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US5079525A - Audio-video modulator system on ic chip ...
https://patents.google.com/patent/US5079525A/en
An RF modulator comprising an FM modulator supplied with an audio signal, and AM modulator supplied with the FM modulator output and a video signal, an oscillator for generating a sound subcarrier signal, and an oscillator for generating a main carrier signal. Each of the oscillators consists of a VCO with a PLL circuit, and the entire components are composed of a single IC …
MC44CC373 CMOS Audio/Video RF Modulators
https://www.nxp.com/docs/en/data-sheet/MC44CC373.pdf
CMOS Audio/Video RF Modulators The MC44CC373 / MC44CC374 CMOS family of RF modulators is the latest generation of the legacy MC44BS373/4 family of devices. The MC44CC373/MC44CC374 RF modulators are designed for use in VCRs, set-top boxes, and similar devices.They support multiple standards, and can be
Audio-video modulator system on IC chip - Sony Corporation
https://www.freepatentsonline.com/5079525.html
Audio-video modulator system on IC chip . United States Patent 5079525 . Abstract: An RF modulator comprising an FM modulator supplied with an audio signal, and AM modulator supplied with the FM modulator output and a video signal, an oscillator for generating a sound subcarrier signal, and an oscillator for generating a main carrier signal ...
Try signal conditioning the audio/video for an RF modulator
https://www.eetimes.com/try-signal-conditioning-the-audio-video-for-an-rf-modulator/
The resulting low-cost circuitry can also provide rear-panel outputs for most audio/video (A/V) appliances. Requirements and problems. For driving RF modulators in NTSC and PAL systems, the allowable video group-delay variation and required audio pre-emphasis are clearly specified by ITU Recommendation BT.470-6.
What does rf modulator do? Do I need it? Where to buy
https://thorbroadcast.com/t/rf-modulator
RF modulators are used to alter signals from devices such as VCRs, DVD players, media players, and game consoles to a format that can be handled by a device designed to receive a modulated RF input, for example, radio and television receivers. The RF modulator converts the video (and/or audio) output of a DVD player (or camcorder or video game) into a frequency which can be …
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