Patents by Inventor Christian Menolfi

Christian Menolfi 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: 7447278
    Abstract: The apparatus for transmitting and receiving data according to the invention contains a transmitter (1) for serial data transmission and a receiver (3) for receiving a transmitted data signal (g(t)). The receiver (3) in turn comprises a first sample latch (11) for sampling the received data signal (g(t)) with a first clock (f2) and for generating a first sample value (an). The receiver (3) also comprises a second sample latch (13) for sampling a first shifted received data signal (g(t)+V1) with a second clock (f1) and for generating a second sample value (yn). The receiver (3) further comprises a third sample latch (14) for sampling a second shifted received data signal (g(t)?V1) with the second clock (f1) and for generating a third sample value (zn). Finally the receiver (3) comprises a logic unit (15) for recovering data (dn) out of said first, second and third sample values (an, yn, zn).
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: November 4, 2008
    Assignee: International Business Machines Corporation
    Inventors: Christian Menolfi, Martin Schmatz, Thomas Toifl
  • Publication number: 20070047689
    Abstract: The phase locked loop (PLL) with adjustable phase shift is described. The PLL includes a voltage controlled oscillator which is capable of generating multiple phase shifted output signals, and multiple phase detectors capable of determining the phase differences between the output signals and a reference clock. The PLL further includes a weighting device capable of weighting the phase differences and generating a control signal for the voltage controlled oscillator.
    Type: Application
    Filed: August 31, 2005
    Publication date: March 1, 2007
    Applicant: International Business Machines Corporation
    Inventors: Christian Menolfi, Thomas Toifl
  • Publication number: 20050093570
    Abstract: The present invention provides integrated line drivers useable for driving data signals with high data rates wherein the area consumption of the line driver is minimized and wherein the influence of electrostatic discharge devices and process tolerances are minimized too. An example of an integrated line driver according to the invention comprises a first driver stage followed by a second driver stage, and a feedback unit forming with the second driver stage a control loop. The integrated line drivers are useable for driving data signals with high data rates wherein the area consumption of the line driver is minimized and wherein the influence of ESD devices and process tolerances are minimized. Advantageously, the integrated line driver according to the invention complies with chip design methodologies, where 10 or more routing metal layers are used.
    Type: Application
    Filed: October 29, 2004
    Publication date: May 5, 2005
    Applicant: International Business Machines Corporation
    Inventors: Christian Menolfi, Thomas Toifl, Martin Schmatz
  • Publication number: 20050002475
    Abstract: The apparatus for transmitting and receiving data according to the invention contains a transmitter (1) for serial data transmission and a receiver (3) for receiving a transmitted data signal (g(t)). The receiver (3) in turn comprises a first sample latch (11) for sampling the received data signal (g(t)) with a first clock (f2) and for generating a first sample value (an). The receiver (3) also comprises a second sample latch (13) for sampling a first shifted received data signal (g(t)+V1) with a second clock (f1) and for generating a second sample value (yn). The receiver (3) further comprises a third sample latch (14) for sampling a second shifted received data signal (g(t)?V1) with the second clock (f1) and for generating a third sample value (zn). Finally the receiver (3) comprises a logic unit (15) for recovering data (dn) out of said first, second and third sample values (an, yn, zn).
    Type: Application
    Filed: May 20, 2004
    Publication date: January 6, 2005
    Applicant: International Business Machines Corporation
    Inventors: Christian Menolfi, Martin Schmatz, Thomas Toifl