Panasonic GPH5D - Manual (Page 23)

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D2 Board details
Figure 22
The Plasma AI (Adaptive brightness Intensifier) circuits analyze the video
program level for the distribution of dark and bright components. The upper and
lower eight bit video signals are memorized into two Plasma AI processors
IC9651 and IC9601. The Plasma AI circuits converts the 8 bit signal data to 10
bit signal data. The Flash memories contain the algorithms for the AI circuit. Two
AI processors are used to speed up the scanning process and control the
number of sustain periods. This increases the brightness and improves the
contrast ratio.