Read apparatus of RF tag and method of controlling read of RF tag
First Claim
1. An RF tag system comprising:
- a first reader/writer unit;
a second reader/writer unit;
a first reader/writer control unit configured to control said first reader/writer unit to read a first data from a first RF tag, and to detect a trouble state of said first reader/writer unit;
a second reader/writer control unit configured to control said second reader/writer unit to read a second data from a second RF tag, and to detect a trouble state of said second reader/writer unit;
a monitoring section configured to issue a selection instruction and to monitor said first reader/writer unit through said first reader/writer control unit, and said second reader/writer unit through said second reader/writer control unit; and
a switching section configured to select one of said first reader/writer control unit and said second reader/writer control unit in response to the selection instruction from said monitoring section.
1 Assignment
0 Petitions
Accused Products
Abstract
An RF tag system includes a first reader/writer unit and a second reader/writer unit. A first reader/writer control unit is configured to control the first reader/writer unit to read a first data from a first RF tag, and to detect a trouble state of the first reader/writer unit. A second reader/writer control unit is configured to control the second reader/writer unit to read a second data from a second RF tag, and to detect a trouble state of the second reader/writer unit. A monitoring section is configured to issue a selection instruction and to monitor the first reader/writer unit through the first reader/writer control unit, and the second reader/writer unit through the second reader/writer control unit. A switching section is configured to select one of the first reader/writer control unit and the second reader/writer control unit in response to the selection instruction from the monitoring section.
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Citations
11 Claims
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1. An RF tag system comprising:
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a first reader/writer unit; a second reader/writer unit; a first reader/writer control unit configured to control said first reader/writer unit to read a first data from a first RF tag, and to detect a trouble state of said first reader/writer unit; a second reader/writer control unit configured to control said second reader/writer unit to read a second data from a second RF tag, and to detect a trouble state of said second reader/writer unit; a monitoring section configured to issue a selection instruction and to monitor said first reader/writer unit through said first reader/writer control unit, and said second reader/writer unit through said second reader/writer control unit; and a switching section configured to select one of said first reader/writer control unit and said second reader/writer control unit in response to the selection instruction from said monitoring section. - View Dependent Claims (2, 3, 4, 5)
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6. A method of controlling a read operation from an RF tag, comprising:
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issuing an instruction to a switching section to use a first RF tag reader/writer control unit; inquiring said first RF tag reader/writer control unit to check whether said first RF tag reader/writer unit is in a trouble state; continuing to use first RF tag reader/writer control unit by said switching section if said first RF tag reader/writer unit is not in the trouble state; issuing an instruction to said switching section to use a second RF tag reader/writer control unit, when it is confirmed that said first RF tag reader/writer unit is not in the trouble state; instructing said first RF tag reader/writer control unit to confirm whether said first RF tag reader/writer unit has been recovered from the trouble state, when it is confirmed that said first RF tag reader/writer unit is not in the trouble state; and when it is confirmed that said first RF tag reader/writer unit has been recovered from the trouble state, issuing an instruction to said switching section to use said first RF tag reader/writer control unit. - View Dependent Claims (7, 8, 9)
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10. A method of controlling a read operation from an RF tag, comprising:
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issuing a selection instruction to a switching section to select a first RF tag reader/writer control unit; reading a data from a reference RF tag by a first RF tag reader/writer unit through said first RF tag reader/writer control unit; continuing to select said first RF tag reader/writer control unit by said switching section if the data can be read out from said reference RF tag; issuing the selection instruction to said switching section to select a second RF tag reader/writer control unit when the data cannot be read out from said reference RF tag; monitoring whether the data can be read out from said reference RF tag by said first RF tag reader/writer unit, through said first RF tag reader/writer control unit in order to detect recovery of said first RF tag reader/writer unit from a trouble; continuing to monitor said first RF tag reader/writer unit when the data cannot be read out from said reference RF tag by said first RF tag reader/writer unit; and issuing the selection instruction to said switching section to select said first RF tag reader/writer control unit when the data can be read out from said reference RF tag. - View Dependent Claims (11)
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Specification