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上期向大家简单地介绍了一下Nokia 9500数字机的概貌,主要是其高频调谐、QPSK解调、电源及解复用等部分。由于CL9100中并没有视频编码部分,所以这部分工作由外部的专用编码器来完成。图21中的集成电路就是本机中专用的数字视频编码器,这是一块PHILIPS品牌的专用高性能IC,型号是SAA7124WP,采用PLCC的84脚封装,正是因为有了这块集成电路,才使得本机的视频输出部分功能强大,加之丰富的开放软件配合,可以任意调节视频输出信号中的各项参数,在操作菜单中可以选择复合视频、S端子、色差和基色(欧插方式)输出。这一点与现在流行的DM500S很相似,可以说,目前可玩性强的机器,除高清接收机外,就是这两种机器了,而在画质方面,当然9500S又是龙头老大了。注意:这块集成电路
Briefly introduced to you briefly about the Nokia 9500 digital machine overview, mainly its high-frequency tuning, QPSK demodulation, power and demultiplexing and other parts. Since CL9100 does not have a video encoding part, so this part of the work by the external encoder to complete. The integrated circuit in Figure 21 is a dedicated digital video encoder in this machine. This is a special high-performance IC of the PHILIPS brand, SAA7124WP. It adopts 84-pin package of PLCC, precisely because of this integrated circuit Making the machine’s video output part of a powerful, coupled with a wealth of open software, you can freely adjust the video output signal of the various parameters in the operating menu, you can choose composite video, S-Video, color and color (European plug) output . This is very similar to the current popular DM500S. It can be said that currently the playable machines, except HD receivers, are the two machines, and of course the 9500S is the leading player in terms of image quality. Note: this integrated circuit