Patent Publication Number: US-8983094-B2

Title: All-in-one computer audio system

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates to an all-in-one computer audio system. 
     2. Description of Related Art 
     With the development of all-in-one computers, uses of the all-in-one computer is increasing. One use of the all-in-one computer is as an independent display for other equipment. When a conventional all-in-one computer is only used as a display, there is no independent audio circuit in the conventional all-in-one computer to response to the equipment, thus, the conventional all-in-one computer can not function as a display with audio function. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING 
       Many aspects of the embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. 
       The FIGURE is a block diagram of an exemplary embodiment of an all-in-one computer audio system connected to an electronic device and an audio device. 
     
    
    
     DETAILED DESCRIPTION 
     The disclosure, including the accompanying drawing, is illustrated by way of example and not by way of limitation. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one. 
     Referring to the FIGURE, an exemplary embodiment of an all-in-one computer audio system  100  includes an audio chip  10 , a switch  20 , a multi-function controller  30 , a high definition multimedia interface (HDMI)  40 , an audio interface  50 , a first audio signal amplifier  60 , a second audio signal amplifier  70 , a speaker  80 , and a woofer  90 . The multi-function controller  30  is connected to the audio chip  10 , the switch  20 , the HDMI  40 , and the audio interface  50 . The multi-function controller  30  is also respectively connected to the speaker  80  and the woofer  90  by the first and second audio signal amplifiers  60  and  70 . The audio interface  50  is connected to the switch  20 . 
     The HDMI  40  is connected to an electronic device  200 , such as a host computer. When the electronic device  200  is turned on, the electronic device  200  outputs a high definition multimedia signal to the multi-function controller  30  through the HDMI  40 . 
     The audio interface  50  is connected to an audio device  300 , such as an earphone. 
     When only the audio chip  10  outputs a first audio signal to the multi-function controller  30 , the multi-function controller  30  only detects the first audio signal, and turns on the switch  20  to make the audio chip  10  transmit the audio signal to the audio device  300  through the audio interface  50  directly. At the same time, the multi-function controller  30  outputs the first audio signal to the first and second audio signal amplifiers  60  and  70 . The first and second audio signal amplifiers  60  and  70  amplify the first audio signal and output the amplified first audio signal to the speaker  80  and the woofer  90  respectively. 
     When the electronic device  200  connected to the HDMI  40  is turned on, the electronic device  200  outputs the high definition multimedia signal to the multi-function controller  30  through the HDMI  40 . When the multi-function controller  30  detects the high definition multimedia signal, whether the multi-function controller  30  detects the first audio signal from the audio chip  10  or not, the multi-function controller  30  turns off the switch  20 . The multi-function controller  30  decodes the high definition multimedia signal into a second audio signal and a video signal. The multi-function controller  30  outputs the video signal to a video circuit (not shown) of an all-in-one computer to display a video. The multi-function controller  30  outputs the second audio signal to the audio device  300  through the audio interface  50 . At the same time, the multi-function controller  30  outputs the second audio signal to the first and second audio signal amplifiers  60  and  70 . The first and second audio signal amplifiers  60  and  70  amplify the second audio signal, and output the amplified second audio signal to the speaker  80  and the woofer  90 . 
     It is to be understood, however, that even though numerous characteristics and advantages of the present disclosure have been set forth in the foregoing description, together with details of the structure and function of the disclosure, the disclosure is illustrative only, and changes may be made in details, especially in matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.