Abstract:
The present invention discloses a loudspeaker enclosure system having detachable wireless headphones, including: a loudspeaker enclosure and wireless headphones, where the loudspeaker enclosure and the wireless headphones may be used separately; also, the wireless headphones are arranged with a first connector, and the loudspeaker enclosure is arranged with a second connector. The first connector and the second connector may be fit into an electrical plug connection to use the wireless headphones and the loudspeaker enclosure in combination, so that the wireless headphones receive wireless audio signals and output the wireless audio signals to the loudspeaker enclosure to enable the loudspeaker enclosure to play music. The present invention can receive wireless audio signals and play music anywhere with the wireless headphones, and can also share music with others by playing music with the loudspeaker enclosure when necessary.

Description:
BACKGROUND 
       [0001]    1. Technical Field 
         [0002]    The present invention relates to a loudspeaker enclosure system having detachable wireless headphones and a control method thereof. 
         [0003]    2. Related Art 
         [0004]    Loudspeaker enclosures and wireless headphones have been widely used by people at present. A loudspeaker enclosure is generally arranged with an audio input interface for data cables to be plugged in; when the loudspeaker enclosure is used, the audio input interface and an audio source output apparatus are connected through the data cable to receive audio signals to play music with loudspeakers. The wireless headphones may receive wireless audio signals from the audio source output apparatus with a wireless receiving module to play music with a wireless headphone speaker. 
         [0005]    When the foregoing loudspeaker enclosure is used, only a data cable can be used to receive audio signals from the audio source output apparatus, that is, only wired audio input manner can be used for music listening, while a wireless audio input manner cannot be used for music listening. Also, the loudspeaker enclosure is not portable for music playing and inconvenient to use, while the foregoing wireless headphones can only be used for a single person to listen to music and cannot be used to share music with others. 
       SUMMARY 
       [0006]    The technical problem to be solved in the present invention is to provide a loudspeaker enclosure system having detachable wireless headphones that can receive wireless audio signals and play music anywhere with the wireless headphones, and can share music with others by playing music with the loudspeaker enclosure when necessary. 
         [0007]    To solve the foregoing technical problem, the present invention provides a loudspeaker enclosure system having detachable wireless headphones, including a loudspeaker enclosure, where the loudspeaker enclosure includes an audio input interface, a second audio power amplifier, and loudspeakers; and further including wireless headphones, where the wireless headphones include a wireless receiving module, a first controller, a first audio power amplifier, a first audio switch, a wireless headphone speaker, a filter and voltage regulating circuit, and a first connector, where the wireless receiving module, the first controller, the first audio power amplifier, and the first audio switch are electrically connected in sequence, two audio signal output terminals of the first audio switch are electrically connected to the loudspeakers and the first connector respectively, and the first connector is electrically connected to the first controller through the filter and voltage regulating circuit; and the loudspeaker enclosure further includes a second controller, a second audio switch, and a second connector, where the second audio switch, the second audio power amplifier, and the loudspeakers are electrically connected in sequence, two audio signal input terminals of the second audio switch are electrically connected to the audio input interface and the second connector respectively, the second connector is electrically connected to the second audio switch through the second controller, and the first connector and the second connector are detachable electrical matching plug and receptacle connections. 
         [0008]    As an improvement, the wireless headphones further include a charging circuit and a rechargeable battery, a current output terminal of the first controller is electrically connected to the charging circuit and the rechargeable battery in sequence, and the loudspeaker enclosure further includes a power supply module that is electrically connected to the second connector and the second audio power amplifier separately. 
         [0009]    Present invention further provides a control method of the loudspeaker enclosure system having detachable wireless headphones, where when the first connector and the second connector are plug-connected, voltage of a pin of the first connector is output to the first controller through the filter and voltage regulating circuit, and after the voltage output to the first controller through the filter and voltage regulating circuit is stabilized at a certain voltage value and lasts at least 100 milliseconds, the first controller controls the audio signal output terminal of the first audio switch to switch to the first connector. 
         [0010]    When the first connector and the second connector are plug-connected, the second controller checks the voltage of a grounding contact of the first connector, and after it is detected that the voltage of the grounding contact of the first connector is stabilized at zero volt and lasts at least 100 milliseconds, the second controller sends a control signal to the second audio switch, and the audio signal input terminal of the second audio switch is switched to the second connector. 
         [0011]    When the first connector and the second connector are plug-connected, the voltage of a pin of the first connector is output to the first controller through the filter and voltage regulating circuit, and after the voltage output to the first controller through the filter and voltage regulating circuit is stabilized at a certain voltage value and lasts at least 100 milliseconds, the first controller outputs current to the charging circuit to charge the rechargeable battery. 
         [0012]    After the foregoing structure and method are used, compared with the prior art, the present invention has the following advantages: 
         [0013]    The present invention has three working modes: 1. The wireless headphones are used separately, and in this case, the wireless headphones may receive wireless audio signals and play music with the wireless headphone speakers; in this case, the wireless headphones implement a function of receiving wireless audio signals and playing music anywhere. 2. The loudspeaker enclosure is used separately, and in this case, the loudspeaker enclosure may play music with the wired audio input. 3. The wireless headphones and the loudspeaker enclosure are used in combination, and in this case, the first connector and the second connector fit in an electrical plug and receptacle connection, so that wireless audio signals received by the wireless headphones is transmitted to the loudspeaker enclosure and played with the loudspeakers, thereby implementing a function of sharing music with others when there is crowd. That is, the present invention can both receive wireless audio signals and play music anywhere with the wireless headphones and share music with others by playing music with the loudspeaker enclosure when necessary, which ensures versatility and convenient use; also, the loudspeaker enclosure can further be used as a base for placing the wireless headphones, making it more convenient to place the wireless headphones. 
         [0014]    In addition, when the first connector and the second connector are plug-connected, the audio signal output terminal of the first audio switch is switched to the first connector only after the voltage of the pin of the first connector is stabilized at a voltage value and the voltage value lasts at least 100 milliseconds. After the voltage of the pin of the first connector is stabilized at a certain voltage value and the voltage value lasts at least 100 milliseconds, it indicates that the first connector and the second connector already have stable contact. In this way, it can avoid that noise is generated because the audio signal output terminal of the first audio switch is switched before the first connector and the second connector have stable contact. 
         [0015]    In addition, when the first connector and the second connector are plug-connected, the signal input terminal of the second audio switch is switched to the second connector only after the voltage of the grounding contact of the first connector is stabilized at zero volt and lasts at least 100 milliseconds. After the voltage of the grounding contact of the first connector is stabilized at zero volt and lasts at least 100 milliseconds, it indicates that the first connector and the second connector already have stable contact. In this way, it can avoid that noise is generated because the audio signal input terminal of the second audio switch is switched before the first connector and the second connector have stable contact. 
         [0016]    In addition, after the wireless headphones are placed on the loudspeaker enclosure, the power supply module of the loudspeaker enclosure may charge the rechargeable battery of the wireless headphones, making the charging of the wireless headphones more convenient, and when the first connector and the second connector are plug-connected, the rechargeable battery is charged only after the voltage of the pin of the first connector is stabilized at a certain voltage value and lasts at least 100 milliseconds. After the voltage of the pin of the first connector is stabilized at a certain voltage value and lasts at least 100 milliseconds, it indicates that the first connector and the second connector already have stable contact. In this way, it can avoid that the first controller shuts down due to jumping of the output voltage of the first controller because the rechargeable battery is charged before the first connector and the second connector have stable contact, resulting in a shutdown of the wireless headphones. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0017]      FIG. 1  is a schematic structural view of a loudspeaker enclosure according to the present invention; 
           [0018]      FIG. 2  is a schematic structural view of wireless headphones according to the present invention; 
           [0019]      FIG. 3  is a schematic structural view when wireless headphones are placed on a loudspeaker enclosure according to the present invention; and 
           [0020]      FIG. 4  is a circuit block diagram according to the present invention. 
       
    
    
       [0021]      1 , Loudspeaker enclosure;  101 , Second connector;  102 , Second controller;  103 , Second audio switch;  104 , Audio input interface;  105 , Power supply module;  106 , Second audio power amplifier;  107 , Second left speaker;  108 , Second right speaker;  2 , Wireless headphones;  201 , First connector;  202 , Wireless receiving module;  203 , First controller;  204 , First audio power amplifier;  205 , First audio switch;  206 , Filter and voltage regulating circuit;  207 , Charging circuit;  208 , Rechargeable battery;  209 , First left speaker; and  210 , First right speaker. 
       DETAILED DESCRIPTION 
       [0022]    The present invention is further illustrated in detail with reference to accompanying drawings and specific implementation embodiments. 
         [0023]    As shown in  FIG. 1  and  FIG. 4 , a loudspeaker enclosure  1  in the present invention includes an audio input interface  104 , a second audio power amplifier  106 , loudspeakers, a second controller  102 , a second audio switch  103 , and a second connector  101 . The loudspeakers include a second left speaker  107  and a second right speaker  108 . The second audio switch  103 , the second audio power amplifier  106 , and the loudspeaker are electrically connected in sequence, that is, an audio signal output terminal of the second audio switch  103  is electrically connected to an audio signal input terminal of the second audio power amplifier  106 , an audio signal output terminal of the second audio power amplifier  106  is electrically connected to the second left speaker  107  and the second right speaker  108  respectively, two audio signal input terminals of the second audio switch  103  are electrically connected to the audio input interface  104  and the second connector  101  respectively, and the second connector  101  is electrically connected to the second audio switch  103  through the second controller  102 . That is, the audio signal input terminal of the second audio switch  103  is switchable between the audio input interface  104  and the second connector  101 . When the audio signal input terminal of the second audio switch  103  is switched to the audio input interface  104 , the audio signal input terminal of the second audio power amplifier  106  receives audio signals transmitted through the audio input interface  104 . When the audio signal input terminal of the second audio switch  103  is switched to the second connector  101 , the audio signal input terminal of the second audio power amplifier  106  receives audio signals transmitted by the second connector  101 . The switch of the second audio switch  103  is controlled with the second controller  102 . An input terminal of the second controller  102  is electrically connected to a pin of the second connector  101  and is used for receiving the voltage of the pin of the second connector  101 . An output terminal of the second controller  102  is connected to the second audio switch and is used for controlling the second audio switch  103  to switch the audio signal input terminal. 
         [0024]    As shown in  FIG. 2  and  FIG. 4 , wireless headphones  2  in the present invention include a wireless receiving module  202 , a first controller  203 , a first audio power amplifier  204 , a first audio switch  205 , a wireless headphone speaker, a filter and voltage regulating circuit  206 , and a first connector  201 . The wireless headphone speakers include a first left speaker  209  and a first right speaker  210 . The wireless receiving module  202 , the first controller  203 , the first audio power amplifier  204 , and the first audio switch  205  are electrically connected in sequence. That is, a data output terminal of the wireless receiving module  202  is electrically connected to an input terminal of the first controller  203 , an output terminal of the first controller  203  is electrically connected to an audio signal input terminal of the first audio power amplifier  204 , an audio signal output terminal of the first audio power amplifier  204  is electrically connected to an audio signal input terminal of the first audio switch  205 , two audio signal output terminals of the first audio switch  205  are electrically connected to the loudspeakers and the first connector  201  respectively, and the first connector  201  is electrically connected to the first controller  203  through the filter and voltage regulating circuit  206 . That is, an audio signal output terminal of the first audio switch  205  is switchable between the wireless headphone speakers and the first connector  201 . When the audio signal output terminal of the first audio switch  205  is switched to the wireless headphone speakers, the audio signal output terminal of the first audio switch  205  outputs audio signals to the first left speaker  209  and the first right speaker  210 . When the audio signal output terminal of the first audio switch  205  is switched to the first connector  201 , the audio signal output terminal of the first audio switch  205  outputs audio signals to the first connector  201 . The switch of the first audio switch  205  is controlled with the first controller  203 . A voltage input terminal of the filter and voltage regulating circuit  206  is electrically connected to a pin of the first connector  201 , and a voltage output terminal of the filter and voltage regulating circuit  206  is electrically connected to an input terminal of the first controller  203 . 
         [0025]    The wireless headphones  2  may receive wireless audio signals by using a Bluetooth technology or a WIFI technology, that is, the wireless receiving module  202  may be a Bluetooth module or a WIFI module, and the first controller  203  may be a built-in microprocessor on a Bluetooth chip or a WIFI chip. 
         [0026]    The first connector  201  and the second connector  101  fit in a detachable electrical plug and receptacle connection. Referring to  FIG. 3  and  FIG. 4 , in this case, the first connector  201  and the second connector  101  are plug-connected, the wireless headphones  2  are placed on the loudspeaker enclosure  1 , and the wireless headphones  2  output the wireless audio signals received by the wireless receiving module  202  to the loudspeaker enclosure  1 , and plays music with the second left speaker  107  and the second right speaker  108 . In this case, the audio signal output terminal of the first audio switch  205  is switched to the first connector  201 , and the audio signal input terminal of the second audio switch  103  is switched to the second connector  101 . Because in this case, the first connector  201  and the second connector  101  are electrically plug-connected, the first connector  201  and the second connector  101  are arranged with multiple matching pins to transmit audio signals, voltage, and current, so that the wireless audio signals received by the wireless receiving module  202  is transmitted to the second left speaker  107  and the second right speaker  108  through the first controller  203 , the first audio power amplifier  204 , the first audio switch  205 , the first connector  201 , the second connector  101 , the second audio switch  103 , and the second audio power amplifier  106  in sequence. Referring to  FIG. 1  and  FIG. 2 , in this case, the first connector  201  and the second connector  101  are detached, and in this case, the wireless headphones  2  and the loudspeaker enclosure  1  are detached, and the wireless headphones  2  and the loudspeaker enclosure  1  may be separately used. That is, in this case, the audio signal output terminal of the first audio switch  205  is switched to the first left speaker  209  and the first right speaker  210 , and the wireless audio signals received by the wireless receiving module  202  is transmitted to the first left speaker  209  and the first right speaker  210  through the first controller  203 , the first audio power amplifier  204 , and the first audio switch  205  in sequence. In this case, the audio signal input terminal of the second audio switch  103  is switched to the audio input interface  104 , and the output interface of a sound source output apparatus is connected to the audio input interface  104  through a data cable, so that the audio signals received through the audio input interface  104  is transmitted to the second left speaker  107  and the second right speaker  108  through the second audio switch  103  and the second audio power amplifier  106  in sequence. 
         [0027]    When the first connector  201  and the second connector  101  are plug-connected, the voltage of the pin of the first connector  201  is output to the first controller  203  through the filter and voltage regulating circuit  206 . After the voltage output to the first controller  203  through the filter and voltage regulating circuit  206  is stabilized at 5 V and 5 V lasts at least 100 milliseconds, the first controller  203  sends a signal to the first audio switch  205 , and controls the switching of the audio signal output terminal of the first audio switch  205 , that is, controls the audio signal output terminal of the first audio switch  205  to switch from the first left speaker  209  and the first right speaker  210  to the first connector  201 . The reason why the condition that the voltage output to the first controller  203  through the filter and voltage regulating circuit  206  is stabilized at 5 V and 5 V lasts at least 100 milliseconds needs to be met is as follows: When the first connector  201  and the second connector  101  are plug-connected, the first connector  201  and the second connector  101  usually cannot obtain stable contact instantly. If the first audio switch  205  is switched before the first connector  201  and the second connector  101  have stable contact, audio signals may be transmitted intermittently between the first connector  201  and the second connector  101 , thereby generating audio noise, and in this case, the voltage of the pin of the first connector  201  is unstable. After the voltage output to the first controller  203  through the filter and voltage regulating circuit  206  is stabilized at 5 V and 5 V lasts at least 100 milliseconds, it indicates that the first connector  201  and the second connector  101  have stable contact. The voltage of the pin of the first connector  201  becomes stable only after the first connector  201  and the second connector  101  have stable contact. Therefore, if it is detected that the voltage of the pin of the first connector  201  is stable, it indicates that the first connector  201  and the second connector  101  have stable contact, and in this case, the switch of the audio signal output terminal of the first audio switch  205  generates no noise. 
         [0028]    When the first connector  201  and the second connector  101  are plug-connected, the second controller  102  checks the voltage of the grounding contact of the first connector  201 . 
         [0029]    After it is detected that the voltage of the grounding contact of the first connector  201  is stabilized at zero volt and zero volt lasts at least 100 milliseconds, the second controller  102  sends a control signal to the second audio switch  103 , and the audio signal input terminal of the second audio switch  103  is switched to the second connector  101 . When the first connector  201  and the second connector  101  do not have stable contact, the voltage of the grounding contact of the first connector  201  cannot be stabilized at zero volt. In this case, if the audio signal input terminal of the second audio switch  103  is switched, because the first connector  201  and the second connector  101  do not have stable contact, the audio signals are intermittently transmitted between the first connector  201  and the second connector  101 , thereby generating audio noise. When the first connector  201  and the second connector  101  have stable contact, the grounding contact of the first connector  201  is grounded through the second controller  102 , so that the voltage of the grounding contact of the first connector  201  is stabilized at zero volt. Therefore, after it is detected that the voltage of the grounding contact of the first connector  201  is stabilized at zero volt and zero volt lasts at least  100  milliseconds, it indicates that the first connector  201  and the second connector  101  have stable contact. In this case, the switch of the audio signal input terminal of the control second audio switch  103  generates no noise. 
         [0030]    The wireless headphones  2  further include a charging circuit  207  and a rechargeable battery  208 . A current output terminal of the first controller  203  is electrically connected to the charging circuit  207  and the rechargeable battery  208  in sequence. The loudspeaker enclosure  1  further includes a power supply module  105  that is electrically connected to the second connector  102  and the second audio power amplifier  106  separately, and the power supply module  105  provides a 5-V voltage. When the first connector  201  and the second connector  101  are plug-connected, the voltage of the pin of the first connector  201  is output to the first controller  203  through the filter and voltage regulating circuit  206 . After the voltage output to the first controller  203  through the filter and voltage regulating circuit  206  is stabilized at a voltage value and the voltage value lasts at least 100 milliseconds, the first controller  203  outputs a current to the charging circuit  207  to charge the rechargeable battery  208 . After the first connector  201  and the second connector  101  are plug-connected, the power supply module  105  charges the rechargeable battery  208  through the second connector  101 , the first connector  201 , the filter and voltage regulating circuit  206 , the first controller  203 , and the charging circuit  207  in sequence. If the first controller  203  outputs current to charge the rechargeable battery  208  before the first connector  201  and the second connector  101  have stable contact, the first controller  203  may shut down due to the jumping of the output voltage of the first controller  203 , resulting in that the shutdown of the wireless headphones  2 . After the voltage output to the first controller  203  through the filter and voltage regulating circuit  206  is stabilized at a voltage value and the voltage value lasts at least 100 milliseconds, it indicates that the first connector  201  and the second connector  101  have stable contact. In this case, when the first controller  203  outputs a current to charge the rechargeable battery  208 , jitter of an output voltage of the first controller  203  does not occur, thereby avoiding a case that the wireless headphones  2  fail when the first connector  201  and the second connector  101  are plug-connected.