DS_S1D2502A01 Datasheet, PDF (40/57 Pages) Samsung semiconductor – VIDEO AMP MERGED OSD PROCESSOR FOR MONITORS

Preliminary
VIDEO AMP MERGED OSD PROCESSOR FOR MONITORS
S1D2502A01
• Character Height
Whereas the purpose of VZ[1:0] (Vertical Character Height) is to adjust the character's absolute size, the
purpose of CH[5:0] (Character Height) is to output a uniformly sized OSD even if the resolution changes. To
express a Character Height of CH = 18 ~ CH = 63 after receiving CH[5:0]'s input from the frame control
register-1, decide on each line's repeating number (Standard Height CH = 18) and repeat the lines.
The following Figure shows two examples of a height-controlled character. height control is carried out by
repeating some of the lines.
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2
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5
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18
Standard Font(12*18)
Standard font
in high vertical resolution
Height-controlled font
: added
line
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18
Standard Font(12*18)
Standard font
in more higher vertical resolution
: added
line
Height-controlled font
Figure 16. Character Height
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