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| 型號： | OV6620 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | SINGLE-CHIP CMOS CIF COLOR DIGITAL CAMERA |
| 中文描述： | 單芯片CMOS到岸價(jià)格彩色數(shù)碼攝像機(jī) |
| 文件頁數(shù)： | 16/31頁 |
| 文件大?。?/td> | 341K |
| 代理商： | OV6620 |
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OV6620/OV6120
16
Version 1.11
14 May 1999
SINGLE IC CMOS COLOR AND B/W DIGITAL CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Advanc ed Information
Preliminary
Figure 6. Frame Exposure Timing
FREX
DATA
OUTPUT
HSYNC
VSYNC
ARRAY
PRECHARGE
Black Data
Invalid Data
Valid Data
1 Frame (292 line)
Precharge begin at rising edge of HSYNC
Array Exposure Period T
ex
Array Precharge
period T
pr
T
set
Next Frame
Mechanical shutter off
Head of Valid data
(8 line)
T
in
T
hs
T
hd
HREF
Note:
T
pr
= 292* 4 * T
clk
, T
clk
is internal pixel period. For default 17.73 MHz, T
clk
=112 us. If CLK[5:0] set to divided number, T
clk
will
increase accordingly.
T
ex
is array exposure time which is decided by external master device.
T
in
is uncertain time due to using
HSYNC
rising edge synchronize
FREX
, T
in
< T
hs
After
FREX
=0, there are 8 line data output before valid data output. T
hd
= 4 * T
hs
. Valid data is output when
HRE
T
set
= T
in
+ T
pr
+ T
ex
. T
set
> T
pr
+ T
in
. Because T
in
is uncertain, so exposure time setting resolution is T
hs
(one line).
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