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AR0330 数据表(PDF) 51 Page - ON Semiconductor |
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AR0330 数据表(HTML) 51 Page - ON Semiconductor |
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51 / 77 page  AR0330: 1/3-Inch CMOS Digital Image Sensor Sensor Frame Rate AR0330_DS Rev. U Pub. 4/15 EN 51 ©Semiconductor Components Industries, LLC,2015. Sensor Frame Rate The time required to read out an image frame (TFRAME) can be derived from the number of clocks required to output each image and the pixel clock. The frame-rate is the inverse of the frame period. fps=1/TFRAME (EQ 18) The number of clocks can be simplified further into the following parameters: • The number of clocks required for each sensor row (line_length_pck) This parameter also determines the sensor row period when referenced to the sensor readout clock. (TROW = line_length_pck x 1/CLK_PIX) • The number of row periods per frame (frame_length_lines) • An extra delay between frames used to achieve a specific output frame period (extra_delay) TFRAME=1/(CLK_PIX) ×[frame_length_lines × line_length_pck + extra_delay] (EQ 19) Figure 35: Frame Period Measured in Clocks frame_length_lines = active rows + VB |
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