Cable TV has had a less than stellar reputation in the past, but there are some things that Comcast is doing (and has done) that make cable TV worth looking into again. The most basic thing that Comcast has done was to embrace digital TV technology. This may seem pretty elementary, but it actually has some pretty far reaching implications. For example, using digital TV to transmit TV programming has the benefit of allowing each video stream to be compressed so that it takes up less bandwidth. When each channel takes up less bandwidth, a cable TV company like Comcast can fit more channels over the existing cable infrastructure without having to replace it or add more cables. This compression technology makes Comcast able to provide over three hundred channels, making it at least as good as any satellite TV service.