ANSI INCITS ISO IEC 21118-2005 Information to be included in specification sheets Data projectors.pdf
《ANSI INCITS ISO IEC 21118-2005 Information to be included in specification sheets Data projectors.pdf》由会员分享,可在线阅读,更多相关《ANSI INCITS ISO IEC 21118-2005 Information to be included in specification sheets Data projectors.pdf(20页珍藏版)》请在麦多课文档分享上搜索。
1、INCITS/ISO/IEC 21118:20052008 /ISO/IEC 21118:2005, IDT) Information to be includedin specification sheets Data projectorsINCITS/ISO/IEC 21118:20052008(ISO/IEC 21118:2005, IDT)INCITS/ISO/IEC 21118:20052008 ii ITIC 2008 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. I
2、n accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Ad
3、obes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized fo
4、r printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. Adopted by INCITS (InterNational Committee for Information Technolog
5、y Standards) as an American National Standard. Date of ANSI Approval: 7/1/2008 Published by American National Standards Institute, 25 West 43rd Street, New York, New York 10036 Copyright 2008 by Information Technology Industry Council (ITI). All rights reserved. These materials are subject to copyri
6、ght claims of International Standardization Organization (ISO), International Electrotechnical Commission (IEC), American National Standards Institute (ANSI), and Information Technology Industry Council (ITI). Not for resale. No part of this publication may be reproduced in any form, including an el
7、ectronic retrieval system, without the prior written permission of ITI. All requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW, Washington, DC 20005. Printed in the United States of America INCITS/ISO/IEC 21118:20052008 ITIC 2008 All rights reserved iii Contents Page
8、 Foreword iv 1 Scope 1 2 Terms and definitions 1 3 Measuring methods and conditions 2 4 Items in specification sheets .2 Annex A (normative) Specification sheets .6 Annex B (informative) Measuring methods and conditions 10 Bibliography 15 INCITS/ISO/IEC 21118:20052008 iv ITIC 2008 All rights reserve
9、d Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through tech
10、nical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take pa
11、rt in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare Inte
12、rnational Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some
13、 of the elements of this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 21118 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 28, Office equipment. AMERICA
14、N NATIONAL STANDARD INCITS/ISO/IEC 21118:20052008 ITIC 2008 All rights reserved 1 Information to be included in specification sheets Data projectors 1 Scope This International Standard is applicable for information to be included in specification sheets about front projection type, fixed resolution
15、and light valve system, and data projectors having a computer signal input port capable of projecting the image outputs from a computer, VCR or other devices. NOTE 1 It also covers Data projectors that have a video signal input port as well as a computer signal input port. NOTE 2 It is not applicabl
16、e to units with a rear projection system or with a video input terminal alone. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 light valve a system which creates an optical image by electrical means using light from a separate source 2.2 tele
17、photo end the maximum focal length position of the zoom lens 2.3 wide-angle end the minimum focal length position of the zoom lens 2.4 resize process which converts an input image signal from one resolution and dot number to an image with a different resolution or dot number 2.5 lens shift a specifi
18、c function which enables changing the location of the image on the projection screen by moving the lens vertically (up/down) and/or horizontally (left/right) without moving the projector itself 2.6 image position(a measure of the affect of lens shift) the reference point is defined as the point on t
19、he projection screen that is intersected by the physical axis of the projection lens up image position = (Distance between top edge and reference point) down image position = (Distance between bottom edge and reference point) left image position = (Distance between left edge and reference point) rig
20、ht image position = (Distance between right edge and reference point) INCITS/ISO/IEC 21118:20052008 2 ITIC 2008 All rights reserved when image position is variable by lens shift feature, maximum and minimum positions should be specified example specification of image positions for a data projector w
21、ith lens shift: up/down 1:10 to 10:1, right /left 1:3 to 3:1 this means that the up image position with maximum lens shift upward is 10 times the up image position with no lens shift similarly the down image position with maximum lens shift downward is 10 times the down image position with no lens s
22、hift likewise, the right image position with maximum lens shift right is 3 times the right image position with no lens shift likewise, the left image position with maximum lens shift is 3 times the left image position with no lens shift note that if there is no lens shift in the horizontal direction
23、 right/left 1:1 would be the value given for right/left image position. 2.7 front projection system a projection system (of a projector) focuses an image onto a screen by projected light. The image from a light-reflecting screen is viewed from the projector side of the screen 2.8 rear projection sys
24、tem a projection system (of a projector) focuses an image onto a screen by projected light NOTE The image is viewed from the opposite side of the light transmitting screen. 3 Measuring methods and conditions Annex B (informative) shows measuring methods and conditions for the performance specificati
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ANSIINCITSISOIEC211182005INFORMATIONTOBEINCLUDEDINSPECIFICATIONSHEETSDATAPROJECTORSPDF

链接地址:http://www.mydoc123.com/p-436350.html