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VBI teletext insertion for NTSC

Question asked by peter_k on Jul 26, 2018
Latest reply on Jul 30, 2018 by PoornimaSubramani

The ADV7340 and ADV7390 series encoders both support the insertion of teletext data using a special protocol. According to the datasheets, this can be done when operating in PAL mode. For my application I wish to use VBI as a one-way data channel and teletext would be ideal for this purpose, but I need to support NTSC as well as PAL.

Is there any way to make use of the teletext interface in NTSC mode?