System and method for deriving spatial sequence of multiple objects on an interactive surface
OwnerZheng Shi, Zhengzheng Pan +1inventors
InventorsZheng Shi, Zhengzheng Pan, Hanyin Ye
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Abstract
The inductive/capacitive coupling technology and the radio frequency identification devices (RFID) technology are applied to analyze the relative position of multiple RFID tagged objects located within a finite three-dimensional space. The RFID tags of the objects are read by an antenna at a series of resonance frequencies, with an effective reading range of the antenna changing as the resonance frequency changes. The spatial sequence of the objects is derived based on the information of multiple sets of RFID tags in multiple readings. The technology can be applied to a variety of toys and teaching tools, such as the Tower of Hanoi game.
Claims10
A system for deriving spatial sequence of multiple objects on an interactive surface, comprising:
- an interactive surface embedded with an RF module, an antenna, a host, an adjustable matching network, and a channel switch;
- a plurality of objects placed within a finite three-dimensional space on the interactive surface, each object embedded with an RFID tag;
- wherein, 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 wherein, the host instructs the antenna to read RFID tags at the series of resonance frequencies, with an effective reading range of the antenna changing as the resonance frequency changes,
- and wherein, the host receives information of multiple sets of RFID tags in multiple readings, and derives a spatial sequence of the objects placed on the interactive surface.
A method for deriving spatial sequence of multiple objects on an interactive surface, comprising:
- placing a plurality of objects within a finite three-dimensional space on an interactive surface embedded with an RF module, an antenna, a host, an adjustable matching network, and a channel switch, and wherein each object is embedded with an RFID tag;
- instructing, by the host, the channel switch to change the parameters of the components of the adjustable matching network to generate a series of resonance frequencies;
- instructing, by the host, the antenna to read RFID tags at the series of resonance frequencies, with the effective reading range of the antenna changing as the resonance frequency changes;
- receiving, by the host, information of multiple sets of RFID tags in multiple readings;
- deriving, by the host, a spatial sequence of the objects placed on the interactive surface.
Dependencies are inferred from the claim text.