Camera lens mount apparatus
AssigneeFUJIFILM Corporation
InventorsKentaro Tokiwa, Takashi Machida
Life of this patent
Estimating the term…
Abstract
A camera comprises a lens unit and a camera body to which the lens unit is attached by a rotational operation. The camera body is provided with terminals including a specific terminal. Arrangement of the specific terminal is different from that of the other terminals. In detaching the lens unit from the camera body, the specific terminal is adapted to be disconnected earlier relative to the other terminals while the other terminals are connected. After the disconnection of the specific terminal has been detected, the other terminals are set to high impedance.
Claims23
An electronics device system including a first electronics device and a second electronics device to which said first electronics device is attached by a rotational operation, said electronics device system comprising:
- a first terminal group disposed on said first electronics device, said first terminal group including terminals arranged in one direction;
- and
- a second terminal group disposed on said second electronics device and including terminals arranged so as to correspond to the terminals of said first terminal group, said first terminal group sliding on said second terminal group from one end thereof in the direction of arrangement of said terminals when an attachment operation for attaching the first electronics device to said second electronics device is performed, and the terminals of said first terminal group being connected to the terminals of said second terminal group one on one to form a plurality of terminal pairs when said first and second electronics devices are kept in an attachment completion state,
- wherein said terminal pairs include first and second terminal pairs, said second terminal pair being connected later than said first terminal pair when said attachment operation of said first and second electronics devices is performed, and said second terminal pair being disconnected earlier than said first terminal pair when a detachment operation for detaching said first electronics device from said second electronics device is performed, and
- wherein said first terminal pair is set to high impedance after said second terminal pair has been disconnected and while said first terminal pair is connected.
An electronics device to which an accessory is attached by a rotational operation, said accessory comprising a first terminal group in which terminals are arranged in one direction, said electronics device comprising:
- a second terminal group including terminals, which are arranged so as to correspond to the terminals of said first terminal group, said first terminal group sliding on said second terminal group from one end thereof in the direction of arrangement of said terminals when an attachment operation for attaching said accessory to said electronics device is performed, and the terminals of said first terminal group being connected to the terminals of said second terminal group one on one when said accessory and said electronics device are kept in an attachment completion state,
- wherein said second terminal group includes first and second terminals, said second terminal being connected later than said first terminal when said attachment operation of said accessory and said electronics device is performed, and said second terminal being disconnected earlier than said first terminal when a detachment operation for detaching said accessory from said electronics device is performed, and
- wherein said first terminal is set to high impedance after said second terminal has been disconnected and while said first terminal is connected.
Dependencies are inferred from the claim text.