JP2012154967A5

JP2012154967A5 -

Info

Publication number: JP2012154967A5
Application number: JP2011011203A
Authority: JP
Filing date: 2011-01-21
Publication date: 2014-03-06
Anticipated expiration: 2031-01-21

Claims

An imaging device capable of mounting an interchangeable lens,
A first terminal and a second terminal for communicating with the mounted interchangeable lens;
A first communication mode in which a clock signal is output from the first terminal and communication is performed at the second terminal based on the clock signal, and communication is performed at the first terminal or the second terminal without using the clock signal. Control means capable of switching between the second communication mode and
Detecting means capable of detecting whether the mounted interchangeable lens has a first lens side terminal corresponding to the first terminal;
The control unit communicates in the second communication mode when the detection unit does not detect that the interchangeable lens has the first lens side terminal.

The control means performs communication in the first communication mode when the detecting means detects that the interchangeable lens has the first lens side terminal, and the communication causes the interchangeable lens to be in the second state. When it is determined that the communication mode corresponds to the second communication mode, the second communication mode is switched, and when it is determined that the interchangeable lens does not correspond to the second communication mode, the first communication mode is continued. The imaging device according to claim 1.

The detection unit can detect whether or not the mounted interchangeable lens has the first lens side terminal by detecting the voltage of the first terminal. The imaging device described in 1.

The detection means detects that the interchangeable lens has the first lens side terminal when the voltage of the first terminal is a first value, and the voltage of the first terminal is the first value. 4. The imaging apparatus according to claim 3, wherein when the second value is different from the first value, it is detected that the interchangeable lens does not have the first lens side terminal. 5.

When the detection unit does not detect that the interchangeable lens has the first lens side terminal, the control unit performs communication in the second communication mode at a preset communication speed, and the communication is performed. The imaging apparatus according to any one of claims 1 to 4 , wherein when it is not established, the communication speed is changed and communication is performed again in the second communication mode.

An imaging device capable of mounting an interchangeable lens,
A first terminal and a second terminal for communicating with the mounted interchangeable lens;
A first communication mode in which a clock signal is output from the first terminal and communication is performed at the second terminal based on the clock signal, and communication is performed at the first terminal or the second terminal without using the clock signal. Control means capable of switching between the second communication mode and
An electrical member capable of pulling down the first terminal;
Detecting means capable of detecting a potential state of the first terminal;
In the state where the interchangeable lens is mounted, the detection means detects the potential state of the first terminal,
The image pickup apparatus, wherein the control means communicates in the second communication mode when the potential of the first terminal is at a ground level.

When the control means performs communication in the first communication mode when the potential of the first terminal is not at a ground level, and determines that the interchangeable lens corresponds to the second communication mode by the communication. The imaging apparatus according to claim 6 , wherein the imaging apparatus is switched to the second communication mode, and the first communication mode is continued when it is determined that the interchangeable lens does not correspond to the second communication mode.

An interchangeable lens that can be attached to the imaging device according to any one of claims 1 to 7 ,
An interchangeable lens having no terminal corresponding to the first terminal.

An imaging apparatus system having an imaging apparatus body and an interchangeable lens detachably attached to the imaging apparatus body, wherein the imaging apparatus body and the interchangeable lens can communicate with each other,
The imaging device includes a first terminal and a second terminal for communicating with an attached interchangeable lens, outputs a clock signal from the first terminal, and outputs the second signal based on the clock signal. It is possible to switch between a first communication mode that communicates with a terminal and a second communication mode that communicates with the first terminal or the second terminal without using a clock signal,
When the interchangeable lens has a terminal corresponding to the first terminal, the second communication is performed when the interchangeable lens corresponds to the second communication mode after performing communication in the first communication mode. Switch to the mode, if the interchangeable lens does not support the second communication mode, continue the first communication mode,
An image pickup apparatus system that performs communication in the second communication mode when the interchangeable lens does not have a terminal corresponding to the first terminal.