US 12,135,914 B2
Audio circuit, and device and control method related thereto
Yewei Huang, Guangdong (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Filed by VIVO MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Filed on Sep. 15, 2021, as Appl. No. 17/475,827.
Application 17/475,827 is a continuation of application No. PCT/CN2020/077740, filed on Mar. 4, 2020.
Claims priority of application No. 201910200071.9 (CN), filed on Mar. 15, 2019.
Prior Publication US 2022/0004352 A1, Jan. 6, 2022
Int. Cl. G06F 3/16 (2006.01); G06F 13/40 (2006.01); H04R 5/04 (2006.01)
CPC G06F 3/16 (2013.01) [G06F 13/40 (2013.01); H04R 5/04 (2013.01); G06F 2213/0042 (2013.01); H04R 2420/01 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An audio circuit, applied to a terminal, wherein the terminal and an earpiece are able to be connected by plugging, and the audio circuit comprises a first Type-C port, a first microphone input module, and a second microphone input module; the first Type-C port comprises a first pin and a second pin, the first microphone input module is connected to the first pin, and the second microphone input module is connected to the second pin; and the first microphone input module is different from the second microphone input module;
in a case that the first Type-C port and a second Type-C port of the earpiece are in a first plugging state, the first pin is connected to a third pin of the second Type-C port, and the second pin is connected to a fourth pin of the second Type-C port; and
in a case that the first Type-C port and the second Type-C port are in a second plugging state, the second pin is connected to the third pin, and the first pin is connected to the fourth pin; wherein
the third pin is configured to connect to a first audio signal terminal of a microphone of the earpiece, and the fourth pin is configured to connect to a first ground terminal of the microphone and is directly grounded;
wherein the first Type-C port further comprises a fifth pin and a sixth pin, the audio circuit further comprises a channel power amplifier module, the channel power amplifier module comprises a second audio signal terminal and a reference signal terminal, the second audio signal terminal is connected to the fifth pin, and the reference signal terminal is connected to the sixth pin; and
in a case that the first Type-C port and the second Type-C port are connected by plugging, the fifth pin is connected to a seventh pin of the second Type-C port, and the six pin is connected to an eighth pin of the second Type-C port and is directly grounded; wherein
the seventh pin is configured to connect to a third audio signal terminal of the earpiece, and the eighth pin is configured to connect to a second ground terminal of the earpiece;
wherein the first ground terminal and the second ground terminal are different terminals;
wherein the first Type-C port comprises a ninth pin and a tenth pin directly grounded, the ninth pin and the tenth pin are pins different from the first pin, the second pin, the fifth pin and the sixth pin in the first Type-C port, and the six pin is directly connected to the ninth pin and the tenth pin.