WIRELESS IC TAGS, READER/WRITER FOR WIRELESS IC TAGS, AND WIRELESS IC TAG COMMUNICATION SYSTEM EMPLOYING WIRELESS IC TAG AND READER/WRITER FOR WIRELESS IC TAG
First Claim
1. A wireless IC tag communication system comprising a reader/writer for reading and writing data from/to a wireless IC tag via radio communication and a wireless IC tag in which a memory section and an antenna section are mounted on a substrate, wherein said reader/writer outputs radio waves at a first frequency for electrically activating the wireless IC tag and radio waves at a second frequency for writing and reading data, said second frequency is different from the first frequency, to thereby electrically activate the wireless IC tag with the radio waves at a first frequency and execute data writing and reading with the radio waves at a second frequency.
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Accused Products
Abstract
An apparatus and a wireless IC tag communication system capable of securely writing and reading data to/from a wireless IC tag through relatively long distance communication are provided.
The wireless IC tag communication system comprises a reader/writer for reading and writing data from/to a wireless IC tag via radio communication and a wireless IC tag constituted by mounting a memory section and an antenna section on a substrate, said reader/writer is adapted to output radio waves at a first frequency for electrically activating the wireless IC tag and radio waves at a second frequency for writing and reading data, said second frequency is different from said first frequency, to thereby electrically activate the wireless IC tag with said radio waves at a first frequency and execute data writing and reading with said radio waves at a second frequency.
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Citations
20 Claims
- 1. A wireless IC tag communication system comprising a reader/writer for reading and writing data from/to a wireless IC tag via radio communication and a wireless IC tag in which a memory section and an antenna section are mounted on a substrate, wherein said reader/writer outputs radio waves at a first frequency for electrically activating the wireless IC tag and radio waves at a second frequency for writing and reading data, said second frequency is different from the first frequency, to thereby electrically activate the wireless IC tag with the radio waves at a first frequency and execute data writing and reading with the radio waves at a second frequency.
- 6. A reader/writer for writing and reading data to/from a wireless IC tag via radio communication, characterized in that the reader/writer outputs radio waves at a first frequency for electrically activating the wireless IC tag and radio waves at a second frequency for writing and reading data.
- 11. A wireless IC tag characterized in that it receives radio waves at a first frequency for electrically activating the wireless IC tag and radio waves at a second frequency for writing and reading data, said second frequency is different from the first frequency and both of said radio waves are output from the reader/writer, and includes either an electromagnetic induction circuit to receive radio waves via a coil antenna or a reflection circuit to receive radio waves via a plate-shaped antenna, or both of an electromagnetic induction circuit to receive radio waves via said coil antenna and a reflection circuit to receive radio waves via said plate-shaped antenna.
Specification