# US 2020/0396392 A1 · Time synchronized cameras for multi-camera event videos > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0396392 A1 - Document ID: US20200396392A1 - Status: Published application - Kind: A1 - Application number: 16/898,852 - Filed: 2020-06-11 - Published: 2020-12-17 - Earliest claimed: 2019-06-12 - Inventors: Robert Mark Griswold - Web page: https://patentgrep.com/patent/US20200396392A1 ## CPC - H04N 23/90: Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums - H04N 5/77: between a recording apparatus and a television camera - H04N 7/181: {for receiving images from a plurality of remote sources} - H04N 21/21805: {enabling multiple viewpoints, e.g. using a plurality of cameras} - H04N 21/242: Synchronisation processes, e.g. processing of PCR [Programme Clock References] {(arrangements for synchronising broadcast or distribution via plural systems in broadcast distribution systems H04H20/18)} - H04N 21/8547: involving timestamps for synchronizing content - H04N 23/66: Remote control of cameras or camera parts, e.g. by remote control devices - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A video capturing system for a sporting event includes a master clock; a plurality of cameras; and a logging device. The plurality of cameras are arranged to capture different views of participants of the sporting event. Each of the plurality of cameras is configured to capture video of participants of the sporting event. Each of the plurality of cameras includes a clock for tracking time. A logging device includes a processor, a memory, and a clock. The clock of the logging device is time-synchronized with the clocks of the plurality of cameras and the master clock. The logging device is electronically communicable with the plurality of cameras to at least time synchronize the clocks of the plurality of cameras and the master clock. ## Claims ### Claim 1 A video capturing system for a sporting event, comprising: a master clock; a plurality of cameras arranged to capture different views of participants of the sporting event, each of the plurality of cameras configured to capture video of participants of the sporting event, each of the plurality of cameras including a clock for tracking time; and a logging device including a processor, a memory, and a clock, the clock of the logging device being time-synchronized with the clocks of the plurality of cameras and the master clock, wherein the logging device is electronically communicable with the plurality of cameras to at least time synchronize the clocks of the plurality of cameras and the master clock. ### Claim 2 (depends on 1) The system of claim 1, wherein the sporting event is a swimming event at a swimming pool, a first of the plurality of cameras is disposed underwater, and a second of the plurality of cameras is disposed above water. ### Claim 3 (depends on 1) The system of claim 1, wherein the plurality of cameras store timestamp data for a first frame and a last frame of the video being recorded as metadata. ### Claim 4 (depends on 1) The system of claim 1, wherein the plurality of cameras is electronically communicable with the logging device via a wireless connection during a setup mode. ### Claim 5 (depends on 1) The system of claim 1, wherein one of the clocks of the plurality of cameras is the master clock. ### Claim 6 (depends on 5) The system of claim 5, wherein the clock of the logging device is time synchronized with the one of the clocks of the plurality of cameras that is the master clock during a setup mode. ### Claim 7 (depends on 5) The system of claim 5, wherein one of the clocks of the plurality of cameras is onboard a first of the plurality of cameras. ### Claim 8 (depends on 5) The system of claim 5, wherein one of the clocks of the plurality of cameras is a separate device connected in electronic communication with a first of the plurality of cameras. ### Claim 9 (depends on 1) The system of claim 1, comprising an electronic starting system in electronic communication with the logging device, wherein the logging device is configured to receive an indication of a start of the sporting event from the electronic starting system, and wherein the logging device is configured to store a timestamp of the start of the sporting event in a storage medium, wherein the timestamp is associated with race data in the storage medium. ### Claim 10 A method, comprising: detecting, by a logging device in electronic communication with an electronic timing system, a start signal from the electronic timing system; in response to detecting the start signal, logging a timestamp and race data of a sporting event in a storage medium connected in electronic communication with the logging device, wherein video is recorded using a plurality of cameras disposed in different locations of a sporting event from different viewing angles during the sporting event; and uploading videos from the plurality of cameras and logged time and race data to a cloud-service. ### Claim 11 (depends on 10) The method of claim 10, comprising: rendering the uploaded videos and time and race data. ### Claim 12 (depends on 10) The method of claim 10, comprising: before the detecting the start signal from the electronic timing system, synchronizing clocks of each of the plurality of cameras to a master clock. ### Claim 13 (depends on 12) The method of claim 12, wherein the synchronizing the clocks of each of the plurality of cameras to the master clock includes synchronizing to a sensitivity determined by a frame rate of the plurality of cameras. ### Claim 14 (depends on 13) The method of claim 13, wherein the synchronizing the clocks of each of the plurality of cameras comprises broadcasting a time from the master clock to each of the plurality of cameras, wherein each of the plurality of cameras is in a listening mode during the synchronizing. ### Claim 15 (depends on 10) The method of claim 10, wherein the sporting event is a swim meet and the plurality of cameras are arranged to record videos above water and underwater. ### Claim 16 (depends on 10) The method of claim 10, wherein the master clock is a clock of the logging device. ### Claim 17 (depends on 10) The method of claim 10, wherein the master clock is a clock of one of the plurality of cameras. ### Claim 18 A computer-readable storage medium, comprising computer-readable instructions thereon, wherein the computer-readable instructions, when executed, are configured to: detect, by a logging device in electronic communication with an electronic timing system, a start signal from the electronic timing system; in response to detecting the start signal, log a timestamp and race data of a sporting event in a storage medium connected in electronic communication with the logging device, wherein video is recorded using a plurality of cameras disposed in different locations of a sporting event from different viewing angles during the sporting event; and upload videos from the plurality of cameras and logged time and race data to a cloud-service. ### Claim 19 (depends on 18) The computer-readable storage medium of claim 18, wherein the computer-readable instructions, when executed are configured to: before the detection of the start signal from the electronic timing system, synchronize clocks of each of the plurality of cameras to a master clock. ### Claim 20 (depends on 18) The computer-readable storage medium of claim 18, wherein the sporting event is a swim meet and the plurality of cameras are arranged to record videos above water and underwater.