HDTV (high-definition television) has much improved picture quality over the old standard definition TVs.

But experiencing this better picture quality is NOT just a matter of buying a HD television. You must have ALL three of the following:

• A HDTV set
• Access to HD channels from an antenna or your cable provider*
• A DVR or cable box that can receive those channels – We recommend the TiVo HD DVR, which can get free antenna HD channels using your antenna, or HD channels from your cable provider**

To find out why TiVo is the best HD DVR, see how TiVo compares with cable and satellite DVRs.

For more information about how HDTV actually works, here are a few helpful sources on the web:
HowStuffWorks
CNET
Wikipedia.org

* Satellite providers also deliver HD channels, but current TiVo DVRs are not compatible satellite HD.

** HD cable channels require a CableCARD™ decoder, which you can request from your cable provider.