Recording while viewing as a concept can not be patented, nor pause, fast forward, playback..., because such prior arts existed, in a $10 item called a VCR. You can record and view at the same time on a VCR, pause, fast forward and backward. Even if some of the concept was new, an art must not be obvious to a person of ordinary skill at the time to be infringed on.
That is why if you read the appeals court's review of the argument, it went to painstaking details to compare each word in eash construction of the claims, because most of the time, only the specific method used to achieve a concept, may be infringed upon, not a concept itself.
Really? Show me the VCR where I can start recording, then play back from the start 20 minutes later, while still recording the rest of the program. Show me the VCR where I can pause to go answer the phone, while still recording and pick it up from the point where the phone rang. Not part of the patent claims, but show me the VCR that can random access programs and index them by name (that should have been claimed on another patent, and don't bother to tell me about computer storage. It's a different application and thus valid)
And once again: EVERYTHING IS OBVIOUS ONCE IT HAS BEEN DONE.
TIVO totally changed the concept of home recording when it came out.