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34results about How to "Brightness effect" patented technology

Imaging apparatus and exposal control method for the same

The present invention provides an imaging device capable of appropriately exposing the face and the body of a subject person at the same time. This imaging device is provided with: CCD101, is used for inputting the image data corresponding to the subject; The human face detection unit that is implemented by CPU module 104c in the digital camera microprocessor 104, is used in the picture that the image data that CCD101 outputs obtains. Detect people's faces; the first light metering unit implemented by the CPU module 104c measures the people's faces detected by the CPU module 104c as the light metering area; the second light metering unit implemented by the CPU module 104c judges the detected people In the upper and lower direction of the face, the part below the face is used as the photometering area for photometry; the exposure control unit implemented by the CPU module 104c calculates the exposure according to the photometry results of the first photometry unit and the photometry results of the second unit, and then Exposure control is performed based on the calculated exposure amount.
Owner:RICOH KK

OLED pixel circuit and driving method thereof, display panel and display device

The invention relates to an OLED pixel circuit and a driving method thereof, a display panel and a display device. The OLED pixel circuit comprises a charge control module, a driving transistor, a reset control module, a light emitting control module and a light emitting device, wherein the charge control module is connected with a data line and the reset control module, and is used for introducing data signals provided by the data line to the reset control module, and the reset control module is connected with the driving transistor, and is used for resetting and compensating the driving transistor according to the data signals, so that a control electrode of the driving transistor has a first preset electric potential; the driving transistor is used for generating driving current allowing the light emitting device to emit light according to the electric potential of a source electrode and the first preset electric potential of the control electrode, and the light emitting control module is connected between the driving transistor and the light emitting device, and is used for controlling the driving transistor and the light emitting device to be connected or disconnected. According to the OLED pixel circuit, the impact of the attenuation of reference voltage signals and the change in threshold voltage on display effect can be avoided.
Owner:BOE TECH GRP CO LTD

Backlight module, liquid crystal display and backlight drive control method

The invention discloses a backlight module, a liquid crystal display and a backlight drive control method. The backlight module comprises an LED backlight and a drive circuit; the LED backlight comprises an LED formed by a blue light chip, red fluorescent powder and green fluorescent powder, and an LED formed by a blue light chip, a green light chip and red fluorescent powder; the drive circuit comprises driving circuit modules driving the two LEDs respectively. The liquid crystal display comprises the backlight module and a display panel. The LED formed by the blue light chip, the red fluorescent powder and the green fluorescent powder and the LED formed by the blue light chip, the green light chip and the red fluorescent powder are combined to serve as the backlight of the liquid crystal display, different drive circuit modules drive and control the two LEDs, color showing capability of the liquid crystal display reaches Adobe 100%, and adverse effects on the integral brightness are not caused.
Owner:BOE TECH GRP CO LTD +1

Backlight adjustment method, backlight adjustment system and display device

The present invention provides a backlight adjustment method, a backlight adjustment system and a display device. The backlight adjustment method comprises: dividing a frame of picture into n image blocks, obtaining the sub-backlight brightness corresponding to each image block, and further comprises: calculating an average backlight brightness corresponding to the frame of the picture on the basis of each sub-backlight brightness, determining whether the sub-backlight brightness needs to be enhanced on the basis of the average backlight brightness, and performing enhancement for the sub-backlight brightness which needs to be enhanced, wherein n is an integer greater than 1. The backlight adjustment method not only solves the problems of reduced brightness for bright picture and poor display effect associated with existing backlight adjustment method, but also reduces the overall display power consumption, increase the image contrast and reduce influence of mora (ripple phenomenon) on the screen.
Owner:BOE TECH GRP CO LTD +1

Traffic light realizing environment self-adaption

The invention discloses a traffic light realizing environment self-adaption. The traffic light comprises laser signal lamps and diode signal lamps and is mounted in a signal mounting box fixed on a lamp pole; a solar cell panel is mounted at the top of the lamp pole; a storage battery is mounted on the signal mounting box; mounting plates are arranged on the signal mounting box; a nut is arranged on the side, facing the inside of the signal mounting box, of each mounting plate; an electric motor is fixedly mounted on the lamp pole, and a screw rod matched with the nuts is connected on an output shaft of the motor. A control system comprises a control module connected with the electric motor as well as a visibility acquisition module, a wifi module, a brightness acquisition module, a weather signal acquisition module and a dimming module which are connected with the control module, the weather signal acquisition module is connected with the wifi module, the storage battery is connected with the diode signal lamps through the dimming module, andthe laser signal lamps and the motor are both connected with the storage battery.
Owner:SICHUAN VOCATIONAL & TECHN COLLEGE OF COMM

Electroluminescent display panel, manufacturing method and display device

The invention discloses an electroluminescent display panel, a manufacturing method and a display device. An opening region of a pixel defining layer defines the sub-pixel light emitting region. By changing the shape of the opening region of the edge of an irregular display region, the area of the opening region with the irregular edge is smaller than the area of an opening region in the standardshape with the same light emitting color sub-pixel. By changing the opening region with the irregular edge along with the ideal edge of the irregular display region, the outer side of the ideal edge is free from the opening region, so a sawtooth displaying problem of the irregular display region is thoroughly eliminated. The light emitting functional layer of the sub-pixel fully covers the corresponding opening region, so it can be ensured that the shape region with uncontrollable thickness during evaporation is out of the opening region with irregular edge, so brightness of the sub-pixel of the irregular display region will not be affected to cause the poor displaying.
Owner:BOE TECH GRP CO LTD +1

Method and device for adjusting brightness between equipment in linkage manner, and equipment

InactiveCN106230909ARealize intelligent linkage of brightnessImprove user experienceTransmissionComputer scienceBrightness perception
The invention relates to a method and device for adjusting brightness between equipment in a linkage manner, and the equipment. The method for adjusting brightness between the equipment in the linkage manner comprises the following steps: first equipment obtains brightness adjusting information sent by second equipment in the same local area network; and the brightness of the first equipment itself is adjusted according to the corresponding relationship of the brightness adjusting information and pre-set brightness. By means of the scheme in the embodiment of the invention, intelligent linkage of brightness between different equipment can be realized; and thus, different equipment respectively adjusts according to brightness of each other, so that brightness is automatically changed.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD

Brightness control circuit and backlight control module

The invention relates to a luminance control circuit, which is suitable for controlling luminance of light module. Reference voltage source is used for providing reference voltage level. Light sensitive module is used for generating first current passing through light sensitive module based on lighting strength. Charging module is connected between light sensitive module and ground, and generates charging level according to first current upon electric voltage node. Voltage control circuit includes comparator and diode, wherein the comparator comprises positive input terminal connected to reference voltage source, negative input terminal connected to voltage node, and first output terminal, outputs corresponding comparative signal according to relation between reference electric level and charging level, and the diode is connected between negative input terminal and first output terminal. The switch is connected to voltage control circuit, and provides second current passing through luminous module according to comparative signal.
Owner:ASIA OPTICAL CO INC

Imaging apparatus and exposal control method for the same

The invention provides a camera device which can expose the face and body of the imaged person at the same time. The camera device comprises a CCD101 for inputting the image data corresponding to the image person; a face detection unit which is executed by a CPU module 104c in a digital camera microprocessor 104 and used for detecting the face from the picture obtained from the image data outputted by the CCD10; a first photometric unit which is executed by the CPU module 104c and used for using the face detected by the CPU module 104c as the photometric area for photometering; a second photometric unit which is executed by the CPU module 104c and used for judging the upward and downward direction of the face and using the lower part of the face as the photometric area for photometering; an exposure control unit which is executed by the CPU module 104c and used for calculating the exposure amount according the photometering results of the first photometric unit and the photometric unit and then for controlling the exposure according to the calculated exposure amount.
Owner:RICOH KK

Backlight adjustment method, backlight adjustment system and display device

The present invention provides a backlight adjustment method, a backlight adjustment system and a display device. The backlight adjustment method comprises: dividing a frame of picture into n image blocks, obtaining the sub-backlight brightness corresponding to each image block, and further comprises: calculating an average backlight brightness corresponding to the frame of the picture on the basis of each sub-backlight brightness, determining whether the sub-backlight brightness needs to be enhanced on the basis of the average backlight brightness, and performing enhancement for the sub-backlight brightness which needs to be enhanced, wherein n is an integer greater than 1. The backlight adjustment method not only solves the problems of reduced brightness for bright picture and poor display effect associated with existing backlight adjustment method, but also reduces the overall display power consumption, increase the image contrast and reduce influence of mura (ripple phenomenon) on the screen.
Owner:BOE TECH GRP CO LTD +1

OLED illumination screen body connected in series with light-emitting component and preparation method thereof

The present invention provides an OLED (Organic Light-Emitting Diode) illumination screen body connected in series with a light-emitting component and a preparation method thereof. The OLED illumination screen body is divided into N light-emitting regions, and each light-emitting region comprises M light-emitting components connected in series. When different light-emitting components in each light-emitting region are mutual opposite short-circuit resistance resistors, when one of the light-emitting components generates a short-circuit defect, other light-emitting components connected with thelight-emitting component in series can have a short-circuit resistance effect, and when M is larger than or equal to 2 and N is larger than or equal to 50, the current values in the light-emitting regions only reduce 2% and less than 2% so as not to hardly any influence on the brightness of the illumination screen body even though the short-circuit defect is generated in a certain light-emittingregion. Namely, according to the scheme, a very simple structure is employed to ensure that the brightness of the illumination screen body cannot be influenced while achieving the short-circuit resistance effect.
Owner:GUAN YEOLIGHT TECH CO LTD

Optical fingerprint sensor module and forming method thereof

The invention discloses an optical fingerprint sensor module and a forming method thereof. The optical fingerprint sensor module comprises an optical fingerprint sensor; a photochromic layer is positioned on the optical fingerprint sensor; the photochromic layer is used for realizing discoloration under the irradiation of ultraviolet light with first intensity so as to selectively cut off light ina characteristic wavelength range; the photochromic layer has a first light transmittance to the light in the characteristic wavelength range under the irradiation of ultraviolet light with a first intensity; the photochromic layer has second light transmittance for the light in the characteristic wavelength range under the irradiation of ultraviolet light with second intensity, the first intensity is greater than or equal to cut-off threshold intensity, the second intensity is smaller than the cut-off threshold intensity, and the first light transmittance is smaller than the second light transmittance. The performance of the optical fingerprint sensor module is improved.
Owner:SHANGHAI OXI TECH

OLED pixel circuit and its driving method, display panel and display device

The present invention relates to an OLED pixel circuit and a driving method thereof, a display panel and a display device. The OLED pixel circuit includes a charging control module, a driving transistor, a reset control module, a light-emitting control module and a light-emitting device; the charging control module is connected to the data line and the reset control module, and is used for introducing the data signal provided by the data line to the reset control module module; the reset control module is connected with the driving transistor, and is used for resetting and compensating the driving transistor according to the data signal, so that the control electrode of the driving transistor has a first preset potential; the driving transistor is used for according to the potential of its source and its The first preset potential of the control electrode generates a driving current that makes the light-emitting device emit light; the light-emitting control module is connected between the driving transistor and the light-emitting device, and is used for controlling the connection or disconnection of the driving transistor and the light-emitting device. The above-mentioned OLED pixel circuit can avoid the attenuation of the reference voltage signal and the change of the threshold voltage from affecting the display effect.
Owner:BOE TECH GRP CO LTD

Backlight module, liquid crystal display and backlight drive control method

A backlight module, a liquid crystal display and a control method for driving the backlight source, the backlight module comprising an LED backlight source and a driving circuit, the LED backlight source comprising first LEDs each formed of a blue light chip, red phosphor powder and green phosphor powder, and second LEDs each formed of a blue light chip, a green light chip and red phosphor powder, and the driving circuit comprising driving circuit modules for driving the first LEDs and the second LEDs respectively. The liquid crystal display includes the above-mentioned backlight module and the display panel.
Owner:BOE TECH GRP CO LTD +1

Pixel circuit for an active matrix OLED display

The invention relates to a circuit arrangement for organic light-emitting diodes arranged in a two-dimensional matrix. It can be used in particular in microdisplays. The object of the invention is to enable extensive influencing of the brightness and of the electromagnetic radiation emitted by the organic light-emitting diodes. With the circuit arrangement according to the invention, each organic light-emitting diode (5) can be driven by means of a storage circuit (10), a read amplifier (20) and a driver circuit (30). The driver circuit is formed by at least three series-connected transistors (1-3) and a further output transistor (4), the drain of which is connected to the anode of the respective organic light-emitting diode. In this case, a constant electrical operating voltage LVDD is applied to the source of the transistor (1) acting as driver, and a further likewise constant electrical operating voltage VDrive is applied to the gate of said transistor. The drain of the first transistor (1) is connected to the source of the transistor (2) which is connected in series next to said first transistor. Both gates of the following series-connected transistors (2, 3), which form a switch, are connected to the output of the read amplifier, and the electrical output voltage VSenseOut of said read amplifier is applied to said gates. The drains of the two transistors forming the switch are connected to the source of the output transistor (4), the gate of which is connected to ground potential or has a negative electrical voltage applied to it.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV

LED lamp box

The invention provides an LED lamp box, comprising a lamp box external frame and an LED reflector in the external frame, the LED reflector is formed by a plurality of independently-detachable reflector module groups, each reflector module group comprises a box body, the box body is provided with a transparent front cover and a rear cover; the inner of the box body is provided with at least a reflecting board, the reflecting surface of the reflecting board is opposite to the transparent front cover; and the reflecting board is provided with a plurality of LED installation parts. The LED lamp box is advantageous in that, via the sealed box body, an LED lamp is isolated from the outside world in use, preventing an LED light source from influencing brightness of the lamp box due to adsorbed dust; and the reflector module groups can separate the whole reflecting board into a plurality of module groups for assembly, a single module group is not only advantaged by light weight and small volume, but is also advantaged by accommodation in the box body, even a single person can easily complete installation or maintenance work, particularly for a bottom cover opening or side cover opening type lamp box, assembling and disassembling operations of the module group at the cover opening position can be easily performed in a very small operation space, and the lamp box structure can also make whole light of the lamp box be more uniform.
Owner:BEIJING LEL OPTIC ELECTRO TECH

Pixel circuits for active matrix oled displays

A circuit arrangement for organic light-emitting diodes can be arranged in a two-dimensional matrix. It can in particular be used with microdisplays. It can allow a wide influencing of the brightness of the electromagnetic radiation emitted by the organic light-emitting diodes. Every organic light-emitting diode can be controlled by means of a storage circuit, a sense amplifier and a driver circuit using the circuit arrangement. The driver circuit can be formed by at least three transistors connected in series and a further output transistor whose drain is connected to the anode of the respective organic light-emitting diode. In this respect, the transistor acting as the driver can have a constant electric operating voltage LVDD applied at its source and a further likewise constant electric operating voltage Vdrive is applied to its gate. The drain of the first transistor to the source of the following transistor connected to it in series and the two gates of the following transistors which form a switch and are connected in series are connected to the output of the sense amplifier and are acted on by its electric output voltage VSenseOut. The drains of the two transistors forming the switch are connected to the source of the output transistor whose gate is connected to ground potential or to which negative electric voltage is applied.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV

Display screen with mirror surface hiding effect

The invention discloses a display screen with a mirror surface hiding effect, which comprises a mirror surface display screen body and a frame. First positioning blocks which are symmetrically distributed are arranged on the upper side and the lower side of the mirror surface display screen body, mounting grooves corresponding to the first positioning blocks in position and number are formed in the front surface of the frame, and first positioning grooves are formed in the inner walls of the mounting grooves. According to the display screen with a mirror surface hiding effect, through cooperative use of the mirror surface display screen body, the frame, the first positioning blocks, first springs, fixing blocks, limiting rods, fixing grooves, the mounting grooves, the first positioning grooves, positioning plates, first through grooves, operation grooves and limiting blocks, the mirror surface display screen body is mounted in such a manner that disassembly of the frame is completely avoided, the mirror surface display screen body is convenient to overhaul and install, and meanwhile the installation mode of the mirror surface display screen body completely avoids a traditional buckle type fixing mode.
Owner:广东视安通智慧显控股份有限公司

Method for coloring lac and acid lac alcohol solution

ActiveCN100572425CSolidification does not produceColor without any adverse effectsAlcoholShellac
This invention relates to a method which is able to high efficiency color shellac and acidy shellac alcohols solution, lend itself to industrial production. This invention has follow steps: (1) first prepare shellac alcohols solution, add acidoid, adjust ph value for acidic; (2) Add micro crystalline cellulose prestained to above solution, the dosage is 0.1 to 40 percent of shellac alcohols solution weight. (3) Uniform mixing above solution; adopt whip vibration or neutral gas aeration method. The finished product is able to use as different kinds of toner, ink and dope for staining. Drying the liquid is able to obtain stained shellac.
Owner:天津天康源生物技术有限公司

Constant-current LED drive control circuit suitable for outdoor instrument

The invention discloses a constant-current LED drive control circuit suitable for an outdoor instrument in the technical field of integrated circuits. The constant-current LED drive control circuit comprises a power-on reset module; a control module connected to the power-on reset module; a constant current control module connected to the control module; a cathode driving module connected to the constant current control module and the control module; and an anode driving module connected to the control module. All components are integrated into a single-chip IC, the cost is low, the PCB designdifficulty is simplified, a control interface is simplified after single-chip integration, the IO resources of main control equipment are saved, the program development difficulty of the whole machine is reduced, the constant-current output of an SEG port is achieved, the LED brightness is not affected by external conditions, a high-quality display effect is achieved, a shadow elimination modulecapable of being automatically closed is designed at a COM port, and the power consumption is reduced.
Owner:WUXI I CORE ELECTRONICS

Electronic device and brightness control method

The invention discloses electronic equipment and a brightness control method, and belongs to the field of communication equipment. The electronic equipment comprises a display module, a processor and at least two photoelectric PN junctions, wherein the display module comprises a plurality of unit pixels; at least two photoelectric PN junctions are installed on at least two unit pixels in a one-to-one correspondence mode, all the photoelectric PN junctions are arranged on the display side of the display module, and the photoelectric PN junctions can change the output voltage value according to the received light intensity; the display module and each photoelectric PN junction are connected with the processor, the processor can adjust the brightness of the corresponding unit pixel according to the change value of the output voltage of each photoelectric PN junction, and the change value is in positive correlation with the brightness change condition of the corresponding unit pixel. According to the technical scheme, the problem that the cruising ability of current electronic equipment is poor can be relieved.
Owner:VIVO MOBILE COMM CO LTD

Time-sharing drive circuit for auto-stereoscopic display optical fiber backlight source

The invention discloses a time-sharing driving circuit for an auto-stereoscopic display optical fiber backlight source which comprises a 3D video signal, a control chip, a control chip power supply, aperiodic pulse duty ratio adjusting circuit, an MOS driving circuit, a driving power supply, three paths of light-emitting LEDs and an optical fiber bundle. The 3D video signal is connected with thecontrol chip to provide a pulse signal; the control chip power supply is connected with the control chip to provide power; the periodic pulse duty ratio adjusting circuit is connected with the controlchip so as to adjust the periodic pulse duty ratio output to the MOS drive circuit by the control chip. The control chip is connected with the MOS driving circuit to output a periodic pulse signal; the MOS driving circuit is connected with the three paths of light-emitting LEDs; and the three paths of LEDs are connected with the optical fiber bundle so as to guide light into the optical fibers. The left parallax image and the right parallax image played on the liquid crystal image display screen are projected to the left eye and the right eye of a viewer respectively, and naked eye 3D displayis achieved.
Owner:HUAQIAO UNIVERSITY

A kind of oled lighting screen body with light-emitting elements connected in series and preparation method thereof

The present invention provides an OLED lighting screen with series-connected light-emitting elements and a preparation method thereof, wherein the OLED lighting screen is divided into N light-emitting areas, and each light-emitting area includes M light-emitting elements connected in series. When different light-emitting elements in each light-emitting region act as anti-short-circuit resistors for each other, and when a short-circuit defect occurs in one light-emitting element, other light-emitting elements connected in series with it can play a role in preventing short-circuit. When M is greater than or equal to 2 and N is greater than or equal to 50, even if a short-circuit defect point appears in a certain light-emitting area, the current value in this light-emitting area will only decrease by less than 2%, so there is almost no effect on the brightness of the lighting screen. influences. That is to say, through the above solution, a very simple structure can be adopted to ensure that the brightness of the lighting screen body is not affected while achieving the effect of preventing short circuit.
Owner:GUAN YEOLIGHT TECH CO LTD

A mobile self-adjusting brightness LED lamp

The invention provides a self-adjustable brightness LED lamp which is easy to move, which includes a lamp tube, a bulb, a wiring chamber, a winch, a photosensitive resistor, a thermistor and a heat pipe. The bulb is installed on the right side of the lamp tube, and the winch is connected by a hinge shaft. Inside the wiring harness room, this design is convenient for the user to move the invention, which solves the problem that the original LED lamp cannot be moved, and the user cannot take it to the hand for lighting, which affects the normal use of the residents. On the upper end of the lamp tube, the thermistor is assembled inside the lamp tube, the battery is connected to the switch through wires, and the heat pipe is connected to the thermistor. This design solves the problem that the original LED lamp cannot adjust the brightness by itself. If the user forgets to When the power is cut off, the LED light keeps emitting light, which wastes electric energy, and when the LED light is continuously used, it will generate heat and increase the internal temperature, which will cause damage to the internal parts of the LED light. This invention saves resources, has comprehensive functions, is easy to move, and is practical Strong.
Owner:FRESH SOURCE INT INC

Power cable marking pile and burying method

The invention provides a power cable marking pile and a burying method, and belongs to the technical field of power construction, the power cable identification pile comprises an identification pile body and a base, and the identification pile body comprises a marking part arranged at the upper part and a burying part arranged at the lower part; the marking pile body is a hollow cylinder, and mounting surfaces which are symmetrical in pairs are arranged around the marking pile body; the burying part comprises a first long hole and a first round hole which are formed in the mounting surface of the lower part of the hollow cylinder; the base comprises a base and a supporting plate arranged on the base; a second round hole and a second long hole are formed in the supporting plate; the first long hole and the second round hole are connected through a screw rod with a limiting block; the first round hole and the second long hole are connected through a bolt. The height of the identification pile can be adjusted by adjusting the connecting position of the supporting plate and the identification pile body according to the depth of a foundation pit, the structure is simple and firm, operation is convenient, pedestrians, vehicles and constructors can be reminded, burying firmness is enhanced, and meanwhile the obvious warning effect is achieved.
Owner:国网河南省电力公司内乡县供电公司

Method for coloring lac and acid lac alcohol solution

ActiveCN101045791ASolidification does not produceColor without any adverse effectsAlcoholShellac
This invention relates to a method which is able to high efficiency color shellac and acidy shellac alcohols solution, lend itself to industrial production. This invention has follow steps: (1) first prepare shellac alcohols solution, add acidoid, adjust ph value for acidic; (2) Add micro crystalline cellulose prestained to above solution, the dosage is 0.1 to 40 percent of shellac alcohols solution weight. (3) Uniform mixing above solution; adopt whip vibration or neutral gas aeration method. The finished product is able to use as different kinds of toner, ink and dope for staining. Drying the liquid is able to obtain stained shellac.
Owner:天津天康源生物技术有限公司

Integrated sewing machine illuminating lamp

InactiveCN107588362ASolve problems that get in the way of workReduce volumeLighting applicationsLight source combinationsEngineeringLight source
The invention discloses an integrated sewing machine illuminating lamp. The lamp comprises a lamp body, the lamp body comprises a shell with an upper opening, a cover body which is used for sealing the upper opening, and a movable sheet which is connected onto the cover body in an opened and closed mode, and a magnetic device which is used for being attracted on a sewing machine portion is arranged on the movable sheet; a luminophor light source emission hole is formed in the shell, power devices, a luminescent lamp source and power devices which are used for providing power are arranged in the shell, and an outward convex power switch is arranged on the side surface of the shell; the movable sheet comprises a connection end, two separated connection ends are also arranged on the cover body in a downward convex mode, matched communication holes are formed in the connection ends of the movable sheet and the cover body, and the communication holes of the movable sheet and the cover bodyform a penetrating hole which a connection shaft can penetrate through. According to the integrated sewing machine illuminating lamp, the power devices which control lamplight are gathered in the shell, the size is greatly reduced, and the problem is solved that a long circuit influences the work.
Owner:郭佳艺
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