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AUDIO SYSTEM, AND USB/UART COMMON COMMUNICATION SYSTEM FOR THE SAME

  • US 20070180170A1
  • Filed: 01/04/2007
  • Published: 08/02/2007
  • Est. Priority Date: 01/05/2006
  • Status: Active Grant
First Claim
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1. An audio system with an external device, comprising:

  • an adapter having an external device connector at one terminal and a USB connector at another terminal to provide a signal connection therebetween, the external device connector being provided for connection to an external device; and

    an audio device including;

    a USB connector for providing an interface to an external device directly connected thereto or an external device connected through the adapter;

    a multiplexer for selecting one of a USB signal line and a serial signal line as a signal path with respect to the USB connector according to a select control signal;

    a USB controller connected to the external device through a USB communication during a path setting of the USB signal line and decoding a digital audio file received from the external device to thereby output a sound;

    a serial controller connected to the external device through the adapter during a path setting of the serial signal line and receiving song information through a serial communication so as to provide the external device with a device control signal based on a user'"'"'s manipulation; and

    an audio controller for providing the multiplexer with the select control signal according to device identification when the external device is connected through the USB connector, wherein the audio controller provides the digital audio file from the external device through the USB controller when the external device is a USB device, and receives the song information from the external device through the serial controller and provides the device control signal to the external device when the external device is not the USB device, so that the external device is driven according to the device control signal.

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