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十四、画中画电路(PI板) 实现画中画的关键是把子画面在水平和垂直方向上同时压缩为原来图像的1/9或1/16,在视频电子开关切换控制下,把子画面“镶嵌”在主画面内,以便观看或监视其他电视频道及录像机等视频信号源传送的节目。信号流程解析如下: BT板AV端子进入的外部视频信号经XPP1B②脚、RP_(05)、CP加到子画面AV/TV信号选择开关
Fourteen, PIP circuit (PI board) PIP to achieve the key is the sub-picture in the horizontal and vertical compression while the original image 1/9 or 1/16, under the control of the switch in the video electronic switch, the The sprites are “inlaid” in the main display for watching or watching programs delivered by video sources such as other TV channels and recorders. Signal flow analysis is as follows: BT board AV terminal into the external video signal through XPP1B ② feet, RP_ (05), CP added to the sub-screen AV / TV signal selector switch