Smart card with contactless optical interface

• US 5,789,733 A
• Filed: 09/20/1996
• Issued: 08/04/1998
• Est. Priority Date: 09/20/1996
• Status: Expired due to Term

• Current Assignee: Freescale Semiconductor, Inc. (NXP Semiconductors NV)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Novis, Scott R., Jiang, Wenbin, Lebby, Michael S., Jachimowicz, Karen E., Barry, Dennis
• Primary Examiner(s): Hajec, Donald T.
• Assistant Examiner(s): LEE, MICHAEL GUNYOUNG
• Application Number:
  US08/717,058
• Time in Patent Office: 683 Days
• Field of Search: 235/492, 235/435, 235/439, 235/451, 235/454, 235/487, 235/491, 235/379, 235/380, 902/25, 902/26, 359/1, 359/2, 359/15
• US Class Current: 235/492
• CPC Class Codes: G06K 19/0728 the arrangement being an optical or sound-based communication interface
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 7/1097 Optical sensing of electronic memory record carriers, such as interrogation of RFIDs with an additional optical interface

Abstract

An optical smart card (10) including a microchip (14) having information stored thereon, an optical holographic sensor pad (16) capable of detecting and collecting light beams emitted from a remote reader/transmitter (52), a light source (18) capable of emitting dataelectronic information contained on the microchip (14) back to the remote reader/transmitter (52) and electronics (20) connected to the sensor pad (16), the light source (18) and the microchip (14).

Claims

1. A smart card comprising:

a microchip embedded within the smart card, having a data input terminal and a data output terminal, and capable of storing dataelectronic information thereon;

a sensor pad, including an optical hologram embedded within the smart card, capable of collecting and detecting coherent light beams and dataelectronic information submitted by a remote reader/transmitter device;

a light source embedded within the smart card, capable of transmitting responsive data therebetween the smart card and the remote reader/transmitter device; and

electronics mounted in the smart card and connected to the sensor pad for receiving the coherent light beams and the dataelectronic information from the remote reader/transmitter device, the electronics further connected to the data input terminal and data output terminal of the microchip for transmitting and receiving the dataelectronic information, and further connected to the light source for supplying data thereto the remote reader/transmitter device in response to the dataelectronic information stored thereon the microchip.

2. A smart card as claimed in claim 1 wherein the light source is at least one vertical cavity surface emitting laser (VCSEL).

3. A smart card as claimed in claim 2 wherein the at least one vertical cavity surface emitting laser (VCSEL) is fabricated to emit infra-red light in a range of 750 nm to 2000 nm.

4. A smart card as claimed in claim 2 wherein the at least one vertical cavity surface emitting laser (VCSEL) is fabricated to emit visible light in a range of 350 nm to 750 nm.

5. A smart card as claimed in claim 1 further including at least one of an alphanumeric input device and a biometric input device connected to the data input terminal of the microchip.

6. A smart card as claimed in claim 1 wherein the electronics includes a central processing unit (CPU) and a random access memory (RAM).

7. An optical smart card comprising:

a microchip at least partially embedded within the smart card, having a data input terminal and a data output terminal, and capable of storing dataelectronic information thereon;

an optical hologram embedded within the smart card, capable of collecting and detecting coherent light beams and dataelectronic information submitted by a remote reader/transmitter device;

a vertical cavity surface emitting laser (VCSEL) embedded within the smart card, capable of transmitting responsive data therebetween the smart card and the remote reader/transmitter device; and

electronics mounted in the smart card and connected to the optical hologram for receiving the coherent light beams and the dataelectronic information from the remote reader/transmitter device, the electronics further connected to the data input terminal and data output terminal of the microchip for transmitting and receiving the dataelectronic information, and further connected to the vertical cavity surface emitting laser (VCSEL) for supplying data thereto the remote reader/transmitter device in response to the dataelectronic information stored thereon the microchip.

8. An optical smart card as claimed in claim 7 wherein the vertical cavity surface emitting laser (VCSEL) is fabricated of a plurality of epitaxially grown layers.

9. An optical smart card as claimed in claim 8 wherein the vertical cavity surface emitting laser (VCSEL) is fabricated to emit visible light in a range of 750 nm to 2000 nm.

10. An optical smart card as claimed in claim 8 wherein the vertical cavity surface emitting laser (VCSEL) is fabricated to emit infra-red light in a range of 350 nm to 750 nm.

11. An optical smart card as claimed in claim 8 further including safety features to prevent unauthorized access of information contained on the microchip.

12. An optical smart card as claimed in claim 8 wherein the electronics includes a central processing unit (CPU) and a random access memory (RAM).