Y Gamma Off - Sony SS-HQ1 Application Notes

- SS-HQ1 Application Notes -
Ver.1.0.0 January 7, 2005
-Reference information-
The Y variable gamma curve characteristics can be checked using the PG function built into the DSP
(CXD3172AR) of the SS-HQ1 system. Output a Raster Horizontal Ramp (see Fig 12.5-2), referring to 12.5
"Pattern Generator (PG)". The curve characteristics can be checked as changes in the horizontal direction
luminance signal level through monitoring using an oscilloscope or waveform monitor.

10.4.3. Y Gamma OFF

You can select one of the lines in Fig 10.4-3 "Y gamma OFF" in order to make the camera-side output linear,
such as for image data processing using digital output, or in cases where the receiving monitor has a gamma
correction function.
160%
WCLIP=6 (120%)
110 [%]
YKNEESEL=7
YKNEESEL=6
0
500 [mVp-p] 1000 [mVp-p]
(VRB)
AD INPUT ( VIN - VRB )
Fig 10.4-3 Y Gamma OFF
When YKNEESEL (or UYKNEESEL) is set to 6[h] or 7[h], the curve becomes a "Y gamma OFF".
The line created by setting YGAMSEL (or UYGAMSEL) to 0[h] and setting YKNEESEL (or UYKNEESEL) to
5[h] will be the same as the line created by setting YKNEESEL (or UYKNEESEL) to 6[h].
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