Patents by Inventor Quoc Hai Tran

Quoc Hai Tran 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: 7321621
    Abstract: The invention describes a number of differential, balanced high-speed circuits that permit the design of a receiver with Electronic Dispersion Compensation (EDC) on a single semiconductor substrate, including the functions of an analog Fast Forward Equalizer (FFE), a Clock and Data Recovery, a Decision Feedback Equalizer (DFE), enhanced by additional circuits that permit control of the slicing level to compensate for pulse distortion, and control of the phase offset to set the optimal eye sampling time when a distorted signal is received. To provide the utmost speed of operation, all circuits including the phase locked loop, operate as differential circuits which include a number of improvements in the design of the charge pump, the decision feedback equalizer, the slicing level control, and others.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: January 22, 2008
    Assignee: Applied Micro Circuits Corporation
    Inventors: Petre Popescu, Douglas Stuart McPherson, Stefan Szilagyi, Quoc Hai Tran, Kathryn Howlett
  • Patent number: 7190742
    Abstract: The invention describes a number of differential, balanced high-speed circuits that permit the design of a receiver with Electronic Dispersion Compensation (EDC) on a single semiconductor substrate, including the functions of an analog Fast Forward Equalizer (FFE), a Clock and Data Recovery, a Decision Feedback Equalizer (DFE), enhanced by additional circuits that permit control of the slicing level to compensate for pulse distortion, and control of the phase offset to set the optimal eye sampling time when a distorted signal is received. To provide the utmost speed of operation, all circuits including the phase locked loop, operate as differential circuits which include a number of improvements in the design of the charge pump, the decision feedback equalizer, the slicing level control, and others.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: March 13, 2007
    Assignee: Applied Micro Circuits Corporation
    Inventors: Petre Popescu, Diana Gradinaru, Kathryn Howlett, Quoc Hai Tran
  • Patent number: 7184478
    Abstract: The invention describes a number of differential, balanced high-speed circuits that permit the design of a receiver with Electronic Dispersion Compensation (EDC) on a single semiconductor substrate, including the functions of an analog Fast Forward Equalizer (FFE), a Clock and Data Recovery, a Decision Feedback Equalizer (DFE), enhanced by additional circuits that permit control of the slicing level to compensate for pulse distortion, and control of the phase offset to set the optimal eye sampling time when a distorted signal is received. To provide the high speed of operation, all circuits including the phase locked loop, operate as differential circuits, which include a number of improvements in the design of the charge pump, the decision feedback equalizer, the slicing level control, and others.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: February 27, 2007
    Assignee: Applied Micro Circuits Corporation
    Inventors: Petre Popescu, Quoc Hai Tran, Douglas Stuart McPherson
  • Publication number: 20040258145
    Abstract: The invention describes a number of differential, balanced high-speed circuits that permit the design of a receiver with Electronic Dispersion Compensation (EDC) on a single semiconductor substrate, including the functions of an analog Fast Forward Equalizer (FFE), a Clock and Data Recovery, a Decision Feedback Equalizer (DFE), enhanced by additional circuits that permit control of the slicing level to compensate for pulse distortion, and control of the phase offset to set the optimal eye sampling time when a distorted signal is received. To provide the utmost speed of operation, all circuits including the phase locked loop, operate as differential circuits which include a number of improvements in the design of the charge pump, the decision feedback equalizer, the slicing level control, and others.
    Type: Application
    Filed: August 12, 2003
    Publication date: December 23, 2004
    Inventors: Petre Popescu, Douglas Stuart McPherson, Stefan Szilagyi, Quoc Hai Tran, Kathryn Howlett
  • Publication number: 20040258181
    Abstract: The invention describes a number of differential, balanced high-speed circuits that permit the design of a receiver with Electronic Dispersion Compensation (EDC) on a single semiconductor substrate, including the functions of an analog Fast Forward Equalizer (FFE), a Clock and Data Recovery, a Decision Feedback Equalizer (DFE), enhanced by additional circuits that permit control of the slicing level to compensate for pulse distortion, and control of the phase offset to set the optimal eye sampling time when a distorted signal is received. To provide the utmost speed of operation, all circuits including the phase locked loop, operate as differential circuits which include a number of improvements in the design of the charge pump, the decision feedback equalizer, the slicing level control, and others.
    Type: Application
    Filed: August 12, 2003
    Publication date: December 23, 2004
    Inventors: Petre Popescu, Diana Gradinaru, Kathryn Howlett, Quoc Hai Tran
  • Publication number: 20040258183
    Abstract: The invention describes a number of differential, balanced high-speed circuits that permit the design of a receiver with Electronic Dispersion Compensation (EDC) on a single semiconductor substrate, including the functions of an analog Fast Forward Equalizer (FFE), a Clock and Data Recovery, a Decision Feedback Equalizer (DFE), enhanced by additional circuits that permit control of the slicing level to compensate for pulse distortion, and control of the phase offset to set the optimal eye sampling time when a distorted signal is received. To provide the high speed of operation, all circuits including the phase locked loop, operate as differential circuits, which include a number of improvements in the design of the charge pump, the decision feedback equalizer, the slicing level control, and others.
    Type: Application
    Filed: August 12, 2003
    Publication date: December 23, 2004
    Inventors: Petre Popescu, Quoc Hai Tran, Douglas Stuart McPherson