Mitsubishi Electric KD Series User Manual page 21

2-2 Principal technology of CIS
【 Data output timing 】
Line frequency
LED turn-ON
Internal read-out period
Storing period
Read-out period
Digital output
【 Data read-out and Clock frequency 】
It takes time to read all pixels
Image
data
1 st pixel
TM-XG537C
【 Data output timing 】
There is a latency to read-out a line data. The N lines
latency is designated from LED turn-ON as described on
the left drawing.
1) Sensor converts the information by light into the
information by electric. (1 line)
2) Period to read out the analog data of sensor pixels
(1 line)
3) Period to convert the analog data into digital data and
N lines latency
rearrange the data in a line (1 line)
4) Period to process internal image processing
Data read-out period
(3 lines ~10 lines)
Additionally, line scan frequency of this product is limited by
internal pixel clock frequency and pixel quantity. Because
the pixel read-out is synchronized by pixel clock.
For instance, in the case of 60 MHz as a pixel clock
Image
frequency and 7,296 pixels as a pixel quantity, the
data
minimum line scan period is calculated as follows;
Next line
7,296 (pixels) / 60 (MHz) = 121.6 μsec
Last pixel
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