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:
Aug. 10, 1976
Filed:
Oct. 21, 1974
Applicant:
Inventor:
Michael E Wilmer, Palo Alto, CA (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
178-6 ; 178-68 ; 178D / ;
Abstract
In a facsimile transmission device, means for reducing the bandwidth which includes a clock rate halving flip-flop and an odd-even line switching flip-flop which are logically combined to transmit every second data bit in each line in a vertical stagger between lines. At the receiving end the missing bits are filled in by an interpolation device according to the data in the vertically adjacent bits or the horizontally adjacent bits.