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Partial Scan Mode - Sony XCL-U100 Technical Manual

Digital video camera module.
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3.2.3.

Partial scan mode

This mode increases the frame rate by dividing the
whole video period vertically, reading only the
necessary lines as the actual video, and transferring
unnecessary lines at high-speed. You can set the area
between the starting and ending positions for reading to
a minimum of 240 lines.
Partial scan
Example: PARTIAL 1 500 739
FVAL
LVAL
DVAL
Video output
(lines)
starting position for display ≤ 32
exposure time ≤ T1
T1 = ending position for display + 31 + ROUNDUP ((1217 - ending position for display) / 8,0) (H)
T3 = T1 - number of lines displayed
starting position for display > 32
exposure time ≤ T1
T1 = number of lines displayed + 62 + ROUNDUP ((starting position for display - 32) / 8,0) + ROUNDUP ((1217 -
ending position for display) / 8,0) (H)
T3 = T1 - number of lines displayed
<ROUNDUP functions>
Round up the value for the function, ROUNDUP (x,0) = x, to the nearest whole number.
Example: ROUNDUP (50.0,0) = 50 / ROUNDUP (50.3,0) = 51
16
3. Camera mode
High-speed transferring period
Normal transferring period
(Effective video output)
Whole
area
High-speed transferring period
T3
240 H (number of lines displayed)
1 H
299
501
502
1600 CL 320 CL
Starting position for display
T1
739
740
501
Ending position for display
1H = 53.333 µs
1 CL = 27.777 ns

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