Multi-frequency identification device
First Claim
1. In vehicle tracking a Radio-Frequency Identification (RFID) system comprising a reader that operates on multiple frequencies frequency bands and an RFID tag transponder that operates on multiple frequencies frequency bands, a method for secure vehicle identification, comprising:
- the tag RFID transponder engaging in a non-secure interaction with the reader over a first frequency band, the non-secure interaction comprising a first signal modulation technique;
the tag RFID transponder engaging in a secure interaction with the reader over a second frequency band, the secure interaction comprising the first signal modulation technique, wherein the second frequency band limits the range of the RFID system to a shorter distance relative to the first frequency band; and
the tag RFID transponder receiving authentication based on the non-secure and secure interaction.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention comprises a radio frequency identification device that utilizes multiple operating frequencies. In one embodiment of the present invention, one frequency (e.g., an ultra-high frequency such as 915 MHz, 800 MHz, 915 MHz, or microwave frequency such as 2.45 GHz) is used for data transmission, and another frequency (e.g., a low or high frequency such as 13.56 MHz) is used for field penetration. In another embodiment, one frequency is used for reading information received from the multi-frequency identification device, and another frequency is used for writing to the multi-frequency identification device. In an additional embodiment, the multi-frequency identification device utilizes one antenna for all frequencies. In another embodiment, the multi-frequency identification device utilizes two or more antennas for different frequencies, and one common memory. In other embodiments, one or two digital parts, analog parts, antennas, and memories can be used.
9 Citations
18 Claims
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1. In vehicle tracking a Radio-Frequency Identification (RFID) system comprising a reader that operates on multiple frequencies frequency bands and an RFID tag transponder that operates on multiple frequencies frequency bands, a method for secure vehicle identification, comprising:
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the tag RFID transponder engaging in a non-secure interaction with the reader over a first frequency band, the non-secure interaction comprising a first signal modulation technique; the tag RFID transponder engaging in a secure interaction with the reader over a second frequency band, the secure interaction comprising the first signal modulation technique, wherein the second frequency band limits the range of the RFID system to a shorter distance relative to the first frequency band; and the tag RFID transponder receiving authentication based on the non-secure and secure interaction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification