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1. (WO2017155783) POWER SEQUENCING CIRCUITRY AND METHODS FOR SYSTEMS USING CONTACTLESS COMMUNICATION UNITS

Pub. No.:    WO/2017/155783    International Application No.:    PCT/US2017/020433
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Fri Mar 03 00:59:59 CET 2017
IPC: G06F 13/40
Applicants: KEYSSA SYSTEMS, INC.
Inventors: ISAAC, Roger D.
KIM, Hoo
RUBERG, Alan T.
PALANIRAJ, Sunderraj V.
Title: POWER SEQUENCING CIRCUITRY AND METHODS FOR SYSTEMS USING CONTACTLESS COMMUNICATION UNITS
Abstract:
Embodiments discussed herein refer to systems, methods, and circuits for conforming to power up sequencing rules of a conventional hard-wired data connection even though the hard-wired data connection that would ordinarily exist between two data controllers has been replaced with one or more contactless connectors. A consequence of replacing the hard-wired connection with a contactless connector is that the data controllers no longer directly control the power sequencing between the controllers because they are not able to directly communicate with each other over the hard-wired data connections. Power sequence assist circuitry may be used to assists the data controllers in establishing a link in accordance with the power sequencing rules of a particular wired interface despite the intentionally broken hard-wired data connection between the two controllers by instructing the contactless connectors to communicate with their respective data controllers in compliance with the power sequencing rules.