The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 1985
Filed:
Jan. 17, 1983
Roger J Kuhns, Lincoln, MA (US);
Other;
Abstract
A reliable, precise, inexpensive, portable digitizer is provided for receiving an identification medium having a fingerprint thereon, including at least one fingerprint discontinuity associated therewith. The exact position of the discontinuity with respect to the edges of the medium is then encoded by the digitizer by rotating an elongated scale coupled to the base of the digitizer until the fiducial line on the scale is coincident with the discontinuity. A reading is thereafter recorded proportional to the position of the discontinuity along the elongated scale and a reading is also recorded indicative of the angle of the elongated scale, with respect to the base member. These readings are recorded upon the medium, and since the medium has an exact position with respect to the base member, the recorded data is proportional to the position of the discontinuity relative to the dimensions of the card. The above procedure is repeated during verification of the authenticity of the medium, and if the readings match, the medium is deemed authentic.