# US 12,120,167 B2 · Video coupler using wavelength division multiplexing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,167 B2 - Document ID: US12120167B2 - Status: Granted - Kind: B2 - Application number: 17/726,259 - Filed: 2022-04-21 - Published: 2023-10-26 - Granted: 2024-10-15 - Earliest claimed: 2022-04-21 - Assignees: Product Development Associates, Inc. - Applicants: Product Development Associates, Inc. - Inventors: Bradley Vernon Briercliffe - Web page: https://patentgrep.com/patent/US12120167B2 ## CPC - H04L 65/75: Media network packet handling - H04L 65/762: {at the source (reformatting of additional data in video distribution servers H04N21/2355)} - H04J 14/0227: {Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation} - H04J 14/0241: {Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths} - H04L 65/70: Media network packetisation - H04L 65/752: adapting media to network capabilities - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract An apparatus for transmitting real-time video using wavelength division multiplexing. The apparatus may include an input, a transceiver, and processing circuitry. The input may receive at least native video data. The transceiver may transmit transport blocks via an optical transport link defining a plurality of optical channels using wavelength division multiplexing. The processing circuitry may be operatively coupled to the input and transceiver. The processing circuitry may be configured to receive a video frame of native video data from the encoder input and generate a transport block including a video segment of the video frame. The processing circuitry may further be configured to transmit the transport block including the video segment on an optical channel assigned to the apparatus using the transceiver. ## Claims ### Claim 1 An encoder apparatus comprising: an encoder input to receive at least native video data; an encoder transceiver to transmit and receive transport blocks via an optical transport link defining a plurality of optical channels using wavelength division multiplexing; and processing circuitry operatively coupled to the encoder input and the encoder transceiver and configured to: receive a video frame of native video data from the encoder input; generate a transport block comprising a video segment of the video frame; receive a return-path transport block via the encoder transceiver comprising a source address; generate an acknowledgement transport block that comprises the source address; transmit the transport block comprising the video segment on an optical channel assigned to the encoder apparatus using the encoder transceiver and transmit the acknowledgement transport block on the optical channel using the encoder transceiver. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the encoder transceiver comprises an optical multiplexer. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the video segment comprises at least a portion of a video line. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the video segment comprises a horizontal video line. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the generated frame further comprises a video segment number that indicates a position of the video segment in the frame of the native video data. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the processing circuitry is further configured to: receive user input data and/or sound data from the encoder input; generate a transport block comprising at least a portion of the user input and/or sound data and an out-of-band segment number that indicates a type of the input and/or sound data; and transmit the transport block comprising the input and/or sound data. ### Claim 7 A decoder apparatus comprising: a decoder transceiver to receive and transmit transport blocks via an optical transport link defining a plurality of optical channels using wavelength division multiplexing; a decoder output to transmit at least native video data; and processing circuitry operatively coupled to the decoder transceiver and the decoder output and configured to: receive transport blocks from one of the plurality of optical channels using the decoder transceiver, each transport block comprising a video segment of a video frame of native video data; reconstruct the native video data based on the received transport blocks; transmit the native video data using the decoder output; generate a return-path transport block comprising a source address and an input command; and transmit the return-path transport block via the optical transport link using the decoder transceiver. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the decoder transceiver comprises an optical demultiplexer. ### Claim 9 (depends on 7) The apparatus of claim 7, further comprising an optical tuner to select between the plurality of optical channels. ### Claim 10 (depends on 7) The apparatus of claim 7, wherein the processing circuitry is further configured to retransmit the return-path transport block in response to a predetermined period of time elapsing without receipt of an acknowledgement transport block comprising the source address. ### Claim 11 (depends on 7) The apparatus of claim 7, wherein the processing circuitry is further configured to: receive an acknowledgement transport block comprising the source address; and cease transmitting the return-path transport block. ### Claim 12 (depends on 7) The apparatus of claim 7, wherein, to reconstruct the video frame of the native video data, the processing circuitry is further configured to place each video segment of a single video frame in a video frame buffer. ### Claim 13 (depends on 7) The apparatus of claim 7, wherein each transport block further comprises a video segment number corresponding to a position of the video segment in the video frame and the native video data is reconstructed based on at least the video segment number of each transport block. ### Claim 14 (depends on 7) The apparatus of claim 7, wherein the processing circuitry is further configured to: receive at least one transport block comprising user input and/or sound data and an out-of-band segment number; determine a type of data based on the out-of-band segment number; and transmit the input and/or audio data based on the determined type of data using the decoder output. ### Claim 15 A system comprising: an optical transport link defining a plurality of optical channels; and a plurality of nodes, each node of the plurality of nodes operatively coupled to the optical transport link, the plurality of nodes comprising: one or more encoder apparatus, each of the one or more encoder apparatus comprising: an input to receive at least native video data; an encoder transceiver to transmit and receive transport blocks via the optical transport link using wavelength division multiplexing; and encoder processing circuitry operatively coupled to the input and the encoder transceiver and configured to: receive native video data comprising at least a video frame from the input; generate transport blocks, each transport block comprising a video segment of the video frame; receive a return-path transport block via the encoder transceiver comprising a source address; generate an acknowledgement transport block that comprises the source address; transmit the transport blocks on an optical channel assigned to the one or more encoder apparatus using the encoder transceiver; and transmit the acknowledgement transport block on the optical channel using the encoder transceiver; and one or more decoder apparatus, each of the one or more decoder apparatus comprising: a decoder transceiver to receive and transmit transport blocks via the optical transport link using wavelength division multiplexing; a decoder output to transmit at least native video data; and decoder processing circuitry operatively coupled to the decoder transceiver and the output and configured to: receive the transmitted transport blocks from one of the plurality of optical channels using the decoder transceiver; reconstruct the native video data based on the received transport blocks; and transmit the reconstructed native video data using the decoder output. ### Claim 16 (depends on 15) The system of claim 15, wherein the one or more encoder apparatus comprises a first encoder apparatus and a second encoder apparatus, and wherein each of the one or more decoder apparatus further includes an optical tuner to allow a user to switch between receiving transport blocks on the optical channel assigned to the first encoder apparatus or the optical channel assigned to the second encoder apparatus and outputting native video data based on the transport blocks received from the first encoder apparatus or the second encoder apparatus. ### Claim 17 (depends on 15) The system of claim 15, wherein the transport blocks are transmitted and received without the use of a network switch. ### Claim 18 (depends on 15) The system of claim 15, wherein one of the plurality of nodes is configured to assign the optical channel to the one or more encoder apparatus.