Fingerprint identification system
Patent 4641350 Issued on February 3, 1987. Estimated Expiration Date: 
May 17, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 17, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3200701 3201961 3383657 3527535 3581282 3584958 3905045 Electro-optical method and apparatus for making identifications Real time fingerprint recording terminal Finger identification InventorApplicationNo. 06/611131 filed on 05/17/1984US Classes:382/124, Using a fingerprint356/71, DOCUMENT PATTERN ANALYSIS OR VERIFICATION382/209Template matching (e.g., specific devices that determine the best match)ExaminersPrimary: Boudreau, Leo H.Assistant: Mancuso, Joseph Attorney, Agent or FirmInternational ClassesG07C 9/00 (20060101)G06K 9/00 (20060101) AbstractA fingerprint identification system includes a scanner, a memory for storing data representative of fingerprints received from the scanner, means for comparing newly received data to reference data, and means for determining the degree of distortion and misregistration present in the new data relative to the reference data. The new data and the reference data are stored in arrays. The arrays are compared by a method which includes dividing the reference array into sub-arrays and comparing the elements of each sub-array with the elements of a number of sub-arrays of the new data array. This technique allows the reference array to be stretched and/or compressed to account for distortion and/or misregistration in the new data array. Apparatus designed to insure nominal finger registration and to protect the optical surface of the scanner from dirt, grease and other contamination is also provided. | |
