Patents by Inventor Greg A. Hupp

Greg A. Hupp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Automatic power foldback for audio applications
    Patent number: 7668321
    Abstract: A power foldback circuit to automatically control the power of an audio amplifier by using the volume inputs to a pre-amp source which drives the audio amplifier. In an embodiment, a Universal Serial Bus (USB) on a personal computer is used to drive the audio speakers. In this circuit an audio digital to analog converter (DAC) with a USB interface receives a digitally encoded audio signal from a personal computer (PC). The USB DAC outputs an analog audio signal to a audio amplifier circuit. A supervisory circuit monitors the power used by the audio amplifier and through a volume control circuit lowers the volume control into the USB DAC to prevent the entire circuit from drawing more than the allowed power supplied by the USB connection to the PC.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: February 23, 2010
    Assignee: Texas Instruments Incorporated
    Inventor: Greg A. Hupp
  • Automatic power foldback for audio applications
    Publication number: 20040258257
    Abstract: A power foldback circuit to automatically control the power of an audio amplifier by using the volume inputs to a pre-amp source which drives the audio amplifier. In an embodiment, a Universal Serial Bus (USB) on a personal computer is used to drive the audio speakers. In this circuit an audio digital to analog converter (DAC) with a USB interface receives a digitally encoded audio signal from a personal computer (PC). The USB DAC outputs an analog audio signal to a audio amplifier circuit. A supervisory circuit monitors the power used by the audio amplifier and through a volume control circuit lowers the volume control into the USB DAC to prevent the entire circuit from drawing more than the allowed power supplied by the USB connection to the PC.
    Type: Application
    Filed: September 26, 2003
    Publication date: December 23, 2004
    Inventor: Greg A. Hupp