IDENTIFICATION SYSTEM
First Claim
1. A method of identifying a plurality of transponders, the method comprising receiving at an interrogator a chain of data transmission blocks from each transponder, wherein a first data transmission block in the chain of data transmission blocks contains a transponder identity and number of data transmission blocks in the chain of data transmission blocks;
- one or more further data transmission blocks containing additional block data and a data transmission block number;
the data transmission block number being changed automatically as each data block is transmitted.
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Accused Products
Abstract
A method of identifying a plurality of transponders, the method comprising receiving at an interrogator one or more data transmission blocks from each transponder, wherein the first data block contains a uniquely detectable transponder identity and zero or more further data blocks defining a set of data blocks making up a transponder transmission. The first data transmission block also contains in transmission block number; one or more further data transmission blocks containing additional block data and a respective transmission block number; the block number being changed, by decrement or increment, automatically as each data block is transmitted.
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Citations
20 Claims
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1. A method of identifying a plurality of transponders, the method comprising receiving at an interrogator a chain of data transmission blocks from each transponder, wherein a first data transmission block in the chain of data transmission blocks contains a transponder identity and number of data transmission blocks in the chain of data transmission blocks;
- one or more further data transmission blocks containing additional block data and a data transmission block number;
the data transmission block number being changed automatically as each data block is transmitted. - View Dependent Claims (2, 3, 4, 5)
- one or more further data transmission blocks containing additional block data and a data transmission block number;
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6. A method of identifying a plurality of transponders comprises transmitting an interrogation signal to the transponders and receiving response signals from the transponders, each response signal comprising a chain of data transmission blocks;
- a first data transmission block in the chain of data transmission blocks containing a transponder identity and further containing a number of data transmission blocks in the chain of data transmission blocks derived from a counter in the transponder;
one or more further data transmission blocks containing additional block data, a data transmission block number and an error checking code;
the data transmission block number being decremented automatically by the transponder as each data transmission block of the one or more further data transmission blocks is transmitted.
- a first data transmission block in the chain of data transmission blocks containing a transponder identity and further containing a number of data transmission blocks in the chain of data transmission blocks derived from a counter in the transponder;
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7-8. -8. (canceled)
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9. An identification system comprising an interrogator and a plurality of transponders, the interrogator including a transmitter for transmitting an interrogation signal to the transponders, each transponder including a receiver for receiving the interrogation signal, a transmitter for transmitting a response signal, the response signal comprising a chain of data transmission blocks;
- a first data transmission block in the chain of data transmission blocks containing a transponder identity and further containing a number of data transmission blocks in the chain of data transmission blocks derived from a counter in the transponder;
one or more further data transmission blocks in the chain of data transmission blocks containing additional block data and a data transmission block number;
the data transmission block number being changed automatically by the transponder as each data transmission block is transmitted. - View Dependent Claims (10)
- a first data transmission block in the chain of data transmission blocks containing a transponder identity and further containing a number of data transmission blocks in the chain of data transmission blocks derived from a counter in the transponder;
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11. A transponder, the transponder including a receiver for receiving an interrogation signal from an interrogator, a transmitter for transmitting a response signal after receipt of the interrogation signal, the response signal comprising a chain of data transmission blocks;
- a first data transmission block containing a transponder identity and a number of data transmission blocks in the chain of data transmission blocks derived from a counter in the transponder;
one or more further data transmission blocks containing additional block data and a data transmission block number;
the data transmission block number being changed automatically as each data block is transmitted. - View Dependent Claims (12)
- a first data transmission block containing a transponder identity and a number of data transmission blocks in the chain of data transmission blocks derived from a counter in the transponder;
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13. An integrated circuit for use in a transponder including a receiver for receiving an interrogation signal, a transmitter for transmitting a response signal after receipt of the interrogation signal, the response signal comprising a chain of data transmission blocks;
- a first data transmission block in the chain of data transmission blocks containing a transponder identity and a number of data transmission blocks in the chain of data transmission blocks derived from a counter in the transponder;
one or more further data transmission blocks containing additional block data and a data transmission block number;
the data transmission block number being incremented or decremented automatically as each data block is transmitted. - View Dependent Claims (14)
- a first data transmission block in the chain of data transmission blocks containing a transponder identity and a number of data transmission blocks in the chain of data transmission blocks derived from a counter in the transponder;
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15-19. -19. (canceled)
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20. A method of identifying a plurality of transponders, the method comprising receiving at an interrogator one or more data transmission blocks from each transponder, wherein a first data transmission block of the one or more data transmission blocks contains a uniquely detectable transponder identity and an indication of whether zero or more further data transmission blocks define a set of data transmission blocks making up a transponder transmission.
Specification