Prerecorded dual strip data storage card

• US 4,609,812 A
• Filed: 09/10/1985
• Issued: 09/02/1986
• Est. Priority Date: 02/27/1981
• Status: Expired due to Term

• Current Assignee: LaserCard Corp. (Assa Abloy AB)
• Original Assignee: Drexler Technology Corporation (Assa Abloy AB)
• Inventors: Drexler, Jerome
• Primary Examiner(s): Pitts, Harold I.
• Application Number:
  US06/774,576
• Time in Patent Office: 357 Days
• Field of Search: 235/493, 235/487
• US Class Current: 235/487
• CPC Class Codes: G06K 19/12 the marking being sensed by magnetic means
• CPC Class Codes: G06K 19/14 the marking being sensed by radiation
• CPC Class Codes: G07C 9/25 using biometric data, e.g. fingerprints, iris scans or voice recognition
• CPC Class Codes: G11B 7/0033 with cards or other card-like flat carriers, e.g. flat sheets of optical film
• CPC Class Codes: G11B 7/24 Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the arrangement of information on the carrier G11B7/007

Abstract

A data storage card having spaced apart data strips. The card is wallet-size and preferably the strips run parallel to the lengthwise dimension of the card. One strip is made of a high capacity reflective read-only optical memory (ROOM) material. The other strip is a magnetic recording material. The high capacity ROOM strip may be made of a laser recorded material or it may be made of a material which is prerecorded using a photographic process. The two strips store complementary data in database applications.

Claims

1. A data storage card for use with a card reader comprising,

a wallet-size card having opposed sides and a length equal to or exceeding a width,

a first strip of high resolution reflective read-only optical memory material adhered to the card, said first strip containing photolithographically prerecorded high and low reflectivity data areas representing data bits, the reflective contrast ratio between said high and low reflectivity data areas at least two to one, and

a second strip of magnetic recordable material adhered to the card.

2. The card of claim 1 wherein said first and second strips are adhered to the same side of said card.

3. The card of claim 1 wherein said first and second strips are adhered to opposite sides of said card.

4. The card of claim 1 wherein said first and second strips are disposed parallel to each other and spaced apart on the same side of said card, said strips extending in the lengthwise direction.

5. A data storage and retrieval system comprising,

a wallet-size card having opposed sides and a length equal to or exceeding a width,

a first strip of high resolution reflective read-only optical memory material adhered to the card, said first strip containing photolithographically prerecorded high and low reflectivity data areas representing data bits, the reflective contrast ratio between said high and low reflectivity data areas at least two to one,

a second strip of magnetic recordable material adhered to the card,

light source means emitting a beam for illuminating data areas on said first strip and a photodetector, said light source means and said photodetector disposed in reflective data-read relation with respect to said first strip of said card, and

a magnetic head in magnetic writing relation with respect to said second strip.

6. The card of claim 5 wherein said first and second strips are adhered to the same side of said card.

7. The card of claim 5 wherein said first and second strips are adhered to opposite sides of said card.

8. The card of claim 5 wherein said first and second strips are disposed parallel to each other and spaced apart on the same side of said card, said strips extending in the lengthwise direction.