Patents by Inventor Michael J. Hartmann

Michael J. Hartmann 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: 6947672
    Abstract: A high-speed optical data link includes a system circuit board, a first ASIC coupled to convey electrical information to and from up level data management circuits, and a second ASIC electrically coupled to the first ASIC. A fiber optic module mounted on the system circuit board including a receiver, a transmitter and the second ASIC. The receiver includes a photo-diode positioned to receive optical signals, a trans-impedance amplifier electrically coupled to the photo diode, and a post-amplifier electrically coupled to the trans-impedance amplifier and to the second ASIC. The transmitter includes a laser positioned to convey optical signals to a remote optical receiver and a laser driver electrically coupled to the laser and to the second ASIC.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: September 20, 2005
    Assignee: JDS Uniphase Corporation
    Inventors: Wenbin Jiang, Hsing-Chung Lee, Michael J. Hartmann
  • Publication number: 20040067061
    Abstract: A high-speed optical data link includes a system circuit board, a first ASIC coupled to convey electrical information to and from up level data management circuits, and a second ASIC electrically coupled to the first ASIC. A fiber optic module mounted on the system circuit board including a receiver, a transmitter and the second ASIC. The receiver includes a photo-diode positioned to receive optical signals, a trans-impedance amplifier electrically coupled to the photo diode, and a post-amplifier electrically coupled to the trans-impedance amplifier and to the second ASIC. The transmitter includes a laser positioned to convey optical signals to a remote optical receiver and a laser driver electrically coupled to the laser and to the second ASIC.
    Type: Application
    Filed: October 7, 2003
    Publication date: April 8, 2004
    Inventors: Wenbin Jiang, Hsing-Chung Lee, Michael J. Hartmann
  • Patent number: 6665498
    Abstract: A high-speed optical data link includes a system circuit board, a first ASIC coupled to convey electrical information to and from up level data management circuits, and a second ASIC electrically coupled to the first ASIC. A fiber optic module mounted on the system circuit board including a receiver, a transmitter and the second ASIC. The receiver includes a photo-diode positioned to receive optical signals, a trans-impedance amplifier electrically coupled to the photo diode, and a post-amplifier electrically coupled to the trans-impedance amplifier and to the second ASIC. The transmitter includes a laser positioned to convey optical signals to a remote optical receiver and a laser driver electrically coupled to the laser and to the second ASIC.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: December 16, 2003
    Inventors: Wenbin Jiang, Hsing-Chung Lee, Michael J. Hartmann
  • Patent number: 5359711
    Abstract: A system and method (100,200) which uses a spreadsheet computer program having linked files in which the network architecture and the network element properties are entered and stored by the user. The overall network configuration information is input into a first, (INPUT) file type (102), which includes general parameters such as the battery terminal voltage, cable temperatures, bus (or node) names and bus interconnection information such as cable sizes and number of conductors per node. Cable impedance tables are available in a second, auxiliary (RESIST) file (112). Detailed loading information is entered in a third, (PANEL) file (128), which includes load description, load type (constant power or constant impedance), and load rating data and load status (on or off), which can be sequenced over time. These spreadsheets, or files, cooperate to automatically set up the appropriate YBUS admittance matrix file (120,124) and interactively compute voltages and currents using fourth type (CALC) files (122,126).
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: October 25, 1994
    Assignee: VECTRA Technologies, Inc.
    Inventors: Michael J. Hartmann, Glenn P. McCarthy
  • Patent number: 4699831
    Abstract: There is disclosed a composite body that is electrically insulating, and that is composed of metal particles dispersed in a continuous glassy matrix as a second phase. The metal particles are directionally anisotropic generally paralleling a predetermined plane through the body. This permits good thermal conductivity, while retaining the electrical insulating character of the glass, thus providing improved packaging for electronic components. A method of forming the composite body is also disclosed, as are methods of creating improved electronic packaging utilizing the composite material body.
    Type: Grant
    Filed: June 21, 1985
    Date of Patent: October 13, 1987
    Assignee: Corning Glass Works
    Inventors: Michael J. Hartmann, Kuang-hsin K. Lo, Daniel A. Nolan