Patents by Inventor Hideharu Omori

Hideharu Omori 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: 5228035
    Abstract: A synchronizing system in a digital communication line comprises a plurality of local switches for storing at least one digital line and monitoring a first piece of busy information when a clock source is already present, the local switches, if a first new clock source occurs while the first busy information is indicating no busy state, being capable of transmitting a master right request to turn the busy information to the busy state and to specify the first new clock source as a master clock and, on receiving a master right specification with respect to the master right request, being capable of outputting the first new clock source as the master clock; and a master switch connected to the plurality local switches in a star manner, by a link transmission line for transmitting control information including the master clock, master right request and master right specification, for monitoring a second piece of busy information indicating a busy state, the master switch, if a second new clock source occurs whil
    Type: Grant
    Filed: October 29, 1991
    Date of Patent: July 13, 1993
    Assignee: Iwatsu Electric Co., Ltd.
    Inventors: Akira Hirato, Yuji Kondo, Hideharu Omori, Naoyuki Yamaguchi, Koichi Ichimura, Yoshihiro Kawata
  • Patent number: 5025441
    Abstract: A key telephone system for use in PCM telecommunications includes an office line communication units, an extension interface unit, a receiving unit, an extension communication unit, and an information transmitting and receiving unit.
    Type: Grant
    Filed: December 28, 1988
    Date of Patent: June 18, 1991
    Assignee: Iwatsu Electric Company, Ltd.
    Inventors: Masaharu Kamigaki, Hironobu Oshikata, Yoshihiro Kawata, Nobuyasu Shiga, Hideharu Omori, Masayuki Kawashima, Toshimichi Shimatani
  • Patent number: 4815099
    Abstract: There is disclosed a data circuit-terminating equipment (DCE) which connects an asynchronous data terminal equipment (DTE) with a PCM trnsmission line having various speeds. Further the DCE can satisfy recomendations of the V25 bis of CCITT. The DCE includes a PLL obtaining a clock from the line, a timing generator generating timings for circuits, a mapping circuit mapping to make data from the DTE match into the line speed, a sending register converting transmission speed of the mapping circuit output to send to the line at the instructed period, a receiving register receiving data from the line to deliver data with the required speed during the required period for the DTE, and a demapping circuit receiving the receiving register output to demap and send to the DTE.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: March 21, 1989
    Assignee: Iwatsu Electric Co., Ltd.
    Inventors: Toshimichi Shimatani, Yoshihiro Kawata, Masayuki Kawashima, Hideharu Omori
  • Patent number: 4726013
    Abstract: A time division multiplex telecommunications system is disclosed as adapted for a key telephone system providing for intercommunication between any two of a series of key telephone sets in cascade connection to a switching control circuit, possibly with facilities for association with the nationwide telephone network. The control circuit receives from the tandem connection of telephones an outgoing data signal of time division multiplex frame format having a succession of frames each comprising a frame sync signal and channels of outgoing data from the respective telephones. Rearranging the channels of data in the received outgoing data signal, the control circuits delivers back to the successive telephones an incoming data signal of similar frame format. Each telephone is equipped for rearrangement of the frame sync signal and data channels of the incoming and outgoing data signals, with the result that all the telephones can be of the same circuit configuration.
    Type: Grant
    Filed: January 17, 1986
    Date of Patent: February 16, 1988
    Assignee: Iwatsu Electric Co., Ltd.
    Inventors: Masayuki Kawashima, Hideharu Omori