| 摘要 |
PROBLEM TO BE SOLVED: To prevent the malfunction of a lens even when a microcomputer on the lens side is reset at the time of mounting the lens by transmitting a signal showing that the microcomputer on the lens side is reset to a microcomputer on the body side. SOLUTION: When a lens is in a sleeve, after bringing down a chip select signal CSL to 'L', a starting lens is initiated. The signal CSL is set to be 'L', a renewed header HEB is output, and then a renewed header HEL is input from the lens. When the lens is started to be rest, mutual discrimination signals and the like are changed, and reset of mechanism is indicated. When a microcomputer 30 on the lens side is reset at the time of mounting the lens, by transmitting a signal showing the reset from the microcomputer 30 on the lens side to the microcomputer 10 on the body side, discrimination data is sent from the body side to the lens side, and mechanism in the lens can be reset. As a result, the lens can be prevented from causing malfunction. |
