WO2014132465A1 - 電子機器 - Google Patents
電子機器 Download PDFInfo
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- WO2014132465A1 WO2014132465A1 PCT/JP2013/071711 JP2013071711W WO2014132465A1 WO 2014132465 A1 WO2014132465 A1 WO 2014132465A1 JP 2013071711 W JP2013071711 W JP 2013071711W WO 2014132465 A1 WO2014132465 A1 WO 2014132465A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
- H04N23/661—Transmitting camera control signals through networks, e.g. control via the Internet
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/13—Edge detection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00204—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
- H04N1/00244—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server with a server, e.g. an internet server
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
- H04N23/632—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
- H04N23/88—Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
Definitions
- the present invention relates to an electronic device.
- the conventional technology has a problem that the usability of the camera is deteriorated because image processing is always performed by a server.
- the electronic device includes a processing unit that processes an imaging signal captured by the imaging unit, a communication unit that can transmit the imaging signal captured by the imaging unit to an external device, and imaging of the imaging unit. And a determination unit that determines whether to transmit the imaging signal to the external device according to the setting.
- the communication unit transmits information related to the processing content of the processing unit to the external device.
- the communication unit transmits at least one of the specification and the parameter of the processing unit to the external device.
- the electronic device includes a recording unit that records a moving image and a still image on a recording medium, and the determining unit records the moving image. When recording on a medium, it is preferable to transmit an imaging signal to an external device.
- the setting unit that can set the imaging unit to the moving image mode and the still image mode, and the determination unit When the mode is set, it is preferable to transmit the imaging signal to an external device.
- the electronic device described in the fifth aspect includes a display unit that displays a live view of an image processed by the external device.
- the electronic device includes a processing unit that processes an imaging signal captured by the imaging unit, a communication unit that can transmit the imaging signal captured by the imaging unit to an external device, an imaging unit, And a determination unit that determines whether to transmit an imaging signal to an external device according to at least one heat generation state with the processing unit.
- the determining unit determines whether to transmit the imaging signal to the external device according to the heat generation state of the communication unit.
- the electronic device according to the seventh or eighth aspect further includes a temperature detection unit that detects at least one temperature of the imaging unit, the processing unit, and the communication unit.
- the recording device that records the moving image and the still image on the recording medium
- the determining unit records the moving image.
- the electronic device includes a processing unit that processes an imaging signal captured by the imaging unit, a communication unit that can transmit the imaging signal captured by the imaging unit to an external device, and heat generation of the communication unit.
- a determination unit that determines whether to transmit an imaging signal to an external device according to a state.
- the electronic device of the eleventh aspect it is preferable that a temperature detection unit for detecting the temperature of the communication unit is provided.
- the communication unit preferably transmits the imaging signal and information regarding the processing unit to the external device.
- FIG. 5 is a flowchart of live view processing executed by a first control unit 21. It is a flowchart of the live view process which the 1st control part 21 concerning a 2nd embodiment performs.
- 3 is a time chart showing switching between the first ASIC 14 and the second ASIC 102 accompanying a temperature change of the image sensor 12.
- 2 is a diagram illustrating an example of connecting a plurality of cameras to one server 100.
- FIG. 1 is a block diagram showing a configuration of a photographing system according to the first embodiment of the present invention.
- the imaging system 1 includes a camera 10 and a server 100.
- the camera 10 and the server 100 are connected via a network 80 such as a LAN or WAN, for example, and can perform bidirectional data communication.
- the camera 10 is a so-called lens-integrated digital camera in which a subject image formed by an optical system 11 including a plurality of lens groups is imaged by an imaging element 12 such as a CMOS or CCD to obtain image data.
- the camera 10 includes an A / D converter 13, a first ASIC 14, a display unit 15, a recording medium 16, an operation unit 17, a first memory 18, a first communication unit 19, a temperature sensor 20, and a first control unit 21.
- the A / D converter 13 converts the analog image signal output from the image sensor 12 into a digital image signal.
- the first ASIC 14 performs various image processing (for example, color interpolation processing, gradation conversion processing, contour enhancement processing, white balance adjustment processing, image compression processing, etc.) on the digital image signal output from the A / D converter 13. Circuit.
- the first ASIC 14 outputs the digital image signal subjected to the above image processing to the display unit 15 and the recording medium 16.
- the image sensor 12 and the first ASIC 14 are arranged close to each other in the housing of the camera 10, and in the case of moving image capturing and moving image processing, the processing of the image sensor 12 and the first ASIC 14 increases, and accordingly. Heat generation raises the temperature of the image sensor 12 and the first ASIC 14.
- the display unit 15 is a display device configured by, for example, a liquid crystal panel, and displays an image (still image, moving image) based on the digital image signal output from the first ASIC 14, various operation menu screens, and the like.
- the recording medium 16 is a portable recording medium such as an SD card (registered trademark), for example, and records an image file based on the digital image signal output from the first ASIC 14.
- the operation unit 17 includes operation members such as a release switch for instructing a shooting preparation operation and a shooting operation, a touch panel for performing various settings, and a mode dial for selecting a shooting mode. When the user operates these operation members, the operation unit 17 outputs an operation signal corresponding to the operation to the first control unit 21. Note that a still image and a moving image may be instructed by a release switch, or a moving image capturing switch dedicated for moving images may be provided.
- the mode dial of the present embodiment can set at least a plurality of still image modes and a moving image mode.
- the first memory 18 is a non-volatile semiconductor memory such as a flash memory, for example, and stores in advance a control program and control parameters for the first control unit 21 to control the camera 10.
- the first communication unit 19 is a communication circuit that performs data communication with the server 100 via the network 80, for example, by wireless communication.
- the temperature sensor 20 is provided in the vicinity of the image sensor 12 and detects the temperature of the image sensor 12 (that is, the heat generation state of the image sensor 12).
- the first control unit 21 includes a microprocessor, a memory, and peripheral circuits (not shown), and controls the entire camera 10 by reading a predetermined control program from the first memory 18 and executing it.
- the server 100 includes a second communication unit 101, a second ASIC 102, a second memory 104, and a second control unit 106.
- the second communication unit 101 is a communication circuit that performs data communication with the camera 10 via the network 80, for example, by wireless communication.
- the second ASIC 102 is a circuit that performs the same image processing as the first ASIC 14 on the digital image signal.
- the second memory 104 is a non-volatile semiconductor memory such as a flash memory, for example, and stores in advance a control program and control parameters for the second control unit 106 to control the server 100.
- the second memory 104 can store image data that has been subjected to various image processes by the second ASIC 102 in addition to the control program and control parameters described above.
- live view display of the camera 10 When the power supply of the camera 10 is on, the first control unit 21 performs a so-called live view display on the display unit 15.
- the first control unit 21 causes the image sensor 12 to capture a subject image, and causes the A / D converter 13 to output a digital image signal of the subject image.
- the mode dial of this embodiment can set a plurality of still images and a moving image.
- the first ASIC 14 changes the live view display process depending on whether the mode dial is a still image or a moving image.
- the live view image is generated by reducing the amount of calculation of the first ASIC 14 by thinning the image pickup of the image sensor 12, while in the moving image mode.
- the image sensor 12 and the first ASIC 14 generate a live view image at the same resolution as the moving image recording size. That is, in the present embodiment, the heat generation amount of the image sensor 12 and the first ASIC 14 is larger in the live view in the moving image mode than in the live view in the still image mode.
- the first control unit 21 causes the first ASIC 14 in the camera 10 to process this digital image signal based on the operation state of the camera 10 (whether the live view is in the still image mode or the moving image mode), or the first control unit 21 in the server 100 2 Determine whether the ASIC 102 is to be processed.
- the first control unit 21 determines that the first ASIC 14 processes the digital image signal
- the first ASIC 14 displays on the display unit 15 image data (through image) created by performing various image processing on the digital image signal. To do.
- the first control unit 21 determines that the second ASIC 102 processes the digital image signal
- the first control unit 21 outputs the digital image signal output from the A / D converter 13 to the first communication unit 19.
- the server 100 When receiving the digital image signal via the second communication unit 101, the second control unit 106 in the server 100 causes the second ASIC 102 to process the received digital image signal.
- the second ASIC 102 performs various image processing on the digital image signal to create image data (through image).
- the second control unit 106 transmits the image data (through image) created by the second ASIC 102 to the camera 10 via the second communication unit 101.
- the first control unit 21 in the camera 10 receives this image data (through image) via the first control unit 21 and displays it on the display unit 15.
- FIG. 2 is a flowchart of live view processing executed by the first control unit 21.
- this flowchart starts in the case of live view in the moving image mode.
- step S ⁇ b> 01 the first control unit 21 determines whether wireless communication by the first communication unit 19 is possible. If the first communication unit 19 is in a wireless communicable state, the process proceeds to step S02.
- step S02 the first control unit 21 determines whether or not the temperature of the image sensor 12 detected by the temperature sensor 20 is equal to or lower than a predetermined threshold (for example, 70 degrees). If the temperature of the image sensor 12 is equal to or lower than the predetermined threshold value, the process proceeds to step S03. In step S03, the first control unit 21 determines whether or not the amount of image processing (calculation amount) necessary for creating image data (through image) is equal to or greater than a predetermined threshold value. If the amount of image processing is greater than or equal to the predetermined threshold, the process proceeds to step S04.
- the predetermined threshold value may be set as appropriate in increments of 5 degrees.
- step S04 the first control unit 21 transmits a part of the digital image signal output from the A / D converter 13 to the server 100 by wireless communication via the first communication unit 19.
- step S05 the first ASIC 14 of the camera 10 and the second ASIC 102 of the server 100 share the digital image signal and perform image processing.
- the first control unit 21 displays the image data (through image) on the display unit 15 at a rate of 60 frames per second, the first control unit 21 sends the A / D converter 13 at a rate of 60 times per second.
- odd frames are output to the first ASIC 14, and even frames are transmitted to the server 100 by the first communication unit 19.
- the first ASIC 14 executes odd-frame image processing
- the second ASIC 102 executes even-frame image processing.
- step S ⁇ b> 06 the first control unit 21 transmits the digital image signal output from the A / D converter 13 to the server 100 by wireless communication via the first communication unit 19.
- step S07 the second ASIC 102 of the server 100 executes image processing on the digital image signal received via the second communication unit 101 to create image data (through image).
- step S01 when the camera 10 and the server 100 cannot perform wireless communication, for example, because the camera 10 is far away from the wireless communication base station, the process proceeds to step S08.
- step S08 the first control unit 21 determines whether or not the temperature of the image sensor 12 detected by the temperature sensor 20 is equal to or lower than a predetermined threshold value. If the temperature of the image sensor 12 is equal to or lower than the predetermined threshold value, the process proceeds to step S09.
- step S09 the first controller 21 inputs the digital image signal output from the A / D converter 13 to the first ASIC 14, causes the first ASIC 14 to perform image processing on the digital image signal, and outputs image data (through). Create a picture).
- step S ⁇ b> 10 the first control unit 21 changes the live view in the moving image mode to the live view in the still image mode to reduce the processing amount of the image sensor 12 and the first ASIC 14.
- the first control unit 21 determines whether wireless communication by the first communication unit 19 is possible, the temperature of the image sensor 12 detected by the temperature sensor 20, and the image processing amount (image processing by the first ASIC 14). Whether or not to transmit a digital image signal to the server 100 is determined with reference to the operation states of the three cameras 10 (load, amount of calculation).
- the first control unit 21 causes the second ASIC 102 of the server 100 to process the digital image signal output from the A / D converter 13 when wireless communication is possible (when an affirmative determination is made in step S01). As a result, the calculation load of the first ASIC 14 is reduced and the amount of heat generated by the first ASIC 14 is reduced, so that an increase in the temperature of the image sensor 12 is suppressed.
- the imaging system according to the second embodiment has the same configuration as the imaging system according to the first embodiment except that a temperature sensor (not shown) is provided in the vicinity of the first communication unit 19. This temperature sensor (not shown) detects the temperature of the first communication unit 19. Similar to the first ASIC 14, the first communication unit 19 generates heat as the communication amount (data amount to be exchanged) increases, and gives the image sensor 12 provided in the same housing the amount of heat corresponding to the communication amount. .
- the first control unit 21 of the present embodiment determines whether wireless communication by the first communication unit 19 is possible, the temperature of the image sensor 12 detected by the temperature sensor 20, and the image processing amount (image processing by the first ASIC 14). Whether to transmit a digital image signal to the server 100 with reference to the temperature of the first communication unit 19 detected by a temperature sensor (not shown) in addition to the three camera 10 operating states (load, calculation amount). To decide.
- FIG. 3 is a flowchart of live view processing executed by the first control unit 21 according to the second embodiment.
- the first control unit 21 determines whether wireless communication by the first communication unit 19 is possible. If the first communication unit 19 is in a state where wireless communication is possible, the process proceeds to step S12.
- step S12 the first control unit 21 determines whether or not the temperature of the image sensor 12 detected by the temperature sensor 20 is equal to or lower than a predetermined threshold value. If the temperature of the image sensor 12 is equal to or lower than the predetermined threshold value, the process proceeds to step S13. In step S ⁇ b> 13, the first control unit 21 determines whether the amount of image processing (calculation amount) necessary for creating image data (through image) is equal to or greater than a predetermined threshold value. If the amount of image processing is equal to or greater than the predetermined threshold, the process proceeds to step S14.
- step S14 the first control unit 21 transmits a part of the digital image signal output from the A / D converter 13 to the server 100 by wireless communication via the first communication unit 19.
- step S05 the first ASIC 14 of the camera 10 and the second ASIC 102 of the server 100 share the digital image signal and perform image processing.
- step S16 the first control unit 21 determines whether or not the temperature of the first communication unit 19 detected by a temperature sensor (not shown) is equal to or lower than a predetermined threshold (for example, 60 degrees). If the temperature of the first communication unit 19 is equal to or lower than the predetermined threshold value, the process proceeds to step S17.
- step S ⁇ b> 17 the first control unit 21 transmits the digital image signal output from the A / D converter 13 to the server 100 by wireless communication via the first communication unit 19.
- step S18 the second ASIC 102 of the server 100 executes image processing on the digital image signal received via the second communication unit 101 to create image data (through image).
- step S16 If the temperature of the first communication unit 19 exceeds the predetermined threshold value in step S16, the process proceeds to step S14.
- steps S ⁇ b> 14 and S ⁇ b> 15, as described above the first control unit 21 converts a part of the digital image signal output from the A / D converter 13 to the server 100 by wireless communication via the first communication unit 19.
- the temperature threshold value of the first communication unit 19 may be set as appropriate in increments of 5 degrees.
- the first control unit 21 stops the transmission of the digital image image to the server 100 by the first communication unit 19 when the temperature of the first communication unit 19 is equal to or higher than a specified value.
- image processing by the first ASIC 14 may be performed.
- step S11 the processing (steps S19 to S21) when wireless communication between the camera 10 and the server 100 cannot be performed (steps S08 to S10 in FIG. 2 described in the first embodiment). Since it is the same, description is abbreviate
- the imaging system according to the third embodiment has a configuration in which the temperature sensor 20 is removed from the imaging system according to the first embodiment.
- the first control unit 21 causes the first ASIC 14 to perform image processing when shooting a still image in the still image shooting mode, and performs image processing on the second ASIC 102 of the server 100 when shooting a moving image in the moving image shooting mode. Let it be done.
- the first control unit 21 determines whether to cause the first ASIC 14 to perform image processing or to cause the second ASIC 102 to perform image processing according to the photographing mode as described above.
- the configuration and control can be simplified.
- the through image created by the first ASIC 14 is output to the display unit 15 in substantially real time, whereas the through image created by the second ASIC 102 is connected to the first communication unit 19 and the second image. It is necessary to perform wireless communication with the communication unit 101, which may cause a delay.
- the first control unit 21 buffers the through image output from the first ASIC 14 and the through image received by the first communication unit 19 in a memory (not shown) so that the through image is always displayed. You may make it delay only fixed time (for example, 0.5 second). Thereby, even if a delay occurs in the through image transmitted from the server 100, the through image displayed on the display unit 15 is smoothly continuous.
- FIG. 4 is a time chart showing switching between the first ASIC 14 and the second ASIC 102 accompanying a temperature change of the image sensor 12.
- FIG. 4 for simplicity of explanation, it is assumed that the first ASIC 14 and the second ASIC 102 do not perform image processing in a shared manner as in steps S04 and S05 in FIG.
- image processing by the first ASIC 14 is started, and live view display on the display unit 15 is started.
- the first ASIC 14 repeatedly performs image processing after time t1 to generate heat, and the temperature of the image sensor 12 rises. Thereafter, at time t2, the temperature of the image sensor 12 detected by the temperature sensor 20 exceeds the threshold value.
- the first control unit 21 starts transmission of the digital image signal output from the A / D converter 13 to the server 100, but also executes image processing by the first ASIC 14 in parallel.
- the first control unit 21 stops the image processing by the first ASIC 14 at time t3 when a time sufficient to absorb the delay associated with wireless communication has elapsed.
- the first ASIC 14 After time t3, the first ASIC 14 does not perform image processing, so the amount of heat generated is extremely small, and the temperature rise of the image sensor 12 is suppressed. As a result, at time t4, the temperature of the image sensor 12 detected by the temperature sensor 20 becomes equal to or lower than the threshold value. In response to this, the first control unit 21 resumes the image processing by the first ASIC 14, but also performs transmission of the digital image signal to the server 100 in parallel as at time t ⁇ b> 2. Then, at the aging t ⁇ b> 5 when a certain time has elapsed, the first control unit 21 stops transmitting the digital image signal to the server 100. In this way, by superimposing the operations of both ASICs at the time of switching, the influence of delay associated with communication can be minimized.
- FIG. 1 a photographing system in which one camera 10 and one server 100 are connected via a network 80 is illustrated.
- a plurality of cameras may be connected to one server, or a plurality of servers and a plurality of servers may be connected.
- the camera may be connected to each other.
- FIG. 5 shows an example in which a plurality of cameras (camera 10, camera 30, camera 50) are connected to one server 100.
- the camera 10, the camera 30, and the camera 50 create captured image data by different image processing. More specifically, the first ASIC 14 included in the camera 10, the third ASIC 34 included in the camera 30, and the fifth ASIC 54 included in the camera 50 have different contents of image processing that can be executed. Therefore, even when the same analog image signal is output from the image sensor 12, the image data created by the first ASIC 14, the image data created by the third ASIC 34, and the image data created by the fifth ASIC 54 are For example, colors and textures are different from each other.
- the server 100 shown in FIG. In addition to the second ASIC 102 capable of executing image processing equivalent to the first ASIC 14, a fourth ASIC 112 capable of executing image processing equivalent to the third ASIC 34 and a sixth ASIC 122 capable of executing image processing equivalent to the fifth ASIC 54 are provided. . That is, the image data created by the image processing of the fourth ASIC 112 is substantially the same as the image data created by the image processing of the third ASIC 34.
- the control unit of each camera transmits information regarding the contents of image processing executed by each ASIC to the server 100 together with the digital image signal.
- This information may be, for example, the model name of the camera, information indicating the specifications (color, white balance, texture, etc.) of each ASIC, or parameters of image processing executed by each ASIC. .
- the second control unit 106 determines which ASIC is to process the digital image signal received together with the information based on the received information regarding the content of the image processing. For example, the second control unit 106 causes the fourth ASIC 112 to process a digital image signal received from the camera 30.
- the temperature sensor 20 is provided in the vicinity of the image sensor 12, and the first control unit 21 determines whether or not to transmit a digital image signal based on the temperature of the image sensor 12 detected by the temperature sensor 20.
- the temperature sensor 20 may be provided in the vicinity of the first ASIC 14 to determine whether or not the digital image signal can be transmitted based on the temperature of the first ASIC 14 instead of the image sensor 12.
- transmission of the digital image signal is performed based on a time-series change (temperature gradient) of the temperature detected by the temperature sensor 20. You may decide whether it is possible.
- the temperature sensor 20 may be provided in the vicinity of each of the image sensor 12 and the first ASIC 14.
- An external device other than the server 100 may be provided outside the camera 10 to receive a digital image signal from the camera 10 and perform image processing.
- a personal computer a so-called smartphone, a tablet type (slate type) It may be a portable electronic device such as a computer.
- the lens-integrated digital camera has been described as an example.
- the present invention is not limited to such an embodiment.
- it can be applied to portable electronic devices such as so-called single-lens reflex digital cameras with interchangeable lenses, interchangeable digital cameras without a quick return mirror (mirrorless cameras), and tablet computers.
- portable electronic devices such as so-called single-lens reflex digital cameras with interchangeable lenses, interchangeable digital cameras without a quick return mirror (mirrorless cameras), and tablet computers.
- a single-lens reflex digital camera is provided with a live view button and a switch for performing live view display, and in this case, it is possible to set a moving image live view and a still image live view.
- the first embodiment can be applied.
- the present invention is not limited to the above-described embodiments, and other forms conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention. .
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Abstract
Description
本発明の第2の態様によると、第1の態様の電子機器において、通信部は、処理部の処理の内容に関する情報を外部機器に送信することが好ましい。
本発明の第3の態様によると、第2の態様の電子機器において、通信部は、処理部の仕様とパラメータとの少なくとも一方の情報を外部機器に送信することが好ましい。
本発明の第4の態様によると、第1~3のいずれか一態様の電子機器において、動画と静止画とを記録媒体に記録させる記録部を備え、決定部は、記録部が動画を記録媒体に記録させる際に、撮像信号を外部機器に送信することが好ましい。
本発明の第5の態様によると、第1~4のいずれか一態様の電子機器において、撮像部を動画モードと静止画モードとに設定可能な設定部と、決定部は、設定部により動画モードが設定された場合に、撮像信号を外部機器に送信することが好ましい。
本発明の第6の態様によると、第5記載の電子機器は、外部機器で処理された画像をライブビュー表示する表示部を備える。
本発明の第7の態様によると、電子機器は、撮像部が撮像した撮像信号を処理する処理部と、撮像部が撮像した撮像信号を外部機器に送信可能な通信部と、撮像部と、処理部との少なくとも一方の発熱状態に応じて、撮像信号を外部機器に送信するかどうかを決定する決定部と、を備える。
本発明の第8の態様によると、第7の態様の電子機器において、決定部は、通信部の発熱状態に応じて、撮像信号を外部機器に送信するかどうかを決定することが好ましい。
本発明の第9の態様によると、第7または8の態様の電子機器において、撮像部と、処理部と、通信部との少なくとも1つの温度を検出する温度検出部を備えることが好ましい。
本発明の第10の態様によると、第7~9のいずれか一態様の電子機器において、動画と静止画とを記録媒体に記録させる記録部を備え、決定部は、記録部が動画を記録媒体に記録させる際に、撮像信号を外部機器に送信することが好ましい。
本発明の第11の態様によると、電子機器は、撮像部が撮像した撮像信号を処理する処理部と、撮像部が撮像した撮像信号を外部機器に送信可能な通信部と、通信部の発熱状態に応じて、撮像信号を外部機器に送信するかどうかを決定する決定部と、を備える。
本発明の第12の態様によると、第11の態様の電子機器において、通信部の温度を検出する温度検出部を備えることが好ましい。
本発明の第13の態様によると、第11または12の態様の電子機器において、通信部は、撮像信号と、処理部に関する情報とを外部機器に送信することが好ましい。
図1は、本発明の第1の実施の形態に係る撮影システムの構成を示すブロック図である。撮影システム1は、カメラ10とサーバ100とを含む。カメラ10とサーバ100とは、例えばLANやWAN等のネットワーク80を介して接続され、双方向のデータ通信を行うことができる。
第2の実施の形態に係る撮影システムは、第1通信部19の近傍に不図示の温度センサを設けたことを除き、第1の実施の形態に係る撮影システムと同様の構成を有する。この不図示の温度センサは、第1通信部19の温度を検出する。第1通信部19は、第1ASIC14と同様に、通信量(授受するデータ量)が増大するほど発熱し、同一の筐体内に設けられている撮像素子12へ、通信量に応じた熱量を与える。
また、第1制御部21は、ステップS14,S15に代えて、第1通信部19の温度が規定値以上の場合は、第1通信部19によるデジタル画像画像のサーバ100への送信を中止して、第1ASIC14による画像処理を行うようにしてもよい。
第3の実施の形態に係る撮影システムは、第1の実施の形態に係る撮影システムから温度センサ20を除いた構成を有する。第1制御部21は、静止画撮影モードにおいて静止画像を撮影する際には第1ASIC14に画像処理を行わせ、動画撮影モードにおいて動画像を撮影する際にはサーバ100の第2ASIC102に画像処理を行わせる。第3の実施の形態において、第1制御部21は、このように撮影モードに応じて第1ASIC14に画像処理を行わせるか第2ASIC102に画像処理を行わせるかを決定しているので、撮影システムの構成・制御を簡略化することができる。
例えば第1の実施形態において、第1ASIC14により作成されるスルー画は、表示部15に略リアルタイムで出力されるのに対し、第2ASIC102により作成されるスルー画は、第1通信部19と第2通信部101とによる無線通信を介する必要があり、遅延が生じうる。この遅延を抑制するために、第1制御部21が、第1ASIC14が出力したスルー画および第1通信部19が受信したスルー画を、不図示のメモリにバッファリングし、スルー画の表示を常に一定時間(例えば0.5秒)だけ遅延させるようにしてもよい。これにより、サーバ100から送信されるスルー画に遅延が生じた場合であっても、表示部15に表示されるスルー画は滑らかに連続したものとなる。
図1では、1つのカメラ10と1つのサーバ100とがネットワーク80により接続された撮影システムを図示したが、1つのサーバに複数のカメラが接続されていてもよいし、複数のサーバと複数のカメラとが互いに接続されていてもよい。図5に、1つのサーバ100に対し、複数のカメラ(カメラ10、カメラ30、カメラ50)を接続する一例を示す。
上述した第1の実施の形態では、温度センサ20を撮像素子12の近傍に設け、第1制御部21は温度センサ20により検出した撮像素子12の温度に基づいてデジタル画像信号の送信可否を決定していたが、温度センサ20を第1ASIC14の近傍に設け、撮像素子12ではなく第1ASIC14の温度に基づいてデジタル画像信号の送信可否を決定してもよい。第2の実施の形態についても同様である。また、温度センサ20により検出した温度に基づいてデジタル画像信号の送信可否を決定するのではなく、温度センサ20により検出した温度の時系列的な変化(温度勾配)に基づいてデジタル画像信号の送信可否を決定してもよい。また、温度センサ20を撮像素子12と、第1ASIC14とのぞれぞれの近傍に設けてもよい。
カメラ10の外部に設けられ、カメラ10からデジタル画像信号を受信して画像処理を施すのは、サーバ100以外の外部機器であってもよく、例えばパーソナルコンピュータやいわゆるスマートフォン、タブレット型(スレート型)のコンピュータ等の携帯型電子機器などであってもよい。
上述した実施形態では、レンズ一体型のデジタルカメラを例に説明した。本発明はこのような実施の形態に限定されない。例えば、レンズ交換可能ないわゆる一眼レフレックス方式のデジタルカメラや、クイックリターンミラーを持たないレンズ交換式のデジタルカメラ(ミラーレスカメラ)、タブレット型のコンピュータ等の携帯型電子機器に適用することが可能である。なお、一眼レフレックス方式のデジタルカメラにおいては、ライブビュー表示を行うライブビューボタンやスイッチが設けられており、この場合に動画用ライブビューと静止画用ライブビューとの設定が可能でもある。このような場合も第1の実施形態を適用することができる。
日本国特許出願2013年第39128号(2013年2月28日出願)
Claims (13)
- 撮像部が撮像した撮像信号を処理する処理部と、
前記撮像部が撮像した撮像信号を外部機器に送信可能な通信部と、
前記撮像部の撮像の設定に応じて、前記撮像信号を前記外部機器に送信するかどうかを決定する決定部と、を備えた電子機器。 - 請求項1に記載の電子機器において、
前記通信部は、前記処理部の前記処理の内容に関する情報を前記外部機器に送信する電子機器。 - 請求項2に記載の電子機器において、
前記通信部は、前記処理部の仕様とパラメータとの少なくとも一方の情報を前記外部機器に送信する電子機器。 - 請求項1~3のいずれか一項に記載の電子機器において、
動画と静止画とを記録媒体に記録させる記録部を備え、
前記決定部は、前記記録部が前記動画を記録媒体に記録させる際に、前記撮像信号を前記外部機器に送信する電子機器。 - 請求項1~4のいずれか一項に記載の電子機器において、
前記撮像部を動画モードと静止画モードとに設定可能な設定部と、
前記決定部は、前記設定部により前記動画モードが設定された場合に、前記撮像信号を前記外部機器に送信する電子機器。 - 請求項5記載の電子機器において、
前記外部機器で処理された画像をライブビュー表示する表示部を備える電子機器。 - 撮像部が撮像した撮像信号を処理する処理部と、
前記撮像部が撮像した撮像信号を外部機器に送信可能な通信部と、
前記撮像部と、前記処理部との少なくとも一方の発熱状態に応じて、前記撮像信号を外部機器に送信するかどうかを決定する決定部と、を備えた電子機器。 - 請求項7に記載の電子機器において、
前記決定部は、前記通信部の発熱状態に応じて、前記撮像信号を前記外部機器に送信するかどうかを決定する電子機器。 - 請求項7または8に記載の電子機器において、
前記撮像部と、前記処理部と、前記通信部との少なくとも1つの温度を検出する温度検出部を備える電子機器。 - 請求項7~9のいずれか一項に記載の電子機器において、
動画と静止画とを記録媒体に記録させる記録部を備え、
前記決定部は、前記記録部が前記動画を記録媒体に記録させる際に、前記撮像信号を前記外部機器に送信する電子機器。 - 撮像部が撮像した撮像信号を処理する処理部と、
前記撮像部が撮像した撮像信号を外部機器に送信可能な通信部と、
前記通信部の発熱状態に応じて、前記撮像信号を外部機器に送信するかどうかを決定する決定部と、
を備える電子機器。 - 請求項11に記載の電子機器において、
前記通信部の温度を検出する温度検出部を備える電子機器。 - 請求項11または12に記載の電子機器において、
前記通信部は、前記撮像信号と、前記処理部に関する情報とを前記外部機器に送信する電子機器。
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EP2963909A4 (en) | 2016-10-19 |
JP2019054536A (ja) | 2019-04-04 |
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