Radio-frequency identification system, method of carrying out radio-frequency identification, and program for radio-frequency identification
First Claim
1. A radio-frequency identification system comprising:
- (a) a plurality of responders each of which has a unique identification number, and makes a response in radio-frequency communication to an inquiry transmitted from a later mentioned interrogator;
(b) an interrogator which makes an inquiry to each of said responders, and receives said response from each of said responders; and
(c) a host computer which controls communication made between said responders and said interrogator, and binary-searches a number space of said identification number of each of said responders for identifying a responder(s) existing in a communication area in which said responders and said interrogator can make communication with each other, said host computer having a function of acting as a discriminator for generating a control signal in accordance with first to N-th communication areas in each of which said responders and said interrogator can make communication with each other, binary-searching said number space in each of said first to N-th communication areas one by one to identify a responder(s) existing therein, and inactivating the thus identified responder(s), wherein N is a positive integer equal to or greater than two, and said function is accomplished by software.
4 Assignments
0 Petitions
Accused Products
Abstract
A radio-frequency identification system includes (a) responders each having a unique identification number, (b) an interrogator making an inquiry to and receiving a response from each of the responders, and (c) a host computer controlling communication made between the responders and the interrogator, and binary-searching a number space of the identification number of each of the responders for identifying a responder(s) existing in a communication area in which the responders and the interrogator can make communication with each other. The host computer has a function of acting as a discriminator for generating a control signal in accordance with first to N-th (N≧2) communication areas in each of which the responders and the interrogator can make communication with each other, binary-searching the number space in each of the first to N-th communication areas one by one to identify a responder(s) existing therein, and inactivating the thus identified responder(s).
33 Citations
29 Claims
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1. A radio-frequency identification system comprising:
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(a) a plurality of responders each of which has a unique identification number, and makes a response in radio-frequency communication to an inquiry transmitted from a later mentioned interrogator;
(b) an interrogator which makes an inquiry to each of said responders, and receives said response from each of said responders; and
(c) a host computer which controls communication made between said responders and said interrogator, and binary-searches a number space of said identification number of each of said responders for identifying a responder(s) existing in a communication area in which said responders and said interrogator can make communication with each other, said host computer having a function of acting as a discriminator for generating a control signal in accordance with first to N-th communication areas in each of which said responders and said interrogator can make communication with each other, binary-searching said number space in each of said first to N-th communication areas one by one to identify a responder(s) existing therein, and inactivating the thus identified responder(s), wherein N is a positive integer equal to or greater than two, and said function is accomplished by software. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of carrying out radio-frequency identification in a radio-frequency identification system comprising:
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(A) a plurality of responders each of which has a unique identification number, and makes a response in radio-frequency communication to an inquiry transmitted from a later mentioned interrogator;
(B) an interrogator which makes an inquiry to each of said responders, and receives said response from each of said responders; and
(C) a host computer which controls communication made between said responders and said interrogator, and binary-searches a number space of said identification number of each of said responders for identifying a responder(s) existing in a communication area in which said responders and said interrogator can make communication with each other, said method including the steps of;
(a) generating a control signal in accordance with first to N-th communication areas in each of which said responders and said interrogator can make communication with each other, wherein N is a positive integer equal to or greater than two;
(b) binary-searching said number space in each of said first to N-th communication areas one by one to identify a responder(s) existing therein; and
(c) inactivating the thus identified responder(s), wherein said steps (a), (b) and (c) are carried out by said host computer. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A program for causing a computer to control communication made between each of a plurality of responders each of which has a unique identification number, and makes a response in radio-frequency communication to an inquiry transmitted from a later mentioned interrogator, and an interrogator which makes an inquiry to each of said responders, and receives said response from each of said responders, and binary-search a number space of said identification number of each of said responders for identifying a responder(s) existing in a communication area in which said responders and said interrogator can make communication with each other,
wherein steps executed by said computer in accordance with said program includes: -
(a) generating a control signal in accordance with first to N-th communication areas in each of which said responders and said interrogator can make communication with each other, wherein N is a positive integer equal to or greater than two;
(b) binary-searching said number space in each of said first to N-th communication areas one by one to identify a responder(s) existing therein; and
(c) inactivating the thus identified responder(s). - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification