Patent Publication Number: US-2015078557-A1

Title: Audio system

Description:
BACKGROUND 
     1. Technical Field 
     The present invention provides an audio system, particularly to an audio system capable of selecting wireless headset mode or audio mode. 
     2. Related Art 
     Among all the audio systems, some use wireless audio unit to reduce the volume of the specific audio unit or achieve the multichannel sound effect. Besides, high-power or large audio system can provide large volume and high quality sound output for users to enjoy. 
     However, no matter large or small audio system, people can be disturbed when the aforementioned audio systems are in use, which can lead to inconvenience. Particularly, the large audio system can create large decibel sound which may influence the environment even more. 
     Although those problems mentioned above can be solved by using a wired headset, however, the wired headset can be restricted by the wire, which may cause inconvenience. 
     BRIEF SUMMARY 
     The present invention provides an audio system with wireless headsets. The present invention also provides another audio system where the audio output therefrom is selectable between the wireless headset mode and the audio mode. 
     The present invention also provides another audio system, when the wireless headset of the audio system is turned on, the speaker of the audio device will change to mute mode. 
     The present invention also provides still another audio system, which uses different audio signal processing method for wireless headset mode and audio mode, thereby optimizing the outputted sound effect. 
     The technique used in the present invention as follows: The present invention provides an audio system, which includes a major audio device, a wireless audio device, and a wireless headset device. The major audio device includes an audio input selection unit, a digital signal processing unit, a speaker driving unit, a wireless transceving unit, a control unit, and a speaker. The major audio device is connected to all kinds of audio input, and the audio input selection unit is used to select an audio signal of the audio input. After being processed by the digital signal processing unit, the audio signal makes the speaker driving unit to drive the speaker, and the audio signal being selected is sent to the air via the wireless transceving unit. The control unit is used for calculating and processing the audio signal. The wireless audio device includes a first wireless transceving unit, a first control unit, a first speaker driving unit and a first speaker. The first wireless transceving unit receives a wireless signal sent from the major audio device, and further makes the first speaker driving unit to drive the first speaker to output the sound. The first control unit is used for calculating and processing the wireless signal. The wireless headset device includes a second wireless transceving unit, a second speaker driving unit, a second control unit, and a second speaker. The second transceving unit receives a wireless signal sent from the major audio device, and further makes the second speaker driving unit to drive the second speaker to output the sound. The second control unit is used for calculating and processing the wireless signal. When the wireless headset is turned on, a signal will be sent to the major audio device to turn off the audio output from the speaker of the major audio device and the first speaker of the wireless audio device, thus entering mute mode. 
     For the aforementioned audio system, when the wireless headset is turned on, a signal will be sent to the major audio device from the second wireless transceving unit after being processed by the second control unit. The wireless transceving unit of the major audio device receives the signal, and the signal is processed by the control unit to further drive the speaker driving unit to stop the audio output from the speaker. The wireless transceving unit sends a mute order signal to the wireless audio device. After the wireless audio device receives the mute order signal via the wireless transceving unit, the mute order signal is processed by the control unit to stop the audio output from the first speaker. 
     For the aforementioned audio system, when the wireless transceving unit of the major audio device receives the turn-on signal of the wireless headset, the control unit will inform the digital signal processing unit to alter the audio signal processing method to wireless headset mode, which improves the outputted sound quality of the headset. 
     For the aforementioned audio system, the headset mode uses a wireless headset algorithm. 
     For the aforementioned audio system, when the wireless headset is turned off, the second control unit orders the second wireless transceving unit to send a corresponding signal to the major audio device. After the wireless transceving unit of the major audio device receives the corresponding signal, the corresponding signal is processed by the control unit. The control unit informs the digital signal processing unit to alter the audio signal processing method to audio mode, and the wireless audio device is informed via the wireless transceving unit to improve the outputted sound quality of the audio device and the wireless audio device. 
     For the aforementioned audio system, the major audio device further includes an user interface for displaying and inputting information. 
     For the aforementioned audio system, the wireless headset device further includes an user interface for inputting information. 
     The advantage of the present invention is: By receiving and selecting all kinds of audio input with the major audio device, not only the major audio device can output sound, but also being able to send the sound to the wireless audio device and the wireless headset device via the wireless transceving unit. When the headset is in use, the user does not need to play the music via the major audio device and the wireless audio device. Therefore, when the headset is turned on, the audio system will automatically turns off the sound output of the major audio device and the wireless audio device. The wireless transceving units used in wireless headset device and the wireless audio device have a function of reciprocation, which can return the using status back to the major audio device. The major audio device can choose different audio processing modes based on different audio players, thereby achieving the best sound effect. Besides, by integrating the wireless headset and the wireless audio device, the audio system according to the present invention can share the circuits of input, audio processing, and wireless transceving unit, thereby reducing the cost of the audio system and minimizing the inconvenience of repeatedly reconnecting the audio signal between two audio playing devices. Moreover, by the integrated user interface, the switch between the two audio playing devices can be simplified as well. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and other features and advantages of the various embodiments disclosed herein will be better understood with respect to the following description and drawings, in which like numbers refer to like parts throughout, and in which: 
         FIG. 1  is a stereogram of a preferred embodiment of an audio system according to the present invention; 
         FIG. 2  is a schematic diagram of the preferred embodiment of the audio system according to the present invention; 
         FIG. 3  is a schematic diagram of the preferred embodiment of the audio system wherein a major audio device wiredly linked to an user interface according to the present invention; and 
         FIG. 4  is a schematic diagram of the preferred embodiment of the audio system wherein a major audio device wirelessly linked to an user interface according to the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     Referring to  FIGS. 1 and 2 , the audio system  100  according to the present invention includes a major audio device  10 , a wireless audio device  20 , and a wireless headset device  30 . 
     Referring to  FIG. 2 , in a preferred embodiment according to the present invention, the major audio device  10  includes an audio input selection unit  11 , a digital signal processing unit  12 , a wireless transceving unit  13 , a control unit  14 , a speaker driving unit  15 , and a speaker  16 . 
     The major audio device  10  connects all kinds of audio input  40 , such as a television, as shown in  FIG. 1 . The audio input selection unit  11  selects the audio input  40 . After being processed by the digital signal processing unit  12 , the audio input  40  informs the speaker driving unit  15  to drive the speaker  16  to generate sound. Moreover, the selected audio input  40  is sent to the air via the wireless transceving unit  13 , and the control unit  14  is used for calculating and processing the audio input  40 . 
     The aforementioned digital signal processing unit  12  mainly does sound effect processing, such as 3-D effect, high peach or low peach equalizer adjustment, etc. The digital signal processing unit  12  also provides algorithms, such as audio algorithm for using in audio mode, or wireless headset algorithm for using in headset mode. 
     Referring to  FIGS. 3 to 4 , the major audio device  10  further includes an user interface  17  for displaying or inputting information. As shown in  FIG. 3 , the user interface  17  is electrically connected to the control unit  14  in a wired link, while the user interface  17  as shown in  FIG. 4  is connected to the wireless transceving unit  13  in a wireless way. Therefore, the user interface  17  can be independent to the major audio device  10 , or integrates to be installed on the outer surface of the major audio device  10 , or can even be a remote control which can be operated by pressing button, touch pad, voice control, mouse, keyboard, knob, motion control (such as gesture control), etc. 
     Referring to  FIG. 2 , the wireless audio device  20  includes a first wireless transceving unit  21 , a first control unit  22 , a first speaker driving unit  23 , and a first speaker  24 . The first wireless transceving unit  21  receives a wireless signal sent from the major audio device  10 . After being processed and calculated by the first control unit  22 , the wireless signal can inform the first speaker driving unit  23  to drive the first speaker  24  for outputting sound. 
     As shown in  FIG. 1 , the audio system of the preferred embodiment has a wireless audio devices  20 , but can also have more than one audio device  20  as well. 
     Referring to  FIGS. 1 to 2 , the wireless headset device  30  includes a second wireless transceving unit  31 , a second control unit  32 , a second speaker driving unit  33 , and a second speaker  34 . 
     The aforementioned second wireless transceving unit  31  receives the wireless signal sent from the major audio device  10 . After being processed and calculated by the second control unit  32 , the wireless signal informs the second speaker driving unit  33  to drive the second speaker  34  for outputting sound. 
     Referring to  FIG. 2 , the wireless headset device  30  further includes an user interface  35  for inputting information, such as turning on the wireless headset device  30 . In the present embodiment, the user interface  35  is used for inputting information, such as panel, button, or switch, etc. 
     In the  FIGS. 1 and 2 , the audio system of the present embodiment is equipped with a wireless headset  30 . Practically, more than one wireless headset  30  is also acceptable. 
     Referring to all the FIGS. in the present embodiment, when connecting the audio input  40  to the major audio device  10  under normal audio mode, the control unit  14  can order the digital signal processing unit  12  to use audio algorithm for providing audio mode. Meanwhile, the speaker driving unit  15  is forced to drive the speaker  16  to output sound, and the wireless transceving unit  13  sends out a wireless signal which is then received by the first wireless transceving unit  21  of the wireless audio device  20  and processed by the first control unit  22 . After that, the first speaker driving unit  23  drives the first speaker  24  to output sound. 
     When the wireless headset device  30  is turned on (operated through the user interface  35 ), a signal will be sent to the major audio device  10  for turning off the sound output of the speaker of the major audio device  10  and the first speaker  24  of the wireless audio device  20 , thus entering a mute mode. 
     For the detail procedure, when the headset device  30  is turned on, a signal will be sent to the second control unit  32 . After being processed by the second control unit  32 , the second wireless transceving unit  31  sends out the signal to the major audio device  10 . The wireless transceving unit  13  of the major audio device  10  receives the signal. The signal is processed by the control unit  14 , and the speaker driving unit  15  is informed to stop the sound output from the speaker  16 . The wireless transceving unit  13  sends out mute order signal to the wireless audio device  20 . The wireless audio device  20  receives the mute order signal via the first wireless transceving unit  21 , and the first control unit  22  processes the signal to turn off the sound output from the first speaker  24 . As mentioned above, after the wireless transceving unit  13  of the major audio device  10  receives the turn-on signal of the wireless headset device  30 , the control unit  14  will inform the digital signal processing unit  12  to alter the audio signal processing method to wireless headset mode, thereby improving the sound quality. 
     As mentioned above, when the wireless headset  30  is turned off, the second control unit  32  orders the second wireless transceving unit  31  to send out the corresponding signal to the major audio device  10 . After the wireless transceving unit  13  of the major audio device  10  receives the corresponding signal, the signal is processed by control unit  14  and then the digital signal processing unit  12  is informed to alter the audio signal processing method to audio mode. Meanwhile, the wireless transceving unit  13  informs the wireless audio device  20  to improve the sound quality of the audio device  10  and the wireless audio device  20 . 
     When in use, users can operate (such as booting) the major audio device  10  and the wireless audio device  20  through the user interface  17 , and set the audio system  100  to audio mode. When turning on the wireless headset device  30  (through the user interface  35 ), the audio system  100  automatically turns to wireless headset mode after the control unit  14  of the major audio device  10  being informed, and the major audio device  10  and the wireless audio device  20  are both being switched to a mute mode. Once the wireless headset  30  is turned off, the audio system  100  returns to audio mode. 
     It is noteworthy that, when there are more than one wireless headset  30  existed in the audio system  100 , turning on any one of the wireless headset device  30  can make the audio system  100  enter headset mode; likewise, when there are more than one wireless audio device  20 , all the wireless audio devices  20  will enter mute mode if any one of them is turned off. Once the mute mode is relieved, all the wireless audio devices  20  will be turned on to output the sound. 
     Since the wireless headset  30  in the present invention can allow the users free from the wire, and the wireless headset  30  can also share the audio source, the digital signal processing unit  12 , and the wireless transceving unit  13  of the original wireless audio device  20 , the installation procedure and structure can be simplified, thereby enhancing the convenience and minimizing the cost. 
     Although the present invention has been described with reference to the foregoing preferred embodiments, it will be understood that the invention is not limited to the details thereof Various equivalent variations and modifications can still occur to those skilled in this art in view of the teachings of the present invention. Thus, all such variations and equivalent modifications are also embraced within the scope of the invention as defined in the appended claims.