Patents by Inventor Mark Spellman

Mark Spellman 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).

  • Patent number: 7953183
    Abstract: A system for blending a hybrid radio signal provides reduced volume level transitions during blending from an analog component of the hybrid signal to the digital component by adjusting blend and cross-fade variables, as well as setting a hysteresis mode to prevent undesirable jumping from digital mode back to analog mode sequentially. The system also compensates for digital AM frequency quality issues by adjusting a filter bandwidth when the transceiver blends the AM signal from analog to digital mode.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: May 31, 2011
    Assignee: Harman International Industries, Incorporated
    Inventors: Vasant Shridhar, Mark Spellman, Nicolai Pavlov
  • Patent number: 7944998
    Abstract: A system that blends a hybrid radio signal may provide reduced audio content skipping and may determine an audio correlation between analog and digital signal components in the hybrid radio signal before blending from the analog signal component to the digital signal component. The system may reduce volume level transitions during blending by adjustment of blend and cross-fade variables, as well as setting a hysteresis mode to prevent undesirable sequential jumping from digital mode back to analog mode. The system also may compensate for digital AM frequency quality issues by adjustment of a filter bandwidth when the receiver blends an AM signal from analog to digital mode.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: May 17, 2011
    Assignee: Harman International Industries, Incorporated
    Inventors: Vasant Shridhar, Mark Spellman, Nicolai Pavlov
  • Patent number: 7373123
    Abstract: A radio receiver having multiple AM/FM tuners. A first tuner and a second tuner may be connected with an antenna for generating a first and second composite audio output signal. A dual input digital signal processor may be connected with the first tuner and the second tuner. The first and second composite audio output signals are processed by the dual input digital signal processor to generate a first audio output signal and a second audio output signal. A first audio power amplifier may be connected with the dual input digital signal processor for receiving the first audio output signal and a second audio power amplifier may be connected with the dual input digital signal processor for receiving the second audio output signal.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: May 13, 2008
    Assignee: Harman International Industries, Incorporated
    Inventor: Mark Spellman
  • Publication number: 20070293167
    Abstract: A system that blends a hybrid radio signal may provide reduced audio content skipping and may determine an audio correlation between analog and digital signal components in the hybrid radio signal before blending from the analog signal component to the digital signal component. The system may reduce volume level transitions during blending by adjustment of blend and cross-fade variables, as well as setting a hysteresis mode to prevent undesirable sequential jumping from digital mode back to analog mode. The system also may compensate for digital AM frequency quality issues by adjustment of a filter bandwidth when the receiver blends an AM signal from analog to digital mode.
    Type: Application
    Filed: October 18, 2006
    Publication date: December 20, 2007
    Inventors: Vasant Shridhar, Mark Spellman, Nicolai Pavlov
  • Publication number: 20070291876
    Abstract: A system for blending a hybrid radio signal provides reduced volume level transitions during blending from an analog component of the hybrid signal to the digital component by adjusting blend and cross-fade variables, as well as setting a hysteresis mode to prevent undesirable jumping from digital mode back to analog mode sequentially. The system also compensates for digital AM frequency quality issues by adjusting a filter bandwidth when the transceiver blends the AM signal from analog to digital mode.
    Type: Application
    Filed: June 16, 2006
    Publication date: December 20, 2007
    Inventors: Vasant Shridhar, Mark Spellman, Nicolai Pavlov
  • Publication number: 20050191979
    Abstract: A radio receiver having multiple AM/FM tuners. A first tuner and a second tuner may be connected with an antenna for generating a first and second composite audio output signal. A dual input digital signal processor may be connected with the first tuner and the second tuner. The first and second composite audio output signals are processed by the dual input digital signal processor to generate a first audio output signal and a second audio output signal. A first audio power amplifier may be connected with the dual input digital signal processor for receiving the first audio output signal and a second audio power amplifier may be connected with the dual input digital signal processor for receiving the second audio output signal.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 1, 2005
    Inventor: Mark Spellman