A method and system are described for displaying a synchronized instance of content on a portable electronic device. In the described embodiments, a selection of streaming content that is being displayed on a fixed display system is received by the portable electronic device. The portable electronic device then determines if the portable electronic device is compatible with the streaming content being received by the fixed display system. If the portable electronic device is compatible with the streaming content being received by the fixed display system, then the portable electronic device requests the synchronized instance of the streaming content and displays it.
Apple describes a scenario where a group of people are watching a movie on an Apple TV, and one person has to leave. The group could either pause the movie and wait, or simple keep watching and let the person who left miss out on programming. Apple's solution is to enable the user who leaves the room temporarily to keep watching on portable devices (iPhone, iPad, Apple Watch).
Apple's patent would also be extremely useful in a large business or education environment. For instance, one user could be presenting on a projector, while other viewers could see the content up-close on portable devices.
If the patent were to become a reality, it would be a welcomed addition to the Apple TV user experience. While not all patents become a reality, it is interesting to see the different ways Apple is working to enhance the Apple TV.
There are other scenarios Apple Describes in its entire patent application, which you can read here (via Patently Apple)