System and method for deriving spatial sequence of multiple objects on an interactive surface

Abstract

The present invention provides a system and accompanying method for deriving spatial sequence of multiple objects on an interactive surface. The system includes an interactive surface and multiple physical objects. Each object is placed within a finite three-dimensional space on the interactive surface, and embedded with an RFID tag. The interactive surface further includes an RF module, an antenna, a host, an adjustable matching network, a channel switch, and an output module. The host instructs the channel switch to change the parameters of the components of the adjustable matching network to generate a series of resonance frequencies. And the host instructs the antenna to read the RFID tags at the series of resonance frequencies, with an effective reading range of the antenna changing as the resonance frequency changes. The host receives information of multiple sets of RFID tags in multiple readings, derives a spatial sequence of the objects placed on the interactive surface, and provides the output signal or action through the output module. The invention could be applied to the Tower of Hanoi game.

Dependencies are inferred from the claim text.