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背投电视是近来出现的电视新品种。背投电视以其屏幕大、伴音好、超豪华而吸引了消费者的目光。由于背投是个“新生事物”,人们对背投知之不多,如果盲目地追赶时尚,说不定会买个麻烦回家,用得更爽不起来。下面从消费者的角度谈谈这一问题,目的是希望消费者能“买得放心,用得舒心”。 1.一定要了解背投的基本知识 背投与普通彩电最大的区别在于接收电视信号后的处理上。普通电视收到视频信号后通过显像管直接显示到屏幕上,而背投则将接收到的信号,通过电路处理后,再经会聚电路和数字滤波电路优化处理,将其传输给并排放置的红、绿、蓝三只单色投影管。三只投影管产生的电视图像分别经过透镜放大,再经反射镜反射到投影屏上合成一幅完整的大屏幕彩色图像。背投电视的投
Rear projection television is a new breed of television that has emerged lately. Rear projection TV with its large screen, sound good, super luxury and attract the attention of consumers. As the rear projection is a “new thing,” people do not know much about the rear projection, if blindly catch up with fashion, maybe will buy a trouble to go home, use more cool not up. The following from the perspective of consumers to talk about this issue, the purpose is to hope that consumers can “buy at ease, with comfortable.” 1. Be sure to understand the basic knowledge of rear projection Rear projection and the biggest difference between ordinary TV is to receive the television signal processing. Ordinary television receives the video signal through the CRT display directly to the screen, while the rear projection will receive the signal through the circuit processing, and then through the convergence circuit and digital filtering circuit optimization processing, to be placed side by side to the red, Green, blue three monochrome projection tube. Three projection tube television images produced by the lens to zoom, and then reflected by the mirror to the projection screen synthesis of a complete large-screen color images. Rear projection TV cast