JP2005012297A - Field angle changing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To protect privacy when a portable terminal is carried, and to provide a usage environment suitable for each of cases where the portable terminal is carried and it is left on a desk, in the portable terminal. <P>SOLUTION: The portable terminal provided with a display means for displaying at least one or more information has an at least state detecting means for detecting a state of the portable terminal as a physical quantity; and a field angle changing means for changing a field angel of the display means corresponding to the state detection of the state detecting means; or a display control means for controlling a optical amount of the display means or an at least sound output means for outputting a ring tone, an operation sound or voice; or a display font changing means for changing a character font of the display means; or a vibrating means for vibrating the device for notifying a user of the information. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable terminal that performs information processing or communication, and relates to a portable terminal that includes an operation unit and a display screen.
[0002]
[Prior art]
In recent portable terminals that perform information or communication, the size of the display screen is increasing. In addition, the viewing angle of display screens is increasing with the spread of flat CRTs and liquid crystal display devices with an increased viewing angle. In addition, display screens capable of color display are widespread.
[0003]
In addition, mobile phones and PHS equipped with a sound output capable of changing the type and volume of a ringtone or having a ringing vibration are in widespread use.
[0004]
It has also been proposed to manually switch the viewing angle of the display (Japanese Patent Laid-Open No. 9-288280).
[0005]
[Problems to be solved by the invention]
However, with the increase in the size of the display screen, the expansion of the viewing angle, and the spread of the color display screen, it becomes easier for those who are located around the user of the mobile terminal to visually recognize the display screen of the mobile terminal. . When it is easy for a person around the user of the mobile terminal to view the display screen of the mobile terminal, it is difficult to perform highly confidential information processing or communication on the mobile terminal, and it is difficult to protect privacy. became.
[0006]
In addition, with the widespread use of mobile phones and PHS equipped with sound output and incoming vibration, ringtones are regulated in some facilities, and it becomes necessary to switch sound output to ON / OFF. . However, manual sound output ON / OFF switching is troublesome and cumbersome.
[0007]
The present invention has been made in view of such circumstances, and in a mobile terminal, protects privacy when the mobile phone is held, and provides a use environment suitable for each of the mobile phone and when left on the desk. With the goal.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided at least one situation detection unit that detects a situation of a mobile terminal as a physical quantity, and a viewing angle change that changes a viewing angle of the display unit according to a situation detection result of the situation detection unit. And a portable terminal having the means.
[0009]
According to a second aspect of the present invention, at least one status detection unit that detects the status of the mobile terminal as a physical quantity, and controls the amount of light and color of the display unit according to the status detection result of the status detection unit. A portable terminal having display control means is provided.
[0010]
According to a third aspect of the present invention, there is provided at least one status detecting means for detecting a status of a mobile terminal as a physical quantity, and a ringing tone or voice for communication / call, an operation tone for operation, and music. There is provided a portable terminal having at least one sound output means and a sound control means for controlling the type or volume of the sound output means in accordance with the situation detection result of the situation detection means.
[0011]
According to a fourth aspect of the present invention, there is provided at least one situation detecting means for detecting the situation of the portable terminal as a physical quantity, and a character font displayed on the display means in accordance with the situation detection result of the situation detecting means. There is provided a portable device having display font changing means for changing the type or size of the display font.
[0012]
According to a fifth aspect of the present invention, there is provided at least one status detecting means for detecting the status of the mobile terminal as a physical quantity, and vibration for vibrating the apparatus to inform the user of information related to communication / call or operation. And a vibration control unit that controls the vibration unit according to the state detection unit of the state detection unit.
[0013]
Here, in the first to fifth inventions according to the present invention, as the state detection means for detecting the state of the mobile terminal as a physical quantity, an optical sensor is provided on one or both of the front surface and the back surface of the mobile terminal, The status of the mobile terminal is detected based on the response of the optical sensor.
[0014]
In addition, as the situation detecting means, an infrared light emitting device and an infrared sensor are provided on one or both of the front surface and the back surface of the portable terminal, and the portable terminal is based on the response of the infrared sensor to the infrared light emitted from the infrared light emitting device. The situation may be detected.
[0015]
Further, as the situation detection means, an imaging device may be provided on one or both of the front surface and the back surface of the portable terminal, and the situation of the portable terminal may be detected based on a temporal change of an image obtained from the imaging device. .
[0016]
Moreover, an angular velocity sensor may be provided as the situation detection means, and the situation of the portable terminal may be detected based on the rotation situation of the portable terminal obtained from the angular velocity sensor.
[0017]
In addition, an acceleration sensor may be provided as the situation detection unit, and the situation of the portable terminal may be detected based on the vibration situation of the portable terminal obtained from the acceleration sensor.
[0018]
Further, in the first invention according to the present invention, as the viewing angle changing means for changing the viewing angle of the display means according to the situation detection result of the situation detecting means, a lens is provided on the front surface of the display means, The viewing angle is controlled by the imaging range of the lens that changes depending on the position of the lens.
[0019]
Further, as the viewing angle control means, a light-emitting body having higher illuminance than the display means is provided around the display means, and the display means cannot be visually recognized due to glare while the light-emitting body emits light. good.
[0020]
In addition, in order to prevent the user himself / herself from seeing the display means due to the light emission of the light emitter, a light shielding object is provided on the display means side of the light emitter, and the light emitter emits light from the vertically upward direction of the display means. May not be visible.
[0021]
Further, the light emitter may be incorporated in the portable terminal so that it can be used at any time, and the light emitter can be used only when necessary to improve the portability of the portable terminal. May be removable from the portable terminal.
[0022]
Further, as the viewing angle control means, as disclosed in JP-A-9-288280, the viewing angle of the display means can be changed by providing a filter capable of controlling the refractive index of the optical path in front of the display means. good.
[0023]
Further, as the viewing angle control means, as disclosed in JP-A-9-105907, the viewing angle of the display means can be changed by controlling the orientation of the viewing angle adjusting liquid crystal molecules and the dichroic dye molecules. Also good.
[0024]
Further, as the viewing angle control means, as disclosed in JP-A-6-59287, the viewing angle of the display means may be changed by varying the degree of light scattering in the optical element.
[0025]
Further, as the viewing angle control means, as disclosed in JP-A-9-138393, a lens is provided on the front surface of the display means, and a pressure application element is provided around the lens, and the lens is formed by the pressure application element. The lens curvature may be changed by applying a bending stress to the display means to change the viewing angle of the display means.
[0026]
Further, in the first invention according to the present invention, as the display control means for controlling the light quantity and color development of the display means, the light quantity of the display screen is reduced or eliminated according to the detection result of the situation detection means, and it is easy. Make the display means invisible.
[0027]
Further, as the display control means, the hue of the display screen is limited to a specific range according to the detection result of the situation detection means, so that the display means may not be easily visible.
[0028]
Further, as the display control means, the display means can be made invisible easily by extremely increasing or decreasing the saturation of the display screen according to the detection result of the situation detection means. Good.
[0029]
Further, in the fifth invention according to the present invention, as the vibration control means for controlling the vibration means, the size of the vibration means is increased / decreased, the vibration pattern is changed or vibration is performed according to the detection result of the situation detection means. By stopping, for example, when the mobile terminal is left on a desk, noise due to vibration of the mobile terminal may be reduced.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on illustrated embodiments.
[0031]
(First embodiment)
FIG. 1 is a conceptual diagram of a portable terminal 100 according to an embodiment of the present invention.
[0032]
The mobile terminal 100 detects a ringing sound or voice for communication / call, an operation sound for operation, speakers 101 and 107 for emitting music, a display screen 102 for displaying information, and a status of the mobile terminal 100. An optical sensor 103, an operation unit 104, and a microphone 105 for calling are provided.
[0033]
FIG. 2 is a block diagram showing the display means and detection means provided in the portable terminal 100 according to the embodiment of the present invention, assuming the structure having the display means and operation means shown in FIG. Yes. The mobile terminal 100 includes a sensor unit 111 for detecting the status of the mobile terminal 100, a microcomputer 110 for calculating various information, and an operation unit 126 for inputting information. The sensor unit 111 is provided with an optical sensor 112, and detects the amount of light on the side surface on which the sensor unit 111 is provided. The microcomputer 110 receives a detection signal from the sensor unit 111, performs information processing based on an input from the operation unit 126, and controls the viewing angle changing unit 118. When the microcomputer 110 detects a predetermined reaction from the sensor unit 111, the viewing angle of the display screen 102 is changed using the viewing angle changing means 118. In the second embodiment to the fifth embodiment, which will be described later, the image sensor 115, the angular velocity sensor 116, the acceleration sensor 117, the infrared light emitting device 113, and the infrared sensor 114 are used as the sensor unit 111.
[0034]
FIG. 3 is a conceptual diagram of the optical sensor 112. The optical sensor is assumed to be a photodiode, and includes a light receiving portion 301 made of a diode, an outer wall 302 made of a light shielding material, and a connection terminal 303 for connecting the light receiving portion 301 and the microcomputer 110. A voltage or current is generated at the connection terminal 303 based on the amount of light incident on the light receiving unit 301.
[0035]
JP-A-9-105907, JP-A-6-59287, and JP-A-9-288280 disclose viewing angle changing techniques applicable to the viewing angle changing means 118.
[0036]
FIG. 4 is a conceptual diagram of the viewing angle changing means disclosed in Japanese Patent Laid-Open No. 9-105907. In the technique disclosed in Japanese Patent Laid-Open No. 9-105907, the degree of light scattering from the backlight unit 403 to the liquid crystal display panel 401 is controlled by the optical element 402. FIG. 4A shows a state in which the drive voltage to the optical element 402 is set to a predetermined value and there is no light scattering. In this case, the light from the backlight unit 300 passes through the optical element 402 as it is, and θ ₁ The viewing angle changing means can be driven with low power consumption while narrowing the viewing angle. In FIG. 4B, the brightness is increased by increasing the power supply to the backlight unit 403, and at the same time, the driving voltage to the optical element 402 is lowered below the predetermined value to increase the light scattering. Represents a state. In this case, the light from the backlight unit 403 is diffused by the optical element 402, and θ ₂ The viewing angle can be widened because it passes through the liquid crystal display panel 401.
[0037]
FIG. 5 is a conceptual diagram of the viewing angle changing means disclosed in Japanese Patent Laid-Open No. 6-59287. In the technique disclosed in Japanese Patent Laid-Open No. 6-59287, the traveling direction of light incident on the display liquid crystal cell 500 is controlled by using a guest / host liquid crystal cell 503 containing a dye molecule having an elongated shape. . An analyzer 501 and a polarizer 502 are attached to the outside of the display liquid crystal cell 503. The guest / host liquid crystal cell 503 is composed of a liquid crystal material sandwiched between two transparent substrates 505 when the transparent electrodes 504 are arranged facing each other, and a voltage applying means 506 connected between the transparent electrodes 14. . The liquid crystal material includes liquid crystal molecules 507 and dichroic dye molecules 508. FIG. 5A shows a state where the optical axes (major axes) of the liquid crystal molecules 507 and the dichroic dye molecules 508 are substantially parallel to the surface of the transparent substrate 505 without applying a voltage to the transparent electrode 504 from the voltage applying means 506. Represents. In this case, by making the optical axes of the liquid crystal molecules 507 and the dichroic dye molecules 508 coincide with the optical axes of the polarizing plates such as the analyzer 501 and the polarizer 502 used for liquid crystal display, the light that has passed through the polarizing plate remains as it is. Since it passes through the guest-host liquid crystal cell 503, the viewing angle can be widened. FIG. 5B shows a state in which a voltage is applied to the transparent electrode 504 from the voltage application unit 506 to start up the liquid crystal molecules 507 and the dichroic dye molecules 508. In such a case, light having an optical axis other than the optical axis of the dichroic dye molecule 508 is absorbed by the dichroic dye molecule 508 and does not pass through the guest / host liquid crystal cell 503, so that the viewing angle can be narrowed.
[0038]
FIG. 6 is a conceptual diagram of the viewing angle changing means disclosed in Japanese Patent Laid-Open No. 9-288280. In the technique disclosed in Japanese Patent Laid-Open No. 9-288280, a liquid crystal display 602 includes a filter 601 capable of controlling the refractive index of an optical path on a display screen, and the filter 601 is controlled by a control device 604 so that a viewing angle is controlled. Is something that changes. A backlight 603 is provided as a light source of the liquid crystal display.
[0039]
Next, details of the operation of the apparatus configured as described above will be described.
[0040]
The operation when a command for controlling the viewing angle of the display screen 102 according to the result of light detection from the sensor units 103 and 106 is input from the operation unit 104 of the portable terminal 100 will be described with reference to the flowchart shown in FIG.
[0041]
First, when a command for controlling the viewing angle is input from the operation unit 104, the amount of light from the sensor unit 103 on the surface of the mobile terminal 100 is detected. (Step # 701)
Next, the amount of light from 106 on the back surface of the mobile terminal 100 is detected. (Step # 702)
In step # 703, it is determined whether the light sensor 103 on the front surface of the portable terminal 100 detects light of a predetermined value or more and the light sensor 106 on the back surface does not detect light of a predetermined value or more.
[0042]
In step # 703, if the light sensor 103 on the front surface of the portable terminal 100 detects light of a predetermined value or more and the light sensor 106 of the back surface does not detect light of a predetermined value or more, the display screen 102 is displayed on the predetermined screen. The first mode for controlling the first viewing angle range is set. (Step # 704)
In step # 703, if the light sensor 103 on the front surface of the portable terminal 100 detects light above a predetermined value and the light sensor 106 on the back surface does not detect light above the predetermined value, the display screen 102 Is set to a second mode in which the angle is controlled to a predetermined second viewing angle range narrower than the first viewing angle range. (Step # 705)
By performing the above operation, the amount of light detected by the optical sensor 103 on the surface of the portable terminal 100 when the portable terminal 100 is placed on a desk or the like with the display screen 102 facing up and when it is not. The viewing angle of the display screen 102 can be changed based on the amount of light detected by the optical sensor 106 on the back surface, and the privacy displayed on the display screen 102 when the mobile terminal 100 is carried by the user. The information can be easily made invisible to others.
[0043]
(Modification)
In steps # 704 and # 705, the angle of the second viewing angle range may be wider than the first viewing angle range.
[0044]
In this way, when the user is carrying the mobile terminal 100, the viewing angle of the display screen 102 can be widened and the display screen 102 can be viewed together with a friend, and when the mobile terminal 100 is on a desk, etc. The viewing angle of the screen 102 can be narrowed so that it is not easily viewed by others.
[0045]
Further, a light-emitting body (not shown) having a light amount larger than that of the display screen 102 may be provided around the display screen 102, and the light amount of the light-emitting body may be changed based on the light amount detected by the optical sensor 106.
[0046]
In this configuration, the same effect as described above can be obtained.
[0047]
Further, a light shield (not shown) may be provided between the display screen 102 and the light emitter so that the user does not easily see the display screen 102 due to light emission of the light emitter.
[0048]
Further, a viewing angle of the display screen 102 may be controlled by providing a lens optical system on the upper surface of the display screen 102 and controlling the lens optical system. Hereinafter, an embodiment in which the viewing angle of the display screen 102 is changed by providing and controlling a lens optical system as the viewing angle changing means will be described.
[0049]
FIG. 19 is a conceptual diagram of a lens optical system provided as viewing angle changing means. FIG. 19A is a sectional view of the lens optical system, and FIG. 19B is a perspective view of the lens optical system. In FIG. 19A, a lens 1909 having a predetermined focal length and a lens support 1908 are provided in a housing 1906, and a lead screw 1902 and a guide rail 1904 extend from the lens support 1908. A display screen 1905 is engaged with the lead screw 1902 and the guide rail 1907 by a female screw bearing 1903 and a sliding bearing 1904, respectively. Rotates, and the display screen 1905 engaged by the female screw bearing 1903 moves in the direction of the arrow in the figure. The moving direction of the display screen 1905 is controlled by the switch 1910 with respect to the rotation direction of the stepping motor 1901.
[0050]
FIG. 20 is a block diagram of a lens optical system provided as a viewing angle changing unit. A microcomputer 2001 detects the state of the switch 2000, and controls the rotation of the stepping motor 2002 by passing a current through the stepping motor 2002 in a predetermined direction according to the detection result.
[0051]
A control method of the stepping motor 1901 will be described with reference to FIG. In the graph showing the operation of the stepping motor 1901 shown in FIG. 21, the coordinates representing the position on the lead screw 1902 are such that the coordinate value becomes larger as approaching the lens 1909 side with a predetermined reference point as the origin. The display screen 1905 is set to a predetermined ₂ The movement of the stepping motor 1901 when moving to the arbitrary position x on the lead screw 1902 indicated by the point A first is as follows. ₁ In order to once return the coordinates of the display screen 1905 located at the predetermined reference point, the display screen 1905 is moved to the stepping motor side. At this time, since backlash occurs in the control of the stepping motor, the display screen 1905 does not stop directly at the reference point, but moves further from the reference point indicated by the point B to the stepping motor 1901 side, and then a predetermined x ₂ The display screen 1905 is moved in the direction toward, and control is performed up to the reference point. The display screen 1905 does not stop at the reference point, and the target position x shown at the point C ₂ Moved to.
[0052]
As described above, the viewing angle of the display screen 102 can be controlled according to the situation of the mobile terminal 100 by providing the lens optical system on the upper surface of the display screen 102 and controlling it.
[0053]
(Second Embodiment)
In the first embodiment, the viewing angle of the display screen 102 is controlled according to the situation of the mobile terminal 100 using the optical sensor as the situation detection unit. However, the present invention is not limited to this. An infrared light emitting device and an infrared light receiving device may be provided as detection means, and the light amount or color development of the display screen 102 may be controlled according to the situation of the mobile terminal 100. Hereinafter, an embodiment will be described in which an infrared light emitting device and an infrared light receiving device are provided in the situation detection means, and the light amount or color development of the display screen 102 is controlled according to the reaction of the situation detection means.
[0054]
FIG. 8 is a conceptual diagram of the mobile terminal 100 according to the second embodiment of the present invention. Infrared light receiving devices 130 and 131 and infrared light emitting devices 132 and 133 are provided as situation detecting means. The infrared light receiving device 130 provided on the side surface (hereinafter, abbreviated as the front surface) where the display screen 102 is provided in the portable terminal 100 is emitted from the infrared light emitting device 132 provided on the same side surface as the infrared light receiving device. It is provided for receiving infrared rays or infrared rays contained in external light. Similarly, the infrared light receiving device 133 provided on the same side surface as the speaker 107 (hereinafter, abbreviated as the back surface) receives infrared light or external light emitted from the infrared light emitting device 131 provided on the same side surface as the infrared light receiving device. It is provided to receive the contained infrared rays. The display configuration and detection configuration in the portable terminal 100 of the present invention other than the infrared light receiving devices 130 and 131 and the infrared light emitting devices 132 and 133 are the same as those in the first embodiment.
[0055]
The operation when a command for controlling the light amount of the display screen 102 in response to infrared detection from the sensor units 132 and 133 is input from the operation unit 104 of the portable terminal 100 will be described with reference to the flowchart shown in FIG.
[0056]
First, when a command for controlling the amount of light on the display screen 102 is input from the operation unit 104, the infrared light receiving device 130 on the surface of the mobile terminal 100 detects whether or not infrared light of a predetermined value or more is received. (Step # 901)
Next, it is detected whether the infrared ray receiving device 131 on the back surface of the portable terminal 100 receives infrared rays of a predetermined value or more. (Step # 902)
In step # 903, it is determined whether or not the infrared light receiving device 130 detects infrared light of a predetermined value or more and the infrared light receiving device 131 does not detect infrared light of a predetermined value or more.
[0057]
In step # 903, if the infrared light receiving device 130 detects an infrared ray of a predetermined value or more and the infrared light receiving device 131 does not detect an infrared ray of a predetermined value or more, the display screen 102 is displayed with a predetermined first light quantity. Set to. (Step # 904)
In step # 903, if the infrared light receiving device 130 detects infrared light of a predetermined value or more and the infrared light receiving device 131 does not detect infrared light of a predetermined value or more, the display screen 102 is A predetermined second light amount that is smaller than the light amount is set. (Step # 905)
By performing the above operation, the infrared rays detected by the infrared detection device 130 on the surface of the portable terminal 100 when the portable terminal 100 is placed on a desk or the like with the display screen 102 facing upward or not. The amount of light received on the display screen 102 can be controlled based on the amount of received light and the amount of received infrared light detected by the infrared detecting device 131 on the back surface. When the mobile terminal 100 is carried by a user, the display screen is displayed. The privacy information displayed in 102 can be easily viewed by others.
[0058]
(Modification)
In steps # 904 and # 905, the second light amount may be made larger than the first light amount.
[0059]
In this way, when the user is carrying the portable terminal 100, the display screen 102 can be viewed with friends by increasing the amount of light on the display screen 102, and when the portable terminal is on a desk or the like, the display screen is displayed. The amount of light 102 can be reduced so that it is not easily viewed by others.
[0060]
In step # 904 and step # 905, instead of controlling the display screen 102 to display the first and second light amounts, the display screen 102 is displayed in the predetermined first hue range in step # 904. In step # 905, the display on the display screen 102 may be controlled to a predetermined second hue range narrower than the first hue range.
[0061]
By performing the above operation, the infrared rays detected by the infrared detection device 130 on the surface of the portable terminal 100 when the portable terminal 100 is placed on a desk or the like with the display screen 102 facing upward or not. The hue of the display screen 102 can be controlled based on the amount of received light and the amount of received infrared light detected by the infrared detecting device 131 on the back surface. When the mobile terminal 100 is carried by a user, the display screen is displayed. The hue of the privacy information displayed in 102 can be narrowed so that it cannot be easily seen by others.
[0062]
In the above, the second hue range may be wider than the first hue range.
[0063]
In this way, when the user is carrying the mobile terminal 100, the hue range of the display screen 102 can be widened so that the user can easily view the display screen 102 together with a friend, and the mobile terminal is on a desk or the like. Can narrow the hue range of the display screen 102 so that it cannot be easily viewed by others.
[0064]
In step # 904 and step # 905, instead of controlling the display on the display screen 102 to the predetermined first and second light amounts, the display on the display screen 102 is displayed in the predetermined first saturation region in step # 904. In step # 905, the display on the display screen 102 may be controlled to a predetermined second saturation area narrower than the first saturation area.
[0065]
In this way, when the mobile terminal 100 is carried by a user, it is possible to make it difficult for others to see the privacy information displayed on the display screen 102.
[0066]
In the above, the second saturation region may be wider than the first saturation region.
[0067]
In this way, when the user is carrying the mobile terminal 100, the saturation area of the display screen 102 can be widened so that the user can easily browse the display screen 102 together with a friend. In some cases, the saturation area of the display screen 102 can be narrowed so that it cannot be easily viewed by others.
[0068]
(Third embodiment)
In the second embodiment, the infrared light emitting devices 130 and 131 and the infrared light receiving devices 132 and 133 are provided as the state detecting means, and the light amount or color development of the display screen 102 is controlled according to the state of the mobile terminal 100. However, the present invention is not limited to this, and an image pickup device may be provided as a situation detection unit as described below to control sounds emitted from the speakers 101 and 107 according to the situation of the mobile terminal 100. Hereinafter, an embodiment will be described in which an imaging element is provided as the situation detection unit and the sound emitted from the speakers 101 and 107 is controlled according to the situation of the mobile terminal 100.
[0069]
FIG. 10 is a conceptual diagram of the mobile terminal 100 according to the third embodiment of the present invention. Imaging devices 1001 and 1002 for detecting the status of the mobile terminal 100 are provided as status detection means. The display configuration and detection configuration in the portable terminal 100 of the present invention other than the imaging devices 1001 and 1002 are the same as those in the first embodiment.
[0070]
FIG. 11 shows an operation when a light amount from the image sensors 1001 and 1002 is detected from the operation unit 104 of the portable terminal 100 and a command for controlling the volume of sound emitted from the speakers 101 and 107 is input according to the detection result. It demonstrates according to the flowchart shown.
[0071]
First, when a command for controlling the volume of the speaker is input from the operation unit 104, the amount of light from the image sensor 1001 on the surface of the mobile terminal 100 is detected. (Step # 1101)
Next, the amount of light from the image sensor 1002 on the back surface of the mobile terminal 100 is detected. (Step # 1102)
In step # 1103, it is determined whether or not the image sensor 1001 on the front surface of the portable terminal 100 detects a predetermined value or more and the image sensor 1002 on the back surface does not detect a light amount greater than or equal to the predetermined value.
[0072]
In step # 1103, if the image sensor 1001 on the front surface of the portable terminal 100 detects a predetermined value or more and the image sensor 1002 on the back surface does not detect a light amount greater than the predetermined value, the light is emitted from the speaker 101 or 107. The sound volume is controlled to a predetermined first volume. (Step # 1104)
In step # 1103, if the image sensor 1001 on the front surface of the portable terminal 100 detects a predetermined value or more and the image sensor 1002 on the back surface does not detect a light amount greater than the predetermined value, the speaker 101 or The volume of the sound emitted from 107 is controlled to a predetermined second volume smaller than the first volume. (Step # 1105)
By performing the above operation, the amount of light detected by the image sensor 1001 on the surface of the mobile terminal 100 when the mobile terminal 100 is placed on a desk or the like with the display screen 102 facing up and when it is not. The volume of the sound emitted from the speaker 101 or 107 can be changed based on the amount of light detected by the image sensor 1002 on the back surface, and the ringing tone and reception sound when the mobile terminal 100 is carried by the user can be changed. By making it small, it is possible to prevent others from knowing the contents of incoming calls and calls.
[0073]
(Modification)
In steps # 1004 and # 1005, the second volume may be made larger than the first volume.
[0074]
In this way, when the user is carrying the mobile terminal 100, the ringing sound and the receiving sound can be transmitted to surrounding friends, and when the mobile terminal is on the desk, the ringing sound and the receiving sound are reduced. By doing so, it is possible to prevent others from easily knowing the contents of incoming calls and calls.
[0075]
(Fourth embodiment)
In the third embodiment, an image sensor is provided as a situation detection unit, and the sound emitted from the speakers 101 and 107 is controlled according to the situation of the mobile terminal 100. However, the present invention is not limited to this. An angular velocity sensor may be provided as the situation detection means, and the size of the character font on the display screen 102 may be changed according to the situation of the mobile terminal 100. Hereinafter, an embodiment will be described in which an angular velocity sensor is provided as the situation detection unit and the size of the character font on the display screen 102 is changed according to the situation of the mobile terminal 100.
[0076]
FIG. 12 is a conceptual diagram of the mobile terminal 100 according to the fourth embodiment of the present invention. The display configuration and detection configuration in the mobile terminal 100 of the present invention are the same as those in the first embodiment except that the mobile terminal 100 includes an angular velocity sensor 1300 provided instead of the optical sensor 103 as a situation detection unit. It shall be.
[0077]
FIG. 13 is a perspective view of an angular velocity sensor 1300 built in the mobile terminal 100. Reference numeral 1302 denotes an outer cylinder having a chamber in which a floating body 1303 and a liquid 1304 described later are enclosed. Reference numeral 1303 denotes a floating body held by a later-described floating body holding body 1305 so as to be rotatable on a shaft 1303a. A U-shaped yoke 1307 forms a closed magnetic path together with the floating body 1303. Reference numeral 1309 denotes a light receiving element (PSD) whose output changes depending on the position of received light. The light emitting element 1308 and the light receiving element 1309 constitute optical angular displacement detection means of transmitting light through a projection (reflective surface) of the floating body 1303 (not shown).
[0078]
Operation when a command for controlling the size of the character font displayed on the display screen 102 is input from the operation unit 104 of the mobile terminal 100 according to the result of detecting the rotation of the mobile terminal 100 from the angular velocity sensor 1300 This will be described with reference to the flowchart shown in FIG.
[0079]
First, when a command for controlling the size of the character font is input from the operation unit 104, the angular velocity from the angular velocity sensor 1300 built in the portable terminal 100 is detected. (Step # 1401)
In step # 1402, it is determined whether the angular velocity sensor 1300 incorporated in the portable terminal 100 has detected an angular velocity greater than a predetermined value.
[0080]
If it is determined in step # 1402 that the angular velocity sensor 1300 built in the portable terminal 100 has detected an angular velocity greater than a predetermined value, the size of the character font displayed on the display screen 102 is set to the first character font. Set to the size of. (Step # 1403)
If it is not determined in step # 1402 that the angular velocity sensor 1300 incorporated in the portable terminal 100 has detected an angular velocity greater than a predetermined value, the size of the character font displayed on the display screen 102 is set to the first font. A predetermined second character font larger than the character font size is set. (Step # 1404)
By performing the above operation, the mobile terminal 100 is detected by the angular velocity sensor 1300 built in the mobile terminal 100 when the mobile terminal 100 is being carried by the user and when it is moving. Based on the angular velocity, the size of the character font displayed on the display screen 102 can be changed, and privacy information displayed on the display screen 102 can be easily updated when the mobile terminal 100 is carried by a user. Can be seen by others.
[0081]
(Modification)
In steps # 1403 and # 1404, the size of the second character font may be made smaller than the size of the first character font.
[0082]
In this way, when the user is carrying the mobile terminal 100, the user can view the display screen 102 with a friend by enlarging the character font of the display screen 102, and display when the mobile terminal is on a desk or the like. The character font on the screen 102 can be made small so that it cannot be easily viewed by others.
[0083]
In step # 1403, instead of controlling the size of the character displayed on the display screen 102, the character font type is changed to the first character font type, and in step # 1404 the first character font type. You may change to the kind of predetermined 2nd character font with worse visibility.
[0084]
In this way, when the mobile terminal 100 is carried by a user, it is possible to make it difficult for others to see the privacy information displayed on the display screen 102.
[0085]
In steps # 1403 and # 1404, the first character font type may be more visible than the second character font type.
[0086]
In this way, when the user is carrying the mobile terminal 100, the user can browse the display screen 102 together with friends by making the type of character font on the display screen 102 easy to see, and the mobile terminal 100 can be placed on a desk or the like. In some cases, the type of character font on the display screen 102 may be poorly visible so that it cannot be easily viewed by others.
[0087]
(Fifth embodiment)
In the fourth embodiment, the size of the character font displayed on the display screen 102 is controlled according to the situation of the mobile terminal 100 using the angular velocity sensor 1300 as the situation detection unit. However, the present invention is not limited to this. Instead, an acceleration sensor as a situation detecting means and a calling vibration means built in the portable terminal 100 may be provided to control the vibration pattern of the calling vibration means according to the situation of the portable terminal 100 as follows. . Hereinafter, an embodiment will be described in which an acceleration sensor is provided as a situation detection unit and a vibration pattern of a calling vibration unit (not shown) built in the portable terminal 100 is controlled according to the situation of the portable terminal 100.
[0088]
FIG. 15 is a conceptual diagram of the portable terminal 100 according to the fifth embodiment of the present invention. The display configuration and detection configuration of the portable terminal 100 according to the present invention are that the acceleration sensor 1600 provided in place of the optical sensor 103 as the situation detecting means is built in the portable terminal 100, and a vibration actuator is provided as the calling vibration means. It is the same as the first embodiment except that it is built in the mobile terminal 100.
[0089]
FIG. 16 is a conceptual diagram of an acceleration sensor 1300 built in the mobile terminal 100. A piezoelectric element 1604 and this electrical contact 1603 are provided in the outer wall 1605 and are connected to a connection terminal 1606 existing outside the outer wall 1605 by a conductive wire. A weight 1602 is provided adjacent to the electrical contact 1603 of the piezoelectric element 1604, and is fixed to the outer wall 1605 by a compression spring 1601. When acceleration is applied to the weight 1602 in the direction of the arrow in the drawing, a force proportional to the magnitude of the acceleration acts on the weight 1602. By transmitting this force to the piezoelectric element 1604, a voltage corresponding to the applied force is generated in the piezoelectric element. Therefore, by detecting the voltage applied to the connection terminal 1606 connected to the piezoelectric element 1604, the acceleration applied to the acceleration sensor can be detected.
[0090]
FIG. 17 is a conceptual diagram of a vibration actuator 1700 disclosed in Japanese Patent Laid-Open No. 05-305270. In the technique disclosed in Japanese Patent Laid-Open No. 05-305270, a plate-like vibrator 1701 is rotatably supported by providing a shaft 1702, a permanent magnet 1703 is fixed to a part of the vibrator, and a restoring spring 1704 is further provided. On the other hand, the bifilar-wound oscillation coil 1705 is disposed opposite to and fixed to the permanent magnet 1703 through an air gap, and an alternating frequency is input to one of the coils, thereby sensing the anti-oscillation operation of the permanent magnet 1703 on the other side. The vibration actuator 1700 is characterized in that the bifilar-wound oscillation coil 1705 is disposed on the outer periphery facing portion of the vibrating member and the surface facing portion of the vibrating member. Is arranged. By inputting an alternating frequency to one of the coils, the plate-like vibrator vibrates, and the portable terminal 100 is vibrated.
[0091]
An operation when a command for controlling a vibration pattern is input from the operation unit 104 of the mobile terminal 100 according to the result of detecting the acceleration applied to the mobile terminal 100 from the acceleration sensor 1600 will be described with reference to the flowchart shown in FIG.
First, when a command for controlling a vibration pattern is input from the operation unit 104, acceleration generated by the movement of the mobile terminal 100 is detected by the acceleration sensor 1300. (Step # 180)
In step # 1802, it is determined whether or not the acceleration sensor 1300 has detected an acceleration of a predetermined value or more.
[0092]
In step # 1802, if the acceleration sensor 1300 detects an acceleration greater than or equal to a predetermined value, the vibration pattern used by the vibration actuator 1700 is set to a predetermined first vibration pattern. (Step # 1803)
In step # 1802, if the acceleration sensor 1300 does not detect an acceleration greater than a predetermined value, the vibration pattern used by the vibration actuator 1700 is set to a predetermined second vibration pattern having a vibration time shorter than that of the first vibration pattern. To do. (Step # 1804)
By performing the above operation, the mobile terminal 100 is based on the acceleration value detected by the acceleration sensor built in the mobile terminal 100 when the display screen 102 is placed on a desk or the like and when it is not. The vibration pattern of the vibration actuator 1700 can be changed, and when the mobile terminal 100 is placed on a desk or the like, the vibration of the vibration actuator 1700 and the object on which the mobile terminal 100 is placed are resonated and are harsh. Noise can be reduced.
[0093]
(Modification)
In steps # 1803 and # 1804, the vibration time of the second vibration pattern may be longer than that of the first vibration pattern.
[0094]
In this way, when the user is carrying the mobile terminal 100, it is possible to make it difficult for people around the user to notice vibration using a vibration pattern with a short vibration time. In this case, the vibration of the vibration actuator 1700 and the object on which the portable terminal 100 is placed can resonate to generate annoying noise, which can make the user easily aware of the vibration.
[0095]
In steps # 1803 and # 1804, the same effect can be obtained by changing the magnitude of vibration instead of changing the vibration pattern of the vibration actuator 1700.
[0096]
【The invention's effect】
As described above, according to the present invention, it is possible to protect privacy when a portable terminal is carried and to provide a usage environment suitable for each of the portable terminal and when left on a desk.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of a mobile terminal according to an embodiment of the present invention.
FIG. 2 is a block diagram showing display means and detection means provided in the portable terminal according to the embodiment of the present invention.
FIG. 3 is a conceptual diagram of an optical sensor provided in the mobile terminal according to the first embodiment of the present invention.
FIG. 4 is a conceptual diagram of a viewing angle changing means disclosed in Japanese Patent Laid-Open No. 9-105907.
FIG. 5 is a conceptual diagram of a viewing angle changing means disclosed in Japanese Patent Laid-Open No. 6-59287.
FIG. 6 is a conceptual diagram of viewing angle changing means disclosed in Japanese Patent Laid-Open No. 9-288280.
FIG. 7 is a flowchart showing an operation for controlling the viewing angle according to the first embodiment of the present invention.
FIG. 8 is a conceptual diagram of a mobile terminal 100 according to a second embodiment of the present invention.
FIG. 9 is a flowchart showing an operation for controlling the light amount of the display screen according to the second embodiment of the present invention;
FIG. 10 is a conceptual diagram of a mobile terminal 100 according to a third embodiment of the present invention.
FIG. 11 is a flowchart showing an operation for controlling sound according to a third embodiment of the present invention;
FIG. 12 is a conceptual diagram of a mobile terminal 100 according to a fourth embodiment of the present invention.
FIG. 13 is a perspective view of an angular velocity sensor built in a mobile terminal 100 according to a fourth embodiment of the present invention.
FIG. 14 is a flowchart showing an operation for controlling the size of a character font according to a fourth embodiment of the present invention;
FIG. 15 is a conceptual diagram of a mobile terminal according to a fifth embodiment of the present invention.
FIG. 16 is a conceptual diagram of an acceleration sensor built in a mobile terminal according to a fifth embodiment of the present invention.
FIG. 17 is a conceptual diagram of a vibration actuator built in a mobile terminal according to a fifth embodiment of the present invention.
FIG. 18 is a flowchart showing an operation for controlling a vibration pattern according to a fifth embodiment of the present invention.
FIG. 19 is a conceptual diagram of a lens optical system according to a fifth embodiment of the present invention.
FIG. 20 is a block diagram of a lens optical system according to a fifth embodiment of the present invention.
FIG. 21 is a conceptual diagram illustrating the operation of a stepping motor according to a fifth embodiment of the present invention.
[Explanation of symbols]
100 mobile devices
101, 107 Speaker
102 Display screen
103, 106 sensors
104 Operation unit
105 microphone
301 Photosensitive area of photodiode
302 Exterior wall of photodiode
303 Photodiode connection terminal
401 liquid crystal display panel
402 Optical element
403 Backlight unit
500 Liquid crystal cell for display
501 analyzer
502 Polarizer
503 Guest / host LCD
504 Transparent electrode
505 Transparent substrate
506 Voltage application means
507 Liquid crystal molecules
508 Dichroic dye molecule
601 filter
602 Liquid crystal display
603 Backlight
604 control device
1600 Accelerometer
1601 Compression spring
1602 Weight
1603 Electrical contacts
1604 Piezoelectric element
1605 Exterior wall
1606 Connection terminal
1700 Vibration actuator
1701 Flat vibrator
1702 axis
1703 Permanent magnet
1704 Coil spring for restoration
1705 Bifilar winding coil

Claims (19)

In a portable terminal provided with a display means for displaying at least one piece of information,
At least one situation detecting means for detecting the situation of the mobile terminal as a physical quantity;
A portable terminal comprising: a viewing angle control unit that controls a viewing angle of the display unit according to a situation detection result of the situation detection unit. In a portable terminal provided with a display means for displaying at least one piece of information,
At least one situation detecting means for detecting the situation of the mobile terminal as a physical quantity;
A portable terminal comprising display control means for controlling a light amount and color development of the display means in accordance with a situation detection result of the situation detection means. In a portable terminal provided with a display means for displaying at least one piece of information,
At least one situation detecting means for detecting the situation of the mobile terminal as a physical quantity;
At least one sound output means for emitting a ringing tone or operation sound, voice, music;
A portable terminal comprising sound control means for controlling the type or volume of the sound output means in accordance with the situation detection result of the situation detection means. In a portable terminal provided with a display means for displaying at least one piece of information,
At least one situation detecting means for detecting the situation of the mobile terminal as a physical quantity;
A portable device comprising display font changing means for changing the type or size of the character font of the display means according to the situation detection result of the situation detection means. In a portable terminal provided with a display means for displaying at least one piece of information,
At least one situation detecting means for detecting the situation of the mobile terminal as a physical quantity;
Vibration means for vibrating the device to inform the user of information;
A portable terminal comprising: vibration control means for controlling the vibration means in accordance with a situation detection result of the situation detection means. In claims 1-5,
The portable terminal according to claim 1, wherein the status detection means is an optical sensor provided on one or both of the front surface and the back surface of the portable terminal. In claims 1-5,
The portable terminal according to claim 1, wherein the status detection means is an infrared light emitting device and an infrared sensor provided on one or both of the front and back of the portable terminal. In claims 1-5,
The mobile terminal according to claim 1, wherein the status detection means is an image sensor provided on one or both of the front surface and the back surface of the mobile terminal. In claims 1-5,
The portable terminal characterized in that the situation detecting means is an angular velocity sensor. In claims 1-5,
The portable terminal characterized in that the situation detecting means is an acceleration sensor. In claim 1,
The mobile terminal according to claim 1, wherein the viewing angle display means includes a lens in front of the display means, and limits a viewing angle depending on a lens position or an imaging range of the lens. In claim 1,
The mobile terminal according to claim 1, wherein the viewing angle display means is provided with a light emitter having higher illuminance than the display screen around the display means. In claim 11,
A portable terminal, wherein the light emitter is light-shielded so that light does not leak inside a display screen. In claim 11,
A portable terminal, wherein the light emitter is built in a portable terminal. In claim 11,
A portable terminal, wherein the light emitter is removable from the portable terminal. In claim 2,
The portable terminal characterized in that the display control means increases or decreases or eliminates the light amount of the display screen. In claim 2,
The portable terminal characterized in that the display control means changes the hue or saturation of the display means. In claim 5,
The portable terminal characterized in that the vibration control means changes the magnitude of vibration of the vibration means or stops the vibration. In claim 5,
The portable terminal characterized in that the vibration control means changes a vibration pattern of the vibration means.

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