Sony has filed a patent application for a new ebook reader device that seeks to double up as a laptop as well. The device is expected to come with a two screen display which can held like a regular book to read content.
The application further notes that the eReader shall be fitted with an accelerometer so that users may change the device orientation so that the device may now resemble a laptop. The user can now choose to continue using the device as an eReader or use the necessary toggling controls to turn the lower screen into a touchscreen based QWERTY keyboard laptop.
Besides this, there are several enhancements described in the application like keyboard language customizations, use of GPS to access location-specific content,etc. It is an interesting technology which you may read more about here.