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:
Feb. 02, 2021
Filed:
Nov. 25, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Yutaka Watanabe, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An accessory devicebeing able to switch an operating state between an active state and a sleep state in which power consumption is smaller than in the active state performs communication with a cameravia a notification channel CS used for signal transfer between the cameraand the accessory deviceand a data communication channel DATA used for data communication between the camera and the accessory device. The accessory device receives active instruction data that is transmitted from the camera in response to output of a predetermined signal from the accessory device in the sleep state via the notification channel, and switches the operating state of the accessory devicefrom the sleep state to the active state upon receiving the active instruction data.