CN101232742A - Headphone unit with switchable signal transmission - Google Patents

Abstract

The present invention discloses an earphone device capable of switchable signal transmission, comprising an earphone terminal including a plurality of signal interfaces for transmitting a plurality of signals; and a switching unit coupled to the earphone connector for switching the order in which the plurality of signal interfaces transmit the plurality of signals according to a control signal.

Description

Headphone unit with switchable signal transmission

technical field

The invention relates to an earphone device, in particular to an earphone device with switchable signal transmission.

Background technique

Headphones are one of the indispensable accessories in portable electronic products. The structure of the earphone generally includes an earphone terminal for receiving electronic signals, and a speaker for converting the electronic signals into sound wave signals. In terms of function, earphones can be divided into two types: monophonic and stereo. Monophonic earphones have only one speaker, and their main purpose is to output voice calls; stereo earphones have two speakers that can transmit left and right channel signals, and are mainly for multimedia entertainment. In recent years, with the rapid popularization of mobile phones, a combination of earphones and microphones (also known as a headset set; Headset) is widely used in mobile phones. Through the headset group, the user can use the hands-free function of the mobile phone to achieve the purpose of safety and convenience in the call. The earphone terminals of the headset group can be divided into three-section type and four-section type, and their sizes are the same. The three-section type is suitable for monophonic headset groups, and the four-section type is suitable for stereo headset groups. Each section on the earphone terminal is a signal interface, through which the earphone socket connected to the electronic product (such as mobile phone, MP3 player, PDA, etc.) can interact with the electronic product to transmit electronic signals.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a conventional three-section earphone terminal 30 , a four-section earphone terminal 40 and a four-section earphone jack 50 . The connectors of the three-section earphone terminal 30 and the four-section earphone terminal 40 have the same size, and both can be inserted into the four-section earphone jack 50 . The three-section earphone terminal 30 includes three signal interfaces S3_1-S3_3, which are respectively used to transmit a microphone signal MIC and a monophonic signal (such as a left-channel signal LCH or a right-channel signal RCH, which is monophonic to the user. There is no difference, depending on the wearing conditions of the user) and a ground signal GND; wherein, the signals transmitted by the signal interfaces S3_1 and S3_2 can be exchanged. The four-section earphone 40 includes four signal interfaces S4_1-S4_4, which are respectively used to transmit the right channel signal RCH, the left channel signal LCH, the microphone signal MIC and the ground signal GND; wherein, the signals transmitted by the signal interfaces S4_1-S4_3 can be exchange. The four-section earphone jack 50 includes four signal interfaces S5_1-S5_4, which are respectively coupled to an audio processing unit in the mobile phone for outputting left and right channel signals or receiving microphone signals.

In order to process sound signals correctly, the signals transmitted by the four-section earphone socket 50 will correspond to the three-section earphone terminal 30 or the four-section earphone terminal 40 . However, since the signal configurations of the earphone sockets of different mobile phones may be different, when users purchase mobile phones, they also need to purchase earphones provided by the original factory. If the signal configuration defined between the earphone socket and the earphone is different, when the user uses the earphone to answer the phone or listen to music, the signal of the left and right channels may be different from the original sound source. For example, if the default signal configuration of the system attached to the four-section earphone socket 50 is: signal interface S5_1-left channel signal LCH; signal interface S5_2-right channel signal RCH; signal interface S5_3-microphone signal MIC; Interface S5_4-ground signal GND. As shown in Figure 1, if the signal configuration of the four-section earphone terminal 40 is: signal interface S4_1-right channel signal RCH; signal interface S4_2-left channel signal LCH; signal interface S4_3-microphone signal MIC; signal interface S4_4- Ground signal GND. When the four-section earphone terminal 40 is inserted into the four-section earphone jack 50, the signal interfaces S4_1-S4_4 are fitted into the signal interfaces S5_1-S5_4 respectively. Since the configuration of the left and right channel signals is opposite, the system transmits the left audio signal through the signal interface S5_1. The channel signal LCH will pass through the signal interface S4_1 , and the right channel speaker defined in the four-section earphone terminal 40 will emit sound. In this case, the left and right channels output by the four-section headphone terminal 40 will be opposite to the original signal. Of course, for the user, the difference between the left and right channel signals is not large, and there is no obvious impact. .

However, according to the signal configuration of the above-mentioned four-section earphone socket 50, if the signal configuration of the three-section earphone terminal 30 is: signal interface S3_1-microphone signal MIC; signal interface S3_2-left channel signal LCH; signal interface S3_3-ground signal GND . When the three-section earphone terminal 30 is inserted into the four-section earphone jack 50 , the signal interfaces S3_1 and S3_2 are fitted into the signal interfaces S5_1 and S5_2 , and the signal interface S3_3 is fitted into the signal interfaces S5_3 and S5_4 . In this situation, when the mobile phone transmits the left channel signal LCH through the signal interface S5_1 , since the signal interface S3_1 is a microphone coupled to the three-section earphone terminal 30 , the left channel sound cannot be emitted. Similarly, the signal interface S5_3 cannot correctly receive the microphone signal MIC, so that the user's voice signal cannot be sent correctly, and the microphone of the three-section earphone terminal 30 cannot perform normal functions, so that the user cannot use the three-section earphone terminal 30 to achieve hands-free The function of the earpiece.

It can be seen from the above that the signal configuration of the signal interface of the earphone and the earphone socket must be the same, so that the earphone can function normally. However, manufacturers of earphone sockets and earphones do not have uniform specifications for signal configuration, which causes inconvenience to consumers in purchasing and using earphones. Taking mobile phones as an example, consumers need to purchase additional headsets produced by the original manufacturer. If they use headsets produced by other manufacturers, they often cannot receive sound successfully or the microphone does not work. For users who have multiple mobile phones, it is necessary to purchase the original headset sets of each mobile phone respectively, which causes a lot of inconvenience to the users.

Contents of the invention

Therefore, the object of the present invention is to provide an earphone device with switchable signal transmission to solve the above problems.

The purpose of the present invention is achieved by providing a switchable signal transmission headphone device, including a headphone terminal, including a plurality of signal interfaces (interfaces), used to transmit a plurality of signals; and a switching unit, coupled The earphone connector is used for switching the sequence of the multiple signal interfaces transmitting the multiple signals according to a control signal.

Description of drawings

Fig. 1 is the connection signal diagram of existing three-section earphone and one four-section earphone and one four-section earphone socket;

FIG. 2 is a schematic diagram of an earphone device with switchable signal transmission according to the present invention;

3 is a schematic diagram of a four-section earphone with switchable signal transmission according to the present invention;

Fig. 4 is a signal transmission mode of the four-section earphone according to Fig. 3 of the present invention;

5 is a schematic diagram of a three-section earphone with switchable signal transmission according to the present invention;

FIG. 6 is a signal transmission mode of the three-section earphone shown in FIG. 5 according to the present invention.

Description of main component symbols:

30, 500 Three-section earphones 40, 300 Four-section earphones

50 Four-section headphone socket 200 Headphone device

210, 310, 510 headphone terminal 220, 320, 520 switching unit

LCH Left channel signal RCH Right channel signal

MIC microphone signal GND ground signal

SC Control Signal

S41, S42, S43, S44, S31, S32, S33, S3_1, S3_2, S3_3, signal interface

S4_1, S4_2, S43, S4_4, S5_1, S5_2, S5_3, S5_4

SW31, SW32, SW33, SW41, SW42, SW43, SW44 switches

Detailed ways

Please refer to FIG. 2 . FIG. 2 is a schematic diagram of an earphone device 200 with switchable signal transmission according to the present invention. The earphone device 200 can switch signal transmission inside the earphone device 200 , and includes an earphone terminal 210 and a switching unit 220 . The headphone terminal 210 is a four-section or three-section headphone terminal, which includes a plurality of signal interfaces for transmitting related signals, such as a left channel signal LCH, a right channel signal RCH, a microphone signal MIC and a ground signal GND . The switching unit 220 is coupled to the earphone terminal 210 and is used for switching the sequence of signals transmitted by the signal interface of the earphone terminal 210 according to a control signal SC.

Take a four-section earphone as an example. Please refer to FIG. 3 , which is a partial schematic diagram of a four-section earphone 300 with switchable signal transmission according to the present invention. In the four-section earphone 300, an earphone terminal 310 is similar to the four-section earphone terminal 40 in FIG. Interfaces S41-S44. Each switch can only transmit one signal, such as the left channel signal LCH, the right channel signal RCH, the microphone signal MIC or the ground signal GND, and each signal can only be selected by one of the switches SW41-SW44 at the same time. That is to say, each signal corresponds to only one signal interface. Therefore, according to the relationship between the signal interfaces S41 - S44 and the signals LCH, RCH, MIC and GND, 16 signal transmission modes can be obtained. The user can generate a control signal SC through a control signal generator (such as a switch key), and control the switches SW41~SW44 to switch the signal transmission mode to match the signal configuration of the connected earphone socket. One of the signal transmission modes is as shown in the figure 4 shows the signal transmission mode. According to the transmission mode shown in FIG. 4 , the signal interfaces S41 - S44 respectively transmit the left channel signal LCH, the microphone signal MIC, the right channel signal RCH and the ground signal GND.

By controlling the switching unit 320 with the control signal SC, the user can select a suitable signal transmission mode, so that the four-section earphone 300 can be adapted to earphone sockets with different signal configurations, thereby improving convenience and reducing user troubles. In addition, the present invention is also applicable to the three-section earphone. Please refer to FIG. 5 , which is a partial schematic diagram of a three-section earphone 500 with switchable signal transmission according to the present invention. In the three-section earphone 500, an earphone terminal 510 is similar to the three-section earphone terminal 30 in FIG. 1, and includes three signal interfaces S31-S33; a switching unit 520 includes three switches SW31-SW33, respectively coupled to the signal interface S31 ~S33. The three-section earphone 500 can also switch between different signal transmission modes according to the control signal SC, and one of the signal transmission modes is shown in FIG. 6 . The method of switching the signal transmission mode of the three-section earphone 500 is roughly the same as that of the aforementioned four-section earphone. The difference is that the left channel signal LCH and the right channel signal RCH can be selected and output, so that there are 12 signal transmission modes in total. combination. Therefore, similar to the four-section earphone 400, the three-section earphone 500 can also control the switching unit 520 through the control signal SC to select a suitable signal transmission mode, thereby improving convenience.

Since the three-section earphone terminal or four-section earphone terminal on the market, the signal interface of the last section is limited to transmit the ground signal GND, therefore, the electronic device with three-section earphone jack or four-section earphone jack, its earphone The socket is also configured to match the signal interface of the headphone terminal, and the signal interface of the last section is set to ground. Furthermore, when the configurations of the left channel signal LCH and the right channel signal RCH are inconsistent between the headphone socket and the headphone terminal, the user can hear the sound, regardless of whether the left and right channel signals are correctly configured. However, whether the signal configuration of the microphone signal MIC is correct or not will seriously affect whether the user can transmit his own conversation voice through the earphone terminal.

In order to simplify the number of times the control switch unit selects the appropriate signal transmission mode, the signal adjustment mode for the three-section earphone terminal can be set to the following two modes: (1) The first section signal interface, the second section signal interface and the third section signal interface They are respectively used to transmit channel signals, microphone signals and ground signals; (2) the first section signal interface, the second section signal interface and the third signal interface are respectively used to transmit microphone signals, channel signals and ground signals. For the four-section headphone terminal, the signal adjustment mode can be set to the following three modes: (1) The signal interface of the first section and the signal interface of the fourth section are used to transmit the microphone signal and the ground signal respectively; the signal interface of the second section and the signal interface of the second section The three-section signal interface is used to transmit the channel signal; (2) The second-section signal interface and the fourth-section signal interface are used to transmit the microphone signal and the ground signal respectively, and the first-section signal interface and the third-section signal interface are used to transmit the sound (3) The signal interface of the third section and the signal interface of the fourth section are used to transmit the microphone signal and the ground signal respectively, and the signal interface of the first section and the signal interface of the second section are used to transmit the channel signal. Wherein, the channel signal can be a left channel signal or a right channel signal. In this way, the user can select a suitable signal transmission mode through the earphone device with fewer switching times.

To sum up, the present invention provides an earphone device with switchable signal transmission. The user can switch the signal transmission sequence of the signal interface of the earphone terminal through the control signal, and select a suitable signal transmission mode to match the signal configuration of the connected earphone jack. Therefore, the present invention increases the applicability of the four-section and three-section earphones to different electronic products that use earphone sockets, and improves user convenience.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims (13)

1. A headphone device capable of switching signal transmission, comprising: An earphone terminal, including multiple signal interfaces, used to transmit multiple signals; and A switching unit, coupled to the earphone terminal, is used for switching the sequence of the multiple signal interfaces transmitting the multiple signals according to a control signal. 2. The earphone device as claimed in claim 1, wherein the plurality of signals comprise a left channel signal, a right channel signal, a microphone signal and a ground signal. 3. The earphone device as claimed in claim 1, wherein the earphone terminal is a three-section earphone terminal. 4. The earphone device as claimed in claim 3, wherein the first signal interface, the second signal interface and the third signal interface of the three-section earphone terminal are respectively used to transmit a channel signal, a microphone signal and a grounding Signal. 5. The headphone device as claimed in claim 4, wherein the channel signal is a left channel signal or a right channel signal. 6. The earphone device according to claim 3, wherein the first signal interface, the second signal interface and the third signal interface of the three-section earphone terminal are respectively used to transmit a microphone signal, a channel signal and a grounding Signal. 7. The headphone device as claimed in claim 6, wherein the channel signal is a left channel signal or a right channel signal. 8. The earphone device as claimed in claim 1, wherein the earphone terminal is a four-section earphone terminal. 9. The earphone device according to claim 8, wherein the first signal interface and the fourth signal interface of the four-section earphone terminal are respectively used to transmit a microphone signal and a ground signal, and the second signal interface and the fourth The three-section signal interface is used to transmit one-channel signals. 10. The earphone device according to claim 8, wherein the second section signal interface and the fourth section signal interface of the four-section earphone terminal are respectively used to transmit a microphone signal and a ground signal, and the first section signal interface and the second section signal interface are respectively used to transmit a microphone signal and a ground signal. The three-section signal interface is used to transmit one-channel signals. 11. The earphone device according to claim 8, wherein the third signal interface and the fourth signal interface of the four-section earphone terminal are respectively used to transmit a microphone signal and a ground signal, the first signal interface and the second The two-section signal interface is used to transmit one-channel signals. 12. The earphone device according to any one of claims 9-11, wherein the channel signal is a left channel signal or a right channel signal. 13. The earphone device as claimed in claim 1, further comprising a switch key for generating the control signal.

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