Camera system, communication method, signal processing device, and camera for communicating via different types of wireless communication

A communication method for wirelessly connecting a plurality of cameras, each camera having a wireless communication function and being configured to capture a video, and a signal processing device having a wireless communication function and being configured to perform signal processing related to the video captured by the camera, the method comprising:

• communicating, between each camera and the signal processing device, a respective first signal which is a signal of the video captured by each camera through first wireless communication;
• and
• communicating, between each camera and the signal processing device, a respective second signal other than the first signal through second wireless communication different from the first wireless communication,
• wherein the signal processing device performs communication with each camera of the plurality of cameras through both the first wireless communication and the second wireless communication,
• wherein each camera of the plurality of cameras performs communication to transmit the respective second signal to each other camera of the plurality of cameras only through the second wireless communication,
• wherein the first wireless communication is communication with a lower delay than a delay of the second wireless communication, and
• wherein the second signal includes a signal configured to be transmitted to an imaging subject of the captured video to indicate which one or more cameras among the plurality of cameras capture video including the imaging subject.

A signal processing device comprising:

• circuitry configured to
• perform wireless communication with each camera of a plurality of cameras configured to capture a video, and
• perform signal processing related to the video captured by the camera,
• wherein the signal processing device performs communication with each camera of the plurality of cameras through both first wireless communication and second wireless communication different from the first wireless communication,
• wherein each camera of the plurality of cameras performs communication to transmit a respective signal to each other camera of the plurality of cameras only through the second wireless communication,
• wherein the first wireless communication is communication with a lower delay than a delay of the second wireless communication, and
• wherein the second signal includes a signal configured to be transmitted to an imaging subject of the captured video to indicate which one or more cameras among the plurality of cameras capture video including the imaging subject.

A camera comprising:

• circuitry configured to
• capture a video,
• perform wireless communication with a signal processing device that performs signal processing related to the video, and
• perform wireless communication with at least one other camera configured to capture the video,
• wherein the signal processing device performs communication with the camera and each other camera through both first wireless communication and second wireless communication different from the first wireless communication,
• wherein the camera performs wireless communication with each camera of the at least one other camera to transmit a respective signal only through the second wireless communication,
• wherein the first wireless communication is communication with a lower delay than a delay of the second wireless communication, and
• wherein the second signal includes a signal configured to be transmitted to an imaging subject of the captured video to indicate which one or more cameras among the plurality of cameras capture video including the imaging subject.