Reader for RFID tag for near-field wireless communication and near-field wireless communication system
AssigneesSony Corporation, Sony Interactive Entertainment Inc.
InventorsMasakazu Tanikawa, Katsuyoshi Onishi
Life of this patent
Estimating the term…
Abstract
In a reader for a radio frequency identification (RFID) tag for near-field wireless communication, an antenna selection switch includes a plurality of antennae arranged with an extent within a predetermined range for transmitting and receiving data to and from an RFID tag, and selects one antenna to be used for transmission and reception of data from among the plurality of antennae. A detection part acquires, when a carrier wave transmitted from the RFID tag is received by any of the plurality of antennae, information indicative of an antenna selected by the antenna selection switch under the control of an antenna changeover controlling part.
Claims14
A reader for an RFID (Radio Frequency IDentification) tag for near-field wireless communication, comprising:
- a transmission and reception unit which transmits a carrier wave to the RFID tag and receives a carrier wave transmitted from the RFID tag;
- the transmission and reception unit including
- a modulation part which generates a carrier wave modulated with data to be transmitted to the RFID tag, and
- an antenna selection switch in which a plurality of antennae transmitting and receiving data to and from the RFID tag arranged with an extent within a predetermined range and which selects one antenna to be used for transmission and reception of data from among the plurality of antennae;
- the reader for an RFID tag further including
- an antenna changeover controlling part which changes over the antenna to be selected by the antenna selection switch;
- a detection part which acquires, when the carrier wave transmitted from the RFID tag is received by any of the plurality of antennae, information indicative of the antenna selected by the antenna selection switch under a control of the antenna changeover controlling part;
- a top plate receiving the RFID tag placed thereon;
- and
- a touch sensor detecting presence or absence of a touch with the top plate.
A near-field wireless communication system, comprising:
- one or more RFID tags for near-field wireless communication;
- a reader for an RFID tag for near-field wireless communication;
- software controlling the reader for an RFID tag;
- and
- an information processing apparatus which couples for communication with the reader for an RFID tag and executes the software;
- wherein the reader for an RFID tag includes
- a transmission and reception unit which transmits a carrier wave to the RFID tag or tags and receives a carrier wave transmitted from the RFID tag or tags;
- the transmission and reception unit includes
- a modulation part which generates a carrier wave modulated with data to be transmitted to the RFID tag or tags,
- an antenna selection switch in which a plurality of antennae transmitting and receiving data to and from the one or more RFID tags arranged with an extent within a predetermined range and which selects one antenna to be used for transmission and reception of data from among the plurality of antennae;
- the reader for an RFID tag further includes
- an antenna changeover controlling part which changes over an antenna to be selected by the antenna selection switch;
- and
- a tag detection part which acquires, when the carrier wave transmitted from any of the one or more RFID tags is received by one of the plurality of antennae, information indicative of the antenna selected by the antenna selection switch under a control of the antenna changeover controlling part, and then detects existing positions of the RFID tags which transmit the carrier wave;
- a top plate receiving the RFID tag placed thereon;
- a touch sensor detecting presence or absence of a touch with the top plate;
- and
- the software controls the antenna changeover controlling part to cause the information processing apparatus for setting a changeover pattern defining timings of changeover of the antenna to be selected by the antenna selection switch.
Dependencies are inferred from the claim text.