Patents by Inventor Tooru Takakura

Tooru Takakura 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).

  • Spread spectrum transmission system
    Patent number: 6597282
    Abstract: An inexpensive spread spectrum transmission system prevents the infiltration of external noise and external leakage of spread spectrum signals by separating electrical power for load devices from electrical power for communication. A plug socket for terminal connection receives a plug for terminal connection of a spread spectrum communication terminal apparatus. The plug for terminal connection is connected to the alternating current power supply line through a blocking filter which blocks electrical noise from entering the spread spectrum terminal apparatus, and prevent spread spectrum signals from passing in the reverse direction. Since the alternating current power supply line for communications carries only light loads, an inexpensive, low-capacity blocking filter is adequate as the blocking filter.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: July 22, 2003
    Assignee: SMK Corporation
    Inventors: Hajime Takata, Tooru Takakura, Masahide Sakamoto
  • Spread spectrum transmission system
    Publication number: 20010050944
    Abstract: An inexpensive spread spectrum transmission system prevents the infiltration of external noise and external leakage of spread spectrum signals by separating electrical power for load devices from electrical power for communication. A plug socket for terminal connection receives a plug for terminal connection of a spread spectrum communication terminal apparatus. The plug for terminal connection is connected to the alternating current power supply line through a blocking filter which blocks electrical noise from entering the spread spectrum terminal apparatus, and prevent spread spectrum signals from passing in the reverse direction. Since the alternating current power supply line for communications carries only light loads, an inexpensive, low-capacity blocking filter is adequate as the blocking filter.
    Type: Application
    Filed: March 22, 2001
    Publication date: December 13, 2001
    Inventors: Hajime Takata, Tooru Takakura, Masahide Sakamoto