image scaler


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image scaler

A circuit that converts the resolution of a video signal to a resolution that is higher or lower. For example, an HDTV set can increase (scale up/upconvert) the standard 480-line resolution from a DVD or TV channel to a 720 or 1080-line resolution by filling in the missing lines via software. Although this may enhance the image, it is not turning it into true high-definition content, which must have a minimum of 720 lines of resolution.

Conversely, the image scaler in an HDTV set that displays only 720 lines of resolution (720p) can reduce (scale down/downconvert) a 1080-line HD signal to fit the screen's native 720 lines. See HDTV and LVDS.


Flat Panel Monitor
This diagram of a typical flat panel monitor shows where the image scaler fits. (Redrawn from original courtesy of Analog Devices, Inc.)
References in periodicals archive ?
This is the most recent of several design wins for Silicon Image's SiI 851 monitor controller, which integrates industry-leading PanelLink DVI technology with a high-performance image scaler in an advanced, cost-effective solution for display OEMs.
Having worked successfully with Harris on its first-generation flat-panel XGA LCD monitor reference designs (Maui(TM) EV4 and Maui(TM) FRC EV4), Genesis again turned to Harris Semiconductor for a complete analog front-end solution capable of delivering digitized output to its gmZ2 image scaler.
The new CAST products sourced from Trilinear will include video and image decoders, image scalers, a video deinterlacer, graphics controllers, various development platforms, and more.