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PWM技术广泛应用在通信,电网功率控制及变换等诸多领域,对模拟信号进行数字编码,能满足数字化系统中数据处理的要求。在数字光处理技术中,PWM用于显示技术中的灰度等级实现,本文着重讨论了数字微镜DMD显示中各种PWM方式实现原理及性能,提出了改进的DMD显示模式,在同等灰度等级下有效的减少了视频数据的传输带宽。
PWM technology is widely used in many fields such as communication, power control and transformation of power network, and digitally encode analog signals to meet the requirements of data processing in digital systems. In the digital light processing technology, PWM is used to realize the grayscale level in the display technology. This article focuses on the principle and performance of various PWM modes in the digital micromirror DMD display, and proposes an improved DMD display mode. Level effectively reduce the video data transmission bandwidth.