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. 24, 2005
Filed:
Aug. 15, 2003
Derek B. Clegg, Redwood City, CA (US);
Derek B. Clegg, Redwood City, CA (US);
Apple Computer Inc., Cupertino, CA (US);
Abstract
A Font Quantization Engine receives layout data including font, font matrix, glyphs and position data. This received position data includes non-integer positions for the glyphs to be rendered. According to a tolerance that is either pre-specified, or selected at run time an appropriate quantization level is determined by the Font Quantization Engine. This quantization level and the fractional position data is then used to determine quantized positions for the glyphs. Once the quantized positions are determined, a rendering engine either renders the bitmaps for the glyphs, or retrieves cached versions of the bitmaps. In this manner, glyphs are positioned at non-integer locations, yet a different bitmap is not required for each possible non-integer location. This allows for both efficiency of operation and the use of higher quality bitmaps.