Patents by Inventor Hironobu Fujita

Hironobu Fujita 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).

  • Signal crosstalk inhibition unit and a signal processing apparatus
    Patent number: 6922072
    Abstract: A crosstalk inhibition unit which can inhibit crosstalk without causing an enlargement of a signal processing apparatus. A crosstalk inhibition unit 10 in order to inhibit crosstalk is provided to a signal processing apparatus. The crosstalk inhibition unit 10 is comprised of a contact terminal detection means 8 for detecting whether a contact terminal 7b of a signal cable 7 is inserted to an external terminal 5b of the signal processing apparatus and a first switching element 2 which operates differently depending on whether the contact terminal detection means 8 detects the contact terminal 7b. When the contact terminal detection means 8 does not detect the contact terminal 8, the first switching element 2 becomes conductive, and a signal line 15b is grounded. Thus, the cable 7 is not connected, and a signal line 15b, which is not used for signal processing is grounded. Accordingly, without particularly providing a grounded line, crosstalk between signal lines 15a, 16 and 19 can be inhibited.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: July 26, 2005
    Assignee: Orion Electric Co., Ltd.
    Inventor: Hironobu Fujita
  • Signal crosstalk inhibition unit and a signal processing apparatus
    Publication number: 20040041645
    Abstract: A crosstalk inhibition unit which can inhibit crosstalk without causing an enlargement of a signal processing apparatus.
    Type: Application
    Filed: June 26, 2003
    Publication date: March 4, 2004
    Inventor: Hironobu Fujita