Abstract:

A video processing system may implement a video scaling algorithm using interpolation based on polyphase filtering. A video or graphics scaler may be utilized to scale luma, chroma, and/or alpha information in a video image. The scaler may comprise a first polyphase sub-filtering with zero phase shift that generates an in-phase filtered output from an input video image and a second polyphase sub-filtering that generates an out-of-phase filtered output from the input video image. The video scaler may also comprise an interpolator that may generate a scaled video image based on the generated in-phase and out-of-phase filtered outputs and a scaling factor. The scaling factor may be determined based on an input video size (M) and a desired output video size (N). The interpolation of the generated in-phase and out-of-phase filtered outputs in the video scaler may be implemented by utilizing a Farrow structure.

Description:

FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

[Not Applicable]

MICROFICHE/COPYRIGHT REFERENCE

[Not Applicable]

FIELD OF THE INVENTION

Certain embodiments of the invention relate to video processing. More specifically, certain embodiments of the invention relate to a system and method for implementing graphics and a video scaling algorithm using interpolation based on symmetrical polyphase filtering.

BACKGROUND OF THE INVENTION

In video applications there may be a large number of video and/or graphic display formats that may be supported by many different vendors. These different video display formats may differ, at least in part, in their horizontal resolution, vertical resolution, and/or aspect ratio, for example. The selection of a particular video display format may depend on user and/or vendor specification. The use of a particular video display format may also be determined by standard specifications, for example. In order to enable system co ...

Display device and method for manufacturing thereof