Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
38 words
An identification card comprising; an image area; and an image signature derived from optical values from the image area; wherein the image signature is readable from the identification card for comparison to optical values in the image area.
Claim 2
Dependent Claim
23 words
The identification card of claim 1 wherein the image area contains an image of a characteristic which is unique to each human being.
Claim 3
Dependent Claim
27 words
The identification card of claim 2 wherein the image signature is derived from an optical value associated with at least one reference point within the image area.
Claim 4
Dependent Claim
31 words
The identification card of claim 2 wherein the image signature is derived from a function relating the optical value at a reference point to other optical values within the image area.
Claim 5
Dependent Claim
89 words
A self-verifying identification card comprising: an image area having at least one reference point; an image signature derived from an optical value at a reference point in the image area; and at least one registration feature being in a position which determines the orientation, location, and scale of the card as it is scanned by scanning means; wherein the image area contains an image of a characteristic which is unique to each human being and both the image area and the image signature are readable from the identification card.
Claim 6
Dependent Claim
39 words
The invention of claim 2 or 5 wherein the average of a group of optical values at points located near a reference point defines the optical value at that reference point which is used to derive the image signature.
Claim 7
Dependent Claim
21 words
The invention of claim 4 or 6 wherein the image signature is in a mathematically transformed format upon the identification card.
Claim 8
Dependent Claim
17 words
The invention of claim 7 wherein the methematical transformation function is determined from indicia on the card.
Claim 9
Dependent Claim
17 words
The self-verifying identification card of claim 5 wherein the characteristic is a portrait of a human being.
Claim 10
Dependent Claim
18 words
The self-verifying identification card of claim 5 wherein the registration feature is an edge of the image area.
Claim 11
Dependent Claim
27 words
The self-verifying identification card of claim 5 wherein the image signature comprises optical values from the image area and data selected by the issuer of the card.
Claim 12
Independent Claim
70 words
A method of preparing a self-verifying identification card comprising the steps of: optically scanning an image of a characteristic which is unique to each human being for determining an optical value at one or more reference points within an area containing the image; computing an image signature from the optical value at each reference point; and affixing an image of the characteristic and the image signature upon the identification card.
Claim 13
Dependent Claim
11 words
The method of claim 12 wherein the characteristic is a portrait.
Claim 14
Dependent Claim
44 words
The method of claim 12 wherein the optical value at a reference point is determined by the average of a group of optical values at points located near the reference point to define an optical value which is used to derive the image signature.
Claim 15
Dependent Claim
32 words
The invention of claim 6 or 12 wherein the image signature is derived from a function relating the optical value at a reference point to other optical values within the image area.
Claim 16
Dependent Claim
15 words
The method of claim 12 wherein the image signature is in a mathematically translated format.
Claim 17
Dependent Claim
14 words
The invention of claim 4, or 15 wherein the function is a three-level function.
Claim 18
Dependent Claim
13 words
The invention of claim 4 or 15 wherein the function is a ratio.
Claim 19
Dependent Claim
16 words
The invention of claim 4 or 15 wherein the function is derived from a truth table.
Claim 20
Dependent Claim
14 words
The method of claim 16 wherein the mathemetical translation is a one-way hash function.