Multi-Sync Video/Data Projector

Abstract

ABSTRACT NEC has developed the Multi-Sync Video/Data Projector which responds to growing requirements for large screen display. The NEC Multi-Sync System is capable of handling signals from various sources such as Personal Computers,HDTV,and other video generating equipment. Therefore, this Video Projector is so designed to automatically lock to horizontal frequencies from 15kHz to 36kHz and vertical frequencies from 38Hz to lOOHz.The NEC Digital Convergence System is the culmination of numerous technologies implemented in this projector. With this combined technology the convergence can be adjust with super accuracy by using 117 (13H*9V points) independent fine tunable adjusting points on a screen.The NEC Automatic Convergence System has also been developed which adjusts convergence automatically within 5 minutes with an accuracy of 0.3 line of scanning lines. 1. INTRODUCTION Recently there has been increasing demands to display various data, graphics and images from computers and other video sources on a large screen for various occasions such as training, education, conference etc.To meet such requirements, Scan type video projectors have been developed by several manufacturers which can lock to various scanning frequencies. However, due to a variety of scanning frequencies and active area among various equipments, it has been quite difficult to achieve optimum width and height with optimum convergence.To provide solutions for these practical and potential problems, NEC has developed digital technologies such as Digital Control and Digital Convergence.With these latest digital technologies, our Multi Sync Video and Data Projector can provide optimum picture quality with a variety of input signals from various equipment .