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:
Feb. 05, 2013
Filed:
Sep. 27, 2007
Weiping Huang, Beijing, CN;
Hao Lin, Beijing, CN;
Zhangwei Meng, Beijing, CN;
Peking University Founder Group Co., Ltd, Beijing, CN;
Beijing Founder Electronics Co., Ltd., Beijing, CN;
Peking University, Beijing, CN;
Abstract
A method for rasterizing transparent pages scans each transparent page twice. The first scanning syntactically interprets a page description file of the transparent page, divides it into page blocks, and writes information of image element objects and transparency parameters into intermediate files. The second scanning reads the image element objects and the transparency parameters from the intermediate files and builds a page bitmap in blocks. A device for rasterizing transparent pages includes interpreting, dividing, file storing and building units. The interpreting unit implements syntactical interpretation. The dividing unit divides pages into transparent and nontransparent page blocks. The building unit implements rasterization according to the transparent or nontransparent page blocks, the information of image element objects and the transparent parameters to build a page bitmap in blocks. The methods and devices herein improve the efficiency of building a page bitmap and decrease memory utilization during generation of the page bitmap.