JP2003169116A - Portable terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal in which a real image can be confirmed even when photographing user's own face and further a space for locating a component such as a display is not limited. <P>SOLUTION: A foldable portable telephone set 411 has a first display on the side of a folded face not shown in Fig. and a second display 405 and a lens 406 of a camera are located on the outside face. Therefore, when photographing user's own face, the image can be confirmed by being displayed on the second display 405. The locations of the second display 405 and the lens 406 of the camera are not limited. Further, when photographing user's own face in the similar configuration of a non-folding wireless terminal, the image can be confirmed. Various kinds of information can be displayed on the second display 405 except for photographing. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a mobile phone, a PH.
The present invention relates to a portable terminal as a portable communication terminal such as S and PDA, and particularly to a portable terminal with a camera for photographing.

[0002]

2. Description of the Related Art PHS (Personal Handyphone Syste)
m), PDA (Personal Data Assistance, Personal Di
Mobile terminals such as gital Assistants) have become widespread, and it is an era in which the characteristics of each product are examined and the purchase is selected according to the needs. At the same time, these mobile terminals also have additional functions in addition to the original functions to differentiate them from other models.

One of these additional functions is a camera function. A mobile phone will be described as an example. Since the mobile phone is originally connected to the network for a call or communication, the image can be acquired through the network. For example, if an image taken by a camera is stored in a home page or a predetermined storage location on a network by a computer, the image can be obtained from the location by the mobile phone.

However, this requires an operation of accessing these storage locations on the network and an operation of selecting an image at the access destination.
Not only is it troublesome, but it lacks immediacy. Therefore, a mobile phone with a camera appeared to meet the demands such as easily recording an image while moving and adding it to an e-mail as needed, or sending a video together during a conversation. There is.

With such a mobile phone with a camera, it is possible to take a normal image of another person or a landscape, or to take an image of oneself. However, the camera attached to the mobile phone is provided on the opposite side of the display that displays information such as images, as in a normal digital camera. Therefore, when taking an image other than oneself, the range of the image or the like can be confirmed on the display. However, when taking your own image, if you place your face facing the front part of the camera, the display will be located on the opposite side, and you should check in advance how the image will appear. I can't.

FIG. 14 shows a main part of a portable telephone which can confirm the photographing range when taking an image of itself in order to solve such a drawback. On the back of this mobile phone 101 is a small camera lens 1
02 is protruding. Immediately next to the lens 102 of the camera, a spherical mirror 103 is processed. As shown in this figure, when the user's face is photographed from the back side of the mobile phone 101, positioning may be performed within the range of the image reflected on the mirror 103.

However, in the case where the mobile phone of this method is too close to the mobile phone 101, parallax, that is, the range of the visible image and the range of the captured image are different from each other, and the image may be missing. Also,
When the image is too close to the mobile phone 101, the captured image is blurred, but this cannot be directly confirmed by the mirror 103. Further, if the back of the face is bright or the entire face is dark, the exposure of the face portion may not be performed accurately, and this cannot be discriminated by the mirror 103 either. Therefore, there has been proposed a mobile phone capable of directly confirming one's face even when photographing it.

FIG. 15 shows a first proposal of a mobile phone capable of photographing while looking at one's face on the display. In this proposal disclosed in Japanese Unexamined Patent Publication No. 9-130489, an image pickup section 113 is arranged above a mobile phone body 111 via a rotation mechanism 112. Imaging unit 1
13 is 180 degrees or 360 as shown by arrow 114
Since the camera can be rotated once, the lens 115 of the camera can be directed to the display 116 side as shown in the figure, so that the image of the subject to be photographed can be displayed on the display 116.

Further, the image pickup unit 113 is moved from this position by 180
When rotated once, the subject on the back side of the mobile phone body 111 can be displayed on the display 116, and shooting can be performed while checking the image similarly. According to this proposal, it is possible to take a picture while the imaging unit 113 is rotated at any other angle.

FIG. 16 shows a second proposal of a mobile phone capable of taking a picture while looking at one's face on the display. According to this proposal disclosed in Japanese Patent Application Laid-Open No. 10-65780, an image pickup unit 123 that rotates around this axis is arranged in the hinge mechanism 122 of a foldable mobile phone 121, and the front face of the image pickup unit 123 is arranged. Camera lens 12
4 are arranged. Further, the display 126 is arranged in the first case 125 of the mobile phone 121, and the operation portion 128 is arranged in the second case 127. Notch portions 129 and 130 are arranged at locations near the hinge mechanism 122 of these two cases 125 and 127, respectively, to secure a space in which the image pickup portion 123 can rotate.

[0012] Such a second proposed mobile phone 121
Then, by pointing the image capturing unit 123 to the display 126 side, the user can shoot while confirming his / her face. Further, by rotating the image pickup unit 123 and directing the lens 124 of the camera to the other side of the cutout portion 129, it is possible to shoot while confirming a normal subject such as a landscape on the display 126.

[0012]

However, in the proposal shown in FIG. 15, the image pickup unit 1 is provided on the upper portion of the mobile phone main body 111.
Since 13 is attached, there is a problem that the overall length of the mobile phone becomes long, or each part such as the display 116 becomes relatively small, resulting in poor usability. Further, in the second proposal shown in FIG. 16, the first
Since it is necessary to provide notches 129 and 130 of considerable size in the case 125 and the second case 127, there is no room in the space for disposing the display 126 and the operation unit 128 despite the folding type. There was a problem. In addition, there is a problem in that when an attempt is made to make a call with the lens 124 of the camera facing the user, the image capturing unit 123 hits the face and it is difficult to talk.

Although the mobile phone has been described above as an example, other mobile terminals equipped with a camera for taking a still picture or a moving picture also have the same problem.

Therefore, an object of the present invention is to provide a portable terminal which can confirm an actual image even when photographing one's face and which does not limit the arrangement space of components such as a display. is there.

[0015]

According to another aspect of the present invention, there is provided a portable terminal which comprises: (a) a communication circuit and a first surface as one surface of a housing containing at least an image processing circuit for processing a photographed image. The first display is placed on the surface, and (b) the camera that shoots the front of this surface and the image that this camera shoots are displayed in a predetermined mode on the second surface opposite the first surface. A second display for displaying is arranged.

That is, according to the first aspect of the present invention, the first display is arranged on one surface of one casing in which at least the communication circuit and the image processing circuit for processing the photographed image are incorporated, and the other side of the first display is arranged. On the surface, a camera for photographing the front and a second display for displaying an image photographed by the camera in a predetermined mode are arranged. Therefore, when taking a picture of one's face, it is possible to set a mode for taking a picture and take a picture while looking at the image of the camera displayed on the second display.

According to the second aspect of the present invention, (a) a first casing, and (b) a second casing which is arranged to be openable and closable with respect to the first casing via a hinge mechanism. (C) The lens of the camera attached to the surface of one of the first and second housings opposite to the surface on the side to be closed, and (D) the housing of the first housing. A first display arranged on the surface to be closed and displaying an image taken by using a lens of the camera; and (e) the first or second display.
Of the housing of the camera on the side opposite to the surface on which the lens of the camera is mounted or the housing having the surface on which the lens is mounted when the first and second housings are closed. A second display arranged on the surface located on the side for displaying an image taken by using the lens of the camera, and (e) a communication circuit built in the first and / or second housing or one of them and An image processing circuit for processing an image is provided in a mobile terminal.

That is, in the invention described in claim 2, unlike the invention described in claim 1, a portable terminal in which the first housing and the second housing are opened and closed by a hinge mechanism is handled. In the case of the present invention, the first display is the first
It is arranged on the surface of the housing to be closed. The second display that can display the image of the camera when taking a picture of one's face is the first housing and the first housing that are located outside when the first housing and the second housing are closed and put together. It is arranged on either side of the two housings. The same applies to cameras. When the camera lens and the second display are arranged on the same surface, the second display is used when taking a picture of one's face with the first housing and the second housing closed. You can check the image at. With the first housing and the second housing opened, the camera lens and the second display may be arranged on the same surface, or may be arranged on different surfaces on the housing side. Similarly, the image can be confirmed.

According to a third aspect of the present invention, in the portable terminal according to the first aspect, the first and second displays are separately arranged on the front and back sides of a flat plate-shaped casing, respectively. The first display is characterized by having a larger size than the second display.

That is, according to the invention described in claim 3, the case where the wireless terminal is constituted by one housing is used, in which the first display is large for main display and the second display is for sub display. small. In this invention, the lens of the camera is arranged on the surface on which the second display is arranged.

According to a fourth aspect of the present invention, in the portable terminal according to the first or second aspect, the second display displays incidental information relating to communication, while the second image is displayed in the mode in which the camera is taking an image. It is characterized by displaying an image.

That is, in the invention according to claim 4, not only the second display displays the image taken by the camera, but also in the state where this display is not performed, or together with this display, accompanying information related to communication is displayed. It shows that you can do it. Since the necessary information can be viewed on the second display without bothering to look at the first display, there is no annoyance. In addition, power consumption can be saved depending on the display mode.

According to a fifth aspect of the present invention, in the portable terminal according to the first or second aspect, the focus determination means for determining whether the camera is in focus and the focus for adjusting the focus when the camera is out of focus. It is characterized by comprising an adjusting means and an in-focus notifying means for notifying when the in-focus determining means determines that the subject is in focus.

That is, in the fifth aspect of the present invention, a mechanism for focusing the camera is provided, and when the focus is provided, this is notified, so that an out-of-focus image is rarely obtained.

According to a sixth aspect of the present invention, in the portable terminal according to the fifth aspect, the focus determination means is an integrated value of the magnitude of the change in the brightness of the image in a predetermined image area due to the movement of the focus by the focus adjustment means. Is characterized in that it is determined that the focal points match at the focal point position at which is the largest.

That is, the invention according to claim 6 clarifies one method of focusing. It is free to focus in other ways.

According to a seventh aspect of the present invention, in the portable terminal according to the first or second aspect, there is provided an alignment determination means for determining that the alignment of the camera has been performed on the specific image, and this alignment. It is characterized in that it is provided with a positioning notification means for notifying that the positioning has been carried out by the judging means.

That is, according to the seventh aspect of the present invention, since means for aligning the camera with respect to a specific image such as a group photograph is prepared, a necessary image is missing even when the display cannot be seen well. Occurrences can be minimized.

According to an eighth aspect of the present invention, in the portable terminal according to the seventh aspect, the alignment discriminating means obtains a density difference calculating means for obtaining a density difference between two image areas divided at the central position of the image captured by the camera. And a registration completion judging means for judging that the positioning of the specific image is completed at the division position where the calculation result of the density difference calculating means becomes the minimum.

In other words, the invention according to claim 8 shows an example of the alignment determination means. In the case of a group photo or a self-portrait, the image often has a shape close to a symmetric shape as a whole, so the center position is determined using this characteristic. By utilizing the fact that there is a background other than the subject at both ends in the horizontal direction, it is possible to eliminate the necessary image loss.

[0031]

DETAILED DESCRIPTION OF THE INVENTION

[0032]

EXAMPLES The present invention will be described in detail below with reference to examples.

FIG. 1 shows the back side of a mobile phone as a mobile terminal in one embodiment of the present invention.
Shows the front side. Mobile phone 2 of this embodiment
In 01, a lens 202 of the camera is arranged near the upper end on the back side as shown in FIG. 1, and a relatively small second display 203 is arranged below the lens 202. Further, in the figure in which the antenna 204 is arranged, an incoming call lamp 20 that lights up when an incoming call arrives is provided at the upper right end opposite to the left end.
5 is incorporated. On the side of the mobile phone body 206, first to third key switches 207 ₁ for operating the camera are provided.
To 207 ₃ are arranged.

As shown in FIG. 2, a relatively large first display 2 is provided on the upper half of the front side of the mobile phone body 206.
11 is arranged, and a speaker 212 for a call is further arranged above it. First display 211
On the lower side, an operation unit 213 including various key switches and a microphone 214 for communication are arranged. In this way, the front surface side of the mobile phone main body 206 has substantially the same structure as a normal mobile phone.

FIG. 3 shows the main part of the circuit configuration of the mobile phone of this embodiment. The mobile phone 201 is equipped with a CPU (Central Processing Unit) 221 which is the center of various controls. The CPU 221 is connected to each unit of the device through a bus 222 such as a data bus. Of these, ROM
A read-only memory 223 stores a control program for performing various controls of the mobile phone. RAM
224 is a random memory as a work memory for storing data that is temporarily necessary for the control of the CPU 221.
Access memory. The operation unit 213 includes first to third
Of the key switch 207 ₁ to 207 ₃ are connected. The operation unit 213 has been described with reference to FIG.

The first display controller 225 controls the display of the first display 211. First
The display 211 of 1 displays the same as the display of a normal mobile phone. In addition, the mobile phone 2 of this embodiment
Since 01 has a built-in two-dimensional image sensor 226, the photographed image can be displayed. The second display controller 226 controls the second display 20.
The display control of No. 3 is performed. The second display 203 displays incidental information related to communication. For example, the presence or absence of an incoming call, the strength of the received radio wave, and the telephone number of the other party. Other information, such as time information or a registered schedule that is imminent, may be displayed. Further, when the two-dimensional image sensor 226 is driven, the output image is displayed alone or in combination with these information.

The camera driving section 228 drives the two-dimensional image sensor 226 and controls the driving of the first and second lens motors 229 ₁ and 229 ₂ . Camera drive unit 228, two-dimensional image sensor 22
6, the lens motor 229 and the lens 202 constitute a camera. The lens motor 229 is the first for focus control.
Lens motor 229 ₁ and a second lens motor 229 ₂ for rotating the photographing direction in the horizontal direction are prepared. The former first lens motor 229 ₁ is adapted to focus the camera. The second lens motor 229 ₂ of the latter is used in the horizontal alignment of the images. Therefore, when using a fixed focus type camera, the first lens motor 229 ₁ is unnecessary.

The lamp driving circuit 231 uses the incoming lamp 205.
Lighting control is performed. Communication controller 232
Is a circuit for communicating with a base station (not shown). The voice input / output circuit 233 is a circuit that drives the speaker 212 to output voice or sound, or input voice from the microphone (microphone) 214.

FIG. 4 shows an outline of control of the portable telephone of this embodiment. CP shown in FIG.
U monitors whether or not the camera photographing mode is set by the operation of the operation unit 213 (step S30).
1). When the camera photographing mode is not set (N), the mode as a normal mobile phone is executed (step S302). A description of this will be omitted.

When the camera photographing mode is set (step S301: Y), a message to that effect is displayed on the first display 211 and a message indicating that either the manual mode or the automatic mode should be selected is displayed. Done. At this stage, the user operates the operation unit 213 to select either the manual mode (step S303: Y), the automatic mode (step S304: Y), or the cancellation of the camera photographing mode itself (step S305: Y). Can be selected.

When the manual mode is selected (step S303: Y), the manual mode is executed (step S306). This will be described next.
When the automatic mode is selected (step S304: Y), the automatic mode is executed (step S307). This will be described later. When the camera shooting mode itself has been canceled (step S305: Y), the process is performed again from step S301 (return).

FIG. 5 shows the processing in the manual mode in step S306 of FIG. Here, the manual mode is a mode in which the mobile phone 201 side does not intervene in adjusting the focus and the position of the image, and the photographing is performed only by automatically controlling the exposure amount. When shooting is actually performed, a normal shooting mode in which a user shoots a normal subject, in which the user faces the mobile phone 201 in the arrangement state as shown in FIG.
There may be a self-portrait photographing mode in which the mobile phone 201 in the arrangement state as shown in FIG. In the normal shooting mode of the arrangement state shown in FIG. 2, the user can check the image taken by the lens 202 of the camera on the first display 211. Therefore, in this case, it is possible to operate the operation unit 213 to perform shooting. However, FIG.
In the self-portrait photographing mode in the arrangement state shown in (1), the operation unit 213 exists in a place where the user cannot see. Therefore, in this case, it becomes difficult to operate the operation unit 213 to perform photographing.

[0043] Therefore, the cellular phone 201 first to third key switch 207 ₁ to 207 ₃ to the aspect of this embodiment
Are arranged, and these are used when the camera shoots. The third key switch 207 ₃ of this functions as a shooting button. First and second key switch 20
7 ₁ and ₂₀ 7 ₂ have a role according to the situation.
In manual mode, these are used to zoom in and out on the camera image. It should be noted that the enlargement and reduction of the image may be performed optically by expanding and contracting the lens 202 as in the present embodiment, or may be performed by image processing. You may combine both of these.

In the manual mode, the CP shown in FIG.
U221 is the first to third key switch 207 ₁ to 207 ₃
Alternatively, it is waiting for one of the cancel keys of the operation unit 213 to be pressed (steps S321 to S32 in FIG. 5).
4). When the first key switch 207 ₁ is pressed (step S321: Y), control is performed to move the first lens motor 229 ₁ for focus only in the direction in which the image is enlarged by the lens 202. (Step S
325). On the other hand, the second key switch 207 ₂
If is pressed (step S322: Y), the control for moving the first lens motor 229 ₁ in the direction in which the image is reduced by the lens 202 is performed only during that time (step S326). If the third key switch 207 ₃ is pressed (step S323: Y), the camera driving unit 228 for fetching the photographed image at the time of the two-dimensional image sensor 226 (step S327).
That is, a still image is taken. During the third key switch 207 ₃ is pressed by the apparatus,
You may make it shoot a moving image.

Unlike the above, when the cancel key is pressed (step S324: Y), step S301 in FIG. 4 is executed.
The process returns to. That is, the manual mode and the camera photographing mode are canceled. Depending on the device, the process may return to step S303 (FIG. 4) to cancel only the manual mode.

FIG. 6 shows the processing in the automatic mode. Here, the automatic mode is a mode in which the mobile phone 201 side adjusts the focus and the position of the image to perform photographing. In this automatic mode, the CPU 221 monitors pressing of the first key switch 207 ₁ , the second key switch 207 ₂ and the cancel key (steps S341 to S34).
3). When the first key switch 207 ₁ is pressed (step S341: Y), it is possible to take a picture only by adjusting the focus. That is, focus adjustment work is performed (step S344), and when this work is completed (step S345: Y), a ready display indicating that preparation for photographing is completed is performed (step S346). In this embodiment, the incoming lamp 205 is used for the ready display. The incoming call lamp 205 lights up or blinks in a different form from the incoming call,
This indicates that the mobile phone 201 is ready for shooting. When the user in this state presses the third key switch 207 ₃ (step S347: Y), so that the photographing is performed (step S348).

FIG. 7 shows the processing principle of the focus adjustment shown in step S344. Now, it is assumed that an image of a person as shown in FIG. In this embodiment, one or a plurality of lines in the horizontal axis direction are defined in advance, and the steepness of changes in lightness and darkness (brightness) are compared at each focus position of the lens 202 (FIG. 1). In the figure, for one line L ₁ , changes in lightness and darkness in the horizontal axis direction are compared.

If the lens 202 is out of focus, the boundary between the dark portion of the person's hair and the whitish portion of the person's face becomes gentle. Therefore, the curve showing the change in shading becomes gentle as shown in FIG. 7 (b).
The figure (c) shows the state where the image is in focus, and the change in the density is steeper than the figure (b) at the positions indicated by the broken lines 141 and 142.

Therefore, one or more lines in the horizontal axis direction are set at a position relatively close to the center of the image,
When the position where the degree of change is the steepest is searched for in the place where the shade changes while moving the lens 202 in the enlargement direction or the reduction direction, the position becomes the focused position. Of course, since a wide-angle lens having a short focus is used in this type of apparatus, it is often possible to obtain an in-focus image without strict control of the focus.

Returning to FIG. 6, the description will be continued. The second key switch 207 ₂ with the user set to the automatic mode
When is pressed (step S342: Y), a mode for automatically adjusting the focus and the position of the image is set. At this time, first, the focus is adjusted (steps S349 and S350). Since this has been described in step S344 and step S345, the description thereof will be omitted.

When the focus adjustment is completed (step S35)
0: Y), and then image alignment is performed (step S351). This will be described next. When the position adjustment is completed (step S352: Y), step S
Proceeding to 346, the ready display is performed. Then, when the third key switch 207 ₃ is pressed (step S3
47: Y), the subject is photographed (step S348).

If the cancel key by the operation unit 213 is pressed instead of pressing the first key switch 207 ₁ or the second key switch 207 ₂ (step S343: Y), step S324 of FIG. The process returns to step S301 of FIG. 4 similarly to the process in FIG. That is, the automatic mode and the camera photographing mode are released. Step S30 depending on the device
The process may be returned to step 4 and only the automatic mode may be canceled.

FIG. 8 shows the principle of the image alignment shown in step S351 of FIG. However,
This alignment is mainly applied to things such as one's own still images and group photos, and is not for general subjects. (I), (ii) of FIG.
(Iii) shows three images 161 to 163 in which the position of the person (self-portrait) is slightly shifted in the horizontal direction. The image 162 in FIG. 11B is a case where a person is placed in the center position of the camera, and the image 1 in FIG.
Reference numeral 61 indicates the case where the person is displaced to the left side in the figure. The image 163 in FIG. 9 (iii) is the case where the person is displaced to the right in the figure. Horizontal direction (horizontal direction) for ease of explanation
Consider the case of scanning these images on line L ₂ of.
Further, at this time, it is assumed that the density of the hair portion 164 is the darkest (B), the face portion 165 is the brightest (W), and the background portion 166 has an intermediate brightness.

FIG. 7B shows the levels of these image signals when scanning is performed on the line L ₂ . Further, FIG. 7C is a diagram of the image signal obtained in FIG. 2B, in which the lightness of the right half portion is inverted.
In the same figure (d), the respective signal levels of the waveforms obtained by horizontally inverting these inverted signals around the center position of the respective horizontal axes are shown at the corresponding positions of the respective left-half waveforms shown in FIG. The signal level is subtracted from. The figure (e) shows the absolute value of each signal thus obtained.

When such a process is performed, the signal level becomes close to zero in the symmetrical density portion, and the signal level becomes high in the symmetrical density portion. Therefore, the integrated value of the waveform shown in FIG. 7E is taken, and the second lens motor 229 ₂ moves the lens 202 to a position where the integrated value is minimized.
The object is placed in the center of the image by swinging or setting the horizontal rotation position of the mobile phone 201.

FIG. 9 shows an example of the contents displayed on the second display when a group photo such as a commemorative photo of a class meeting or a wedding ceremony is taken. In such a group photo, even if the image is analyzed at a certain horizontal position due to the density of each person's kimono and the difference in the shade of the face, it is difficult to perform automatic alignment that allows the subject to fit in the horizontal direction. May be.

In such a case, in addition to the method of taking an absolute value as shown in FIG. 8 (e), the calculation is performed so that the weight of the starting end portion of these waveforms is heavier than the center position of the image. After that, integration is performed, and the process of setting the position having the minimum value as the position where the positions of the images in the left-right direction are aligned is effective. As a result, the positioning process that equalizes the amount of space in which the humans on the left and right peripheral portions do not exist is realized in a form in which the peripheral portions of the image are emphasized.

As is apparent from FIG. 9, in the normal photographing mode, the second display 2 is seen from the subject side.
You can see 03. Therefore, for example, even when the mobile phone 201 is fixed to a tripod and shooting is performed in the automatic mode, it is possible to confirm to some extent from the subject side whether or not the camera has correctly aligned the subject.

FIG. 10 shows an example of the display state of the second display when the user himself / herself takes his / her face. The user can adjust his / her position by looking at the second display 203 by himself / herself, and in principle, the alignment is unnecessary. However, if the positioning process described above is regarded as a method for setting the distribution ratio of the person and the background in the horizontal direction to an appropriate range, it can be used to automatically set the magnification with a camera equipped with a reduction ratio adjustment function. You can That is, the user is the mobile phone 2
In the case where the face is too close to 01 and only the face is captured, it is possible to perform automatic adjustment so that the background and the hair are arranged on both sides of the face in the wide-angle direction.

Of course, in the case of a simple mobile phone in which the second display 203 for directly confirming the self-portrait does not exist as in the present embodiment, the above-described alignment is effective. Further, in a predetermined case, the vertical or vertical alignment can be performed in the same manner.

First Modification

FIG. 11 shows a state in which an image is taken by a foldable mobile phone as a first modification of the present invention. This mobile phone 401 includes a first casing 40.
2 and the second housing 403 can be opened and closed by a hinge mechanism (not shown). The first display 40 having a relatively large size is provided on the folding side of the first housing 402.
4 is arranged, and an operation unit (not shown) is arranged on the surface of the second housing 403 facing the second housing 403. A lens (not shown) of the camera as shown in the previous embodiment is arranged on the surface of the first housing 402 opposite to the first display 404.

In such a mobile phone 401, if a photo is taken after the first casing 402 and the second casing 403 are opened, it may take a long time to miss the photo opportunity. Therefore, the second display 405 is arranged on the surface of the second housing 403 opposite to the above-mentioned operation portion, and a moving image or a still image can be taken while confirming the image even when the mobile phone 401 is closed. It is possible. In this modified example, the plurality of key switches 406 are arranged on the side portion of the second housing 403 so that the camera can be operated in the closed state and the open state similarly.

FIG. 12 shows a case of taking a picture of one's face with the mobile phone of the first modification. In this way, the first housing 402 and the second housing 403 may be opened, and the second display 405 and the lens 406 may be faced to the subject 407.

Second Modification

FIG. 13 shows a second modified example in which the second display and the camera lens are arranged on the same plane. In this figure, the same parts as those in FIG. 12 are designated by the same reference numerals. In the mobile phone 411 of this modification, the second display 405 and the lens 406 of the camera are used.
By arranging on the same plane, it is not necessary to open the first casing 402 and the second casing 403 when taking an image of oneself.
Although this point is convenient, there is a problem that the angle of view is difficult to determine when the image of another person is taken in the closed state. Of course, this problem does not occur if the first casing 402 and the second casing 403 are opened.

Although the embodiment has been described by taking a mobile phone as an example, it is needless to say that the present invention can be applied to other mobile terminals. Further, in the embodiment, the incoming lamp 205 indicates that the preparation for photographing is completed, but it is also possible to perform the same display with other lamps or display with sound.

[0068]

As described above, claims 1 to 7
According to the invention described, the first as a normal display
In addition to the above display, a second display was prepared. By arranging this so that the camera lens and the camera lens are located on the same plane, that image will be displayed on the second display when shooting your own face. Not only can it be displayed and confirmed, but other necessary information can be displayed on this second display. Therefore, it becomes possible to access necessary information without bothering to look at the first display, which not only saves time but also makes the size of the second display smaller and consumes less power. By devising such a method, the duration of the battery can be extended. Further, by making the second display face the other person when the other person is photographed by the camera, the person being photographed can confirm the image at the time of photographing.

Further, according to the invention described in claim 6, since means for aligning the camera with respect to a specific image such as a group photograph is prepared, necessary images are missing even when the display cannot be seen well. Occurrence of such a situation can be minimized.

[Brief description of drawings]

FIG. 1 is a perspective view showing a back side of a mobile phone as a mobile terminal in an embodiment of the present invention.

FIG. 2 is a perspective view showing the front side of the mobile phone of this embodiment.

FIG. 3 is a block diagram showing a main part of a circuit configuration of the mobile phone of the present embodiment.

FIG. 4 is a flowchart showing an outline of control of the mobile phone of the present embodiment.

FIG. 5 is a flowchart of processing in the manual mode shown in step S306.

FIG. 6 is a flowchart of processing in the automatic mode shown in step S307.

FIG. 7 is an explanatory diagram showing a processing principle of focus adjustment shown in step S344.

FIG. 8 is an explanatory diagram showing the principle of image alignment shown in step S351.

FIG. 9 is a plan view showing an example of display contents of the second display when a group photo is taken in the example.

FIG. 10 is a plan view showing an example of a display state of the second display when the user himself / herself captures his / her face in the embodiment.

FIG. 11 is a perspective view showing a state in which an image is taken by a folding mobile phone as a first modified example of the present invention.

FIG. 12 is an explanatory diagram showing a case of taking a picture of one's face with the mobile phone of the first modified example.

FIG. 13 is a perspective view of a mobile phone according to a second modification of the present invention.

FIG. 14 is a plan view showing a conventional mobile phone capable of confirming a shooting range when taking an image of oneself.

FIG. 15 is a plan view showing a first proposal of a conventional mobile phone capable of photographing while looking at one's face on a display.

FIG. 16 is a perspective view showing a second proposal of a conventional mobile phone capable of photographing while looking at one's face on a display.

[Explanation of symbols]

201, 401, 411, mobile phones 202,406 Camera lens 203, 405 Second display 205 incoming lamp 207 key switch 211, 404 First display 213 Operation unit 221 CPU 223 ROM 228 Camera driver 229 lens motor 402 First housing 403 Second housing

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04B 7/26 H04M 1/21 M H04M 1/00 1/725 G02B 7/11 H 1/21 D 1 / 725 H04B 7/26 MH04Q 7/32 VF term (reference) 2H051 AA00 BA47 GA03 GA04 GA13 2H102 AA33 AA45 AB11 BB01 CA01 5K023 AA07 BB11 DD08 HH06 MM00 MM25 5K027 AA11 BB02 FF01 A5253H02A07 BB25H0429 KK15 KK17

Claims (8)

[Claims] 1. A first display is arranged on a first surface as one surface of a housing having at least a communication circuit and an image processing circuit for processing a captured image, and the first display is opposite to the first surface. A mobile terminal characterized in that a camera for photographing the front of this surface and a second display for displaying an image photographed by this camera in a predetermined mode are arranged on the second surface on the side. 2. A first casing, a second casing arranged to be openable and closable with respect to the first casing via a hinge mechanism, and any one of the first and second casings. The lens of the camera attached to the surface on the side opposite to the closed side in one of the housings and the lens of the camera arranged on the surface on the closed side of the first housing are used. And a first display for displaying an image captured by the lens, and a surface of the first or second housing on which the lens of the camera is attached or when the first and second housings are closed. A second display which is arranged on a surface opposite to this surface in a housing different from the housing having a surface attached to display a picture taken by using the lens of the camera; 1st and 2nd case Mobile terminal characterized by comprising an image processing circuit for processing the communication circuit and captured images built in one of them. 3. The first display and the second display are arranged one by one on the front and back sides of a flat plate-like casing, and the first display has a size larger than that of the second display. The mobile terminal according to claim 1, wherein the mobile terminal is large. 4. The first display according to claim 1, wherein the second display displays incidental information related to communication, while displaying the image in a mode in which the camera is capturing an image. Mobile terminal. 5. A focus adjustment means for determining that the camera is in focus, a focus adjustment means for adjusting the focus when the camera is out of focus, and a focus adjustment means for adjusting the focus when the focus is determined. The mobile terminal according to claim 1 or 2, further comprising: an in-focus notification means for notifying. 6. The in-focus point determining means determines that the in-focus points match at a focus position where the integrated value of the magnitude of the change in brightness of the image in a predetermined image area accompanying the movement of the focus by the focus adjusting means becomes the largest. The mobile terminal according to claim 5, wherein: 7. A positioning determination means for determining that the positioning of the camera has been performed on a specific image, and a positioning for notifying that the positioning has been performed by the positioning determination means. The mobile terminal according to claim 1 or 2, further comprising a notification unit. 8. The position matching determining means obtains a density difference calculating means for calculating a density difference between two image regions divided at a central position of an image captured by a camera, and a calculation result of the density difference calculating means is minimized. The mobile terminal according to claim 7, further comprising a position alignment completion determination unit that determines that the alignment of the specific image is completed at the division position.