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. 28, 1984
Filed:
Dec. 07, 1981
Jack D Burton, Orlando, FL (US);
Exxon Research and Engineering Co., Florham Park, NJ (US);
Abstract
A data enhancement circuit for a facsimile receiver is provided. The circuit includes positive and negative slope detectors as well as a signal threshold detector. Incoming signals above the signal threshold and having a positive slope are considered black. Incoming signals above the signal threshold but with a negative slope are considered white. Incoming signals below the threshold are always considered white. Incoming signals above the signal threshold and with a negative slope having a slope magnitude less than a predetermined slope magnitude are considered gray. The circuit of the present invention reacts to high speed data and provides enhancement for images in a gray scale.