JP2005260885A - Communication terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To widen a range of usage of a communication terminal device by providing a communication terminal device having a new camera function. <P>SOLUTION: In this cellular phone 1, first and second cases 3, 5 have camera units 17, 27, respectively. A distance measuring means can calculate the velocity to an object 10 to be photographed with two camera units 17, 27 according to the following formula (1). A first display panel 11 can display a measurement result by the velocity measuring means. Here, the formula (1) is V=ä(a<SB>2</SB>-a<SB>1</SB>)<SP>2</SP>+(b<SB>2</SB>-b<SB>1</SB>)<SP>2</SP>}^(1/2)/T, where V is the velocity of the object 10 for the cellular phone 1, a<SB>2</SB>is a position in a lateral direction of the object 10 after a time T elapses, a<SB>1</SB>is an initial position in a lateral direction of the object 10, b<SB>2</SB>is a position in forward and backward directions of the object 10 after the time T elapses, b<SB>1</SB>is initial forward and backward positions of the object 10, and T is the time of movement of the object 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a communication terminal device.

  In a communication terminal device such as a cellular phone, a foldable type in which two casings are connected so as to be freely opened and closed is known. In a foldable mobile phone, in general, a display panel is provided in one housing, an operation button is provided in the other housing, and the usage posture is such that the two housings are opened at a predetermined angle, Is configured to be able to adopt a closed standby posture (see, for example, Patent Document 1).

A conventional mobile phone has a camera function in addition to a telephone function and a mail function. A mobile phone having a camera function is usually provided with a camera unit composed of a lens, an image sensor, and the like on the back side of one housing, and an image photographed thereby is displayed on a display unit on the inner surface side. It has come to be.
JP 2003-333139 A

  In a conventional mobile phone with a camera function, a technique for improving the image quality of an image taken by a camera unit has been proposed, but a technique for a function using a camera unit body has not progressed much.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a communication terminal device having a novel camera function, thereby expanding the range of use of the communication terminal device.

A communication terminal device according to a first aspect includes a first casing, a second casing, a speed measuring unit, and a display unit. The first housing has a first camera unit. The second housing is movably connected to the first housing so as to adopt at least the first usage posture, and has a second camera portion disposed on the same side as the first camera portion in the first usage posture. The speed measuring means can calculate the speed of the subject photographed by the first and second camera units according to the following equation. The display unit can display the measurement result obtained by the speed measuring means.
[Equation 1]
V = {(a ₂ −a ₁ ) ² + (b ₂ −b ₁ ) ² } ^ (1/2) / T
(Where V is the speed of the subject with respect to the communication terminal device, a _{2 is} the position of the subject in the linear direction (hereinafter also referred to as the lateral direction) connecting the first camera portion and the second camera portion after the elapse of time T, and a ₁ : The initial lateral position of the subject, b ₂ : The position of the subject in a linear direction (hereinafter also referred to as the front-rear direction) perpendicular to the straight line connecting the first camera unit and the second camera unit after the elapse of time T, b ₁ : the subject The initial front-rear direction position of T, T: time required for the subject to move from the point (a ₁ , b ₁ ) to the point (a ₂ , b ₂ )
In this device, since the camera unit is provided in each of the two housings, it is possible to calculate the moving speed of the subject according to the above formula by performing camera shooting in the first usage posture. Therefore, here, the speed of the subject can be calculated by a simple calculation, and the speed of the subject is obtained by a method different from the conventional method of measuring the speed by the autofocus function of one camera unit, for example. Can do. Since the measurement result is displayed on the display unit, the user can easily know the moving speed of the subject.

In calculating the speed, b ₁ and b ₂ can be calculated as long as their values are known. Therefore, even if the values are calculated by using two camera units, The value measured by the autofocus function of the camera unit may be used and is not particularly limited.

Communication terminal device according to claim 2 is the communication terminal apparatus according to claim 1, speed measuring means may further calculated according to following equation b ₁ and b ₂ [Expression 1].
[Equation 2]
b _n = (d · tan θ ₁ · tan θ ₂ ) / (tan θ ₁ + tan θ ₂ )
(Where n is an integer of 1 or 2, d is a distance between the first camera unit and the second camera unit, θ ₁ is a straight line connecting the first camera unit and the second camera unit, and positions of the first camera unit and the subject. Θ ₂ : an angle formed between a straight line connecting the first camera unit and the second camera unit and a straight line connecting the position of the second camera unit and the subject)
Since this apparatus has two camera units, b _n required for the speed calculation can be easily calculated according to the above formula. Therefore, the distance to the subject is calculated in the process of calculating the speed, and more information about the subject can be known.

  According to a third aspect of the present invention, the communication terminal device according to the first or second aspect further includes a communication control unit for communication with the outside. The second housing is movable with respect to the first housing so as to further adopt a second usage posture different from the first usage posture. And operation control by a communication control part is performed in the 2nd use posture.

  In this device, different controls such as speed measurement or communication are performed for each posture taken by the two housings. Therefore, the user can easily switch the control state by changing the posture of use of the device, and is easy to use. Become.

  According to a fourth aspect of the present invention, there is provided the communication terminal device according to the third aspect, wherein the first and second housings are foldably connected so as to be pivotable and opened in a first angle with a first use posture. When the second angle is opened, the second usage posture is set.

  In this device, specifically, in a foldable device, the control state can be switched by changing the opening and closing angles of the two housings to adopt different postures.

  A communication terminal device according to a fifth aspect of the present invention is the device according to any one of the first to fourth aspects, further comprising a focus setting unit that sets a focal point in accordance with the speed measured by the speed measurement unit. The display unit can display an instruction button for accepting an input operation from the outside and instructing the focus setting means to set the focus.

  In this device, the focus is set according to the measured speed of the subject. Here, the focus setting can be instructed by performing an input operation on the instruction button displayed on the display unit. It has become.

  A communication terminal device according to a sixth aspect is the device according to any one of the first to fifth aspects, wherein one of the camera units can perform photographing with an autofocus function. The speed measuring means can further measure the speed of the subject photographed by one camera unit, and the speed of the subject photographed by the two camera units and the speed of the subject photographed by the one camera unit. The average value can be calculated.

  Since this apparatus can calculate the average value of the subject speeds obtained in two ways, more reliable information about the subject speed can be obtained.

  A communication terminal device according to a seventh aspect of the present invention is the device according to any one of the first to sixth aspects, wherein one of the camera units is capable of photographing with an autofocus function. The speed measuring means can further measure the distance to the subject photographed by one camera unit, and the distance to the subject photographed by the two camera units and the subject photographed by one camera unit. An average value with the distance can be further calculated.

  With this device, the average value of the distance to the subject obtained in two ways can be calculated, so that more reliable information about the distance to the subject can be obtained.

  According to the present invention, since the camera units are provided in each of the two housings, it is possible to calculate the moving speed of the subject according to the above equation by performing camera shooting in the first usage posture. Therefore, here, the speed of the subject can be calculated by a simple calculation, and the speed of the subject is obtained by a method different from the conventional method of measuring the speed by the autofocus function of one camera unit, for example. Can do. Since the measurement result is displayed on the display unit, the user can easily know the moving speed of the subject.

[Configuration of mobile phone]
1 to 3 show a mobile phone 1 in which an embodiment of the present invention is adopted.

  The mobile phone 1 is a folding type that can be opened and closed between a use posture and a standby posture, and includes a first housing 3 and a second housing 5.

<First housing>
The first housing 3 has a thin rectangular parallelepiped shape, and includes a first display panel 11 and a speaker portion 13 provided on the inner surface side, and a connection portion 15 provided at an end portion on the second housing 5 side. The first camera unit 17 is provided on the back side, and the jog dials 19 and 20 are provided on the side and end portions, respectively.

  The first display panel 11 is composed of a liquid crystal display, and predetermined display contents are displayed by the control unit 7 (described later). The speaker unit 13 is generated by converting an electrical signal from the other party during a call into voice information. The connection portion 15 is a portion that is attached to the second housing 5. The first camera unit 17 is configured by a lens, an image sensor, and the like (not shown), and can display image information captured from the outside on the display panels 11 and 21 via the control unit 7. The first camera unit 17 has an autofocus function. The jog dials 19 and 20 are used to move a pointer 33 (see FIG. 6) displayed on the first display panel 11 in the vertical and horizontal directions in a speed measurement mode described later.

<Second housing>
The second housing 5 has a thin rectangular parallelepiped shape, and includes a second display panel 21 and a microphone portion 23 provided on the inner surface side, and a connection portion 25 provided at an end portion on the first housing 3 side. A second camera portion 27 provided on the back side, an operation button 28 provided on the side portion (see FIG. 6), and jog dials 29 and 30 (see FIG. 6) provided on the side portion and the end portion, respectively. have.

  The second display panel 21 is configured by a touch panel type liquid crystal display, and predetermined display contents are displayed by the control unit 7. The microphone unit 23 converts voice information such as a user's voice into an electrical signal to be sent to the other party.

  The connecting portion 25, together with the connecting portion 15 of the first housing 3, constitutes a hinge that allows the first housing 3 and the second housing 5 to turn freely. A standby posture in which the inner surfaces are opposed to each other and a use posture in which the first and second housings 3 and 5 are opened (see FIGS. 2 and 3) can be adopted. The usage posture includes the first usage posture shown in FIG. 2 and the second usage posture shown in FIG. The first housing 3 and the second housing 5 are opened at an angle of 165 ° in the second usage posture, and are opened at an angle of 180 ° in the first usage posture. A sensor 26 for detecting the relative angle between the first and second housings 3 and 5 is disposed between the two connection portions 15 and 25.

  The second camera unit 27 is the same as the first camera unit 17. The operation button 28 is for releasing the shutter and instructing the speed measurement operation by the control unit 7 in the speed measurement mode. When the shutter is first released, the initial position of the subject 10 is determined, and further after the time T has elapsed. When the shutter is released, the position of the subject 10 after movement is fixed. The jog dials 29 and 30 are for moving a pointer 35 (see FIG. 6), which will be described later, displayed on the second display panel 21 in the speed measurement mode, up and down and left and right.

<Control unit>
A control unit 7 is arranged inside these two casings 3 and 5.

  The control unit 7 is constituted by a microcomputer including a CPU and a memory, determines which use posture is in accordance with the angle detected by the sensor 26, performs control in the normal mode in the second use posture, In one use posture, control is performed in the speed measurement mode. The memory stores a control program executed in each mode. The control program in the normal mode includes a program related to communication with another mobile phone or the like. The control program in the speed measurement mode includes a program related to the measurement of the moving speed of the subject and the setting of the focus.

  The memory stores data in which the position on the screen of the pointers 33 and 35 displayed on the display panels 11 and 21 in the speed measurement mode is associated with the angle θ with respect to the subject 10. The angle θ can be grasped based on the positions 33 and 35 positioned on each screen. Further, in the memory, the value of the distance d to the first camera unit 17 in the first use posture is stored as data, and data relating to the distance to the subject 10 measured in the past can be held.

  In the normal mode, calls and e-mails can be sent and received, and shooting in the same camera mode as before can be performed. In the normal mode, the first display panel 11 displays a standby screen including a clock display or the like, and a captured image in the normal camera mode, and the second display panel 21 displays an operation screen 22. It is like that. Various buttons such as a numeric keypad for accepting a user input operation are displayed on the operation screen 22 so that the same operation as that of a conventional mobile phone operation button can be performed. In addition, the autofocus function of the first and second camera units 17 and 27 can measure the distance and speed according to a known method based only on the images taken by the camera units 17 and 27. Then, it is possible to calculate an average value of the distance and speed thus measured and the distance and speed to the same subject 10 obtained in the speed measurement mode.

On the other hand, in the speed measurement mode, images taken by the camera unit 17 are displayed on the first and second display panels 11 and 21, respectively, and pointers 33 and 35 are displayed on the panels 11 and 21, respectively. The pointers 33 and 35 can be moved to arbitrary positions by the jog dials 19 and 20 or 29 and 30 of the bodies 3 and 5. When the operation button 28 is pressed, the angles θ ₁ and θ ₂ are determined from the positions of the pointers 33 and 35 on the screen, and the moving speed of the subject 10 is calculated according to the following equation. A conceptual diagram of such speed measurement is shown in FIGS.
[Equation 3]
V = {(a ₂ −a ₁ ) ² + (b ₂ −b ₁ ) ² } ^ (1/2) / T
(Where V: speed of the subject 10 with respect to the mobile phone 1, a ₂ : lateral position of the subject 10 after the elapse of time T, a ₁ : initial lateral direction position of the subject 10, b ₂ : after elapse of time T The position of the subject 10 in the front-rear direction, b ₁ : The initial position of the subject 10 in the front-rear direction, T: the time required for the subject 10 to move from the point (a ₁ , b ₁ ) to the point (a ₂ , b ₂ )
As shown in FIGS. 4 and 5, the positions a and b are expressed with reference to the position of the first camera unit 17, and each value is a distance in the horizontal direction and the front-rear direction from the first camera unit 17. Respectively.

Here, a ₁ and a ₂ are expressions that hold for the distance to the subject 10:
[Equation 4]
a _n · tan θ ₁ = (d−a _n ) · tan θ ₂
(Where n is an integer of 1 or 2, θ ₁ is an angle formed by a straight line connecting the first camera unit 17 and the second camera unit 27 and a straight line connecting the positions of the first camera unit 17 and the subject 10, θ _2. : An angle formed by a straight line connecting the first camera unit 17 and the second camera unit 27 and a straight line connecting the positions of the second camera unit 27 and the subject 10)
Is obtained.

In addition, b ₁ is represented by the formula:
[Equation 5]
b ₁ = (d · tan θ ₁₁ · tan θ ₂₁ ) / (tan θ ₁₁ + tan θ ₂₁ )
(Here, θ ₁₁ : an angle formed by a straight line connecting the first camera unit 17 and the second camera unit 27 and a straight line connecting the initial positions of the first camera unit 17 and the subject 10, θ ₂₁ : the first camera unit 17 and (An angle formed by a straight line connecting the second camera unit 27 and a straight line connecting the initial positions of the second camera unit 27 and the subject 10)
Is obtained.

Further, b ₂ is represented by the formula:
[Equation 6]
b ₂ = (d · tan θ ₂₁ · tan θ ₂₂ ) / (tan θ ₁₂ + tan θ ₂₂ )
(Here, θ ₁₂ is an angle formed by a straight line connecting the first camera unit 17 and the second camera unit 27 and a straight line connecting the first camera unit 17 and the position of the subject 10 after the elapse of time T, θ ₂₂ : first. (An angle formed by a straight line connecting the camera unit 17 and the second camera unit 27 and a straight line connecting the second camera unit 27 and the position of the subject 10 after time T))
Is obtained.

When the measurement is completed in the speed measurement mode, the value V is displayed on the first display panel 11 as the moving speed of the subject 10 and the distance before and after the movement from the mobile phone 1 to the subject 10 is the distance. b ₁ and b ₂ are displayed. In addition to these displays, an instruction button 24 (see FIG. 2) for instructing a focus setting operation is displayed, and the focus is determined according to a known method according to the speed and distance calculated by pressing this button.

  Note that the control unit 7 can perform control related to notification of incoming calls and mails, a clock, a timer, and the like even in a standby posture. Moreover, it has a timer function, and can grasp the time during which the shutter is pressed twice.

[Operation of mobile phone]
Next, an example of the operation of the mobile phone 1 will be described.

  In the cellular phone 1, when using the telephone, mail function, etc., the first casing 3 and the second casing 5 are opened to the second usage posture. Then, the control in the normal mode is performed, and the telephone, mail function, and the same camera function as the conventional one can be used. At this time, the operation screen 22 is displayed on the second display panel 21, and the user can input the telephone number of the other party, create a mail, or measure the distance and speed by the autofocus function. . The measured distance and speed are displayed on the first display panel 11 and can be held in the memory.

On the other hand, when using the speed measurement mode, the first and second housings 3 and 5 are further opened from the second usage posture to the first usage posture. Then, it switches to speed measurement mode, the image image | photographed with the camera part 17 is each displayed on the 1st and 2nd display panel 21, and the pointers 33 and 35 are displayed. Then, when the jog dials 19, 20, 29, and 30 are operated so that the pointers 33 and 35 are aligned with the subject 10 on each screen and the operation button 28 is pressed to release the first shutter, the two angles θ ₁₁ and θ _{21 are obtained.} Is determined, the value of the distance d between the two camera units 17 and 27 is called, and the distance b ₁ to the subject 10 is calculated according to the above equation. The calculation result is displayed on the first display panel 11. When the operation button 28 is further pressed to release the shutter for the second time, the two angles θ ₁₂ and θ ₂₂ are determined, b ₂ is calculated in the same manner as b _1, and the calculation result is displayed on the first display panel 11. Is done.

The distances b ₁ and b ₂ obtained here can be stored in the memory, and an instruction button 24 is displayed on the first display panel 11, and a focus corresponding to the speed V is determined by pressing this button.

  When the second use posture is again set to the normal mode, the average values of the distance and speed previously obtained in the normal mode and the distance and speed obtained in the speed measurement mode can be respectively calculated. The calculation result here is also displayed on the first display panel 11 and can be held in the memory.

According to the mobile phone 1 described above, since the camera units 17 and 27 are provided in the two casings 3 and 5, respectively, the speed of the subject 10 can be calculated according to the above formula. Therefore, here, the speed of the subject 10 can be calculated by a simple calculation, and the speed of the subject is obtained by a method different from the conventional method of measuring the speed by the autofocus function of one camera unit, for example. be able to. Since the measurement result is displayed on the display panel, the user can easily know the speed of the subject 10.
[Other Embodiments]
(A) When calculating the velocity V of the subject 10 in the velocity measurement mode, it was measured by the autofocus function of one camera unit instead of b1 and b2 obtained by [Equation 5] and [Equation 6]. The distance to the subject may be used.

  (B) The mobile phone may be configured to take three or more types of usage postures and perform different control for each usage posture. Moreover, the angle of each use posture is not limited to what was demonstrated in the said embodiment.

  (C) In the speed measurement mode described above, instead of the configuration in which the pointer is moved to match the subject, for example, a mark is fixedly displayed at the center of each panel, and when the jog dial is operated, the image itself displayed on the panel moves. It is possible to adopt other means such as the above and aligning the subject with the mark.

  (D) The mobile phone is not limited to a foldable type, but may be a revolver type or a composite type of these.

  (E) The present invention can be applied to any communication terminal device having two housings that can take two or more postures. In addition to a mobile phone, a PDA (personal digital assistant), a mobile computer, etc. It can also be applied to other communication terminal devices.

The block diagram which shows typically the structure of the mobile telephone by which one Embodiment of this invention was employ | adopted. The perspective view which shows the said mobile telephone in a 1st use attitude | position. The perspective view which shows the said mobile telephone in a 2nd use attitude | position. FIG. 3 is a top view conceptually showing a speed measurement operation by the mobile phone. FIG. 3 is a top view conceptually showing an operation for measuring the individuality by the mobile phone. The top view which shows the mobile telephone of FIG. The rear view which shows the mobile telephone of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile telephone 3 1st housing | casing 5 2nd housing | casing 7 Control part 11 1st display panel 21 2nd display panel

Claims (7)

A first housing having a first camera section;
A second housing that is movably coupled to the first housing so as to adopt at least a first usage posture and has a second camera portion disposed on the same side as the first camera portion in the first usage posture. When,
Speed measuring means capable of calculating the speed of a subject photographed by the first and second camera units according to the following equation;
A display unit capable of displaying a measurement result by the speed measuring means;
Communication terminal equipment equipped with.
[Equation 1]
V = {(a ₂ −a ₁ ) ² + (b ₂ −b ₁ ) ² } ^ (1/2) / T
(Where V is the speed of the subject with respect to the communication terminal device, a _{2 is} the position of the subject in the linear direction connecting the first camera unit and the second camera unit after the elapse of time T, and a _{1 is} the first camera unit and the second camera. B ₂ : position of a subject in a linear direction perpendicular to a straight line connecting the first camera unit and the second camera unit after elapse of time T, b ₁ : first camera unit and The initial position of the subject in a linear direction orthogonal to the straight line connecting the second camera section, T: time required for the subject to move from the point (a ₁ , b ₁ ) to the point (a ₂ , b ₂ ) _2. The communication terminal device according to claim 1, wherein the speed measuring unit can further calculate b ₁ and b ₂ of the [Equation 1] according to the following expression.
[Equation 2]
b _n = (d · tan θ ₁ · tan θ ₂ ) / (tan θ ₁ + tan θ ₂ )
(Where n is an integer of 1 or 2, d is the distance between the first camera unit and the second camera unit, θ ₁ is a straight line connecting the first camera unit and the second camera unit, the first camera unit and the subject. Θ ₂ : Angle formed by a straight line connecting the first camera unit and the second camera unit and a straight line connecting the second camera unit and the subject) A communication control unit for communication with the outside;
The second housing is movable relative to the first housing to further adopt a second usage posture different from the first usage posture;
Operation control by the communication control unit is performed in the second usage posture.
The communication terminal device according to claim 1 or 2.   The first and second casings are foldably connected so as to be foldable, are in the first use posture when opened by a first angle, and are opened by the second angle when the second use is opened. The communication terminal device according to claim 3, which is in a posture. A focus setting means for setting a focus according to the speed measured by the speed measuring means;
The display unit is capable of displaying an instruction button for receiving an input operation from outside and instructing the focus setting unit to set a focus.
The communication terminal device according to any one of claims 1 to 4. One camera part can shoot with autofocus function,
The speed measuring unit can further measure the speed of the subject photographed by the one camera unit and is photographed by the speed of the subject photographed by the two camera units and the one camera unit. The average value with the subject's speed can be calculated.
The communication terminal device according to any one of claims 1 to 5. One camera part can shoot with autofocus function,
The speed measuring unit can further measure the distance to the subject photographed by the one camera unit, and the distance to the subject photographed by two camera units and the one camera unit. It is possible to further calculate the average value with the distance of the subject to be
The communication terminal device according to any one of claims 1 to 6.

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