Samsung S5PC100 User Manual page 1443

VIDEO PROCESSOR
4.3.63 Video Processor Post-processing Color Space Conversion Coefficient Register
(PP_CSC_Y2Y_COEF, R/W, Address = 0xF010_ 01D4)
BT.601 to BT.709 Color Space Conversion Matrix
♦ Y709 = 1.0 * Y601 – 0.118188 * Cb601 – 0.212685 * Cr601
♦ Cb709 = 0.0 * Y601 + 1.018640 * Cb601 – 0.114618 * Cr601
♦ Cr709 = 0.0 * Y601 + 0.075049 * Cb601 + 1.025327 * Cr601
BT.709 to BT.601 Color Space Conversion Matrix
♦ Y601 = 1.0 * Y709 + 0.101579 * Cb709 + 0.196076 * Cr709
♦ Cb601 = 0.0 * Y709 + 0.989854 * Cb709 – 0.110653 * Cr709
♦ Cr601 = 0.0 * Y709 – 0.072453 * Cb709 + 0.983398 * Cr709
Above all equations are written without interface offsets of +16 for Luminance and +128 for Chrominance.
CSC module calculates above all equations without +128 offset for Chrominance, and generates final CSC
results with +128 offset.
In case of two Luminance equations, +16 offset is selectable by control register (PP_CSC_EN [1]).
If Y offset (+16) exists in matrix input data, the coefficient of above equations should be redefined.
PP_CSC_Y2Y_COEF
Reserved
PP_CSC_Y2Y_COEF
9.8-34
Bit
[31:12] Reserved, read as zero, do not modify
BT.601 to BT.709 (or BT.709 to BT.601) CSC
coefficient for Y to Y
[11] : Sign bit
[10] : Integer bit
[9:0] : Fraction bit
0x7FF : 1.999
...
0x400 : 1.0
[11:0]
...
0x0 : 0
0xFFF : - 0.0001
...
0xC00 : - 1.0
...
0x800 : - 2.0
S5PC100 USER'S MANUAL (REV1.0)
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