Composite Video Output Circuit: Get Ideas & Solutions

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Discussion Overview

The discussion revolves around the design and implementation of a circuit to generate a composite video signal, specifically for use with a television display in a microprocessor system. Participants explore various approaches, including the use of integrated circuits (ICs) and the specifics of signal generation from different sources.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants inquire about the specific requirements for generating a composite video signal, including the source of the signal (e.g., R-B-B-syncs).
  • There are mentions of integrated circuits that can generate composite video signals, with references to their use in NTSC test instruments and built-in test patterns.
  • One participant specifies the need for a color composite video signal for a microprocessor system, expressing a preference for using a television display over a computer monitor.
  • Questions are raised about the compatibility of the television with baseband composite video input and the type of connector required.
  • A participant references an application note from Maxim found in a Wikipedia article, suggesting that Maxim may produce an IC suitable for this purpose.

Areas of Agreement / Disagreement

Participants express varying degrees of understanding and interest in the topic, but no consensus is reached on the specific circuit design or components needed to generate the composite video signal.

Contextual Notes

Participants do not clarify certain assumptions regarding the signal source or the specifications of the television display, leaving some aspects of the discussion unresolved.

nDever
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Hey Guys,

Does anyone have a general idea of the circuit needed to generate a composite video signal?
 
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nDever said:
Hey Guys,

Does anyone have a general idea of the circuit needed to generate a composite video signal?

There are chips that generate composit video for you. Is that what you mean? There are some that are used in NTSC test instruments too, with built-in test patterns.

What is your application? Generate composite video from what? R-B-B-syncs?
 
berkeman said:
There are chips that generate composit video for you. Is that what you mean? There are some that are used in NTSC test instruments too, with built-in test patterns.

What is your application? Generate composite video from what? R-B-B-syncs?

Yes. To be more specific, I need a color composite video signal. I would like to use a television for a display for a microprocessor system that I am building. I could use a normal computer monitor but I would like to experiment with a television for a display first.
 
nDever said:
Yes. To be more specific, I need a color composite video signal. I would like to use a television for a display for a microprocessor system that I am building. I could use a normal computer monitor but I would like to experiment with a television for a display first.

And your TV has a baseband composite video input? What is the connector for it?
 

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