Patents by Inventor Cleitus Antony

Cleitus Antony 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).

  • Optical transmitter
    Patent number: 7274837
    Abstract: An optical transmitter in which a microstripline is formed by a signal wiring pattern and a GND conductor pattern on a circuit board (including a flexible board), and a signal lead of a light emitting element module is mounted in a signal lead mounting hole connected with said signal wiring pattern so as to be connected with said signal wiring pattern, wherein a pattern adapted to add capacitance between a stem of said light emitting element module and said signal wiring pattern is provided on said signal wiring pattern on said circuit board, and wherein the pattern adapted to add capacitance has a size corresponding to ±50% of a capacitance C?L/Zo2, where Zo is signal line impedance, and L is the signal lead inductance.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: September 25, 2007
    Assignee: Opnext Japan, Inc.
    Inventors: Tomokazu Tanaka, Tadashi Hatano, Hiroo Matsue, Cleitus Antony
  • Optoelectronic transceiver with power voltage supply detection
    Patent number: 7167654
    Abstract: Optical transmission equipment with more than one power supply which can, when turning on the power supplies, set predetermined function of a signal processing circuit after a predetermined time period after the last turn-on of the power supply and can enable the operation of a drive circuit of the light emitting device after an additional predetermined time period.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: January 23, 2007
    Assignee: OpNext Japan, Inc.
    Inventors: Shigeru Tokita, Tomokazu Tanaka, Cleitus Antony, Tarou Tonoduka, Masazumi Noguchi
  • Optical transmission module
    Patent number: 7035302
    Abstract: The present invention provides an optical transmission module having a laser diode that generates laser beams and a differential type current switch provided with a first switch and a second switch in order to supply a modulating current to the laser diode. A terminal of the laser diode and the first switch are connected in series through a first transmission line and a first capacitor, the other terminal of the laser diode and the second switch are connected in series through a second transmission line and a second capacitor. The current driven by the second switch is terminated by a resistor connected to the first switch and the current driven by the first switch is terminated by a resistor connected to the second switch. Thus, the laser diode is modulated bidirectionally.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: April 25, 2006
    Assignee: OpNext Japan, Inc.
    Inventors: Tomokazu Tanaka, Cleitus Antony, Hiroo Matsue, Hideki Murakawa, Tadashi Hatano
  • Optical transmitter
    Publication number: 20050175312
    Abstract: An optical transmitter in which a microstripline is formed by a signal wiring pattern and a GND conductor pattern on a circuit board (including a flexible board), and a signal lead of a light emitting element module is mounted in a signal lead mounting hole connected with said signal wiring pattern so as to be connected with said signal wiring pattern, wherein a pattern adapted to add capacitance between a stem of said light emitting element module and said signal wiring pattern is provided on said signal wiring pattern on said circuit board, and wherein the pattern adapted to add capacitance has a size corresponding to ±50% of a capacitance C?L/Zo2, where Zo is signal line impedance, and L is the signal lead inductance.
    Type: Application
    Filed: December 28, 2004
    Publication date: August 11, 2005
    Inventors: Tomokazu Tanaka, Tadashi Hatano, Hiroo Matsue, Cleitus Antony
  • Optical transmission module
    Publication number: 20040114650
    Abstract: The present invention provides an optical transmission module having a laser diode that generates laser beams and a differential type current switch provided with a first switch and a second switch in order to supply a modulating current to the laser diode. A terminal of the laser diode and the first switch are connected in series through a first transmission line and a first capacitor, the other terminal of the laser diode and the second switch are connected in series through a second transmission line and a second capacitor. The current driven by the second switch is terminated by a resistor connected to the first switch and the current driven by the first switch is terminated by a resistor connected to the second switch. Thus, the laser diode is modulated bidirectionally.
    Type: Application
    Filed: March 6, 2003
    Publication date: June 17, 2004
    Applicant: OpNext Japan, Inc.
    Inventors: Tomokazu Tanaka, Cleitus Antony, Hiroo Matsue, Hideki Murakawa, Tadashi Hatano
  • Optical transmission equipment
    Publication number: 20030228153
    Abstract: Optical transmission equipment with more than one power supply which can, when turning on the power supplies, set predetermined function of a signal processing circuit after a predetermined time period after the last turn-on of the power supply and can enable the operation of a drive circuit of the light emitting device after an additional predetermined time period.
    Type: Application
    Filed: April 17, 2003
    Publication date: December 11, 2003
    Applicant: OpNext Japan, Inc.
    Inventors: Shigeru Tokita, Tomokazu Tanaka, Cleitus Antony, Tarou Tonoduka, Masazumi Noguchi