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1. 发明授权

US6097447A Digital deflection control system in projection TV 失效
标题翻译：投影电视数字偏转控制系统
公开(公告)号：US6097447A
公开(公告)日：2000-08-01
申请号：US288557
申请日：1999-04-09
申请人： Jung Tae Kim , Deuk Young Kwon , Ki Hwan Kim , Hoe Jik Kim , Kwang Hoon Park
发明人： Jung Tae Kim , Deuk Young Kwon , Ki Hwan Kim , Hoe Jik Kim , Kwang Hoon Park
IPC分类号： H04N3/16 , H04N3/233 , H04N3/22
CPC分类号： H04N3/2335
摘要： A digital deflection control system in a projection TV is provided which digitally integrates the configuration for converting the digital horizontal deflection signal outputted from the DCS into an analog signal to be applied to the deflection coil as an input, thereby reducing the production cost and realizing small-size product. The digital deflection control system includes an EEPROM for storing vertical and horizontal deflection seed data for R, G, B color signals, a CPU for loading each seed data from the EEPROM and performing the first interpolation for the horizontal deflection data, a digital conversion circuit for performing the second interpolation for the vertical deflection data among the data first-interpolated by the CPU, a digital deflection control for performing the third interpolation for the horizontal deflection data among the data second-interpolated by the digital conversion circuit, a D/A converter for outputting the data third-interpolated by the digital deflection control as an analog signal in the form of step wave, and a filter for removing high frequency component from the signal in step waveform outputted from the D/A converter.
摘要翻译：提供一种投影电视机中的数字偏转控制系统，其将从DCS输出的数字水平偏转信号转换为用于将作为输入的偏转线圈施加的模拟信号进行数字积分，从而降低生产成本并实现小型化尺寸产品。数字偏转控制系统包括用于存储用于R，G，B彩色信号的垂直和水平偏转种子数据的EEPROM，用于从EEPROM加载每个种子数据并执行水平偏转数据的第一内插的CPU，数字转换电路用于对由CPU首先内插的数据中的垂直偏转数据执行第二内插;数字偏转控制，用于对由数字转换电路进行第二内插的数据中的水平偏转数据执行第三内插，D / A 转换器，用于将通过数字偏转控制第三插值的数据作为步进波形式的模拟信号输出;以及滤波器，用于从D / A转换器输出的步进波形中的信号中去除高频分量。

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