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:
Jun. 18, 1996
Filed:
Feb. 25, 1993
Timothy J Hill, San Francisco, CA (US);
Robert M Marsh, Berkeley, CA (US);
Jesse C Newcomb, Mountain View, CA (US);
Document Technologies, Inc., Sunnyvale, CA (US);
Abstract
A system for converting a high-resolution bitonal bit map representation of a document to a lower-resolution pixel representation for display. A special subset of the high resolution output is assigned special meanings by codes which are used to produce a real time video signal with higher bandwidth to enhance the resolution and readability of the displayed image on a lower resolution display. This is accomplished by splitting each coded pixel into two or more 'twixels'. The twixels produced from pixels which are not part of the special subset have the same codes as the corresponding original pixels. The twixels produced from pixels which are part of the special subset have special codes which, when displayed, duplicate certain predetermined high resolution features of the original bitonal pixel-code information on a display.