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:
Apr. 24, 2018
Filed:
Feb. 22, 2017
Omron Corporation, Kyoto-shi, Kyoto, JP;
Yoshimitsu Nakano, Ritto, JP;
Hidekatsu Nogami, Kusatsu, JP;
OMRON Corporation, Kyoto-shi, JP;
Abstract
An interrogation device includes an interrogation unit that interrogates an RF tag in a contactless manner, and a controller that controls the interrogation unit. The controller obtains a signal strength value and an interrogation success rate from a reception signal received by the interrogation unit when controlling the interrogation unit to transmit a signal with transmission power that is being changed in stages, determines changed transmission power corresponding to a signal strength value and an interrogation success rate that are not less than a threshold selectively from a signal strength value and an interrogation success rate obtained in each stage of the transmission power, and outputs information about the determined transmission power.