參數(shù)資料
型號: CXD2457R
廠商: Sony Corporation
英文描述: Timing Generator for Progressive Scan CCD Image Sensor
中文描述: 時(shí)序發(fā)生器傳感器逐行掃描CCD圖像
文件頁數(shù): 14/37頁
文件大?。?/td> 380K
代理商: CXD2457R
– 14 –
CXD2457R
D14
FS
Detailed description
0: Normal operation
1: FS mode
In order to increase the frame rate, a certain portion of the captured image of CCD can be cut out
by performing high-speed sweep.
In FS mode, high-speed sweep is performed for the V registers of the entire image (period Z)
after FRI input. Next, high-speed sweep is performed again for only the desired period (period X)
after generating the XSGA pulse. Then, after performing normal V transfer and outputting the
effective signal (period Y), high-speed sweep is performed for the entire image again by inputting
FRI at the desired timing. This makes it possible to take only the desired portion in the V
direction, thus effectively increasing the frame rate.
Operation is fixed during period Z, with 22 lines swept every 1H and repeating over a 36H period.
During period X, first XSGA is generated, then sweep operation starts. This period is set in serial
data FVFS (system setting data: D21 to D26) in HRI units.
Be sure to set FINE = 0 in this mode.
Set to 0.
FRI
V2A
36H
(Fix)
Z
X
X
Y
Z
1068
Timing chart
Reset by FRI after
normal transfer
When the frame rate is increased as the
vertical effective signal Y line (example)
Sweep variable period (period X)
Effective signal period (period Y)
Sweep fixed period (period Z)
Y
Set by FVFS
D15
to
D16
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