Low-cost and high-quality method of outline font transformation
| Autor: | Hayashi Shigeo, Hiroshi Wada, Hiroko Sato, Kiriyama Norio, Shinji Wakisaka |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Engineering drawing
Computer Networks and Communications Computer science business.industry Pipeline (computing) Process (computing) General Physics and Astronomy law.invention Transformation (function) law Font Operational amplifier Affine transformation Electrical and Electronic Engineering business Computer hardware Word (computer architecture) Interpolation |
| Zdroj: | Electronics and Communications in Japan (Part II: Electronics). 79:84-92 |
| ISSN: | 1520-6432 8756-663X |
| DOI: | 10.1002/ecjb.4420790810 |
| Popis: | The outline font is used widely in operational amplifier (OA) equipment since the expansion and modification of a character can be realized with a high quality. The authors developed a system which realizes LSI with a low cost that can expand the outline font with a high quality, aiming at the installation on a low-cost note-type word processor. The proposed system executes the character correction, the affine transformation, the third-order Bezier curve interpolation, the outline generation, the painting, and the memory clear processings which are needed in the outline font expansion. The processings are divided into two blocks from the viewpoint of the processing time, and the blocks are processed by a pipeline. The vertical/horizontal scaling of the character is indispensable as a function of the word processor. The vertical/horizontal operation is included in the operation matrix of the affine transformation, which helps to suppress the increase of the processing time. To cope with the fluctuation of the line width due to the operation error, a powerful character correction function is installed in order to improve the quality. By those considerations of the architecture, all outline font expansion processings are installed on the single-chip LSI, which is realized on 8.5 mm × 8.5 mm, by CMOS 1.0-μm process. The expansion speed of 860 characters/s (64 × 64 dot) is realized. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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