A1 PROs AI338 A 380k pixels ccd area sensor for ntsc 1/3 inch video camera Datasheet

Ver0.1
A1 PROs
Ai338
1/3 inch CCD Image Sensor for NTSC Camera
1. Overview
1.1 General Description
16 Pin Plastic - DIP
( Top View )
The Ai338 is a 380K pixels CCD area sensor
for NTSC 1/3 inch video cameras. Buried
photodiodes and micro lenses are adopted for
low noise, low smear and high sensitivity. A
chrominance signal is achieved by the adoption
of Yellow, Magenta, Cyan and Green
complementary color mosaic filters. This
product also has the features of strong antiblooming and electronic shutter with variable
charge-storage time.
Vφ4 1
16 Hφ2
Vφ3 2
Vφ2 3
15 Hφ1
Vφ1 4
14 NC
13 V RG
GND 5
VNC
GG 6
12 V
P
PT
11 VSUB
VNC
SS 7
VOUT 8
10 GND
9 VDD
RG
1.2 Features
• Micro lens arrays for high sensitivity
• Ye, Mg, Cy and G complementary color mosaic filters
• Excellent blooming suppression
• TTL level(3.3V) operation on HCCD & RG electrodes
• 16 pin plastic DIP type package
• Variable electronic shutter of 1/60 to 1/100,000 sec
• High sensitivity and low smear
• Low image lag
1.3 Device Constitution
Optical black position ( Top View )
• Architecture : IT - CCD
• Optical size : 1/3 inch format
• Number of effective pixels :
768 (H) x 494 (V) = 379,392 pixels
• Number of total pixels :
811 (H) x 508 (V) = 411,988 pixels
• Pixel size : 6.35 (H) x 7.40 (V) ㎛2
• Optical black area
Horizontal direction : Front 3 pixels Rear 40 pixels
Vertical direction : Front 12 pixels Rear 2 pixels
• Number of dummy bits
Horizontal direction : Front 22 pixels Rear - pixels
Vertical direction : Front 1 pixels Rear - pixels
4
Pin1
Unit : Pixels
2 OB
494
12 OB
3
Pin9
768
40
Ai338
1.4 Pin Arrangement
VOUT
8
NC
NC
GND
Vφ1
Vφ2
Vφ3
Vφ4
7
6
5
4
3
2
1
VCCD
PD
HCCD
9
VDD
10
11
GND VSUB
12
13
14
15
16
PT
VRG
NC
Hφ1
Hφ2
1.5 Pin Descriptions
Pin
Symbol
Description
Pin
Symbol
Description
1
ΦV4
Vertical register transfer clock 4
9
VDD
Output amplifier drain bias
2
ΦV3
Vertical register transfer clock 3
10
GND
Ground
3
ΦV2
Vertical register transfer clock 2
11
ΦSUB
4
ΦV1
Vertical register transfer clock 1
12
PT
5
GND
Ground
13
ΦRG
6
NC
No connection
14
NC
7
NC
No connection
15
ΦH1
Horizontal register transfer clock 1
8
VO
CCD output signal
16
ΦH2
Horizontal register transfer clock 2
Substrate (Overflow drain) bias
Protection bias
Reset gate clock
No connection
1.6 Absolute Maximum Ratings
Relative to GND
(Unit : V)
Symbols
Min.
Max.
VDD
- 0.2
15.0
PT
- 7.5
0.2
GND
Reference
ΦRG
- 0.2
12.0
ΦSUB
- 0.2
29.0
ΦH1, ΦH2
- 0.2
5.0
ΦV1
- 7.0
14.0
ΦV2, ΦV3, ΦV4
- 7.0
7.0
VO
- 0.2
15.0
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1.7 Temperature Ratings
Symbols
Min
Max
Unit
Operating Temperature
-20
75
℃
Storage Temperature
-30
85
℃
Note) •Temperature rating is defined with the ambient temperature of sensor
•About the storage temperature of CCD, and local heat stress at the time of solder mounting, it provides
in “Notes on Device Handling”.
•Operating temperature Is not guaranteed the characteristics.
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2. Electrical Specification
2.1 Operating Voltage Conditions
Operating conditions
Symbol
Unit
Min.
Typ.
Max.
VDD
11.5
12.0
12.5
V
PT
- 6.5
- 6.0
- 5.5
V
‒
0.0
‒
V
3.0
3.3
3.6
GND
ΦRG
H-L
Bias
ΦSUB
H-L
ΦV1
ΦV2, ΦV3, ΦV4
V
*1
V
*2
V
*3
( Internal bias )
18.0
17.0
Bias
ΦH1, ΦH2
Notes
19.0
( Internal bias )
H
3.0
3.3
3.6
L
- 0.2
0.0
0.2
H
11.5
12.0
12.5
M
- 0.2
0.0
0.2
L
- 6.5
- 6.0
- 5.5
M
- 0.2
0.0
0.2
L
- 6.5
- 6.0
- 5.5
V
*4
V
Note) Driving voltage value of the above table indicates the voltage value in each Pad of the image sensor.
Note) *1 : Reset gate (ΦRG )
Note) *2 : Substrate (ΦSUB )
Note) *3 : Horizontal (ΦH1, ΦH2 )
Note) *4 : Vertical ( ΦV1 toΦV4 )
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3. Imaging Characteristics
3.1 Imaging Characteristics Testing Conditions
(1) The definition of standard imaging conditions.
Standard imaging conditions consist of standard optical system conditions, standard drive voltage
conditions, and standard drive timing conditions.
(2) Standard optical system conditions.
The conditions of the measurement optical system show below are made into standard optical conditions.
1 ) Light source color temperature
2 ) Camera lens iris diaphragm
3 ) IR cut filter
4 ) Illuminance of the CCD surface
5 ) Color filter ( When required )
: 4,800 K
: F11 considerable
: CM500S, t = 1.0 mm
: 1.0 lx ( After IR cut filter passage ).
: Blue filter : B440 , t = 2.5 mm
: Red filter : R64
, t = 2.5 mm
: Green filter : BW550 , t = 4.45 mm
(3) Standard drive voltage conditions.
the conditions driven with the typical value in operating voltage are made into standard drive voltage
conditions.
(4) Standard drive timing conditions.
It is measurement in the drive timing of standard timing chart.
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3.2 Imaging Characteristics
Symbol
Min.
Typ.
Max.
Unit
Conditions
Test
Temp
Test
method
Vsat
1,000
‒
‒
mV
60.8 lx illuminance
60℃
3.3.1
Sensitivity
So
200
250
‒
mV /
lx
Standard illuminance
accumulation time 1 / 60 sec
35℃
3.3.2
Smear
Sm
‒
-130
-105
dB
1,900 lx illuminance
35℃
3.3.3
Vertical transfer efficiency
Vtte
99.5
‒
‒
%
Standard illuminance
35℃
Item
Saturation signal
Horizontal transfer efficiency
Htte
99.0
‒
‒
Signal shading
Shd
‒
‒
20
△Sr
‒
‒
10
Uniformity between
video signal channels
Flicker
Red
Notes
3.3.4
3.3.5
%
Standard illuminance
35℃
%
Standard illuminance
35℃
3.3.6
3.3.7
Blue
△Sb
‒
‒
10
3.3.8
Y
FlkY
‒
‒
2.0
3.3.9
Cr
FlkCr
‒
‒
5.0
Cb
FlkCb
‒
‒
5.0
3.3.11
R
LcR
‒
‒
3.0
3.3.12
B
LcB
‒
‒
3.0
%
Line crawl
%
Standard illuminance
Standard illuminance
( Each color filter addition )
35℃
3.3.10
3.3.13
35℃
G
LcG
‒
‒
3.0
W
LcW
‒
‒
3.0
Dark signal
Vdk
‒
‒
1.0
mV
Dark condition
60℃
3.3.16
Lag
Lag
‒
‒
0.5
%
strobe light
35℃
3.3.17
3.3.14
3.3.15
[ Measurement system ]
The test point is assumed to be the output point of the following circuit block ( Both of the ˠ of AMP and the
operation processing are 1 ) The device output voltage ( Unit : mV ) of dark characteristics and
temperature white defect is converted from screen output by gain of AMP
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3.3 Imaging Characteristics Tested Procedures
3.3.1. Saturation signal
1 ) Set 60.8 lx illumination condition, then measure the signal output.
2 ) Detect the average value of the test area
3 ) See figure 1 below for the Test area
3.3.2. Sensitivity
1) Set 1.0 lx illumination condition, then measure the signal output.
2) Detect sensitivity with the following formula.
3) See figure 1 below for the Test area
3.3.3. Smear
1) Set 0 lx illumination condition, then measure the signal output without readout PD ( IMAFE0 ).
2) Set 1900 lx illumination condition measure the signal output readout PD (IMAGE1 ).
3) Subtract IMAGE0 from IMAGE1 as a reference level if the signal output.
4) Divide Smear test area to 20 areas, and detect the average value in each area.
5) Select the maximum value from the average values ( Smear_max ).
6) Detect Smear with the following formula.
7) See figure 2 below for the Test area.
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3.3.4. Vertical transfer efficiency
1) Set 1.0 lx illumination condition, then measure the signal output.
2) Detect average value of horizontal last line in effective area ( V_EFF ).
3) Detect average value of horizontal first line in OB area ( V_OB ).
4) Detect average value of horizontal line in reference area ( V_REF ).
5) Detect Vertical transfer efficiency with the following formula
6) See figure 3 below for the Test area.
3.3.5. Horizontal transfer efficiency
1) Set 1.0 lx illumination condition, then measure the signal output.
2) Detect average value of vertical last line in effective area ( H_EFF ).
3) Detect average value of vertical first line in OB area ( H_OB ).
4) Detect average value of vertical line in reference area ( H_REF ).
5) Detect Horizontal transfer efficiency with the following formula
6) See figure 4 below for the Test area.
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3.3.6. Signal shading
1) Set 1.0 lx illumination condition, then measure the signal output.
2) Make composition of luminance signal Y.
3) Apply low pass filter to luminance signal Y ( ex : rank filter and convolution filter ).
4) Measure the maximum and minimum value of luminance signal Y.
5) Detect Signal shading with the following formula.
Shd [ % ] = ( ( Y.max – Y.min ) / Y.mean ) x 100
3.3.7. Uniformity between video signal channels : Red
1) Set 1.0 lx illumination condition, then measure the signal output.
2) Make red chroma signal R – Y and luminance signal Y.
3) Apply low pass filter to chroma signal R – Y (ex : rank filter and convolution filter ).
4) Measure the maximum and minimum value if red chroma signal R – Y.
5) Detect △Sr with the following formula.
△Sr [ % ] = ( ( R – Y ).max – ( R – Y ).min ) / Y.mean ) x 100
3.3.8. Uniformity between video signal channels : Blue
1) Set 1.0 lx illumination condition, then measure the signal output.
2) Make blue signal B – Y and luminance signal Y.
3) Apply low pass filter to chroma signal B – Y ( ex : rank filter and convolution filter ).
4) Measure the maximum and minimum value of blue chroma signal B – Y.
5) Detect △Sb with the following formula.
△Sb [ % ] = ( ( B – Y ).max – ( B – Y ).min / Y.mean ) x 100
3.3.9. Flicker : Y
1) Set 1.0 lx illumination condition, then measure the signal output
2) Measure odd field output value ( Y.ODD ).
3) Measure even field output ( Y.EVE ).
4) Detect Flicker Y with the following formula.
FlkY [ % ] = ABS ( 2 x ( Y.ODD – Y.EVE ) / ( Y.ODD + Y.EVE ) )
3.3.10 Flicker : Cr
1) Set 5.5 lx illumination condition with red filter, then measure the signal output.
2) Make red chroma signal R – Y.
3) Measure odd field output value ( CR.ODD ).
4) Measure even field output value ( CR.EVEN ).
5) Detect Flicker Cr with the following formula.
FlkCr [ % ] = ABS ( 2 x ( CR.ODD – CR.EVE ) / ( CR.ODD + CR.EVE ) )
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3.3.11. Flicker : Cb
1) Set 5.5 lx illumination condition with blue filter, then measure the signal output.
2) Make blue chroma signal B – Y.
3) Measure odd field output value ( CB.ODD ).
4) Measure even field output value ( CB.EVE ).
5) Detect Flicker Cb with the following formula.
FlkCb [ % ] = ABS ( 2 x ( CB.ODD – CB.EVE ) / ( CB.ODD + CB.EVE ) ) x 100
3.3.12. Line crawl : R
1) Set 5.5 lx illumination condition with red filter, then measure the signal output.
2) Make composition of luminance signal Y.
3) Apply low pass filter to Y ( ex : rank filter ).
3) Calculate difference between Y signal lines for the same field.
4) Select maximum difference △( LCLEV ) value.
5) Detect Line crawl R with the following formula.
LcR [ % ] = ABS ( LCLEV / Y.mean ) x 100
3.3.13. Line crawl : B
1) Set 5.5 lx illumination condition with blue filter, then measure the signal output.
2) Make composition of luminance signal Y.
3) Apply low pass filter to Y ( ex : rank filter ).
4) Calculate difference between Y signal line for the same field.
5) Select maximum difference △( LCLEV ) value.
6) Detect Line crawl B with the following formula.
LcB [ % ] = ABS ( LCLEV / Y.mean ) x 100
3.3.14. Line crawl : G
1) Set 5.5 lx illumination condition with green filter, then measure the signal output.
2) Make composition of luminance signal Y.
3) Apply low pass filter to Y ( ex : rank filter ).
4) Calculate difference between Y signal lines for the same field.
5) Select maximum difference △( LCLEV ) value.
6) Detect Line crawl G with the following formula.
Lcg [ % ] = ABS ( LCLEV / Y.mean ) x 100
3.3.15. Line crawl : W
1) Set 1.0 lx illumination condition
2) Make composition of luminance signal Y.
3) Apply low pass filter to Y ( ex : rank filter ).
4) Calculate difference between Y signal line for the same field.
5) Select maximum difference △( LCLEV ) value.
6) Detect Line crawl W with the following formula.
LcW [ % ] = ABS ( LCLEV / Y.mean ) x 100
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3.3.16. Dark signal
1) Set the temperature to 60℃ and 0.0 lx illumination condition, then measure the signal output.
2) Detect Dark signal with the following formula.
3) See figure 5 below for Test area
3.3.17 Lag
1) Set the temperature to 35℃, strobe light and AFE gain 6dB condition.
2) Adjust the Y signal output value generated by strobe light to 200mV.
3) After setting the strobe light so that it strobes with the following timing, measure the residual signal (Ylag),
and substitute the value into the following formula.
Lag [%] = (Ylag/200) X 100(%)
Figure 6. Lag test
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4. Spectral characteristic
(Reference)
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5 Application
5.1 Application Circuit
100kΩ
VDD
1μF
 SUB
0.033μF
V4
V3
V2
V1
VL
V driver
ΦV4
ΦV3
ΦV2
ΦV1
NC
GND
Pad-No.1
NC
VO
Pad-No.8
ΦH2
ΦH1
NC
ΦRG
PT
ΦSUB
GND
VDD
Ai 338
( Top View )
Pad-No.9
Pad-No.16
12.0V
0.1μF
3.3V
-6.0V
ΦRG
ΦH1
0.01μF
ΦH2
47Ω
1000pF
CCD output
1.5kΩ
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6. Drive condition
6.1. Power-on conditions
(1) Stating up power supply
1) First bring up the + 3.3 V system, making sure that the ΦSUB pin never becomes lower than the ground potential.
2) After that, bring up the+12.0Vsystem(Φ VH, and VDD ) and the – 6.0 V system (ΦVL and PT ). These levels may
be brought up at the same time, however avoid bringing these levels up extremely rapidly.
3) The only constraint on the time from the point the + 3.3 V system is brought up to the + 12.0 V and – 6.0 V
systems are brought up is that it be long enough for the vertical driver logic system to start up.
(2) Ending power supply
Turn off power supply levels in the reverse order form the application sequence.
1) Bring down the + 12.0 V system (ΦVH, and ADD ) and the – 6.0 V system (ΦVL and PT ).
2) After that, turn off the + 3.3 V system.
(3) Other notes
1) Design applications so that voltage do not exceed the absolute maximum ratings during the power supply startup
transition period.
2) The condition PT ≤ ΦVL must be maintained during the power supply on / off transition periods.
3) Do not connect or disconnect signals to or from the CCD voltage when power supply system are on
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6.2 Timing Chart
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7. Notes on Device Handling
This section provides notes on handling CCD image sensors as optical devices implemented as a MOS
integrated circuit ( IC ).
1) Cautions to Static Electricity
You should take extreme care to Static Electricity.
As a rule, device handling should be done in EPA ( EPA : ESD Protection Area (ESD : electrostatic
discharge ) ).
If the static electricity discharges to the CCD’s pins, transfer efficiency may be reduced and other
characteristics changed depending on the voltage if the ESD.
In extreme cases, the protection circuits may break down and the device became inoperable.
(1) In dry air, since a possibility that static electricity will occur by friction becomes high, please perform
moisture control of the working space to more than 50 % RH
(2) Use of dischargers, such as ionized air, can be effective in prompting the discharge of static
electricity
(3) Since static charge of several thousand volts can accumulate due to friction between the human
body and synthetic fiber clothing, staff should always wear work clothes and uniforms made from
antistatic materials. Also, staff should wear conductive footwear.
(4) When handling CCD’s, staff should use antistatic gloves and grounded, their bodies by wearing
wrist strap connected to ground through 1MΩ resistance. Also, prevent static charges from
accumulating by spreading grounded conductive sheets on the floors and workbenches where
CCDs will be handled.
(5) Please take extreme care to Static Electricity in your assemble process line involving products
storaging.
2) Notes on Power Supply Application
Although there is a list of points that require care and attention with respect to applying the power supply
levels provided separately in the “ Note on Power supply Application” document, the conditions listed
below must also be met
(1) Do not use this device with any of the maximum ratings stipulated in the device standard exceeded.
(2) Do not apply power with the CCD pins connected incorrectly. That could result in source/drain
reversals or the protection transistors being forward biased and large currents could destroy the
inter connects on the chip.
(3) Do not use a power supply whose transient voltage levels exceed the maximum rating.
(4) Use the “Recommended Sample Circuit ( Latch – up prevention peripheral circuit example )” to
prevent latch – up from occurring. If latch – up does occur, abnormal currents may flow between
power supply terminal and GND. The heat generated may make the CCD inoperative
3) Notes on Temperature in Assembly Process and Soldering
CCD has the limit temperature as follows, based on the physical limit of materials used.
Please take care not to hearten over this temperature in your process.
Item
Limit temperature
Possible damage ( due to higher temperature than the limit )
CCD part
≤ 170 ℃
Degradation of on-chip filter and lens
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4) Notes on CCDs as Optical Elements
(1) This CCD features micro lenses that increase the ability of the photodiodes to collect light and color
filter that allow the CCD to recognize color information integrated on the chip itself in the sections
of the CCD that perform the photoelectrical conversion.
Since these on-chip components ate implemented using plastics, the transparency of the filter and
lens materials is reduced by the light that enters the CCD depending on the spectral characteristics,
intensity, and exposure time.
Due to this fact, these devices must be protected from UV light, sunlight, and any other bright light
during all phases of use and handling, including storage, transport and end product manufacture.
(2) If the same pattern is protected onto the CCD image sensor for an extended period, depending on
the intensity of the image and the time, that pattern may be burned onto the sensor resulting in the
pattern being reflected in the characteristic or variations in characteristic, regardless of whether of
not power is applied.
When not using a CCD, we recommend blocking all light and turning off the power.
5) storage environment
CCD is a precision optical product.
Therefore, temperature, humidity, radiation and static electricity etc. of storage environment have to be
controlled.
Please pay attention to the following when storing CCD.
(1) Storage condition of CCD
a) Packed Condition.
Please storage CCD as it packed on our delivery packing in the following environment.
Temperature
: Ta = 25 ± 10 ℃
Humidity
: RH = 60 % or less
Storage life
: 1year
b) Opened pack condition
When you opened pack, please keep environment as follows.
Temperature
: Ta = 23 ± 5 ℃
Humidity
: RH = 10 % or less
Storage life
: 3 months
If you can not store CCD in dry air, please keep environment as follows.
Temperature
: Ta = 23 ± 5 ℃
Humidity
: RH = 30 ~ 60 %
Storage life
: 3 months
But, the condition should fulfill the following equation.
RH < -3x Ts + 114 ( Red area in Fig.1 )
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(2) Other Cautions
a) Do not store CCD in a location where they will be irradiated sunlight, UV and so on.
b) Do not subject these devices to rapid change in temperature that could cause condensation.
c) Do not subject these devices to ionizing radiation, electrostatic fields or discharge, or strong
magnetic fields.
d) If the storage location is humidified with a humidifier in the winter, use water that ha been
brought to a boil.
this is because chlorine and other chemicals dissolved in the water could cause oxidation of the
leads.
e) Store packing containers in a place where they will not be subject to variation, mechanical shock,
or being stacked under other materials or freight.
6)Dust and Contamination
Dust or contamination on the glass surface could deteriorate the output characteristic or cause a scar. In
order to minimize dust or contamination on the glass surface, take the following precautions :
(1) Handle CCD in a clean environment such as a cleaned booth.
Perform all lens assembly and work in a clean room.
(2) Do not touch the glass surface with the finger. If dust or contamination gets on the glass
surface, the following cleaning method is recommended:
• Dust from static electricity should be blown off with an ionized air blower. For anti electrostatic
measure, however, ground all the leads on device before blowing off the dust.
• The contamination on the glass surface should be wiped of with a clean applicator socked in
isopropyl alcohol. Wipe slowly and gently in one directly only.
Frequently replace the applicator and do not use the same applicator to clean more than one
device
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8. Package
8.1 Package Dimension (16 PIN PLASTIC-DIP)
B
UNIT = mm
6.1
R0
DE .5
PT
H=
0.4
2. The rotation angle of the effective
image area relative to H and V is
±1.5。
V
H
: GLASS LID
B
1.40±0.3
0.17±0.10
R
0.3
5.7
2.5
1.The center of the effective image
area relative to “ B ” and “ B’ ”is
(H, V) = (6.1, 5.7)±0.15mm.
12.20±0.1
3。
9.70±0.10
1.57
3.08±0.3
8.9±0.10
11.40±0.1
5。
5。
1.27±0.10
3.55±0.25
0.64
R0.3
10.73±0.05
0.30±0.10
0.46±0.10
0.25
1.27±0.05
11.43±0.3
1.27X7=8.89±0.10
11.80±0.05
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8.2 Package Marking
8.2.1. Marking contents
(1) Product name : Ai338
(2) Company name : A1 PROs
(3) Country of origin : KOREA
(4) Data code
:
(A)
① A1 PROs (company mark)
(B)
② Device Name
(C)
③ Lot No.
(D)
④ Workweek (2 digit)
⑤ Manufacturing Year (2 digit)
Marking : FONT120P
Character Height (mm) : (A):2.00, (B):1.500, (C):0.700, (D):1.350
Character width (mm): (A):5.933, (B):6.822
Line Space (mm): 0.35, 0.45, 0.64
Accuracy : ±5%
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