Patent · US Active

Open-loop frequency lock methods for fast boot-up time

US9706497B2 · kind B2 · utility

3Cited by

0References

16Claims

0Family size

Assignee

NXP USA, Inc. · US

Inventors

Yushi Tian · San Diego, US
Wayne Tang · Union City, US
Handiono Santosa · San Diego, US

Key dates

Filing date	Sep 14, 2015
Grant date	Jul 11, 2017
Priority date	—
Expiry date	Sep 14, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02D30/70
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A method for a near field communication circuit includes entering a low power mode and subsequently determining to exit the low power mode. The method further includes generating an open loop clock signal and providing the open loop clock signal to circuits of the near field communication circuit during a low power mode exit duration. Subsequently a reference clock signal is received from a host and used to clock the near field communication circuit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.