The patent pending** system defines a method by which an object or device can interact with a video screen. The system is able to locate the position of and identify the type of object placed on a display screen. In addition the system can actuate actuators on the object, and read the status of sensors on the object, enabling a full rich interactive experience.
The triangulation component is typically based on an optical signal. Optically based triangulation works for example by breaking up the screen into a checkerboard pattern, e.g. a 256 x 256 checkerboard pattern. Each location on the screen will be represented by an 8-bit sequence of ones or zeros in X and an 8-bit sequence of ones or zeros in Y. (28 = 256). At each square there will be a blink pattern of sixteen ones or zeros which convey the position, adjacent squares will usually have a 1-bit separation, e.g. Manchester encoded, modulated, Grey code. The blink pattern of position encoding information can be visible or IR and be interlaced or simultaneous with the video in time by various encoding methods so as to be imperceptible to the viewer.
The identification component of the IdentiToy system works by passive RFID. Usually RFID Tags contain a unique Identifier which is for example a 128-bit long sequence of ones and zeros, which can encode (2128) = (a very large number) of different Identities. The RFID transponder both energizes and reads out this unique identifier.
The IdentiToy system picks up the 8X+8Y=16 bit position encoding optical signal and splices it to the 128-bit unique toy identifier to yield a 144-bit sequence which encodes both position and type of object. The 144-bit sequence when read by the display device’s RFID interrogator yields both the type and position of an object. Further two such RFID tags, or a single tag coupled to two optical receivers placed within the same object can be used to triangulate the orientation of an object on the surface of the display. Objects that are multifaceted such as dice can have optical sensors on multiple surfaces. Both RFID and the optical receiver are powered by the NFC field and the implementation cost can be reduced to less than one USD, with a size that is 3 mm diam x 10 mm long cylinder.
It can be seen that due to the large number of unique ID’s possible, that the IdentiToy System can be implemented in the OS and always be subliminally interrogating its surroundings and automatically launch the relevant app in the proximity of an IdentiToy based device.
Further the IdentiToy system may provide additional information for actuators on the object, and sensors on the object may relay information to the display screen (eg “Fire” button), making a truly interactive experience possible.
**A full description of the IdentiToy System may be read by searching US patent 9,168,464 and pending patents US 20130217295 A1 and WO/2013/122798.