CN1980488B - Method for controlling sound output - Google Patents

Abstract

A method for controlling sound output, in particular a method for controlling switching between an exclusive mode and a sharing mode of sound output; when a user selects the exclusive mode, only one of a built-in speaker, a wired headset and a wireless headset is controlled to output sound; when a user selects the sharing mode, at least two of the built-in speaker, the wired headset and the wireless headset are controlled to output sound simultaneously, so that the sound output of the built-in speaker, the wireless headset and the wired headset is more selective, thereby improving the practical function of the product.

Description

Methods of Controlling Sound Output

technical field

The present invention relates to earphone connection interfaces of sound output devices such as audio devices, hand-held music devices, and mobile phones, and in particular to a method for controlling sound output of wireless earphones, wired earphones, and built-in speakers of the above-mentioned devices.

Background technique

In general audio-visual devices, the headphone socket is often used to detect the plug-in action to switch the speaker output device. When it is detected that the earphone plug is inserted, the speaker output is cut off, which is convenient for the user to switch the sound output device.

Please refer to Figure 1, Figure 2, and Figure 3. Known sound output devices that simultaneously support wireless earphones and wired earphones are to electrically connect the left and right channel output terminals 11, 12 of the sound to the wired earphone socket 20 (as shown in FIG. 1 ) and the wireless transmission module 30 ( As shown in FIG. 2 ); and the control circuit shown in FIGS. 1 to 3 controls whether the sound signal is output via the wireless transmission module 30 . The control circuit includes a power input terminal V1 electrically connected to the CN terminal of the earphone socket 20 and a control terminal 13 via a resistor R1 (as shown in FIG. 1 ). The control terminal 13 is electrically connected to the B pole input terminal of the transistor 14; the E and C poles of the transistor 14 are respectively grounded and electrically connected to a transistor 15 through a resistor R2, and the resistor R3 and the capacitor C1 are respectively connected in series to the power supply input terminal through the resistor R2 V1; both ends of the transistor 15 are electrically connected to a power input terminal V1 and a power output terminal V2 (as shown in FIG. 3 ). The power output terminal V2 is electrically connected to the wireless transmission module 30; the wireless transmission module 30 is also electrically connected to an antenna 31 to output wireless signals (as shown in FIG. 2 ).

The operation mode of the above-mentioned known control circuit is that when the wired earphone plug is not inserted into the earphone socket 20, the CO terminal and the CN terminal of the earphone socket 20 are not conducting, and at this time the control terminal 13 is at a high potential, so that the transistor 14 is conducting. state; because the transistor 14 is in the conduction state, the transistor 15 is in the conduction state, so that the power input terminal V1 and the power output terminal V2 are in the conduction state; the power output terminal V2 can output power to the wireless transmission module 30, so that the wireless The transmission module 30 has power to transmit wireless audio signals through the antenna 31 . But when the earphone plug is inserted into the earphone socket 20, the CO end and the CN end of the earphone socket 20 are turned on, and the control terminal 13 is grounded at a low potential at this moment, causing the transistor 14 to change from the conduction state to the cut-off state, and then the transistor 15 is turned off. It also changes from the on state to the off state, so that the power input terminal V1 and the power output terminal V2 are in a non-conduction state, so that the wireless transmission module 30 cannot obtain power supply, and the antenna 31 cannot output wireless audio signals. Although the above-mentioned known design can use the detection circuit of the wired earphone plug inserted into the socket to automatically switch the wired earphone and the wireless earphone to output sound respectively, the wired earphone and the wireless earphone cannot be used at the same time. Setting control, unable to automatically detect the control, simplifying the operation.

The Taiwan Invention Patent No. 231150 that the applicant has been granted discloses a detection device and method for the sharing of an audio-visual interface socket and an earphone cable socket. The detection device detects whether the four-terminal socket is inserted into a plug. Continuous detection; otherwise, make the detection device detect whether the impedance value of the video output terminal of the four-terminal socket is greater than the set value, if it is greater than the set value, then make the detection device control the video signal output terminal to output the video signal; if not If it is greater than the set value, the detection device controls the image signal output end not to output image signals.

Contents of the invention

In order to improve the disadvantages of the known sound output device being unable to be controlled, while providing wireless earphones and wired earphones to output sound, so that a single device can be used by two people at the same time; and the function of switching must be maintained, and the present invention is proposed.

The main purpose of the present invention is to provide a method for controlling sound output, so that the sound output device supporting wireless earphones and wired earphones can be controlled by the user, and the wired earphone, wireless earphone or built-in speaker can be selected at the same time. Any two of them, or any one of them can output the sound function.

Another object of the present invention is to provide a method for controlling sound output, so that the sound output of speakers, wireless earphones, and wired earphones is more selective, so as to improve the practical functions of the products.

A sound output method of the present invention is used to make the sound output device that supports at least two of wireless earphones, wired earphones and speakers have the ability to control and select at least two of the wired earphones, wireless earphones and speakers. The function that can output sound simultaneously, is characterized in that, comprises the following steps:

(1) Make the microprocessor detect whether there is setting information for mode selection;

(2) When there is setting information of "sharing mode", the microprocessor controls at least one of the sound signal transmission end of the wireless transmission module and the speaker to transmit the sound signal, wherein the wireless transmission module transmits The sound signal is a sound carrier signal transmitted by radio, so that at least two of the wired earphones, wireless earphones and speakers can simultaneously output sound.

Wherein in the "sharing mode", the microprocessor controls the wireless transmission module to make the wireless transmission module transmit sound signals.

Wherein the microprocessor controls a power switch to conduct power to the wireless transmission module, so that the wireless transmission module transmits sound signals.

Wherein in the "sharing mode", the microprocessor controls a sound signal switch, transmits the sound signal to the speaker, and makes the speaker output sound.

Wherein in the "sharing mode", the microprocessor controls the wireless transmission module to transmit the sound signal, and controls a sound signal switch to transmit the sound signal to the speaker, even if the microprocessor passes through When the feedback interface of the wireless transmission module detects the connection information of the wireless earphone, it also makes the speaker output sound.

Wherein the feedback interface is a universal asynchronous reception and transmission bus.

Wherein the mode selection information further includes a "exclusive mode" setting information, when there is an "exclusive mode" setting information, the microprocessor controls the wireless transmission module and the sound signal transmission of the speaker Only one of the two terminals can transmit the sound signal when the earphone socket is not inserted into the earphone plug, so that only one of the wired earphone, the wireless earphone and the speaker can output sound.

Wherein in the "exclusive mode", the microprocessor controls a power switch, and when a detection circuit detects that the earphone socket is not inserted into the earphone plug, it outputs power to the wireless transmission module, so that the wireless transmission module group to transmit sound signals; when in the "share mode", the microprocessor controls the power switch to output power to the wireless transmission module, even when the detection circuit detects that the headphone socket is inserted into the headphone plug, it will Make the wireless transmission module transmit sound signals.

Wherein in the "exclusive mode", the microprocessor further controls a sound signal switch to disconnect the sound transmission signal to the speaker, unless the microprocessor detects a sound signal via the feedback interface of the wireless transmission module. When the wireless headset is not online, the sound signal switch is controlled, and the sound signal is transmitted to the speaker, so that the speaker outputs sound; when in the "sharing mode", the microprocessor further controls the sound signal switch, and transmits the sound signal To the speaker, even if the feedback interface of the wireless transmission module detects the connection information of the wireless earphone, the speaker will output sound.

Wherein the feedback interface is a universal asynchronous reception and transmission bus.

Description of drawings

For other purposes and effects of the present invention, please refer to the accompanying drawings and embodiments, which are described in detail as follows, wherein:

Fig. 1 is a partial circuit schematic diagram of a known wired earphone and wireless earphone control circuit.

Fig. 2 is a partial circuit schematic diagram of a known wired earphone and a wireless earphone control circuit.

Fig. 3 is a partial circuit schematic diagram of a conventional wired earphone and a wireless earphone control circuit.

Fig. 4 is a schematic diagram of an embodiment of a device for implementing the present invention.

Fig. 5 is a partial circuit schematic diagram of a specific embodiment of the device implementing the present invention.

Fig. 6 is a flowchart of the method of the present invention.

Detailed ways

Please refer to Figure 4. The embodiment of the device used for implementing the method of the present invention includes a microprocessor 40 that is electrically connected to a control panel 41, a power switch 32 of a wireless transmission module 30, a UART (Universal Asynchronous Receiver/Transmitter, Universal Asynchronous Receiver Transmitter), and a loudspeaker 61. The sound signal switch 611 and the detection circuit 621 for plugging the plug of the wired earphone 62 into the socket. An audio source 50 is electrically connected to an amplifier 51, and the amplifier 51 is electrically connected to the wireless transmission module 30, the audio signal switch 611, and the detection circuit 621 to provide audio output. The power supply 70 is electrically connected to the power switch 32 and provides power required by each component of the device. Wherein the power switch 32 and the sound signal switch 611 can be switches composed of transistors respectively.

The above-mentioned device can provide the user to use the control panel 41 to select the exclusive mode or the sharing mode to output sound:

1. When the user selects the exclusive mode, the microprocessor 40 can detect whether the plug of the wired earphone 62 is inserted into the socket through the detection circuit 621; , so that the wireless transmission module 30 cannot transmit the radio sound carrier signal; and control the sound signal switch 611 to disconnect the sound transmission signal to the sound signal transmission end of the speaker 61, so that the speaker 61 cannot output sound, and only the wired earphone 62 can output sound. When the microprocessor 40 detects that the plug of the wired earphone 62 is not inserted into the socket, it controls the power switch 32 to conduct power to the wireless transmission module 30, so that the wireless transmission module 30 obtains power supply and transmits radio sound through the antenna 31 The carrier signal is sent to the wireless earphone 33, and the microprocessor 40 detects whether the wireless earphone 33 is connected via the feedback interface (such as UART) of the wireless transmission module 30. The sound signal switch 611 disconnects the sound signal from being transmitted to the loudspeaker 61, and only the wireless earphone 33 can output sound; The speaker 61 makes the speaker 61 output sound, and only the speaker 61 outputs sound at this time.

2. When selecting the sharing mode, the user can control the microprocessor 40 via the control panel 41 to select the sharing mode of the wired earphone 62 , the speaker 61 , and the wireless earphone 33 , or any two of them. When the sharing mode of the three or the sharing mode of the wireless earphone 33 and the speaker 61 is selected, the microprocessor 40 controls the power switch 32 to maintain the state of conducting power to the wireless transmission module 30, and controls the sound signal switch 611 to maintain the output sound signal To the state of the speaker 61, the wired earphone 62, the speaker 61, and the wireless earphone 33 can output sound at the same time, or the wireless earphone 33 and the speaker 61 can output sound at the same time. When the wireless earphone 33 or the speaker 61 is selected to share with the wired earphone 62 respectively, the microprocessor 40 controls the power switch 32 to maintain the state of conducting power to the wireless transmission module 30, or controls the sound signal switch 611 to maintain the transmission of the sound signal to the speaker The state of 61 enables the wireless earphone 33 or the loudspeaker 61 and the wired earphone 62 to output sound simultaneously.

Please refer to Figure 2, Figure 4, and Figure 5. A specific embodiment of the device for implementing the method of the present invention is to make the microprocessor 40 in FIG. 4 , the power switch 32 and the detection circuit 621 for plugging the plug of the wired earphone 62 into the socket to form a control circuit. This control circuit is mainly to make the control terminal 13 shown in Figure 1 electrically connect a microprocessor 40, (can be the microprocessor of numbering 8051 or 8088), and make an output terminal 131 of microprocessor 40 replace original The control terminal 13 is electrically connected to the transistor 14 . In addition, the left and right audio output terminals 11 , 12 , the speaker 61 and the microprocessor 40 are respectively electrically connected to the sound signal switch 611 ; the microprocessor 40 is also electrically connected to the UART of the wireless transmission module 30 .

Using the control panel 41 of the microprocessor 40, the user can select "exclusive mode" or "shared mode". When in "exclusive mode", the microprocessor 40 makes the output terminal 131 and the CN end of the earphone jack 20 have the same high and low potential states, and its effect is as the aforementioned known operation mode. When the wired earphone is inserted into the earphone jack 20 At this time, the wireless transmission module 30 cannot obtain power supply to transmit audio signals; when the wired earphone is not inserted into the earphone jack 20, the wireless transmission module 30 can obtain power supply to transmit audio signals.

When in the "sharing mode", regardless of whether the CN terminal of the earphone socket 20 is at a high potential or a low potential, the microprocessor 40 keeps the output terminal 131 in a high state, so that the wireless transmission module 30 can obtain power supply, and through the antenna 31 Transmits wireless sound carrier signals. Therefore, the user can simultaneously receive the sound signal through the wireless earphone and the wired earphone, so as to achieve the function of sharing and listening to the sound.

Please refer to Figure 6. The method of the present invention comprises the steps of:

61 Make the microprocessor detect whether there is setting information for mode selection;

62. When there is the setting information of "exclusive mode", the microprocessor controls the power switch, and only outputs power to the wireless transmission module when the earphone socket is not inserted into the earphone plug, so that the wireless transmission module transmits the radio sound carrier signal, And control the sound signal input switch to disconnect the sound signal to the speaker, unless the wireless transmission module detects that the wireless earphones cannot communicate successfully through the feedback interface of the wireless transmission module, then control the sound signal switch to transmit the sound signal to Speaker, make the speaker output sound;

63 When there is information of "sharing mode", the microprocessor controls the power switch to output power to the wireless transmission module, so that the wireless transmission module transmits the sound signal, and/or controls the sound signal switch to transmit the sound signal to the speaker, Even if the feedback interface detects that the wireless earphone can communicate and connect information smoothly, the speaker will output sound.

The microprocessor of the present invention can also be the microprocessor of the sound output device itself, only need to make the microprocessor cooperate with the control circuit of the same function, can realize the function for the user to select "sharing mode" or "exclusive mode" . Use the earphone socket to detect the action of plug insertion, and automatically switch the wireless device to connect the device, eliminating the inconvenience of manual operation. The wireless earphones can be connected and the wired earphones can also be driven according to the needs, so that two people can share one player at the same time, or let the speakers play sound at the same time, so that the sound output devices with wireless earphones and wired earphones can be more diversified. The sound output function enhances the competitiveness of the product.

The above descriptions are only examples utilizing the technical content of the present invention. Any modifications and changes made by those skilled in the art using the present invention belong to the patent scope claimed by the present invention, and are not limited to the content disclosed in the examples.

Claims (10)

1. method of controlling voice output is with so that voice output has can select with user's control, makes in wired earphone, wireless headset and the loudspeaker at least the two function of output sound simultaneously, it is characterized in that, comprises the steps:

(1) pattern that provides a control panel to utilize this control panel to select a sound and export for the user, this pattern comprises one " sharing model "; Should " sharing model " be both output sounds simultaneously at least among control built-in loudspeaker, wired earphone and the wireless headset three;

(2) make the microprocessor detecting whether the set information of this model selection be arranged;

(3) when this microprocessor detects the set information of this " sharing model ", at least one can transmit voice signal to the transmission of sound signals end of this microprocessor control wireless transmission module and loudspeaker in the two, wherein the voice signal of this wireless transmission module transmission is the sound carrier signal by wireless radio transmission, so that the two can the while output sound at least in wired earphone, wireless headset and the loudspeaker.

2. the method for control voice output as claimed in claim 1 is characterized in that, wherein when this " sharing model ", when this microprocessor is selected this wireless transmission module of control, makes this wireless transmission module transmission voice signal.

3. the method for control voice output as claimed in claim 2 is characterized in that, wherein this microprocessor is to control a power switch conduct power to this wireless transmission module, makes this wireless transmission module transmission voice signal.

4. the method for control voice output as claimed in claim 1 is characterized in that, wherein when this " sharing model ", when this microprocessor was selected control one voice signal switch, the transmission voice signal made this loudspeaker output sound to these loudspeaker.

5. the method for control voice output as claimed in claim 1, it is characterized in that, wherein when this " sharing model ", this microprocessor is controlled this wireless transmission module, make this wireless transmission module transmission voice signal, and control one voice signal switch, the transmission voice signal is to these loudspeaker, when this microprocessor detects the online information of wireless headset via the feedback interface of this wireless transmission module, also make this loudspeaker output sound.

6. the method for control voice output as claimed in claim 5 is characterized in that, wherein this feedback interface is universal asynchronous reception transfer bus.

7. the method for control voice output as claimed in claim 1 is characterized in that, wherein the pattern of this voice output further comprises one " exclusively enjoying pattern "; Should " exclusively enjoying pattern " be among control built-in loudspeaker, wired earphone and the wireless headset three exportable sound only to be arranged; The information of this model selection further comprises the set information that this " exclusively enjoys pattern ", when this set information that " exclusively enjoys pattern ", the transmission of sound signals end that this microprocessor is controlled this wireless transmission module and these loudspeaker only has one in the two, when earphone socket does not insert headset plug, could transmit voice signal, so that energy output sounds are only arranged in wired earphone, wireless headset and the loudspeaker.

8. the method for control voice output as claimed in claim 7, it is characterized in that, wherein when this " exclusively enjoys pattern ", this microprocessor is controlled a power switch, detect earphone socket when not inserting headset plug at a circuit for detecting, just output power makes this wireless transmission module transmission voice signal to this wireless transmission module; When " sharing model ", this microprocessor is controlled this power switch, and output power is to this wireless transmission module, detects this earphone socket when inserting headset plug at this circuit for detecting, also makes this wireless transmission module transmission voice signal.

9. the method for control voice output as claimed in claim 8, it is characterized in that, wherein when this " exclusively enjoys pattern ", this microprocessor is control one voice signal switch further, disconnect the transfer voice signal to these loudspeaker, unless pass back when detecting the not online information of wireless headset via the feedback interface of this wireless transmission module at this microprocessor, Cai guide sound tone signal switch, the transmission voice signal should make this loudspeaker output sound to these loudspeaker; When this " sharing model ", this microprocessor is further controlled this voice signal switch, and the transmission voice signal is to these loudspeaker, when the feedback interface of this wireless transmission module detects the online information of wireless headset, also makes this loudspeaker output sound.

10. the method for control voice output as claimed in claim 9 is characterized in that, wherein this feedback interface is universal asynchronous reception transfer bus.

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