Patents Assigned to Mitel Semiconductor
  • Video modulator arrangement
    Patent number: 5982446
    Abstract: In a single-chip multistandard video modulator arrangement in which audio signals for transmission with video signals are first modulated onto a subcarrier and then combined with the video signals for modulation onto a VHF or UHF main carrier, the modulated subcarrier signals are passed through a high-pass filter before being combined with the video signals in order to reduce the amplitude of any audio frequency components, and the resulting variations in main carrier amplitude, which tend to produce "sound in vision" effects.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: November 9, 1999
    Assignee: Mitel Semiconductor
    Inventor: Stuart J Millard