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:
Dec. 15, 2020
Filed:
Mar. 30, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Yacine El Kolli, Rennes, FR;
Pascal Lagrange, La Chapelle des Fougeretz, FR;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The invention relates to power over data cable (PoC) systems comprising power source equipment, PSE, and plural PoC devices connected to the PSE. The PoC devices can operate in various power modes including low and high power modes. A method of managing power performed by a processing device of the system upon starting-up includes: reading, in memory of the processing device, a power change record to determine if, prior to the start-up, a target PoC device was about to switch from the low power mode to the high power mode; if it was about to switch, restricting it to remain in the low power mode; otherwise, triggering the target device to switch to the high power mode. As being restricted to the low power mode, the target device can no longer cause power failures. Thus endless loops of power failures caused by one and the same device are avoided.