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. 05, 1978
Filed:
May. 16, 1977
Applicant:
Inventor:
Frederic P Fischer, II, Williamsville, NY (US);
Assignee:
Calspan Corporation, Buffalo, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358284 ; 358294 ;
Abstract
The quality of and/or transmission speed for fingerprint facsimiles transmitted over telephone lines are improved by image enhancement prior to transmission. Image enhancement is achieved by using a multi-element photodetector array and simultaneously processing the signals from the component elements of the multi-element photodetector to produce a binary video output indicating whether the center of the scan is on a ridge or a valley portion of the fingerprint.