PASSIVE WIRELESS MEMORY DEVICE
First Claim
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1. A passive wireless memory device comprising:
- a memory unit; and
a passive tag to convert data stored in the memory unit into a data packet in response to first to third chronological data request signals from a reader and to transmit the data packet to the reader,wherein the passive tag determines the size of the data packet in response to a channel state predicting flag and the second and third data request signals.
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Abstract
A passive wireless memory device includes a memory unit and a passive tag. The passive tag converts data stored in the memory unit into a data packet in response to first to third data request signals from a reader and transmits the data packet to the reader. The passive tag determines the size of the data packet in response to the channel state predicting flag and the second and third data request signals.
32 Citations
20 Claims
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1. A passive wireless memory device comprising:
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a memory unit; and a passive tag to convert data stored in the memory unit into a data packet in response to first to third chronological data request signals from a reader and to transmit the data packet to the reader, wherein the passive tag determines the size of the data packet in response to a channel state predicting flag and the second and third data request signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An RFID reader, comprising:
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a communication unit to transmit and receive data; and a control unit to generate command packets to transmit to an RFID tag and to process response data received from the RFID tag in response to the command packets, wherein the command packets include at least a data request packet to instruct the RFID tag to transmit to the RFID reader data. - View Dependent Claims (13, 14, 15, 16, 17)
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18. An RFID tag, comprising:
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an antenna to transmit and receive data to and from a radio device; radio communication unit to process data to transmit to, and received from, the antenna; and a tag control unit to control a packet size of data transmitted to the antenna according to a detected signal characteristic of a data transmission signal between the antenna and the radio device. - View Dependent Claims (19, 20)
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Specification