The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 1997
Filed:
Jun. 30, 1995
Katsumasa Kurihara, Urawa, JP;
Toshiaki Hozumi, Setagaya-ku, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A camera system having a camera body which is attachable to an accessory, such that the camera body includes a detection unit to detect that the accessory is in the process of being installed on the camera body, the detection unit having a detachment pin which sets a detachment switch ON or OFF. When the detection units detects that the accessory is in the course of installation, a semiconductor switching element (a MOSFET) is set OFF, and the provision of a power supply from a battery to a contact point of a electrical contact point unit of the camera body is stopped. As a result, the power supply is not provided to the accessory and various disadvantages are avoided when the accessory is in the course of installation. In addition, the power supply can be safely provided to the accessory regardless of any communication.