Patent · US Active

Low-power wakeup pattern detection of multiple data streams

US11204638B2 · kind B2 · utility

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1References

20Claims

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Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Andreas Schoch · Gladenbach, DE
Ernst Muellner · Munich, DE

Key dates

Filing date	Dec 26, 2019
Grant date	Dec 21, 2021
Priority date	—
Expiry date	Mar 11, 2040

Classification

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

Abstract

Described herein is a technology for a wakeup pattern—data stream correlation by a detector to provide a trigger condition for a microcontroller in a wakeup receiver (WuRX). For example, the detector includes a data packet layer with a plurality of index registers that are updated through sampling of data streams. A sample clock is coupled to each of the plurality of index registers to independently activate each of the plurality of index registers. A shared comparator will then compare the updated plurality of index registers to corresponding shift registers that are initialized with rotating wakeup pattern bits. Based upon a number of matching results, the detector generates a triggering signal that facilitates a low-power operating mode to a high-power operating mode change.

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