Interrogator, transponder and transponder identification method
First Claim
1. An interrogator that makes wireless communication with a transponder, comprising:
- a temporary number specify section that transmits a request for transmission of a unit bit string as a bit string having a predetermined length in a bit string expressing a temporary number owned by the transponder, receives a unit bit string transmitted from the transponder in response to the request, and specifies the temporary number of the transponder, based on the unit bit string; and
an identification information obtaining section that transmits, if a temporary number of a transponder is specified by the temporary number specify section, a request for transmission of identification information of the transponder to the transponder, and receives the identification information transmitted from the transponder, in response to the request.
1 Assignment
0 Petitions
Accused Products
Abstract
There is provided an interrogator, transponder, and transponder identification method, which shorten processing time for identification. An interrogator that makes wireless communication with a transponder, comprising: a temporary number specify section that transmits a request for transmission of a unit bit string as a bit string having a predetermined length in a bit string expressing a temporary number owned by the transponder, receives a unit bit sting transmitted from the transponder in response to the request, and specifies the temporary number of the transponder, based on the unit bit string; and an identification information obtaining section that transmits, if a temporary number of a transponder is specified by the temporary number specify section, a request for transmission of identification information of the transponder to the transponder, and receives the identification information transmitted from the transponder, in response to the request.
-
Citations
20 Claims
-
1. An interrogator that makes wireless communication with a transponder, comprising:
-
a temporary number specify section that transmits a request for transmission of a unit bit string as a bit string having a predetermined length in a bit string expressing a temporary number owned by the transponder, receives a unit bit string transmitted from the transponder in response to the request, and specifies the temporary number of the transponder, based on the unit bit string; and an identification information obtaining section that transmits, if a temporary number of a transponder is specified by the temporary number specify section, a request for transmission of identification information of the transponder to the transponder, and receives the identification information transmitted from the transponder, in response to the request. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A transponder that makes wireless communication with an interrogator, comprising:
-
a temporary number generation section that generates a temporary number; a unit bit string transmitter that transmits, if a request for transmission of a unit bit string as a bit string having a predetermined length in a bit string of a temporary number, the unit bit string; and an identification information transmitter that transmits, if a request for transmission of identification information is received from the interrogator, the identification information to the interrogator. - View Dependent Claims (9, 10, 11, 12)
-
-
13. A transponder identification method by which identification of a transponder is performed by wireless communication between an interrogator and the transponder, comprising:
-
a temporary number generation step of the transponder that generates a temporary number; a unit bit string request transmission step of the interrogator that transmits a request for transmission of a unit bit string as a bit string having a predetermined length in a bit string of a temporary number owned by the transponder; a unit bit string transmission step of the transponder that transmits the unit bit string if the request transmitted by the temporary number request step is received; a temporary number specify step of the interrogator that receives the unit bit string transmitted by the temporary number transmission step, and specifies the temporary number of the transponder, based on the unit bit string; an identification information transmission request transmission step of the interrogator that transmits a request for transmission of identification information of the transponder to the transponder if the temporary number of the transponder is specified by the temporary number specify step; an identification information transmission step of the transponder that transmits the identification information to the interrogator if the request transmitted by the identification information request step is received; and an identification information reception step of the interrogator that receives the identification information transmitted by the identification information request step. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification