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在有线电视综合业务网中,机上变换盒实际上是一台专用的微机,并被认为是家用信息终端。美国Power TV公司开发的,用于由RISC型微处理器控制的机上变换盒的操作系统,可以把从视频服务器接收来的活动图像数据和用户界面用图形数据组合起来,以NTSC或PAL方式显示在电视机的屏幕上。这种操作系
In the cable television integrated business network, on-board conversion box is actually a dedicated computer, and is considered to be home information terminal. The operating system developed by Power TV Corporation of the United States for an on-box converter controlled by a RISC-type microprocessor can combine moving picture data received from a video server and graphic data of a user interface to display in NTSC or PAL mode On the TV screen. This kind of operating system