Method and apparatus for document conversion with font metrics adjustment for format compatibility

US9471550B2 · kind B2 · utility

Assignee

• LinkedIn Corporation · US

Inventors

• Jonathan Boutelle · San Francisco, US
• Kapil Gupta · Sunnyvale, US
• Michael Brown · San Diego, US
• Akash Agrawal · San Jose, US
• Christopher S. Ahlers · San Francisco, US
• Jeba Singh Emmanuel · Mountain View, US
• Ujjwal Singh Grover · New Delhi, IN

Key dates

• Filing date: Oct 16, 2012
• Grant date: Oct 18, 2016
• Expiry date: Oct 16, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F40/154
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Method and apparatus for converting a document from a fixed-layout format (e.g., Microsoft Office, Adobe PDF) into a non-fixed layout format (e.g., HTML) portable to different platforms (e.g., desktop computers, tablet computer, smart phones) operating different operating systems (e.g., Microsoft Windows, Apple OS X) and different web browsers (e.g., Microsoft Internet Explorer, Apple Safari, Mozilla FireFox). In one stream, fonts are identified, extracted, and processed to enhance compatibility with the portable format. In another stream, textual content is extracted and processed to enhance compatibility and images are taken of non-textual content. These images are used as backgrounds in the output document, over which the textual content is rendered in the appropriate fonts, with sizing, spacing, positioning and/or other characteristics matching or closely approximating that of the original document. Error detection is applied by comparing images of the original document to corresponding images of the output document, to ensure high fidelity.