A good article from EC2.0:
Google earth provides the high-resolution aerial, high-quality satellite imagery, road, building, streets and everywhere on the planet and people can see those views through computer. DVR is name as Digital Video Recorder. DVR uses a digital way to read and record the multimedia and also combine the function of DVD and STB. DVR is different from others that we used before. We can see the online movies through internet and we can also record it while we are looking. One great function is that we use DVR through internet that means we may have interaction with it and we can use online teaching and online ordering. Another important function for Mobile DVR is it can let the user see the film synchronously as the place you choose, we call that “Time Shiftâ€