VESA GTF Standard-1999.pdf

上传人:first2 文档编号:100193683 上传时间:2021-06-13 格式:PDF 页数:32 大小:135KB
返回 下载 相关 举报
VESA GTF Standard-1999.pdf_第1页
第1页 / 共32页
VESA GTF Standard-1999.pdf_第2页
第2页 / 共32页
VESA GTF Standard-1999.pdf_第3页
第3页 / 共32页
VESA GTF Standard-1999.pdf_第4页
第4页 / 共32页
VESA GTF Standard-1999.pdf_第5页
第5页 / 共32页
亲,该文档总共32页,到这儿已超出免费预览范围,如果喜欢就下载吧!
资源描述
VESA Generalized Timing Formula Version 1.1 Copyright 1996-1999 Video Electronics Standards Association Page 1 of 32 VESA GTF Standard Video Electronics Standards Association 860 Hillview Court, Suite 150 Tel: (408) 957-9270 Milpitas, CA 95035 Fax: (408) 957-9277 Generalized Timing Formula Standard Version: 1.1 September 2, 1999 Purpose The VESA Generalized Timing Formula is a standard method for generating general-purpose display timings. While bringing standardization, it does not restrict the market to fixed, pre-defined formats or refresh rates, and thus allows differentiation within a standardized environment. Summary VESA has defined a standard method by which new formats and timings can be generated. This will allow much greater flexibility in the choice of refresh rates and pixel formats than currently available with existing discrete monitor timings. GTF describes a computational method that will provide standardization, and yet also enable new features, such as user defined image resolution and low-cost, automatic self-alignment of display devices, to be added to graphics systems and monitors, Version 1.1 explains the usage of GTF parameters for a Secondary GTF curve; a concept called “Secondary GTF”. VESA Generalized Timing Formula Version 1.1 Copyright 1996-1999 Video Electronics Standards Association Page 2 of 32 Intellectual Property Copyright 1994, 1995, 1996, 1999 Video Electronics Standards Association. All rights reserved. While every precaution has been taken in the preparation of this standard, the Video Electronics Standards Association and its contributors assume no responsibility for errors or omissions, and make no warranties, expressed or implied, of functionality or suitability for any purpose. Trademarks All trademarks used within this document are the property of their respective owners. VESA is a registered trademark of the Video Electronics Standards Association. Patents VESA proposals and standards are adopted by the Video Electronics Standards Association without regard to whether their adoption may involve any patents or articles, materials or processes. Such adoption does not assume any liability to any patent owner, nor does it assume any obligation whatsoever to parties adopting the proposals or standards documents. Support Clarifications and application notes to support this standard may be written. To obtain the latest standard and any support documentation, contact VESA. If you have a product that incorporates GTFTM, you should ask the company that manufactured your product for assistance. If you are a manufacturer, VESA can assist you with any clarification you may require. All comments or reported errors should be submitted in writing to VESA using one of the following methods. Fax: (408) 957-9277, direct this note to Technical Support at VESA Email: supportvesa.org Mail: Technical Support Video Electronics Standards Association 860 Hillview Court, Suite 150 Milpitas, CA 95035 VESA Generalized Timing Formula Version 1.1 Copyright 1996-1999 Video Electronics Standards Association Page 3 of 32 Acknowledgments This specification would not have been possible without the valuable contributions and support from the following members of the GTF work group: Andy Morrish (GTF Work Group Leader) National Semiconductor Dave Eagle IBM Ricky Jackson IBM Hans van der Ven Panasonic Bob Myers Hewlett-Packard Anders Frisk ICL Tom Ryan SciTech Kendall Bennett SciTech Joe Goodart Compaq Paul Doyle Sony Version 1.1 Anders Frisk (GTF Document editor, work group leader) Nokia Hans van der Ven Panasonic Joe Goodart Dell Alain dHautecourt ViewSonic GTF EXCELTM SPREADSHEET As part of this standard, a companion EXCELTM V4.0 spreadsheet is available from the VESA FTP site (GTF_V1R1.XLS), or from the VESA office. This spreadsheet illustrates the GTF method and allows manual computation of timing parameters and demonstration of the computation method. This written specification documents the mathematical methods behind the spreadsheet in order to demonstrate how GTF can be programmed into software. In case of any confusion or dispute regarding interpretation or calculation of any of the GTF variables in any implementation, the released version of GTF spreadsheet shall be used as the definitive calculation method to demonstrate correct computation of the parameters. REVISION HISTORY Version 1.0 Revision 1.0, December 8, 1996 Initial release of GTF Standard Version 1.1 Secondary GTF curve concept defined. VESA Generalized Timing Formula Version 1.1 Copyright 1996-1999 Video Electronics Standards Association Page 4 of 32 TABLE OF CONTENTS INTELLECTUAL PROPERTY.2 GTF EXCELTM SPREADSHEET .3 REVISION HISTORY.3 1. INTRODUCTION.5 2 TERMS AND DEFINITIONS.6 2.1 TIMING PARAMETERS.6 2.2 SYNC PULSE POSITION.7 2.3 SYNC PULSE POLARITY.7 2.4 BASIC HORIZONTAL BLANKING DUTY CYCLE FORMULA.8 2.5 ACCURACY OF TIMING PARAMETERS.10 2.6 EXTENDED HORIZONTAL BLANKING FORMULA.11 3 DEFAULT PARAMETER VALUES.14 4 SYSTEM VARIA
展开阅读全文
相关资源
猜你喜欢
相关搜索
资源标签

当前位置:首页 > 其他


版权所有:www.WDFXW.net 

鲁ICP备14035066号-3