KR20230167688A - Clamshell type electronic device that detects light source and illuminance - Google Patents

Abstract

According to various embodiments, an electronic device is provided to be state switchable between a folded state and an unfolded state, and includes a housing including a common hole, a main display disposed on a first side of the housing, and a second side of the housing. It includes a sub-display disposed, an optical near-illuminance sensor capable of detecting light entering the interior of the housing through the first side, and a plurality of light-receiving elements capable of detecting light entering the interior of the housing through the second side. It may include an optical sensor that is electrically connected to the optical sensor and a processor that acquires ambient light source information and ambient brightness information based on light information received from the optical sensor.

Description

Clamshell type electronic device capable of detecting light source and illuminance {CLAMSHELL TYPE ELECTRONIC DEVICE THAT DETECTS LIGHT SOURCE AND ILLUMINANCE}

The disclosure below relates to a clamshell type electronic device capable of detecting a light source and illuminance.

Thanks to the remarkable development of information and communication technology and semiconductor technology, the distribution and use of various electronic devices is rapidly increasing. In particular, recent electronic devices can be carried and communicate, and may include one or more sensors to obtain various surrounding information. Sensors in electronic devices can acquire a variety of information, and the types of sensors can vary depending on the information to be acquired.

The electronic device may include at least one of a camera sensor, an ultra violet (UV) sensor, an iris sensor, a spectral sensor, an infrared sensor, an RGB sensor, an illuminance sensor, and/or a flicker sensor.

The electronic device may be implemented as a clamshell type. The electronic device can be folded in one direction. The electronic device may include a main display that functions in an unfolded state and a sub-display that functions in a folded state.

The purpose of one embodiment is to provide a clamshell type electronic device capable of detecting a light source and illuminance.

According to various embodiments, a clamshell-type electronic device capable of detecting a light source and illuminance is provided to be switchable between a folded state and an unfolded state, a housing including a common hole, and disposed on a first surface of the housing, A main display that is deformable depending on the state of the housing, a sub display that is disposed on the second side of the housing, a camera that is disposed in the housing and includes a flash, that is disposed in the housing and passes through the first side. An optical near-illuminance sensor capable of detecting light entering the interior of the housing, an optical sensor disposed on the housing and including a plurality of light-receiving elements capable of detecting light entering the interior of the housing through the second surface, the It may include a processor that is electrically connected to the optical sensor and acquires ambient light source information and ambient brightness information based on light information received from the optical sensor.

According to various embodiments, a clamshell-type electronic device capable of detecting a light source and illuminance is provided to be switchable between a folded state and an unfolded state, a housing including a common hole, and disposed on a first surface of the housing, A main display that is deformable depending on the state of the housing, a sub display that is disposed on the second side of the housing, and an optical device that is disposed in the housing and can detect light entering the interior of the housing through the first side. A light sensor, an optical sensor disposed in the housing and including a plurality of light-receiving elements capable of detecting light entering the interior of the housing through the second surface, electrically connected to the optical sensor, and from the optical sensor It may include a processor that obtains ambient light source information and ambient brightness information based on the received light information.

According to various embodiments, a clamshell-type electronic device capable of detecting a light source and illuminance is provided to be switchable between a folded state and an unfolded state, a housing including a common hole, and disposed on a first surface of the housing, A main display that is deformable depending on the state of the housing, a sub display that is disposed on the second side of the housing, a camera that is disposed in the housing and includes a flash, that is disposed in the housing and passes through the first side. An optical near-illuminance sensor capable of detecting light entering the interior of the housing, an optical sensor disposed on the housing and including a plurality of light-receiving elements capable of detecting light entering the interior of the housing through the second surface, the A processor electrically connected to an optical sensor, capable of acquiring ambient light source information and ambient brightness information based on light information received from the optical sensor, and adjusting brightness of the sub-display based on the ambient brightness information, the optical sensor , may include a sensor hub that is electrically connected to the sub-display and the processor and acquires the ambient light source information and ambient brightness information based on light information received from the optical sensor.

A clamshell type electronic device according to an embodiment is capable of detecting a light source and illuminance. Specifically, a clamshell type electronic device can not only determine the type of light source but also detect the intensity of illumination through a flicker sensor.

A clamshell-type electronic device according to an embodiment can adjust the brightness of an always-on display (AOD) through a separately provided sensor hub even when the processor is not operating. Clamshell type electronic devices can implement the brightness control function of an always-on display (AOD) without providing a separate hole on the back of the electronic device, and can operate in a low-power environment.

1 is a block diagram of an electronic device in a network environment according to various embodiments.
Figure 2 is a block diagram illustrating a camera module according to various embodiments.
Figure 3 is a block diagram showing the configuration of an image processing device according to various embodiments.
FIG. 4A is a rear view illustrating the rear of a device capable of simultaneously performing a lighting function and a light source detection function through a common hole (hereinafter referred to as a “light source detection device”) according to various embodiments.
Figure 4b is a cross-sectional view taken along the cut line I-I in Figure 4a.
FIG. 4C is a diagram schematically showing light receiving areas of a plurality of light receiving elements according to various embodiments.
FIG. 5A is a plan view schematically showing a printed circuit board, a flash, and a plurality of light receiving elements according to various embodiments.
Figure 5b is a cross-sectional view taken along the cut line II-II of Figure 5a.
Figure 5C is a block diagram of a light source sensing device according to various embodiments.
FIG. 6A is a side view schematically showing a clamshell-type electronic device according to various embodiments, and shows the electronic device in an unfolded state.
FIG. 6B is a side view schematically showing a clamshell-type electronic device according to various embodiments, and shows the electronic device in a folded state.
FIG. 7 is a block diagram schematically showing a clamshell type electronic device according to various embodiments.
FIG. 8 is a block diagram schematically showing a clamshell type electronic device according to various embodiments.
FIG. 9 is a block diagram schematically illustrating a process of measuring frequency by a clamshell-type electronic device according to various embodiments.
FIG. 10 is a block diagram schematically showing a clamshell type electronic device according to various embodiments.
FIG. 11 is a flowchart schematically illustrating a process in which a clamshell-type electronic device utilizes illuminance according to various embodiments.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. In the description with reference to the accompanying drawings, identical components will be assigned the same reference numerals regardless of the reference numerals, and overlapping descriptions thereof will be omitted.

FIG. 1 is a block diagram of an electronic device 101 in a network environment 100, according to various embodiments.

Referring to FIG. 1, in the network environment 100, the electronic device 101 communicates with the electronic device 102 through a first network 198 (e.g., a short-range wireless communication network) or a second network 199. It is possible to communicate with at least one of the electronic device 104 or the server 108 through (e.g., a long-distance wireless communication network). According to one embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108. According to one embodiment, the electronic device 101 includes a processor 120, a memory 130, an input module 150, an audio output module 155, a display module 160, an audio module 170, and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or may include an antenna module 197. In some embodiments, at least one of these components (eg, the connection terminal 178) may be omitted or one or more other components may be added to the electronic device 101. In some embodiments, some of these components (e.g., sensor module 176, camera module 180, or antenna module 197) are integrated into one component (e.g., display module 160). It can be.

The processor 120, for example, executes software (e.g., program 140) to operate at least one other component (e.g., hardware or software component) of the electronic device 101 connected to the processor 120. It can be controlled and various data processing or calculations can be performed. According to one embodiment, as at least part of data processing or computation, processor 120 stores commands or data received from another component (e.g., sensor module 176 or communication module 190) in volatile memory 132. The commands or data stored in the volatile memory 132 can be processed, and the resulting data can be stored in the non-volatile memory 134. According to one embodiment, the processor 120 includes the main processor 121 (e.g., a central processing unit or an application processor) or an auxiliary processor 123 that can operate independently or together (e.g., a graphics processing unit, a neural network processing unit ( It may include a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, if the electronic device 101 includes a main processor 121 and a secondary processor 123, the secondary processor 123 may be set to use lower power than the main processor 121 or be specialized for a designated function. You can. The auxiliary processor 123 may be implemented separately from the main processor 121 or as part of it.

The auxiliary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (e.g., sleep) state, or while the main processor 121 is in an active (e.g., application execution) state. ), together with the main processor 121, at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) At least some of the functions or states related to can be controlled. According to one embodiment, coprocessor 123 (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module 180 or communication module 190). there is. According to one embodiment, the auxiliary processor 123 (eg, neural network processing device) may include a hardware structure specialized for processing artificial intelligence models. Artificial intelligence models can be created through machine learning. For example, such learning may be performed in the electronic device 101 itself on which the artificial intelligence model is performed, or may be performed through a separate server (e.g., server 108). Learning algorithms may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but It is not limited. An artificial intelligence model may include multiple artificial neural network layers. Artificial neural networks include deep neural network (DNN), convolutional neural network (CNN), recurrent neural network (RNN), restricted boltzmann machine (RBM), belief deep network (DBN), bidirectional recurrent deep neural network (BRDNN), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the examples described above. In addition to hardware structures, artificial intelligence models may additionally or alternatively include software structures.

The memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176) of the electronic device 101. Data may include, for example, input data or output data for software (e.g., program 140) and instructions related thereto. Memory 130 may include volatile memory 132 or non-volatile memory 134.

The program 140 may be stored as software in the memory 130 and may include, for example, an operating system 142, middleware 144, or application 146.

The input module 150 may receive commands or data to be used in a component of the electronic device 101 (e.g., the processor 120) from outside the electronic device 101 (e.g., a user). The input module 150 may include, for example, a microphone, mouse, keyboard, keys (eg, buttons), or digital pen (eg, stylus pen).

The sound output module 155 may output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. Speakers can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.

The display module 160 can visually provide information to the outside of the electronic device 101 (eg, a user). The display module 160 may include, for example, a display, a hologram device, or a projector, and a control circuit for controlling the device. According to one embodiment, the display module 160 may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of force generated by the touch.

The audio module 170 can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module 170 acquires sound through the input module 150, the sound output module 155, or an external electronic device (e.g., directly or wirelessly connected to the electronic device 101). Sound may be output through the electronic device 102 (e.g., speaker or headphone).

The sensor module 176 detects the operating state (e.g., power or temperature) of the electronic device 101 or the external environmental state (e.g., user state) and generates an electrical signal or data value corresponding to the detected state. can do. According to one embodiment, the sensor module 176 includes, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, humidity sensor, or light sensor.

The interface 177 may support one or more designated protocols that can be used to connect the electronic device 101 directly or wirelessly with an external electronic device (eg, the electronic device 102). According to one embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102). According to one embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 can convert electrical signals into mechanical stimulation (e.g., vibration or movement) or electrical stimulation that the user can perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 can capture still images and moving images. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 can manage power supplied to the electronic device 101. According to one embodiment, the power management module 188 may be implemented as at least a part of, for example, a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101. According to one embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

Communication module 190 is configured to provide a direct (e.g., wired) communication channel or wireless communication channel between electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108). It can support establishment and communication through established communication channels. Communication module 190 operates independently of processor 120 (e.g., an application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., : LAN (local area network) communication module, or power line communication module) may be included. Among these communication modules, the corresponding communication module is a first network 198 (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (e.g., legacy It may communicate with an external electronic device 104 through a telecommunication network such as a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., LAN or WAN). These various types of communication modules may be integrated into one component (e.g., a single chip) or may be implemented as a plurality of separate components (e.g., multiple chips). The wireless communication module 192 uses subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199. The electronic device 101 can be confirmed or authenticated.

The wireless communication module 192 may support 5G networks after 4G networks and next-generation communication technologies, for example, NR access technology (new radio access technology). NR access technology provides high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low latency). -latency communications)) can be supported. The wireless communication module 192 may support high frequency bands (eg, mmWave bands), for example, to achieve high data rates. The wireless communication module 192 uses various technologies to secure performance in high frequency bands, for example, beamforming, massive array multiple-input and multiple-output (MIMO), and full-dimensional multiplexing. It can support technologies such as input/output (FD-MIMO: full dimensional MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module 192 may support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., second network 199). According to one embodiment, the wireless communication module 192 supports peak data rate (e.g., 20 Gbps or more) for realizing eMBB, loss coverage (e.g., 164 dB or less) for realizing mmTC, or U-plane latency (e.g., 164 dB or less) for realizing URLLC. Example: Downlink (DL) and uplink (UL) each of 0.5 ms or less, or round trip 1 ms or less) can be supported.

The antenna module 197 may transmit signals or power to or receive signals or power from the outside (e.g., an external electronic device). According to one embodiment, the antenna module 197 may include an antenna including a radiator made of a conductor or a conductive pattern formed on a substrate (eg, PCB). According to one embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected to the plurality of antennas by, for example, the communication module 190. can be selected Signals or power may be transmitted or received between the communication module 190 and an external electronic device through the at least one selected antenna. According to some embodiments, in addition to the radiator, other components (eg, radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module 197.

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, a mmWave antenna module includes: a printed circuit board, an RFIC disposed on or adjacent to a first side (e.g., bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., mmWave band); And a plurality of antennas (e.g., array antennas) disposed on or adjacent to the second side (e.g., top or side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (e.g., bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and signal ( (e.g. commands or data) can be exchanged with each other.

According to one embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199. Each of the external electronic devices 102 or 104 may be of the same or different type as the electronic device 101. According to one embodiment, all or part of the operations performed in the electronic device 101 may be executed in one or more of the external electronic devices 102, 104, or 108. For example, when the electronic device 101 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 may perform the function or service instead of executing the function or service on its own. Alternatively, or additionally, one or more external electronic devices may be requested to perform at least part of the function or service. One or more external electronic devices that have received the request may execute at least part of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may process the result as is or additionally and provide it as at least part of a response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology can be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of Things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to one embodiment, the external electronic device 104 or server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

Electronic devices according to various embodiments disclosed in this document may be of various types. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments of this document are not limited to the above-mentioned devices.

The various embodiments of this document and the terms used herein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various changes, equivalents, or replacements of the embodiments. In connection with the description of the drawings, similar reference numbers may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the above items, unless the relevant context clearly indicates otherwise. As used herein, “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B or C”, “at least one of A, B and C”, and “A Each of phrases such as “at least one of , B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof. Terms such as "first", "second", or "first" or "second" may be used simply to distinguish one component from another, and to refer to that component in other respects (e.g., importance or order) is not limited. One (e.g., first) component is said to be “coupled” or “connected” to another (e.g., second) component, with or without the terms “functionally” or “communicatively.” When mentioned, it means that any of the components can be connected to the other components directly (e.g. wired), wirelessly, or through a third component.

The term “module” used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as logic, logic block, component, or circuit, for example. can be used A module may be an integrated part or a minimum unit of the parts or a part thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document are one or more instructions stored in a storage medium (e.g., built-in memory 136 or external memory 138) that can be read by a machine (e.g., electronic device 101). It may be implemented as software (e.g., program 140) including these. For example, a processor (e.g., processor 120) of a device (e.g., electronic device 101) may call at least one command among one or more commands stored from a storage medium and execute it. This allows the device to be operated to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. A storage medium that can be read by a device may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves), and this term refers to cases where data is semi-permanently stored in the storage medium. There is no distinction between temporary storage cases.

According to one embodiment, methods according to various embodiments disclosed in this document may be included and provided in a computer program product. Computer program products are commodities and can be traded between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium (e.g. compact disc read only memory (CD-ROM)) or through an application store (e.g. Play StoreTM) or on two user devices (e.g. It can be distributed (e.g. downloaded or uploaded) directly between smart phones) or online. In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

According to various embodiments, each component (e.g., module or program) of the above-described components may include a single or plural entity, and some of the plurality of entities may be separately placed in other components. . According to various embodiments, one or more of the components or operations described above may be omitted, or one or more other components or operations may be added. Alternatively or additionally, multiple components (eg, modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each component of the plurality of components in the same or similar manner as those performed by the corresponding component of the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or , or one or more other operations may be added.

Figure 2 is a block diagram 200 illustrating a camera module 180, according to various embodiments.

Referring to FIG. 2, the camera module 280 (e.g., the camera module 180 in FIG. 1) includes a lens assembly 210, a flash 220, an image sensor 230, an image stabilizer 240, and a memory 250. ) (e.g. buffer memory), or may include an image signal processor 260.

The lens assembly 210 may collect light emitted from a subject that is the target of image capture. Lens assembly 210 may include one or more lenses. According to one embodiment, the camera module 280 may include a plurality of lens assemblies 210. In this case, the camera module 280 may form, for example, a dual camera, a 360-degree camera, or a spherical camera. Some of the plurality of lens assemblies 210 have the same lens properties (e.g., angle of view, focal length, autofocus, f number, or optical zoom), or at least one lens assembly is different from another lens assembly. It may have one or more lens properties that are different from the lens properties of . The lens assembly 210 may include, for example, a wide-angle lens or a telephoto lens.

The flash 220 may emit light used to enhance light emitted or reflected from a subject. According to one embodiment, the flash 220 may include one or more light emitting diodes (eg, red-green-blue (RGB) LED, white LED, infrared LED, or ultraviolet LED), or a xenon lamp.

The image sensor 230 may acquire an image corresponding to the subject by converting light emitted or reflected from the subject and transmitted through the lens assembly 210 into an electrical signal. According to one embodiment, the image sensor 230 is one image sensor selected from among image sensors with different properties, such as an RGB sensor, a BW (black and white) sensor, an IR sensor, or a UV sensor, and the same It may include a plurality of image sensors having different properties, or a plurality of image sensors having different properties. Each image sensor included in the image sensor 230 may be implemented using, for example, a charged coupled device (CCD) sensor or a complementary metal oxide semiconductor (CMOS) sensor.

The image stabilizer 240 moves at least one lens or image sensor 230 included in the lens assembly 210 in a specific direction in response to the movement of the camera module 180 or the electronic device 101 including the same. The operating characteristics of the image sensor 230 can be controlled (e.g., adjusting read-out timing, etc.). This allows to compensate for at least some of the negative effects of said movement on the image being captured. According to one embodiment, the image stabilizer 240 is a gyro sensor (not shown) or an acceleration sensor (not shown) disposed inside or outside the camera module 280. It is possible to detect such movement of the camera module 280 or the electronic device 101 using . According to one embodiment, the image stabilizer 240 may be implemented as, for example, an optical image stabilizer. The memory 250 may at least temporarily store at least a portion of the image acquired through the image sensor 230 for the next image processing task. For example, when image acquisition is delayed due to the shutter or when multiple images are acquired at high speed, the acquired original image (e.g., Bayer-patterned image or high-resolution image) is stored in the memory 250. , the corresponding copy image (eg, low resolution image) may be previewed through the display module 160. Thereafter, when a specified condition is satisfied (eg, user input or system command), at least a portion of the original image stored in the memory 250 may be obtained and processed, for example, by the image signal processor 260. According to one embodiment, the memory 250 may be configured as at least part of the memory 130 or as a separate memory that operates independently.

The image signal processor 260 may perform one or more image processes on an image acquired through the image sensor 230 or an image stored in the memory 250. The one or more image processes may include, for example, depth map creation, three-dimensional modeling, panorama creation, feature point extraction, image compositing, or image compensation (e.g., noise reduction, resolution adjustment, brightness adjustment, blurring). May include blurring, sharpening, or softening.

Additionally or alternatively, the image signal processor 260 provides control (e.g., exposure time control, or read-out timing control) for at least one of the components included in the camera module 280 (e.g., image sensor 230). etc.) can be performed. Images processed by image signal processor 260 are stored back in memory 250 for further processing or stored in external components of camera module 280 (e.g., camera module 180 of FIG. 1) (e.g., FIG. 1). may be provided as a memory 130, a display module 160, an electronic device 102, an electronic device 104, or a server 108). According to one embodiment, the image signal processor 260 may be configured as at least a part of a processor (eg, processor 120 in FIG. 1) or may be configured as a separate processor that operates independently of the processor. When the image signal processor 260 is configured as a separate processor from the processor, at least one image processed by the image signal processor 260 is sent to the display module (e.g., FIG. 1 ) as is or after additional image processing by the processor. It can be displayed through the display module 160).

According to one embodiment, an electronic device (eg, the electronic device 101 of FIG. 1) may include a plurality of camera modules 280, each with different properties or functions. In this case, for example, at least one of the plurality of camera modules 280 may be a wide-angle camera and at least another one may be a telephoto camera. Similarly, at least one of the plurality of camera modules 280 may be a front camera, and at least another one may be a rear camera.

Figure 3 is a block diagram showing the configuration of an image processing device according to various embodiments.

Referring to FIG. 3, a camera module (e.g., the camera module 180 of FIG. 1 and the camera module 280 of FIG. 2) according to various embodiments includes a main control unit 301, an image sensor module 310, and a light receiving module. (320), black level adjustment unit (331), digital gain adjustment unit (332), lens shading correction unit (333), automatic white balance statistics extraction unit (334), white balance control unit (335), color correction unit (336), It is provided with a gamma correction unit 337, a color information analysis unit 338, an image processing unit 339, a light source characteristic detection unit 340, and an automatic color adjustment control unit 350.

In various embodiments, the main control unit 301 includes an image sensor module 310, a light receiving module 320, a black level adjustment unit 331, a digital gain adjustment unit 332, a lens shading correction unit 333, and automatic white balance statistics. Extraction unit 334, white balance control unit 335, color correction unit 336, gamma correction unit 337, color information analysis unit 338, image processing unit 339, light source characteristic detection unit 340, and automatic It is connected to the color adjustment control unit 350 and controls the entire operation. The main control unit 301 provides, in particular, control signals that control the operating power of each functional unit, timing signals and sensor control signals of image sensors arranged in pixel units.

In various embodiments, the image sensor module 310 converts an optical signal projected through a camera lens into an electrical signal and generates a video signal to express the color of each pixel constituting the image. In the present invention, the image signal indicates the output value (R, G, B) of the image sensor module 310 in pixel units, and the image is an image formed by combining image signals in pixel units, such as a photo or video. It may be a frame included in . It should be noted that the output value per pixel is not limited to R, G, and B.

In various embodiments, the image sensor module 310 includes an image sensor array 311 consisting of a plurality of image sensors arranged according to the resolution of the image, and a power supply unit 313 that supplies operating power to the image sensor module 310. is provided. The image sensor array 311 is controlled by a timing signal and a sensor control signal, and the image signal of the image sensor array 311 is output to the black level adjuster 331 in accordance with the timing signal.

In various embodiments, the black level adjustment unit 331 receives an offset corresponding to the black level adjustment value and performs black level adjustment on the video signal. The black level can be adjusted by forcibly subtracting the offset from the image signal (R, G, B) and then compensated by exposure time or by a generalized formula. As another example, the black level for video signals (R, G, B) can be adjusted using a predetermined adjustment table. Meanwhile, the offset may be determined by a pre-measured black level. The black level can be measured by an image signal output in a state where light is blocked to prevent light from entering through the lens.

In various embodiments, the image signal whose black level has been adjusted is input to the digital gain adjuster 332, and the digital gain adjuster 332 maintains the brightness of the image signal whose black level has been adjusted by an AE (auto exposure) algorithm to be constant. Adjust to maintain.

In various embodiments, the lens shading correction unit 333 is a block that corrects the lens shading phenomenon in which the amount of light in the center and edge areas of the image is different, and receives lens shading settings from the automatic color adjustment control unit, and receives the lens shading setting value from the center and edge areas of the image. Corrects the color of the edge area. Furthermore, the lens shading correction unit 333 receives shading variables set differently depending on the type of light source from the automatic color adjustment control unit 350, and processes lens shading of the image according to the received variables. Accordingly, the lens shading correction unit 333 may perform lens shading processing by applying a different degree of shading depending on the type of light source.

In various embodiments, the white balance statistics extraction unit (AWB statics) 334 extracts statistical values required for the automatic color adjustment algorithm from the image and provides them to the automatic color adjustment control unit 350 so as to adjust the white balance of the image. do.

In various embodiments, the white balance control unit 335 adjusts the gain level of the image signal so that a white object can be accurately reproduced as white. The white balance control unit 335 corrects the white balance by multiplying the gain values (G gain (GG), R gain (GR), and B gain (GB)) for each of the R, G, and B signals of the video signal. Perform. The gain values (GR, GG, GB) are determined by the automatic color adjustment control unit 350.

In various embodiments, the color correction unit 336 performs color correction on the input image signal by calculating a color correction matrix. That is, the input signals of the R, G, and B channels can be performed through the operation of Equation 1 below to restore the color of the captured image by removing interference between the R, G, and B channels in the image sensor.

[Equation 1]

Here, R, G, and B are the output for each red, green, and blue channel of the image sensor, and R', G', and B' are signals for each red, green, and blue channel with minimal interference between R, G, and B channels. , CCM is a color correction matrix, a 3×3 matrix that minimizes interference in red, green, and blue channels.

Typically, gamma is a measure of the contrast state and refers to the slope of the characteristic curve, that is, the change in concentration/change in exposure amount. In display devices such as CRTs, the relationship between the electron beam current and the input voltage of the image signal is nonlinear, and the brightness of the image relative to the beam current is linear. In other words, the brightness of the image relative to the input voltage of the video signal is nonlinear. The gamma correction unit 337 performs gamma correction on the standard image signal so that the final image signal has linearity in consideration of the non-linear characteristics of the display device. The gamma correction unit 337 corrects non-linear characteristics of the display device.

In various embodiments, the image processor 339 performs image processing on the video signal to form an image from the video signal. The formed image is displayed on a display or the like, or stored in a memory or the like.

In various embodiments, the light receiving module 320 provided in the image device is provided close to the image sensor module 310, particularly the image sensor array 311, and detects an optical signal from an external light source. The optical signal detected by the light receiving module 320 is output to the light source characteristic detection unit 340 to be used to analyze the characteristics of the light source. Specifically, the light receiving module 320 includes at least a plurality of light receiving elements 321, a variable gain amplifier (VGA) 325 that adjusts the gain of the output value of the plurality of light receiving elements 321, and a light receiving module 320. ) is provided with a power supply unit 326 that supplies operating power.

In various embodiments, when measuring illuminance using light detected through a plurality of light receiving elements 321, illuminance in the visible light region may be measured separately. For example, the light receiving module 320 adds an optical filter capable of passing wavelengths in the visible light region at the front end of some of the plurality of light receiving elements 321 to detect the illuminance in the visible light region. It can be included. The optical filter may be coated directly on the light receiving element 321 or may be provided as a separate structure. Furthermore, in one embodiment, the light receiving module 320 detects the illuminance in the visible light region, but the present invention is not limited thereto. For example, the light receiving module 320 may detect the illuminance in the infrared region. . Accordingly, the light receiving module 320 may further include an optical filter capable of passing wavelengths in the infrared region at the front end of the light receiving element 321.

FIG. 4A is a rear view illustrating the rear of a device capable of simultaneously performing a lighting function and a light source detection function through a common hole (hereinafter referred to as a “light source detection device”) according to various embodiments, and FIG. 4B is a section in FIG. 4A. It is a cross-sectional view taken along line I-I, and FIG. 4C is a diagram schematically showing the light-receiving areas of a plurality of light-receiving elements according to various embodiments.

Referring to FIGS. 4A to 4C , the light source detection device may detect an external light source and determine the type and/or location of the external light source. The light source detection device may be, for example, a component of the sensor module 176 in FIG. 1 . A light source sensing device may have a function of detecting an external light source and may also have a lighting function. The light source detection device can determine the type and/or location of the external light source by analyzing light from the external light source while illuminating the outside using a flash.

In various embodiments, the light source sensing device includes a cover 410, a main condenser lens 420 connected to the cover 410, an interposer 490 disposed inside the cover 410, and an interposer. A printed circuit board 430 disposed on (490), a flash 440 (e.g., flash 420 in FIG. 2) disposed on the printed circuit board 430, and a plurality of light receiving elements 451 and 452. It may include (e.g., a plurality of light receiving elements 321 in FIG. 3) and an adhesive layer 491 for connecting the main condenser lens 420 to the inner surface of the cover 410.

In various embodiments, the cover 410 may form the exterior of an electronic device (eg, the electronic device 101 of FIG. 1). The cover 410 may include a back cover 411 and a front cover 412 that are coupled to each other, and a common hole 413 formed through the back cover 411. The back cover 411 may constitute the rear side of the electronic device, and the front cover 412 may constitute the front side of the electronic device. A display module (e.g., the display module 160 of FIG. 1) and a camera module (e.g., a lens of a front camera among the plurality of camera modules 280 of FIG. 2) may be disposed on the front cover 412. A camera module (e.g., a rear camera among the plurality of camera modules 208 in FIG. 2) and a flash (e.g., the flash 220 in FIG. 2) may be disposed on the back cover 412.

In various embodiments, the back cover 411 and the front cover 412 may be manufactured separately. The back cover 411 and the front cover 412 can be combined when all components of the electronic device are assembled. For example, after all components are placed on the front cover 412, the back cover 411 can be coupled to the front cover 412. As another example, after all the components are placed on the back cover 11, the front cover 412 can be coupled to the back cover 11. As another example, it should be noted that the cover 410 may be formed integrally.

In various embodiments, the common hole 413 provides a path for the flash 440 to irradiate light to the outside. The common hole 413 provides a path for the plurality of light receiving elements 451 and 452 to receive light from the outside. In other words, the light source detection device can perform a lighting function through the common hole 413 and simultaneously perform a light source detection function through the common hole 413. The shape of the common hole 413 is shown as a circle, but it is not limited thereto. The shape of the common hole 413 may have, for example, an elliptical shape or a polygonal shape. The central axis C of the common hole 413 refers to an imaginary line passing through the center of the common hole 413 and heading in the height direction (z-axis direction) of the light source sensing device. When the common hole 413 has a circular shape, the center of the common hole 413 corresponds to the center of the circle. When the common hole 413 has an oval shape, the center of the common hole 413 corresponds to the centers of the two foci. When the common hole 413 is a polygon, the center of gravity of the polygon is referred to as the center of the common hole 413.

In various embodiments, the main condenser lens 420 may assist in irradiating light from the flash 440 to the outside in a wide range. The main condenser lens 420 can assist light to effectively reach the plurality of light receiving elements 451 and 452 from an external light source. For example, the main condenser lens 420 may be a Fresnel lens consisting of continuous concentric grooves etched into plastic. For example, the center of the main condenser lens 420 (eg, the concentric groove) may be parallel to the central axis C of the common hole 413. The main condenser lens 420 may be attached to the cover 410 while maintaining a distance L1 from the flash 440, or may be attached directly to the flash 440.

In various embodiments, the main condenser lens 420 may be connected to the cover 410 to cover the common hole 413 from the inside. The main condenser lens 420 includes a core part 421 inserted inside the common hole 413, is provided on the lower side of the core part 422, has a larger diameter than the core part 421, and is attached to the back cover 411. It may include an inwardly facing flange part 422. The adhesive layer 491 may attach the flange part 422 to the back cover 411. The adhesive layer 491 may be formed in a ring shape. The adhesive layer 491 can seal to prevent water or foreign substances from entering the cover 410 from the outside.

In various embodiments, the interposer 490 may be provided inside the cover 410. For example, the interposer 490 may be disposed on the inner surface of the front cover 410 and face the lower surface of the main condenser lens 420. The interposer 490 includes a power source for supplying power to the flash 440 and the plurality of light receiving elements 451 and 452, a control unit for controlling the flash 440, and a plurality of light receiving elements 451 and 452. A variable gain amplifier (VGA) that adjusts the gain of the output value (e.g., variable gain amplifier 325 in FIG. 3), a processor for processing information received from the plurality of light receiving elements 451 and 452 (For example, the light source characteristic detection unit 340 of FIG. 3) may be provided.

In various embodiments, the printed circuit board 430 may be disposed on the upper surface of the interposer 490. The printed circuit board 430 may support a flash 440 and a plurality of light receiving elements 451 and 452, which will be described later. The printed circuit board 430 may include a plurality of connection lines to electrically connect various components provided in the interposer 490. The printed circuit board 430 may be a silicon wafer, but is not limited thereto.

In various embodiments, the flash 440 (e.g., the flash in FIG. 2) may generate light and irradiate it to the outside to illuminate the outside. Flash 440 may be disposed on a printed circuit board 430 . The distance L1 between the upper surface of the flash 440 and the lower surface of the main condenser lens 420 may serve as a factor to improve the performance of the flash 440. The distance L1 can be set, for example, in the range of 0.2 mm to 0.8 mm. Meanwhile, it should be noted that the upper surface of the flash 440 and the lower surface of the main condenser lens 420 may be in contact with each other. By appropriately designing the height of the interposer 490, the distance at which the flash 440 is separated from the main condenser lens 420 can be set. By arranging a power source, a control unit, a variable gain amplifier, a processor, etc. in the interposer 490 to set the distance between the flash 440 and the main condenser lens 420, the light source detection device can be implemented more compactly.

In various embodiments, the flash 440 may be provided in a position parallel to the central axis C of the common hole 413 in order to effectively perform the flash function. Here, being side by side means that the central axis C of the common hole 413 passes through the flash 440. For example, the center of the flash 440 may be located at a location where the central axis C of the common hole 413 passes. With this structure, the light emitted from the flash 440 can pass through the common hole 413 and be radiated symmetrically to the outside.

In various embodiments, the plurality of light receiving elements 451 and 452 (e.g., the plurality of light receiving elements 321 in FIG. 3) may receive light from the outside through the common hole 413. A plurality of light receiving elements 451 and 452 may be disposed on the printed circuit board 430. The plurality of light-receiving elements 451 and 452 include a first light-receiving element 451 provided at a position spaced apart from the flash 440 in a first direction (D1) and a second direction (D2) different from the first direction (D1). It may include a second light receiving element 452 provided at a spaced apart position.

In various embodiments, the first light receiving element 451 and the second light receiving element 452 may be arranged symmetrically with respect to the flash 440. For example, the first light receiving element 451 and the second light receiving element 452 may be provided on opposite sides of the flash 440 .

In various embodiments, as the flash 440 is provided in a position parallel to the central axis C of the common hole 413, the plurality of light receiving elements 451 and 452 are arranged at positions spaced apart from the central axis C. do. Even though the plurality of light-receiving elements 451 and 452 are disposed at positions spaced apart from the central axis C, the first light-receiving element 451 and the second light-receiving element 452 are located on opposite sides of the central axis C. As arranged, the plurality of light receiving elements 451 and 452 can secure an overall symmetrical light receiving area. In other words, the plurality of light receiving elements may have a symmetrical angle of view with respect to the central axis C.

Specifically, the first light receiving element 451 may be spaced apart from the central axis (C) of the common hole 413 in the first direction (D1, -x direction). Since the common hole 413 is biased in the +x direction with respect to the first light receiving element 451, the light receiving area A1 of the first light receiving element 451 may be formed to be biased in the +x direction. As a result, the first light receiving element 451 receives a relatively large amount of light in the area biased in the +x direction based on the central axis C, and receives light in the area biased in the -x direction based on the central axis C. You can receive relatively little.

Meanwhile, the second light receiving element 452 may be spaced apart from the central axis C of the common hole 413 in the second direction (D2, +x direction). Since the common hole 413 is biased in the -x direction with respect to the second light receiving element 452, the light receiving area A2 of the second light receiving element 451 may be formed to be biased in the -x direction. As a result, the second light receiving element 452 receives a relatively large amount of light in the area biased in the -x direction based on the central axis C, and receives light in the area biased in the +x direction based on the central axis C. You can receive relatively little.

In various embodiments, the first light receiving element 451 and the second light receiving element 452 are arranged symmetrically with respect to the flash 440, so that the overall light receiving area of the plurality of light receiving elements 451 and 452 is common. It may be formed symmetrically with respect to the central axis C of the hole 413. The light receiving area A1 of the first light receiving element 451 and the light receiving area A2 of the second light receiving element 452 may overlap each other near the central axis C. The area of the light receiving area A1 of the first light receiving element 451 that does not overlap with the light receiving area A2 of the second light receiving element 452 is formed at a position spaced apart from the central axis C in the +x direction. You can. The area of the light receiving area A2 of the second light receiving element 452 that does not overlap with the light receiving area A1 of the first light receiving element 451 is formed at a position spaced apart from the central axis C in the -x direction. You can.

FIG. 5A is a plan view schematically showing a printed circuit board, a flash, and a plurality of light receiving elements according to various embodiments, FIG. 5B is a cross-sectional view taken along the cutting line II-II of FIG. 5A, and FIG. 5C is various embodiments. This is a block diagram of a light source detection device according to .

Referring to FIGS. 5A to 5C , a flash 540 and a plurality of light receiving elements 551 and 552 may be disposed on the printed circuit board 530. The flash 540 may be disposed in a position parallel to the central axis C of the common hole (eg, the common hole 413 in FIG. 4A). In other words, the central axis C may pass through the flash 540.

In various embodiments, the plurality of light receiving elements 551 and 552 may be positioned symmetrically about the flash 540. For example, the first light receiving element 551 and the second light receiving element 552 may be disposed on opposite sides of the flash 540 . The first light receiving element 551 may be located at a position spaced apart from the flash 540 in the first direction (D1, -x direction), and the second light receiving element 552 may be located at a position spaced apart from the flash 540 in the second direction (D1, -x direction). D2, can be located at a location spaced apart in the +x direction). For example, the distance between each of the plurality of first light receiving elements 551 from the flash 540 may be approximately the same, but is not limited thereto. For example, the distance at which each of the plurality of first light receiving elements 551 is separated from the flash 540 may be individually appropriately set. Likewise, the distances of each of the plurality of second light receiving elements 552 from the flash 540 may be approximately the same, but it is not limited thereto.

In various embodiments, the flash 540 is shown as having a rectangular shape, but it is not limited thereto. For example, flash 540 may have another polygonal shape or circular shape.

In various embodiments, the first light receiving element 551 may be any one of a photo-transistor, a photo-diode, and a photo IC disposed on the printed circuit board 530. In addition, it may include any device that receives light.

Here, a brief description of the photodiode is as follows.

In various embodiments, the photodiode is a typical PN photodiode that is formed on a P-type silicon substrate and converts light energy into electrical energy, and has a P-type region and an N-type region forming a PN junction on the silicon substrate. It is made by doping.

At this time, in the case of a typical bipolar process to form a PN junction, the P-type region can be formed as a base, and the N-type region can be formed as an N-epi or emitter, and a typical CMOS In the case of a process, the P-type region can be formed as P+ Source/Drain or P Sub, and the N-type region can be formed as N Well or N+ Source/Drain. .

Likewise, the second light-receiving element 552 may be any one of a photo-transistor, a photo-diode, and a photo IC formed on the printed circuit board 530. In addition, it may include any device that receives light. Of course, the first light receiving element and the second light receiving element may be the same element or may be different elements.

In various embodiments, light is received by the first light receiving element 551 and the second light receiving element 552 disposed on the printed circuit board 530, and a signal converted into electrical energy is transmitted to the first light receiving element 551 and the second light receiving element 552. 2 When output from the light receiving element 552, a metal wire (not shown) for transmitting the output signal to a peripheral circuit, that is, the processor 580, may be placed on the printed circuit board 530. The metal wiring is for connecting signals between the first light-receiving element 551, the second light-receiving element 552, and a peripheral circuit, such as the processor 580, and is connected to the first light-receiving element 551 and the second light-receiving element ( 552) It can be formed to be connected to each part. Of course, the metal wiring may be formed as a single layer, but may also be formed as a plurality of layers.

In various embodiments, a plurality of each of the first and second light receiving elements 551 and 552 may be provided. For example, the first light receiving elements 551 and the second light receiving elements 552 may be provided in an even number, for example, 4, but are not limited thereto. Each of the first plurality of light-receiving elements 551 and the plurality of second light-receiving elements 552 may be arranged in a row and side by side in the y-axis direction. For example, the plurality of first light receiving elements 551 may include four light receiving elements 551a, 551b, 551c, and 551d sequentially arranged in the y-axis direction.

In various embodiments, the light source sensing device may include a plurality of filters 560 that cover some of the plurality of light receiving elements 551 and 552. For example, the plurality of filters 560 cover some (e.g., half) of the first light receiving elements 551 among the plurality of first light receiving elements 551, and cover the plurality of second light receiving elements 552. ) may cover a portion (for example, half) of the second light receiving elements 552. Note that in Figure 5a, the filter 560 is shown omitted.

In various embodiments, the filter 560 receives incident light output from a measurement light source and passes light in the visible light band among the wavelength bands included in the incident light. That is, the filter may be a band pass filter (BPF) that passes light in the 300 to 700 [nm] wavelength band.

In various embodiments, among the plurality of first light receiving elements 551, the first light receiving elements 551b and 551d that are not covered by the filter 560 receive incident light output from a light source, that is, a measurement light source for measuring illuminance. Receives and outputs an electrical signal for the received incident light. Here, incident light refers to light including visible light and infrared bands. The first light receiving elements 551b and 551d not covered by the filter 560 can receive light having a wavelength of 400 to 1000 nm, corresponding to the visible light band and the infrared band.

In various embodiments, among the plurality of first light receiving elements 551, the first light receiving elements 551a and 551c covered by the filter 560 receive light in the visible light band for the measurement light source passed by the filter 560. Receives and outputs an electrical signal for the received light in the visible light band. The first light receiving elements 551a and 551c covered by the filter 560 can receive light having a wavelength of 400 to 700 [nm], corresponding to the visible light band.

In various embodiments, the first light receiving elements 551a and 551c covered by the filter 560 among the plurality of first light receiving elements 551, and the first light receiving elements 551a and 551c covered by the filter 560 among the plurality of first light receiving elements 551. The uncovered first light receiving elements 551b and 551d may be arranged alternately. For example, the first light receiving element 551a, the first light receiving element 551b, the first light receiving element 551c, and the first light receiving element 551d may be arranged sequentially. In other words, a first light receiving element among the plurality of first light receiving elements 551 covered by the filter 560, and a first light receiving element not covered by the filter 560 among the plurality of first light receiving elements 551. can form a pair. Using the two first light-receiving elements that form a pair, the ratio of the infrared component can be obtained.

In various embodiments, the same applies to the plurality of second light receiving elements 552. A portion (eg, half) of the second light receiving elements 552 are covered by the filter 560 and may receive light having a wavelength corresponding to the visible light band. The remaining (eg, the other half) second light receiving element 552 is not covered by the filter 560 and can receive light having wavelengths corresponding to the visible light band and the infrared band.

In various embodiments, the processor 580 (e.g., the light source characteristic detection unit 340 in FIG. 3) detects the first light received from a light receiving element not covered by the filter 560 among the plurality of light receiving elements 551 and 552. Calculate the amount (CH1), the amount of second light (CH2) received by the light receiving element covered by the filter 560, and an index obtained by subtracting the amount of second light (CH2) from the amount of first light (CH1), and , the ratio of the index to the first amount of light (CH1) can be calculated.

In various embodiments, the processor 580 calculates the ratio of the infrared component of the incident light to the measurement light source using the electrical signal output from the plurality of first light receiving elements 551, and calculates the ratio of the infrared component of the incident light based on the calculated ratio of the infrared component. The type of light source measured can be determined. For example, the processor 580 may distinguish whether the light source measured in the light receiving area is fluorescent light, incandescent light, or sunlight based on the ratio of the infrared component. For example, sunlight may have a relatively larger infrared component ratio than incandescent lighting, and fluorescent lighting may have a relatively smaller infrared component ratio than incandescent lighting.

In various embodiments, the processor 580 may transmit information about the type of light source to an automatic color adjustment control unit (eg, the automatic color adjustment control unit 350 of FIG. 3).

In various embodiments, the infrared component ratio varies from the amount (CH1) of light received by the first light receiving elements 551b and 551d not covered by the filter 560 to that covered by the filter 560 for each light source. It can be calculated by subtracting the amount of light (CH2) received from the first light receiving elements 551a and 551c and dividing it by the amount of light (CH1) received from the first light receiving elements 551b and 551d. In other words, the ratio of the infrared component may be (CH1-CH2)/CH1.

In various embodiments, when calculating the ratio of the infrared component, for more precise ratio measurement, the amount of light received from the first light receiving elements 551b and 551d not covered by the filter 560 (CH1) and the filter ( A coefficient may be applied to each of the amounts (CH2) of light received by the first light receiving elements 551a and 551c covered by 560). For example, the ratio of the infrared component may be (a*CH1-b*CH2)/CH1. Here, a and b may be coefficients applied to CH1 and CH2, respectively.

Likewise, the processor 580 calculates the ratio of the infrared component of the incident light to the measured light source using the electrical signals output from the plurality of second light receiving elements 552, and calculates the ratio of the infrared component of the incident light to the measured light source based on the calculated ratio of the infrared component. type can be determined.

In various embodiments, the processor 580 may separately calculate the ratio of infrared components for each of the first plurality of light-receiving elements 551 and the plurality of second light-receiving elements 552. Since the light-receiving areas of the first plurality of light-receiving elements 551 and the light-receiving areas of the plurality of second light-receiving elements 552 are different, the processor 580 can individually determine the type of light source for each light-receiving area. . For example, the processor 580 indicates that the light source corresponding to the light-receiving area of the first plurality of light-receiving elements 551 is an incandescent lamp, and the light source corresponding to the light-receiving area of the plurality of second light-receiving elements 552 is sunlight. You can decide. The processor 580 can determine the type and location of the light source through the first light-receiving element 551 and the second light-receiving element 552, which are provided on opposite sides of the flash 540 and have different light-receiving areas. . In this case, automatic white balance can be applied individually for each zone. When two or more light sources affect the photo, the processor 580 can provide the consumer with a photo with more accurate automatic white balance. For example, when two different light sources exist, the processor 580 selects an area mainly affected by one of the two different light sources, an area mainly affected by the other light source, and the two light sources. By dividing areas that are affected roughly equally, you can perform different automatic white balances for each.

In various embodiments, the processor 580 aggregates all information received from the plurality of first light receiving elements 551 and the plurality of second light receiving elements 552 to determine the overall light receiving area, that is, the plurality of first light receiving elements 552. The type of light source in the light-receiving area that combines the light-receiving area of 551 and the light-receiving areas of the plurality of second light-receiving elements 552 can be determined. According to this configuration, the light source detection device can determine the type of light source for each light-receiving area of each light-receiving element, and can also determine the type of light source in the overall light-receiving area of all light-receiving elements.

FIG. 6A is a side view schematically showing a clamshell-type electronic device according to various embodiments, and shows the electronic device in an unfolded state. FIG. 6B is a side view schematically showing a clamshell-type electronic device according to various embodiments, and shows the electronic device in a folded state.

Referring to FIGS. 6A and 6B , the electronic device (eg, the electronic device 100 of FIG. 1 ) may be a clamshell type. The electronic device includes a housing 610 capable of switching states between a folded state and an unfolded state, a main display 620 disposed on the first side of the housing 610, and the housing. A sub-display 640 disposed on the second surface of 610, a camera disposed in the housing 610 (e.g., camera module 180 in FIG. 1), and an optical near-ilitude sensor disposed in the housing 610. (630, optical proximity sensor), an optical sensor 650 disposed in the housing 610, and a processor electrically connected to the optical proximity sensor 630 and the optical sensor 650 and disposed in the housing 610 ( 660).

In various embodiments, the main display 620 and the sub display 640 may be provided on opposite sides of the housing 610. Hereinafter, the surface on which the main display 620 is disposed may be referred to as the first side, and the surface on which the sub-display 640 is disposed may be referred to as the second surface. Based on when the housing 610 is in a folded state, the first side may be an inner side, and the second side may be an outer side.

In various embodiments, the housing 610 may accommodate various components of an electronic device. The housing 610 may configure the exterior of the electronic device. FIG. 6A shows the housing 610 in an unfolded state, and FIG. 6B shows the housing 610 in a folded state. The housing 610 may include a first housing 611 and a second housing 612 rotatably connected to the first housing 611.

In various embodiments, the main display 620 may be disposed on the first side of the housing 610. The main display 620 may be provided to be deformable depending on the state of the housing 610. For example, when the housing 610 is folded, the main display 620 may be folded corresponding to the shape of the housing 610. The main display 620 may be turned on when the housing 610 switches from the folded state to the unfolded state. The main display 620 may be turned off when the housing 610 is converted from the unfolded state to the folded state.

In various embodiments, the optical illuminance sensor 630 is disposed in the housing 610 and may detect light entering the interior of the housing 610 through the first surface. The optical roughness sensor 630 may transmit light information entering the interior of the housing 610 through the first surface to the processor 660.

The sub-display 640 may be disposed on the second side of the housing 610. The sub-display 640 may be maintained in an on state when the housing 610 is in a folded state. The sub-display 640 may function as an always-on display (AOD). For example, the sub-display 640 may display at least one of time, remaining battery capacity, weather, or photos.

In various embodiments, the optical sensor 650 may detect light entering the interior of the housing 610 through the second surface. The optical sensor 650 may be a flicker sensor. The optical sensor 650 includes a plurality of light-receiving elements (e.g., a plurality of light-receiving elements 551a, 551b, 551c, and 551d in FIG. 5B) and a plurality of filters (e.g., a plurality of filters 560 in FIG. 5B). can do. The light sensor 650 may transmit the sensed light information to the processor 660.

In various embodiments, the processor 660 is electrically connected to the optical near-illuminance sensor 630 and the light sensor 650, and provides ambient light source information and ambient brightness information based on light information received from the light sensor 650. It can be obtained. The processor 660 may obtain ambient light source information. For example, the processor 660 may determine whether the ambient light source is sunlight, incandescent light, fluorescent light, or a light emitting diode (LED). The processor 660 may obtain ambient brightness information. For example, the processor 660 may determine an intensity of illumination value of ambient brightness.

In various embodiments, processor 660 may determine ambient light source information. Sunlight, incandescent lamps, fluorescent lamps, or light emitting diodes (LEDs) each have different wavelength spectra. The processor 660 may determine ambient light source information based on an index value based on light information measured by the optical sensor 650. For example, the optical sensor 650 may include a plurality of light receiving elements. Some of the plurality of light receiving elements may be covered by the filter, and others may not be covered by the filter. For example, the filter may pass light in the visible light band. The processor 660 provides an index obtained by subtracting the amount of first light received from the light receiving element not covered by the filter, the amount of second light received from the light receiving element covered by the filter, and the amount of second light from the amount of first light. can be calculated, and the type of light source can be determined based on the ratio of the index to the amount of first light.

In various embodiments, processor 660 may determine ambient brightness information. The processor 660 may perform Fast Fourier Transform (FFT) to measure the frequency of light information measured by the optical sensor 650. The processor 660 may determine ambient brightness information based on the frequency of light information. For example, the processor 660 may process data multiple times and determine ambient brightness information using the average value.

In various embodiments, when the housing 610 is in a folded state, the optical light sensor 630 is covered by the housing 610, and the optical sensor 650 may detect external light. When the housing 610 is in a folded state, the processor 660 determines ambient light source information and ambient brightness information based on light information transmitted from the light sensor 650, and adjusts the brightness of the sub-display 640. You can.

FIG. 7 is a block diagram schematically showing a clamshell type electronic device according to various embodiments.

Referring to FIG. 7 , the electronic device may include an optical sensor 750, a processor 760, and a sub-display 740. Light information detected by the light sensor 750 may be transmitted to the processor 760. The processor 760 may determine ambient light source information and ambient brightness information based on light information. The processor 760 may adjust the brightness of the sub-display 740 based on at least one of ambient light source information and ambient brightness information.

In various embodiments, the optical sensor 750 may have a flicker sensing function. The light sensor 750 is also referred to as an ambient light sensor (ALS) or a flicker sensor. The optical sensor 750 and processor 760 may measure the frequency of external lighting to remove flicker caused by external lighting.

In various embodiments, the optical sensor 750 may include a microcontroller unit (MCU). The optical sensor 750 may independently perform Fast Fourier Transform (FFT) to determine the frequency of external lighting.

In various embodiments, the optical sensor 750 may not include a microcontroller unit (MCU). The optical sensor 750 may transmit optical information to the processor 760 without determining the frequency of external lighting on its own. The processor 760 may determine the frequency for external lighting by performing Fast Fourier Transform (FFT). If a separate microcontroller unit is not provided for the optical sensor 750, the size of the optical sensor 750 may be relatively small.

FIG. 8 is a block diagram schematically showing a clamshell type electronic device according to various embodiments.

Referring to FIG. 8 , the electronic device may include a sub-display 840, an optical sensor 850, a processor 860, and a sensor hub 890.

In various embodiments, the sensor hub 890 is electrically connected to the optical sensor 850, the sub-display 840, and the processor 860, and provides ambient light source information based on light information received from the optical sensor 850. and ambient brightness information can be obtained. The sensor hub 890 can adjust the brightness of the sub-display 840. For example, the sensor hub 890 relatively brightens the brightness of the sub-display 840 when the surrounding brightness is relatively bright, and relatively darkens the brightness of the sub-display 840 when the surrounding brightness is relatively dark. can do.

In various embodiments, the sensor hub 890 can independently adjust the brightness of the sub-display 840 when the camera (eg, camera module 180 of FIG. 1) and the processor 860 are not operating. For example, the sensor hub 890 may adjust the brightness of the sub-display 840 while the processor 860 is off. When the processor 860 is off, the sensor hub 890 can adjust the brightness of the sub-display 840, so the electronic device operates the always-on display (AOD) of the sub-display 840 in a low-power mode. ) function can be implemented. The sensor hub 890 can calculate the illuminance.

In various embodiments, the electronic device includes a first channel 881 connecting the optical sensor 850 and the processor 860, and a second channel 882 connecting the optical sensor 850 and the sensor hub 890. and a third channel 883 connecting the sensor hub 890 and the processor 860. The first channel 881 may transmit light information detected by the light sensor 850 to the processor 860. The second channel 882 may transmit light information detected by the light sensor 850 to the sensor hub 890. The third channel 883 may transmit information temporarily stored in the sensor hub 890 to the processor 860.

FIG. 9 is a block diagram schematically illustrating a process of measuring frequency by a clamshell-type electronic device according to various embodiments.

Referring to FIG. 9, the optical sensor may include a First In First Out (FIFO) part 950. Processor 960 may be separate from first-in-first-out part 950 of the optical sensor. The processor 960 may include a controller unit that performs Fast Fourier Transform (FFT). The processor 960 can detect frequency information of a light source of 10Hz to 500Hz.

FIG. 10 is a block diagram schematically showing a clamshell type electronic device according to various embodiments.

Referring to FIG. 10, the electronic device includes a plurality of light receiving elements 1010, an analog-digital converter (1020), a first in first out (FIFO) part 1050, an interface 1071, It may include a processor 1060 and a sensor hub 1090.

In various embodiments, the plurality of light receiving elements 1010 may include a first light receiving element 1011, a second light receiving element 1012, and a third light receiving element 1013. For example, the first light receiving element 1011 may receive light in the visible light region. For example, the second light receiving element 1012 may receive both visible light and infrared light, or may receive only infrared light. The third light receiving element 1013 can receive light in the ultraviolet ray region. It should be noted that the number of light-receiving elements 1010 and the light-receiving area of each element are not limited thereto.

In various embodiments, the analog-to-digital converter 1020 may be integrated into one and connected to a plurality of light receiving elements 1010. As another example, a plurality of analog-to-digital converters 1020 may be provided. For example, the analog-to-digital converter 1020 includes a first converter 1021 connected to the first light-receiving element 1011, a second converter 1022 connected to the second light-receiving element 1012, and a third light-receiving element. It may include a third converter 1023 connected to the element 1013.

FIG. 11 is a flowchart schematically illustrating a process in which a clamshell-type electronic device utilizes illuminance according to various embodiments.

Referring to FIG. 11, the electronic device may adjust the brightness of the main display based on external brightness information, for example, illuminance information. The processor can adjust the brightness of the main display in the following order. The electronic device determines the front illuminance based on the light information detected by the optical near-illuminance sensor (e.g., the optical near-illuminance sensor 630 in FIG. 6A) and the optical sensor (e.g., the optical sensor 650 in FIG. 6a). The rear illumination intensity can be determined based on the light information detected.

In various embodiments, the processor may include detecting a change in the ambient illuminance value (S1), comparing the front illuminance and the back illuminance (S2), using the front illuminance (S3), and It may include a step of comparing the value with a reference value (S4), a step of using the back illuminance (S5), and a step of using the front illuminance (S5).

In step S1, the processor may detect a change in the ambient illuminance value. For example, the processor detects a change in the brightness of light detected by an optical near-illuminance sensor (e.g., optical near-illuminance sensor 630 in FIG. 6A) and/or an optical sensor (e.g., optical sensor 650 in FIG. 6a). It can be detected.

In step S2, the processor may compare the front illuminance and the back illuminance.

In step S3, the processor may utilize the front illuminance if the front illuminance is higher than the back illuminance. Here, utilizing the front illuminance means adjusting the brightness level of the main display based on changes in the front illuminance. For example, when the front illumination is lowered, the processor can relatively dim the brightness of the main display.

In step S4, the processor may compare the value of the back illuminance with a reference value. For example, the processor can utilize the back illuminance if the back illuminance is equal to or higher than the front illuminance. For example, the reference value may be 200 lux. Please note that the standard value is not limited to this.

In step S5, the processor may adjust the brightness of the main display based on the back illuminance if the back illuminance is less than 200 lux.

In step S5, the processor may adjust the brightness of the main display based on the front illuminance when the rear illuminance is equal to or greater than 200 lux.

According to various embodiments, a clamshell-type electronic device capable of detecting a light source and illuminance is provided to be switchable between a folded state and an unfolded state, a housing including a common hole, and disposed on a first surface of the housing, A main display that is deformable depending on the state of the housing, a sub display that is disposed on the second side of the housing, a camera that is disposed in the housing and includes a flash, that is disposed in the housing and passes through the first side. An optical near-illuminance sensor capable of detecting light entering the interior of the housing, an optical sensor disposed on the housing and including a plurality of light-receiving elements capable of detecting light entering the interior of the housing through the second surface, the It may include a processor that is electrically connected to the optical sensor and acquires ambient light source information and ambient brightness information based on light information received from the optical sensor.

In various embodiments, the processor may adjust the brightness of the sub-display based on the ambient brightness information.

In various embodiments, when the housing is in a folded state, the optical near-illuminance sensor is covered by the housing, and the optical sensor is capable of detecting external light.

In various embodiments, the flash irradiates light to the outside through the common hole, and the optical sensor detects light entering the inside of the housing from the outside through the common hole.

In various embodiments, the electronic device may further include a filter that covers some of the plurality of light-receiving elements.

In various embodiments, the processor may determine the amount of first light received by a light receiving element not covered by the filter among the plurality of light receiving elements, the amount of second light received by the light receiving element covered by the filter, and the first light receiving element. An index may be calculated by subtracting the amount of second light from the amount of first light, and the ambient light source information may be obtained based on the ratio of the index to the amount of first light.

In various embodiments, the filter may pass light in the visible light band among the light received through the pass hole.

In various embodiments, the processor may obtain the ambient brightness information based on frequency information of light detected by the plurality of light receiving elements.

In various embodiments, the electronic device further includes a sensor hub that is electrically connected to the optical sensor, the sub-display, and the processor, and acquires the ambient light source information and ambient brightness information based on light information received from the optical sensor. It can be included.

In various embodiments, the electronic device connects the optical sensor and the processor, connects the optical sensor and the sensor hub to a first channel for transmitting the optical information detected by the optical sensor, and connects the optical sensor and the sensor hub to transmit the optical information detected by the optical sensor. It may include a second channel that transmits light information, and a third channel that connects the sensor hub and the processor and transmits light information detected by the light sensor.

In various embodiments, the sensor hub can independently adjust the brightness of the sub-display when the camera and processor are not operating.

In various embodiments, when the housing is in an unfolded state, the processor may adjust the brightness of the main display based on information detected by each of the optical near-ilitude sensor and the light sensor.

In various embodiments, the display may perform automatic white balance (AWB) on the image acquired from the camera based on the ambient light source information.

In various embodiments, the processor may determine the frequency of the optical information by performing Fast Fourier Transform (FFT).

In various embodiments, the processor may adjust the brightness of the main display by comparing light information measured by each of the optical near-illuminance sensor and the light sensor.

According to various embodiments, a clamshell-type electronic device capable of detecting a light source and illuminance is provided to be switchable between a folded state and an unfolded state, a housing including a common hole, and disposed on a first surface of the housing, A main display that is deformable depending on the state of the housing, a sub display that is disposed on the second side of the housing, and an optical device that is disposed in the housing and can detect light entering the interior of the housing through the first side. A light sensor, an optical sensor disposed in the housing and including a plurality of light-receiving elements capable of detecting light entering the interior of the housing through the second surface, electrically connected to the optical sensor, and from the optical sensor It may include a processor that obtains ambient light source information and ambient brightness information based on the received light information.

In various embodiments, the processor may adjust the brightness of the sub-display based on the ambient brightness information.

In various embodiments, the electronic device may further include a filter that covers some of the plurality of light-receiving elements.

In various embodiments, the processor may determine the amount of first light received by a light receiving element not covered by the filter among the plurality of light receiving elements, the amount of second light received by the light receiving element covered by the filter, and the first light receiving element. Calculate an index by subtracting the amount of the second light from the amount of first light, obtain the ambient light source information based on the ratio of the index to the amount of the first light, and frequency information of the light detected by the plurality of light receiving elements. Based on this, the surrounding brightness information can be obtained.

According to various embodiments, a clamshell-type electronic device capable of detecting a light source and illuminance is provided to be switchable between a folded state and an unfolded state, a housing including a common hole, and disposed on a first surface of the housing, A main display that is deformable depending on the state of the housing, a sub display that is disposed on the second side of the housing, a camera that is disposed in the housing and includes a flash, that is disposed in the housing and passes through the first side. An optical near-illuminance sensor capable of detecting light entering the interior of the housing, an optical sensor disposed on the housing and including a plurality of light-receiving elements capable of detecting light entering the interior of the housing through the second surface, the A processor electrically connected to an optical sensor, capable of acquiring ambient light source information and ambient brightness information based on light information received from the optical sensor, and adjusting brightness of the sub-display based on the ambient brightness information, the optical sensor , may include a sensor hub that is electrically connected to the sub-display and the processor and acquires the ambient light source information and ambient brightness information based on light information received from the optical sensor.

Claims (20)

A housing that can be switched between a folded state and an unfolded state and includes a common hole;
a main display disposed on a first surface of the housing and deformable according to the state of the housing;
a sub-display disposed on a second side of the housing;
a camera disposed in the housing and including a flash;
An optical illuminance sensor disposed in the housing and capable of detecting light entering the interior of the housing through the first surface;
an optical sensor disposed in the housing and including a plurality of light-receiving elements capable of detecting light entering the interior of the housing through the second surface; and
A clamshell type electronic device capable of detecting a light source and illuminance, including a processor electrically connected to the optical sensor and acquiring at least one of ambient light source information and ambient brightness information based on light information received from the optical sensor. Device.
According to claim 1,
A clamshell type electronic device capable of detecting a light source and illuminance, wherein the processor is capable of adjusting the brightness of the sub-display based on the ambient brightness information.
According to claim 2,
When the housing is in a folded state, the optical illuminance sensor is covered by the housing, and the optical sensor is capable of detecting external light. A clamshell type electronic device capable of detecting a light source and illuminance.
According to claim 3,
The flash irradiates light to the outside through the common hole, and the optical sensor detects light entering the inside of the housing from the outside through the common hole. A clamshell type electronic device capable of detecting a light source and illuminance.
According to claim 4,
A clamshell type electronic device capable of detecting a light source and illuminance, further comprising a filter covering some of the plurality of light receiving elements.
According to claim 5,
The processor may determine the amount of first light received by a light-receiving element not covered by the filter among the plurality of light-receiving elements, the amount of second light received by the light-receiving element covered by the filter, and the amount of the first light. A clamshell type electronic device capable of detecting a light source and illuminance, calculating an index by subtracting the amount of second light, and acquiring the ambient light source information based on a ratio of the index to the amount of first light.
According to claim 5,
A clamshell type electronic device capable of detecting a light source and illuminance, wherein the filter passes light in the visible light band among the light received through the passage hole.
According to claim 4,
The processor is a clamshell type electronic device capable of detecting a light source and illuminance, wherein the processor acquires the ambient brightness information based on frequency information of light detected by the plurality of light receiving elements.
According to claim 1,
A clamshell-type electronic device capable of detecting a light source and illuminance, further comprising a sensor hub electrically connected to the optical sensor, sub-display, and processor, and acquiring the ambient brightness information based on light information received from the optical sensor. .
According to clause 9,
a first channel connecting the optical sensor and the processor and transmitting light information detected by the optical sensor;
a second channel connecting the optical sensor and the sensor hub and transmitting optical information detected by the optical sensor; and
A clamshell-type electronic device capable of detecting a light source and illuminance, further comprising a third channel connecting the sensor hub and the processor and transmitting light information detected by the optical sensor.
According to clause 9,
The sensor hub is a clamshell type electronic device capable of detecting a light source and illuminance and independently adjusting the brightness of the sub-display when the camera and processor are not operating.
According to clause 9,
When the housing is in an unfolded state, the processor is capable of adjusting the brightness of the main display based on information detected by each of the optical illuminance sensor and the light sensor. A clamshell type electronic device capable of detecting a light source and illuminance.
According to clause 9,
The display is a clamshell type electronic device capable of detecting a light source and illuminance, wherein the display performs automatic white balance (AWB) on the image acquired from the camera based on the ambient light source information.
According to claim 1,
A clamshell-type electronic device capable of detecting a light source and illuminance, wherein the processor determines the frequency of the light information by performing Fast Fourier Transform (FFT).
According to claim 1,
The processor is a clamshell type electronic device capable of detecting a light source and illuminance, adjusting the brightness of the main display by comparing light information measured by each of the optical illuminance sensor and the light sensor.
A housing that can be switched between a folded state and an unfolded state and includes a common hole;
a main display disposed on a first surface of the housing and deformable according to the state of the housing;
a sub-display disposed on a second side of the housing;
An optical illuminance sensor disposed in the housing and capable of detecting light entering the interior of the housing through the first surface;
an optical sensor disposed in the housing and including a plurality of light-receiving elements capable of detecting light entering the interior of the housing through the second surface; and
A clamshell-type electronic device capable of detecting a light source and illuminance, including a processor electrically connected to the optical sensor and acquiring ambient light source information and ambient brightness information based on light information received from the optical sensor.
According to claim 16,
A clamshell type electronic device capable of detecting a light source and illuminance, wherein the processor is capable of adjusting the brightness of the sub-display based on the ambient brightness information.
According to claim 16,
A clamshell type electronic device capable of detecting a light source and illuminance, further comprising a filter covering some of the plurality of light receiving elements.
According to claim 18,
The processor may determine the amount of first light received by a light-receiving element not covered by the filter among the plurality of light-receiving elements, the amount of second light received by the light-receiving element covered by the filter, and the amount of the first light. Calculate an index by subtracting the amount of second light, and obtain the ambient light source information based on the ratio of the index to the amount of first light,
A clamshell type electronic device capable of detecting a light source and illuminance, acquiring the ambient brightness information based on frequency information of light detected by the plurality of light receiving elements.
A housing that can be switched between a folded state and an unfolded state and includes a common hole;
a main display disposed on a first surface of the housing and deformable according to the state of the housing;
a sub-display disposed on a second side of the housing;
a camera disposed in the housing and including a flash;
An optical illuminance sensor disposed in the housing and capable of detecting light entering the interior of the housing through the first surface;
an optical sensor disposed in the housing and including a plurality of light-receiving elements capable of detecting light entering the interior of the housing through the second surface;
a processor electrically connected to the optical sensor, capable of acquiring ambient light source information and ambient brightness information based on light information received from the optical sensor, and controlling brightness of the sub-display based on the ambient brightness information; and
A clamshell capable of detecting a light source and illuminance, including a sensor hub that is electrically connected to the optical sensor, sub-display, and processor and acquires the ambient light source information and ambient brightness information based on the light information received from the optical sensor. Type electronic device.

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