Secure smart card reader with virtual image display and pull-down options

• US 5,728,998 A
• Filed: 03/29/1996
• Issued: 03/17/1998
• Est. Priority Date: 03/29/1996
• Status: Expired due to Fees

• Current Assignee: Freescale Semiconductor, Inc. (NXP Semiconductors NV)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Rhyne, George W., Barry, Dennis, Van Zile, Jack, Novis, Scott R., Jachimowicz, Karen E.
• Primary Examiner(s): Hajec, Donald T.
• Assistant Examiner(s): LEE, MICHAEL GUNYOUNG
• Application Number:
  US08/625,654
• Time in Patent Office: 718 Days
• Field of Search: 235/380, 235/472, 235/441, 235/454, 235/487, 235/492, 235/375, 235/457, 359/802, 359/803, 359/630, 345/7, 345/8, 345/32
• US Class Current: 235/380
• CPC Class Codes: G06K 13/08 Feeding or discharging cards
• CPC Class Codes: G06K 7/0013 by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers connectors in general H01R13/00; connectors for SIM cards used in mobile phones or the like H04B1/3816

Abstract

A smart card reader including a portable housing with a viewing aperture and a virtual image display positioned to provide an image at the aperture. A sensor in the housing constructed to have a smart card with data stored thereon positioned adjacent thereto in data sensing juxtaposition and electronics mounted in the housing and connected to the sensor for receiving sensed data and further connected to the virtual image display for supplying image data thereto.

Claims

1. A smart card reader comprising:

a portable housing including a viewing aperture;

a virtual image display mounted in the housing and positioned to provide an image for viewing at the viewing aperture, the virtual image display including a data input terminal designed to receive image data thereon, the virtual image display further including a plurality of optical elements having a light inlet and a light outlet directed at an angle to the inlet, with a reflecting surface optically positioned between the inlet and the outlet so as to direct light from the inlet to the outlet, the plurality of optical elements include at least one aspheric surface for aberration correction, the plurality of optical elements defining a light path from the light inlet to the light outlet with a total average optical length in the range of approximately 20 to 35 millimeters, and at least one diffractive optical element positioned in the light path so as to provide further aberration correction, and the plurality of optical elements being constructed to angularly magnify an image source at the light inlet of the plurality of optical elements by greater than ten;

sensor structure mounted in the housing and constructed to have a smart card having data stored thereon positioned adjacent thereto in data sensing juxtaposition, the sensor structure including an output terminal having sensed data thereon; and

electronics mounted in the housing and connected to the output terminal of the sensor structure for receiving the sensed data and further connected to the input terminal of the virtual image display for supplying image data thereto.

2. A smart card reader as claimed in claim 1 wherein the virtual image display includes a two dimensional array of light emitting devices connected to provide a complete real image, the two dimensional array being coupled to the input terminal of the virtual image display for receiving the image data and generating the real image in response thereto.

3. A smart card reader as claimed in claim 2 wherein the two dimensional array of light emitting devices includes a two dimensional array of light emitting diodes.

4. A smart card reader as claimed in claim 3 wherein the two dimensional array of light emitting devices includes a two dimensional array of organic light emitting diodes.

5. A smart card reader as claimed in claim 2 wherein the two dimensional array of light emitting devices includes a two dimensional array of liquid crystal devices.

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

7. A smart card reader as claimed in claim 1 wherein the electronics includes a power management unit.