WO2012003720A1

WO2012003720A1 - Device and method for connecting earphones for mobile phone

Info

Publication number: WO2012003720A1
Application number: PCT/CN2011/070972
Authority: WO
Inventors: 张永亮
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-07-08
Filing date: 2011-02-14
Publication date: 2012-01-12
Also published as: CN102035911A

Abstract

A device and method for connecting earphones for a mobile phone are disclosed in the invention. The device includes an earphone jack, an audio encoding and decoding device and a switch switching module. The audio encoding and decoding device is used to encode and decode audio data, the earphone jack is connected to the audio encoding and decoding device via the switch switching module, and used to connect the plugs of the earphones, and the switch switching module is used to switch the connection mode to the connection mode matching the interface standard of the earphone plug when the connection mode of the switch switching module does not match the interface standard of the inserted earphone plug. By applying the device for connecting earphones for the mobile phone in the invention, the mobile phone can be compatible to the earphones with different interface standards.

Description

Mobile phone earphone access device and method

The present invention relates to the field of communications, and in particular, to a mobile phone earphone access device and a mobile phone earphone access method. Background technique

At present, the universal mobile phone earphone interface is a concentric connector whose standard specification conforms to the JIS C 6560-1994 standard, including the socket end and the plug end, and the mobile phone side uses the socket end. There are two kinds of interfaces for mobile phone headsets, which are called 2.5mm concentric connector interface and 3.5mm concentric connector interface according to the diameter of the connector. Hereinafter, it is referred to as 2.5mm interface and 3.5mm interface. It can also be called 2.5mm mobile phone headset. And 3.5mm mobile phone headset.

There are two different typical standards for the definition of the above two types of headphone interfaces: One is YD/T 1885-2009 "Technical requirements and test methods for mobile communication handset headset interface", mainly used in mainland China; the other is Europe and America. The country is mainly the headphone interface definition standard currently used in the US market, but the definition of the foreign general headphone interface has not been clearly determined in the standard form. Since there are obvious interface definition differences between the above two standards, the external mobile phone headset that conforms to the standard of a headphone interface cannot be used normally in another standard mobile phone with a headphone interface.

There is currently no versatile technology for domestic standards and foreign standard interfaces. Summary of the invention

The invention provides a device and a method for accessing a mobile phone earphone, which can be compatible with mobile phone earphones of different interface standards.

The invention adopts the following technical solutions:

In one aspect, the present invention discloses a mobile phone earphone access device, including a headphone jack, and audio. a codec decoder and a switch switching module, wherein the audio plus code decoder is configured to add code to decode audio data, the earphone socket is connected to an audio plus code decoder through a switch switching module, and the earphone socket is used for connecting an earphone plug, the switch The switching module is configured to switch the connection mode to a connection mode conforming to the interface standard of the earphone plug when the connection mode thereof does not conform to the interface standard of the inserted earphone plug;

The connection mode of the switch switching module is consistent with the interface standard of the inserted earphone plug. The switch switching module is in the connection mode, and each signal end of the earphone socket is connected to a corresponding signal end of the audio plus code decoder.

In an embodiment of the mobile phone earphone access device, the mobile phone earphone access device further includes a baseband processor, and the baseband processor is connected to the switch switching module and is connected to the earphone socket for detecting the earphone socket and the earphone. When the plug is connected, the connection mode of the switch switching module is consistent with the interface standard of the earphone plug, and when the connection mode of the switch switching module does not match the interface standard of the earphone plug, the switching signal is output to the switch switching module.

In an embodiment of the mobile phone headset access device, the switching signal output by the baseband processor is a high level or a low level.

In an embodiment of the mobile phone headset access device, the switch switching module includes analog switches SW1 and SW2, and the analog switches SW1 and SW2 are respectively connected to a baseband processor for switching according to a switching signal output by the baseband processor. The connection mode is connected to the corresponding signal end of the audio plus code decoder and the earphone socket, so that the connection mode of the switch switching module is consistent with the interface standard of the earphone plug.

In an embodiment of the mobile phone headset access device, the switch switching module includes a first connection mode and a second connection mode, and when the base processor outputs a high level, the analog switches SW1 and SW2 are switched to the first connection. Mode, that is, SW1 is connected to the first signal end of the audio plus code decoder, and SW2 is connected to the second signal end of the audio plus code decoder;

When the baseband processor outputs a low level, the analog switches SW1 and SW2 are in the second connection. Connected mode, that is, SW1 is connected to the second signal end of the audio plus code decoder, and SW2 is connected to the first signal end of the audio plus code decoder.

In an embodiment of the mobile phone earphone access device, the mobile phone earphone access device includes a 2.5mm mobile phone earphone access device, and the first signal of the audio plus code decoder is in the 2.5mm mobile phone earphone access device. The MIC signal end, the second signal end is an L signal end, and the audio plus code decoder further includes a GND signal end and an R signal end;

The first signal end of the earphone socket of the 2.5mm mobile phone earphone access device is connected to the GND signal end of the audio plus code decoder;

The second signal end of the earphone socket of the 2.5mm mobile phone earphone access device is respectively connected to the MIC signal end or the L signal end of the audio plus code decoder through the switching of the analog switch SW2; the 2.5mm mobile phone earphone access device The third signal end of the earphone socket is connected to the R signal end of the audio plus code decoder (31);

The fourth signal end of the earphone socket of the 2.5mm mobile phone earphone access device is respectively connected to the MIC signal end or the L signal end of the audio plus code decoder through the switching of the analog switch SW1; the 2.5mm mobile phone earphone access device The sixth signal end of the earphone socket is connected to the earphone detection Ear-Det signal end of the audio plus code decoder;

Wherein, when the switch switching module is in the first connection mode, the fourth signal end of the earphone socket is connected to the MIC signal end through the SW1, and the second signal end of the earphone socket is connected to the L signal end through the SW2; when the switch switching module is in the second In the connection mode, the fourth signal end of the headphone jack is connected to the L signal end through SW1, and the second signal end of the headphone jack is connected to the MIC signal end through SW2.

In an embodiment of the mobile phone headset access device, the headset wired access device further includes a 3.5mm mobile phone earphone access device, the 3.5mm mobile phone earphone access device, and the first signal of the audio plus code decoder The end is a MIC signal end, the second signal end is a GND signal end, and the audio plus code decoder further includes an L signal end and an R signal end; The first signal end of the earphone socket of the 3.5mm mobile phone earphone access device is respectively connected to the GND signal end or the MIC signal end of the audio plus code decoder through the switching of the analog switch SW1; the 3.5mm mobile phone earphone access device The second signal end of the earphone socket is connected to the GND signal end or the MIC signal end of the audio plus code decoder through the switching of the analog switch SW2; the third signal end of the earphone socket of the 3.5mm mobile phone earphone access device and the audio plus code The R signal ends of the decoder are connected;

The fourth signal end of the earphone socket of the 3.5mm mobile phone earphone access device is connected to the L signal end of the audio plus code decoder;

The sixth signal end of the earphone socket of the 3.5mm mobile phone earphone access device is connected to the earphone detection Ear-Det signal end of the audio plus code decoder;

Wherein, when the switch switching module is in the first connection mode, the first signal end of the earphone socket is connected to the MIC signal end through the SW1, and the second signal end of the earphone socket is connected to the GND signal end through the SW2; when the switch switching module is in the second In the connection mode, the first signal end of the headphone jack is connected to the GND signal end through SW1, and the second signal end of the headphone jack is connected to the MIC signal end through SW2.

In another aspect, the present invention also discloses a mobile phone headset access method, wherein the access method is: when the connection mode of the switch switch module does not match the interface standard of the earphone plug, the connection mode is switched to the earphone plug The connection mode that the interface standard conforms to;

Wherein, the connection mode of the switch switching module is consistent with the interface standard of the earphone plug: when the switch switching module is in the connection mode, each signal end of the earphone socket is connected to a corresponding signal end of the audio codec decoder.

In an embodiment of the mobile phone headset access method, the method further includes the following steps:

The baseband processor outputs a switching signal to the switch switching module when the connection mode of the switch switching module does not match the interface standard of the earphone plug.

In addition, the present invention also discloses a mobile phone, which is equipped with the above-mentioned mobile phone earphone access device. Compared with the prior art, the beneficial effects of the invention are:

The mobile phone earphone access device of the present invention comprises a headphone jack, an audio plus code decoder and a switch switching module, wherein the switch switching module is configured to switch the connection mode to and when the connection mode of the connected headphone plug does not match The interface standard of the headphone plug conforms to the connection mode. That is, the mobile phone earphone access device of the present invention can switch between the connection modes corresponding to different interface standards, can be compatible with the earphones of different interface standards, expands the use range of the mobile phone earphone and the mobile phone, and provides the user with more convenience and more. Intimate service. DRAWINGS

FIG. 1 exemplarily illustrates a schematic diagram of each segment of a 3-segment earphone interface;

FIG. 2 exemplarily depicts a schematic diagram of each segment of a 4-segment earphone interface;

FIG. 3 exemplarily depicts a structural diagram of a 2.5 mm mobile phone earphone access device;

FIG. 4 exemplarily describes a structural diagram of a 3.5 mm mobile phone earphone access device;

FIG. 5 exemplarily depicts a flow chart of a method for accessing a mobile phone headset. detailed description

The present invention will be further described in detail below with reference to the drawings in conjunction with the specific embodiments. The mobile phone earphone access device of the present invention comprises a headphone jack (2), an audio plus code decoder (3) and a switch switching module, wherein the audio add code decoder (3) is used for adding and decoding audio data, the earphone socket (2) being connected to the audio plus code decoder (3) through a switch switching module, the earphone socket (2) for connecting a headphone plug (1), the switch switching module being used in the connection mode and the inserted earphone plug ( 1) If the interface standard does not match, switch the connection mode to the connection mode that matches the interface standard of the headphone plug (1);

Wherein, the connection mode of the switch switching module is consistent with the interface standard of the inserted earphone plug (1): the switch switching module is in the connection mode, and each signal end of the earphone socket (2) and the audio plus code decoder The corresponding signal ends of (3) are connected. As shown in Figure 1, the three-stage mobile phone headphone interface is defined as "MIC/MONO/GND" for the tip/middle/end segments of the foreign standard, that is, the tip is a microphone, and the middle is the audio input channel of the mono MONO. For the signal loop "ground".

For most other audio equipment, such as audio equipment, the tip/central/end segments are defined as "L/R/GND", that is, the tip is the stereo left channel, the middle ring is the stereo right channel, and the end is the signal loop. ".

China YD/T 1885-2009 "Mobile Communications Handset Headset Interface Technical Requirements and Test Methods" stipulates that the tip/middle/end segments are defined as "L/R/GND", that is, the tip is stereo left channel, Central For the stereo right channel, the end is the signal loop "ground".

As shown in Figure 2, for the 4-segment mobile phone headset interface, there are two definitions of the foreign common standard definition tip/middle ring 1 or the middle 2 end segment. For the 2.5mm headphone jack, it is "MIC/R/L/GND", for 3.5mm headphone jack is "L/R/GND/MIC"

China YD/T 1885-2009 "Technical Requirements and Test Methods for Headset Interfaces of Mobile Communication Handsets" stipulates that the tip/center 1/center 2/end segments are defined as "L/R/MIC/GND".

The definitions of the domestic and foreign standards for the 3-segment mobile phone headset interface are shown in Table 1:

Table 1

The definitions of the domestic and foreign standards for the 4-segment mobile phone headset interface are shown in Table 2:

Standard concentric connector interface middle ring 1 middle ring 2 end

Specification

China 2.5mm LR MIC GND 3.5 mm

International 2.5 mm MIC R L GND

3.5 mm LR GND MIC can be seen from the comparison of Table 1 and Table 2. Although there are these differences in the definition of common interface standards at home and abroad, the standard for domestic and foreign interfaces for mobile phone headsets with 2.5mm or 3.5mm interfaces is The rules can be followed.

At the same time, as can be seen from Figure 1, Figure 2, Table 1, Table 2, the main difference between the 3-segment mobile phone headset and the 4-segment mobile phone headset interface is that the middle ring 2 and the end of the 4-segment mobile phone headset are equivalent to the end of the 3-segment mobile phone headset. The length of the 3 segment mobile phone headset is divided into two, adding the Central 2 area, forming a 4-segment mobile phone headset.

Generally, the 2.5mm and 3.5mm interfaces are not provided on the same mobile phone. Therefore, according to the regular difference of the 2.5mm and 3.5mm interface mobile phone headsets, the present invention provides a mobile phone earphone compatible with domestic and foreign interface standards. Into the device.

The technical solution of the present invention will be described in detail below through specific embodiments.

Embodiment 1:

The mobile phone earphone access device of the embodiment of the present invention includes a headphone jack 2, an audio plus code decoder 3, and a switch switching module, wherein the audio plus code decoder 3 is used for adding and decoding audio data, and the earphone jack 2 is switched. The switching module is connected to the audio plus code decoder 3, and the earphone socket 2 is used for connecting the earphone plug 1, and the switch switching module is configured to switch the connection mode when the connection mode thereof is not in conformity with the interface standard of the inserted earphone plug 1. a connection mode to the interface standard of the earphone plug 1; wherein, the connection mode of the switch switching module conforms to the interface standard of the inserted earphone plug 1 means: the switch switching module is in the connection mode, the earphone socket Each signal terminal of 2 is connected to a corresponding signal terminal of the audio plus code decoder 3.

The mobile phone earphone access device further includes a baseband processor 4, the baseband processor 4 is connected to the switch switching module, and is connected to the earphone socket 2 for detecting the earphone socket 2 and the earphone plug 1 When connected, whether the connection mode of the switch switching module matches the interface standard of the headphone plug 1, and when the connection mode of the switch switching module does not match the interface standard of the headphone plug 1, the switching signal is output to the switch switching module.

The switch switching module includes analog switches SW1 and SW2, respectively connected to the baseband processor 4, for switching the connection mode according to the switching signal output by the baseband processor 4, and connecting the audio plus code decoder 3 and the earphone The corresponding signal end of the socket 2 makes the connection mode of the switch switching module conform to the interface standard of the earphone plug 1.

The switch switching module includes two connection modes, a first connection mode and a second connection mode, respectively corresponding to different interface standards. In this embodiment, the first connection mode and the second connection mode of the switch switching module respectively correspond to the domestic interface standard and the foreign interface standard.

Since the existing mobile phone earphones have two interfaces of 2.5 mm and 3.5 mm, the earphone wired access device of the present invention comprises a 2.5 mm mobile phone earphone access device and a 3.5 mm mobile phone earphone access device.

As shown in FIG. 3, a 2.5mm mobile phone earphone access device according to an embodiment of the present invention includes an earphone socket 2, a switch switching module, an audio plus code decoder 3, and a baseband processor 4.

Taking a 2.5mm mobile phone headset as an example, the earphone socket 2 includes six signal terminals, the signal terminal 1 is connected to the earphone plug end, the signal terminal 2 is connected to the earphone plug middle ring 2, the signal terminal 3 and the signal terminal 5 and the earphone plug ring are connected. 1 connected, signal terminal 4 and signal terminal 6 are connected to the headphone plug tip.

The audio plus code decoder 3 has four signal terminals, which are GND, R, MIC, and L signal terminals. The first signal end is MIC and the second signal end is L.

The baseband processor 4 includes an Ear-Det earphone detection signal terminal and a Channel-Ctl channel control signal terminal.

The audio plus code decoder can be part of the baseband processor or it can be independent of the baseband processor.

As shown in Figure 3, in the 2.5mm mobile phone headset access device, the signal terminal 1 of the earphone socket 2 The GND signal end of the audio plus code decoder 3 is connected, the signal end 3 of the headphone jack 2 is connected to the R signal end of the audio add code decoder 3, and the signal end 4 of the headphone jack 2 is passed through the analog switch SW1 at the MIC of the audio add code decoder 3. The signal terminal 2 and the L signal terminal are switched, and the signal terminal 2 of the headphone jack 2 can be switched between the MIC signal end and the L signal end of the audio add code decoder 3 through the analog switch SW1.

The Ear-Det signal terminal of the baseband processor 4 is connected to the signal terminal 6 of the headphone jack 2, and Channel_Ctl is used to output a switching signal to SW1 and SW2 of the switch switching module.

After the 2.5mm, 4-segment mobile phone headset is inserted into the earphone socket 2, the baseband processor 4 detects that the earphone has been inserted. If the standard and inserted mobile phone earphones of the current earphone access device do not match, the earphone access device needs to be switched to Another interface standard, Channel_Ctl signal output high / low.

If the current standard of the earphone access device matches the inserted mobile phone headset, it can be used without switching.

Whether the baseband processor 4 outputs a high level or a low level can be determined according to the specific design of the product. In this embodiment, it is defined that when the earphone access device needs to switch to the foreign interface standard, the output is high level; when the earphone access device needs to be switched When the domestic standard interface is on time, the output is low.

At the same time, when the level is high, the analog switches SW1 and SW2 are in the first connection mode, SW1 is connected to the first signal end of the audio plus code decoder 3, and SW2 is connected to the second signal end of the audio plus code decoder 3; The analog switches SW1 and SW2 are in the second connection mode, SW1 is connected to the second signal terminal of the audio plus code decoder 3, and SW2 is connected to the first signal terminal of the audio plus code decoder 3.

In this embodiment, the first signal end of the audio add code decoder 3 is the MIC signal end, and the second signal end is the L signal end.

When the earphone access device switches to the foreign interface standard, the Channel Ctl signal terminal of the baseband processor 4 outputs a high level. After the baseband processor 4 outputs a high level, the analog switch SW1 turns on the signal terminal 4 of the headphone jack 2 to connect with the headphone tip and the MIC signal end of the audio plus code decoder 3, and the analog switch SW2 turns on the signal end 2 of the headphone jack 2 and The ring 2 of the earphone is connected to the L signal terminal of the audio plus code decoder 3.

At this time, the 2.5mm, 4-segment mobile phone earphone jack is "MIC/R/L/GND" from the tip to the end. When the earphone access device switches to the domestic interface standard, the baseband processor outputs a low level, and the analog switch SW1 turns on the signal terminal 4 of the earphone socket 2 (ie, the earphone tip) and the L signal terminal of the audio plus code decoder 3, and the analog switch SW2 Turn on the signal terminal 2 of the headphone jack 2 (ie, the ring 2 in the earphone) and the MIC signal end of the audio plus code decoder 3.

At this time, the 4-stage mobile phone earphone jack is "L/R/MIC/GND" from the tip to the end. Embodiment 2:

As shown in FIG. 3, a 2.5mm mobile phone earphone access device according to an embodiment of the present invention, for a 2.5mm, 3-segment earphone, the end is equivalent to the combination of the end of the 4-segment earphone and the middle ring 2, so the mobile phone is 2.5mm. In the earphone access device, when the three-segment earphone is inserted, the interface 1 and the signal terminal 2 of the earphone socket are connected to the end of the 3-segment earphone, and since the interface 1 is connected to the GND signal end of the audio plus code decoder, no matter how the SW2 is Switching, the end of the headphone jack is GND.

If the mobile phone earphone access device switches to the foreign interface standard, the analog switch SW1 is connected to the signal terminal 4 and the MIC signal terminal of the earphone socket, and the 3-segment earphone socket is "MIC/R/GND" from the tip to the end, and the middle ring is single. Channel R, the 3-segment headphone jack can also be expressed as "MIC/MONO/GND" from the tip to the end. 3-stage, 2.5mm headphones for international interface standards.

If the mobile phone earphone access device is switched to the domestic interface standard, the analog switch SW1 is connected to the signal terminal 4 and the L signal terminal of the earphone socket, and the 3-segment earphone socket is "L/R/GND" from the tip to the end. A 3-band, 2.5mm headset for domestic interface standards and 2.5-inch headphones for most other audio equipment.

In summary, it can be seen that the 2.5 mm mobile phone earphone access device of the present invention is applicable to both the 3-segment earphone and the 4-segment earphone. Embodiment 3:

As shown in FIG. 4, in a 3.5mm mobile phone earphone access device according to an embodiment of the present invention, the earphone socket 2 includes six signal terminals, the signal terminal 1 is connected to the earphone plug end, and the signal terminal 2 is connected to the earphone plug middle ring 2, and the signal is connected. The terminal 3 and the signal terminal 5 are connected to the ring 1 of the earphone plug, and the signal terminal 4 and the signal terminal 6 are connected to the earphone plug tip.

The audio plus code decoder 3 has four signal terminals, which are L, R, GND and MIC signal terminals. The first signal end is MIC and the second signal end is GND.

The signal end 3 of the headphone jack 2 is connected to the R signal end of the audio plus code decoder 3, the signal end 4 of the headphone jack 2 is connected to the L signal end of the audio plus code decoder 3, and the signal end 1 of the headphone jack 2 is passed through the analog switch SW1. Switching between the GND signal terminal of the audio plus code decoder 3 and the MIC signal terminal, the signal terminal 2 of the headphone jack 2 can be switched between the GND signal terminal and the MIC signal terminal of the audio adder decoder 3 through the analog switch SW2.

The Ear-Det signal terminal of the baseband processor 4 is connected to the signal terminal 6 of the headphone jack 2, and Channel_Ctl is used to control the switching of the analog switch SW1 and the analog switch SW2.

After the 3.5mm, 4-segment mobile phone headset is inserted into the earphone socket 2, the baseband processor 4 detects that the earphone has been inserted. If the standard and inserted mobile phone earphones of the current earphone access device do not match, it is necessary to switch to another connection mode. Then the Channel_Ctl signal terminal outputs a high level/low level.

Whether the baseband processor outputs a high level or a low level can be determined according to the specific design of the product. In this embodiment, when the 3.5mm mobile phone earphone access device needs to be switched to the foreign standard connection mode, the output is high; when the 3.5mm mobile phone When the earphone access device needs to switch to the domestic standard connection mode, it outputs a low level. When the high level is defined at the same time, the analog switches SW1 and SW2 are in the first connection mode, SW1 is connected to the first signal end of the audio plus code decoder 3, and SW2 is connected to the second signal end of the audio plus code decoder 3; The switches SW1 and SW2 are in the second connection mode, SW1 is connected to the second signal terminal of the audio plus code decoder 3, and SW2 is connected to the first signal terminal of the audio plus code decoder 3.

In this embodiment, the first signal end of the audio add code decoder 3 is the MIC signal end, and the second signal end is the GND signal end.

In this embodiment, when the 3.5mm earphone access device is switched to the foreign interface standard, the baseband processor outputs a high level, and the analog switch SW1 is controlled to turn on the signal end 1 of the earphone jack 2 (ie, the end of the earphone) and the audio plus code decoder 3 The MIC signal terminal, the analog switch SW2 is turned on at the signal terminal 2 of the headphone jack 2 (ie, the ring 2 in the earphone) and the GND signal terminal of the audio plus code decoder 3.

At this time, the 3.5mm, 4-segment mobile phone earphone jack is "L/R/GND/MIC" from the tip to the end. When the 3.5mm mobile phone earphone access device switches to the domestic interface standard, the baseband processor outputs a low level, and the analog switch SW1 is controlled to turn on the signal terminal 1 of the earphone socket 2 (ie, the earphone end) and the GND signal end of the audio plus code decoder 3. The analog switch SW2 turns on the signal terminal 2 of the headphone jack 2 (ie, the ring 2 in the earphone) and the MIC signal end of the audio adder decoder 3.

At this time, the 3.5mm, 4-segment mobile phone earphone jack is "L/R/MIC/GND" from the tip to the end. Embodiment 4:

As shown in Figure 4, for the 3.5mm, 3-segment headphone jack, the end is equivalent to the combination of the end of the 4-segment earphone and the middle ring 2, so in the 3.5mm mobile phone earphone access device, when the 3-segment earphone is inserted, The signal terminal 1 and the signal terminal 2 of the earphone socket are connected to the end of the 3-segment earphone. Whether it is a domestic standard earphone or a foreign standard earphone, no matter how the SW1 and the SW2 are switched, the end of the earphone is connected with the GND. At this time, 3.5 mm The 3-stage headphone jack is "L/R/GND" from the tip to the end. It can be used for 3.5mm headphones of domestic standard 3.5mm, 3-band headphones and most audio equipment. A mobile phone according to an embodiment of the present invention is equipped with the above-mentioned mobile phone earphone access device.

A mobile phone equipped with the above-mentioned mobile phone earphone access device can switch the connection mode to the connection mode conforming to the interface standard of the earphone plug when the connection mode is not in conformity with the interface standard of the earphone plug. That is, mobile phone headsets compatible with domestic interface standards and foreign interface standards, users do not need to configure a complete set of mobile phones and mobile phone headsets, you can enjoy the audio, conversation and other services provided by mobile phones, expand the use of mobile phones and mobile phone headsets, bring users Convenience, to provide users with more intimate services. Embodiment 5:

As shown in FIG. 5, the mobile phone headset access method of an embodiment includes the following steps: Step 101: Insert the mobile phone headset into the earphone socket.

Step 102: The mobile phone earphone access device detects that the earphone is inserted into the earphone socket.

2.5mm mobile phone headset access device detection international interface standard in the MIC channel, the domestic interface standard in the L channel; 3.5mm mobile phone headset access device detection domestic and international interface standards are in the L channel.

Step 103, prompting the user to input the model of the mobile phone headset.

The phone headset model can be either a standard definition or a user-defined specification number. In step 104, an echo test is performed. If the echo test fails, the process proceeds to step 106, and the echo test passes to step 105.

The echo test can be performed directly after the user inputs the model of the mobile phone headset, or after prompting the user to confirm.

Step 105, the echo test passes, the system records the current mobile phone headset model and interface standard, and the mobile phone headset is successfully accessed.

The echo test passes, indicating that the default interface standard of the mobile phone headset access device conforms to the interface standard of the mobile phone headset, and the current mobile phone headset can be used normally.

The default standard for mobile phone headset access devices can be domestic interface standards or foreign connections. The port standard, the user can set the default standard according to the requirements.

The system records the current mobile phone headset model and interface standard. After the headset is inserted and the user inputs the same mobile phone headset model again, the mobile phone headset access device switches to the connection mode corresponding to the interface standard of the mobile phone headset, simplifying the operation steps. , saving time and bringing convenience to users.

Step 106, the echo test fails, and the connection mode is switched.

The echo test failed, indicating that the default interface standard of the current mobile phone headset access device does not meet the interface standard of the mobile phone headset, and the current headset cannot be used normally.

The switch connection mode can be automatically switched after the echo test fails, or it can be prompted to confirm the switch.

自动Automatic switching or manual switching mode can be set by users according to requirements, which can provide users with more convenient and more humanized services.

The specific method for switching the connection mode has been described in detail above, and will not be described herein.

Step 107: After switching the connection mode, continue the echo test. If the test passes, go to step 105. If the test still fails, go to step 108.

The international interface standard 3.5mm 4-segment earphones, the international interface standard 2.5mm 3-segment and 4-segment headphones, the 2.5mm and 3.5mm 4-segment headphones of the domestic interface standard can be detected by the echo test.

Step 108, the test still fails, and the left and right channel voice test is performed. If the left and right channel voice test passes, go to step 109; if the left and right channel voice test fails, go to step 110.

The left and right channel voice test can be performed automatically after the failure of the echo test, or the user can be prompted to confirm, and the user can set it according to the requirements, providing the user with a more convenient and more personalized service.

Step 109: If the left and right channel voice test passes, the system records the current mobile phone headset model and connection mode, and accesses according to the corresponding device. For the 2.5mm mobile phone headset access device, the system judges it to be 2.5mm, 3 segment mobile phone headset or other audio equipment such as audio equipment for the domestic interface standard; for the 3.5mm mobile phone headset access device, the system discriminates as a domestic interface Headphones for standard 3.5mm, 3-band headphones or other audio equipment such as most audio equipment.

Step 110: If the left and right channel voice test fails, the current mobile phone headset is unavailable. The mobile phone earphone access device of the present invention comprises a headphone jack, an audio plus code decoder and a switch switching module, wherein the switch switching module is configured to switch the connection mode to and when the connection mode of the connected headphone plug does not match The interface standard of the headphone plug conforms to the connection mode. That is, the mobile phone earphone access device of the present invention can switch between the connection modes corresponding to different interface standards, can be compatible with the earphones of different interface standards, expands the use range of the mobile phone earphone and the mobile phone, and provides the user with more convenience and more. Intimate service. However, this is only an example for ease of understanding, and the specific implementation of the present invention should not be construed as being limited to the description. It is to be understood by those skilled in the art that various changes and substitutions may be made without departing from the spirit and scope of the invention.

Claims

Claim

A mobile phone earphone access device, wherein the mobile phone earphone access device comprises: a earphone socket (2), an audio plus code decoder (3), and a switch switching module;

The audio plus code decoder (3) is configured to decode and decode audio data, and the earphone socket (2) is connected to the audio plus code decoder (3) through a switch switching module;

The earphone socket (2) is configured to connect the earphone plug (1);

The switch switching module is configured to switch the connection mode to a connection mode conforming to the interface standard of the earphone plug (1) when the connection mode thereof is not in conformity with the interface standard of the inserted earphone plug (1);

The connection mode of the switch switching module is consistent with the interface standard of the inserted earphone plug (1): the switch switching module is in the connection mode, the signal terminals of the earphone socket (2) and the audio plus code decoder (3) The corresponding signal ends are connected.

2. The mobile phone earphone access device according to claim 1, wherein the mobile phone earphone access device further comprises a baseband processor (4), wherein the baseband processor (4) is connected to the switch switching module, and simultaneously The earphone socket (2) is connected to detect whether the earphone socket (2) is connected to the earphone plug (1), whether the connection mode of the switch switching module matches the interface standard of the earphone plug (1), and the connection mode of the switch switching module When the interface standard of the headphone plug (1) does not match, the switching signal is output to the switch switching module.

3. The mobile phone earphone access device according to claim 2, wherein the switching signal output by the baseband processor (4) is a high level or a low level.

4. The mobile phone earphone access device according to claim 3, wherein the switch switching module comprises analog switches SW1 and SW2, and the analog switches SW1 and SW2 are respectively connected to a baseband processor (4) for Switching the connection mode according to the switching signal output by the baseband processor (4), connecting the corresponding signal end of the audio plus code decoder (3) and the headphone jack (2), so that the connection mode of the switch switching module and the headphone plug (1) The interface standard is consistent.

The mobile phone earphone access device according to claim 4, wherein the switch switching module comprises a first connection mode and a second connection mode, and when the base processor (4) outputs a high level, the simulation The switches SW1 and SW2 are switched to the first connection mode, that is, SW1 is connected to the first signal end of the audio plus code decoder (3), and SW2 is connected to the second signal end of the audio plus code decoder (3);

When the baseband processor (4) outputs a low level, the analog switches SW1 and SW2 are in the second connection mode, that is, the SW1 is connected to the second signal end of the audio plus code decoder (3), and the SW2 and the audio plus code decoder (3) The first signal ends are connected.

The mobile phone earphone access device according to claim 5, wherein the mobile phone earphone access device comprises a 2.5mm mobile phone earphone access device, and the audio plus code decoding is performed in the 2.5mm mobile phone earphone access device. The first signal end MIC signal end of the device (3), the second signal end is an L signal end, and the audio add code decoder (3) further includes a GND signal end and an R signal end;

The first signal end of the earphone socket (2) of the 2.5mm mobile phone earphone access device is connected to the GND signal end of the audio plus code decoder (3);

The second signal end of the earphone socket (2) of the 2.5mm mobile phone earphone access device is respectively connected to the MIC signal end or the L signal end of the audio plus code decoder (3) through the switching of the analog switch SW2;

The third signal end of the earphone socket (2) of the 2.5mm mobile phone earphone access device is connected to the R signal end of the audio plus code decoder (31);

The fourth signal end of the earphone socket (2) of the 2.5mm mobile phone earphone access device is connected to the MIC signal end or the L signal end of the audio plus code decoder (3) through the switching of the analog switch SW1;

The sixth signal end of the earphone socket (2) of the 2.5mm mobile phone earphone access device is connected to the earphone detection Ear-Det signal end of the audio plus code decoder (3);

Wherein, when the switch switching module is in the first connection mode, the fourth letter of the earphone socket (2) The terminal end is connected to the MIC signal end through the SW1, and the second signal end of the earphone socket (2) is connected to the L signal end through the SW2; when the switch switching module is in the second connection mode, the fourth signal end of the earphone socket (2) passes SW1 is connected to the L signal end, and the second signal end of the headphone jack (2) is connected to the MIC signal end through SW2.

The mobile phone earphone access device according to claim 5, wherein the earphone wired access device further comprises a 3.5mm mobile phone earphone access device, the 3.5mm mobile phone earphone access device, and the audio plus code decoding device. The first signal end of the device (3) is a MIC signal end, the second signal end is a GND signal end, and the audio add code decoder (3) further includes an L signal end and an R signal end;

The first signal end of the earphone socket (2) of the 3.5mm mobile phone earphone access device is connected to the GND signal end or the MIC signal end of the audio plus code decoder (3) through the switching of the analog switch SW1;

The second signal end of the earphone socket (2) of the 3.5mm mobile phone earphone access device is respectively connected to the GND signal end or the MIC signal end of the audio plus code decoder (3) through the switching of the analog switch SW2;

The third signal end of the earphone socket (2) of the 3.5mm mobile phone earphone access device is connected to the R signal end of the audio plus code decoder (3);

The fourth signal end of the earphone socket (2) of the 3.5mm mobile phone earphone access device is connected to the L signal end of the audio plus code decoder (3);

The sixth signal end of the earphone socket (2) of the 3.5mm mobile phone earphone access device is connected to the earphone detection Ear-Det signal end of the audio plus code decoder (3);

Wherein, when the switch switching module is in the first connection mode, the first signal end of the earphone socket (2) is connected to the MIC signal end through the SW1, and the second signal end of the earphone socket (2) is connected to the GND signal end through the SW2; When the switch switching module is in the second connection mode, the first signal end of the earphone socket (2) is connected to the GND signal end through SW1, and the second signal end of the earphone socket (2) is connected to the MIC signal end through the SW2.

8. A method for accessing a mobile phone headset, the method comprising: the switch switching module switching the connection mode to the earphone plug (1) when the connection mode thereof does not conform to the interface standard of the earphone plug (1) The connection mode that the interface standard conforms to;

Wherein, the connection mode of the switch switching module is consistent with the interface standard of the earphone plug (1): when the switch switching module is in the connection mode, each signal end of the earphone socket (2) and the audio plus code decoder ( The corresponding signal terminals of 3) are connected.

The mobile phone headset access method according to claim 8, wherein the method further comprises the following steps:

The baseband processor (4) outputs a switching signal to the switch switching module when the connection mode of the switch switching module does not match the interface standard of the earphone plug (1).

A mobile phone, characterized in that the mobile phone is equipped with the mobile phone earphone access device according to any one of claims 1-7.