US 12,217,595 B2
Notification device, wearable device and notification method
Kuang-Chiu Huang, Taipei (TW)
Assigned to AURISMART TECHNOLOGY CORPORATION, Taipei (TW)
Filed by Aurismart Technology Corporation, Taipei (TW)
Filed on Oct. 13, 2022, as Appl. No. 18/046,239.
Application 18/046,239 is a continuation in part of application No. 17/331,726, filed on May 27, 2021, abandoned.
Claims priority of application No. 109117898 (TW), filed on May 28, 2020; and application No. 109206633 (TW), filed on May 28, 2020.
Prior Publication US 2023/0058503 A1, Feb. 23, 2023
Int. Cl. G08B 21/18 (2006.01); G08B 21/02 (2006.01)
CPC G08B 21/182 (2013.01) [G08B 21/02 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A notification device, comprising:
a sound sensor configured to detect a plurality of sound signals in time domain from an environment;
a microcontroller connected to the sound sensor to receive the sound signals in time domain, wherein the microcontroller is configured to:
generate a plurality of dynamic statistics of the sound signals in time domain during a first time period prior to a current time point;
generate a dynamic threshold corresponding the current time point by composing the dynamic statistics, comprising:
generating a plurality of candidate dynamic thresholds, wherein each of the candidate dynamic thresholds is formed by the dynamic statistics and a plurality of weights corresponding to the dynamic statistics; and
selecting the smallest one of the candidate dynamic thresholds as the dynamic threshold;
provide the sound signals in time domain during a second time period following the current time point when a magnitude of the sound signal in time domain at the current time point is greater than the dynamic threshold, and
transmit a feedback signal corresponding to the sound signals in time domain during the second time period following the current time point; and
an output device connected to the microcontroller, wherein the output device is configured to provide a feedback action according to the feedback signal.