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IMX327 数据手册,索尼SENSOR解密maison
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IMX327 数据手册,索尼SENSOR,解密maison
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1
IMX327 Application Note
Digital Overlap HDR
Other specifications without this document conform to the IMX327 datasheet
Description
This document describes how to use the Digital Overlap (DOL) HDR function. The sensor outputs to overlap several
images that have different exposure time. In DOL 2 frame, the long exposure signal and the short exposure signal 1
are output as HDR set (Frame set) among 2 frames period of normal operation. In DOL 3 frame, the long exposure
signal, the short exposure signal 1 and the short exposure signal 2 are output as HDR set (Frame set) among 4
frames period of normal operation.
Features
◆ Digital Overlap HDR function
DOL 2 frame (Combining 2-frame)
DOL 3 frame (Combining 3-frame)
◆ Supports readout drive mode
Full HD1080p mode (All pixel scan)
HD720p mode
◆ Supports Interfaces
Low-voltage LVDS (150mVp-p) serial DDR output (2ch, 4ch)
CSI-2 serial output (2Lane / 4Lane, RAW10 / RAW12)
◆ Supports each frame gain adjust function.
Sony Semiconductor Solutions Corporation reserves the right to change products and specifications without prior notice.
This information does not convey any license by any implication or otherwise under any patents or other right.
Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony Semiconductor Solutions
Corporation cannot assume responsibility for any problems arising out of the use of these circuits.
Maison Technologies Ltd.
IMX327 Application Note
2
Contents
Description ............................................................................................................................................................................. 1
Features ................................................................................................................................................................................. 1
Description of Digital Overlap HDR Function ......................................................................................................................... 3
About the output format ...................................................................................................................................................... 4
Exposure Time .................................................................................................................................................................... 6
Support Mode ......................................................................................................................................................................... 7
List of Register .................................................................................................................................................................... 9
Parameter settings ............................................................................................................................................................ 12
Number of Blanking Lines before the Short Exposure Frame Output ............................................................................... 13
Identification Code Settings .................................................................................................................................................. 15
Sync code ......................................................................................................................................................................... 16
Identification Code ( Serial LVDS output) ......................................................................................................................... 17
Identification Code (CSI-2 output) ..................................................................................................................................... 22
Frame Information line ...................................................................................................................................................... 24
XVS, XHS Settings ........................................................................................................................................................... 25
Sensor Master Mode ..................................................................................................................................................... 26
Sensor Slave Mode ....................................................................................................................................................... 27
Each Frame Gain Adjustment .............................................................................................................................................. 28
Reflection Timing of Register Settings .............................................................................................................................. 28
Mode Transition .................................................................................................................................................................... 29
Reflection Timing of Register Settings .............................................................................................................................. 29
Example of Settings ............................................................................................................................................................. 30
DOL 2 frame ..................................................................................................................................................................... 30
DOL 3 frame ..................................................................................................................................................................... 32
Appendix .............................................................................................................................................................................. 34
DOL 2frame decreasing exposure ratio mode .................................................................................................................. 34
Non-DOL decreasing exposure ratio mode ....................................................................................................................... 37
Revision History ................................................................................................................................................................... 43
Maison Technologies Ltd.
IMX327 Application Note
3
Description of Digital Overlap HDR Function
Combining 2 frames (DOL 2 frame)
This mode operates to exposure in the order of the long exposure frame (LEF), the short exposure frame1 (SEF1)
among 2 frames of normal operation, and then each exposure frame data are output in overlapped. Set to the
exposure time of LEF and SEF1 in such a way that the following formula is satisfied:
t
LEF
> t
SEF1
Combining 3 frames (DOL 3 frame)
This mode operates to exposure in the order of the long exposure frame (LEF), the short exposure frame1 (SEF1),
the short exposure frame2 (SEF2) among 4 frames of normal operation, and then each exposure frame data are
output in overlapped. Set to the exposure time of LEF, SEF1, and SEF2 in such a way that the following formula is
satisfied:
t
LEF
> t
SEF1
> t
SEF2
Example of Output Image
5 Vertical blanking period
VB
System delay
SD
XVS
1 Frame information line
XHS
HB
SD + HB
Horizontal Blanking
5 Vertical blanking period
Sync code
3
Sync code
4 4
Sync code
2 Ignored OB
Vertical effective OB10
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
Effective margin for
color processing
Ignored area of effective
pixel side
Effective margin for
color processing
Effective margin for
color processing
Ignored area of effective
pixel side
4 8
9 4
Effective margin for
color processing
8
1080
1920
9
VB
1 Frame information line
2 Ignored OB
Vertical effective OB10
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
Effective margin for
color processing
Ignored area of effective
pixel side
Effective margin for
color processing
Effective margin for
color processing
Ignored area of effective
pixel side
4 8 9 4
Effective margin for
color processing
8
1080
1920
9
VBP
R
B
G
G
R
B
G
G
4 4
Horizontal dummy
Sync code
3
Horizontal dummy
R
B
G
G
R
B
G
G
Image drawing of DOL 2 frame / Full HD 1080p mode in Low-voltage LVDS serial output
(Pattern1* / No Identification code)
XVS
XHS
4 Vertical blanking period
VB
System delay
SD
HB
SD + HB
Horizontal Blanking
3 Vertical blanking period
PH
Vertical effective OB10
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
Ef fective mar gi n for
color processing
Ignored area of effective
pi x e l s id e
Effective margin for
color processing
Ef fective mar gi n for
color processing
Ignored area of effective
pi x e l s id e
Effective margin for
color processing
8
1080
9
VB
2
Vertical effective OB10
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
Ef fective mar gi n for
color processing
Ignored area of effective
pi x e l s id e
Effective margin for
color processing
Ef fective mar gi n for
color processing
Ignored area of effective
pi x e l s id e
Effective margin for
color processing
8
1080
9
VBP1
FS
3 Vertical blanking period
PF
2
Vertical effective OB10
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
Ef fective mar gi n for
color processing
Ignored area of effective
pi x e l s id e
Effective margin for
color processing
Ef fective mar gi n for
color processing
Ignored area of effective
pi x e l s id e
Effective margin for
color processing
8
1080
9
VBP2
PH PF
PH PF
FE
1 EBD
Horizontal dummy
R
B
G
G
R
B
G
G
SD + HB
R
B
G
G
R
B
G
G
R
B
G
G
R
B
G
G
Horizontal dummy
Horizontal dummy
2 Ign ored OB
Ign ored OB
Ign ored OB
Long Exposure
Frame
Sh ort Exposure
Frame 1
Sh ort Exposure
Frame 2
VB
Id en tifi c ati on code
Id en tifi c ati on code
Id en tifi c ati on code
Dummy1
Image drawing of DOL 3 frame / Full HD 1080p in CSI-2 output
(Pattern1*)
Please refer to the item of " Sync code " for Pattern1 and Pattern2.
Maison Technologies Ltd.
IMX327 Application Note
4
About the output format
Each data are output sequentially in line unit from frames which has different exposure time. At first, long exposure
data will be start to output. The short one is followed it. For each definition, refer to the table below. When CSI - 2 is
used, data other than VBP for one line is output during V blanking period. Please treat this invalid dummy data in the
same as other VBP output. Because it is not an effective pixel area, there is no effect. .
Image Drawing of DOL HDR Function
Definition of Each Item
Symbol
Unit
Remarks
VMAX
H
Number of horizontal line per 1 Frame
FSC H
Number of frame set
DOL 2frame: 1 frame set = 2 frames
DOL 3frame: 1 frame set = 4 frames
BRL
H
Basic Readout Lines. Number of necessary readout lines in sensor.
LEF
-
Long Exposure Frame
SEF1
-
Short Exposure Frame1. In DOL 3 frame, second shortest exposure frame.
SEF2
-
Short Exposure Frame2. In DOL 3 frame, shortest exposure frame.
VBP1
H
Vertical Blanking Period 1. The blanking lines until short exposure frame 1 output.
VBP2
H
Vertical Blanking Period 2. The blanking lines until short exposure frame 2 output.
FSET
= 0
FSC
XVS
1 Frame
VMAX
DOL HDR
2 frame Operation
Normal Exposure
Operation
XHS
BRL
OB
XVS
VMAX
XHS
Blanking
1 Frame
OB
Blanking
VBP1
Output
LEF
SEF1
Output
Blanking
Effective data
FSC
XVS
VMAX
XHS
DOL HDR
3 frame Operation
1 Frame
OB
Blanking
FSET = 1
VBP1
LEF
SEF1
Blanking
SEF2
VBP2
… … …
Output
FSET = 0
Blanking
Maison Technologies Ltd.
IMX327 Application Note
5
The example of output image is shown below.
The frame of long exposure frame (LEF) and frame of short exposure frame 1 (SEF1) are output alternately. The right
figure described by LEF and SEF1 separately. The SEF1 data is output that has delay by exposure time from LEF
data. In DOL HDR function, each frames data must complete output within period of frame set count (FSC). For
these restrictions, refer the section “Parameter Settings”.
Image Drawing of Output when DOL 2 frame Operation
LEF (x)
Blanking
XHS XHS
XVS
Blanking
Blanking
Blanking
Blanking
Frame Information line
LEF(1)
LEF(2)
VBP1(1)
VBP1(2)
VBP1(3)
LEF(3)
LEF(x - 1)
LEF(x)
Frame Information line
VBP1(4)
VBP1(x)
SEF1(1)
SEF1(2)
XVS
XHS
Blanking
Blanking
Blanking
Frame Information line
VBP1(1)
VBP1(2)
VBP1(x)
LEF (x + 1)
Frame Information line
SEF1(1)
SEF1(2)
SEF1(3)
・・・
・・・
・・・
Blanking
Blanking
・・・
FSC
Output by XHS unit basis
Image drawing of output image that sorted by each exposure frame
(Excluding horizontal blanking and sync code.)
*1 x: Variable by RHS register settings. And, Corresponding the line memory is necessary.
Blanking
SEF1(BRL)
・・・
Blanking
SEF1(BRL - 1)
Blanking
LEF(x + 1)
LEF(x + 2)
LEF(x + 3)
LEF(1)
LEF(2)
LEF (x + 2)
BRL
Maison Technologies Ltd.
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