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. 14, 2021
Filed:
Dec. 20, 2019
Idro Co., Ltd, Suwon-si, KR;
Yanggi Kang, Yongin-si, KR;
Sangmok Lee, Daejeon, KR;
IDRO CO., LTD, Suwon-si, KR;
Abstract
A tag selection type optical radio frequency identification (RFID) tag depending on presence or not of visible light includes a photodiode configured to convert a visible light-type signal transmitted from a reader into an electrical signal, a tag integrated circuit (IC) configured to read information on the visible-light type signal using an analog digital converter (ADC) or comparator connected to the photodiode to receive the electrical signal therefrom, configured to be operated using energy obtained by converting a radio frequency (RF) signal received from the reader, to return a value determined to correspond to information to the reader, and configured to transmit stored data according to a command obtained by demodulating the electrical signal of the photodiode to the reader, and an antenna configured to facilitate reception of the RF signal by the tag IC or to facilitate transmission of the value and the data from the tag IC.