Method of reading data from transponders through a reader, a transponder, and a reader
First Claim
1. A method of reading data from transponders by means of a reader device during a number of time slots, the method comprising:
- observing seizure of said time slots in both the reader device and the transponders; and
performing a reorganization in dependence on said seizure by,simultaneously selecting a new number of time slots in both the reader device and the transponders, andselecting one of the new number of time slots to send data from the transponders to the reader device.
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Accused Products
Abstract
A method of reading data (DAT1 . . . DAT4) from transponders (T1 . . . T4) by means of a reader device (RD) during a number (N) of time slots (TS) is disclosed, wherein the seizure of said time slots (TS) by the transponders (T1 . . . T4) is observed in both the reader device (RD) and the transponders (T1 . . . T4). A reorganization (REORG) is performed in dependence on said seizure, wherein both the reader device (RD) and the transponders (T1 . . . T4) choose a new number (N) of time slots (TS). In addition, the transponders (T1 . . . T4) select one of the new time slots (TS) in which to send data (DAT1 . . . DAT4) back to the reader device (RD) so as to adapt the system'"'"'s capacity to the real demands. Preferably, said reorganization (REORG) takes place without communication between the reader device (RD) and the transponders (T1 . . . T4). The invention further relates to a transponder (T1 . . . T4) and to a reader device (RD) for implementing the inventive method.
11 Citations
16 Claims
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1. A method of reading data from transponders by means of a reader device during a number of time slots, the method comprising:
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observing seizure of said time slots in both the reader device and the transponders; and performing a reorganization in dependence on said seizure by, simultaneously selecting a new number of time slots in both the reader device and the transponders, and selecting one of the new number of time slots to send data from the transponders to the reader device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16)
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11. A system comprising a reader device and at least one transponder wherein the at least one transponder sends data to the reader device during a number of time slots, the at least one transponder comprising:
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means for observing a seizure of said time slots by other transponders; and means for performing a reorganization in dependence on said seizure including, means for choosing a new number of time slots is chosen; and means for selecting one of the new number of time slots in which to send data back to the reader device;
wherein the reader device reads the data from the at least one transponder during the number of time slots, the reader device comprising;means for observing the seizure of said time slots, means for performing the reorganization in dependence on said seizure, wherein both the reader device and the at least one transponder simultaneously select the new number of time slots. - View Dependent Claims (12, 13)
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Specification