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:
Jan. 27, 2026
Filed:
Aug. 08, 2024
Seiko Epson Corporation, Tokyo, JP;
Kimio Nagasaka, Hokuto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A responder that receives an interrogation wave from an interrogator and transmits a response wave to the interrogator includes a plurality of antennae receiving the interrogation wave, a reference signal generator generating a reference signal, a plurality of modems outputting quadrature phase amplitudes based on reception signals output from the antennae when the interrogation wave is received and the reference signal, a parallel-time-series signal converter converting a parallel signal having the quadrature phase amplitude output from each of the modems into a time-series signal, a frequency divider outputting a frequency division signal having a frequency and a phase for detecting the time-series signal, a multiplier outputting a multiplication signal obtained by multiplying the time-series signal by the frequency division signal, and a beam selector determining an arrival direction of the interrogation wave based on the multiplication signals.