US 12,133,040 B2
Headset charging system and headset charging method thereof
Hung-Yuan Li, New Taipei (TW)
Assigned to Merry Electronics Co., Ltd., Taichung (TW)
Filed by Merry Electronics Co., Ltd., Taichung (TW)
Filed on Jun. 13, 2022, as Appl. No. 17/838,275.
Claims priority of application No. 111118490 (TW), filed on May 18, 2022.
Prior Publication US 2023/0379613 A1, Nov. 23, 2023
Int. Cl. H04R 1/10 (2006.01); H02J 7/00 (2006.01)
CPC H04R 1/1025 (2013.01) [H02J 7/00034 (2020.01); H02J 7/00712 (2020.01); H04R 1/1041 (2013.01); H02J 2207/20 (2020.01)] 9 Claims
OG exemplary drawing
 
1. A headset charging system comprising:
an earphone device, the earphone device comprising:
an earphone battery; and
a charging circuit, coupled to the earphone battery and a signal input end of the earphone device; and
a charging device, used to accommodate and couple the earphone device to provide a charge current, wherein the charging circuit charges the earphone battery according to the charge current, the charging device or the earphone device performs data transmission between the earphone device and the charging device by switching the charge current between a first current and a second current, wherein the earphone device comprises:
a control circuit, coupled to the charging circuit, to control the charging circuit to adjust the charge current to switch between the first current and the second current; and
a sensing circuit, coupled to the control circuit and the signal input end of the earphone device, sensing the charge current to generate a sensing signal, wherein the control circuit determines the data transmitted by the charging device according to the sensing signal.