Patents Assigned to Contron Corporation
  • Communication system for telephone
    Patent number: 6807434
    Abstract: A communication system for telephone. The system uses infrared or radio wave as a medium for transmitting voice signal from a telephone to a receiver earphone worn by the user, and then uses a microphone to pick up voice messages from the user. Hence, hands-free telephone conversation is possible.
    Type: Grant
    Filed: March 9, 1999
    Date of Patent: October 19, 2004
    Assignee: Contron Corporation
    Inventor: Bill Yang