dunno wtf a wonderbook is tbh ...
I just read through the patent .
Snippet :
Hence, based on the above features, using the PS3, the EyeToy and the EyePad it is possible for the PS3 to obtain data regarding:
the absolute position of the EyePad with respect to an image captured by the EyeToy;
the relative orientation of the EyePad in six axes from motion sensors;
The status of any button or joystick controls on the EyePad;
The location of one or more touch points on the EyePad touchpad; and
The appearance and 3D shape of an object within the common volume occupying the space immediately above the touchpad.
Given this information, it is then also possible to calculate the position and orientation of the common volume as this has a fixed relationship to the EyeToy, and from this it is also possible to calculate the position and orientation of an object within the common volume.
In use, the EyePad can be treated firstly as an active augmented reality (AR) marker; the combination of the illuminated regions detected by the PS3 using the EyeToy and the telemetry from the EyePad itself provide accurate position and orientation information that is advantageously robust to common environmental problems that affect normal AR markers, such as adverse lighting conditions, partial occlusion or temporary complete occlusion, and small viewing angles.
The detection of the position of the EyePad using its own illumination, together with telemetry from the motion sensors within the EyePad, make the location and orientation of the surface of the Eyepad (e.g. the touch pad area) possible even in complete darkness.