US Patent 8230476 Real-time interactive personal video recorder interface

Interacting with a television program includes beginning playback of the program for perception by a user, analyzing the program to detect a cue within the program, automatically pausing playback of the program when the cue is detected, accepting user input data in response to the cue, resuming playback of the program when the user input data is received, and comparing the user input data to a non-user response. Interactivity provided by the program analysis, pausing playback, accepting user input data, resuming playback, and comparing operations supports execution of at least one of an entertainment application and an educational application at a user's site without requiring modification of the television program by a program provider.