Enhanced integrated circuit with smartcard controller
First Claim
Patent Images
1. A memory card that includes an integrated circuit for communications, the integrated circuit comprising:
- a smartcard controller;
an amplifier to receive a signal from a receive antenna when the receive antenna is inductively coupled to another device, the amplifier providing a simplex communication path from the receive antenna to a contactless interface on the smartcard controller; and
a transmit circuit to receive outgoing data from the contactless interface and to drive a transmit antenna.
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Abstract
An RFID card includes a smartcard controller that receives power from a host device. The RFID card also includes a small inductive device capable of inductive coupling with an RFID reader. The small inductive device is small enough to fit in the form factor of a memory card or SIM card. Enhancement circuits enhance the usable read and write distance of the RFID card.
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Citations
12 Claims
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1. A memory card that includes an integrated circuit for communications, the integrated circuit comprising:
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a smartcard controller; an amplifier to receive a signal from a receive antenna when the receive antenna is inductively coupled to another device, the amplifier providing a simplex communication path from the receive antenna to a contactless interface on the smartcard controller; and a transmit circuit to receive outgoing data from the contactless interface and to drive a transmit antenna. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A subscriber identity module (SIM) card that includes an integrated circuit for communications, the integrated circuit comprising:
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a smartcard controller; an amplifier to receive a signal from a receive antenna when the receive antenna is inductively coupled to another device, the amplifier providing a simplex communication path from the receive antenna to a contactless interface on the smartcard controller; and a transmit circuit to receive outgoing data from the contactless interface and to drive a transmit antenna. - View Dependent Claims (8, 9, 10, 11)
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12. An integrated circuit comprising:
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a smartcard controller; an amplifier to receive a signal from a receive antenna when the receive antenna is inductively coupled to another device, the amplifier providing a simplex communication path from the receive antenna to a contactless interface on the smartcard controller; and a transmit circuit to receive outgoing data from the contactless interface and to drive a transmit antenna.
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Specification