I'm not sure what you're trying to ask or express. The phrase "japanesehdtvxxxx" doesn't seem to be a complete question or statement. It looks like it might be part of a product name or search query, but it's unclear.

If you're asking about Japanese HDTV (High Definition Television), I can provide some general information:

Japanese HDTVs use the same technical standards as other countries in Asia that use the NTSC-J system, such as:

- 1080i or 720p resolution

- 60 Hz refresh rate

Popular Japanese TV brands include Sony, Panasonic, Toshiba, and Sharp.

If you have a specific question about Japanese HDTVs or related topics, please rephrase your question more clearly, and I'll do my best to help you.