Wireless tag communication device and wireless tag communication program
First Claim
Patent Images
1. A wireless tag communication device for communicating with a passive and designated wireless tag through a directional antenna, the wireless tag communication device having an input section and a memory, the device comprising:
- a wireless tag communication section configured to communicate with the passive and designated wireless tag, the wireless tag being designated based on identification information received from the input section;
a calculation section configured to estimate a direction angle for communicating with the wireless tag based on a relation among transmission output power of the wireless tag communication device, an attenuation amount corresponding to an estimated reading distance between the antenna surface and the wireless tag, and sensitivity information for the wireless tag, the estimated reading distance being selected from a first distance received as input from the input section and a second distance previously stored in the memory;
a display section configured to display the estimated direction angle; and
a communication control section configured to detect the quality of a communication state of the wireless tag communication section and the wireless tag and control the wireless tag communication section to transmit a signal at the estimated direction angle to the wireless tag based on the detected quality of the communication state.
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Abstract
A wireless tag communication device for communicating with a wireless tag through a directional antenna includes a wireless tag communication section configured to communicate with the wireless tag, a calculation section configured to estimate a direction range for communicating with the wireless tag based on transmission output power of the wireless tag communication device and an estimated reading distance to the wireless tag, and a display section configured to display the estimated direction range.
4 Citations
21 Claims
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1. A wireless tag communication device for communicating with a passive and designated wireless tag through a directional antenna, the wireless tag communication device having an input section and a memory, the device comprising:
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a wireless tag communication section configured to communicate with the passive and designated wireless tag, the wireless tag being designated based on identification information received from the input section; a calculation section configured to estimate a direction angle for communicating with the wireless tag based on a relation among transmission output power of the wireless tag communication device, an attenuation amount corresponding to an estimated reading distance between the antenna surface and the wireless tag, and sensitivity information for the wireless tag, the estimated reading distance being selected from a first distance received as input from the input section and a second distance previously stored in the memory; a display section configured to display the estimated direction angle; and a communication control section configured to detect the quality of a communication state of the wireless tag communication section and the wireless tag and control the wireless tag communication section to transmit a signal at the estimated direction angle to the wireless tag based on the detected quality of the communication state. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless tag communication device for communicating with a passive and designated wireless tag through a directional antenna, the device comprising:
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a wireless tag communication section configured to communicate with the passive and designated wireless tag, the wireless tag being designated based on identification information for the wireless tag; a communication condition detection section configured to detect a communication condition between the wireless tag communication section and the wireless tag; a calculation section configured to generate an image that depicts a position of the wireless tag in relation to an estimate of a direction angle for communicating with the wireless tag, such that the depicted position of the wireless tag changes according a value representing the communication condition, the calculation section determining the estimate of the direction angle based on a relation among transmission output power of the wireless tag communication device, an attenuation amount corresponding to an estimated reading distance between the antenna surface and the wireless tag, and sensitivity information for the wireless tag; a display section configured to display the image; and a communication control section configured to control the wireless tag communication section to transmit a signal at the estimated direction angle to the wireless tag based on the detected communication condition by the communication condition detection section. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A wireless tag communication program stored in a non-transitory computer readable medium and executable in a device to cause the device to communicate with a passive and designated wireless tag through a directional antenna and carry out the steps of:
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designating the wireless tag based on identification information received from an input section of the device; estimating a direction angle for communicating with the wireless tag based on a relation among transmission output power of the device, an attenuation amount corresponding to an estimated reading distance between the antenna surface and the wireless tag, and sensitivity information for the wireless tag, the estimated reading distance being selected from a first distance received from then input section of the device and a second distance previously stored in a memory of the device; displaying the estimated direction angle on a display; detecting the quality of a communication state of the wireless tag communication section and the wireless tag and transmit a signal at the estimated direction angle to the wireless tag based on the detected quality of the communication state. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method of communicating with a passive and designated wireless tag through a directional antenna, comprising:
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receiving identification information to designate the wireless tag; estimating a direction angle for communicating with the wireless tag based on a relation among transmission output power, an attenuation amount corresponding to an estimated reading distance between a surface of the antenna and the wireless tag, and sensitivity information for the wireless tag; displaying the estimated direction angle; detecting quality of communication with the wireless tag; and controlling transmission of a signal at the estimated direction angle to the wireless tag based on the detected quality of the communication with the wireless tag.
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Specification