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STV3550 数据表(PDF) 23 Page - STMicroelectronics |
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STV3550 数据表(HTML) 23 Page - STMicroelectronics |
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23 / 144 page  Video Functional Description STV3550 23/144 The following table shows typical de-interlacing modes, according to the input format: Note: 720 pixels/line refers to ITU-R BT 601/656 video input standard resolution. 3.2.3 Regulation Modes The regulation modes of the input and output dataflows are based on the configurations of several blocks such as the SDIN, VTG, Display, and also depends on the selected synchronization modes. These regulation modes are then managed by a software layer that controls the various registers and includes algorithms to maintain the balance between the input and output dataflows. This service software layer allows various regulation modes as described below, selectable at the application level. When the VTG block is set in Slave mode, the PLL that line-locks the clock pixel to the Hsync signal is used to regulate the input and output dataflows. When the VTG block is set in Master mode, the following regulation modes are possible: 1. Frame Skip & Repeat Mode (used for Proscan mode) In this mode, depending on the speed variations between the input flow and the output flow, a frame is repeated or skipped from time to time (1 to 2 per second). 2. Field Skip & Repeat Mode (used for field rate up-conversion as 100 Hz) In this mode, depending on the speed variations between the input flow and the output flow, a field is repeated or skipped from time to time (1 to 2 per second). 3. Line Skip & Repeat Mode In this mode, certain lines are repeated or skipped during the VBI, depending on the delay between the input and output Vsync signals. 4. Pixel Skip & Repeat Mode In this mode; pixel periods are repeated or skipped during the horizontal or vertical blanking interval, depending on the delay between each Vsync signal. Table 8: De-interlacing and Scaling Modes INPUT Panels & Output modes 50 Hz interlaced Video 50 Hz interlaced movie 50 Hz n-interlaced game 60 Hz interlaced Video 60 Hz interlaced movie (3:2) 60 Hz interlaced movie (2:2) 60 Hz n-interlaced game VGA A+A*B*+B Or A+Med (A,B) Z out H 720>640 Z out V 576>480 A+B Z out H 720>640 Z out V 576>480 A+A*B*+B Or A+Med (A,B) Z out H 720>640 Z out V 576>480 A+A*B*+B Or A+Med (A,B) Z out H 720>640 Z out V 576>480 3:2pd Z out H 720>640 Z out V 576>480 A+B Z out H 720>640 Z out V 576>480 A+A*B*+B Or A+Med (A,B) Z out H 720>640 Z out V 576>480 XGA A+A*B*+B Or A+Med (A,B) Z in H 720>1024 Z in V 576>768 A+B Z in H 720>1024 Z in V 576>768 A+A*B*+B Or A+Med (A,B) Zin H 720>1024 Z in V 576>768 A+A*B*+B Or A+Med (A,B) Zin H 720>1024 Z in V 576>768 3:2pd Zin H 720>1024 Z in V 576>768 A+B Zin H 720>1024 Z in V 576>768 A+A*B*+B Or A+Med (A,B) Zin H720>1024 Z in V 576>768 |
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