SYSTEM AND METHOD FOR ALLOWING MULTIPLE RFID READER DEVICES TO READ RFID TAGS WITHOUT COLLISION
First Claim
1. A method of operating an RFID (Radio Frequency Identification) system including multiple RFID readers, comprising:
- grouping RFID readers spaced apart by more than a spacing distance capable of avoiding collision between RFID readers into a single group to determine at least one group;
classifying RFID readers included in each group into at least one sub-group based on a read time of each RFID reader; and
driving the RFID readers such that RFID readers belonging to at least two different sub-groups that do not collide with each other simultaneously operate.
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Accused Products
Abstract
Provided are an RFID operating system and an RFID system operating method for allowing multiple RFID readers to read tags without collision. The RFID system operating method includes the steps of grouping RFID readers spaced apart by more than a spacing distance capable of avoiding collision between RFID readers into a single group to determine at least one group, classifying RPM readers included in each group into at least one sub-group based on a read time of each RFID reader, and driving the RFID readers such that RPM readers belonging to at least two different sub-groups that do not collide with each other simultaneously operate. According to the present invention, switching is performed sub-group by sub-group to reduce the number of switching operations and sub-groups can simultaneously operate to decrease a read time.
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Citations
13 Claims
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1. A method of operating an RFID (Radio Frequency Identification) system including multiple RFID readers, comprising:
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grouping RFID readers spaced apart by more than a spacing distance capable of avoiding collision between RFID readers into a single group to determine at least one group; classifying RFID readers included in each group into at least one sub-group based on a read time of each RFID reader; and driving the RFID readers such that RFID readers belonging to at least two different sub-groups that do not collide with each other simultaneously operate. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computer readable recording medium storing a program for executing on a computer a method of operating an RFID (Radio Frequency Identification) system including multiple RFID readers, comprising:
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grouping RFID readers spaced apart by more than a spacing distance capable of avoiding collision between RFID readers into a single group to determine at least one group; classifying RFID readers included in each group into at least one sub-group based on a read time of each RFID reader; and driving the RFID readers such that RFID readers belonging to at least two different sub-groups that do not collide with each other simultaneously operate.
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8. A system of operating an RFID system including multiple RFID readers, comprising:
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a grouping unit grouping RFID readers spaced apart by more than a spacing distance capable of avoiding collision between RFID readers into a single group to determine at least one group; a classification unit classifying RFID readers included in each group into at least one sub-group based on a read time of each RFID reader; and a driving unit driving the RFID readers such that RFID readers belonging to at least two different sub-groups that do not collide with each other simultaneously operate. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification