(19)
(11) EP 4 298 803 A1

(12)

(43) Date of publication:
03.01.2024 Bulletin 2024/01

(21) Application number: 22709507.2

(22) Date of filing: 23.02.2022
(51) International Patent Classification (IPC): 
H04R 29/00(2006.01)
 H04R 3/00(2006.01)
(52) Cooperative Patent Classification (CPC):
H04R 29/001; H04R 3/007; H04R 2430/01
(86) International application number:
PCT/US2022/017494
(87) International publication number:
WO 2022/182741 (01.09.2022 Gazette 2022/35)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 23.02.2021 US 202163152770 P
07.07.2021 US 202117369920

(71) Applicant: META PLATFORMS TECHNOLOGIES, LLC
Menlo Park, CA 94025 (US)

(72) Inventor:
  • CHIU, Marshall
    Menlo Park, California 94025 (US)

(74) Representative: Murgitroyd & Company 
Murgitroyd House 165-169 Scotland Street
Glasgow G5 8PL
Glasgow G5 8PL (GB)

   


(54) AUDIO SOURCE AMPLIFICATION WITH SPEAKER PROTECTION FEATURES AND INTERNAL VOLTAGE AND CURRENT SENSING