A DUAL-SCALER ARCHITECTURE FOR REDUCING VIDEO PROCESSING REQUIREMENTS

摘要

A video signal processor (300) includes an input port to receive an input video signal. The input video signal is having a first horizontal resolution and a first vertical resolution. The video signal processor (300) also includes a prescaler (310) to prescale the video signal, wherein prescaling (412) converts the input video signal at the first horizontal resolution and first vertical resolution to a prescaled video signal having a second horizontal resolution and a second vertical resolution. The video signal processor (300) additionally includes a frame buffer (314) coupled to the prescaler (310). The video signal processor (300) includes a horizontal scaler (318) to convert (224) the horizontal scale of the prescaled video signal from the second horizontal resolution to a third horizontal resolution and a vertical scaler (318) to convert (226) the vertical scale of the prescaled video signal from the second vertical resolution to a third vertical resolution.