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:
Jul. 12, 2022
Filed:
Feb. 06, 2017
Nec Corporation, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
An object sensing apparatusincludes: an emission unitconfigured to emit an RF transmission signal in each period; a reception unitconfigured to receive a reflected wave of the RF transmission signal as an RF reception signal; an IF signal generation unitconfigured to generate an IF signal by mixing the RF transmission signal and the RF reception signal; a one-dimensional spectrum generation unitconfigured to generate a one-dimensional spectrum with respect to distance obtained using the object sensing apparatus as a reference, based on the IF signal, and use the generated one-dimensional spectrum to generate a one-dimensional spectrum with fixed object reflection removed, from which a signal component caused by a reflected wave from a fixed object present in an emission range has been removed; a position detection unitconfigured to detect a position of an object other than the fixed object based on the amplitude of the one-dimensional spectrum with fixed object reflection removed; and a displacement detection unitconfigured to detect displacement of the object other than the fixed object, based on the phase of the one-dimensional spectrum with fixed object reflection removed, which corresponds to the position of the object other than the fixed object.