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:
May. 24, 2022
Filed:
Apr. 02, 2018
Hitachi, Ltd., Tokyo, JP;
Akihito Akai, Tokyo, JP;
Tomoya Fujiwara, Tokyo, JP;
Yoshihiro Machida, Tokyo, JP;
Yoshiki Matsuura, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
To improve determination accuracy of determining whether a user is present in a house. A presence-in-house determination systemincludes: a first presence-in-house determination unitconfigured to determine whether the user is present in the house based on a change over time in electric power consumption of the house of the user; second presence-in-house determination unitsA andB configured to determine whether the user is present in the house based on an operation state of at least one of electric appliancesA andB provided in the house; and a comprehensive determination unitconfigured to determine whether the user is present in the house based on a determination result of the first presence-in-house determination unit and a determination result of the second presence-in-house determination unit.