Got this from TiVo's website.
DIRECTV Brings Advanced HD DVR to Market in Early 2004
The highly anticipated new DIRECTV HD DVR, a high definition digital video recorder, was among the products TiVo showcased at CES. 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. The new DIRECTV HD DVR will be available in the first quarter of 2004.
The popular DIRECTV DVR with TiVo will continue to be a best seller for the leading satellite television service provider. Hughes, Philips, RCA and Samsung will all offer the integrated DIRECTV tuner with TiVo at retail outlets nationally in 2004.