WO2013129286A1

WO2013129286A1 - Imaging device and information terminal device

Info

Publication number: WO2013129286A1
Application number: PCT/JP2013/054691
Authority: WO
Inventors: 進野崎; 中村　史朗; 和久田島; 一徳宮田
Original assignee: 株式会社ザクティ
Priority date: 2012-02-29
Filing date: 2013-02-25
Publication date: 2013-09-06
Also published as: JP2013179540A

Abstract

A terminal device (20) notifies a camera (10) of a terminal display size, and sends a request signal for image data for a target image to the camera (10). First, the camera (10) sends reduced image data corresponding to the terminal display size to the terminal device (20), and an image (IM_A) is reproduced according to the reduced image data in the terminal device (20). Next, the camera (10) sends image data for magnified display having a relatively large image size. Subsequently, when a magnified display operation indicating that part of a display image is to be magnified is made to the terminal device (20), a high-definition magnified image is displayed on the terminal device (20) on the basis of the image data for magnified display.

Description

Imaging device and information terminal device

The present invention relates to an imaging device such as a digital camera, and an information terminal device such as a mobile phone or a PDA (Personal Data Assistance).

There is a technology for reproducing on the information terminal device side image data acquired and recorded by a digital camera or the like. In a certain conventional technique, the image size of the target image is reduced to the display size of the information terminal device (for example, the image size of (320 × 480)) on the digital camera side, and the reduced image data is transmitted to the information terminal device. (For example, see Patent Document 1 below).

JP 2004-96166 A

According to the above-described conventional method, it is possible to suppress the amount of data communication necessary for reproduction display, compared to the case of transmitting image data for the recording size of a digital camera (for example, image data for several million pixels). The waiting time until playback display can be shortened. However, at the time of adopting this conventional method, when an enlarged display is requested by an operator (browser) of the information terminal device, the information terminal device has to display a coarse image based on the reduced image data.

Therefore, an object of the present invention is to provide an imaging device that contributes to high-speed image reproduction and high image quality on the information terminal device side. It is another object of the present invention to provide an information terminal device that contributes to high-speed image reproduction and high image quality based on data held in an electronic device.

An imaging apparatus according to the present invention is an imaging apparatus capable of communicating with an information terminal device, and includes a recording medium that records original image data of a target image obtained by imaging, and image data based on the original image data. A transmission unit capable of transmitting to the information terminal device; and a reception unit capable of receiving a request signal for requesting transmission of image data based on the original image data, wherein the transmission unit receives the request signal from the reception unit. When the image data based on the original image data is transmitted to the information terminal device in response to the reception of the first image data for the target image and larger than the first image data for the target image The second image data having the image size is continuously transmitted.

The high-speed reproduction of the target image on the information terminal device side is expected by transmitting the first image data having a relatively small image size. On the other hand, high quality reproduction of the target image on the information terminal device side is expected by transmitting the second image data having a relatively large image size.

Specifically, for example, in the imaging apparatus, when transmitting the image data based on the original image data to the information terminal device, the transmission unit transmits the first image data and then transmits the second image data. Good to send.

Thus, high-speed playback of the target image on the information terminal device side is expected.

Another imaging device according to the present invention is an imaging device capable of communicating with an information terminal device, and a recording medium for recording original image data of a target image obtained by photographing, and an image based on the original image data A transmission unit capable of transmitting data to the information terminal device, and a reception unit capable of receiving a request signal for requesting transmission of image data based on the original image data, wherein the transmission unit is provided by the reception unit. In response to receiving the request signal, when transmitting image data based on the original image data to the information terminal device, after transmitting the first image data about the target image, another request signal by the receiving unit The second image data having a larger image size than the first image data for the target image is transmitted without waiting for reception.

An information terminal device according to the present invention is an information terminal device capable of communicating with an electronic device holding original image data of a target image, and transmits a request signal for requesting transmission of image data based on the original image data A possible transmission unit; a reception unit that receives image data based on the original image data transmitted from the electronic device; and a display unit that displays an image based on the image data received by the reception unit. And the receiving unit transmits a first image data for the target image and an image size larger than the first image data for the target image transmitted from the electronic device in response to the request signal. The second image data is continuously received.

The high-speed reproduction of the target image on the information terminal device side is expected by receiving the first image data having a relatively small image size. On the other hand, by receiving the second image data having a relatively large image size, high quality reproduction of the target image on the information terminal device side is expected.

Specifically, for example, the information terminal device further includes an operation reception unit that receives an enlarged display operation that instructs an enlarged display of the display image of the display unit or a reduced display operation that instructs a reduced display of the display image of the display unit. The receiving unit receives the second image data after receiving the first image data, and after receiving the first image data, the display unit receives a first image based on the first image data. Then, when the enlarged display operation is performed on the operation receiving unit, a second image based on the second image data may be displayed.

High-speed reproduction of the target image can be ensured by receiving the first image data in advance. On the other hand, high-definition display in response to the enlarged display operation is also possible based on the second image data received subsequently.

In addition, for example, when the second image is displayed on the display unit, when the enlargement display operation is further performed on the operation receiving unit, the display unit displays a display magnification ratio higher than that of the second image. A third image based on the second image data may be displayed, or when the second image is displayed on the display unit, the reduced display operation is performed on the operation receiving unit. In this case, the display unit may display a fourth image based on the second image data having a display enlargement magnification smaller than that of the second image.

Also, for example, when the second image is displayed on the display unit, when the operation receiving unit performs an operation for reducing the display enlargement magnification to a predetermined reference magnification as the reduction display operation, the display unit An image based on the second image data is displayed so that the angle of view of the display image increases stepwise, and when the angle of view of the display image reaches the entire angle of view of the first image, the display image May be switched to the first image.

In addition, for example, when receiving a data transmission instruction for the target image, an external device transmission unit that transmits the second image data itself or image data based on the second image data to an external device is further provided in the information terminal device. It may be provided.

According to the present invention, it is possible to provide an imaging device that contributes to high-speed image reproduction and high image quality on the information terminal device side. In addition, according to the present invention, it is possible to provide an information terminal device that contributes to high-speed image reproduction and high image quality based on data held in an electronic device.

1 is an overall configuration diagram of an image reproduction system according to an embodiment of the present invention. 1 is a schematic internal block diagram of a digital camera according to an embodiment of the present invention. It is a schematic internal block diagram of the information terminal device which concerns on embodiment of this invention. It is an internal block diagram of the user interface provided in the information terminal device of FIG. It is a figure which shows the original image and image data which are acquired and recorded with a digital camera. It is the figure which showed a mode that the low resolution image (reduced image) was produced | generated from the original image by the image reduction process. It is a figure which shows the high resolution image seen from the low resolution image of FIG. It is an operation | movement flowchart which concerns on 1st Example of this invention. It is an operation | movement flowchart which concerns on 1st Example of this invention. (A) And (b) is a figure which shows a mode that the image area for an enlarged display is set with respect to an image. It is a figure which shows the display image in an information terminal device based on the image data in the image area | region of FIG.10 (b). It is an operation | movement flowchart which concerns on 2nd Example of this invention. It is a figure which shows a mode that the image area for an enlarged display is set with respect to an image. Based on the image data in the image area (420 _B) of FIG. 13 is a diagram showing a display image of the information terminal device. It is a figure which shows a mode that the image area for an enlarged display is set with respect to an image. Based on the image data in the image area (430 _B) of FIG. 15 is a diagram showing a display image of the information terminal device. It is a figure which shows the transition of the display image in an information terminal device.

Hereinafter, an example of an embodiment of the present invention will be specifically described with reference to the drawings. In each of the drawings to be referred to, the same part is denoted by the same reference numeral, and redundant description regarding the same part is omitted in principle. In this specification, for simplification of description, a symbol or reference that refers to information, signal, physical quantity, state quantity, member, or the like is written to indicate information, signal, physical quantity, state quantity or Names of members and the like may be omitted or abbreviated.

FIG. 1 is an overall configuration diagram of an image reproduction system according to an embodiment of the present invention. The image reproduction system includes an electronic device 1 as a first electronic device and an electronic device 2 as a second electronic device. The

electronic devices

1 and 2 can perform bidirectional communication. The communication may be wireless communication or wired communication.

FIG. 2 is a schematic internal block diagram of a digital camera 10 (hereinafter may be abbreviated as “camera 10”) which is an example of the electronic apparatus 1. A camera 10 as an imaging device includes each part referred to by reference numerals 101 to 111.

The imaging unit 101 obtains an image signal of a subject image by photographing a subject that falls within the photographing angle of view using the imaging element. The imaging unit 101 includes an optical system, an aperture, and an imaging device (solid-state imaging device) such as a CCD (Charge Coupled Device) or CMOS (Complementary Metal Oxide Semiconductor) image sensor. Is output. The image processing unit 102 performs predetermined image processing (for example, digitization processing, edge enhancement processing, noise reduction processing, demosaicing processing, image compression processing) on the output image signal of the imaging device, so that the imaging device The image data of the target image based on the output image signal is generated.

The main control unit 103 includes a CPU (Central Processing Unit) and the like, and comprehensively controls the operation of each part in the camera 10. The internal memory 104 is formed of SDRAM (Synchronous Dynamic Random Access Memory) or the like, and temporarily stores various data generated in the camera 10. The display unit 105 is a display device having a display screen such as a liquid crystal display panel, and displays an arbitrary image including a target image and a recorded image of the recording medium 106 under the control of the main control unit 103. The display unit 105 includes a touch panel 111.

The recording medium 106 is a nonvolatile memory such as a card-like semiconductor memory or a magnetic disk, and records arbitrary data including image data of the target image under the control of the main control unit 103. In this specification, data recording, holding and storage have the same meaning. The operation unit 107 includes buttons including a shutter button that receives an instruction to capture a target image, and accepts various operations from the outside. Some buttons including the shutter button may be buttons on the touch panel 111. An operator of the camera 10 can give various instructions to the camera 10 by performing predetermined operations on the operation unit 107 or the touch panel 111. Any one of the operation unit 107 and the touch panel 111 can be omitted from the camera 10.

The communication unit 108 performs arbitrary data communication with a device having a communication function other than the camera 10 according to an arbitrary communication standard. Devices having communication functions other than the camera 10 include the electronic device 2. The communication unit 108 includes a transmission unit 109 and a reception unit 110. The transmission unit 109 can transmit an arbitrary signal (including data) to the electronic device 2, and the reception unit 110 can receive an arbitrary signal (including data) from the electronic device 2. Note that transmission by the transmission unit 109 is performed under the control of the main control unit 103.

FIG. 3 is a schematic internal block diagram of an information terminal device 20 (hereinafter sometimes abbreviated as the terminal device 20) which is an example of the electronic device 2. The terminal device 20 includes parts referred to by reference numerals 201 to 211. The terminal device 20 has a telephone function and may be a device classified as a so-called smartphone. However, the telephone function (that is, the telephone function unit 201) can be omitted from the terminal device 20.

The telephone function unit 201 includes parts necessary for a call (for example, a microphone, an acoustic signal processing circuit, and a speaker), and implements a telephone function using the communication unit 208. The image processing unit 202 executes predetermined image processing (details will be described later). The main control unit 203 includes a CPU (Central Processing Unit) and the like, and comprehensively controls the operation of each part in the terminal device 20. The internal memory 204 is formed of SDRAM (Synchronous Dynamic Random Access Memory) or the like, and temporarily stores various data generated in the terminal device 20. The display unit 205 is a display device having a display screen such as a liquid crystal display panel, and displays an arbitrary image including a recorded image of the recording medium 206 under the control of the main control unit 203. The display unit 205 includes a touch panel 211.

The recording medium 206 is a nonvolatile memory such as a card-like semiconductor memory or a magnetic disk, and records arbitrary data under the control of the main control unit 203. The operation unit 207 includes buttons, keys, dials, and the like, and accepts various operations from the outside. An operator of the terminal device 20 can give various instructions to the terminal device 20 by performing a predetermined operation on the operation unit 207 or the touch panel 211. Hereinafter, as illustrated in FIG. 4, a part including the operation unit 207 and the touch panel 211 is referred to as a user interface (operation reception unit) 220. However, any one of the operation unit 207 and the touch panel 211 can be omitted from the terminal device 20.

The communication unit 208 performs arbitrary data communication with a device having a communication function other than the terminal device 20 in accordance with an arbitrary communication standard. Devices having communication functions other than the terminal device 20 include the electronic device 1 (the camera 10 in the present embodiment). The communication unit 208 includes a transmission unit 209 and a reception unit 210. The transmission unit 209 can transmit an arbitrary signal (including data) to the electronic device 1, and the reception unit 210 can receive an arbitrary signal (including data) from the electronic device 1. Note that transmission by the transmission unit 209 is performed under the control of the main control unit 203.

Image IM _O shown in FIG. 5 is an example of a target image recorded on the recording medium 106. In the present embodiment, it is assumed that the target image is a still image, but the target image may be a moving image. Although the image size of the target image takes various forms, the image size of the target image recorded on the recording medium 106 is referred to as an original image size, and the target image having the original image size is specifically referred to as an original image. Image IM _O in FIG. 5 is assumed to be the original image. Original image IM _O is, for example, an image obtained by imaging using the imaging unit 101 (i.e., an image based on an output image signal of the imaging element of the imaging unit 11). The image size of the focused two-dimensional image or the display size of the focused display area is represented by (X × Y), and the image size of the image data of the two-dimensional image is also represented by (X × Y) (X and Y Is an integer). Regarding an arbitrary two-dimensional image, the image size of the two-dimensional image and the image size of the image data of the two-dimensional image are the same. X and Y respectively represent the number of pixels in the horizontal direction and the vertical direction of the focused two-dimensional image, or represent the number of pixels in the horizontal direction and the vertical direction of the focused display area, respectively. The image data of the original image IM _O has an image size of (X _O × Y _O ) (X _O and Y _O are integers). Image size (X _{_O} × Y _{_O),} for example, coincides with the recorded pixels of the captured image that has been set in the camera 10 at the time of photographing and recording of the original image IM _O. The product (X _O × Y _O ) can have a value of several hundred thousand to several tens of million.

Each of the

image processing units

102 and 202 can perform image reduction processing for reducing a target image, which is an arbitrary two-dimensional image (for example, the original image IM _O ), or image expansion processing for expanding the target image. Each of the

image processing units

102 and 202 can obtain a reduced image of the attention image by the image reduction processing, and can obtain an enlarged image of the attention image by the image enlargement processing. The image reduction process is realized by using a known thinning process or resampling. The image enlargement process is realized by using known resampling including a complement process. The image reduction process for the target image is a process for reducing the image size of the target image. Therefore, if the target image is the original image IM _O, the image size of the original image IM _O of the reduced image is smaller than the image size of the original image _{_{_{IM O (X O × Y O}}} ). The image enlargement process for the target image is a process for increasing the image size of the target image. Therefore, if the target image is the original image IM _O, image size of the enlarged image of the original image IM _O is larger than the image size of the original image _{_{_{IM O (X O × Y O}}} ).

In FIG. 6, an image IM _A that can also be referred to as a low resolution image is an example of a reduced image of the original image IM _O , and the image size of the image IM _A is (X _A × Y _A ) (X _A and Y _A Is an integer). Thus, the image size of the image _{_{_{IM A (X A × Y A}}} ) and resolution, the image size of the original image _{_{_{IM O (X O × Y O}}} ) and smaller than the resolution. 7, the image IM _B which can also be referred to as high resolution image is based on an original image IM _O, an enlarged display image having an image size of _{_{(X B × Y B) (}} X B and _{Y B} are integers ). Image IM _B has a higher resolution than image IM _A. Thus, the image size of the image _{_{_{IM B (X B × Y B}}} ) is larger than the image size of the image _{_{_{IM A (X A × Y A}}} ). Image IM _B is, for example, than when obtaining an image IM _A were obtained with a small image reduction processing of the reduction degree, a reduced image of the original image IM _O. However, the image IM _B is an original image IM to _O may be itself or may be a magnified image of the original image IM _O.

The angle of view of each of the images IM _A and IM _B matches the angle of view of the original image IM _O , and the aspect ratio is the same between the images IM _O , IM _A, and IM _B. As apparent from the above description, the image IM _O and IM _A is the original image and the reduced image of each target image, the image IM _B is an original image, a reduced image or an enlarged image of the target image. If the difference in resolution is ignored, the images IM _A and IM _B are the same images as the image IM _O , so each of the images IM _A and IM _B may be considered as a kind of target image. Image _IM O, the image data of the IM _A and IM _B, respectively, symbols DATA _O, expressed in DATA _A and DATA _B, called respectively, the original image data, even the reduced image data and the enlarged display image data.

Hereinafter, specific examples of operations of the camera 10 and the terminal device 20 will be described in a plurality of embodiments. As long as there is no contradiction, any two or more of the embodiments described below can be combined.

<< First Example >>
A first embodiment of the camera 10 and the terminal device 20 will be described. 8 and 9 are flowcharts showing the operation procedure of the camera 10 and the terminal device 20 according to the first embodiment. The terminal device 20 has a function of displaying an image held by the camera 10 using communication. Here, it is assumed that the terminal device 20, the display of the target image corresponding to the original image IM _O is required.

In this case, first, in step S11, the transmission unit 209 of the terminal device 20 transmits a notification signal for notifying the camera 10 of the terminal display size and a request signal for requesting transmission of image data of the target image. The terminal display size is the display size of the display area DR assigned to display the target image. Here, the terminal display size is (X _A × Y _A ) (for example, (X _A , Y _A ) = (480, 320)). The display area DR is the entire display area itself of the display unit 205 or a part of the entire display area. The image data requested by the request signal in step S11 is image data (for example, DATA _O , DATA _A or DATA _B ) based on the original image data of the target image. For simplification of description, it is assumed that the aspect ratio of the target image (IM _O , IM _A or IM _B ) and the aspect ratio of the display area DR are the same.

In the camera 10, the receiving unit 110 receives the notification signal and the request signal. In step S12 subsequent to step S11, in response to the notification signal and request signal, the image processing unit 102, reduced by forming the image reduction processing according to the notification signal to the original image IM _O image IM A _(i.e., the terminal generates a reduced image) having the same image size as the display size, the transmission unit 109, this image data of the obtained reduced image IM _a by, i.e. it transmits the reduced image data dATA _a to the terminal device 20.

The reduced image data DATA _A from the transmission unit 109 is received by the reception unit 210. The terminal device 20 stores the reduced image data DATA _A received by the receiving unit 210 in the internal memory 204 or the recording medium 206. Display after receiving the reduced image data DATA _A, in step S13, the display unit 205 of the terminal device 20, an image based on received image data DATA _A, i.e. a reduced image IM _A having an image size of _{(X _A} × _Y _A) Displayed in the area DR.

On the other hand, after the transmission of the reduced image data DATA _A is completed, in step S14, the transmission unit 109 of the camera 10 transmits the enlarged display image data DATA _B having an image size (X _B × Y _B ) to the terminal device 20, The image data DATA _B is received by the receiving unit 210. The terminal device 20 stores the image data DATA _B received by the receiving unit 210 in the internal memory 204 or the recording medium 206. In FIG. 8, the transmission in step S14 is performed after the display in step S13. However, the transmission in step S14 may be performed at any time after the transmission of the reduced image data DATA _A is completed.

Transmission of the image data DATA _A and DATA _B by the transmission unit 109 is continuously performed in response to reception of a request signal by the reception unit 110 (that is, reception of a single request signal in step S11). . That is, the camera 10 transmits the image data DATA _A from the transmission unit 109 to the terminal device 20 in response to reception of the request signal (single request signal), and then receives other request signals at the reception unit 110 in particular. Even without reception (that is, without waiting for reception of another request signal by the reception unit 110), the image data DATA _B is promptly transmitted from the transmission unit 109 to the terminal device 20. When attention is paid to the terminal device 20, it can be said as follows. After the image data DATA _A transmitted from the camera 10 in response to the single request signal in step S11 is received by the reception unit 210, the transmission unit 209 transmits it from the camera 10 without transmitting another request signal. The received image data DATA _B is received by the receiving unit 210. The other request signal is a signal other than the request signal in step S11, for example, a signal requesting the terminal device 20 to transmit the image data DATA _B. The other request signal may be a signal that can be transmitted from the transmission unit 209 of the terminal device 20.

A user interface 220 (hereinafter referred to as UI 220) of the terminal device 20 is an enlarged display operation for instructing an enlarged display of a display image of the display unit 205 (specifically, a display image of the display region DR) from an operator of the terminal device 20. Alternatively, a reduced display operation for instructing reduced display of a display image on the display unit 205 (specifically, a display image of the display region DR) can be received. In the following description, unless otherwise specified, the display and display image refer to the display and display image in the display region DR. In the following description, an operator refers to an operator of the terminal device 20 unless otherwise specified. Enlarged display refers to enlarging and displaying a part of the current display image, and is accompanied by a reduction in the angle of view of the display image. Reduced display refers to displaying an image that includes the current display image and has a wider angle of view than the current display image.

Now, in step S15 subsequent to step S14 (see FIG. 9), when the image IM _A is displayed on the display unit 205, and UI220 receives an enlarged display operation by the operator. By this enlargement display operation, an image region 410 to be enlarged and displayed is designated. In step S15, the image area 410 is a part of the display area DR (see FIG. 8) and a part of the display image of the display area DR. The operator may be able to specify the center position of the image area 410 on the display image via the UI 220 (the same applies to image areas 420 and 430 described later; see FIG. 12 and the like). In FIG. 10 (a), the image region 410 _A is a part of the total image area of the image IM _A, an image area corresponding to the image area 410. In FIG. 10B, an image area 410 _B is a part of the entire image area of the image IM _B and is an image area corresponding to the image area 410. In step S15, the image and the angle of the image region 410 is the same as the image and the angle of the image region 410 _A. Ignoring the resolution difference image and the angle of the image region 410 in _B is the same as the image and the angle of the image region 410 _A.

When the image area 410 is designated by the enlargement display operation, in step S16, the image processing unit 202 enlarges the display image data DATA _B so that the image in the image area 410 is enlarged and displayed using the display area DR. Based on this, an image 410 _DSP (see FIG. 11) is generated. Specifically, for example, the image processing unit 202 extracts the image data in the image area 410 _B from the enlarged display image data DATA _B held in the internal memory 204 or the recording medium 206, and the extracted image area 410 _B An image 410 _DSP having an image size of (X _A × Y _A ) based on the image data DATA _B is executed by executing an image reduction process or an image enlargement process for adjusting the image size of the image data to the terminal display size. Generate. The image 410 _DSP corresponds to an enlarged image of the image in the image area 410 designated in step S15. The generated image 410 _DSP is displayed in the display area DR (step S16).

As described above, if the method of performing the image reduction processing on the camera 10 side and transmitting the reduced image to the terminal device 20 is adopted, it is related to the transmission of the display image as compared with the method of communicating the image data of the original image. The amount of communication data is suppressed, and the waiting time until display is shortened. Further, the processing load on the terminal device 20 side is also reduced.

If the terminal device 20 holds only the reduced image data DATA _{A and} the operator (browser) of the terminal device 20 requests enlarged display, the terminal device 20 is coarse based on the reduced image data DATA _A. I have to display an image. If a method of issuing a transmission request for the image data DATA _B to the camera 10 after receiving an enlarged display operation in order to display a fine image, response display for the enlarged display operation is delayed. In view of this, the camera 10 according to the present embodiment first transmits the reduced image data DATA _A to the terminal device 20 in response to the reception of the request signal for the image data of the target image, and after the transmission is completed, the camera 10 has a relatively high resolution. High image data DATA _B is transmitted to the terminal device 20. As a result, since the terminal device 20 first receives the reduced image data DATA _A corresponding to the terminal display size, the target image can be quickly displayed. The terminal device 20 receives the image data DATA _B following the reception of the image data DATA _A without waiting for an enlargement display operation from the operator. Can be displayed.

<< Second Example >>
A second embodiment of the camera 10 and the terminal device 20 will be described. In the second embodiment, technologies that can be added to the first embodiment will be described. FIG. 12 is a flowchart illustrating the operation procedure of the camera 10 and the terminal device 20 according to the second embodiment. The processes in steps S21 to S23 can be executed following the processes in steps S11 to S16.

In a state where the image 410 _DSP is displayed in step S16 of FIG. 9, the UI 220 receives an enlargement display operation or a reduction display operation from the operator in step S21. In step S21, when the UI 220 receives an enlargement display operation, a shift to step S22 occurs. On the other hand, when the UI 220 receives a reduction display operation, a shift to step S23 occurs.

First, consider a case where the UI 220 receives an enlargement display operation in step S21. By this enlargement display operation, an image area 420 to be enlarged and displayed is designated. In step S21, the image area 420 is a part of the display area DR (see FIG. 8) and a part of the display image of the display area DR. In FIG. 13, an image area 420 _B is a part of the entire image area of the image IM _B and is an image area corresponding to the image area 420. The image area 420 _B is smaller than the image area 410 _B (see also FIG. 10B).

When the image area 420 is designated by the enlargement display operation, in step S22, the image processing unit 202 enlarges the image data for enlargement display DATA _B so that the image in the image area 420 is enlarged and displayed using the display area DR. Based on this, an image 420 _DSP (see FIG. 14) is generated. Specifically, for example, the image processing unit 202 extracts the image data in the image area 420 _B from the enlarged display image data DATA _B held in the internal memory 204 or the recording medium 206, and the extracted image area 420 _B The image 420 _DSP having an image size of (X _A × Y _A ) based on the image data DATA _B is executed by executing an image reduction process or an image enlargement process for adjusting the image size of the image data to the terminal display size. Generate. The generated image 420 _DSP is displayed in the display area DR (step S22).

The reciprocal of the ratio of the angle of view of the display image with respect to the overall angle of view of the target image (that is, the image IM _O , IM _A or IM _B ) is called a display magnification. A display magnification of 1 × is referred to as a reference magnification. Therefore, the display magnification when the entire target image (that is, the image IM _O , IM _A or IM _B ) is displayed in the display region DR is the reference magnification (1 ×). Display magnifications when the

images

410 _DSP , 420 _DSP , and 430 _DSP are displayed in the display area DR are represented by symbols R ₄₁₀ , R ₄₂₀ , and R _430, respectively (the image 430 _DSP will be described later). Then, the inequality “R ₄₂₀ > R ₄₁₀ > R ₄₃₀ > 1” is established.

Next, consider a case where the UI 220 receives a reduction display operation in step S21. This reduction display operation instructs to reduce the display enlargement magnification. Specifically, here, it is considered that the display enlargement magnification decreases from the magnification R ₄₁₀ to the magnification R ₄₃₀ by the reduction display operation. An image area 430 _{B in} FIG. 15 is an image area to be displayed corresponding to the display magnification R ₄₃₀ and is a part of the entire image area of the image IM _B. Image area 430 _B is larger than image area 410 _B.

When the image area 430 _B is designated by the reduced display operation, in step S23, the image processing unit 202 displays the enlarged display image data DATA so that the image in the image area 430 _B is displayed using the display area DR. _An image 430 _DSP (see FIG. 16) is generated based on _B. Specifically, for example, the image processing unit 202 extracts the image data in the image area 430 _B from the enlarged display image data DATA _B held in the internal memory 204 or the recording medium 206, and the extracted image area 430 _B By executing the image reduction process or the image enlargement process for adjusting the image size of the image data to the terminal display size, the image 430 _DSP having the image size of (X _A × Y _A ) based on the image data DATA _B is obtained. Generate. The generated image 430 _DSP is displayed in the display area DR (step S23).

As described above, when the enlarged display operation during the display of the image _{410 DSP} is made, it is possible to display a large image _{420 DSP} of the display magnification than image _{410 DSP} on the display unit 205, an image ₄₁₀ when _DSP of the display When the reduced display operation is performed, the display unit 205 can display the image 430 _DSP having a display magnification smaller than that of the image 410 _DSP .

If the reduction display operation received by the UI 220 in step S21 is an operation for reducing the display enlargement magnification from a magnification higher than the reference magnification to the reference magnification, the display unit 205 displays the image processing unit 202 as shown in FIG. It cooperates with, sequentially switching display images angle of the display image based on the image data dATA _B to increase stepwise, reach the entire angle of view angle image IM _a or IM _B of the display image display image at the time when the may be switched to the image IM _a based on the reduced image data dATA _a. When the angle of view of the display image reaches the entire angle of view of the image IM _A or IM _B , it is also possible to display an image obtained by performing image reduction processing on the image data DATA _B without performing the switching described above. However, when the switching is performed, the processing load is reduced by the amount that the image reduction process is unnecessary.

<< Third Example >>
A third embodiment of the camera 10 and the terminal device 20 will be described. The third embodiment can be implemented in combination with the first or second embodiment. The external device transmitter provided in the terminal device 20 sends arbitrary data to an external device other than the camera 10 and the terminal device 20 via a network such as the Internet or via a bus wiring. Can be sent. The external device is, for example, a server device that operates a website such as a so-called social networking service or a blog, or a personal computer. The external device transmission unit may be included in the transmission unit 209.

At an arbitrary timing, the UI 220 can receive a data transmission instruction for the target image from the operator. In many cases, the UI 220 receives the data transmission instruction after the reception unit 210 receives the image data DATA _B. For example, at the timing of the image based on the image IM _A or the image data DATA _B is being displayed, when the UI220 receives the data transmission instruction, the transmission unit for the external device, image data DATA _B itself, or the image data DATA image data (e.g., based on the image data dATA _B, a small image data of the image size than the image data dATA _B, or a part of the image data dATA _B) based on _B to be able to send to the external device.

Thus, the image data DATA _B is transmitted to the terminal device 20 before the data transmission instruction while enjoying the effect of shortening the display waiting time by transmitting the reduced image data DATA _A from the camera 10 to the terminal device 20 in advance. Thus, when the data transmission instruction is given, the image data DATA _B can be transmitted to the external device in a short time.

When data transmission to an external device (such as a server device) is scheduled, it is desirable to match the image data DATA _B with the original image data DATA _O. That is, for example, when the image data DATA _B coincides with the original image data DATA _O and the UI 220 receives the data transmission instruction, the original image data DATA _O may be transmitted from the external device transmission unit to the external device. However, as described above, in the third embodiment, the image data DATA _B may be image data of a reduced image or an enlarged image of the original image IM _O.

<< Deformation, etc. >>
The embodiment of the present invention can be appropriately modified in various ways within the scope of the technical idea shown in the claims. The above embodiment is merely an example of the embodiment of the present invention, and the meaning of the term of the present invention or each constituent element is not limited to that described in the above embodiment. The specific numerical values shown in the above description are merely examples, and as a matter of course, they can be changed to various numerical values. As annotation items applicable to the above-described embodiment, annotations 1 to 4 are described below. The contents described in each comment can be arbitrarily combined as long as there is no contradiction.

[Note 1]
Two or more target images may be transmitted as image data transmission targets. When transmitting the image data for the two target images from the camera 10 to the terminal device 20, the camera 10 transmits the second target image after transmitting the reduced image data and the enlarged display image data for the first target image. The reduced image data and the enlarged display image data for the first and second target images may be transmitted after the reduced image data for the first and second target images are transmitted. Display image data may be transmitted. The same applies to the case where image data for three or more target images is transmitted from the camera 10 to the terminal device 20.

[Note 2]
The camera 10 operates in any one of a plurality of operation modes, and the plurality of operation modes include a shooting mode for acquiring and recording image data of a target image by shooting. The transmission of the image data of the target image from the camera 10 to the terminal device 20 may be executed in the shooting mode. For example, before the image data of the target image is acquired by photographing with the camera 10, the terminal device 20 can transmit the notification signal and the request signal to the camera 10 (step S11 in FIG. 8). reference). In this case, the image data DATA _O of the original image IM _O as an example of the object image by the camera 10 is actually obtained and recorded, the camera 10, without waiting for the reception of a new request signal, promptly The image data DATA _A and DATA _B may be transmitted to the terminal device 20. Again, with respect to the camera 10 is the terminal apparatus 20, it is preferable to transmit the image data DATA _A before the image data DATA _B, also transmit image data DATA _B earlier than the image data DATA _A It is possible.

[Note 3]
The electronic device 1 may be any electronic device having a function for recording and transmitting image data other than a digital camera. Similarly, the electronic device 2 may be any electronic device having image data reception and display functions.

[Note 4]
The

electronic device

1 or 2 according to the present embodiment can be configured by hardware or a combination of hardware and software. When the

electronic device

1 or 2 is configured using software, a block diagram of a part realized by the software represents a functional block diagram of the part. A function realized using software may be described as a program, and the function may be realized by executing the program on a program execution device (for example, a computer).

1, 2 Electronic equipment
DESCRIPTION OF SYMBOLS 10 Digital camera 20 Information terminal device 109 Transmission part 110 Reception part 205 Display part 209 Transmission part 210 Reception part

Claims

An imaging device capable of communicating with an information terminal device,
A recording medium for recording original image data of a target image obtained by photographing;
A transmission unit capable of transmitting image data based on the original image data to the information terminal device;
A receiving unit capable of receiving a request signal for requesting transmission of image data based on the original image data,
In response to receiving the request signal by the receiving unit, the transmitting unit transmits first image data about the target image and the target when transmitting image data based on the original image data to the information terminal device. An image pickup apparatus that continuously transmits second image data having an image size larger than that of the first image data for an image.
The transmission unit transmits the second image data after transmitting the first image data when transmitting the image data based on the original image data to the information terminal device. The imaging device described.
An imaging device capable of communicating with an information terminal device,
A recording medium for recording original image data of a target image obtained by photographing;
A transmission unit capable of transmitting image data based on the original image data to the information terminal device;
A receiving unit capable of receiving a request signal for requesting transmission of image data based on the original image data,
In response to receiving the request signal by the receiving unit, the transmitting unit transmits first image data on the target image when transmitting image data based on the original image data to the information terminal device. An image pickup apparatus that transmits second image data having a larger image size than the first image data for the target image without waiting for reception of another request signal by the receiving unit.
An information terminal device capable of communicating with an electronic device that holds original image data of a target image,
A transmission unit capable of transmitting a request signal for requesting transmission of image data based on the original image data;
A receiving unit for receiving image data based on the original image data transmitted from the electronic device;
A display unit for displaying an image based on the image data received by the receiving unit,
The receiving unit has first image data for the target image and a larger image size than the first image data for the target image, transmitted from the electronic device in response to the request signal. An information terminal device that continuously receives two image data.
An operation receiving unit for receiving an enlarged display operation for instructing an enlarged display of the display image of the display unit or a reduced display operation for instructing a reduced display of the display image of the display unit;
The receiving unit receives the second image data after receiving the first image data;
After receiving the first image data, the display unit displays a first image based on the first image data, and then when the enlarged display operation is performed on the operation receiving unit, the second image is displayed. The information terminal device according to claim 4, wherein a second image based on the data is displayed.
When the second image is displayed on the display unit, when the enlargement display operation is further performed on the operation receiving unit, the display unit has a display magnification larger than that of the second image. Displaying a third image based on the second image data, or
When the second image is displayed on the display unit, when the reduced display operation is performed on the operation receiving unit, the display unit has a display magnification smaller than that of the second image. The information terminal device according to claim 5, wherein a fourth image based on the second image data is displayed.
When the second image is displayed on the display unit, when the operation for lowering the display enlargement magnification to a predetermined reference magnification is performed on the operation reception unit as the reduction display operation, the display unit displays the display An image based on the second image data is displayed so that the angle of view of the image increases stepwise, and the display image is displayed when the angle of view of the display image reaches the entire angle of view of the first image. The information terminal device according to claim 5, wherein the information terminal device is switched to one image.
The apparatus further comprises a transmission unit for an external device that transmits the second image data itself or image data based on the second image data to an external device when receiving a data transmission instruction for the target image. The information terminal device according to any one of claims 4 to 7.