Camera with exchangeable lens device

H - Electricity – 04 – N

Patent

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350/40

H04N 5/38 (2006.01) H04N 5/225 (2006.01) H04N 5/232 (2006.01)

Patent

CA 2003099

A video camera has a body with an imager therein for providing a video signal in response to the projection of a light image thereon by a selected exchangeable lens device removably mounted on the camera body, and first and second computers in the camera body and lens device, respectively, which are programmed so that, in an initial communication sequence therebetween after the selected lens device is mounted on the camera body, the second microcomputer transmits optical characteristic data for the respective lens device to the first microcomputer in response to a data transmission request signal from the latter, and further so that, in a control communication sequence which follows the initial communication sequence, the first microcomputer transmits a control signal to the second microcomputer on the basis of the received optical characteristic data and a controlled status signal supplied to the first microcomputer from the second microcomputer. Further, upon the mounting of the selected lens device on the camera body, the existence of adequate electrical connections therebetween is readily detected.

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