JP2004356975A - Portable terminal unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal unit capable of easily, safely executing horizontally wide angle photography and horizontally wide display. <P>SOLUTION: The portable terminal unit has an imaging display means comprising a compact camera and a vertically wide display screen and is vertically wide. Additionally, the portable terminal unit has a rotation connection means, where the camera and display screen of the imaging display means are simultaneously rotated by 90° for horizontal arrangement, and connection by a rotary shaft is performed. In this case, the center of the optical axis of the camera and the center of display coincide with the center of the rotary shaft, and a rotation stopper where the angle of the rotary shaft is fixed once when the rotary shaft is rotated by 90° is provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mobile terminal device having a camera, and more particularly, to a mobile terminal device having a function of rotating a camera imaging portion and a display screen portion in conjunction with each other.
[0002]
[Prior art]
Many mobile terminal devices such as mobile phones are equipped with a vertically long liquid crystal screen display section and an input operation section such as key buttons, etc. in a vertically long housing with a reduced width so that it can be operated with one hand. I have. Recently, the number of portable terminal devices equipped with a camera has increased, and the camera is provided with a housing for accommodating the camera at one of the front and back surfaces, at both the front and back surfaces, or at a hinge portion, and is provided with a camera orientation. In some cases, the subject can be rotated so that subjects on the front side and the back side of the mobile terminal can be photographed by one camera (for example, see Patent Document 1).
[0003]
As for the display screen of the portable terminal, for example, there is a method in which a horizontally long image is displayed horizontally by rotating a vertically long liquid crystal screen by 90 degrees (for example, see Patent Document 2).
[0004]
[Patent Document 1]
JP-A-11-69214 (FIG. 2)
[Patent Document 2]
JP 2001-156893 A (FIG. 2)
[0005]
[Problems to be solved by the invention]
However, in the above-described camera-equipped mobile terminal, in normal use, the imaging angle of the camera is vertically long, and the display portion of the liquid crystal screen that displays the image is also vertically long. I had to shoot at an angle. In this case, if the mobile terminal is tilted sideways with one hand and an operation input for shooting is performed, the grip becomes unstable, and there is a risk that the grip may be loosened accidentally during operation and the mobile terminal may be dropped. For this reason, it is desirable to be able to shoot a horizontally long angle by holding the mobile terminal in a portrait orientation without tilting it horizontally.
[0006]
For a display screen of a mobile terminal, for example, in a method of rotating a vertically long liquid crystal screen by 90 degrees to display a horizontally long image horizontally, a camera shooting angle and its display screen are considered in consideration of a mobile terminal with a camera. If the camera does not cooperate with the camera, there is a problem that the camera is not tilted even if the user tilts the display screen, which is very inconvenient for shooting.
[0007]
An object of the present invention is to provide a portable terminal device which can solve such a problem and can easily and safely perform landscape angle shooting and landscape display.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a portable terminal device of the present invention connects a first case having a camera, a rectangular display unit, a second case, and the first case and the second case. The display unit further includes a rotation unit that rotates integrally with the camera from the portrait to the landscape or vice versa.
[0009]
Further, the portable terminal device of the present invention is characterized in that a rotation axis of the rotation means is provided at a position where a center of an optical axis of a camera coincides with a center of the display unit.
[0010]
Furthermore, the rotation means is provided with a rotation stopper which once fixes the angle of the rotation axis when rotated from portrait to landscape.
[0011]
Further, the portable terminal device of the present invention is provided with a sensor for judging a portrait orientation and a landscape orientation in the rotating means. When the portable terminal device receives a landscape image and the sensor judges the landscape orientation, the landscape image is displayed. Is displayed on the horizontally elongated display unit.
[0012]
As described above, by configuring the camera and the display unit to be connected by the same rotation axis, the camera and the display screen can be simultaneously rotated, and the vertical angle and the horizontal angle of the camera shooting and the vertical and horizontal arrangement of the display screen can be achieved. Since the portable terminal can be used in conjunction with each other, it is possible to shoot a horizontally long angle by holding the portable terminal vertically without tilting it horizontally. In addition, the received landscape image can be displayed wider and larger by tilting the display unit horizontally.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a portable terminal device according to the present invention. FIG. 1 (a) shows a state of a normal use vertical arrangement, and FIG. 1 (b) shows a display of FIG. 1 (a). 5 shows a horizontal arrangement state in which the unit and the camera lens are rotated counterclockwise by 90 degrees.
[0014]
In FIG. 1A, (a1) is a front view, (a2) is a side view, and (a3) is a rear view. In FIG. 1B, (b1) is a front view, (b2) is a side view, and (b3) is a rear view. 1, 1 is an upper case, 2 is a lower case, 3 is a connecting portion, 4 is a display portion, 5 is an operating portion, 6 is a rotating shaft support portion, 7 is a rotating shaft, 8 is a lens housing, 9 Is a camera lens, 10 is a rotation stop, 11 is an operation button, 12 is an antenna, and 13 is a rotation reset button.
[0015]
The display section 4 of the liquid crystal screen fitted in the upper case 1 and the camera lens 9 fitted in the lens housing 8 are connected by the same rotating shaft 7. The center of the rotation axis 7 coincides with the center of the liquid crystal screen of the display unit 4 and the center of the optical axis of the camera lens 9.
[0016]
The upper case 1 including the display unit 4 and the lens housing 8 including the camera lens 9 are configured to be rotatable by the rotation shaft 7 on the basis of the rotation support unit 6. Further, the upper case 1 and the rotation supporting portion 6 can be closed and opened like a notebook with the lower case 2 by the connecting portion 3 of the hinge.
[0017]
The rotation stopper 10 is adapted to temporarily fix the rotation of the rotation shaft 7 when the rotation shaft 7 is rotated horizontally by 90 degrees from the normal vertical arrangement, and is fixed to the upper case 1 including the display unit 4 and the lens housing including the camera lens 9. 8 is fixed in a horizontal arrangement rotated 90 degrees from a normal vertical arrangement. In the horizontal arrangement, the antenna does not protrude from the display unit 4.
[0018]
The rotation reset button 13 is a button for releasing the rotation of the rotation stopper 10. The rotation shaft 7 fixed by the rotation stopper 10 is returned to the original normal vertical arrangement, and the upper case 1 including the display unit 4 and the camera lens 9 are moved. The included lens housing 8 is returned from the horizontal arrangement rotated by 90 degrees to the normal vertical arrangement.
[0019]
The lower case 2 includes an operation unit 5 for performing input operations such as telephone, e-mail, and camera photographing, and the lower case 2 includes a battery, a communication function, and an LSI for implementing functions of an operation input / output interface. Electronic devices are built-in. The upper case contains an LSI for processing a video signal from a liquid crystal driving device and an image sensor, a memory, and the like.
[0020]
The operation unit 5 includes operation buttons 11 such as numbers, characters, and execution of operations.
[0021]
The configuration for fixing and releasing the rotating shaft 7 will be described with reference to FIGS. FIG. 2 is a diagram illustrating a mechanism in which the camera lens and the display unit in FIG. 1 rotate at the same time, and FIG. 3 is a diagram illustrating a mechanism regarding rotation transition and rotation stop of the camera lens and the display unit. 1 and 13 in FIGS. 2 and 3 are the same as those in FIG.
[0022]
FIG. 2 (a1) is an enlarged view in which the components included in the rotation support section 6 on the back side of FIG. Similarly, FIG. 2A2 is an enlarged view of a cross section of a side surface of the display unit 4 and the lens housing 8 (including the camera lens 9) connected by the rotation shaft 7. 2 (b1) and FIG. 2 (c1) are cross-sectional views of FIG. 2 (a1) cut horizontally at the position of line H in FIG. 2 (a2). 2B is a cross-sectional view of the camera lens 9 and the display unit 4 in a normal vertical arrangement state, and FIG. 2C1 is a cross-sectional view of the camera lens 9 and the display unit 4 in a horizontal arrangement state rotated by 90 degrees.
[0023]
2 (b2) and 2 (c2) are cross-sectional views of FIG. 2 (b1) and FIG. 2 (c1), each of which is vertically cut at the position of the line I in the figure.
[0024]
In FIG. 2 (a2), 21 is a rotation axis return spring, 22 is a rotation retaining press bar, and 23 is a rotation reset button spring.
[0025]
The rotating shaft return spring 21 is a spring that attempts to return to the original position (here, a normal state of vertical arrangement) when the rotating shaft 7 is rotated by an external force. The rotation stop pressing bar 22 is a bar that presses down the rotation stop 10 when the rotation reset button 13 is pressed. When the rotation reset button 13 is pressed, the rotation reset button spring 23 is a spring that attempts to return to the original position before pressing the rotation reset button.
[0026]
In FIG. 2B1, reference numeral 24 denotes a rotation shaft projection. The rotation shaft protrusion 24 is a protrusion for limiting the rotation range of the rotation shaft 7. When the rotation protrusion 24 is at the position (b1), the camera lens 9 and the display unit 4 of the portable terminal are in a normal vertical arrangement state. It indicates that. In addition, when the rotation protrusion 24 moves to the position of FIG. 2C1 (the rotation shaft 7 rotates 90 degrees), it indicates that the camera lens 9 and the display unit 4 are in the horizontal arrangement state. At this time, the rotating shaft 7 attempts to return to the original vertical position by the return rotation spring 21, but the return rotation is stopped by the rotation stopper 10, and the rotation shaft 7 is fixed to the horizontal arrangement state rotated by 90 degrees.
[0027]
In FIG. 2B2, reference numeral 25 denotes a rotation stop rotation shaft, and reference numeral 26 denotes a rotation stop return spring. The rotation stop rotation shaft 25 is a rotation shaft for tilting the rotation stop 10, and is rotated in one direction from an upright normal state when pressed by another, and returns to an original upright state after being rotated. It is a retaining rotation axis. When the rotation stopper 10 is pressed by the rotation stopper holding bar 22 (here, downward), the rotation stopper return spring 26 attempts to return to the original position (here, above) before pressing the rotation stopper 10. It is.
[0028]
The upper part (b1), (c1), (d1), and (e1) of FIG. 3 are diagrams showing a state in which the upper case 1 including the display unit 4 and the lens housing 8 including the camera lens 9 are rotating. . FIG. 3 (b1) is a normal vertical arrangement state, FIG. 3 (c1) is in the middle of rotation from the vertical arrangement to the horizontal arrangement, FIG. 3 (d1) is a horizontal arrangement state rotated by 90 degrees, and FIG. e1) shows a state of returning from the horizontal arrangement to the original vertical arrangement.
[0029]
The middle tiers (b2), (c2), (d2), and (e2) in FIG. 3 are enlarged portions of the dashed-dotted line frame J in FIG. 3A, and the upper tiers (b1), (c1) in FIG. ), (D1), and (e1). 3 are enlarged views of the cross section taken along the dashed line K in FIG. 3, and similarly, the lower rows (b1), (c1), and (c1) of FIG. (D1) and (e1) are shown in correspondence with each other.
[0030]
When the upper case 1 including the display unit 4 and the lens housing 8 including the camera lens 9 are in a normal vertical arrangement as shown in FIG. 3 (b1), as shown in FIGS. 3 (b2) and 3 (b3). The rotation shaft 7 attempts to maintain the vertically arranged state (zero rotation angle) by the force of the return rotation spring 21.
[0031]
When the upper case 1 including the display unit 4 and the lens housing 8 including the camera lens 9 are in a state as shown in FIG. 3 (c1), as shown in FIG. 3 (c2) and FIG. The rotation shaft projection 24 touches the head of the rotation stopper 10, and at the same time, the rotation stopper 10 falls (rotates) around the rotation rotation shaft 25 of the rotation stopper 10, and the rotation shaft projection 24 passes through the rotation stopper 10. .
[0032]
In a state where the upper case 1 including the display unit 4 and the lens housing 8 including the camera lens 9 are rotated 90 degrees as shown in FIG. 3 (d1) and arranged horizontally, FIGS. 3 (d2) and 3 (d3). As shown, the rotation stopper 10 is returned to the original upright state by the return spring provided on the rotation stopper rotation shaft 25, and blocks the rotation shaft projection 24 from returning to the original vertical position. The rotating shaft 7 is temporarily fixed in a horizontal arrangement rotated by 90 degrees.
[0033]
When the upper case 1 including the display unit 4 and the lens housing 8 including the camera lens 9 are in a state as shown in FIG. 3 (e1), the rotation reset button 13 as shown in FIGS. 3 (e2) and 3 (e3). Is pressed, and at the same time, the rotation-stop pressing bar 22 is pressed, and the rotation-stop 10 is pressed down. As a result, the block of the rotation stopper 10 is released, and the rotation shaft projection 24 returns to the position of the normal vertical arrangement in FIG.
[0034]
Next, the operation in the above embodiment will be described. Now, it is assumed that the power is turned on with the upper case 1 and the lower case 2 open as shown in FIG. Suppose, for example, that a person is holding the portable terminal with one hand so as to hold the lower case 2 and intends to photograph an object on the other side facing the camera lens 9 of the portable terminal.
[0035]
First, when a subject is photographed in a normal vertical arrangement (vertical angle), the portable terminal is viewed from the subject, and the upper case 1 including the display unit 4 and the lens housing including the camera lens 9 are arranged as shown in FIG. The body 8 is in a vertically arranged state with respect to the rotary support 6.
[0036]
At this time, the rotation shaft projection 24 of the rotation shaft 7 connecting the display unit 4 and the camera lens 9 is in the state of FIGS. 2 (b1) and 3 (b3). In addition, the rotating shaft 7 is maintained in the vertically arranged state by the rotating shaft return spring 21 which always tries to return to the normal longitudinal arrangement. At that time, the rotation stopper 10 is in an upright state. In this normal vertical arrangement, a person can shoot a normal vertical angle image by pressing a shooting operation button on the operation unit 5.
[0037]
Next, in order to photograph the subject in a horizontal arrangement (horizontal angle), the person grasps the corner of the upper case 1 of the portable terminal with the other open hand and rotates it as shown in FIG. 3 (c1). FIG. 3 (c1) shows a rotational arrangement state between the normal vertical arrangement and the horizontal arrangement in which the upper case 1 is rotated by 90 degrees. This is a state in which the rotation stopper 10 is pressed by the rotation shaft projection 24 of the rotation shaft 7, as shown in FIG. 3 (c3). At this time, the rotation stopper 10 falls in the direction in which the rotation shaft 7 moves (rotates around the rotation stopper rotation shaft 25). After that, the rotating shaft 7 passes over the rotation stopper 10 and advances to the horizontal arrangement state rotated by 90 degrees.
[0038]
Further, when the upper case 1 is rotated by 90 degrees as shown in FIG. 3 (d1), the rotation shaft projection 24 of the rotation shaft 7 passes through the rotation stopper 10 and is in a horizontal arrangement state rotated by 90 degrees. In addition, the rotation stopper 10 that is tilted by the rotation shaft projection 24 (rotated around the rotation stopper rotation shaft 25) is provided with a return rotation spring that attempts to return to the original upright state as shown in FIG. 3D3. It returns to the original upright state by the rotation stop rotation shaft 25.
[0039]
At this time, the rotating shaft 7 tries to rotate to return to the normal vertical arrangement state by the rotating shaft return spring 21. However, due to the rotation stopper 10 that has already returned to the upright state (rotation in only one direction, rotation only clockwise in FIG. 3D3), the rotation shaft projection 24 of the rotation shaft 7 is moved to the position shown in FIGS. The rotation is blocked (clamped) as shown in ()). As a result, the display section 4 and the camera lens 9 cannot return to the original vertical arrangement state and maintain the horizontal arrangement state.
[0040]
When the upper case 1 is in the state as shown in FIG. 3 (d1), the display section 4 and the camera lens 9 of the portable terminal are horizontally arranged as shown in FIG. 1 (b). The person operating the mobile terminal presses the shooting button on the operation unit 5 while looking at the horizontal-angled subject on the display unit 4.
[0041]
After photographing the horizontal angle, when it is desired to return the display unit 4 and the camera lens 9 from the horizontal arrangement to the normal vertical arrangement (the upper case 1 is rotated from the horizontal arrangement to the normal vertical arrangement as shown in FIG. 3 (e1)). ), The rotation reset button 13 shown in FIG. 1 (a), FIG. 2 (a2) and FIG. 3 (e2) is pressed. When the rotation reset button 13 is pressed, the rotation-holding press bar 22 is pressed, and at the same time, the rotation-stop rotation shaft 25 that is in contact with the rotation-holding press bar 22 is pressed. As a result, the rotation stopper 10 is pushed (in FIG. 3 (e 3), sinks downward), the rotation shaft projection 24 passes through the rotation stopper 10, and the rotation shaft 7 returns to the original vertical arrangement state by the rotation shaft return spring 21. .
[0042]
When the rotation shaft projection 24 passes through the rotation stopper 10, the rotation stopper 10 returns to the original position (for example, FIG. 3B3) by the rotation stopper holding return spring 26. At substantially the same time, the rotation holding press bar 22 and the rotation reset button 13 return to their original positions (for example, FIG. 3 (b2)) by the rotation reset button spring 23.
[0043]
By the above-described series of operations, the display unit 4 and the camera lens 9 of the mobile terminal according to the present embodiment can be simultaneously switched to a vertical arrangement (vertical angle) or a horizontal arrangement (horizontal angle).
[0044]
After the camera function and the display function are selectively switched to a vertical angle or a horizontal angle in this way, when a person presses a shutter button for photographing a camera, incident light passing through the camera lens 9 is converted into an electric signal and is arranged vertically or horizontally. Is displayed on the display unit 4. The mechanism in this case will be briefly described with reference to FIG.
[0045]
In FIG. 4A, reference numerals 4 and 9 denote the display unit and the camera lens described above. Reference numeral 31 denotes a CCD or CMOS sensor that converts an optical signal into an electric signal. Reference numeral 32 denotes a signal control circuit that processes a signal converted into an electric signal as an image signal and outputs the signal to the display unit 4.
[0046]
(A2) of FIG. 4 shows a sub configuration of the signal control circuit 32. Reference numeral 41 denotes a signal processing circuit which arranges the electric signals from the sensor 31 as image signals and performs color conversion. Also, the image signal is resized (resolution converted) or trimmed. Reference numeral 42 denotes a memory for storing signals from the signal processing circuit 41. The stored signal is supplied to the signal processing circuit 41 and the display drive circuit 43. A display driving circuit 43 controls a signal output to the display unit 4.
[0047]
With the above configuration, the incident light that has passed through the camera lens 9 is converted into an electric signal by the sensor 31. The converted electric signal is supplied to a signal processing circuit 41, which performs processing such as signal alignment, color conversion processing, resizing, and trimming as an image signal. The processed signal is stored in the memory 42. The image signal stored in the memory 42 may be supplied to the signal processing circuit 41 for signal processing again. The signal stored in the memory 42 is supplied to the display drive circuit 43. The display driving circuit 43 controls the driving of the processed image signal in accordance with the scanning of the display unit 4 and outputs the image signal to the display unit 4. The display unit 4 receives a signal driven and controlled by the display drive circuit 43 and displays the signal on the display unit according to scanning.
[0048]
As described above, the camera function and the display function are simultaneously rotated and the vertical / horizontal angle / vertical / horizontal arrangement is matched, so that even when the vertical / horizontal switching is performed, as shown in (b1) and (b2) of FIG. And the scanning order of the display unit 4 on the display side is always the same, and there is no need to perform scan conversion. FIG. 4 (b1) shows an example of the display unit and the scanning order of the sensor in the case of the vertical arrangement display and the vertical angle, and FIG. 4 (b2) shows the display unit in the case of the horizontal arrangement display and the horizontal angle. And an example of the scanning order of the sensors. 4 (b1) and 4 (b2), the left figure shows the scanning of the display unit 4 and the right figure shows the scanning of the sensor 31.
[0049]
An image captured at a vertical angle or a horizontal angle is transmitted to another mobile terminal by a communication function of the mobile terminal. On the other hand, when an image transmitted from another transmitting side, particularly a horizontally long image is received, a configuration for displaying the received image will be briefly described with reference to FIG.
[0050]
FIG. 5A shows an image (still image or moving image) taken at a horizontally long angle. When the mobile terminal of the present invention receives the landscape image in the normal vertical arrangement ((a) in FIG. 1 or (b1) in FIG. 2), the image displayed on the vertical display unit 4 is as shown in FIG. (B2) or (b3) in FIG. Further, when the landscape image is received in the horizontal arrangement ((b) in FIG. 1 or (c1) in FIG. 2), the image displayed on the landscape display unit 4 is as shown in (c2) in FIG. indicate.
[0051]
In order to receive and display the horizontally long image in the vertical arrangement or the horizontal arrangement, as shown in (b1) of FIG. 5 and (c1) of FIG. 5, the rotation axis shown in (b1) and (c1) of FIG. 7 are provided with position sensors 51 and 52 that react when they contact the rotation shaft projection 24 at both ends of the rotation range. When the rotation shaft projection 24 comes into contact with the position sensors 51 and 52, a current is generated and a signal for distinguishing the respective positions is sent to the signal processing circuit 41 of the signal control circuit 32 in FIG.
[0052]
That is, when the rotation protrusion 24 contacts the position sensor 51 as shown in (b1) of FIG. 5, the position sensor 51 outputs to the signal processing circuit 41 a signal indicating that the display unit is in the vertical arrangement. The signal processing circuit 41 receives a landscape image (not shown) received by the portable terminal, determines the aspect ratio of the image in the vertical and horizontal directions, and determines that the image is a landscape image. The resized image that matches the horizontal width of the received image to the horizontal width of the display unit or the received horizontal image is trimmed as shown in (b3) of FIG. 5 to generate a double-ended image. These generated images are supplied to the display unit 4 via the memory 42 and the display drive circuit 43.
[0053]
On the other hand, when the rotation protrusion 24 comes into contact with the position sensor 52 as shown in (c1) of FIG. 5, the position sensor 52 outputs a signal indicating that the display unit is in the horizontal arrangement to the signal processing circuit 41. The signal processing circuit 41 receives a landscape image (not shown) received by the portable terminal, determines the vertical / horizontal aspect ratio of the image, and determines that the image is a landscape image. A resized image is generated to match the width of the received image to the width of the display unit. The generated image is supplied to the display unit 4 via the memory 42 and the display drive circuit 43.
[0054]
As described above, the display of the received image can be automatically switched by switching the arrangement of the display unit between portrait and landscape. In particular, when the received image is horizontally long, by switching the display unit to the horizontal arrangement, the optimum horizontal display can be automatically performed, and the received image can be displayed larger in a wider range.
[0055]
【The invention's effect】
As described above, according to the present invention, the camera and the display screen are simultaneously rotated by 90 degrees by providing the vertically long portable terminal device with the imaging / display means in which the small camera and the thin vertical display screen are connected by the rotation axis. Since the vertical and horizontal angles of camera shooting and the vertical and horizontal arrangement of the display screen can be used in conjunction with each other, it is possible to shoot safely without changing the portable terminal.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an embodiment of a portable terminal device according to the present invention. FIG. 2 is an enlarged view showing a configuration of a portion where a display unit and a camera lens rotate in the embodiment shown in FIG. FIG. 4 is an explanatory diagram illustrating a state in which the display unit and the camera lens are rotating in the embodiment illustrated in FIGS. 1 and 2; FIG. 4 is a diagram illustrating signal processing and scanning of the display unit in the portable terminal device according to the present invention; FIG. 5 is a diagram showing a display state of a display unit of the portable terminal device of the present invention.
DESCRIPTION OF SYMBOLS 1 Upper case 2 Lower case 3 Connecting part 4 Display part 5 Operation part 6 Rotation axis support part 7 Rotation axis 8 Lens housing 9 Camera lens 10 Rotation stop 11 Operation button 12 Antenna 13 Rotation reset button 21 Rotation axis return spring 22 Rotation axis Clamping bar 23 Rotation reset button spring 24 Rotation shaft projection 25 Rotation clamp rotation shaft 26 Rotation clamp return spring

Claims (4)

A first case having a camera and a rectangular display unit, a second case,
Rotating means for connecting the first case and the second case and rotating the display unit from portrait to landscape, or vice versa, integrally with the camera. . 2. The portable terminal device according to claim 1, wherein the rotation axis of the rotation unit is provided at a position where the center of the optical axis of the camera coincides with the center of the display unit. 3. The portable terminal device according to claim 1, wherein the rotation unit includes a rotation stopper that fixes an angle of a rotation axis once when the rotation unit rotates from portrait to landscape. When the rotation means is provided with a sensor for determining a portrait orientation and a landscape orientation, the portable terminal device receives a landscape image, and when the sensor determines the landscape orientation, the landscape image is displayed on the landscaped display unit. 4. The portable terminal device according to claim 1, further comprising a signal processing unit that performs the processing.

Images