Electronically Switchable RFID Tags
First Claim
Patent Images
10. A RFID tag comprising:
- a mechanical switch;
an antenna configured to receive data in a first RF signal, to receive energy from the first RF signal, and to transmit data in a second RF signal; and
integrated circuitry including an input configured to receive data from the antenna, an output configured to provide the second RF signal to the antenna for transmission, a state memory configured to store an state of the RFID tag, and a switch logic configured to receive data from the input, and to determine whether or not to provide the second RF signal to the antenna for transmission, the determination being responsive to the state stored in the state memory or the mechanical switch.
2 Assignments
0 Petitions
Accused Products
Abstract
Various switchable RFID devices are disclosed. These switchable RFID devices may include one or more RFID tags and one or more switches. Some of these one or more switches are optionally wireless. In various embodiments, the switchable RFID devices include identity devices, financial devices, remote controls, and the like. In some embodiments, switches are configured to enter data into a switchable RFID device, for example to select a financial account.
-
Citations
34 Claims
-
10. A RFID tag comprising:
-
a mechanical switch;
an antenna configured to receive data in a first RF signal, to receive energy from the first RF signal, and to transmit data in a second RF signal; and
integrated circuitry including an input configured to receive data from the antenna, an output configured to provide the second RF signal to the antenna for transmission, a state memory configured to store an state of the RFID tag, and a switch logic configured to receive data from the input, and to determine whether or not to provide the second RF signal to the antenna for transmission, the determination being responsive to the state stored in the state memory or the mechanical switch. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 22, 24)
-
-
12-1. The RFID tag of claim 10, wherein the mechanical switch is configured for authorizing a transaction.
-
20. A method of changing a state of an RFID Tag, the method comprising:
-
receiving energy sufficient to power the RFID Tag through an RF antenna included in the RFID tag;
receiving first data through the RF antenna;
reading a key from a key memory;
using an integrated circuit to compare the first data received through the RF antenna with the key read from the key memory, the integrated circuit powered by the received energy; and
writing data to state memory responsive to the comparison, the data written to the state memory being configured to change the RFID tag from a first state to a second state. - View Dependent Claims (21, 23, 25, 26, 27, 28, 29)
-
-
30. A method comprising:
-
receiving a first signal at an RFID Tag through an RF antenna included in the RFID tag;
reading a state from a state memory, the state memory being configured to alternatively store an OFF state, a first ON state and a second ON state; and
sending a response signal using the RF antenna if the state is the first ON state or the second ON state, the response signal being a response to the first signal. - View Dependent Claims (31, 32, 33, 34)
-
Specification