# US 12,015,867 B2 · Video routers and related methods with integrated audio mixing and processing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,867 B2 - Document ID: US12015867B2 - Status: Granted - Kind: B2 - Application number: 17/066,168 - Filed: 2020-10-08 - Published: 2022-04-14 - Granted: 2024-06-18 - Earliest claimed: 2020-10-08 - Assignees: Ross Video Limited - Applicants: Ross Video Limited - Inventors: Michael Pala; A. Matthew Zimmer; Donald Mark Sizemore; Yu Liu - Web page: https://patentgrep.com/patent/US12015867B2 ## CPC - H04N 5/265: Mixing - G06F 3/165: {Management of the audio stream, e.g. setting of volume, audio stream path} - H04L 12/56: {Packet switching systems} - H04L 65/61: for supporting one-way streaming services, e.g. Internet radio - H04L 65/612: for unicast - H04L 65/70: Media network packetisation - H04L 65/765: {intermediate} - H04N 5/268: Signal distribution or switching - H04N 21/23602: {Multiplexing isochronously with the video sync, e.g. according to bit-parallel or bit-serial interface formats, as SDI} - H04N 21/2368: Multiplexing of audio and video streams - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Video routing may include integrated audio mixing, audio processing, or both. An audio subsystem that is integrated with a video router, for example, may receive and mix router input audio signals to provide mixed audio signals, and route the mixed audio signals to router outputs as router output audio signals. Regarding audio processing, input audio signals that include router input audio signals that are received by the video router may be routed as output audio signals. The output audio signals include router output audio signals to be output from the video router. Respective ones of the output audio signals are processed to provide respective processed output audio signals. The input audio signals for the routing also include the processed output audio signals. ## Claims ### Claim 1 A video router comprising: router inputs to receive router input video signals and router input audio signals; router outputs to provide router output video signals and router output audio signals; an audio subsystem, coupled to the router inputs and the router outputs, to receive and mix a plurality of the router input audio signals to provide mixed audio signals, and to route the mixed audio signals to the router outputs as the router output audio signals, wherein the audio subsystem comprises: an audio crosspoint switch to receive input audio signals comprising the router input audio signals input to the router inputs and to route the input audio signals as output audio signals comprising the router output audio signals to be output from the video router through the router outputs, an audio mixing subsystem, coupled to the audio crosspoint switch, to receive the plurality of the router input audio signals as output audio signals from the audio crosspoint switch and to provide to the audio crosspoint switch the mixed audio signals, the input audio signals of the audio crosspoint switch further comprising the mixed audio signals. ### Claim 2 (depends on 1) The video router of claim 1, wherein the audio mixing subsystem comprises: an audio mixer to generate the mixed audio signals by summing the plurality of the router input audio signals at respective ratios. ### Claim 3 (depends on 2) The video router of claim 2, wherein the audio mixing subsystem further comprises a processing subsystem, coupled to the audio crosspoint switch and to the audio mixer, to process the plurality of the router input audio signals prior to mixing plurality of the router input audio signals. ### Claim 4 (depends on 1) The video router of claim 1, wherein the audio mixing subsystem comprises: an audio mixer configurable to be partitioned into a plurality of audio mixers, each audio mixer of the plurality of audio mixers to generate a respective subset of the mixed audio signals by summing a respective subset of the plurality of the router input audio signals at respective ratios. ### Claim 5 (depends on 4) The video router of claim 4, wherein each respective subset of the plurality of the router input audio signals comprises an equal number of the plurality of router input audio signals. ### Claim 6 (depends on 4) The video router of claim 4, wherein each respective subset of the plurality of the mixed audio signals comprises an equal number of the mixed audio signals. ### Claim 7 (depends on 4) The video router of claim 4, wherein the respective subsets of the plurality of the router input audio signals comprise subsets that include different numbers of the plurality of router input audio signals. ### Claim 8 (depends on 4) The video router of claim 4, wherein the respective subsets of the plurality of the mixed audio signals comprise subsets that include different numbers of the plurality of the mixed audio signals. ### Claim 9 (depends on 1) The video router of claim 1, wherein the audio subsystem is configured to process the plurality of the router input audio signals prior to mixing the plurality of the router input audio signals. ### Claim 10 A method comprising: receiving router input video signals and router input audio signals at router inputs of a video router; receiving and mixing, by an integrated audio subsystem of the video router, a plurality of the router input audio signals to generate mixed audio signals; providing router output video signals and router output audio signals to router outputs of the video router, the providing comprising routing, by the integrated audio subsystem, the mixed audio signals to the router outputs as the router output audio signals, wherein providing the router output audio signals to the router outputs comprises: routing, by an audio crosspoint switch of the integrated audio subsystem, input audio signals comprising the router input audio signals as output audio signals comprising the router output audio signals to be output from the video router through the router outputs, wherein the receiving and mixing comprise: receiving the plurality of the router input audio signals as routed audio signals routed by the audio crosspoint switch for the mixing; and providing the mixed audio signals to the audio crosspoint switch for further routing, the input audio signals of the audio crosspoint switch further comprising the mixed audio signals. ### Claim 11 (depends on 10) The method of claim 10, wherein the mixing comprises generating the mixed audio signals by summing the plurality of the router input audio signals at respective ratios. ### Claim 12 (depends on 11) The method of claim 11, further comprising: processing, by the integrated audio subsystem, the plurality of the router input audio signals prior to the mixing. ### Claim 13 (depends on 10) The method of claim 10, wherein the mixing comprises partitioning the mixing into a plurality of mixing partitions to generate respective subsets of the mixed audio signals by summing respective subsets of the plurality of the router input audio signals at respective ratios. ### Claim 14 (depends on 13) The method of claim 13, wherein each respective subset of the plurality of the router input audio signals comprises an equal number of the plurality of router input audio signals. ### Claim 15 (depends on 13) The method of claim 13, wherein each respective subset of the plurality of the mixed audio signals comprises an equal number of the mixed audio signals. ### Claim 16 (depends on 13) The method of claim 13, wherein the respective subsets of the plurality of the router input audio signals comprise subsets that include different numbers of the plurality of router input audio signals. ### Claim 17 (depends on 13) The method of claim 13, wherein the respective subsets of the plurality of the mixed audio signals comprise subsets that include different numbers of the plurality of the mixed audio signals. ### Claim 18 (depends on 10) The method of claim 10, further comprising: processing, by the integrated audio subsystem, the plurality of the router input audio signals prior to the mixing. ### Claim 19 A non-transitory processor-readable medium storing instructions which, when executed by a processor, cause the processor to perform a method, the method comprising: receiving router input video signals and router input audio signals at router inputs of a video router; receiving and mixing, by an integrated audio subsystem of the video router, a plurality of the router input audio signals to provide mixed audio signals; providing router output video signals and router output audio signals to router outputs of the video router, the providing comprising routing, by the integrated audio subsystem, the mixed audio signals to the router outputs as the router output audio signals, wherein providing the router output audio signals to the router outputs comprises: routing, by an audio crosspoint switch of the integrated audio subsystem, input audio signals comprising the router input audio signals as output audio signals comprising the router output audio signals to be output from the video router through the router outputs, wherein the receiving and mixing comprise: receiving the plurality of the router input audio signals as routed audio signals routed by the audio crosspoint switch for the mixing; and providing the mixed audio signals to the audio crosspoint switch for further routing, the input audio signals of the audio crosspoint switch further comprising the mixed audio signals. ### Claim 20 (depends on 19) The non-transitory processor-readable medium of claim 19, wherein the mixing comprises generating the mixed audio signals by summing the plurality of the router input audio signals at respective ratios. ### Claim 21 (depends on 19) The non-transitory processor-readable medium of claim 19, wherein the mixing comprises partitioning the mixing into a plurality of mixing partitions to generate respective subsets of the mixed audio signals by summing respective subsets of the plurality of the router input audio signals at respective ratios.