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. 16, 2019
Filed:
Oct. 05, 2017
Huawei International Pte. Ltd., Singapore, SG;
Rui Yu, Singapore, SG;
Xuesong Chen, Singapore, SG;
Theng Tee Yeo, Singapore, SG;
Lee Guek Doreen Yeo, Singapore, SG;
Huawei International Pte. Ltd., Singapore, SG;
Abstract
A near field communication (NFC) device configured to use in preparing a carrier signal for active load modulation supporting both synchronous and asynchronous transmissions. The NFC device comprises a local clock generator for generating a reference clock signal (REF_CLK), a clock extractor for recovering a clock signal (EXT_CLK) generated by an NFC initiator device, a frequency tracking module (FTM) for performing a frequency tracking operation based on an input clock signal (REF_CLK or EXT_CLK) to produce a FTM output with its frequency aligned with the input clock signal, and a phase tracking module (PTM) for performing a phase tracking operation on the FTM output based on EXT_CLK to produce a PTM output with its phase aligned with EXT_CLK.