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:
Jun. 04, 2002
Filed:
Nov. 13, 2000
Kazuhiro Izukawa, Tochigi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A camera system is composed of an accessory and a camera main body, where the accessory can be mounted on the camera main body, communication is performed between the accessory and the camera main body, and the accessory is supplied with power from the camera main body; the camera main body can supply power having a plurality of different voltages to the accessory, performs communication between the camera main body and the accessory, determines the voltage of the power suitable for the accessory from power supply voltage information of the accessory obtained by communication between the camera main body and the accessory and supplies the power to the accessory, whereby the voltage of the power to be supplied from the camera main body to the accessory can be correctly and promptly determined for each accessory even if there are alternative accessories which require either two types of voltages or three or more types of voltages.