Video modulator arrangement

Details Video modulator arrangement Video modulator arrangement

1996-10-15

1999-11-09

Peng, John K.

Television

Format

Including additional information

348424, 348388, 348485, 348574, 348608, 348723, 455295, 455102, 455108, 455110, 332120, 332135, 332152, H04N 704, H04N 540, H03C 338, H03C 500

Patent

active

059824468

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.

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Richard C. Dorf, The Electrical Engineering Handbook, p. 686 (Jan. 1993).
Jacob Millman and Arvin Grabel, Microelectronics, p. 508 (2nd Ed. Jan. 1987).

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