Silicon Image's patented adaptive scaler is optimized for standard-definition as well as for high-definition and ultra high-definition resolutions up to 4Kx2K. The scaler supports scaling in both up and down directions.
Video scaling is required to adjust the original resolution of a video source to the size of a display or to allow the viewer to zoom into an image. The typical SD video resolution provided by a DVD player or set-top box is 480i (NTSC) or 576i (PAL). After deinterlacing the video to a progressive format (480p/576p), this resolution has to be upscaled to the resolution of the DTV (720p or 1080p) or computer display. Scaling is also required to adapt 720p video resolution to a 1080p display and vice versa. In a video SoC for a Blu-ray, DVD player or set-top box the adaptive scaler IP core is placed in the digital video processing chain behind a video decoder (such as Silicon Image's H.264/MPEG-2/VC-1 cineramIC video decoder IP core) or as part of a video output unit which sends the video content to the display. In a DTV SoC, the adaptive scaler IP core has the task to convert any incoming video and still image to the native display resolution.
This latest scaling engine produces optimal picture quality regardless of image content. The vertical and horizontal scaling engine preserves detail in the original image and it includes features such as chroma up-sampling error correction and optional sharpening capability. The keystone correction feature avoids trapezoid-like distortion of a non-centered projector. The sophisticated second-generation panorama (non-linear horizontal) mode offers a smoother conversion of a 4:3 aspect ratio input image to fill the standard 16:9 widescreen aspect ratio of today's DTVs. Building on previous successful scaling technologies, the adaptive scaler preserves image detail in video content while suppressing ringing artifacts in graphics content.
Supports up-scaling and down-scaling
Supports SD and HD up to 4Kx2K to dramatically improve resolution quality