Patent ID: 9204029
Filing Date: 2015-12-01
Classification: G03B,H04N

Abstract:
1. A lens unit attachable to and detachable from a camera body, comprising: a plurality of terminals used to communicate with the camera body; and a communicating part which performs communications with the camera body using at least one of the plurality of terminals, wherein the plurality of terminals comprise: a first terminal consisting of one terminal for supplying power from the camera body to the lens unit; a second terminal consisting of one or more terminals connected to ground of the camera body and arranged adjacent to the first terminal; a third terminal consisting of one terminal indicating whether the lens unit is during a period of an operation and arranged adjacent to the second terminal; a fourth terminal consisting of one terminal used for synchronization between the camera body and the lens unit and arranged adjacent to the third terminal; a fifth terminal consisting of one or more terminals used for serial communication with the camera body and arranged adjacent to the fourth terminal; a sixth terminal consisting of one terminal used by the camera body for detecting the lens unit and arranged adjacent to the fifth terminal; and a seventh terminal consisting of one terminal for supplying power in voltage different from the voltage supplied from the first terminal and arranged adjacent to the sixth terminal, the communicating part receives, from the camera body via the fifth terminal, a busy signal control instruction that can indicate a type of an operation that can be performed by the lens unit and indicate a type of an operation of a notification target of the busy signal, and sets the third terminal to an ON state during the operation of the type indicated by the busy signal control instruction.