Patents Assigned to West Michigan Telecasters Inc.
  • Patent number: 4007480
    Abstract: Interference in a television receiver due to variations in the frequency of a "920 KHz beat" frequency obtained from the difference in frequency between the 4.5 MHz intercarrier frequency and the 3.58 MHz color subcarrier frequency and detected by the receiver's video detector is reduced by using a color television transmitter having an aural oscillator using a crystal of a smaller size, an "AT" cut and higher frequency followed by frequency division of the oscillator output. The resulting output signal has improved frequency stability and is used as a basis for aural modulation in the television transmitter.
    Type: Grant
    Filed: September 17, 1975
    Date of Patent: February 8, 1977
    Assignee: West Michigan Telecasters Inc.
    Inventor: Dale Wolters