pair of the ethernet cable, wherein the connection verification circuit is adapted to generate a connection verification status signal when the second device is properly connected to the second device via the ethernet cable. ## Claims ### Claim 1 An apparatus to verify connection between a first and second electronic device, comprising: an ethernet cable connected at a first end to a first device at a first connector and connected at a second end to a second device at a second connector, and wherein the ethernet cable comprises four twisted pairs of conductors; a voltage source in the first device connected to a first end of a first conductor of a first twisted pair in the ethernet cable; a resistor with a first known resistance value located in the second device connected at a first end of the resistor to a second end of the first conductor of the first twisted pair and a second end of the resistor connected to a second end of a second conductor of the first twisted pair; and a connection verification circuit located in the first device connected to a second end of the second conductor of the first twisted pair of the ethernet cable, wherein the connection verification circuit is adapted to generate a connection verification status signal when the second device is properly connected to the second device via the ethernet cable. ### Claim 2 (depends on 1) The apparatus according to claim 1, wherein the connection verification circuit comprises: a first two-resistor voltage divider circuit adapted to generate an upper voltage limit; a second two-resistor voltage divider circuit adapted to generate a lower voltage limit; and a third two-resistor voltage divider circuit adapted to generate a status voltage, wherein when the status voltage is greater than the lower voltage limit and lower than the upper voltage limit a proper connection exists between the first and second electronic devices, and further wherein when the status voltage is either lower than the lower voltage limit or higher than the upper voltage limit a bad connection or no connection exists between the first and second electronic devices. ### Claim 3 (depends on 2) The apparatus according to claim 2 wherein the connection verification circuit further comprises: a first comparator adapted to receive, as a first reference voltage, the lower voltage limit, and to receive, as a first comparator input, the status voltage, and wherein the first comparator generates a first comparator first output when the status voltage is greater than the lower voltage limit and a first comparator second output when the status voltage is lower than the lower voltage limit; a second comparator adapted to receive, as a second reference voltage, the upper voltage limit, and to receive, as a second comparator input, the status voltage, and wherein the second comparator generates a second comparator first output when the status voltage is lower than the higher voltage limit and a second comparator second output when the status voltage is higher than the higher voltage limit; and a verification circuit adapted to receive the first comparator output first output, the first comparator second output, the second comparator first output, and the second comparator second output, and generate and transmit a connection status signal based on all of the outputs of the first and second comparators. ### Claim 4 (depends on 3) The apparatus according to claim 3, wherein the connection status signal indicates a proper connection exists between the first and second electronic devices when the first comparator generates a first comparator first output and the second comparator generates a second comparator first output, and a bad connection or no connection exists between the first and second electronic devices when the first comparator generates a first comparator second output and/or the second comparator generates a second comparator second output. ### Claim 5 (depends on 1) The apparatus according to claim 1, wherein the first electronic device comprises an active loudspeaker assembly, and wherein the second electronic device comprises a passive loudspeaker assembly. ### Claim 6 (depends on 5) The apparatus according to claim 5, wherein the active loudspeaker assembly comprises: at least one first loudspeaker; and at least one amplifier adapted to provide an amplified audio signal to the at least one first loudspeaker, and to provide an amplified audio signal to the passive loudspeaker assembly through the ethernet cable. ### Claim 7 (depends on 6) The apparatus according to claim 6, wherein the passive loudspeaker assembly comprises: at least one second loudspeaker. ### Claim 8 (depends on 7) The apparatus according to claim 7, wherein each of the first and second loudspeakers comprise a balanced mode radiator (BMR) loudspeaker. ### Claim 9 (depends on 6) The apparatus according to claim 6, wherein the active loudspeaker assembly comprises: at least one second amplifier adapted to provide an amplified audio signal to the at least one second loudspeaker in the passive loudspeaker assembly. ### Claim 10 A method for verifying connection between a first and second electronic device, the method comprising: connecting an ethernet cable at a first end to the first electronic device at a first connector and connecting the ethernet cable at a second end to the second electronic device at a second connector, and wherein the ethernet cable comprises four twisted pairs of conductors; and generating a connection status signal by a connection verification circuit located in the first electronic device, wherein the connection status signal indicates a status of a connection between the first electronic device and the second electronic device as either a good connection status or a bad connection status. ### Claim 11 (depends on 10) The method according to claim 10, wherein the connection status signal indicates a good connection status when the first and second electronic devices are properly connected, and wherein the connection status signal indicates a bad connection status when the cable is defective, or the first and second electronic devices are not properly connected. ### Claim 12 (depends on 11) The method according to claim 11, wherein the first and second electronic devices are not properly connected when the second electronic device is not a substantially similar type of electronic device. ### Claim 13 (depends on 10) The method according to claim 10, wherein the step of generating a connection status signal comprises: generating a current by applying a voltage through a first conductor of a first twisted pair in the ethernet cable such that a current is generated in a first resistor located in the second electronic device; passing the current through a second conductor of the first twisted pair back to the first electronic device and through a second resistor to ground, such that a connection status voltage is generated at the intersection of the first and second resistor; comparing the connection status voltage to an upper voltage limit and a lower voltage limit; and generating either a good connection status signal if the connection status voltage is greater than the lower voltage limit and less than the upper voltage limit, or generating a bad connection status signal if the connection status voltage is either lower than the lower voltage limit or greater than the upper voltage limit. ### Claim 14 (depends on 10) The method according to claim 10, wherein the first electronic device comprises an active loudspeaker assembly and the second electronic device comprises a passive loudspeaker assembly, and wherein the active loudspeaker assembly comprises at least one first loudspeaker; and at least one amplifier adapted to provide an amplified audio signal to the at least one first loudspeaker, and to provide an amplified audio signal to the passive loudspeaker through the ethernet cable, and wherein the passive loudspeaker assembly comprises at least one second loudspeaker. ### Claim 15 (depends on 14) The method according to claim 14, wherein each of the first and second loudspeakers comprise a balanced mode radiator (BMR) loudspeaker. ### Claim 16 (depends on 14) The method according to claim 14, wherein the active loudspeaker assembly comprises: at least one second amplifier adapted to provide an amplified audio signal to the at least one second loudspeaker. ### Claim 17 An audio distribution system (ADS), comprising: at least one active loudspeaker assembly comprising at least one first loudspeaker and at least one amplifier adapted to generate amplified audio signals to be broadcast by the at least one first loudspeaker, and wherein the at least one active loudspeaker assembly is adapted to output the amplified audio signals, and wherein the at least one active loudspeaker assembly is adapted to receive digitally encoded audio signals and other digital signals, and has a unique digital address; and at least one passive loudspeaker assembly comprising at least one second loudspeaker, the at least one passive loudspeaker assembly connected to the active loudspeaker assembly via an ethernet cable and adapted to receive the amplified audio signals from the active loudspeaker assembly; a connection verification circuit located in the active loudspeaker assembly and connected to the ethernet cable, and wherein the connection verification circuit is adapted to generate a connection verification status signal, wherein the connection status signal indicates a status of a connection between the active loudspeaker assembly and the passive loudspeaker assembly as either a good connection status or a bad connection status; and an audio distribution system (ADS) controller, the ADS controller comprising: at least one processor communicatively coupled to each of the active loudspeaker assembly and the passive loudspeaker assemblies; an input device communicatively coupled to the at least one processor; and a memory operatively connected with the at least one processor, wherein the memory stores computer-executable instructions that, when executed by the at least one processor, cause the at least one processor to execute a method that comprises: receiving as an input from the active loudspeaker assembly the connection verification status signal; and outputting the connection verification status signal to a display that conveys the status of the connection between the active loudspeaker assembly and the passive loudspeaker assembly. ### Claim 18 (depends on 17) The system according to claim 17, further comprising: an external audio source, communicatively coupled to the ADS controller, the external audio source adapted to transmit audio signals to the ADS controller to be broadcast through at least one of the active loudspeaker assembly and the passive loudspeaker assembly; and a network server communicatively coupled to the ADS controller and a network, the network server adapted to receive messages through the network, the messages comprising audio information to be broadcast through at least one of the active loudspeaker assembly and the passive loudspeaker assembly. ### Claim 19 (depends on 17) The system according to claim 17, wherein each of the at least one first loudspeaker and at least one second loudspeaker are balanced mode radiator loudspeakers. ### Claim 20 An audio distribution system (ADS), comprising: at least one active loudspeaker assembly comprising at least one first loudspeaker and at least one amplifier adapted to generate amplified audio signals to be broadcast by the at least one first loudspeaker, and wherein the at least one active loudspeaker assembly is adapted to output the amplified audio signals, and wherein the at least one active loudspeaker assembly is adapted to receive digitally encoded audio signals and other digital signals, and has a unique digital address; and at least one passive loudspeaker assembly comprising at least one second loudspeaker, the at least one passive loudspeaker assembly connected to the active loudspeaker assembly via an ethernet cable and adapted to receive the amplified audio signals from the active loudspeaker assembly; a connection verification circuit located in the active loudspeaker assembly and connected to the ethernet cable, and wherein the connection verification circuit is adapted to generate a connection verification status signal, wherein the connection status signal indicates a status of a connection between the active loudspeaker assembly and the passive loudspeaker assembly as either a good connection status or a bad connection status; and a personal computer (PC) communicatively coupled to the ADS, and wherein the personal computer comprises: at least one PC processor communicatively coupled to each of the at least two loudspeaker assemblies; a PC input device communicatively coupled to the at least one PC processor; and a PC memory operatively connected with the at least one PC processor, wherein the PC memory stores computer-executable instructions that, when executed by the at least one PC processor, causes the at least one PC processor to execute a method that comprises: receiving as an input from the active loudspeaker assembly the connection verification status signal; and outputting the connection verification status signal to a display that conveys the status of the connection between the active loudspeaker assembly and the passive loudspeaker assembly. ### Claim 21 (depends on 20) The system according to claim 20, further comprising: an external audio source, communicatively coupled to the ADS controller, the external audio source adapted to transmit audio signals to the ADS controller to be broadcast through at least one of the active loudspeaker assembly and the passive loudspeaker assembly; and a network server communicatively coupled to the ADS controller and a network, the network server adapted to receive messages through the network, the messages comprising audio information to be broadcast through at least one of the active loudspeaker assembly and the passive loudspeaker assembly. ### Claim 22 (depends on 20) The system according to claim 20, wherein each of the at least one first loudspeaker and at least one second loudspeaker are balanced mode radiator loudspeakers. ### Claim 23 An audio distribution system (ADS), comprising: at least one active loudspeaker assembly comprising at least one first loudspeaker and at least one amplifier adapted to generate amplified audio signals to be broadcast by the at least one first loudspeaker, and wherein the at least one active loudspeaker assembly is adapted to output the amplified audio signals, and wherein the at least one active loudspeaker assembly is adapted to receive digitally encoded audio signals and other digital signals, and has a unique digital address; and at least one passive loudspeaker assembly comprising at least one second loudspeaker, the at least one passive loudspeaker assembly connected to the active loudspeaker assembly via an ethernet cable and adapted to receive the amplified audio signals from the active loudspeaker assembly; a connection verification circuit located in the active loudspeaker assembly and connected to the ethernet cable, and wherein the connection verification circuit is adapted to generate a connection verification status signal, wherein the connection status signal indicates a status of a connection between the active loudspeaker assembly and the passive loudspeaker assembly as either a good connection status or a bad connection status; and a mobile device (MD) communicatively coupled to the ADS, and wherein the MD comprises: at least one MD processor communicatively coupled to each of the at least two loudspeaker assemblies; a MD input device communicatively coupled to the at least one MD processor; and a MD memory operatively connected with the at least one MD processor, wherein the MD memory stores computer-executable instructions that, when executed by the at least one MD processor, causes the at least one MD processor to execute a method that comprises: receiving as an input from the active loudspeaker assembly the connection verification status signal; and outputting the connection verification status signal to a display that conveys the status of the connection between the active loudspeaker assembly and the passive loudspeaker assembly. ### Claim 24 (depends on 23) The system according to claim 23, further comprising: an external audio source, communicatively coupled to the ADS controller, the external audio source adapted to transmit audio signals to the ADS controller to be broadcast through at least one of the active loudspeaker assembly and the passive loudspeaker assembly; and a network server communicatively coupled to the ADS controller and a network, the network server adapted to receive messages through the network, the messages comprising audio information to be broadcast through at least one of the active loudspeaker assembly and the passive loudspeaker assembly. ### Claim 25 (depends on 23) The system according to claim 23, wherein each of the at least one first loudspeaker and at least one second loudspeaker are balanced mode radiator loudspeakers.