主题：【原创】侃侃高清晰电视的数字内容保护 -- ragtime

Comcast DVR 可以录。

Will I be able to record and view HDTV programs on my DVR?

Yes, you will be able to record and store HD programs on your DVR. The amount of hours you can store on your DVR varies by model and is dependent on how many standard-definition programs you have already recorded.

TiVo 和DirecTV有合作，也可以录。

DIRECTV has the DIRECTV HD DVR with TiVo service. The DIRECTV HD DVR, licensed and designed by TiVo, features four tuners and can automatically identify whether an incoming signal is satellite or off-air, and then engage the proper tuner for recording. For information about this product, go to the DIRECTV website.

但TiVo还不能录cable的。

In January 2005, TiVo announced plans to create a High-Definition (HDTV) Digital Cable Ready DVR. This DVR will support the CableCARD standard. This box is expected to be released in 2006.

技术高的人，可以把DVR的硬盘拿出，然后就自由了。