Patents by Inventor Edmund Meitner

Edmund Meitner 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).

  • Retrofitable CD player system
    Patent number: 5790481
    Abstract: Installing a high quality audio source, such as a CD player, in an automobil requires often installation of a radio/tuner of sufficient quality to provide an audio signal corresponding to the quality of the audio source. In leased automobils this presents a problem because of warrenty and return conditions. The problem is solved by using a separate amplifier connected into the wiring between factory installed radio/tuner and loudspeakers and sensing the setting of the radio/tuner control knobs by placing a defined modulated carrier on the antenna input of the radio/tuner. The output of the radio/tuner then provides a signal reflecting the setting of the control knobs. This signal is used to control the amplifier.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: August 4, 1998
    Inventor: Edmund Meitner
  • Very low jitter clock recovery from serial audio data
    Patent number: 5598423
    Abstract: Synchronization with a signal derived from code violations in periodic data block preambles, and derived using analog circuits provides for a very low jitter clock. The method involves detecting the amplitude of an analog signal derived from the preamble. The amplitude exceeds a preset value whenever a code violation is detected. The frequency of the preamble may be a fraction or a multiple of the synchronized clock.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: January 28, 1997
    Inventor: Edmund Meitner
  • Adaptive digital audio interpolation system
    Patent number: 5499315
    Abstract: A transition signal detector switches the processing of a digital audio signal between a frequency optimized filter for normal operation and a transition optimized filter when a transition condition is detected.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: March 12, 1996
    Inventors: Edmund Meitner, Robert P. Gendron
  • Very low jitter clock recovery from serial audio data
    Patent number: 5404362
    Abstract: Synchronization with a signal derived from code violations in periodic data block preambles, and derived using analog circuits provides for a very low jitter clock. The method involves detecting the amplitude of an analog signal derived from the preamble. The amplitude exceeds a preset value whenever a code violation occur is detected. The frequency of the preamble may be a fraction or a multiple of the synchronized clock.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: April 4, 1995
    Inventor: Edmund Meitner
  • Adaptive digital audio interpolation system
    Patent number: 5388221
    Abstract: A transition signal detector switches the processing of a digital audio signal between a frequency optimized filter for normal operation and a transition optimized filter when a transition condition is detected.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: February 7, 1995
    Inventors: Edmund Meitner, Robert P. Gendron
  • Reproduction equipment for digital audio
    Patent number: 5329556
    Abstract: Re-synchronization of digital audio signals before converting the signals from digital to analog form using a stable clock reduces uncertainties in the timing of the audio signal.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: July 12, 1994
    Inventors: Edmund Meitner, Howard Burman