Audio Signal Switching Apparatus

Abstract

An audio signal switching apparatus at least comprises an audio jack, a speaker jack, a detection circuit and a control circuit. The audio jack and the speaker jack are separately configured in a computer system. The detection circuit detects whether the computer system is turned on or turned off. The control circuit is connected to the detection circuit and electrically connects the audio jack to the speaker jack when the computer system is turned off.

What is claimed is: 
     
         1 . An apparatus for switching an audio output path of a computer system, the apparatus comprising:
 an I/O connector configured in the computer system;   a speaker;   a detection circuit arranged to detect whether the computer system is turned on or turned off; and   a control circuit electrically connected to the detection circuit, and arranged to electrically connect the I/O connector to the speaker when the computer system is turned off.   
     
     
         2 . The apparatus of  claim 1 , wherein the I/O connector is configured on a front panel of the computer system. 
     
     
         3 . The apparatus of  claim 1 , wherein the I/O connector is configured on a side panel of the computer system. 
     
     
         4 . The apparatus of  claim 1 , wherein the I/O connector is an audio inputting port or an audio outputting port. 
     
     
         5 . The apparatus of  claim 1 , wherein when the computer system is turned on, the control circuit is arranged to selectively connect one of the I/O connector or the speaker to an audio codec of the computer system. 
     
     
         6 . The apparatus of  claim 1 , wherein the detection circuit and the control circuit are integrated into an audio codec of the computer system. 
     
     
         7 . A computer system, comprising:
 a speaker;   a case having an I/O connector; and   a control circuit electrically connected to the I/O connector, the speaker, wherein when the computer system is turned off, the control circuit is arranged to electrically connect the I/O connector to the speaker.   
     
     
         8 . The computer system of  claim 7 , wherein the I/O connector is configured on a front panel of the case. 
     
     
         9 . The computer system of  claim 7 , wherein the I/O connector is configured on a side panel of the case. 
     
     
         10 . The computer system of  claim 7 , wherein the I/O connector is I/O connector is an audio inputting port or an audio outputting port. 
     
     
         11 . The computer system of  claim 7 , wherein when the computer system is turned on, the control circuit is arranged to selectively connect one of the I/O connector or the speaker to an audio codec of the computer system.