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US 2004/0002780 A1Published application
Computer system with a preamplifier circuit mounted on a motherboard
OwnerTing-Yu Changinventor
Life of this patent
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Abstract
A computer system includes a motherboard, a signal amplifier circuit integrated onto the motherboard, and a processor for controlling operations of the computer system. The signal amplifier circuit includes a Class-A preamplifier, a filament heating circuit, and a voltage booster and regulator circuit. The Class-A preamplifier has a vacuum tube so that the computer system can produce professional sound output.
Claims20
A computer system comprising:
- a motherboard;
- and
- an audio circuit integrated on the motherboard, the audio circuit comprising a Codec IC and a vacuum tube amplifier, wherein the Codec IC outputs an audio signal to the vacuum tube amplifier to amplify the audio signal.
A motherboard comprising:
- a Codec IC for processing an audio signal;
- a vacuum tube amplifier circuit for amplifying the audio signal outputted from the Codec IC with a replaceable vacuum tube;
- and
- a vacuum tube power supply circuit for supplying voltage and current to the vacuum tube amplifier circuit.
1 more element
A method for improving audio quality in a motherboard having a Codec IC for processing an audio signal, the method comprising:
- providing a vacuum tube amplifier circuit for amplifying the audio signal with a vacuum tube, wherein the Codec IC outputs the audio signal to the vacuum tube amplifier circuit;
- and
- providing a vacuum tube power supply circuit for supplying voltage and current to the vacuum tube amplifier circuit.
Dependencies are inferred from the claim text.