CN201153321Y - Earphone - Google Patents

Abstract

The utility model relates to an earphone which comprises a plug and a socket. The socket adopts an eight-way or five-way USB, so the plug is designed to be matched with the socket. The detecting pin Ear_det is short connected with a ground pin GND. The earphone can avoid the reliability problems resulted from using the common structural reed earphone for a long time.

Description

A kind of earphone

Technical field

The utility model relates to a kind of earphone, particularly the reliability of the earphone of mobile communication terminal product and other amusing products etc.

Background technology

At present in mobile communication terminal product and other amusing products (MP3/MP4), earphone has become in user's use as annex or standard configuration can not obtain a scarce part.Earphone cooperates the headset detection circuit to finish the switching of the earphone portion circuit in portable terminal product and other amusing products.Most mode adopts when earphone inserts earphone socket, the headset detection level becomes high level, and portable terminal product or other amusing products determine this level when being high, switch to head circuit, this moment, the user can call by earphone, listened to the music etc.; When earphone was extracted earphone socket, the headset detection level became low level, and portable terminal product or other amusing products determine this level when low, switch to other circuit.

What the current earphone universal product adopted mostly is the mode that the structural formula reed detects, and as shown in Figure 1, when earphone inserted, reed Ear_det 6 flicked, and headset detection pin Ear_det6 and Ear_R4 are disconnected, and Ear_det 6 becomes high level; After earphone was extracted, reed Ear_det6 upspring, and headset detection pin Ear_det 6 and Ear_R4 are communicated with, and Ear_det 6 becomes low level, thereby reached the reliable purpose of using of earphone.The user is in order to experience the function of earphone, and plug earphone that can be regular after plug reaches certain number of times, is easy to occur reed and can not normally upsprings and flick, thereby earphone was lost efficacy, and brings the problem of product reliability aspect.

At this problem, the present invention proposes a kind of new Headphone structure, can avoid common structure reed-type earphone to use the integrity problem that brings often.

The utility model content

The utility model proposes a kind of new Headphone structure, comprise plug and socket, this socket is USB, and this plug is corresponding with it, the detection pin Ear_det of this plug and ground pin GND short circuit.

This socket is 8 pin or 5 pin USB.

Owing to there is not the problem of shell fragment, often between plug can not cause detecting pin and lost efficacy, therefore do not exist original Headphone structure to occur the problem that headset detection lost efficacy easily, and implement simple, flexible, practical.

Description of drawings

Fig. 1 is general earphone interface schematic diagram;

Fig. 2 is a 8pin earphone interface schematic diagram of the present utility model;

Fig. 3 is a 5pin earphone interface schematic diagram of the present utility model.

Embodiment

As shown in Figure 2, make earphone with 8pin mini_USB interface, wherein the earphone socket pin as shown in Figures 2 and 3, the headset detection mode is consistent with general headset detection mode, detects by Ear_det 4 level; Headset plug is corresponding with socket, uses detection pin Ear_det in the earphone and ground pin GND at headset plug side short circuit.Like this need only headset plug and insert in the earphone socket, Ear_det and GND short circuit, Ear_det becomes low level; After headset plug was extracted earphone socket, Ear_det and GND disconnected, and Ear_det becomes high level, reaches the purpose of headset detection.

Concrete implementation step is as follows:

Use 8pin mini_USB to do earphone socket, and adopt the plug that matches, 8pin such as Fig. 2.

8pin mini_USB plug pin:

Pin1 is earphone L channel (Ear_L)

Pin2, pin7, pin8 keeps

Pin3 is earphone R channel (Ear_R)

Pin4 is headset detection pin (Ear_det moves on the 100Kohm resistance on the 3V power supply)

Pin5 is earphone MIC (Ear_Mic)

Pin6 is earphone ground (GND)

8pin mini_USB plug and socket is corresponding, and pin4 (Ear_det) and pin6 (GND) are at inner short circuit.In the time of like this in headset plug inserts socket, pin4 and pin6 short circuit, Ear_det is directly pulled down to GND, becomes low level, and end product or other amusing products are judged as the insertion earphone, switch to head circuit, and the user uses ear-phone function; When headset plug is extracted socket, pin4 and pin6 disconnect, owing to move the 3V power supply on the inner 100Kohm of pin4 circuit, Ear_det becomes high level, and end product or other amusing products are judged as and do not insert earphone, switch to other circuit.Because using often, this Headphone structure do not have the reed Problem of Failure, thus guaranteed the reliable application of earphone, and implement simply practicality.

Earphone interface can use 8pin mini_USB interface in the aforesaid way, but is not limited to the 8pinmini_USB interface, and pin also is not limited to the description of Fig. 2, as the 5pin mini_USB interface among Fig. 3.

Claims (2)

1. an earphone comprises plug and socket, it is characterized in that, this socket is a USB socket, and this plug pin is corresponding with the socket pin, the detection pin Ear_det of this plug and ground pin GND short circuit.

2. earphone according to claim 1 is characterized in that this socket is the USB socket of 8 pin or 5 pin.

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