TWI475478B - Mobile electronic device and method for controlling volume thereof - Google Patents
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Description
本發明是有關於一種音訊處理技術,且特別是有關於一種行動電子裝置及其音量控制方法。The present invention relates to an audio processing technology, and more particularly to a mobile electronic device and a volume control method thereof.
現今消費型行動電子裝置幾乎都具備音訊播放的功能,例如MP3播放器、筆記型電腦、智慧型手機...等。使用者可將行動電子裝置連接到輕便型耳機(例如,立體聲耳機、耳機麥克風)或是擴音喇叭後,便可隨時隨地欣賞音樂。然而,使用者經常會不自覺地透過耳機長時間聆聽超過人耳所能承受之音量的音樂而不自知。由於耳機更為靠近耳膜,對於使用者自身的聽覺將可能造成無可彌補的傷害。有些使用者甚至增加音樂的音量來抵消外界噪音,更是加重受到聽力傷害的機率。Todayadays, consumer mobile electronic devices almost all have audio playback functions, such as MP3 players, notebook computers, smart phones, and the like. Users can connect their mobile electronic devices to a portable headset (such as a stereo headset, a headset microphone) or a loudspeaker, so they can listen to music anytime, anywhere. However, users often unconsciously listen to music that exceeds the volume of the human ear through the earphones for a long time without knowing it. Since the earphone is closer to the eardrum, the user's own hearing may cause irreparable damage. Some users even increase the volume of the music to offset the outside noise, which increases the chance of hearing damage.
藉此,許多國家便限制行動電子裝置在透過耳機發聲時的最大輸出音量,避免消費者受到可能的聽力傷害,例如歐盟各國所採用的歐洲視頻設備安全標準EN 503332。廠商因而調降行動電子裝置整體的最大輸出音量,藉以因應上述規範的審查。然而,若使用者希望使用外接式擴音喇叭以從行動電子裝置獲得愈大愈好的音量時,行動電子裝置便會因為受到上述的音量限制而無法達到使用者的要求,消費者將會詬病此缺點而造成不良的使用者體驗。In this way, many countries limit the maximum output volume of mobile electronic devices when they are audible through headphones, so as to avoid possible hearing injuries, such as the European video equipment safety standard EN 503332 adopted by EU countries. The manufacturer thus downgrades the maximum output volume of the mobile electronic device as a whole, in order to comply with the above specifications. However, if the user wishes to use an external loudspeaker to obtain a louder volume from the mobile electronic device, the mobile electronic device will not be able to meet the user's request due to the above volume limitation, and the consumer will be ill. This shortcoming creates a poor user experience.
本發明提供一種行動電子裝置的音量控制方法,其可在揚聲裝置***行動電子裝置時避免產生突發的過大音量而傷害人耳,且判斷已***的揚聲裝置是否為麥克風型耳機以限制行動電子裝置的最大音量輸出而符合耳機限制規範,並可滿足使用者對於外接式擴音喇叭的大音量輸出。The invention provides a volume control method for a mobile electronic device, which can avoid a sudden excessive volume and damage the human ear when the speaker device is inserted into the mobile electronic device, and determine whether the inserted speaker device is a microphone type earphone to limit The maximum volume output of the mobile electronic device complies with the earphone limitation specification and can satisfy the user's large volume output for the external loudspeaker.
本發明提出一種行動電子裝置,其包括耳機接孔、處理單元以及插頭偵測電路。處理單元用以偵測所述行動電子裝置的耳機接孔是否***揚聲裝置的傳導插頭。當偵測傳導插頭已***所述耳機接孔時,處理單元將所述行動電子裝置的輸出音量值調整為保護音量值。插頭偵測電路耦接至所述耳機接孔以及所述處理單元。插頭偵測電路用以判斷所述傳導插頭為麥克風型插頭還是非麥克風型插頭,以提供偵測信號至所述處理單元。其中,當所述傳導插頭為麥克風型插頭時,處理單元將所述行動電子裝置的最大輸出音量增益調整為規範音量增益;當所述傳導插頭為非麥克風型插頭時,處理單元將所述行動電子裝置的最大輸出音量增益調整為非規範音量增益,其中所述非規範音量增益大於所述規範音量增益。The invention provides a mobile electronic device comprising an earphone jack, a processing unit and a plug detecting circuit. The processing unit is configured to detect whether the earphone jack of the mobile electronic device is inserted into the conductive plug of the speaker device. When detecting that the conductive plug has been inserted into the earphone jack, the processing unit adjusts the output volume value of the mobile electronic device to a protection volume value. A plug detecting circuit is coupled to the earphone jack and the processing unit. The plug detecting circuit is configured to determine whether the conductive plug is a microphone type plug or a non-microphone type plug to provide a detection signal to the processing unit. Wherein, when the conductive plug is a microphone type plug, the processing unit adjusts a maximum output volume gain of the mobile electronic device to a standard volume gain; when the conductive plug is a non-microphone type plug, the processing unit performs the action The maximum output volume gain of the electronic device is adjusted to a non-canonical volume gain, wherein the non-canonical volume gain is greater than the canonical volume gain.
於本發明之一實施例中,上述之非麥克風型插頭包括接地區、左聲道連接區以及右聲道連接區,且所述非麥克風型插頭中的接地區是所述麥克風型插頭中的接地區及麥克風連接區之集合。In an embodiment of the present invention, the non-microphone type plug includes a connection area, a left channel connection area, and a right channel connection area, and the connection area in the non-microphone type plug is in the microphone type plug. A collection of areas and microphone connection areas.
另一端點而言,本發明提出一種行動電子裝置的音量控制方法,其包括下列步驟:偵測所述行動電子裝置的耳 機接孔是否***揚聲裝置的傳導插頭。當所述傳導插頭已***所述耳機接孔時,則將所述行動電子裝置的輸出音量值調整為保護音量值。判斷所述傳導插頭為麥克風型插頭還是非麥克風型插頭。當所述傳導插頭為麥克風型插頭時,將所述行動電子裝置的最大輸出音量增益調整為規範音量增益。以及,當所述傳導插頭為非麥克風型插頭時,將所述行動電子裝置的最大輸出音量增益調整為非規範音量增益,其中所述非規範音量增益大於所述規範音量增益。In another aspect, the present invention provides a volume control method for a mobile electronic device, including the steps of: detecting an ear of the mobile electronic device Whether the machine socket is inserted into the conductive plug of the speaker device. When the conductive plug has been inserted into the earphone jack, the output volume value of the mobile electronic device is adjusted to protect the volume value. It is judged whether the conductive plug is a microphone type plug or a non-microphone type plug. When the conductive plug is a microphone type plug, the maximum output volume gain of the mobile electronic device is adjusted to a standard volume gain. And, when the conductive plug is a non-microphone type plug, adjusting a maximum output volume gain of the mobile electronic device to a non-canonical volume gain, wherein the non-canonical volume gain is greater than the canonical volume gain.
基於上述,本發明實施例的行動電子裝置可以偵測揚聲裝置的傳導插頭是否***,並且判斷此傳導插頭的種類。當使用者將揚聲裝置***行動電子裝置時,行動電子裝置便立即地將其輸出音量值自動調整至保護音量值,從而避免突發的過大音量傷害人耳。插頭感測電路藉由感測此傳導插頭是具備四個信號傳導區(麥克風型插頭)還是三個信號傳導區(非麥克風型插頭),藉以判斷揚聲裝置的種類,並利用判斷結果調整最大音量的電壓振幅,從而限制具備麥克風之耳機的最大音量值而符合耳機限制規範;並可增加外接式擴音喇叭的最大音量,從而滿足使用者對於外接式擴音喇叭的大音量輸出。Based on the above, the mobile electronic device of the embodiment of the present invention can detect whether the conductive plug of the speaker device is inserted, and determine the type of the conductive plug. When the user inserts the speaker device into the mobile electronic device, the mobile electronic device automatically adjusts its output volume value to the protection volume value, thereby preventing the sudden excessive volume from harming the human ear. The plug sensing circuit detects whether the conductive plug has four signal conducting regions (microphone type plugs) or three signal conducting regions (non-microphone type plugs), thereby judging the type of the speaker device and adjusting the maximum using the judgment result. The voltage amplitude of the volume, thereby limiting the maximum volume value of the earphone with the microphone and complying with the earphone limit specification; and increasing the maximum volume of the external loudspeaker, thereby satisfying the user's large volume output of the external loudspeaker.
為讓本發明之上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。The above described features and advantages of the present invention will be more apparent from the following description.
現將詳細參考本發明之示範性實施例,在附圖中說明所述示範性實施例之實例。另外,凡可能之處,在圖式及 實施方式中使用相同標號的元件/構件/符號代表相同或類似部分。DETAILED DESCRIPTION OF THE INVENTION Reference will now be made in detail to the exemplary embodiments embodiments In addition, wherever possible, in the schema and Elements/components/symbols that use the same reference numerals in the embodiments represent the same or similar parts.
圖1是根據本發明一實施例說明行動電子裝置100的功能方塊圖。如圖1所示,行動電子裝置100可以是筆記型電腦、平板電腦、智慧型手機、MP3播放器...等。行動電子裝置100包括耳機插孔130、處理單元110以及連接至耳機插孔130的插頭偵測電路120。於本實施例中,行動電子裝置100更包括用以處理音訊信號的發送與接收的音訊處理器140。音訊處理器140可以是音訊數位信號處理器(Audio DSP)、音訊編解碼器(Codec)或上述兩者的集合。1 is a functional block diagram illustrating a mobile electronic device 100 in accordance with an embodiment of the present invention. As shown in FIG. 1, the mobile electronic device 100 can be a notebook computer, a tablet computer, a smart phone, an MP3 player, and the like. The mobile electronic device 100 includes a headphone jack 130, a processing unit 110, and a plug detecting circuit 120 connected to the headphone jack 130. In this embodiment, the mobile electronic device 100 further includes an audio processor 140 for processing transmission and reception of audio signals. The audio processor 140 can be an audio digital signal processor (Audio DSP), an audio codec (Codec), or a collection of both.
處理單元110可以是筆記型電腦或平板電腦中的中央處理器和/或平台信號集線器,也可以是特別用於控制音訊處理器140的嵌入式晶片。處理單元110可以透過連接到耳機接孔130的耳機偵測接腳,藉由判斷耳機偵測(headset detect)信號HDS的產生與否,從而判斷外部揚聲裝置的傳導插頭是否已***耳機接孔130。Processing unit 110 may be a central processing unit and/or platform signal hub in a notebook or tablet, or may be an embedded chip specifically for controlling audio processor 140. The processing unit 110 can determine whether the conductive plug of the external speaker device is inserted into the earphone jack through the earphone detecting pin connected to the earphone jack 130 by determining whether the headshot detect signal HDS is generated or not. 130.
當處理單元110偵測到傳導插頭已***耳機接孔130時,處理單元110會直接將行動電子裝置100的輸出音量值先行調整為保護音量值。詳細來說,假設行動電子裝置100在其音量範圍中可以區分為多個音量區間,例如將靜音設定為第0個音量區間,將行動電子裝置100所設定之最大輸出音量增益對應的輸出音量值設定為第12個音量區間,藉以等比例區隔出12個音量區間。When the processing unit 110 detects that the conductive plug has been inserted into the earphone jack 130, the processing unit 110 directly adjusts the output volume value of the mobile electronic device 100 to the protection volume value. In detail, it is assumed that the mobile electronic device 100 can be divided into a plurality of volume ranges in its volume range, for example, setting the mute to the 0th volume interval, and outputting the volume corresponding to the maximum output volume gain set by the mobile electronic device 100. Set to the 12th volume range, and divide the 12 volume intervals in equal proportions.
一般而言,當揚聲裝置的傳導插頭***耳機接孔時,行動電子裝置便會依照當時的輸出音量值而透過揚聲裝置發出相應音量的聲音。然而,使用者通常沒有使用耳機時,由於需要增加音樂的音量來抵消外界噪音,因此當時的輸出音量值將會較高,例如設定為最大的第12個音量區間。若此時使用者將行動電子裝置***耳機以轉換擴音方式時,使用者很有可能會由於突發的過大音量使人耳受到傷害。In general, when the conductive plug of the speaker device is inserted into the earphone jack, the mobile electronic device emits a corresponding volume sound through the speaker device according to the output volume value at that time. However, when the user usually does not use the earphone, since the volume of the music needs to be increased to offset the external noise, the output volume value at that time will be higher, for example, the maximum 12th volume interval. If the user inserts the mobile electronic device into the earphone to convert the sound amplification mode, the user is likely to cause damage to the human ear due to the sudden excessive volume.
因此,本案實施例的處理單元110便在傳導插頭已***耳機接孔130時,自動地將其輸出音量值先行調整為可以保護人耳的保護音量值,藉以避免上述情形發生。保護音量值可以是在音量範圍所區分之12個音量區間中位於中間的第6個音量區間,藉以作為預設的音量區間。預設的音量區間也可以是使用者在行動電子裝置100的預設資料中先行設定好的音量區間。藉此,雖然使用者在將傳導插頭已***耳機接孔130時可能會發覺聲音音量降低從而保護人耳,使用者也可以於此時自行將音量再次調整到所需的音量即可。Therefore, the processing unit 110 of the embodiment of the present invention automatically adjusts the output volume value to protect the human ear's protection volume value when the conductive plug has been inserted into the earphone jack 130 to avoid the above situation. The protection volume value may be a sixth volume section located in the middle among the 12 volume sections differentiated by the volume range, thereby being used as a preset volume section. The preset volume interval may also be a volume interval set by the user in the preset data of the mobile electronic device 100. Thereby, although the user may find that the sound volume is lowered to protect the human ear when the conductive plug has been inserted into the earphone jack 130, the user can adjust the volume to the desired volume again at this time.
請參考圖1,在處理單元110已***傳導插頭而調整輸出音量值為保護音量值的同時或相關的期間中,耦接至耳機接孔130以及處理單元110的插頭偵測電路120判斷傳導插頭是麥克風型插頭還是非麥克風型插頭,以提供偵測信號DS至處理單元110,並於下述揭示中詳細說明插頭偵測電路120。Referring to FIG. 1 , the plug detecting circuit 120 coupled to the earphone jack 130 and the processing unit 110 determines the conductive plug while the processing unit 110 has inserted the conductive plug to adjust the output volume value to protect the volume value. Whether it is a microphone type plug or a non-microphone type plug to provide a detection signal DS to the processing unit 110, and the plug detecting circuit 120 is explained in detail in the following disclosure.
由於歐洲視頻設備安全標準EN 503332對於各種使用耳機之消費型電子裝置的測試條件是,當消費型電子裝置利用具備麥克風的耳機作為揚聲裝置,且播放具備-6dB之粉紅雜訊(pink noise)的音樂樣本(pattern)時,消費型電子裝置對於音訊信號的輸出端電壓必須要小於一設定值,例如,輸出端電壓的方均根值小於150毫伏(mVrms)。具備麥克風的耳機以及外接式擴音喇叭所使用的傳導插頭也有所差異。Due to the European video equipment security standard EN 503332, the test conditions for various consumer electronic devices using headphones are: when the consumer electronic device uses a microphone with a microphone as a speaker device, and the playback has -6dB pink noise. In the case of a music pattern, the output voltage of the audio signal of the consumer electronic device must be less than a set value, for example, the rms value of the output voltage is less than 150 millivolts (mVrms). There are also differences in the conductive plugs used for headphones with microphones and external loudspeakers.
圖2是配備麥克風型插頭之揚聲裝置210、220及行動電子裝置100的示意圖,圖3則是配備非麥克風型插頭之揚聲裝置230、240及行動電子裝置100的示意圖。如圖2所示,本實施例中具備麥克風型插頭之揚聲裝置210、220皆以具有麥克風的耳機作為舉例。具備麥克風的耳機所配備的傳導插頭212、214應具備四種互不導通的信號傳導區以分別傳送左右聲道音訊信號、麥克風信號以及接地。這四種信號傳導區分別是麥克風連接區MIC、接地區GND、左聲道連接區L以及右聲道連接區R。由於不同廠商對於這些信號傳導區的排列方式稍有不同,因此於圖2中揭示廣為使用的兩種傳導插頭212、222排列方式。2 is a schematic diagram of the speaker devices 210, 220 and the mobile electronic device 100 equipped with a microphone type plug, and FIG. 3 is a schematic diagram of the speaker devices 230, 240 and the mobile electronic device 100 equipped with a non-microphone type plug. As shown in FIG. 2, the speaker devices 210 and 220 having the microphone type plug in this embodiment are all exemplified by an earphone having a microphone. The conductive plugs 212, 214 provided with the microphone-equipped earphones should have four non-conducting signal conducting areas for respectively transmitting the left and right channel audio signals, the microphone signals, and the ground. The four signal conducting areas are a microphone connection area MIC, a connection area GND, a left channel connection area L, and a right channel connection area R, respectively. Since the arrangement of these signal conducting regions is slightly different for different manufacturers, the arrangement of the two conductive plugs 212, 222 that are widely used is disclosed in FIG.
揚聲裝置210所配備的傳導插頭212是頻果(Apple)公司主要採用之信號傳導區的排列方式,其是將接地區GND設置於麥克風連接區MIC以及左聲道連接區L與右聲道連接區R之間,因此傳導插頭212的信號傳導區由左至右的排列方式便是麥克風連接區MIC、接地區GND、右聲道連 接區R以及左聲道連接區L。左聲道連接區L以及右聲道連接區R也可以相互置換位置。The conductive plug 212 provided by the speaker device 210 is an arrangement of the signal transmission area mainly used by the company, which is to set the connection area GND to the microphone connection area MIC and the left channel connection area L and the right channel. Between the connection areas R, the signal transmission area of the conductive plug 212 is arranged from left to right by the microphone connection area MIC, the connection area GND, and the right channel connection. The connection area R and the left channel connection area L. The left channel connection area L and the right channel connection area R may also be replaced with each other.
揚聲裝置220所配備的傳導插頭222則是其他公司主要採用之信號傳導區的排列方式,其是將麥克風連接區MIC設置於接地區GND以及左聲道連接區L與右聲道連接區R之間,因此傳導插頭222的信號傳導區由左至右的排列方式便是接地區GND、麥克風連接區MIC、右聲道連接區R以及左聲道連接區L。傳導插頭212、222的每個信號傳導區之間利用絕緣環250相互隔離,因此揚聲裝置210、220所配備的麥克風型插頭212、222也會由於這四個環狀的信號傳導區而被稱為四環插頭。The conductive plug 222 provided by the speaker device 220 is an arrangement of signal conducting areas mainly used by other companies, and the microphone connecting area MIC is set in the connection area GND and the left channel connection area L and the right channel connection area R. Therefore, the left-to-right arrangement of the signal conducting regions of the conductive plug 222 is the grounding area GND, the microphone connection area MIC, the right channel connection area R, and the left channel connection area L. Each of the signal conducting regions of the conductive plugs 212, 222 is isolated from each other by an insulating ring 250, so that the microphone-type plugs 212, 222 provided by the speaker devices 210, 220 are also due to the four ring-shaped signal conducting regions. It is called a four-ring plug.
請參照圖3,本實施例中具備非麥克風型插頭232、242之揚聲裝置230、240則以外接式擴音喇叭以及立體聲耳機作為舉例。外接式擴音喇叭以及立體聲耳機皆無麥克風,因此非麥克風型插頭232、242的信號傳導區並不需要麥克風連接區MIC,而是與接地區GND相連接。也就是說,非麥克風型插頭232、242的信號傳導區由左至右的排列方式便是接地區GND、右聲道連接區R以及左聲道連接區L,而非麥克風型插頭232、242中的接地區GND是麥克風型插頭212、222中的接地區GND及麥克風連接區MIC之集合。揚聲裝置230、240所配備的非麥克風型插頭232、242會由於這三個環狀的信號傳導區而被稱為三環插頭。Referring to FIG. 3, in the present embodiment, the speaker devices 230 and 240 having the non-microphone type plugs 232 and 242 are an external sound horn and a stereo earphone as an example. The external loudspeakers and stereo headphones have no microphones, so the signal transmission area of the non-microphone connectors 232, 242 does not require the microphone connection area MIC, but is connected to the connection area GND. That is to say, the left-to-right arrangement of the signal conducting areas of the non-microphone type plugs 232, 242 is the ground area GND, the right channel connection area R, and the left channel connection area L, instead of the microphone type plugs 232, 242. The connection area GND in the middle is a collection of the connection area GND and the microphone connection area MIC in the microphone type plugs 212, 222. The non-microphone type plugs 232, 242 provided by the speaker devices 230, 240 are referred to as three-ring plugs due to the three ring-shaped signal conducting regions.
因此,由於外接式擴音喇叭的傳導插頭屬於非麥克風型插頭(三環插頭),而歐洲視頻設備安全標準EN 503332 在測試使用之具備麥克風之耳機的傳導插頭屬於麥克風型插頭(四環插頭),因此,本案實施例的處理單元110便利用插頭偵測電路120來準確判斷目前***行動電子裝置100的傳導插頭為麥克風型插頭(四環插頭)還是非麥克風型插頭(三環插頭),便可區別出揚聲裝置的種類,藉此調整行動電子裝置的最大輸出音量增益為符合安全標準規範的規範音量增益,或是大於規範音量增益的非規範音量增益。Therefore, since the conductive plug of the external loudspeaker is a non-microphone type plug (three-ring plug), the European video equipment safety standard EN 503332 The conductive plug of the microphone with the microphone is tested to be a microphone type plug (four-ring plug). Therefore, the processing unit 110 of the embodiment of the present invention conveniently uses the plug detecting circuit 120 to accurately determine the conductive plug currently inserted into the mobile electronic device 100. Whether the microphone type plug (four-ring plug) or the non-microphone type plug (three-ring plug) can distinguish the type of the speaker device, thereby adjusting the maximum output volume gain of the mobile electronic device to the standard volume gain according to the safety standard specification. Or a non-canonical volume gain greater than the standard volume gain.
圖4是根據本發明一實施例說明行動電子裝置100***揚聲裝置410的示意圖,圖5是根據本發明一實施例說明行動電子裝置100的音量控制方法的流程圖。圖4中的各元件跟圖1相同。請同時參照圖4及圖5,步驟S510中,處理單元110偵測行動電子裝置100的耳機接孔130是否***揚聲裝置410的傳導插頭412。當步驟S510為否時,則處理單元110會回到步驟S510以持續偵測。FIG. 4 is a schematic diagram illustrating the insertion of the mobile electronic device 100 into the speaker device 410 according to an embodiment of the invention. FIG. 5 is a flow chart illustrating the volume control method of the mobile electronic device 100 according to an embodiment of the invention. The components in Fig. 4 are the same as in Fig. 1. Referring to FIG. 4 and FIG. 5 simultaneously, in step S510, the processing unit 110 detects whether the earphone jack 130 of the mobile electronic device 100 is inserted into the conductive plug 412 of the speaker device 410. When the step S510 is NO, the processing unit 110 returns to the step S510 to continue the detection.
當傳導插頭412已***耳機接孔130時(步驟S510為是),則進入步驟S520,處理單元110將行動電子裝置110的輸出音量值調整為保護音量值,藉以保護人耳避免被突發音量所傷害。When the conductive plug 412 has been inserted into the earphone jack 130 (YES in step S510), the process proceeds to step S520, and the processing unit 110 adjusts the output volume value of the mobile electronic device 110 to the protection volume value, thereby protecting the human ear from being burstped. Injury.
於步驟S530中,插頭偵測電路120判斷傳導插頭412為麥克風型插頭(四環插頭)還是非麥克風型插頭(三環插頭),並利用偵測信號DS通知處理單元110。於圖4中,耳機接孔130分別具有連接器420、430、440以及450, 藉以分別電性連接到傳導插頭412的四個信號傳導區,使得插頭偵測電路120得以判斷傳導插頭412的種類。In step S530, the plug detecting circuit 120 determines whether the conductive plug 412 is a microphone type plug (four-ring plug) or a non-microphone type plug (three-ring plug), and notifies the processing unit 110 by using the detection signal DS. In FIG. 4, the earphone jacks 130 have connectors 420, 430, 440, and 450, respectively. The four signal conducting regions are electrically connected to the conductive plugs 412, respectively, so that the plug detecting circuit 120 can determine the type of the conductive plugs 412.
當***的傳導插頭412為麥克風型插頭(四環插頭)時,表示***的揚聲裝置410是具備麥可風的耳機時,則從步驟S530進入步驟S540,處理單元110為了符合相關的安全標準及規範,便將行動電子裝置100的最大輸出音量增益調整為符合規範的規範音量增益。本實施例中,上述之規範音量增益可以是在輸出波形為具備零分貝(0dB)雜訊的正弦波時具備方均根為300豪伏(mVrms)的輸出電壓振幅。When the inserted conductive plug 412 is a microphone type plug (four-ring plug), when the inserted speaker device 410 is a microphone with a microphone, the process proceeds from step S530 to step S540, and the processing unit 110 complies with relevant safety standards. And the specification, the maximum output volume gain of the mobile electronic device 100 is adjusted to meet the specification of the standard volume gain. In this embodiment, the above-mentioned standard volume gain may be an output voltage amplitude having a rms of 300 volts (mV rms) when the output waveform is a sine wave with zero decibel (0 dB) noise.
相對地,當***的傳導插頭412為非麥克風型插頭(三環插頭)時,表示***的揚聲裝置410可能是外接式擴音喇叭時,則從步驟S530進入步驟S550,為了提高對外接式擴音喇叭的推動力以輸出較大音量,處理單元110可將行動電子裝置100的最大輸出音量增益調整為大於規範音量增益的非規範音量增益。本實施例中,上述之規範音量增益可以是在輸出波形為具備零分貝(0dB)雜訊的正弦波時具備方均根為800豪伏(mVrms)的輸出電壓振幅。本案實施例也可以讓使用者透過處理單元110而自行調整預設之非規範音量增益的大小,本案並不受限於此。In contrast, when the inserted conductive plug 412 is a non-microphone type plug (three-ring plug), indicating that the inserted speaker device 410 may be an external sound horn, the process proceeds from step S530 to step S550, in order to improve the external connection. The driving force of the loudspeaker is output to a larger volume, and the processing unit 110 can adjust the maximum output volume gain of the mobile electronic device 100 to a non-canonical volume gain that is greater than the standard volume gain. In this embodiment, the above-mentioned standard volume gain may be an output voltage amplitude having a square root of 800 volts (mV rms) when the output waveform is a sine wave having zero decibel (0 dB) noise. The embodiment of the present invention also allows the user to adjust the size of the preset non-canonical volume gain through the processing unit 110. The present invention is not limited thereto.
綜上所述,本發明實施例所述的行動電子裝置可以偵測揚聲裝置的傳導插頭是否***,並且判斷此傳導插頭的種類。當使用者將揚聲裝置***行動電子裝置時,行動電子裝置便立即地將其輸出音量值自動調整至保護音量值, 從而避免突發的過大音量傷害人耳。插頭感測電路藉由感測此傳導插頭是具備四個信號傳導區(麥克風型插頭)還是三個信號傳導區(非麥克風型插頭),藉以判斷揚聲裝置的種類,並利用判斷結果調整最大音量的電壓振幅,從而限制具備麥克風之耳機的最大音量值而符合耳機限制規範;並可增加外接式擴音喇叭的最大音量,從而滿足使用者對於外接式擴音喇叭的大音量輸出。In summary, the mobile electronic device according to the embodiment of the present invention can detect whether the conductive plug of the speaker device is inserted, and determine the type of the conductive plug. When the user inserts the speaker device into the mobile electronic device, the mobile electronic device automatically adjusts its output volume value to the protection volume value. So as to avoid sudden excessive volume to hurt the human ear. The plug sensing circuit detects whether the conductive plug has four signal conducting regions (microphone type plugs) or three signal conducting regions (non-microphone type plugs), thereby judging the type of the speaker device and adjusting the maximum using the judgment result. The voltage amplitude of the volume, thereby limiting the maximum volume value of the earphone with the microphone and complying with the earphone limit specification; and increasing the maximum volume of the external loudspeaker, thereby satisfying the user's large volume output of the external loudspeaker.
雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明之精神和範圍內,當可作些許之更動與潤飾,故本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.
100‧‧‧行動電子裝置100‧‧‧Mobile electronic devices
110‧‧‧處理單元110‧‧‧Processing unit
120‧‧‧插頭偵測電路120‧‧‧plug detection circuit
130‧‧‧耳機接孔130‧‧‧ headphone jack
140‧‧‧音訊處理器140‧‧‧Optical processor
210、220、230、240、410‧‧‧揚聲裝置210, 220, 230, 240, 410‧‧‧ speaker devices
212、222、232、242‧‧‧傳導插頭212, 222, 232, 242‧‧‧ Conductive plug
250‧‧‧絕緣環250‧‧‧Insulation ring
420、430、440、450‧‧‧連接器420, 430, 440, 450‧‧‧ connectors
DS‧‧‧偵測信號DS‧‧‧Detection signal
HDS‧‧‧耳機偵測信號HDS‧‧‧ headphone detection signal
MIC‧‧‧麥克風連接區MIC‧‧‧ microphone connection area
GND‧‧‧接地區GND‧‧‧Connected area
L‧‧‧左聲道連接區L‧‧‧Left channel connection area
R‧‧‧右聲道連接區R‧‧‧Right channel connection area
圖1是根據本發明一實施例說明行動電子裝置的功能方塊圖。1 is a functional block diagram illustrating a mobile electronic device in accordance with an embodiment of the present invention.
圖2是配備麥克風型插頭之揚聲裝置及行動電子裝置的示意圖。2 is a schematic view of a speaker device and a mobile electronic device equipped with a microphone type plug.
圖3是配備非麥克風型插頭之揚聲裝置及行動電子裝置的示意圖。3 is a schematic view of a speaker device and a mobile electronic device equipped with a non-microphone type plug.
圖4是根據本發明一實施例說明行動電子裝置***揚聲裝置的示意圖。4 is a schematic diagram showing the insertion of a mobile electronic device into a speaker device according to an embodiment of the invention.
圖5是根據本發明一實施例說明行動電子裝置的音量控制方法的流程圖。FIG. 5 is a flow chart illustrating a volume control method of a mobile electronic device according to an embodiment of the invention.
S510~S550‧‧‧步驟S510~S550‧‧‧Steps
Claims (10)
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TW200720994A (en) * | 2005-11-30 | 2007-06-01 | Mitac Int Corp | Method for automatically detecting and adjusting volume during sound switching |
US20070129828A1 (en) * | 2005-12-07 | 2007-06-07 | Apple Computer, Inc. | Portable audio device providing automated control of audio volume parameters for hearing protection |
TW200814466A (en) * | 2006-09-12 | 2008-03-16 | Inventec Corp | Host electronic apparatus, augmentative electronic apparatus and extensible electronic system |
US20120207318A1 (en) * | 2011-02-14 | 2012-08-16 | Sony Corporation | Sound signal output apparatus, speaker apparatus, and sound signal output method |
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TW200720994A (en) * | 2005-11-30 | 2007-06-01 | Mitac Int Corp | Method for automatically detecting and adjusting volume during sound switching |
US20070129828A1 (en) * | 2005-12-07 | 2007-06-07 | Apple Computer, Inc. | Portable audio device providing automated control of audio volume parameters for hearing protection |
TW200814466A (en) * | 2006-09-12 | 2008-03-16 | Inventec Corp | Host electronic apparatus, augmentative electronic apparatus and extensible electronic system |
US20120207318A1 (en) * | 2011-02-14 | 2012-08-16 | Sony Corporation | Sound signal output apparatus, speaker apparatus, and sound signal output method |
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