Ic Tag Whose Function Can Be Changed Upon Separation
First Claim
1. An IC tag comprising a number n of separable portions A1 to An (n is a natural number such that n≦
- 1), and a portion B other than the separable portions A1 to An,wherein the separable portion Ak (k is a natural number such that l≦
k≦
n) includes an ICk and the portion B includes an ICn+1,the IC tag further comprising a signal line Lk that electrically connects the ICk and the ICk+1, wherein the electrical signal connection is broken upon separation of the Ak,wherein each time the separable portion Ak is separated from A1 to An sequentially, the separation of the Ak is detected and the function of the tag is changed from a first function to the n+1-th function sequentially.
1 Assignment
0 Petitions
Accused Products
Abstract
Data falsification or the like is prevented and security is enhanced in an IC tag. The IC tag consists of three portions: separable portions A1 and A2, and a non-separable portion B (tag main body). The portions A1, A2, and B include IC1, IC2, and IC3, and antenna 1, antenna 2, and antenna 3, respectively, the antennas being an interface between the tag and the outside (a reader/writer device for the exchange of data with the tag). IC1 (10) and IC2 (20) are connected by a signal line L1 for signal transmission between IC1 (10) and IC2 (20). IC2 (20) and IC3 (30) are connected by a signal line L2 for signal transmission between IC2 (20) and IC3 (30). Upon separation of A1 from the tag main body, the signal line L1 is also severed. Similarly, upon separation of A2 from the tag main body, the signal line L2 is severed. Each time the separable portions are separated in the order of A1 to A2, the separation of A1 or A2 is detected, and the function of the tag is changed from the first function to the third function sequentially.
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Citations
39 Claims
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1. An IC tag comprising a number n of separable portions A1 to An (n is a natural number such that n≦
- 1), and a portion B other than the separable portions A1 to An,
wherein the separable portion Ak (k is a natural number such that l≦
k≦
n) includes an ICk and the portion B includes an ICn+1,the IC tag further comprising a signal line Lk that electrically connects the ICk and the ICk+1, wherein the electrical signal connection is broken upon separation of the Ak, wherein each time the separable portion Ak is separated from A1 to An sequentially, the separation of the Ak is detected and the function of the tag is changed from a first function to the n+1-th function sequentially. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
- 1), and a portion B other than the separable portions A1 to An,
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28. An IC tag comprising a number n of separable portions A1 to An (n is a natural number such that n≦
- 1), and a non-separable portion B other than the separable portions A1 to An, wherein each separable portion Ak (k is a natural number such that 1≦
k≦
n) includes an ICk and the non-separable portion B includes an ICn+1, further comprising;a signal line Lk electrically connecting the ICk and the ICn+1, wherein the electric signal connection is severed upon separation of the Ak, the B having an Ak separation detection unit, and wherein each time the separable portion Ak is separated sequentially in the order of A1 to An, the separation of the Ak is detected and the function of the tag changes sequentially from the first function to the n+1-th function. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
- 1), and a non-separable portion B other than the separable portions A1 to An, wherein each separable portion Ak (k is a natural number such that 1≦
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39. An IC tag comprising a number n of separable portions A1 to An (n is a natural number such that n≧
- 1), and a non-separable portion B other than the separable portions A1 to An, wherein each separable portion Ak (k is a natural number such that 1≦
k≦
n) includes an ICk and the non-separable portion B includes an ICn+1, the IC tag further comprising;a signal line Lk which electrically connects the ICk and the ICn+1, wherein the electric signal connection is severed upon separation of the Ak, the B comprising an Ak separation detection unit, and wherein the function of the tag is changed depending on the Ak separated from the tag.
- 1), and a non-separable portion B other than the separable portions A1 to An, wherein each separable portion Ak (k is a natural number such that 1≦
Specification