Information management system, method, program and recording medium
First Claim
1. An information management system comprisingone or a plurality of radio frequency (RF) tags and a reader-writer, the RF tags and the reader-writer communicating with each other, whereineach RF tag comprises:
- a sensor that detects a change in an environment around the RF tag;
a storage section that stores identifier information identifying the RF tag, the information being uniquely assigned to the RF tag; and
a first control section that controls the sensor and the storage section andthe reader-writer comprises a sensor value requesting section that requests, with respect to the identifier information, a sensor value detected by the sensor,the reader-writer determining, when environmental information changes, an object according to the sensor value sent from an RF tag including the identifier information to the reader-writer.
1 Assignment
0 Petitions
Accused Products
Abstract
An RF tag includes a sensor for detecting a change in an environment near the RF tag, a storage section for storing identifier information uniquely assigned to each RF tag to identify the RF tag, and a controller for controlling the sensor and the storage section. A reader-writer includes a sensor value requesting section for requesting, with respect to the identifier information, a sensor value detected by the sensor. When the environmental information changes, the reader-writer identifies an object according to the sensor value sent from the RF tag including the identifier information as a response to the reader-writer. It is therefore possible, using an information management system, an information management method, a program, and a recording medium, to recognize an object including a particular tag.
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Citations
19 Claims
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1. An information management system comprising
one or a plurality of radio frequency (RF) tags and a reader-writer, the RF tags and the reader-writer communicating with each other, wherein each RF tag comprises: -
a sensor that detects a change in an environment around the RF tag; a storage section that stores identifier information identifying the RF tag, the information being uniquely assigned to the RF tag; and a first control section that controls the sensor and the storage section and the reader-writer comprises a sensor value requesting section that requests, with respect to the identifier information, a sensor value detected by the sensor, the reader-writer determining, when environmental information changes, an object according to the sensor value sent from an RF tag including the identifier information to the reader-writer. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An information management method for a system comprising one or a plurality of RF tags and a reader-writer, the RF tags and the reader-writer communicating with each other, the method comprising the steps of:
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changing an environment around at least one of the RF tags; detecting a change in the environment by a sensor disposed in an RF tag; requesting by the reader-writer for sensor values detected by sensors in RF tags that are designated with identifier information items; and transmitting, in response to a request from the reader-writer, a sensor value from an RF tag possessing the identifier information item. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A computer program for use with an information system comprising one or a plurality of RF tags and a reader-writer, the RF tags and the reader-writer communicating with each other, the program causing a computer to perform the following:
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detecting a change in an environment around at least one of the RF tags by a sensor disposed in an RF tag; requesting by the reader-writer for a sensor value detected by the sensor in RF tags that are designated with identifier information items; transmitting, in response to a request from the reader-writer, the sensor value from an RF tag; and identifying an object according to an identifier information item and the sensor value. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification