Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of media-connection technologist Silicon Image (Nasdaq: SIMG) went out of focus today, falling as much as 12.2% on fairly heavy trading volume.

So what: The company doesn't have any news of its own today, but that doesn't make this drop meaningless: Apple (Nasdaq: AAPL) and Intel (Nasdaq: INTC) just demonstrated their Thunderbolt high-definition display technology at a trade show.

Now what: A new industry standard for high-quality media connectors is indeed a scary proposition for Silicon Image, which lives and dies by the HDMI standard. With heavyweights like Intel and Apple pulling the strings, Thunderbolt might even stand a chance in the open market. This is a long-term concern, since it'd take awhile for even the best marking teams in the world to replace or marginalize the deeply entrenched HDMI standard.

Interested in more info on Silicon Image? Add it to your watchlist.

Fool contributor Anders Bylund holds no position in any of the companies discussed here. Intel is a Motley Fool Inside Value selection. Apple is a Motley Fool Stock Advisor recommendation. The Fool has written puts on Apple. The Fool owns shares of and has bought calls on Intel. Motley Fool Options has recommended a bull call spread position on Apple and a diagonal call position on Intel. The Fool owns shares of Apple. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool is investors writing for investors.