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US 7,116,677 B2Granted
Data carrier including a circuit with time slot determination means and time slot fixation means
AssigneeKoninklijke Philips Electronics N.V.
InventorFranz Amtmann
Life of this patent
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Abstract
Each data carrier of multiple data carriers is assigned a time slot within which to communicate with a base station. The base station allocates the time slots by acknowledging receipt of a data carrier's unique identifier during the assigned time slot. Each data carrier stores its assigned time slot, and communicates only when a time-slot counter indicates the occurrence of the assigned time slot.
Claims17
An apparatus comprising:
- a circuit that is configured to:
- receive and transmit data blocks;
- receive a selection data block (SDB);
- produce and transmit an identification data block (IDB);
- and
- time slot fix an nth time slot of a plurality of time slot sequences;
- and
- a controller that is configured to enable communication from the circuit during the nth time slot.
5 more elements
An apparatus comprising:
- a circuit that is configured to:
- receive data blocks;
- receive a selection data block (SDB);
- and
- time slot fix an nth time slot of a plurality of time slot sequences;
- and
- controller that is configured to enable communication from the circuit only during the nth time slot of the plurality of time slot sequences.
4 more elements
A receiving and transmission device comprising:
- a means for receiving a selection data block (SDB);
- a means for producing an identification data block (IDB) and transmitting the IDB;
- a means for fixing an nth time slot of a plurality of time slot sequences;
- and
- a means for enabling communication during the nth time slot of the plurality of time slot sequences.
2 more elements
A method comprising:
- receiving a selection data block (SDB);
- transmitting an identification data block (IDB) in response to receipt of the SDB;
- fixing an nth time slot of a plurality of time slot sequences;
- and
- enabling communication from the circuit during the nth time slot.
2 more elements
A method comprising:
- receiving a selection data block at a data carrier;
- recognizing the data carrier as being selected from amongst a plurality of data carriers;
- outputting from the data carrier an identification data block during a duration of an nth time slot of a time sequence;
- and
- controlling subsequent communication from the data carrier to occur only during the nth time slot.
2 more elements
A method comprising:
- receiving a selection data block at a data carrier;
- in response to receiving the selection data block, recognizing the data carrier as being selected from amongst a plurality of data carriers;
- in response to the recognizing, outputting from the data carrier an identification data block during a duration of an nth time slot of a time sequence;
- and
- controlling communication from the data carrier to occur only during the nth time slot.
2 more elements
Dependencies are inferred from the claim text.