CN201594904U - Terminal - Google Patents
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- Publication number
- CN201594904U CN201594904U CN 200920247028 CN200920247028U CN201594904U CN 201594904 U CN201594904 U CN 201594904U CN 200920247028 CN200920247028 CN 200920247028 CN 200920247028 U CN200920247028 U CN 200920247028U CN 201594904 U CN201594904 U CN 201594904U
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- Prior art keywords
- power amplifier
- terminal
- amplifier module
- audio
- audio signal
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Abstract
The utility model discloses a terminal which comprises an earphone interface, a control module, a power amplifier module and a loudspeaker. The earphone interface is connected with the power amplifier module of the terminal through an earphone closed circuit and is used for receiving audio signals from an audio input device through a conversion line connected with the earphone interface, wherein the earphone closed circuit is arranged between the power amplifier module and the earphone interface; the control module is used for making a response to the operation of a user, shuts off an internal sound source of the terminal and turns on the power amplifier module so that the audio signal transmitted by the conversion line is transmitted to the power amplifier module through the earphone closed circuit and is amplified by the power amplifier module; or the power amplifier module and the internal sound source are turned on so that the power amplifier module amplifies the audio signal from the internal sound source; the power amplifier module is used for amplifying the audio signal under the control of the control module; and the loudspeaker is used for converting the amplified audio signal output by the power amplifier module into an acoustic signal. The terminal can be used as a playback device by utilizing the audio playback function of the terminal, thereby enriching the function of the terminal and improving user experience.
Description
Technical field
The utility model relates to the communications field, relates in particular to a kind of portable terminal.
Background technology
At the portable terminal that uses at present (for example, mobile phone), all be built-in with baseband module, audio frequency power amplifier and loud speaker, the audio files that baseband module can be resolved on the terminal obtains audio signal, audio frequency power amplifier can amplify audio signal, and loud speaker can be play the signal after amplifying.Be not provided with in terminal under the situation of audio amplifier, the user also can be with earphone as the source of sound output equipment, by the audio signal of earphone playback terminal.
Yet having outside audio signal source the user does not still but have under the situation of audio amplifier, and the audio signal of audio signal source can not play back.For example, the user has been equipped with computer, but is not equipped with audio amplifier, even user's this moment have can playing audio signal mobile phone, but this mobile phone is merely able to play the audio file of storing on the mobile phone, therefore still can't play the audio frequency in the computer, has reduced user experience.
Can't reduce the problem of user experience as putting loudspeaker outward at terminal in the correlation technique, not propose effective solution at present as yet.
The utility model content
Can't reduce the problem of user experience as putting loudspeaker outward at terminal in the correlation technique, the utility model proposes a kind of terminal, can make terminal have the function of outer playback case, improve user experience.
The technical solution of the utility model is achieved in that
A kind of terminal comprises:
Earphone interface is connected with the power amplifier module of terminal by the earphone path, is used for via the audio signal of the conversion line reception that is connected with earphone interface from audio input device, and wherein, the earphone path is between power amplifier module and earphone interface;
Control module is used for the operation in response to the user, the inside source of sound of closing a terminal, opens power amplifier module, makes audio signal via the transmission of conversion line reach power amplifier module by the earphone path and is amplified by power amplifier module; Perhaps open power amplifier module and inner source of sound, make power amplifier module amplify from the internal audio source audio signal;
Power amplifier module is used for carrying out the amplification of audio signal under the control of control module;
Loud speaker is used for and will changes acoustical signal into by the audio signal after the amplification of power amplifier module output.
This terminal may further include:
Reminding module is used for pointing out the user to operate control module after earphone interface inserts the conversion line.
And above-mentioned conversion line is used for the earphone interface of described audio input device is connected with the earphone interface of described terminal.
By technique scheme of the present utility model, by will input to terminal from the audio signal of outer audio equipment, close a terminal itself the inside source of sound and the audio frequency power amplifier that opens a terminal, make the audio frequency power amplifier of terminal can amplify audio signal from outer audio equipment, and then pass through loudspeaker plays, thereby the voice playing function of utilizing terminal has reached the purpose of terminal as playback equipment, thereby enriched the function and application of terminal, improved user experience.
Description of drawings
Fig. 1 is the composition system block diagram according to the terminal of the utility model embodiment;
Fig. 2 is the schematic diagram that the earphone interface according to the terminal of the utility model embodiment is connected with the earphone interface of outer audio equipment;
Fig. 3 is the block diagram according to another structure example of the terminal of the utility model embodiment.
Embodiment
The power amplifier and the loudspeaker that carry on the terminal of the utility model utilization such as mobile phone etc. as a small-sized audio amplifier, realize playing the function from the audio signal of outside other equipment with terminal.
In order to achieve the above object, at first need terminal is connected with other equipment that audio signal can be provided, thereby receive audio signal from outside other equipment.
When connecting, the earphone interface according to terminal of the present utility model can be connected with the audio output interface of outer audio equipment.In order to realize this connection, just need the conversion line of design specialized, an end of this conversion line is the headset plug corresponding with the audio output port of outer audio equipment, the other end is the headset plug of earphone interface on the counterpart terminal.
Like this, just can be connected to the audio output interface of outer audio equipment, thereby receive audio signal by outer audio equipment output by the conversion line according to the earphone interface of terminal of the present utility model.
Terminal itself has baseband module usually, this baseband module can be a comparatively complicated processor, can realize multiple processing and function, in the terminal of generally using at present, baseband module can carry out audio decoder usually and obtain decoded audio signal (being to have audio-source in the baseband module of terminal), therefore, when needing terminal plays from the audio signal of outer audio equipment, just need terminal that the inside source of sound of the baseband module of itself is closed or masked, the audio frequency power amplifier (also can be called power amplifier module) of itself is directly amplified the audio signal from outer audio equipment, avoid audio frequency power amplifier to receive two kinds of different audio signals, the concrete formation that will describe terminal of the present utility model below in detail with and the inter-process mode.
Fig. 1 is the system block diagram according to the terminal of present embodiment.
As shown in Figure 1, be provided with earphone interface in the terminal according to present embodiment, the earphone interface of terminal itself is connected with the power amplifier module of terminal, and can receive by the audio input device transmission and via the audio signal of changing the line transmission.
Wherein, this audio signal is sent to power amplifier module by the earphone path (for example, MP3_L shown in Fig. 1 and MP3_R are the original earpiece audio path of terminal) of earphone interface.Simultaneously, the inner source of sound of terminal baseband module also can be in channel status by this earphone path MP3_L and MP3_R and earphone interface.
Fig. 2 schematically shows the design of conversion line.Wherein, the headset plug of conversion line counterpart terminal can be designed as the headset plug of the earphone interface of counterpart terminal, and whether the plug that can utilize the original headset detection of terminal to detect the conversion line is inserted in the earphone interface of terminal.
This terminal also should comprise the control module (not shown), is used for the operation in response to the user, closes inner source of sound, opens power amplifier module, and feasible audio signal via the transmission of conversion line reaches power amplifier module by the earphone path and amplified by power amplifier module; Perhaps open power amplifier module and inner source of sound, make power amplifier module amplify from the internal audio source audio signal.
Behind the audio signal arrival audio frequency power amplifier from audio input device or terminal inner source of sound, audio frequency power amplifier just can amplify this audio signal, after audio-frequency module amplified, the loud speaker of terminal just can be converted to acoustical signal with amplifying signal, reached the purpose of broadcast.Alternatively, loud speaker can be the outer loudspeaker of putting of terminal.
In addition, as shown in Figure 3, above-mentioned control module also can be come the sound source signal of switch audio power amplifier by two-way analog switch, and EN is the control pin of two-way analog switch.In connected mode shown in Figure 3, by the control two-way analog switch, the inside sound source signal BB_MP3 (comprising BB_MP3_R and BB_MP3_L) of terminal can be connected (BB_MP3_R is linked to each other with MP3_R ' and link to each other with MP3_L ' BB_MP3_L) with audio frequency power amplifier, make the audio signal of terminal plays internal audio source; Behind the switching analoging switch, the earphone path that just audio signal of external sound source can be passed through earphone interface is connected with audio frequency power amplifier, the while internal audio frequency signal of disconnected end and being connected of audio frequency power amplifier, like this, directly utilize earphone path in terminal, to just can play the audio signal of external audio input equipment by the audio frequency of conversion line reception from external sound source equipment with terminal as outer playback case.
For example, by two-way analog switch, the source of sound input of audio frequency power amplifier can be switched to the input of external sound source interface, and open audio frequency power amplifier Enable Pin PA_CTRL.This moment, the audio signal of external sound source can be come out by loudspeaker plays directly by the audio frequency power amplifier of earphone path incoming terminal.
Two-way analog switch shown in Fig. 3 only is a concrete example, in actual applications, can adopt such as the analog switch in the various conversion equipment alternate figures 3 of analog switch, and these substitute modes are all in protection scope of the present invention.
And above-mentioned various switches can be operated for the user with modes such as buttons on the structure of terminal.
In addition, above-mentioned switch can also be the switching device of realizing by programming, and concrete programming mode has a lot, and this paper does not enumerate one by one.
In addition, can also comprise reminding module in this terminal, be used under the situation that detects audio interface insertion headset plug, pointing out user operable switch (or handover module of process programming), promptly point out the user whether with the outer loudspeaker of putting of terminal as the external audio input equipment.
In sum, by technique scheme of the present utility model, by will input to terminal from the audio signal of outer audio equipment, close a terminal itself the inside source of sound and the audio frequency power amplifier that opens a terminal, make the audio frequency power amplifier of terminal can amplify audio signal from outer audio equipment, and then pass through loudspeaker plays, thereby the voice playing function of utilizing terminal has reached the purpose of terminal as playback equipment, thereby has enriched the function and application of terminal, has improved user experience.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (3)
1. a terminal is characterized in that, comprising:
Earphone interface, be connected with the power amplifier module of described terminal by the earphone path, be used for via the audio signal of the conversion line reception that is connected with described earphone interface from audio input device, wherein, described earphone path is between described power amplifier module and the described earphone interface and between the inside of described terminal source of sound and described power amplifier module;
Control module is used for the operation in response to the user, closes described inner source of sound, opens described power amplifier module, and feasible audio signal via described conversion line transmission reaches described power amplifier module by described earphone path and amplified by described power amplifier module; Perhaps open described power amplifier module and described inner source of sound, make described power amplifier module amplify from described internal audio source audio signal;
Described power amplifier module is used for carrying out the amplification of audio signal under the control of described control module;
Loud speaker is used for and will changes acoustical signal into by the audio signal after the amplification of described power amplifier module output.
2. terminal according to claim 1 is characterized in that, further comprises:
Reminding module is used for pointing out after described earphone interface inserts described conversion line described user to operate described control module.
3. terminal according to claim 1 and 2 is characterized in that, described conversion line is used for the earphone interface of described audio input device is connected with the earphone interface of described terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920247028 CN201594904U (en) | 2009-11-13 | 2009-11-13 | Terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920247028 CN201594904U (en) | 2009-11-13 | 2009-11-13 | Terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201594904U true CN201594904U (en) | 2010-09-29 |
Family
ID=42776970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920247028 Expired - Fee Related CN201594904U (en) | 2009-11-13 | 2009-11-13 | Terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201594904U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355518A (en) * | 2011-09-28 | 2012-02-15 | 惠州Tcl移动通信有限公司 | Mobile phone and audio processing method thereof |
| CN104683917A (en) * | 2015-01-27 | 2015-06-03 | 上海闻泰电子科技有限公司 | Audio control method for mobilephone |
| CN111147981A (en) * | 2020-01-20 | 2020-05-12 | 山东建筑大学 | Experimental audio amplification circuit using earphone as microphone |
-
2009
- 2009-11-13 CN CN 200920247028 patent/CN201594904U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355518A (en) * | 2011-09-28 | 2012-02-15 | 惠州Tcl移动通信有限公司 | Mobile phone and audio processing method thereof |
| CN104683917A (en) * | 2015-01-27 | 2015-06-03 | 上海闻泰电子科技有限公司 | Audio control method for mobilephone |
| CN111147981A (en) * | 2020-01-20 | 2020-05-12 | 山东建筑大学 | Experimental audio amplification circuit using earphone as microphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20151113 |
|
| EXPY | Termination of patent right or utility model |