Patent ID: 6829010
Filing Date: 2004-12-07
Classification: H04N

Abstract:
An optical device having information means for generating or determining information on the basis of a necessary initializing operation and communication means for communicating with a camera mounted on the optical device, the optical device comprising:initializing means for executing the initializing operation; and communication inhibiting means for inhibiting the communication by said communication means until said initializing means completes the initializing operation of all of said optical device; wherein said communication means is transmission means for transmitting data to the camera, and said communication inhibiting means is transmission inhibiting means for inhibiting transmission of the information by said transmission means from said information means, until the initializing operation is completed; and further comprising a movable member and detection means for detecting a motion state of said movable member as relative information, wherein said initializing means moves said movable member to a reference position and makes said information means generate a position of said movable member at the reference position as absolute position information.