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:
May. 30, 1978
Filed:
Dec. 29, 1976
Amitabh Saran, Cypress, CA (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A binary video signal having a raster scan format is fractionally difference modulated to limit the inter-scan line propagation of decoding errors. The fractionally difference modulated video signal is then encoded using different end-of-line message codes to distinguish between unterminated white runs of difference modulated and unmodulated picture elements, thereby providing a scan line-by-scan line indication of whether the picture elements are difference modulated or not and avoiding the need for distinguishing between the difference modulated and unmodulated picture elements while converting black terminated white runs and non-terminating black picture elements into run length message codes and individual message bits, respectively.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile