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. 19, 1978
Filed:
Mar. 07, 1977
Applicant:
Inventors:
Arthur M Walsh, Pittsford, NY (US);
Frederick R Ruckdeschel, Webster, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358298 ; 358283 ;
Abstract
An apparatus in which an original document is reproduced. The original document is scanned to determine the tonal graduations thereof and a signal generated indicative thereof. An image of the original document having a plurality of half-tone dot spacial frequencies is formed. Each half-tone dot spacial frequency is selected from a plurality of selected spacial frequencies corresponding to a pre-determined signal range. In this manner, the selected half-tone dot spacial frequencies are a function of the signal indicating the tone graduations of the original document.