JP5697718B2 - Electronics - Google Patents

Description

The present invention relates to electronic devices capable of receiving the power supplied from the power supply apparatus for performing non-contact power supply.

  Conventionally, when charging a secondary battery of an electronic device such as a digital camera or a mobile phone, the charging terminal provided on both the electronic device and the charging device is applied by placing the electronic device at a predetermined position of the charging device. The contact charging method in which the secondary battery is charged by being contacted and in contact is the mainstream.

  However, the contact charging method has a structure in which the charging terminal is exposed to the outside of the main body of the electronic device, so that contact with the connection terminal of the charging device is likely to occur due to adhesion of dust and water droplets, etc. There was a drawback that electrostatic breakdown was easily caused via the terminal.

  In contrast, in recent years, a non-contact charging method has been proposed. As a charging system using this non-contact charging method, a system using electromagnetic induction disclosed in Patent Document 1 is known. Hereinafter, the conventional charging system disclosed in Patent Document 1 will be described.

  In a charging system using electromagnetic induction, a primary coil for electromagnetic induction is provided in the charging device, a secondary coil for electromagnetic induction is provided in the electronic device body, and the primary coil provided in the charging device is excited. The battery is charged by supplying power to the secondary coil of the electronic device main body by electromagnetic induction.

  In the above charging system, when the electronic device main body is placed on the charging device, if the power switch of the charging device is turned on, the protrusion that is arranged on the upper surface of the charging device and protrudes upward by the elasticity of the spring is provided. Detects the installation of the electronic device body and starts charging. And as long as the installation of the electronic device main body is continued, it continues to be charged.

  In addition, the charging device is provided with a guide for holding the outer periphery of the electronic device body, and when the electronic device body is placed on the charging device, the temporary coil of the charging device and the secondary coil of the electronic device body are aligned. It is configured as follows.

  Compared to the contact charging method that requires a connector connection operation, the charging system of the non-contact charging method that uses electromagnetic induction action is very easy because charging starts just by placing the electronic device on the charging device. Convenience is good.

JP-A-1-298482

  However, when driving an electronic device during charging, the non-contact charging method has a problem that a strong magnetic field generated by electromagnetic induction affects the signal inside the electronic device and hinders driving of the electronic device. It was.

  For example, in an electronic camera, light from a subject is received and accumulated by each sensor using a focus adjusting unit, a photometric unit, or the like, and then an analog signal output is read from the sensor. At that time, since the magnetic field generated by electromagnetic induction affects the analog signal output as noise, accurate AF (autofocus) processing and AE (automatic exposure) processing cannot be performed.

  Further, when the analog signal output is read from the image sensor after the light from the subject is received and accumulated by the image sensor, the magnetic field generated by electromagnetic induction has an adverse effect, and good image data cannot be obtained.

An object of the present invention is to enable notification that a magnetic field generated by contactless power feeding may affect the operation of an electronic device .

One of the electronic devices according to the present invention includes a sensor used for focus adjustment processing, a power receiving unit that receives power supplied from a power feeding device that performs non-contact power feeding, and generation of an analog signal by the sensor from the power feeding device. When the received power is used, information for notifying that the output of the sensor is affected by the magnetic field generated when power is supplied from the power supply device is displayed on the display means. Control means for performing control .
One of the electronic devices according to the present invention includes a sensor used for exposure control processing, power receiving means for receiving power supplied from a power supply device that performs non-contact power supply, and generation of an analog signal by the sensor from the power supply device. When the received power is used, information for notifying that the output of the sensor is affected by the magnetic field generated when power is supplied from the power supply device is displayed on the display means. Control means for performing control.

One of the electronic devices according to the present invention includes an imaging device, power receiving means for receiving power supplied from a power feeding device that performs non-contact power feeding, and generation of an analog signal by the imaging device receives power received from the power feeding device. If used, control is performed to display on the display means information for notifying that the output of the image sensor is affected by the magnetic field generated when power is supplied from the power supply apparatus. And a control means .
One of the electronic devices according to the present invention includes: sensor means for generating an analog signal; power receiving means for receiving power supplied from a power supply device that performs contactless power supply; and generation of an analog signal by the sensor means is the power supply. When the power received from the apparatus is used, the display means displays information for notifying that the output of the sensor means is affected by the magnetic field generated when the power is supplied from the power supply apparatus. And a control means for performing control for the purpose.

According to the onset bright, it is possible magnetic field generated by the non-contact power supply is performed to notify that may occur when affects the operation of the electronic device.

It is a block diagram which shows the internal structure of the digital single-lens reflex camera which concerns on embodiment of invention. It is a block diagram which shows the internal structure of the charging device with which the digital single-lens reflex camera of FIG. 1 is mounted. It is a flowchart which shows the procedure of 1st Embodiment of the charging process performed by the charging system which consists of the electronic camera main body in FIG. 1 and the charging device of FIG. It is a figure which shows the operation | movement sequence in the flowchart of FIG. FIG. 4 is a flowchart illustrating a processing procedure when it is determined in step S105 in FIG. 3 that the rechargeable battery does not have a sufficient remaining battery charge for one image capturing. It is a flowchart which shows the procedure of the electric power supply process performed by the charging system which consists of the electronic camera main body in FIG. 1, and the charging device of FIG. It is a flowchart which shows the procedure of the electric power supply stop process performed by the charging system which consists of the electronic camera main body in FIG. 1, and the charging device of FIG. It is a flowchart which shows the procedure of 2nd Embodiment of the charging process performed by the charging system which consists of the electronic camera main body in FIG. 1, and the charging device of FIG. It is a figure which shows the operation | movement sequence in the flowchart of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing an internal configuration of a digital single-lens reflex camera according to an embodiment of the present invention.

  The digital single-lens reflex camera of this embodiment is equipped with a secondary coil and supplies power by electromagnetic induction with the primary coil mounted on the charging device.

  As shown in FIG. 1, a digital single-lens reflex camera according to the present embodiment includes a photographing lens unit 300 including a photographing optical system composed of an electronic camera body 100 constituting a digital single-lens reflex camera body, a plurality of photographing lenses 310, and the like. , Recording media 200 and 210 are provided. The recording media 200 and 210 are attached to the electronic camera body 100 in a detachable configuration.

  The photographic lens unit 300 includes a drive unit that drives the photographic lens 310, a light amount limiting unit that adjusts an incident light amount of a light beam that passes through the photographic lens 310, and the like. The taking lens unit 300 is detachably disposed with respect to the electronic camera body 100.

  Hereinafter, the configuration of the digital single-lens reflex camera will be described together with the operation.

  The shutter 12 controls the exposure amount to the image sensor (photoelectric conversion element) 14. The image sensor 14 that converts an optical image into an electrical signal is, for example, a CCD sensor or a CMOS sensor. The light beam incident on the photographic lens 310 is guided through the diaphragm 312, which is a light amount limiting unit, the lens mounts 306 and 106, the mirror 112, and the shutter 12, and forms an optical image on the imaging surface of the image sensor 14.

  Further, the mirrors 112 and 114 guide the light beam incident on the photographing lens 310 to the optical viewfinder 110. The mirror 112 may be either a quick return mirror or a half mirror.

  The A / D converter 16 converts an analog signal output from the image sensor 14 into a digital signal (hereinafter referred to as image data).

  A timing generation unit (circuit, hereinafter the same) 18 supplies a clock signal and a control signal to the image sensor 14, the A / D converter 16, and the D / A converter 26, and a memory control unit 22 and a system control unit 50 ( It is controlled by the electronic device side control means).

  The image processing unit 20 performs predetermined pixel interpolation processing and color conversion processing on the image data from the A / D converter 16 or the image data from the memory control unit 22. Further, the image processing unit 20 performs predetermined calculation processing using image data as necessary.

  Then, based on the obtained calculation result, the system control unit 50 performs TTL (through-the-lens) AF processing, AE processing, EF (control of the focus adjustment unit 42 and the exposure control unit 44. (Flash light control). Further, the image processing unit 20 performs WB (white balance) processing based on the calculation result obtained by the white balance control unit 36.

  The memory control unit 22 controls the A / D converter 16, the timing generation unit 18, the image processing unit 20, the image display memory 24, the D / A converter 26, the memory 30, and the compression / decompression unit 32. The image data output from the A / D converter 16 is written into the image display memory 24 or the memory 30 via the image processing unit 20 and the memory control unit 22 or only through the memory control unit 22.

  The image display memory 24 and the D / A converter 26, for example, the image display unit 28 such as a TFT / LCD, perform processing for image display. Specifically, the display image data written in the image display memory 24 is output to the image display unit 28 via the D / A converter 26 and displayed.

  An electronic viewfinder function can be realized by sequentially displaying image data picked up by the image sensor 14 using the image display unit 28.

  The image data recorded in the recording area 202 or 212 of the recording medium 200 or the recording medium 210 is read out, subjected to predetermined processing by the compression / decompression unit 32, and then passed through the image display memory 24 and the D / A converter 26. It can also be displayed on the image display unit 28.

  Imaging information data recorded in association with an image can also be displayed on the image display unit 28. Further, the image display unit 28 can arbitrarily turn on / off the display according to an instruction from the system control unit 50. When the display is turned off, the power consumption of the electronic camera body 100 can be greatly reduced. It is.

  The memory 30 is a storage medium for storing captured still images and moving images, and has a storage capacity sufficient to store a predetermined number of still images and moving images for a predetermined time. This makes it possible to perform high-speed and large-capacity image writing to the memory 30 even in continuous shooting where a plurality of still images are continuously captured. The memory 30 can also be used as a work area for the system control unit 50.

  The compression / decompression unit 32 compresses and decompresses image data by adaptive discrete cosine transform (ADCT) or the like. The compression / decompression unit 32 reads image data stored in the memory 30, performs compression processing or decompression processing, and writes the processed image data to the memory 30.

  The white balance calculation unit 34 calculates the color temperature using image data captured by the TTL method. The white balance control unit 36 obtains white balance correction data necessary for the image processing unit 20 to perform white balance processing according to a white balance adjustment gain set in advance according to the light source selection of the photographer and the color temperature input. calculate.

  The shutter control unit 40 controls the shutter 12 in cooperation with the aperture control unit 330 that controls the aperture 312 based on the photometric information from the exposure control unit 44. The focus adjustment unit 42 performs AF processing.

  When performing the AF processing by the phase difference detection method, first, the subject light incident on the photographing lens 310 passes through the aperture 312, the lens mounts 306 and 106, the mirror 112, and the distance measuring sub mirror (not shown), and the focus adjustment unit. The light is incident and exposed to a distance measuring sensor 43 in 42.

  Here, the distance measuring sensor 43 functions as a focus adjustment element for observing the focus state of the subject when performing focus adjustment by the focus adjustment unit 42.

  Then, the focus adjustment unit 42 reads the analog signal output from the distance measuring sensor 43 after a predetermined accumulation time of the signal charge of the subject light, obtains the defocus amount, and the system control unit 50 determines the image formed as an optical image. Determine the in-focus state.

  When it is determined that the in-focus state is not achieved, the system control unit 50 obtains the driving amount of the focusing lens based on the defocus amount obtained from the focus adjustment unit 42. The system control unit 50 controls the distance measurement control unit 332 via the interfaces (I / F) 120 and 320 and the connectors 122 and 322 based on the driving amount, and drives the focusing lens to perform the AF process. Do.

  The exposure control unit 44 is a photometric device for performing AE processing. The light beam incident on the photographing lens 310 is incident and exposed to the photometric sensor (exposure control element) 45 via the aperture 312, the lens mounts 306 and 106, the mirror 112, and the photometric lens in the exposure control unit 44.

  The exposure control unit 44 reads the analog signal output from the photometric sensor 45 after a predetermined accumulation time for the signal charge of the subject light, converts it to a digital signal, and the exposure state of the image formed as an optical image by the system control unit 50 And the optimum shutter control value and aperture control value are calculated.

  The strobe 46 also has an AF auxiliary light projecting function and a strobe light control function. Based on the calculation result obtained by calculating the image data captured by the image sensor 14 by the image processing unit 20, the system control unit 50 applies the video TTL method to the shutter control unit 40, the aperture control unit 330, and the distance measurement control unit 332. Exposure control and AF control can also be performed.

  Furthermore, AF control may be performed using both the adjustment result by the focus adjustment unit 42 and the calculation result obtained by calculating the image data captured (captured) by the image sensor 14 by the image control unit 20.

  The exposure control may be performed using both the measurement result by the exposure control unit 44 and the calculation result obtained by calculating the image data captured by the image sensor 14 by the image processing unit 20.

  The analog processing detection unit 48 detects the operation timing of analog signal processing performed in the electronic camera body 100.

  Here, the analog signal processing is signal accumulation processing of the photoelectric conversion element. The analog signal processing is analog signal reading processing from the photoelectric conversion element.

  The system control unit 50 controls the entire electronic camera body 100. The memory 52 stores constants, variables, programs, etc. for operation of the system control unit 50.

  The display unit 54 displays an operation state and a message using characters, images, sounds, and the like in accordance with the execution of the program in the system control unit 50, for example, a display function such as a liquid crystal display, and operation and warning sounds. For example, a sound generation function such as a speaker is provided.

  One or a plurality of display units 54 are installed at positions in the vicinity of the operation unit of the electronic camera body 100 that are easily visible, and are configured by a combination of, for example, an LCD, an LED, and a sounding element.

  Here, the operation means of the digital single-lens reflex camera will be specifically described.

  Among the display contents of the display unit 54, what is displayed on the LCD or the like includes single shot / continuous shooting display, self-timer display, compression rate display, number of recorded pixels, number of recorded pixels, number of remaining images that can be captured, shutter There are speed display, aperture value display, and exposure compensation display.

  In addition, the display on the LCD, etc. includes flash display, red-eye reduction display, macro shooting display, buzzer setting display, clock battery level display, battery level display, error display, multi-digit number information display, recording There is an attachment / detachment state display of the media 200 and 210.

  Also, what is displayed on the LCD or the like includes an attaching / detaching state display of the photographing lens unit 300, a communication I / F operation display, a date / time display, and a display showing a connection state with an external computer.

  Among the display contents of the display unit 54, what is displayed in the optical viewfinder 110 includes an in-focus display, a shooting preparation completion display, a camera shake warning display, a flash charge display, and a flash charge completion display.

  The display in the optical viewfinder 110 includes shutter speed display, aperture value display, exposure correction display, and recording medium writing operation display.

  Further, among the display contents of the display unit 54, what is displayed on the LED or the like includes in-focus display, shooting preparation completion display, camera shake warning display, flash charge display, flash charge completion display, recording medium writing operation display, macro There are a shooting setting notification display, a secondary battery charge state display, and the like.

  Among the display contents of the display unit 54, what is displayed on a lamp or the like includes a self-timer notification lamp display. This self-timer notification lamp may be used in common with the AF auxiliary light.

  The electrically erasable / recordable non-volatile memory 56 records the contents of the memory 52 as required, and for example, an EEPROM or the like is used. The timer 58 measures the elapsed time.

  The mode dial 60, the release switch SW1 (62), and the release switch SW2 (64) are operation means for inputting various operation instructions of the system control unit 50. The form includes a single or a plurality of combinations such as a switch, a dial, a touch panel, pointing by line-of-sight detection, and a voice recognition device.

  Here, a specific description of these operating means will be given.

  The mode dial 60 is a rotary switch capable of switching and setting an automatic shooting mode, a program shooting mode, a shutter speed priority shooting mode, an aperture priority shooting mode, a manual shooting mode, and a depth of focus priority (depth) shooting mode.

  The mode dial 60 is a rotary switch that can switch and set various function shooting modes such as a portrait shooting mode, a landscape shooting mode, a close-up shooting mode, a sports shooting mode, a night view shooting mode, and a panoramic shooting mode.

  The release switch SW1 (62) is turned on during operation of a release button (not shown), and instructs to start operations such as AF processing, AE processing, WB processing, and EF processing.

  The release switch SW2 (64) is turned on when a release button (not shown) is operated, and the signal read from the image sensor 14 is transferred to the memory 30 via the A / D converter 16 and the memory control unit 22. An instruction to start an operation of a series of processing called exposure processing to be written is given.

  The release switch SW2 (64) instructs operation start of the following series of processes following the series of processes described above. That is, a development process using computations in the image processing unit 20 and the memory control unit 22, a recording process in which image data is read from the memory 30, compressed by the compression / decompression unit 32, and written to the recording medium 200 or 210. It is.

  The operation unit 70 includes various buttons and a touch panel. The operation unit 70 includes, for example, a menu button, a set button, a macro button, a multi-screen playback page break button, a flash setting button, a single shooting / continuous shooting / self-timer switching button, and the like.

  The operation unit 70 includes a menu move + (plus) button, a menu move− (minus) button, a shooting image quality selection button, an exposure correction button, a date / time setting button, a selection / switch button, and the like.

  The operation unit 70 includes a determination / execution button, an image display on / off switch, a quick review on / off switch, a compression mode switch, an AF mode setting switch, and the like.

  The selection / switch button is a button for selecting and switching various functions when performing shooting and playback in a panorama mode or the like. The determination / execution button is a button for setting determination and execution of various functions when performing shooting and reproduction in a panorama mode or the like.

  The image display on / off switch is a switch for setting on / off of the image display unit 28. When the image display on / off switch is on, a captured image can be reproduced.

  The quick review on / off switch is a switch for setting a quick review function for automatically reproducing image data taken immediately after photographing. The compression mode switch is a switch for selecting a compression rate of JPEG compression, or for selecting a CCD / RAW mode in which an image pickup signal output from an image pickup device is directly digitized and recorded on a recording medium.

  The AF mode setting switch is a switch that can set the one-shot AF mode that starts the autofocus operation when the release switch SW1 (62) is pressed and keeps the focused state once the focus is achieved. . The AF mode setting switch is a switch that can set a servo AF mode that continues the autofocus operation while the release switch SW1 (62) is being pressed.

  Further, the plus button and the minus button are provided with a rotary dial switch, so that it is possible to select a numerical value and a function more easily.

  The power switch 72 can switch and set the power-on and power-off modes of the electronic camera body 100. In addition, the power-on and power-off settings of various accessory devices such as the photographing lens unit 300 connected to the electronic camera body 100, an external strobe (not shown), and the recording media 200 and 210 can be switched. .

  The power supply control unit 80 includes a battery detection unit, a DC / DC converter, a switch unit that switches a block to be energized, and the like. The power supply control unit 80 detects the remaining battery level of the rechargeable battery 82, controls the DC / DC converter based on the remaining battery level detection result and the instruction from the system control unit 50, and records the necessary voltage for the necessary period. Supply to each part including the medium.

  The rechargeable battery 82 is a secondary battery such as a NiCd battery, NiMH battery, or Li battery, and serves as a power source for the electronic camera body 100.

  The charging control unit 84 charges the rechargeable battery 82 when an electromotive force of a predetermined voltage value or higher is excited in the secondary coil 86. In addition, the electromotive force generated in the secondary coil 86 is also guided from the charge control unit 84 to the power supply control unit 80.

  When the electronic camera body 100 is placed on the charging device 400 (FIG. 2) and the power switch 72 of the electronic camera body 100 is turned on, the charging device (FIG. 2, 400) is used as a power source to replace the rechargeable battery 82. The camera body 100 can be operated.

  The secondary coil 86 is a coil in which an electromotive force is generated by a magnetic field generated by the primary coil 416 (FIG. 2) mounted on the charging device 400 when the electronic camera body 100 is mounted on the charging device 400. is there. The secondary coil 86 functions as a power receiving means (power receiving coil) in a non-contact charging method using electromagnetic induction.

  The system control unit 50 transmits a power supply start signal or a power supply stop signal to the electronic camera body 100 from the transmission unit 88 to the reception unit 418 (FIG. 2) of the charging device 400 on which the electronic camera body 100 is placed.

  The charging device detection unit 89 detects whether or not the electronic camera body 100 is mounted on the charging device 400.

  There are interfaces (I / F) 90 and 94 with recording media 200 and 210 such as a memory card and a hard disk, and connectors 92 and 96 for connecting with the recording media 200 and 210.

  The recording medium attachment / detachment detection unit 98 detects whether or not the recording medium 200 or 210 is attached to the connectors 92 and 96. In the present embodiment, the description is given assuming that there are two systems of interfaces and connectors to which the recording media 200 and 210 are attached.

  Of course, the interface and the connector for attaching the recording media 200 and 210 may be configured to include one or three or more. Moreover, it is good also as a structure provided with combining the interface and connector of a different standard.

  The communication unit 116 has various communication functions such as RS232C, USB, IEEE1394, P1284, SCSI, modem, LAN, and wireless communication. A connector (antenna in the case of wireless communication) 118 connects the electronic camera body 100 to another device through the communication unit 116.

  The interface 120 is for connecting the electronic camera body 100 to the photographing lens unit 300 in the lens mount 106. The connector 122 electrically connects the electronic camera body 100 to the photographing lens unit 300.

  The lens attachment / detachment detection unit 124 detects whether or not the photographing lens unit 300 is attached to the lens mount 106 and / or the connector 122.

  The connector 122 transmits a control signal, a status signal, a data signal, and the like between the electronic camera body 100 and the photographing lens unit 300 and also has a function of supplying currents of various voltages. Further, the connector 122 may be configured to transmit not only electrical communication but also optical communication, voice communication, and the like.

  The recording medium 200 includes a recording area 202 composed of a semiconductor memory, a magnetic disk, or the like, an interface (I / F) 204 with the electronic camera body 100, and a connector 206 for connecting with the electronic camera body 100. Image data is recorded in the recording area 202, and imaging information is recorded in association with the image data as imaging information data.

  The recording medium 210 includes a recording area 212 composed of a semiconductor memory, a magnetic disk, and the like, an interface (I / F) 214 with the electronic camera body 100, and a connector 216 for connecting with the electronic camera body 100. In the recording area 212, image data is recorded, and imaging information is recorded in association with the image data as imaging information data.

  Here, the photographing lens unit 300 described above will be described in more detail.

  The photographing lens unit 300 is an interchangeable lens type photographing lens unit as described above.

  The lens mount 306 mechanically couples the photographing lens unit 300 with the electronic camera body 100. The lens mount 306 includes various functions for electrically connecting the photographing lens unit 300 to the electronic camera body 100.

  The interface 320 is for connecting the photographing lens unit 300 to the electronic camera body 100 in the lens mount 306. The connector 322 electrically connects the photographic lens unit 300 to the electronic camera body 100.

  The connector 322 transmits a control signal, a status signal, a data signal, and the like between the electronic camera body 100 and the lens unit 300, and also has a function of supplying or supplying a current of various voltages. Further, the connector 322 may be configured to transmit not only electrical communication but also optical communication, voice communication, and the like.

  The aperture control unit 330 controls the aperture 312 based on the photometric information from the exposure control unit 44 in cooperation with the shutter control unit 40 that controls the shutter 12. The distance measurement control unit 332 controls focusing of the photographing lens 310.

  The zoom control unit 334 controls zooming of the photographing lens 310. The lens control unit 336 controls the entire taking lens unit 300. The lens control unit 336 has a memory function for storing operation constants, variables, programs, and the like. In addition, the lens control unit 336 stores non-volatile information that stores identification information such as a unique number of the photographing lens unit 300, management information, function information such as an open aperture value, minimum aperture value, and focal length, and current and past setting values. It also has a memory function.

  Then, the structure of the charging device 400 is demonstrated using FIG.

  FIG. 2 is a block diagram showing an internal configuration of the charging device on which the digital single-lens reflex camera of FIG. 1 is placed.

  In FIG. 2, a system control unit 410 (charging device side control means) controls the entire charging device 400. The system control unit 410 acquires a signal transmitted from the reception unit 418, determines start / stop of power supply by electromagnetic induction, and controls the AC / DC conversion unit 412.

  The AC / DC conversion unit 412 steps down the AC voltage supplied from the commercial power supply via the AC cord 413 to a predetermined voltage and rectifies the voltage to a DC voltage, stabilizes the voltage to a predetermined voltage, and supplies the AC voltage to each unit of the charging device 400. Supply power.

  The oscillation unit 414 generates a high frequency having a predetermined frequency. The primary coil 416 is a coil that generates a magnetic field in which the number of magnetic fluxes changes with time when a high frequency generated by the oscillation unit 414 is input, and is a non-contact charging method that uses electromagnetic induction. Functions as a power transmission means (power transmission coil).

  An electromotive force is generated when the secondary coil 86 mounted on the electronic camera body 100 is placed in a magnetic field generated by the primary coil 416.

  The receiving unit 418 receives a power supply start / stop signal by electromagnetic induction transmitted from the transmission unit 88 mounted on the electronic camera body 100. As a communication method between the transmission unit 88 and the reception unit 418, infrared communication, communication via various connectors, and the like can be considered.

(First embodiment)
An operation when the power supply from the charging device 400 is stopped at the time of accumulating signal charges affected by magnetic field noise and at the time of reading analog signal output will be described.

  FIG. 3 is a flowchart showing a procedure of a first embodiment of a charging process executed by a charging system including the electronic camera body in FIG. 1 and the charging device in FIG.

  FIG. 4 is a diagram showing an operation sequence in the flowchart of FIG.

  In FIG. 3, the system control unit 50 first determines whether or not the electronic camera body 100 is placed on the charging device 400 by the charging device detection unit 89 (step S <b> 101).

  When the electronic camera main body 100 is not placed on the charging device 400 (NO side of step S101), the charging device detection unit 89 until it is detected that the electronic camera main body 100 is placed on the charging device 400. Repeat the detection.

  When the electronic camera body 100 is placed on the charging device 400 (YES side of step S101), power supply by electromagnetic induction from the charging device 400 is started (step S102). Subsequently, the system control unit 50 determines whether or not the release switch SW1 (62) is turned on (step S103).

  If the release switch SW1 (62) is not turned on (NO side in step S103), the system control unit 50 determines whether the electronic camera body 100 is placed on the charging device 400 by the charging device detection unit 89. Is determined (step S104).

  When the electronic camera body 100 is not placed on the charging device 400 (NO side of step S104), the process proceeds to step S117, and when the electronic camera body 100 is placed on the charging device 400 (step S104). (YES side), it returns to step S103.

  When the release switch SW1 (62) is turned on (YES side of step S103), the process proceeds to step S105.

  In step S105, the power control unit 80 detects the remaining battery level of the rechargeable battery 82, and the system control unit 50 determines that the rechargeable battery 82 has a sufficient battery level for one shooting based on the remaining battery level detection result. It is determined whether or not.

  If it is determined that the rechargeable battery 82 does not have a sufficient battery level for one shooting (NO side of step S105), the process proceeds to step S200 of FIG.

  If it is determined that the rechargeable battery 82 has a sufficient battery level for one shooting (YES side of step S105), the process proceeds to step S106.

  In step S <b> 106, when the analog processing detection unit 48 detects the signal charge accumulation operation of the distance measurement sensor 43 and the photometry sensor 45, the system control unit 50 controls to transmit a power supply stop signal from the transmission unit 88. . When the reception unit 418 receives the power supply stop signal, the system control unit 410 controls the operation of the oscillation unit 414 to stop. Thereby, the power supply from the charging device 400 is stopped.

  Next, subject light is incident and exposed to the distance measuring sensor 43 in the focus adjusting unit 42 and the photometric sensor 45 in the exposure control unit 44, and signal charges are accumulated for a predetermined time. After the accumulation is completed, the system control unit 50 controls the focus adjustment unit 42 and the exposure control unit 44 to read out the analog signal output of the signal charges accumulated from the distance measuring sensor 43 and the photometric sensor 45, and performs AF processing and AE processing. Is performed (step S107).

  In step S107, when the AF process and the AE process are completed, the analog process detection unit 48 detects the completion of the analog signal output reading operation of the distance measuring sensor 43 and the photometric sensor 45. Thereby, the system control unit 50 performs control so as to transmit the power supply start signal from the transmission unit 88. When the reception unit 418 receives the power supply start signal, the system control unit 410 controls the operation of the oscillation unit 414 to start. Thereby, power supply from the charging device 400 is started (step S108).

  Then, the system control unit 50 determines whether or not the release switch SW1 (62) is still on (step S109).

  If the release switch SW1 (62) is not turned on (NO side of step S109), the process returns to step S103.

  When the release switch SW1 (62) is turned on (YES side of step S109), the system control unit 50 determines whether or not the release switch SW2 (64) is turned on (step S110).

  If the release switch SW2 (64) is not turned on (NO side of step S110), the process returns to step S109.

  When the release switch SW2 (64) is turned on (YES side of step S110), when the signal charge accumulation operation of the image sensor 14 is detected by the analog processing detector 48, the system controller 50 starts from the transmitter 88. Control to transmit a power supply stop signal. When the reception unit 418 receives the power supply stop signal, the system control unit 410 controls the operation of the oscillation unit 414 to stop. Thereby, the power supply from the charging device 400 is stopped (step S111).

  Then, based on the exposure time determined by the system controller 50 in the exposure calculation from the photometric result of the exposure controller 44, the shutter controller 40 controls and drives the shutter 12, and the imaging element 14 is attached to the photographic lens unit mounted. The light beam transmitted through 310 is received and signal charges are accumulated. Then, the system control unit 50 controls the timing generation unit 18 to read out the analog signal output of the signal charge accumulated from the image sensor 14 (step S112).

  When the accumulation in the image sensor 14 and the reading of the analog signal output from the image sensor 14 are completed, the analog processing detection unit 48 detects the end of the analog signal output read operation from the image sensor 14. The system control unit 50 performs control so as to transmit a power supply start signal from the transmission unit 88. When the reception unit 418 receives the power supply start signal, the system control unit 410 controls the operation of the oscillation unit 414 to start. Thereby, the power supply from the charging device 400 is started (step S113).

  The analog signal output read from the image sensor 14 becomes image data converted into a digital signal by the A / D converter 16. The image data that has become a digital signal is subjected to image processing such as predetermined pixel interpolation processing and color conversion processing by the image processing section 20 (step S114).

  Further, the image data subjected to the image processing in step S114 is sent to the image memory 24 or the memory 30 via the memory control unit 22 or the image data of the A / D converter 16 directly via the memory control unit 22. Written. The image data written in the image memory 24 or the memory 30 is displayed on the image display unit 28 and recorded in the recording area 202 of the recording medium 200 and / or the recording medium 212 of the recording medium 210 (step S115). .

  The system control unit 50 determines whether or not the electronic camera body 100 is mounted on the charging device 400 by the charging device detection unit 89 (step S116).

  When the electronic camera body 100 is placed on the charging device 400 (YES side of step S116), the process returns to step S103.

  When the electronic camera body 100 is not placed on the charging device 400 (NO side of step S116), the power supply by electromagnetic induction from the charging device 400 is stopped (step S117), and the process is terminated.

  FIG. 5 is a flowchart showing a processing procedure when it is determined in step S105 of FIG. 3 that the rechargeable battery does not have a sufficient remaining battery charge for one shooting.

  If it is determined in step S104 in FIG. 3 that the rechargeable battery 82 does not have sufficient remaining battery charge for one shooting, the power supply from the charging device 400 may be stopped in order to perform shooting. Can not.

  However, in this case, the magnetic field generated by electromagnetic induction affects the analog signal output as noise. Therefore, the system control unit 50 controls the display unit 54 to display a warning indicating that the magnetic field generated by the electromagnetic induction affects various operations related to imaging (step S201).

  The system control unit 50 exposes and accumulates subject light in the photometric sensor 45, performs exposure calculation from the read analog signal output, and performs AE processing for determining the shutter speed and aperture value so that the subject luminance is at an appropriate level. Do. Further, the system control unit 50 exposes and accumulates subject light in the distance measuring sensor 43, and performs distance calculation from the read analog signal output. Then, the system control unit 50 drives the focusing lens by controlling the distance measurement control unit 332 via the interfaces 120 and 320 and the connectors 122 and 322 so as to be focused at the selected focus detection point. Thus, AF processing is performed (step S202).

  After the AF process and the AE process are completed, the system control unit 50 determines whether or not the release switch SW1 (62) is still on (step S203).

  If the release switch SW1 (62) is not turned on (NO side of step S203), the process returns to step S103 of FIG.

  When the release switch SW1 (62) is turned on (YES side of step S203), the system control unit 50 determines whether or not the release switch SW2 (64) is turned on (step S204).

  If release switch SW2 (64) is not turned on (NO side of step S204), the determination is repeated until release switch SW2 (64) is turned on.

  When the release switch SW2 (64) is turned on (YES side of step S204), the shutter control unit 40 is based on the exposure time determined by the system control unit 50 in the exposure calculation from the photometric result of the exposure control unit 44. The shutter 12 is controlled and driven. In addition, the image sensor 14 receives a light beam transmitted through the mounted photographing lens 310 and performs a series of operations related to photographing for accumulating signal charges (step S205).

  When the exposure operation is started, an analog signal output from the image sensor 14 is converted into a digital signal by the A / D converter 16, and predetermined image interpolation processing or color is performed by the image processing unit 20 on the image data converted into the digital signal. Image processing such as conversion processing is performed (step S206).

  The image data subjected to the image processing in step S206 is written into the image memory 24 or the memory 30 via the memory control unit 22 or the image data of the A / D converter 16 directly via the memory control unit 22. . The image data written in the image memory 24 or 30 is displayed on the image display unit 28 and recorded in the recording area 202 of the recording medium 200 and / or the recording medium 212 of the recording medium 210 (step S207). . Then, the process returns to step S116 in FIG.

  Next, power supply start operation by electromagnetic induction from the charging device 400 to the electronic camera body 100 will be described with reference to FIGS. 1, 2, and 6.

  6 is a flowchart illustrating a procedure of power supply processing executed by a charging system including the electronic camera body in FIG. 1 and the charging device in FIG.

  In FIG. 6, first, the system control unit 50 controls the transmission unit 88 to transmit a signal instructing to start power supply by electromagnetic induction to the reception unit 418 in the charging apparatus 400 (step S301).

  The signal instructing the start of power supply transmitted by the transmission unit 88 in step S301 is received by the reception unit 418 in the charging device 400 (step S302).

  Then, the system control unit 410 of the charging apparatus 400 controls the AC / DC conversion unit 412 to supply power from the commercial power source to the oscillation unit 414 via the AC cord 413. The oscillating unit 414 that receives the power supply generates a high frequency and inputs the high frequency to the primary coil 416 to generate a magnetic field in the primary coil 416. An electromotive force is generated in the secondary coil 86 in the electronic camera body 100 that has received the magnetic field from the primary coil 416. Thus, power supply by electromagnetic induction is started (step S303).

  The charge control unit 84 determines whether or not an electromotive force greater than a predetermined voltage value is generated in the secondary coil 86 (step S304).

  If an electromotive force of a predetermined voltage value or higher is not generated in the secondary coil 86 (NO side of step S304), the determination is repeated until an electromotive force of a predetermined voltage value or higher is generated.

  When an electromotive force greater than a predetermined voltage value is generated in the secondary coil 86 (YES side of step S304), the system control unit 50 determines whether or not the power switch 72 is turned on, and the electronic camera It is confirmed whether the main body 100 is operating (step S305).

  When the power switch 72 is turned on and the electronic camera body 100 is operating (YES side of step S305), the charging control unit 84 supplies the electromotive force generated by the secondary coil 86 to the power control unit 80. To do. The power supply control unit 80 controls the DC / DC converter based on an instruction from the system control unit 50, and supplies a necessary voltage to each unit including the recording media 200 and 210 for a necessary period (step S306).

  When the power switch 72 is off and the electronic camera body 100 is not in operation (NO side of step S305), the charging control unit 84 supplies the electromotive force generated by the secondary coil 86 to the rechargeable battery 82, The rechargeable battery 82 is charged (step S307). Then, the process ends.

  Next, a power supply stop operation by electromagnetic induction from the charging device 400 to the electronic camera body 100 will be described with reference to FIGS. 1, 2, and 7.

  FIG. 7 is a flowchart illustrating a procedure of power supply stop processing executed by a charging system including the electronic camera body in FIG. 1 and the charging device in FIG.

  In FIG. 7, first, the system control unit 50 determines whether or not the power switch 72 is turned on, and checks whether or not the electronic camera body 100 is operating (step S401).

When the power switch 72 is turned on and the electronic camera main body 100 is operating (YES in step S401), the system control unit 50 controls the power control unit 80 and the charge control unit 84 to control the electronic camera main body. The power source of 100 is switched from the charging device 400 to the rechargeable battery 82 (step S40 2 ). After switching the power source of the electronic camera main body 100, the process proceeds to step S40 3.

  If the power switch 72 is off and the electronic camera body 100 is not in operation (NO in step S401), the process proceeds to step S403.

  In step S <b> 403, the system control unit 50 controls the transmission unit 88 to transmit a signal instructing to stop power supply by electromagnetic induction to the reception unit 418 in the charging apparatus 400.

  The signal instructing to stop the power supply transmitted by the transmission unit 88 in step S403 is received by the reception unit 418 in the charging device 400 (step S404).

  Then, system control unit 410 of charging device 400 controls AC / DC conversion unit 412 to stop power supply to oscillation unit 414 via commercial power supply AC cord 413. When the supply of power to the oscillating unit 414 is stopped, the high frequency generation of the oscillating unit 414 is stopped, so that the magnetic field generation of the primary coil 416 is also stopped. Therefore, the generation of the electromotive force of the secondary coil 86 in the electronic camera body 100 that receives the magnetic field from the primary coil 416 is also stopped. Thus, the power supply by electromagnetic induction is stopped (step S405). Then, the process ends.

  As described above, in the electronic device, the charging device, and the charging system according to the present embodiment, the electronic device performs analog signal processing even when the non-contact power supply is received from the charging device while the electronic device is being driven. The power supply is stopped while it is on. Stopping and resuming the supply of power is as shown in steps S106 to S108 and steps S111 to S113.

  Therefore, it is possible to prevent magnetic field noise generated by electromagnetic induction from adversely affecting the driving of the electronic device.

(Second Embodiment)
An operation in the case where the power supply from the charging device 400 is stopped only when reading out an analog signal output that is strongly influenced by magnetic field noise will be described.

  FIG. 8 is a flowchart showing a procedure of a second embodiment of a charging process executed by a charging system including the electronic camera body in FIG. 1 and the charging device in FIG.

  FIG. 9 is a diagram showing an operation sequence in the flowchart of FIG.

  In FIG. 8, the system control unit 50 first determines whether or not the electronic camera body 100 is placed on the charging device 400 by using the charging device detection unit 89 (step S501).

  If the electronic camera main body 100 is not placed on the charging device 400 (NO side of step S501), the charging device detection unit 89 until it is detected that the electronic camera main body 100 is placed on the charging device 400. Repeat the detection.

When the electronic camera body 100 is placed on the charging device 400 (YES side of step S501), power supply by electromagnetic induction from the charging device 400 is started (step S502). For more information about the power supply start operation by electromagnetic induction, it is as described in FIG.

  Subsequently, the system control unit 50 determines whether or not the release switch SW1 (62) is turned on (step S503).

  When the release switch SW1 (62) is not turned on (NO side of step S503), the system control unit 50 determines whether or not the electronic camera body 100 is placed on the charging device 400 by the charging device detection unit 89. A determination is made (step S504).

  If the electronic camera body 100 is not placed on the charging device 400 (NO side of step S504), the process proceeds to step S524, and if the electronic camera body 100 is placed on the charging device 400 (step S504). (YES side), it returns to step S503.

  When release switch SW1 (62) is turned on (YES side in step S503), power supply control unit 80 detects the remaining battery level of rechargeable battery 82. The system control unit 50 determines whether or not the rechargeable battery 82 has a sufficient battery level for one shooting from the battery level detection result (step S505).

  If it is determined that the rechargeable battery 82 does not have a sufficient battery level for one shooting (NO side of step S505), the process proceeds to step S200 of FIG.

  When it is determined that the rechargeable battery 82 has a sufficient battery level for one shooting (YES in step S505), the system control unit 50 starts AF processing and AE processing (step S506). ).

  When the AF process and the AE process are started, subject light enters and is exposed to the distance measuring sensor 43 in the focus adjusting unit 42 and the photometric sensor 45 in the exposure control unit 44, and signal charges are accumulated for a predetermined time. The system control unit 50 controls the accumulation time of the distance measuring sensor 43 and the photometric sensor 45 by the timer 58.

  Next, the system control unit 50 determines whether or not the timer 58 has reached the accumulation end time (analog signal output readout start time of the distance measuring sensor 43 and the photometric sensor 45) (step S507).

  If the timer 58 has not reached the accumulation end time (NO in step S507), the determination is repeated until the timer 58 reaches the accumulation end time.

When the timer 58 reaches the accumulation end time (YES in step S507), the analog processing detection unit 48 detects the start of reading of the signal charges accumulated in the distance measuring sensor 43 and the photometric sensor 45. Then, the system control unit 50 performs control so that the power supply stop signal is transmitted from the transmission unit 88. When the reception unit 418 receives the power supply stop signal, the system control unit 410 controls the operation of the oscillation unit 414 to stop. Thereby, the power supply from the charging device 400 is stopped (step S508). For more information about the power supply stop with the electromagnetic induction, it is as described in FIG.

  After stopping the power supply from the charging device 400 in step S508, the system control unit 50 controls the focus adjustment unit 42 and the exposure control unit 44, and the signal charges accumulated from the distance measuring sensor 43 and the photometric sensor 45 are controlled. An analog signal output is read (step S509).

  Then, the system control unit 50 determines whether or not the reading of the analog signal output of the signal charges accumulated from the distance measuring sensor 43 and the photometric sensor 45 in step S508 is completed (step S510).

  If the reading of the analog signal output has not been completed (NO side in step S510), the determination is repeated until the reading of the analog signal output is completed.

  When the reading of the analog signal output accumulated from the distance measuring sensor 43 and the photometric sensor 45 is completed (YES side of step S510), the analog processing detection unit 48 reads the analog signal output from the distance measuring sensor 43 and the photometric sensor 45. The end of the operation is detected. The system control unit 50 performs control so as to transmit a power supply start signal from the transmission unit 88. When the reception unit 418 receives the power supply start signal, the system control unit 410 controls the operation of the oscillation unit 414 to start. Thereby, power supply from the charging device 400 is started (step S511).

  The system control unit 50 performs an exposure calculation from the analog signal output read from the photometric sensor 45, and performs an AE process for determining the shutter speed and the aperture value so that the subject luminance is at an appropriate level. Further, the system control unit 50 performs distance calculation from the analog signal output read from the distance sensor 43, and through the interfaces 120 and 320 and the connectors 122 and 322 so as to be focused at the selected focus detection point. The distance measurement control unit 332 is controlled. Then, AF processing is performed by driving the focusing lens (step S512).

  After the AF process and the AE process are completed, the system control unit 50 determines whether or not the release switch SW1 (62) is still on (step S513).

  If the release switch SW1 (62) is not turned on (NO side of step S513), the process returns to step S503.

  When the release switch SW1 (62) is turned on (YES side of step S513), the system control unit 50 determines whether or not the release switch SW2 (64) is turned on (step S514).

  If release switch SW2 (64) is not turned on (NO side of step S514), the process returns to step S513.

  When release switch SW2 (64) is turned on (YES in step S514), system control unit 50 controls driving of shutter 12 via shutter control unit 40 based on the exposure time determined by the calculation. In addition, the imaging device 14 receives the light beam that has passed through the attached photographing lens 310 and starts accumulation of signal charges (step S515).

  At that time, the system control unit 50 controls the signal charge accumulation time of the image sensor 14 by the timer 58 and the timing generation unit 18.

  Next, the system control unit 50 determines whether or not the timer 58 has reached the accumulation end time (analog signal output readout start time of the image sensor) (step S516).

  If the timer 58 has not reached the accumulation end time (NO side of step S516), the determination is repeated until the timer 58 reaches the accumulation end time.

  When the timer 58 reaches the accumulation end time (YES in step S516), when the analog process detection unit 48 detects the start of reading of the signal charges accumulated in the image sensor 14, the system control unit 50 transmits Control is performed to transmit a power supply stop signal from the unit 88. When the reception unit 418 receives the power supply stop signal, the system control unit 410 controls the operation of the oscillation unit 414 to stop. Thereby, the power supply from the charging device 400 is stopped (step S517).

  After stopping the power supply from the charging device 400 in step S517, the system control unit 50 controls the timing generation unit 18 to read out the analog signal output of the signal charge accumulated from the image sensor 14 (step S518).

  Then, the system control unit 50 determines whether or not the readout of the analog signal output of the signal charge accumulated from the image sensor 14 in step S518 has been completed (step S519).

  If the reading of the analog signal output has not been completed (NO in step S519), the determination is repeated until the reading of the analog signal output is completed.

  When the reading of the analog signal output accumulated from the image sensor 14 is completed (YES in step S519), the analog processing detection unit 48 detects the end of the analog signal output read operation from the image sensor 14. The system control unit 50 performs control so as to transmit a power supply start signal from the transmission unit 88. When the reception unit 418 receives the power supply start signal, the system control unit 410 controls the operation of the oscillation unit 414 to start. Thereby, the power supply from the charging device 400 is started (step S520).

  The analog signal output read from the image sensor 14 is converted into a digital signal by the A / D converter 16, and predetermined image interpolation processing or color conversion is performed by the image processing unit 20 on the image data converted into the digital signal. Image processing such as processing is performed (step S521).

  Then, the image data subjected to image processing is recorded in the recording areas 202 and 212 of the recording medium 200 and / or the recording medium 210 (step S522).

  The system control unit 50 determines whether or not the electronic camera body 100 is placed on the charging device 400 by the charging device detection unit 89 (step S523).

  When the electronic camera body 100 is placed on the charging device 400 (YES side of step S523), the process returns to step S503.

  When the electronic camera main body 100 is not placed on the charging device 400 (NO side of step S523), the charging device 400 stops the power supply by electromagnetic induction (step S524) and ends.

  As described above, in the electronic device, the charging device, and the charging system according to the present embodiment, the electronic device performs analog signal processing even when the non-contact power supply is received from the charging device 400 while the electronic device is being driven. The power supply is stopped while it is running. Stopping and resuming power supply are shown in steps S508 to S511 and steps S517 to S520.

  Therefore, it is possible to prevent magnetic field noise generated by electromagnetic induction from adversely affecting the driving of the electronic device.

14 Image sensor 42 Focus adjustment unit 43 Distance sensor 44 Exposure control unit 45 Photometric sensor 48 Analog signal processing unit 50 System control unit 86 Secondary coil 88 Transmission unit 100 Electronic camera body

Claims (15)

A sensor used for focus adjustment processing;
A power receiving means for receiving power supplied from a power supply device that performs non-contact power supply;
When the analog signal generation by the sensor is performed using the power received from the power supply device, notification that the output of the sensor is affected by the magnetic field generated when the power supply from the power supply device is performed Control means for performing control for displaying information for display on the display means;
An electronic device comprising: The analog signal is generated by the sensor using electric power received from the power supply device when a battery connected to the electronic device does not have a predetermined remaining amount. The electronic device as described in. The electronic device according to claim 1, further comprising a charge control unit that charges a battery connected to the electronic device using electric power received from the power supply device. A sensor used for exposure control processing;
A power receiving means for receiving power supplied from a power supply device that performs non-contact power supply;
When the analog signal generation by the sensor is performed using the power received from the power supply device, notification that the output of the sensor is affected by the magnetic field generated when the power supply from the power supply device is performed Control means for performing control for displaying information for display on the display means;
An electronic device comprising: 5. The analog signal is generated by the sensor using electric power received from the power supply device when a battery connected to the electronic device does not have a predetermined remaining amount. The electronic device as described in. The electronic device according to claim 4, further comprising a charge control unit that charges a battery connected to the electronic device using electric power received from the power supply device. An image sensor;
A power receiving means for receiving power supplied from a power supply device that performs non-contact power supply;
When the analog signal is generated by the image sensor using the power received from the power supply device, the output of the image sensor is affected by the magnetic field generated when power is supplied from the power supply device. Control means for performing control for displaying information for notifying on the display means;
An electronic device comprising: The analog signal is generated by the image sensor when the battery connected to the electronic device does not have a predetermined remaining amount, and the power received from the power supply device is used. 7. The electronic device according to 7. The electronic apparatus according to claim 7, further comprising a charge control unit that charges a battery connected to the electronic apparatus using electric power received from the power supply device. Sensor means for generating an analog signal;
A power receiving means for receiving power supplied from a power supply device that performs non-contact power supply;
When the analog signal is generated by the sensor means using the power received from the power supply device, the output of the sensor means is affected by the magnetic field generated when the power supply from the power supply device is performed. Control means for performing control for displaying information for notifying on the display means;
An electronic device comprising: The electronic device according to claim 10, wherein the sensor unit includes a sensor used for focus adjustment processing. The electronic device according to claim 10, wherein the sensor unit includes a sensor used for exposure control processing. The electronic device according to claim 10, wherein the sensor unit includes an image sensor. The analog signal is generated by the sensor means when the battery connected to the electronic device does not have a predetermined remaining amount, using the electric power received from the power supply device. The electronic device according to any one of 10 to 13. The electronic device according to claim 10, further comprising a charge control unit that charges a battery connected to the electronic device using electric power received from the power supply device.

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