Two-dimensional printed code for storing biometric information and integrated offline apparatus for reading same
First Claim
1. A two-dimensional, high-density, damage-tolerant printed code printed on a substrate, the two-dimensional printed code encoding information for scanning and decoding by an optical scanner and comprising:
- a decode information portion encoding information to be used by the optical scanner to assist in reading and decoding the printed code, the decode information portion including a horizontal header and a vertical header respectively encoding printed code dimensional information, the horizontal header and the vertical header being repeated at opposite ends of the printed code;
a demarcation portion to demarcate a lateral extent of the printed code from an adjoining portion of the substrate;
row address portions encoding row address information to be used by the optical scanner to assist in reading and decoding the printed code;
a two-dimensional encoded information portion wherein user information and error-correction information is encoded in bit areas disposed in a row-column arrangement, where said bit areas may be printed or blank to encode such information;
said error correction information comprising a plurality of error correction bit groups, each error correction bit group being separately calculated from a corresponding one of a plurality of error correction packets of subunits of user information encoded in said encoded information portion, each subunit of user information in each error correction packet being constituted of bits encoded in bit areas in the encoded information portion which are displaced row-wise and column-wise from bit areas in which are encoded the bits constituting the other subunits in the error correction packet.
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Abstract
A two-dimensional, high-density, damage-tolerant printed code suitable for encoding multiple biometrics and text for positive off-line identity verification comprises a horizontal header section; a vertical header section; a start pattern; a left row address pattern; an encoded data portion; a right two address pattern; and stop pattern. The horizontal header section encodes the number of bit areas in a transverse row of the encoded data portion; and the vertical header section encodes the vertical height of each bit area. The start and stop patterns of the code demarcate the lateral extent of the code (i.e., the beginning and end) from the adjacent quiet zone. Information is encoded into the ended information portion in bit areas that may be printed or blank. The information is encoded sequentially in the information portion from the top of the encoded information portion along each transverse row of bit areas to the next row of bit areas until the end of the encoded information portion. Error correction is applied to subunits of information from the encoded information portion by dividing the user messages and applying error correction to subunits of the user message. The two-dimensional, high-density, damage-tolerant printed code is suitable for printed on a conventionally sized ISO cord or other papers used in verifying identity. An ISO-sized cord or other identity paper bearing a two-dimensional, high-density, damage-tolerant printed code encoding multiple biometrics, e.g., encoded image likeness and multiple finger print templates, maybe used with an off-line integrated positive identity verification apparatus that is capable of decoding the image and fingerprint samples taken from an individual whose identity is sought to be verified.
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Citations
4 Claims
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1. A two-dimensional, high-density, damage-tolerant printed code printed on a substrate, the two-dimensional printed code encoding information for scanning and decoding by an optical scanner and comprising:
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a decode information portion encoding information to be used by the optical scanner to assist in reading and decoding the printed code, the decode information portion including a horizontal header and a vertical header respectively encoding printed code dimensional information, the horizontal header and the vertical header being repeated at opposite ends of the printed code;
a demarcation portion to demarcate a lateral extent of the printed code from an adjoining portion of the substrate;
row address portions encoding row address information to be used by the optical scanner to assist in reading and decoding the printed code;
a two-dimensional encoded information portion wherein user information and error-correction information is encoded in bit areas disposed in a row-column arrangement, where said bit areas may be printed or blank to encode such information;
said error correction information comprising a plurality of error correction bit groups, each error correction bit group being separately calculated from a corresponding one of a plurality of error correction packets of subunits of user information encoded in said encoded information portion, each subunit of user information in each error correction packet being constituted of bits encoded in bit areas in the encoded information portion which are displaced row-wise and column-wise from bit areas in which are encoded the bits constituting the other subunits in the error correction packet.
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2. A two-dimensional, high-density, damage-tolerant printed code printed on a substrate, the two-dimensional printed code encoding information for scanning and decoding by an optical scanner and comprising:
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a decode information portion encoding information to be used by the optical scanner to assist in reading and decoding the printed code;
a demarcation portion to demarcate a lateral extent of the printed code from an adjoining portion of the substrate;
row address portions encoding row address information to be used by the optical scanner to assist in reading and decoding the printed code, each such row address portion corresponding to a row comprising a clock track bit and a gray code;
a two-dimensional encoded information portion wherein user information and error-correction information is encoded in bit areas disposed in a row-column arrangement, where said bit areas may be printed or blank to encode such information;
said error correction information comprising a plurality of error correction bit groups, each error correction bit group being separately calculated from a corresponding one of a plurality of error correction packets of subunits of user information encoded in said encoded information portion, each subunit of user information in each error correction packet being constituted of bits encoded in bit areas in the encoded information portion which are displaced row-wise and column-wise from bit areas in which are encoded the bits constituting the other subunits in the error correction packet.
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3. A system for providing positive off-line identity verification comprising the following elements:
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an identity document, said identity document bearing a two-dimensional, high-density, damage tolerant printed code encoding multiple biometric information and text, said code comprising;
a decode information portion encoding information to be used by the optical scanner to assist in reading and decoding the printed code, the decode information portion including a horizontal header and a vertical header respectively encoding printed code dimensional information, the horizontal header and the vertical header being repeated at opposite ends of the printed code;
a demarcation portion to demarcate a lateral extent of the printed code from an adjoining portion of the substrate;
row address portions encoding row address information to be used by the optical scanner to assist in reading and decoding the printed code; and
a two-dimensional encoded information portion wherein user information and error-correction information is encoded in bit areas disposed in a row-column arrangement, where said bit areas may be printed or blank to encode such information;
said error correction information comprising a plurality of error correction bit groups, each error correction bit group being separately calculated from a corresponding one of a plurality of error correction packets of subunits of user information encoded in said encoded information portion, each subunit of user information in each error correction packet being constituted of bits encoded in bit areas in the encoded information portion which are displaced row-wise and column-wise from bit areas in which are encoded the bits constituting the other subunits in the error correction packet; and
an off-line, integrated positive identity verification apparatus, said apparatus comprising;
a scanner for reading the two-dimensional, high-density, damage-tolerant printed code contained in the identity document;
memory means for storing the multiple biometric information and text recovered from the printed code;
real-time biometric capture means for capturing biometric information from a person whose identity is to be verified;
processor means for comparing biometrics recovered from the two-dimensional, high-density, damage-tolerant printed code with real-time biometric information captured by said real-time biometric capture means to determine whether the real-time biometric information matches the biometric information recovered from the two-dimensional, high-density, damage-tolerant printed code; and
identity verification outcome notification means for indicating whether the real-time biometric information captured from the person whose identity is to be verified matches the biometric information recovered from the two-dimensional, high-density, damage-tolerant printed code.
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4. A system for providing positive off-line identity verification comprising the following elements:
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an identity document, said identity document bearing a two-dimensional, high-density, damage tolerant printed code encoding multiple biometric information and text, said code comprising;
a decode information portion encoding information to be used by the optical scanner to assist in reading and decoding the printed code;
a demarcation portion to demarcate a lateral extent of the printed code from an adjoining portion of the substrate;
row address portions encoding row address information to be used by the optical scanner to assist in reading and decoding the printed code, each such row address portion corresponding to a row comprising a clock track bit and a gray code; and
a two-dimensional encoded information portion wherein user information and error-correction information is encoded in bit areas disposed in a row-column arrangement, where said bit areas may be printed or blank to encode such information;
said error correction information comprising a plurality of error correction bit groups, each error correction bit group being separately calculated from a corresponding one of a plurality of error correction packets of subunits of user information encoded in said encoded information portion, each subunit of user information in each error correction packet being constituted of bits encoded in bit areas in the encoded information portion which are displaced row-wise and column-wise from bit areas in which are encoded the bits constituting the other subunits in the error correction packet; and
an off-line, integrated positive identity verification apparatus, said apparatus comprising;
a scanner for reading the two-dimensional, high-density, damage-tolerant printed code contained in the identity document;
memory means for storing the multiple biometric information and text recovered from the printed code;
real-time biometric capture means for capturing biometric information from a person whose identity is to be verified;
processor means for comparing biometrics recovered from the two-dimensional, high-density, damage-tolerant printed code with real-time biometric information captured by said real-time biometric capture means to determine whether the real-time biometric information matches the biometric information recovered from the two-dimensional, high-density, damage-tolerant printed code; and
identity verification outcome notification means for indicating whether the real-time biometric information captured from the person whose identity is to be verified matches the biometric information recovered from the two-dimensional, high-density, damage-tolerant printed code.
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Specification