Patents Assigned to Telegram Communications Corp.
  • Wide bandwidth video amplifier
    Patent number: 4293875
    Abstract: The video amplifier circuit comprises a complementary symmetrical arrangement of a first and second solid state transistor element with the video input source coupled through a level shifting circuit to the first element and through a DC level shifting circuit to the second element and with means provided for operating each element in a clamped mode approaching saturation. Additional circuit modifications include means for modulating the video input signal with a high frequency signal to cause continuous gray scale variation.
    Type: Grant
    Filed: January 3, 1980
    Date of Patent: October 6, 1981
    Assignee: Telegram Communications Corp.
    Inventor: Bernard R. Katz