Philips LC4.8A Service Manual page 97

Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.6.3 Noise Reduction and Noise Estimator
The noise reduction function is a sophisticated successor of the
noise reduction module from the PICNIC-chip, also known as
"LIMERIC".
Besides the noise reduction part, the Columbus noise
reduction module also comprises a noise estimator. This noise
estimator (the LORE-noise estimator) is a new design with the
ambition of more accuracy and with less control complexity
than the existing noise estimators.
9.7
Figure 9-5 Block diagram scaler part
LC4.8A AA
Video: Scaler Part (Diagram B7, B8 and B9)
The Genesis gm1501 Scaler is a dual channel graphics and
video processing IC for LCD monitors and televisions
incorporating Picture in Picture, up to SXGA output resolutions.
The Scaler controls the display processing in an LCD TV, e.g.
like the deflection circuit in a CRT-based TV. It controls all the
view modes (e.g. like "zooming" and "shifting"). Features like
PC (VGA) or HD inputs, are also handled by this part.
9. EN 97