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Low-power audio CD player for portable computers

  • US 20020052990A1
  • Filed: 05/29/2001
  • Published: 05/02/2002
  • Est. Priority Date: 03/26/1998
  • Status: Active Grant
First Claim
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1. A computer system adapted to play an audio CD, said computer system comprising:

  • a computer subsystem comprising a system CPU, a digital-audio generating circuit, a digital computer bus coupling said CPU and said digital-audio generator circuit, and a digital computer bus controller; and

    a CD audio subsystem comprising an audio device capable of playing an audio CD and coupled to said digital computer bus controller, an audio amplifier circuit coupled to said audio device, and an audio interface coupled to said digital computer bus in parallel to said digital computer bus controller;

    said audio interface being adapted to generate signals to operate said audio device and play said audio CD when power is not being supplied to said computer subsystem.

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