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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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VX6854LC 데이터시트(PDF) 58 Page - STMicroelectronics |
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VX6854LC 데이터시트(HTML) 58 Page - STMicroelectronics |
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58 / 114 page  Video timing VX6854LC 58/114 DocID027110 Rev 2 Figure 17. Scaler quality Down scaler factor The down scaler factor is controlled by an M/N ratio, scale_m is >= 16 and scale_n is fixed at 16. scale_m is in the range 16 to 129. This single down scale factor is used by both the horizontal and vertical scalers. The scaler acts upon the addressed region of the array which is determined by the x_addr_start, y_addr_start, x_addr_end and y_addr_end registers. If the down scale factor is greater than 1.0, then the derating factor must also be set greater than 1.0. Refer to Section 6.2.4: Derating on page 63 for details. Note: The derating can be set to a minimum value, for example if op_pix_clk_div=10, setting vt_pix_clk_div=9 would meet this requirement. Figure 18. Example image full scaled by a downscale factor of 2 Pixel array output Bayer sampled scaling Co-sited sampling down_scale_factor = scale_m scale_m scale_n 16 = Downscale by 2 Full (Horizontal and Vertical) Scaling Raw Bayer Image |
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