The company that pioneered the concept of skipping past television commercials is now introducing a new kind of TV-based advertising. TiVo has joined forces with Amazon to create an interactive system that will let viewers buy products featured on TV shows — right from their remotes. TiVo Product Purchase will present options on the screen and give users the opportunity to order without interrupting the program. Think of it this way: If you’re watching “Oprah” and her guest is an author, the book he wrote might pop up on-screen.