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Radio-frequency tag communication device, radio-frequency tag communication system

A technology of radio frequency tags and communication equipment, which is applied in the direction of near-field transmission systems, transmission systems, diversity/multi-antenna systems, etc. using transceivers

Inactive Publication Date: 2010-12-08
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the latter prior art described above has the risk of interference occurring between waves transmitted from a plurality of fixed terminals, which has an adverse effect on information read from radio frequency tags

Method used

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  • Radio-frequency tag communication device, radio-frequency tag communication system
  • Radio-frequency tag communication device, radio-frequency tag communication system
  • Radio-frequency tag communication device, radio-frequency tag communication system

Examples

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Embodiment 1

[0130] refer to figure 1 , shows the structure of a radio frequency tag communication system 10 (hereinafter referred to as "communication system 10") constructed according to an embodiment of the second aspect of the present invention. The communication system 10 is a so-called RFID (radio frequency identification system), which includes at least one radio frequency tag communication device (such as figure 1 Two devices in the illustrated embodiment) 12a, 12b (if there is no other description, it will be simply referred to as "radio frequency tag communication device 12" below), and at least one radio frequency tag (such as figure 1 Three tags in the illustrated embodiment) 14a, 14b and 14c (hereinafter referred to simply as "radio frequency tags 14" unless otherwise stated). The radio frequency tag communication device 12 functions as an interrogator of the RFID system, and the radio frequency tag 14 functions as a transponder of the RFID system. When each radio frequency ...

Embodiment 2

[0173] Figure 14 A radio frequency tag detection system 110 constructed according to an embodiment of the third aspect of the present invention is shown. Such as Figure 14 As shown, the radio frequency tag detection system 110 of the present invention is a so-called RFID (radio frequency identification) system, which includes: a plurality of static radio frequency tag communication devices (such as 12 devices) 112a, 112b, 112c, .. ., 1121 (if there is no other description, it will be referred to as "static radio frequency tag communication device 112" for short below); at least one portable radio frequency tag communication device or convenient reader 114 (such as Figure 14 A device in the illustrated embodiment) for detecting at least one radio frequency tag 14 located within the communication area of ​​a plurality of static radio frequency tag communication devices 112; and at least one radio frequency tag 14. The static radio frequency tag communication device 112 and ...

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Abstract

A radio tag communication device for widening a communication range as large as possible with a necessary and sufficient number of sets. The radio tag communication device includes a transmission control unit (40) for controlling the transmission of a transmission signal so that the communication range of a radio tag communication device (12) and the communication range of another radio tag communication device (12) may not overlap. It is, therefore, possible not only to make the distance between the plural radio tag communication devices (12) as long as possible but also to prevent a radio tag (14) properly from receiving the plural transmission signals simultaneously. Thus, it is possible to provide the radio tag communication device (12) for widening the communication range as large aspossible with the necessary and sufficient number of sets.

Description

technical field [0001] The invention relates to the radio frequency tag communication equipment capable of writing and reading information on the radio frequency tag through radio communication, the radio frequency tag communication system including the radio frequency tag communication device, and the improvement of the radio frequency tag detection system. Background technique [0002] There is known an RFID system (Radio Frequency Identification System) in which a radio frequency tag communication device (interrogator) is arranged to facilitate non-contact information reading from a small radio frequency tag (transponder) in which desired information is stored. In this RFID system, a radio frequency tag communication device is able to read stored information from a radio frequency tag through radio communication even if the radio frequency tag is soiled or located where it cannot be seen. Therefore, the RFID system can be expected to be used in various aspects such as com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/59H04B5/02G06K17/00G01V3/00G06K19/08H04B5/48H04B7/06H04B7/08H04B7/10
Inventor 永井拓也清原裕二
Owner BROTHER KOGYO KK
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