Patents by Inventor Naofumi Morohashi

Naofumi Morohashi 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 TRANSCEIVER MODULE AND METHOD OF CONTROLLING OPTICAL TRANSCEIVER MODULE
    Publication number: 20090317086
    Abstract: An optical transceiver module for transmitting and receiving an optical signal with a plurality of channels includes timing generator for sequentially generating timing instructions defining different start-up time points, and powering controller for effecting a control such that power supply to at least a portion of circuit components associated with the respective channels is sequentially started in accordance with the timing instructions generated by the timing generator. Current to be instantaneously necessitated when a power switch is turned on or when a power restoration is made from power saving operation modes can be suppressed.
    Type: Application
    Filed: April 25, 2008
    Publication date: December 24, 2009
    Inventors: Naofumi Morohashi, Futoshi Endou, Shigeru Tokita, Hiroo Matsue
  • Optical device module, optical transmitter and receiver, and optical receptacle
    Patent number: 7322752
    Abstract: An optical device module includes a stub ferrule for guiding a laser light to an optical fiber to be connected, a sleeve for holding an optical-connector ferrule of the optical fiber to be connected and the stub ferrule, a holder for fixing the stub ferrule and the sleeve, and an adapter for connecting the holder and an optical module, in which the sleeve is formed by a nonmetallic material, reducing the structure of metal portion and restraining the antenna effect when electromagnetic noise enters.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: January 29, 2008
    Assignee: Opnext Japan, Inc.
    Inventors: Futoshi Endou, Naofumi Morohashi, Atsushi Miura
  • Pluggable module and cage
    Publication number: 20060270275
    Abstract: Nonconductive material sheets are mounted on both side faces of a case of an optical transceiver module. Alternatively, both the side faces of the case of the optical transceiver module are finished to have surface roughness of 2.4 a or less. Alternatively, at least sliding surfaces of a pair of flat springs for grasping a pluggable module in a cage is formed of a nonconductive material.
    Type: Application
    Filed: May 16, 2006
    Publication date: November 30, 2006
    Inventors: Naofumi Morohashi, Satoshi Motohiro, Futoshi Endoh
  • Optical device module, optical transmitter and receiver, and optical receptacle
    Publication number: 20060078261
    Abstract: An optical device module includes a stub ferrule for guiding a laser light to an optical fiber to be connected, a sleeve for holding an optical-connector ferrule of the optical fiber to be connected and the stub ferrule, a holder for fixing the stub ferrule and the sleeve, and an adapter for connecting the holder and an optical module, in which the sleeve is formed by a nonmetallic material, reducing the structure of metal portion and restraining the antenna effect when electromagnetic noise enters.
    Type: Application
    Filed: September 8, 2005
    Publication date: April 13, 2006
    Inventors: Futoshi Endou, Naofumi Morohashi, Atsushi Miura