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目前,市场上VCD播放机品牌较多,但就其伺服方式来说,有模拟和全数字两种方式,而以日本索尼公司的模拟机芯(现在出的VCD是数字机芯)和飞利蒲公司的全数字机芯为多。 1.日本索尼模拟机芯工作原理以新科VCD—330(1.1版本模拟机芯)为例其工作原理简述如下:该机芯的RF信号放大、聚焦、循迹、进给伺服、LD功率自动控制、缺损、镜像、FOK信号检测都是由CXA1782BQ来完成的。而CXD2500BQ是专
At present, there are many VCD player brands on the market, but in terms of its servo mode, there are two ways of simulating and all digital. In Japan, Sony’s analog movement (now VCD is a digital movement) Po company’s all-digital movement as much. 1. Japan Sony simulation movement to the new Division VCD-330 (1.1 version of the simulation movement) as an example The working principle is as follows: The movement of the RF signal amplification, focusing, tracking, feed servo, LD power automatic Control, defect, mirroring, FOK signal detection are done by the CXA1782BQ. The CXD2500BQ is specialized