Patent ID: 9699363
Date: 2017-07-04
CPC Classifications: G03B,H04N

Claim:
1. A camera system including a camera body and an interchangeable lens freely detachable and attachable from the camera body, wherein the camera body comprises a body-side communication electric circuit that performs communication with the interchangeable lens; and a body-side control electric circuit that transmits a request signal to the interchangeable lens via the body-side communication electric circuit, and receives a response signal corresponding to the request signal from the interchangeable lens via the body-side communication electric circuit, the interchangeable lens comprises a lens-side communication electric circuit that performs communication with the camera body; and a lens-side control electric circuit that transmits the response signal corresponding to the request signal to the camera body via the lens-side communication electric circuit when receiving the request signal via the lens-side communication electric circuit, and wherein the body-side control electric circuit transmits the request signal including a lens driving request to the interchangeable lens via the body-side communication electric circuit at least in a video recording mode, and the lens-side control electric circuit, at least in the video recording mode, transmits the response signal corresponding to the request signal to the camera body when receiving the request signal including the lens driving request from the camera body via the lens-side communication electric circuit, and automatically transmits the response signal including a lens information to the camera body in synchronization with a frame of a video based on a synchronization signal without receiving a request signal for the lens information from the camera body, and the transmission of the lens information synchronized with the frame of the video and the transmission and reception of the request signal and the response signal are both performed in a communication period corresponding to the frame of the video.