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. 28, 2020
Filed:
Jan. 04, 2019
Stmicroelectronics (Grenoble 2) Sas, Grenoble, FR;
Philippe Graffouliere, Voreppe, FR;
Bruno Paille, Engins, FR;
STMicroelectronics (Grenoble 2) SAS, Grenoble, FR;
Abstract
A contactless communication device is capable of communicating in a contactless way with a reader by using active load modulation. Each frame is preceded by a reception period. An antenna is configured to receive a reader signal during each reception period, and to receive a reader carrier signal and transmit a modulated device carrier signal to the reader during each frame. A processor is configured to carry out, in each reception period, a first synchronization between a signal originating from the reader signal received at the antenna and a device carrier clock signal device generated in the device. The processor is also configured to carry out, within each frame, a modulated device carrier signal suppression process in order to obtain a processed signal, and a second synchronization between the processed signal and the device carrier clock signal.