Patents by Inventor Frank G. Banach

Frank G. Banach 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).

  • IF circuit with reduced sound attenuation for cable signals
    Patent number: 4766497
    Abstract: A cable-ready television receiver including a tuner switchable between cable and off-air signals has an LC trap tuned to the audio carrier frequency coupled between the tuner and a SAW IF amplifier. The trap includes a varactor diode that, when it exhibits a large capacitance, effectively disables the trap. This occurs when the receiver is used with cable signals. In the event the receiver is used for off-air signals, the voltage applied to the varactor diode causes it to exhibit a much smaller capacitance which effectively enables the trap.
    Type: Grant
    Filed: May 6, 1987
    Date of Patent: August 23, 1988
    Assignee: Zenith Electronics Corporation
    Inventors: Frank G. Banach, James G. Haerle, David S. Tait
  • Television AFC system usable with offset carrier frequencies
    Patent number: 4547805
    Abstract: An AFC circuit for a television receiver capable of unambiguous operation with substantially offset signal frequencies has a response characteristic defined by a positive portion intermediate a pair of substantially equally sized negative portions. The circuit includes a multiplier with an unbalanced coupling between the limiter and the discriminator which has a single adjustable tuned circuit nominally tuned to 45.75 MHz.
    Type: Grant
    Filed: June 20, 1983
    Date of Patent: October 15, 1985
    Assignee: Zenith Electronics Corporation
    Inventors: Roy F. Baker, Frank G. Banach
  • Intermediate frequency circuit with solid state trap
    Patent number: 4484222
    Abstract: A color television receiver includes a surface acoustic wave intermediate frequency amplifier and a gain block feeding a synchronous detector. A non-adjustable solid state (piezonator) sound carrier trap is coupled between the gain block and the synchronous detector by impedance matching capacitors.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: November 20, 1984
    Assignee: Zenith Electronics Corporation
    Inventor: Frank G. Banach