Apple has today been granted a patent for an iPad Smart Cover with more smarts than usual: it incorporates a built-in display, and even a Wacom-style drawing tablet.

The patent illustrates a number of different ways the Smart Cover display could be used, from simply extending the iPad’s own display through text-only displays of things like reminders to a combined display and touchpad. Some of the options show the display acting as a full input device too, allowing both handwritten notes and drawings.

While we of course add our usual disclaimer that Apple patents way more things than it actually makes, two element of this patent have actually made it into production …

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