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:
Mar. 24, 2026
Filed:
Jul. 09, 2024
Cypress Semiconductor Corporation, San Jose, CA (US);
Hui Luo, Marlboro, NJ (US);
Rakesh Taori, McKinney, TX (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A method includes backscattering, by an ambient power (AMP) device that harvests environmental energy, radio frequency (RF) energy received in a wireless signal from at least one of a powered wireless device or a helper wireless device. The method includes causing, by the AMP device, an initialization request frame to be transmitted to the powered wireless device within a backscattered signal using a first spreading code. The first spreading code can encode a predetermined bit pattern, which is recognizable by the powered wireless device, and an identifier (ID) of the AMP device. The method includes receiving, by the AMP device, from the powered wireless device, an ID request frame in response to the powered wireless device detecting the initialization request frame and recognizing the ID of the AMP device. The ID request frame can trigger an attempt to initiate an encrypted wireless communication session with the powered wireless device.