CN104023285A - Electronic device and control method - Google Patents
Electronic device and control method Download PDFInfo
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- CN104023285A CN104023285A CN201310063762.1A CN201310063762A CN104023285A CN 104023285 A CN104023285 A CN 104023285A CN 201310063762 A CN201310063762 A CN 201310063762A CN 104023285 A CN104023285 A CN 104023285A
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Abstract
The invention discloses an electronic device and a control method; the electronic device comprises a plug hole and a sound source output circuit; the plug hole is used for containing a plug; the sound source output circuit determines an operation mode of the electronic device according to a detection signal; if the detection signal is a first logic potential, then the plug is determined to be a plug with an external loudspeaker, and the electronic device enters a first mode; if the detection signal is a second logic potential, the plug is determined to be a plug of an earphone, and the electronic device enters a second mode; a maximum output voltage of the electronic device on a reference db in the first mode is a first voltage, a maximum output voltage of the electronic device on a reference db in the second mode is a second voltage, wherein the first voltage is bigger than the second voltage. The electronic device can detect a resistance value of the plug or a fixed operation mode of a user so as to adjust a maximum sound volume output of the electronic device.
Description
Technical field
The present invention relates to a kind of electronic installation, relate in particular to a kind of electronic installation with the function of automatic test plug type.
Background technology
Electronic installation now is often equipped with jack to play music, allows user can utilize earphone or circumscribed loud speaker to listen to the music.Conventionally understood protection user's ear, avoided because volume comes to harm too greatly, the max volume that electronic installation can be exported can limit to some extent.Yet when user connects external loudspeaker by electronic installation, it is better more loudly now to wish, but is limited to the max volume that electronic installation can be exported, and makes on the contrary the too little sound of sound, cannot enjoy music.
In view of this, need a kind of new scheme, to address the above problem.
Summary of the invention
The invention provides a kind of electronic installation, by the resistance value of test plug, or detection user's set operator scheme, adjust the max volume output of electronic installation.
The invention provides a kind of electronic installation, comprise that jack is in order to take in plug, and source of sound output circuit determines operator scheme according to detection signal.When detection signal is the first logic current potential, source of sound output circuit judgement plug is the plug of an external loudspeaker, and electronic installation enters first mode; When detection signal is the second logic current potential, source of sound output circuit judges that plug is the plug of an earphone, and electronic installation enters the second pattern, and wherein the first logic current potential is different from the second logic current potential; In this first mode, the maximum output voltage of electronic installation when a benchmark decibel is the first voltage, and in the second pattern, the maximum output voltage of electronic installation when benchmark decibel is second voltage, and wherein the first voltage is greater than second voltage.
The invention provides a kind of control method, comprise and judge whether plug is accommodated in the jack of electronic installation, and when plug is accommodated in jack, the current potential of judgement detection signal; When detection signal is the first logic current potential, judgement plug is the plug of an external loudspeaker, and makes electronic installation enter first mode; When detection signal is the second logic current potential, judgement plug is the plug of an earphone, and makes electronic installation enter the second pattern, and wherein the second logic current potential is different from the first logic current potential; In first mode, the maximum output voltage of electronic installation when benchmark decibel is the first voltage, and in the second pattern, the maximum output voltage of electronic installation when benchmark decibel is second voltage, and wherein the first voltage is greater than second voltage.
Therefore, electronic installation of the present invention can be by the resistance value of test plug, or detects user's set operator scheme, adjusts the max volume output of electronic installation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the electronic installation of test plug type;
Fig. 2 is the circuit diagram of embodiments of the invention;
Fig. 3 is the operational flowchart of electronic installation provided by the present invention;
Fig. 4 is another operational flowchart of electronic installation provided by the present invention.
Description of reference numerals in above-mentioned accompanying drawing is as follows:
100～electronic installation
102～jack
110～plug
114～ground signalling district
115～left audio signal district
116～right audio signal district
210～source of sound output circuit
220～testing circuit
232～the first resistance
234～the second resistance
236～dividing potential drop node
240～the first pins
250～the second pins
The 260～three pin
The 270～four pin
The 280～five pin
VDD～voltage source
Embodiment
Device and the using method of various embodiments of the invention will be discussed in detail below.Yet it should be noted that many feasible inventive concepts provided by the present invention may be implemented in various particular ranges.These specific embodiments are only for illustrating device of the present invention and using method, but non-for limiting scope of the present invention.
Fig. 1 is the schematic diagram of electronic installation that can test plug type.As shown in the figure, electronic installation 100 comprises jack 102, source of sound output circuit 210 and testing circuit 220.Jack 102 is in order to take in a plug 110, wherein this plug 110 comprises along three signal conducting regions of single pin length predetermined order configuration, from plug bottom, start to be sequentially access area 114, right audio signal district 115 and left audio signal district 116, wherein Zuo Ji right audio signal district 115,116 can exchange mutually.In other words, plug 110 can be the plug of general earphone or the plug of a loud speaker (speaker).In addition, plug 110 is not defined as and comprises three signal conducting regions.For instance, plug 110 also can be the plug that a wheat can wind earphone.Now, plug 110 will comprise four signal conducting regions, that is also comprise a microphone area except three signal conducting regions 114～116.
Source of sound output circuit 210 determines operator scheme according to a detection signal (not shown).Source of sound output circuit 210 at least comprises that a coding-decoding circuit (CODEC) forms.In one embodiment, source of sound output circuit 210 can be comprised of central processing unit (CPU) and coding-decoding circuit (CODEC).In another embodiment, source of sound output circuit 210 can be comprised of with coding-decoding circuit central processing unit, digital signal processor (DSP).In certain embodiments, coding-decoding circuit can have the function of judgement size of current.Detection signal is the first logic current potential or the signal of the second logic current potential, and is produced by testing circuit 220, or is produced by a diverter switch (not shown).Testing circuit 220 to detect its resistance value, accordingly produces first logic current potential or the detection signal of second logic current potential according to the size of this resistance value in order to attachment plug 110.In a certain embodiment, when detected resistance value is greater than a set value, testing circuit 220 produces the detection signal with the first logic current potential.On the contrary, when detected resistance value is less than set value, testing circuit 220 produces the detection signal with the second logic current potential.Moreover, diverter switch can be a hardware switch or a software program, when user operates this diverter switch, diverter switch will switch to the second logic current potential from the first logic current potential by detection signal, or switches to the first logic current potential from the second logic current potential.It should be noted that user operates diverter switch and comprises many kinds of modes of operation, for example user presses, slides or rotates at least one critical number of times of this diverter switch or a crash time.Operate diverter switch and also comprise when electronic installation 100 operates in maximum or minimal volume, user presses, slides or rotates at least one critical number of times of this diverter switch or a crash time, and detailed step will illustrate in subsequent figures.
If detection signal is the first logic current potential, to judge plug 110 be the plug of an external loudspeaker to source of sound output circuit 210, and electronic installation 100 enters first mode; If detection signal is the second logic current potential, source of sound output circuit 210 judgement plugs 110 are the plug of an earphone, and electronic installation 100 enters the second pattern.When first mode, source of sound output circuit 210 can be set as the max volume of electronic installation 100 (operation) and when benchmark decibel, export the first voltage; When the second pattern, source of sound output circuit 210 can be set as the max volume of electronic installation 100 (operation) and export second voltage when benchmark decibel, and wherein the first voltage is greater than second voltage.Generally speaking, basis point Becquerel is set as the sine wave (sine wave) of 0dB, the first voltage is the magnitude of voltage between 700 to 900 milli r.m.s. volts (mVrms), and second voltage is the magnitude of voltage between 200 to 400 milli r.m.s. volts (mVrms).Max volume output when in other words, the max volume output of electronic installation 100 can be greater than the second pattern when first mode.
In one embodiment, first source of sound output circuit 210 judges whether plug 110 is incorporated in jack 102, and then whether the diverter switch of detection. electronics 100 is in the first state.If diverter switch is in the first state, 210 generations of source of sound output circuit have the detection signal of the first logic current potential; If diverter switch is in the second state, 210 generations of source of sound output circuit have the detection signal of the second logic current potential.That is to say, user can for example press, slide or rotate this diverter switch by operation diverter switch, determines the mode of operation (meaning is to meet a set operation) of electronic installation 100.For example, if user wishes larger max volume output (while using external loudspeaker to listen to the music), operate diverter switch to produce the detection signal of the first logic current potential, electronic installation 100 enters first mode, and source of sound output circuit 210 can be set as the max volume of electronic installation 100 exporting the first voltage when benchmark decibel; For example, if user wishes less max volume output (while using earphone to listen to the music), operate diverter switch to produce the detection signal of the second logic current potential, electronic installation 100 enters the second pattern, and source of sound output circuit 210 can be set as the max volume of electronic installation 100 exporting second voltage when benchmark decibel.Therefore, user can, according to the hobby of oneself, adjust the max volume output of electronic installation 100.
In another embodiment, electronic installation 100 by predetermined registration operation in the second pattern.First, source of sound output circuit 210 judges whether plug 110 is incorporated in jack 102, then judges whether the output voltage of plug 110 is second voltage.If second voltage represents that electronic installation 100 has reached the output of max volume; If not second voltage, represent that electronic installation 100 not yet reaches the output of max volume.At the same time, source of sound output circuit 110 judges whether to receive volume that diverter switch the produces signal of increasing demand constantly.When the output voltage of plug 110 is that second voltage (representing to have reached max volume) and the received volume of source of sound output circuit 210 increase signal higher than a critical number of times or a crash time (representing to meet a set operation), produce the detection signal with the first logic current potential; That is to say, source of sound output circuit 210 is judged user and is wished that electronic installation 100 has larger max volume output, and produces the detection signal with the first logic current potential, makes electronic installation 100 enter first mode.On the contrary, when the output voltage of plug 110 is not second voltage (representing not reach max volume) or received volume increases signal lower than a critical number of times or a crash time, source of sound output circuit 210 produces the detection signal with the second logic current potential; That is to say, source of sound output circuit 210 is judged the volume that user wishes electronic installation 100, but does not need to change the setting of its max volume output, and produces the detection signal with the second logic current potential, makes electronic installation 100 maintain the second pattern.
In certain embodiments, electronic installation 100 also can comprise processing unit, memory cell, display and contact panel etc.It should be noted that, it is upper that electronic installation 100 may be implemented in other computer systems configurations (configuration), for example portable equipment (hand-held devices), multiprocessing system, take microprocessor as basis or the consumption electronic products of programmable (microprocessor-based or programmable consumer electronics).In preferred embodiment of the present invention, electronic installation 100 is handheld electronic device, for example panel computer or mobile phone.
Fig. 2 is the circuit diagram of an embodiment of electronic installation in the present invention.Testing circuit 220 is coupled to source of sound output circuit 210, and testing circuit 220 comprises the first resistance 232 and the second resistance 234.The first resistance 232 has first end and is coupled to voltage source V DD, and the second end is coupled to dividing potential drop node 236.The second resistance 234 has first end and is coupled to dividing potential drop node 236, and the second end is coupled to source of sound output circuit 210.Source of sound output circuit 210 is connected to left signal audio zone 115 and the right signal audio zone 116 of plug 110 by the 3rd pin 260 and the 4th pin 270, and by the ground signalling district 114 of the 5th pin 280 attachment plugs 110.
Whether source of sound output circuit 210, by the second pin 250 attachment plugs 110, takes in plug 110 in order to detect jack 102.When the second pin 250 is not connected to plug 110, the second pin 250 can be in open circuit (open) state, namely high potential.Voltage on the second pin 250 is when high potential changes electronegative potential into, and source of sound output circuit 210 is judged jack 102 and taken in plug 110; On the contrary, if the voltage on the second pin 250 changes high potential into from electronegative potential, source of sound output circuit 210 judgement plugs 110 are extracted in jack 102.
In the embodiment shown in Figure 2, source of sound output circuit 210 is connected to the 4th pin 270 by the first pin 240, with the resistance value of test plug 110.In general, the resistance value of the plug of earphone is less, be approximately 10 to 60 ohm, and the resistance value of the plug of loud speaker is larger, is approximately 550 to 650 ohm.In a certain embodiment, the resistance value of the plug of earphone is approximately 32 ohm, and the resistance value of the plug of loud speaker is approximately 600 ohm.Therefore, if the first pin 240 connects is the plug of earphone, because the resistance value of plug is lower, make the voltage on dividing potential drop node 236 less, the detection signal that now produced is electronegative potential; On the contrary, if the first pin 240 connects is the plug of external loudspeaker, because the resistance value of plug is higher, make the voltage on dividing potential drop node 236 larger, the detection signal that now produced is high potential.Generally speaking, testing circuit 220 can produce a detection signal, and source of sound output circuit 210 can be high potential or electronegative potential according to detection signal, enters respectively first mode or the second pattern.In first mode, source of sound output circuit 210 can be set as the max volume of electronic installation 100 exporting the first voltage when benchmark decibel.In the second pattern, source of sound output circuit 210 can be set as the max volume of electronic installation 100 can exporting second voltage when 0dB is sinusoidal wave, and wherein the first voltage is greater than second voltage.
It should be noted that if source of sound output circuit 210 can detect the size of electric current, testing circuit 220 can in be built among source of sound output circuit 210.Now source of sound output circuit 210 is connected to plug 110 by built-in testing circuit 220, and testing circuit 220 produces a detection signal according to the resistance value of plug 110, and source of sound output circuit 210 can be high potential or electronegative potential according to detection signal, make electronic installation 100 enter respectively first mode or the second pattern.Because testing circuit 220 is built among source of sound output circuit 210, the first resistance 232 and the second resistance 234 in Fig. 2 just can be removed, and make the circuit framework of electronic installation more simple, and can reduce costs.
In an embodiment of the present invention, source of sound output circuit 210 can be when first, second pattern, by different conversion tables or hardware conversion circuit on the same group not, digital tone source signal is converted to the analog output voltage of a correspondence.Carefully, in first mode, source of sound output circuit 210 is controlled according to volume, digital tone source signal is changed to the analog output voltage in a first voltage range, and in the second pattern, source of sound output circuit 210 is controlled according to volume, and digital tone source signal is changed to the analog output voltage within the scope of a second voltage.It is noted that, in first voltage range, represent that the maximum analog output voltage (for example the first voltage) of max volume output can be greater than the maximum analog output voltage (for example second voltage) that represents max volume output within the scope of second voltage.
Fig. 3 is the operational flowchart of electronic installation provided by the present invention.In step S300, source of sound output circuit 210 judges whether plug 110 is incorporated in jack 102, if enter step S302, gets back to if not step S300.In step S302, source of sound output circuit 210 judgement detection signals, in which kind of current potential, enter step S304 if be positioned at the first logic current potential, if the second logic current potential enters step S308.It should be noted that detection signal can be produced by a testing circuit or a diverter switch.
In step S304, source of sound output circuit 210 judgement plugs 110 are for the plug of external loudspeaker and enter first mode, then in step S306, source of sound output circuit 210 can be set as the max volume of electronic installation 100 exporting the first voltage when benchmark decibel.For example, source of sound output circuit 210 is set as the max volume of electronic installation 100 to export when 0dB is sinusoidal wave the voltage of 800 milli r.m.s. volts.In step S308, source of sound output circuit 210 judgement plugs 110 are for the plug of earphone and enter the second pattern, and then, in step S310, source of sound output circuit 210 can be set as the max volume of electronic installation 100 exporting second voltage when benchmark decibel.For example, source of sound output circuit 210 is set as the max volume of electronic installation 100 to export when 0dB is sinusoidal wave the voltage of 300 milli r.m.s. volts.
Fig. 4 is another operational flowchart of electronic installation provided by the present invention.In this embodiment, detection signal system is produced by diverter switch.In step S400, source of sound output circuit 210 judges whether plug 110 is incorporated in jack 102, if enter step S402, gets back to if not step S400.In step S402, source of sound output circuit 210 is set as the max volume of electronic installation 100 to export when 0dB is sinusoidal wave the voltage (first mode) of 300 milli r.m.s. volts.Then, enter step S404, source of sound output circuit 210 judges whether diverter switch is subject to a set operation, and wherein set operation comprises multiple mode of operation as above, repeats no more herein.If so, enter step S406, get back to if not step S402.
In step S406, source of sound output circuit 210 is set as the max volume of electronic installation 100 to export when 0dB is sinusoidal wave the voltage (the second pattern) of 800 milli r.m.s. volts.Then, enter step S408, source of sound output circuit 210 judges that whether plug 110 removes in jack 102, if get back to step S400, gets back to step S406 if not.
Therefore, electronic installation of the present invention can be by the resistance value of test plug, or detects user's set operator scheme, adjusts the max volume output of electronic installation 100.
Only as described above, it is only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence of generally doing according to the present patent application the scope of the claims and invention description content changes and modifies, and all still remains within the scope of the patent.In addition, arbitrary embodiment of the present invention or claim must not reached disclosed whole objects or advantage or feature.In addition, summary part and title are only for the use of auxiliary patent document search, are not used for limiting interest field of the present invention.
Claims (10)
1. an electronic installation, comprising:
One jack, in order to take in a plug; And
One source of sound output circuit, according to a detection signal, determine operator scheme, when this detection signal is the first logic current potential, this source of sound output circuit judges that this plug is the plug of an external loudspeaker, and this electronic installation enters a first mode, when this detection signal is the second logic current potential, this source of sound output circuit judges that this plug is the plug of an earphone, and this electronic installation enters one second pattern; Wherein this first logic current potential is different from this second logic current potential, in this first mode, the maximum output voltage of this electronic installation when a benchmark decibel is one first voltage, in this second pattern, the maximum output voltage of this electronic installation when a benchmark decibel is a second voltage, and wherein this first voltage is greater than this second voltage.
2. electronic installation as claimed in claim 1, wherein this first voltage is the magnitude of voltage between 700 to 900 milli r.m.s. volts, this second voltage is the magnitude of voltage between 200 to 400 milli r.m.s. volts.
3. electronic installation as claimed in claim 1, also comprises a diverter switch, in order to this detection signal is switched to the second logic current potential from the first logic current potential, or switches to the first logic current potential from the second logic current potential.
4. electronic installation as claimed in claim 1, also comprise a diverter switch, in order to produce the volume signal of increasing demand, wherein after the output voltage that is sent to this plug is this second voltage, this volume producing when this diverter switch is increased demand the number of times of signal or time during higher than a set value, and this source of sound output circuit switches to this first logic current potential by this detection signal from this second logic current potential.
5. electronic installation as claimed in claim 1, wherein this electronic installation comprises a testing circuit, in order to detect a resistance value of this plug; Wherein, when this resistance value is set value when above, testing circuit produces this detection signal with this first logic current potential, and when this resistance value is during lower than this set value, testing circuit produces this this detection signal of the second logic current potential.
6. electronic installation as claimed in claim 5, is wherein built in this testing circuit among this source of sound output circuit.
7. a control method, comprising:
Judge whether a plug is accommodated in a jack of an electronic installation;
When this plug is accommodated in this jack, the current potential of judgement one detection signal;
When this detection signal is the first logic current potential, judges that this plug is the plug of an external loudspeaker, and make this electronic installation enter a first mode;
When this detection signal is one second logic current potential, judge that this plug is the plug of an earphone, and make this electronic installation enter one second pattern, wherein this second logic current potential is different from this first logic current potential; And
In this first mode, the maximum output voltage of this electronic installation when a benchmark decibel is one first voltage, and in this second pattern, the maximum output voltage of this electronic installation when this benchmark decibel is a second voltage, and wherein this first voltage is greater than this second voltage.
8. control method as claimed in claim 7, also comprises:
Judgement is accommodated in the equivalent resistance of this plug in this jack;
When this equivalent resistance is during lower than a set value, produce this detection signal with this second logic current potential; And
When this equivalent resistance is during higher than this set value, produce this detection signal with this first logic current potential.
9. control method as claimed in claim 7, also comprises:
Whether detect a diverter switch of this electronic installation in one first state;
When this diverter switch is during in this first state, produce this detection signal with this first logic current potential; And
When this diverter switch is when being different from second state of this first state, produce this detection signal with this second logic current potential.
10. control method as claimed in claim 7, also comprises:
Whether the output voltage that judgement is sent to this plug is this second voltage;
Judge whether to receive the volume signal of increasing demand;
At the output voltage that is sent to this plug, for after this second voltage, this received volume is increased demand the number of times of signal or time during higher than a set value, produces this detection signal with this first logic current potential; And
At the output voltage that is sent to this plug, for before this second voltage, or this received volume increases demand the number of times of signal or time during lower than this set value, produces this detection signal with this second logic current potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310063762.1A CN104023285A (en) | 2013-02-28 | 2013-02-28 | Electronic device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310063762.1A CN104023285A (en) | 2013-02-28 | 2013-02-28 | Electronic device and control method |
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| CN104023285A true CN104023285A (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310063762.1A Pending CN104023285A (en) | 2013-02-28 | 2013-02-28 | Electronic device and control method |
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| CN107948874A (en) * | 2017-11-28 | 2018-04-20 | 维沃移动通信有限公司 | A kind of terminal control method, mobile terminal |
| CN109166271A (en) * | 2018-10-30 | 2019-01-08 | 广汽丰田汽车有限公司 | Automobile production workshop alarm method, device and readable storage medium storing program for executing |
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| CN201898602U (en) * | 2010-12-27 | 2011-07-13 | 浙江安迪信信息技术有限公司 | Passive sound box interface of mobile phone |
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| CN1937403A (en) * | 2005-09-23 | 2007-03-28 | 英华达(上海)电子有限公司 | Intelligent volume switching method for multimedia |
| US20070098184A1 (en) * | 2005-10-26 | 2007-05-03 | Nec Infronita Corporation | Audio input/output device and method for switching input/output functions |
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