Authenticating optical-card reader
First Claim
1. A read-only optical device comprising:
- a housing having a slot for slidably receiving an optical card, the optical card having a plurality of physical tracks with an arrangement of physical pits to define an optically encoded biometric;
a light detector fixed in position relative to the housing;
an optical train fixed in position relative to the housing and configured to provide optical paths between the light detector and the optical card as the optical card is slid along the slot;
a biometric sensor; and
a processor coupled with the light detector and with the biometric sensor, the processor having programming instructions to compare a biometric measured by the biometric sensor with the optically encoded biometric read from the optical card with the light detector.
1 Assignment
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Accused Products
Abstract
Methods and devices are provided for reading optical cards. A housing has a slot for slidably receiving an optical card. The optical card has physical tracks with an arrangement of physical pits to define on optically encoded biometric. A light detector is fixed in position relative to the housing. An optical train is also fixed in position relative to the housing and is configured to provide optical paths between the light detector and the optical card as the optical card is slid along the slot. A biometric sensor is provided. A processor is coupled with the light detector and with the biometric sensor. The processor has programming instructions to compare a biometric measured by the biometric sensor with the optically encoded biometric read from the optical card with the light detector.
139 Citations
25 Claims
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1. A read-only optical device comprising:
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a housing having a slot for slidably receiving an optical card, the optical card having a plurality of physical tracks with an arrangement of physical pits to define an optically encoded biometric;
a light detector fixed in position relative to the housing;
an optical train fixed in position relative to the housing and configured to provide optical paths between the light detector and the optical card as the optical card is slid along the slot;
a biometric sensor; and
a processor coupled with the light detector and with the biometric sensor, the processor having programming instructions to compare a biometric measured by the biometric sensor with the optically encoded biometric read from the optical card with the light detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of controlling access to a restricted area or function, the method comprising:
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detecting a presence of an optical card being moved manually by a human being, the optical card having a plurality of physical tracks with an arrangement of physical pits to define an optically encoded token;
illuminating a fixed region through which a surface of the optical card passes as the optical card is moved manually by the human being;
propagating light reflected from the optical card as the optical card is moved manually by the human being to a fixed light detector to read the optically encoded token;
receiving a reference token from the human being; and
comparing the reference token received from the human being with the optically encoded token read from the optical card. - View Dependent Claims (12, 13, 14, 15, 21, 22)
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16. An optical card comprising a substrate having a plurality of physical pits formed within a plurality of physical tracks organized as a series of substantially parallel rows within the substrate, wherein:
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the physical pits define a pattern of blobs within a plurality of logical tracks, each such logical track spanning a plurality of the physical tracks; and
the pattern of blobs is an encoded arrangement of data. - View Dependent Claims (17, 18, 19, 20)
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23. A method for reading an optical card having a plurality of physical pits formed within a plurality of physical tracks organized as a series of substantially parallel rows within the substrate, the method comprising:
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illuminating each of a plurality of logical tracks, each such logical track spanning a plurality of the physical tracks;
receiving light reflected from the plurality of logical tracks to identify a pattern of blobs within the plurality of logical tracks, each such blob comprising a two-dimensional array of physical pits; and
decoding the pattern of blobs to identify an encoded arrangement of data. - View Dependent Claims (24, 25)
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Specification