INVENTORYING TRANSPONDERS
First Claim
1. A method comprising:
- retrieving ancillary data relating to a set of two or more transponders or objects to which such transponders are attached, said ancillary data comprising characteristic data other than a permanent identifier;
generating optimisation data in dependence upon said ancillary data, said optimisation data chosen to address transponders in the set of two or more transponders in subsets of one or more transponders, wherein the optimisation data chosen is chosen such that the combined expected inventorying time of the subsets of one or more transponders is less than the expected inventorying time of the set of two or more transponders; and
generating one or more commands for inventorying of the subsets of one or more transponders in dependence upon said optimisation data.
1 Assignment
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Accused Products
Abstract
Ancillary data (51) can be used to reduce collisions and/or speed up authentication when inventorying transponders. A method is described which comprises retrieving 5 ancillary data for a set of one or more transponders (4), the ancillary data comprising characteristic data other than a permanent identifier and generating one or more commands (54) addressed to a set of one or more transponders in dependence upon said ancillary data. A method for creating ancillary data is described. The method comprises receiving inventorying data resulting from 10 inventorying one or more transponders, each transponder having at least one permanent identifier, extracting ancillary data from said inventorying data and/or generating ancillary data in dependence on said inventorying data.
32 Citations
65 Claims
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1. A method comprising:
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retrieving ancillary data relating to a set of two or more transponders or objects to which such transponders are attached, said ancillary data comprising characteristic data other than a permanent identifier; generating optimisation data in dependence upon said ancillary data, said optimisation data chosen to address transponders in the set of two or more transponders in subsets of one or more transponders, wherein the optimisation data chosen is chosen such that the combined expected inventorying time of the subsets of one or more transponders is less than the expected inventorying time of the set of two or more transponders; and generating one or more commands for inventorying of the subsets of one or more transponders in dependence upon said optimisation data. - View Dependent Claims (3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 49, 50, 52)
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2. (canceled)
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7. (canceled)
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32. A method comprising:
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receiving inventorying data resulting from inventorying two or more transponders in an interrogator-transponder system, each transponder having at least one permanent identifier and wherein said ancillary data allows transponders in the interrogator-transponder system to be addressed in subsets of one or more transponders, wherein the combined expected inventorying time of the subsets of one or more transponders is less than the expected inventorying time of all transponders in the subsets of one or more transponders; extracting ancillary data from said inventorying data and/or generating ancillary data in dependence on said inventorying data, said ancillary data comprising characteristic data other than a permanent identifier; and storing said ancillary data with the permanent identifier. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 63, 64)
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33. (canceled)
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51. (canceled)
- 53. (canceled)
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54. Apparatus comprising:
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means for receiving inventorying data resulting from inventorying one or more transponders in an interrogator-transponder system, each transponder having at least one permanent identifier; means for extracting ancillary data from said inventorying data and/or generating ancillary data in dependence on said inventorying data, said ancillary data comprising characteristic data other than a permanent identifier and wherein said ancillary data allows transponders in the interrogator-transponder system to be addressed in subsets of one or more transponders, wherein the combined expected inventorying time of the subsets of one or more transponders is less than the expected inventorying time of all transponders in the subsets of one or more transponders; and means for storing said ancillary data with the permanent identifier. - View Dependent Claims (56)
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55. (canceled)
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57. Apparatus comprising:
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means relating to retrieving ancillary data for a set of two or more transponders or objects to which such transponders are attached, said ancillary data comprising characteristic data other than a permanent identifier; means for generating optimisation data in dependence upon said ancillary data, said optimisation data chosen to address transponders in the set of two or more transponders by subsets of one or more transponders, wherein the optimisation data chosen is chosen such that the combined expected inventorying time of the subsets of one or more transponders is less than the expected inventorying time of the set of two or more transponders; and means for generating one or more commands for the inventorying of the subsets of one or more transponders in dependence upon said optimisation data.
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58. (canceled)
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65-80. -80. (canceled)
Specification