×

Audio signal amplifier for karaoke player

  • US 8,335,327 B2
  • Filed: 04/18/2008
  • Issued: 12/18/2012
  • Est. Priority Date: 04/18/2008
  • Status: Active Grant
First Claim
Patent Images

1. An apparatus, comprising:

  • a DVD/CD reader port for coupling to a DVD/CD reader;

    a microphone input to receive audio signals from an external microphone;

    an MPEG decoder coupled to the DVD/CD reader port and the microphone input, the MPEG decoder having first and second output terminals;

    a processor coupled to the MPEG decoder, the processor to control the MPEG decoder; and

    a configurable amplifier coupled to the first and second output terminals of the MPEG decoder, wherein a first audio signal originating from the first output terminal is selectively amplified by the configurable amplifier circuit in accordance with a second signal originating from the second output terminal, wherein;

    when the external microphone is electrically coupled to the apparatus via the microphone input, the second signal has a first state indicating the presence of the external microphone and the first audio signal comprises a combination of information from the DVD/CD reader and a signal from the external microphone; and

    when the external microphone is not electrically coupled to the apparatus via the microphone input, the second signal has a second state indicating the absence of the external microphone and the first audio signal comprises information from the DVD/CD reader.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×