Low-power wakeup pattern detection of multiple data streams
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United States of America
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Dec 21, 2021
Grant Date -
Jul 1, 2021
app pub date -
Dec 26, 2019
filing date -
Dec 26, 2019
priority date (Note) -
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status (Latency Note)
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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.
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