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AS0260CSSC28SUD20 датащи(PDF) 30 Page - ON Semiconductor |
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AS0260CSSC28SUD20 датащи(HTML) 30 Page - ON Semiconductor |
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30 / 83 page ![]() AS0260 DS Rev. G Pub. 5/15 EN 30 ©Semiconductor Components Industries, LLC, 2015. AS0260: 1/6-Inch 1080P High-Definition (HD) System-On-A-Chip (SOC) Digi- tal Image Sensor Figure 23: Gamma Reference Variables Against Brightness Metric ON Semiconductor recommends that cam_ll_start_contrast_bm is set at 100lux and cam_ll_stop_contrast_bm is set at 20lux, but the actual setting is at the discretion of the user. The recommended setting for cam_ll_llmode is 0x03. This allows the AS0260 to calculate both of the 19 knee point curves based on the user inputs, otherwise the user will have to program the 19 knee point curves. Gamma Curve Selection The AS0260 allows the user to select between the two-curve interpolation mode or fixed mode using either of the curves Table 7: Gamma Curve Selection Variable Name Function VAR(0x0F,0x0008) or (R0xBC08) ll_gamma_select 0x00= Auto curve select. The curves will interpolate based on settings of cam_ll_start_contrast_bm and cam_ll_stop_contrast_bm 0x01 = Contrast curve is only used 0x02 =Noise reduction curve is only used Cam_ll_inv_brightness_metric Bright Light Low Light Cam_ll_stop_contrast_percentage=25 Cam_ll_start_contrast_luma_percentage=80 Cam_ll_start_contrast_gradient=50 Cam_ll_stop_contrast_gradient=38 |
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