Patent SG-11201804723W-A (SG)
Title: Drowsiness onset detection
Inventor: KANNAN AADHARSH
IPC: A61B5/024
Filed: 2016-12-08
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -' Organization International Bureau (43) International Publication Date ..... ...sr ,„,„1 22 June 2017 (22.06.2017) WIPO I PCT II (10) 111111111111111111111111 WO International Ell DM 2017/105976 DENIM Publication MIMI Number Al El RIIIIIIIIIIIIIII (51) International Patent Classification: 98052-6399 (US). RAMASWAMY, Govind; Microsoft A61B 5/00 (2006.01) BOOK 28/06 (2006.01) Technology Licensing, LLC, Attn: Patent Group Docketing A61B 5/024 (2006.01) GO8B 21/06 (2006.01) (Bldg. 8/1000), One Microsoft Way, Redmond, Washing- A61B 5/18 (2006.01) B60W 40/08 (2012.01) ton 98052-6399 (US). GUJJAR, Avinash; Microsoft Technology Licensing, LLC, Attn: Patent Group Docketing (21) International Application Number: (Bldg. 8/1000), One Microsoft Way, Redmond, Washing- PCT/US2016/065484 ton 98052-6399 (US). BHASKAR, Srinivas; Microsoft (22) International Filing Date: Technology Licensing, LLC, Attn: Patent Group Docketing 8 December 2016 (08.12.2016) (Bldg. 8/1000), One Microsoft Way, Redmond, Washing- ton 98052-6399 (US). (25) Filing Language: English (74) Agents: MINHAS, Sandip et al.; Microsoft Corporation, (26) Publication Language: English Attn: Patent Group Docketing (Bldg. 8/1000), One Mi- (30) Priority Data: crosoft Way, Redmond, Washington 98052-6399 (US). 14/974,584 18 December 2015 (18.12.2015) US (81) Designated States (unless otherwise indicated, for every (71) Applicant: MICROSOFT TECHNOLOGY LICENS- kind of national protection available): AE, AG, AL, AM, ING, LLC [US/US]; Attn: Patent Group Docketing (Bldg. AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, 8/1000), One Microsoft Way, Redmond, Washington BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, 98052-6399 (US). DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, Kfl, KN, (72) Inventors: KANNAN, Aadharsh; Microsoft Technology KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, Licensing, LLC, Attn: Patent Group Docketing (Bldg. MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, 8/1000), One Microsoft Way, Redmond, Washington NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, [Continued on next page] (54) Title: DROWSINESS ONSET DETECTION (57) : Drowsiness onset detection implementations predict when a person transitions from a state of wakeful- ness to a state of drowsiness based on heart rate information. 100 Appropriate is action then taken to stimulate the person to a state of wakefulness or notify other people of their state (with respect to drowsiness/alertness). This generally in- Drowsiness Onset Detector Computer Program 106 Rece iv ing Fea ture Extrac tio n Fea tu re Com bin ing Class ifier Inp u t Drow ify s iness Iden t ing Drows iness Onse t Warning volves capturing a person's heart rate information over time using one or more heart rate (HR) sensors and then comput- ing a heart- rate variability (HRV) signal from the captured heart rate information. Using Discrete Fourier Transform and DiscreteWavelet Transform, the HRV signal is analyzed to extract features that are indicative of an individual's trans- a wakeful state to a state. The extracted ition from drowsy features are input into an artificial neural net (ANN) that has been trained using the same features to identify when an in - K-116 ) 08L 110 112 114 dividual makes the aforementioned transition to drowsiness. 118 Whenever an onset of drowsiness is detected, a warning is initiated. 104 Raw HR Drowsiness Sensor HRV r 122 Onset Il Data Signal Warning .4\" 120 ) N 0\ In C Il --.... IN Il C ei ', ),„. ( Heart Rate Sensor(s) 24 -) FIG. 1 102 O WO 2017/105976 Al MIDEDIMOREHMOIDEHEDIDIRIBINIMMIEHMIE RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17 (ii)) VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) Published: with international search report (Art 21(3)) TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).