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:
Nov. 04, 1997
Filed:
Feb. 05, 1996
Martin Potucek, Rochester, NY (US);
George Anthony Hadgis, Spencerport, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A scanner having a photosensitive scanning array includes a timing generator having (a) a first state wherein pixel clock signals with a predetermined frequency are produced and (b) a second state wherein a D.C. restore clock signal with a frequency that is 'N' times slower than the predetermined frequency is produced. The timing generator controls the rate of sampling the scanning array to acquire image data by producing a series of analog image signals containing (a) a video component which is characteristic of a density pattern of a scanned image and (b) a D.C. offset component which is characteristic of the scanning array. The timing generator also controls the rate of sampling the scanning array to acquire an analog signal containing only the D.C. offset component. A D.C. restore calculates an output signal containing only the video component of the series of analog image signals containing the video component and the D.C. offset component. The timing generator is selectively switched to its first state during acquisition of the image data, and to its second state during acquisition of the analog signal containing only the D.C. offset component.