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:
Aug. 25, 2015
Filed:
May. 29, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Takuro Morita, Tokyo, JP;
Hideya Takanashi, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a camera system having an interchangeable lens and a camera body, a lens controller and a camera controller conduct timely change between a first communication method for a video shooting mode and a second communication method for a still-image shooting mode, and reciprocally communicated via a contact unit. The camera controller acquires time information in advance by an initial communication with the lens controller, and upon changeover from the first communication method to the second communication method, it interrupts communication after request information for changeover of the communication methods is transmitted to the lens controller, and initiates communication in the second communication method after elapse of a transition time indicated by time information. Upon changeover from the second communication method to the first communication method, the camera controller initiates communication in the first communication method after elapse of a transition time indicated by the time information.