JP4462886B2 - Information display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information display device which displays the images of a map, character, etc., on a display element in a form appropriate according to the operating state of a movable mechanism. <P>SOLUTION: A reference direction of azimuth detection in an azimuth detector 158 is set on a second casing 102 where a display element 104 is held, out of a first casing 101 and second casing 102 coupled to each other via the movable mechanism 103. When the positional relations of the two casings are changed by a change in operation styles and the direction of a display screen 104 with respect to a user changes, the result of the detection of the azimuth detector 158 is corrected according to the operating state of the movable mechanism 103 detected in an opening and closing detector 153, the direction of the map on the display screen 104 is corrected according to the correction. Further, the displayed image after the correction relating to the direction of the map is subjected to the prescribed rotation processing meeting the result of the detection of the opening and closing detector 153 and the image on the display screen 104 is controlled to the direction appropriate according to the operation styles. <P>COPYRIGHT: (C)2005,JPO&amp;NCIPI

Description

  The present invention relates to an information display device that displays information on the position and direction of a current location using a map, and relates to an information display device such as a mobile phone having a navigation function and a PDA (personal digital assistant). .

  In recent years, portable electronic devices such as mobile phones and PDAs have become increasingly sophisticated with the improvement of processor processing power and the development of low power consumption technologies. For example, a navigation function using a GPS (global positioning system) that is widely used for in-vehicle use is being installed in mobile phones.

  For a mobile phone having a navigation function, there is a conventional technique described in Patent Document 1, for example.

  The technique described in Patent Literature 1 is to display the movement trajectory of the terminal on the map by sequentially plotting the position of the terminal on the map, but if the direction can be detected in the terminal Using the detection result, the map orientation can be displayed in accordance with the actual orientation, and a more practical navigation function can be realized.

  Direction detection is generally performed using a geomagnetic sensor. For example, a reference two-dimensional coordinate system is set on a plane parallel to the ground plane, and the strength of geomagnetism in each coordinate axis direction is measured by a geomagnetic sensor. The azimuth angle is obtained from the angle formed by the two-dimensional geomagnetic vector obtained by this measurement and the coordinate axis.

JP 2001-124581 A

By the way, many recent mobile phones have a display unit and a key operation unit arranged in separate casings. This type of mobile phone is generally used in a state where the two casings are folded and the key operation unit is hidden inside (closed state), or the key operation unit and the display unit are both exposed (open state). Is done.
As described above, in the case of a mobile phone having a structure in which the positional relationship between the two cases changes according to the operation style, the measurement direction of the geomagnetic sensor changes with the change of the operation style depending on the position where the geomagnetic sensor is arranged. However, the direction detection result changes.

Further, the two-case type structure described above includes a type in which the display unit is hidden inside in a closed state and a type in which the display unit is exposed to the outside. The former type includes, for example, a type that is folded inward with the surface of the display unit and the surface of the key operation unit facing each other. In the latter type, for example, there is a type in which the surface of the display unit and the surface of the key operation unit rotate in a substantially parallel state, and the surface of the key operation unit is hidden under the casing of the display unit in the closed state. .
In the case of the latter type, since the display unit can be used in both the open state and the closed state, if the direction of the display screen with respect to the user changes due to the change of the operation style, the picture or character image is accordingly changed. It is preferable that the display is rotated to make the display easier to see.
However, if the direction detection result also changes with the change of the operation style as described above, the map image displayed on the display unit is also rotated in accordance with this direction, so only the direction of the display screen is changed. If the image is rotated in consideration, the map cannot be displayed in the correct orientation.

  The present invention has been made in view of such circumstances, and its purpose is to have two housings connected via a movable mechanism and a structure having a display unit in one of the housings. An object of the present invention is to provide an information display device that can display an image such as a map or characters representing the position and orientation of the current location on a display unit in an appropriate state according to the operating state of a movable mechanism.

A first invention that achieves the above object is an information display device that displays information on the position and orientation of the current location using a map, and includes a first casing and display means for displaying at least the map. A second casing rotatably connected to the first casing about an axis perpendicular to the display screen of the display means via the movable mechanism, and the movable mechanism An operating state determining means for determining a plurality of rotation states of the second casing relative to the first casing, and an orientation for detecting a geographical orientation of the first reference direction set in the second casing a detecting means, in said plurality of rotational state determined by the operation state judgment means, the first reference direction as the direction with respect to the first housing becomes constant correction, the corrected in the first The geographical direction of the reference direction and the display means In the plurality of rotation states determined by the first display control means for controlling the orientation of the map so that the orientation of the map in the second reference direction is equal, and the operation state determination means, the first Second display control means for rotating the display image including the map displayed on the display means and controlled by the first display control means so that the display direction of the display means with respect to one housing is constant; It is characterized by having.

A second invention that achieves the above object is an information display device that displays information on the position and orientation of the current location and additional information using a map, and displays the first housing and at least the map. A first unit that includes a display unit and that is connected to the first casing that is rotatably connected to the first casing around an axis perpendicular to the display screen of the display unit via a movable mechanism; Two housings, azimuth detecting means for detecting the geographical orientation of the first reference direction set in the second housing, and the second housing with respect to the first housing via the movable mechanism. and determining the operating state determination means a plurality of rotation states in the plurality of rotational state determined by the operation state judgment means, and corrects the first reference direction as the direction with respect to the first housing becomes constant , The corrected first A first display control means for controlling the orientation of the map so that the geographical orientation of the reference direction is equal to the orientation of the map in the second reference direction set in the display means; The image of the map displayed on the display unit controlled by the first display control unit so that the display direction of the display unit with respect to the first casing is constant in the determined plurality of rotation states. And a second display control means for changing the arrangement of the additional information displayed together.

The movable mechanism has a plurality of operating states in which the angle formed between the first reference direction and the ground plane is equal to each other when the angle formed between the display screen of the display means and the ground plane is kept constant. Have
The azimuth detecting means may detect the geographical azimuth assuming that the first reference direction and the ground plane have a predetermined angle in the plurality of operating states.
In this case, the azimuth detection means is detected by the geomagnetism detection means for detecting geomagnetism in a plurality of predetermined directions parallel to the coordinate axes of the coordinate system set on the second casing, and the geomagnetism detection means. Azimuth angle calculating means for calculating the azimuth angle on the ground plane in the plurality of operating states based on the plurality of directions of geomagnetism and the information related to the predetermined angle.

Alternatively, the information display device may include a storage unit, and the movable mechanism may be configured such that the first casing and the first casing are different from each other so that an inclination angle formed between the display screen of the display unit and the ground plane is different in the plurality of rotation states. The second housing is connected, the storage unit stores information on a tilt angle set in advance corresponding to the plurality of operating states, and the azimuth detecting unit is determined by the operating state determining unit. In consideration of the information on the inclination angle formed between the display screen of the display means and the ground plane obtained by comparing the plurality of rotation states with the information on the inclination angle stored in the storage unit, the first reference The geographic orientation of the direction may be detected.
In this case, the azimuth detection means includes a terrestrial magnetism detection means for detecting geomagnetism in a plurality of predetermined directions parallel to the coordinate axes of the coordinate system set on the second casing, Obtained by comparing the geomagnetic information in the plurality of directions detected by the geomagnetism detecting means, the plurality of rotation states determined by the operating state determining means, and the tilt angle information stored in the storage unit. And azimuth angle calculating means for calculating an azimuth angle on the horizontal plane based on information on an inclination angle formed between the display screen of the notation display means and the horizontal plane.

Alternatively, the azimuth detecting unit may include an angle detecting unit that detects an angle formed by the first reference direction and the ground plane, and may detect the geographical azimuth corresponding to a detection angle of the angle detecting unit. .
In this case, the azimuth detecting means includes an angle detecting means for detecting an angle between the first reference direction and the ground plane, and a predetermined parallel to each coordinate axis of the coordinate system set on the second casing. The azimuth angle on the ground plane is calculated according to the geomagnetism detection means for detecting geomagnetism in a plurality of directions, the geomagnetism in the plurality of directions detected by the geomagnetism detection means, and the detection angle of the angle detection means. And azimuth angle calculating means.

Furthermore, each of the second casings is provided with a plurality of sound conversion means that are arranged at opposite ends of the second casing and perform conversion from an electric signal to sound or conversion from sound to electric signal using a magnet, The geomagnetism detection means may be disposed between the respective voice conversion means.
The present invention includes a first casing and display means, and a plurality of operating states in which one surface of the first casing and the display screen of the display means are directed in substantially the same direction via a movable mechanism. An operation for determining a plurality of operating states of the second housing relative to the first housing by movement through the movable mechanism and a second housing coupled to the first housing in a movable manner State determining means, provided in the second housing, and in the plurality of operating states, for detecting the geographical direction in a certain direction with respect to the first housing, in the plurality of operating states, in the plurality of operating states, Display control means for displaying a map on the display means based on the geographical orientation detected by the orientation detection means so that the display orientation with respect to the first housing is constant.

  According to the present invention, it has a structure having two casings connected via a movable mechanism, and a display unit is provided in one of the casings, and a map or characters indicating the position and orientation of the current location are displayed. The image can be displayed on the display unit in an appropriate state according to the operating state of the movable mechanism.

  Hereinafter, two embodiments when the present invention is applied to a multi-function mobile phone having a navigation function and an imaging function will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a block diagram showing a configuration example of a system for acquiring geographical position and map information in a mobile phone 10 according to an embodiment of the present invention.

The mobile phone 10 receives signals transmitted from three or more GPS satellites 20 that go around a known orbit, and sends information related to the received signals from the base station 30 to the server device 40 via the communication network. Send.
Server device 40 calculates the geographical position of mobile phone 10 based on the information sent from mobile phone 10. Further, based on the calculated position, the map information around the mobile phone 10 is searched from the database. Then, the calculated position information and searched map information are transmitted from the communication network to the mobile phone 10 via the base station 30.

2 and 3 are diagrams illustrating an example of the appearance of the mobile phone 10 in the open state and the closed state.
2A, 2 </ b> B, and 2 </ b> C respectively show the front, side, and back side appearances of the mobile phone 10 in the open state.
3A, 3 </ b> B, and 3 </ b> C respectively show the front, side, and back side appearances of the mobile phone 10 in the closed state.

As shown in the figure, the mobile phone 10 has two casings (a first casing 101 and a second casing 102), and these casings are connected via a movable mechanism 103. .
Each of the first casing 101 and the second casing 102 has a plate-like shape close to a rectangle with rounded corners, and the sizes thereof are close to each other. These two casings are connected by the movable mechanism 103 with the rectangular surfaces facing each other at a portion near the center of the short side on one side on the rectangular surface. The movable mechanism 103 relatively rotates the two housings around a rotation axis extending in a direction penetrating each other's rectangular surfaces.

  In the open state, as shown in FIGS. 2A and 2C, the long sides of the two housings are parallel when viewed from the front or the back. The short sides of the respective housings on the side away from the connecting portion are arranged to face each other in parallel with the above-described rotation axis in between, and are in the most distant state. As shown in FIG. 2B, the second housing 102 is inclined with respect to the first housing 101 when viewed from the side.

  On the other hand, even in the closed state, as shown in FIGS. 3 (A) and 3 (C), the long sides of the two housings are in a parallel state. The short sides of the housing are arranged facing each other in parallel without interposing the above-mentioned rotation axis, and are in the closest state. As shown in FIG. 3B, the rectangular surfaces of the first housing 101 and the second housing 102 are substantially parallel when viewed from the side, and the two housings overlap each other. Become.

  An operation key 110 is arranged on the surface of the first casing 101 on the side in contact with the second casing 102 as shown in FIG. The operation keys 110 include keys for inputting numbers and symbols, keys for selecting and executing various functions, and the like, and are mainly used in the open state. In the closed state, as shown in FIG. 3, the cover is covered with the second housing 102 and becomes unusable. This operation key 110 is included in a key input unit 154 described later.

  Further, the left side surface of the first casing 101 (the side surface of the first casing 101 viewed from the direction of the arrow E) when the surface of the operation key 110 is viewed with the connecting portion facing upward is connected to the connecting portion. The operation key 120 is arranged on the near side. The operation key 120 includes keys for selecting and executing various functions, and is mainly used in the closed state. The operation key 120 is also included in the key input unit 154 in the same manner as the operation key 110.

  Further, a microphone hole 109 is provided at the approximate center of the lower side surface of the first casing 101 when the operation key 110 is viewed with the connecting portion facing upward.

  In addition, a rectangular display screen 104 is arranged on the surface of the second casing 102 on the side not in contact with the first casing 101 as shown in FIGS. 2 (A) and 3 (A). The The display screen 104 is configured by a display device such as an LCD (liquid crystal display) panel or an organic EL (electroluminescent) panel, and is included in a display unit 155 described later.

On the same surface as the display screen 104, speaker holes 106 and 107 are provided at positions close to the short sides at both ends with the display screen 104 interposed therebetween. The hole 107 is arranged near the short side on the connecting portion side, and the hole 106 is arranged near the short side on the opposite side.
Further, on this surface, a camera lens 105 is arranged at the lower left corner when viewed with the connecting portion facing down. The camera lens 105 is included in an imaging unit 157 described later.

  As shown in FIGS. 2C and 3C, a camera lens 125 and a flash lamp 126 are arranged on the surface of the first housing 101 on the side not in contact with the second housing 102. Has been. The camera lens 125 is disposed at a position close to the short side on the connection portion side on this surface, and the flash lamp 126 is disposed at a position on the lower left side of the camera lens 125 when the connection portion is viewed upward. ing. The camera lens 125 and the flash lamp 126 are included in the imaging unit 157.

FIG. 4 is a block diagram showing a configuration example of the mobile phone 10 according to the embodiment of the present invention.
The mobile phone 10 illustrated in FIG. 4 includes a communication processing unit 150, a GPS reception unit 151, a storage unit 152, an open / close determination unit 153, a key input unit 154, a display unit 155, and a voice input / output unit 156. , An imaging unit 157, an orientation detection unit 158, and a control unit 159.
The open / close determining unit 153 is an embodiment of the operating state determining means of the present invention.
The direction detection unit 158 is an embodiment of the direction detection means of the present invention.

  The communication processing unit 150 performs processing related to wireless communication with the base station 30. For example, the transmission data output from the control unit 159 is subjected to predetermined modulation processing to be converted into a radio signal and transmitted from the antenna. In addition, a predetermined demodulation process is performed on the radio signal received by the antenna to reproduce the received data and output it to the control unit 159.

  The GPS receiving unit 151 receives a signal transmitted from the GPS satellite 20 and performs signal processing such as amplification, noise removal, and modulation, and acquires information necessary for calculating position information in the server device 40.

  The storage unit 152 stores a program executed by the control unit 159, constant data used in processing of the control unit 159, variable data that needs to be temporarily stored, captured image data, and the like.

  The open / close determining unit 153 determines whether the rotation state of the first housing 101 and the second housing 102 by the movable mechanism 103 is the above-described open state or closed state.

  When an input operation such as pressing a key is performed on the operation keys 110 and 120 described above, the key input unit 154 generates a signal corresponding to this and outputs it to the control unit 159.

  The display unit 155 displays an image corresponding to the image data generated by the control unit 159 on the display screen 104.

  The sound processing unit 156 converts the input sound into an electric sound signal by a microphone, performs signal processing such as amplification, analog-digital conversion, and encoding, and outputs the sound data of the processing result to the control unit 159. To do. In addition, audio data input from the control unit 159 is subjected to signal processing such as decoding, digital-analog conversion, and amplification to generate an audio signal, which is converted into audio by a speaker.

  The imaging unit 157 captures an image incident on the camera lens 105 or 125 described above, generates still image data or moving image data, and outputs the image data to the control unit 159. Further, the flash lamp 126 is turned on at the time of image capturing under the control of the control unit 159.

  The direction detection unit 158 detects the geographical direction of the reference direction Z set in advance on the second housing 102. The reference direction Z is set in parallel with the display screen 104, for example, in a direction (see FIG. 9) from the short side on the connection part side in the second housing 102 to the short side far from the connection part.

In addition, the direction detection unit 158 also considers the inclination angle of the reference direction Z with respect to the ground plane when detecting the direction.
If the user rotates the second housing 102 while holding the first housing 101 in a normal use state, the inclination angle of the reference direction Z with respect to the ground plane is equal in the open state and the closed state. Become.
Therefore, the azimuth detecting unit 158 detects the azimuth when the inclination angle has a predetermined common angle in the open state and the closed state as the geographical direction of the reference direction Z in the open state and the closed state.

  Here, a more detailed configuration of the orientation detection unit 158 will be described with reference to FIGS.

FIG. 5 is a block diagram illustrating a configuration example of the direction detection unit 158.
The azimuth detection unit 158 illustrated in FIG. 5 includes a geomagnetism detection unit 1581 and an azimuth angle calculation unit 1582. The geomagnetism detection unit 1581 is an embodiment of the geomagnetism detection means of the present invention.
The azimuth calculation unit 1582 is an embodiment of the azimuth calculation unit of the present invention.

The geomagnetism detection unit 1581 detects geomagnetism in a plurality of predetermined directions parallel to the coordinate axes of the coordinate system set in the first housing 101. For example, the three-axis geomagnetic component S1 in each coordinate axis direction of the three-dimensional rectangular coordinate system set in the first casing 101 is detected.
Various methods such as a method using coil excitation, a method using the Hall effect, and a method using a magnetoresistive element can be used to detect geomagnetism.

  The geomagnetism detection unit 1581 is preferably arranged as far as possible from the magnetism generation source included in the first housing 101 because an error occurs in the detection result due to the influence of magnetism other than geomagnetism.

FIG. 6 is a diagram illustrating an arrangement example of the geomagnetism detection unit 1581.
According to the example of FIG. 6, the speakers 161 and 162 are disposed at the end of the second housing 102 close to the speaker holes 106 and 107 (FIG. 2A), respectively. The speaker 161 is used for voice output of the telephone in the open state, and the speaker 162 is used for voice output of the telephone in the closed state.
Further, a microphone 163 is disposed at the end of the first casing 101 close to the microphone hole 109 (FIG. 2A), and an incoming call notification is provided at the other end facing the end. Speaker 164 is arranged.
Each of these microphones and speakers uses a magnet to perform conversion from sound to electric signal or from electric signal to sound, and the magnetism generated by this magnet causes a detection error of the geomagnetic detection unit 1581. obtain.

  Therefore, in the example of FIG. 6, the geomagnetism detection unit 1581 is disposed in a central region of the second housing 102 that is separated from the end where the speaker 161 is disposed and the end where the speaker 162 is disposed. The Thereby, the distance from the speakers 161 and 162 becomes long, and the influence of these magnetisms is relieved. In the closed state, the distance from the microphone 163 and the speaker 164 of the first housing 101 is also increased, and the influence of these magnetisms is alleviated.

  The azimuth angle calculation unit 1582 calculates the azimuth angle on the ground plane according to the geomagnetic component S1 in each direction detected by the geomagnetism detection unit 1581 and the above-described tilt angle information S2 common in the open state and the closed state. calculate.

  The inclination angle information S2 is stored as constant data in the storage unit 152, for example, and is read from the storage unit 152 by the control unit 159 and supplied to the azimuth calculation unit 1582. This makes it possible to easily change the setting value of the tilt angle.

FIG. 7 is a diagram for explaining a method of calculating the azimuth angle.
In FIG. 7, a rectangular coordinate system having coordinate axes Hx, Hy, Hz is a reference coordinate system set on the ground plane. That is, the coordinate axes Hx and Hy are coordinate axes parallel to the ground plane, and each face a predetermined direction. The coordinate axis Hz is a coordinate axis that faces in a direction perpendicular to the ground plane.
The azimuth angle θ is an angle formed by an image Zxy obtained by orthogonally projecting a vector in the reference direction Z onto the ground plane and the coordinate axis Hx. The inclination angle φ is an angle formed by the image Zxy and a vector in the reference direction Z. The twist angle η is an angle obtained by rotating the mobile phone 10 with the vector in the reference direction Z as the rotation axis.
When the azimuth angle θ, the tilt angle φ, and the twist angle η are all zero, the geomagnetic detection coordinate system set in the first housing 101 matches the coordinate system of the coordinate axes Hx, Hy, and Hz shown in FIG. To do.

  Here, if the detected value of geomagnetism corresponding to the coordinate axis Hx is α, the detected value of geomagnetism corresponding to the coordinate axis Hy is β, and the detected value of geomagnetism corresponding to the coordinate axis Hz is γ, the tangent of the azimuth angle θ shown in FIG. tan θ is expressed by the following equation.

[Equation 1]
tan θ = β / (γ · sin φ−α · cos φ) (1)

However, in the formula (1), the twist angle η is zero.
The azimuth angle calculation unit 1582 calculates the azimuth angle from the detected values of the triaxial geomagnetism using, for example, the relationship shown in the equation (1).
The above is the description of the direction detection unit 158.

Returning to the description of FIG.
The control unit 159 includes a computer that executes processing based on a program stored in the storage unit 152, and performs various processes related to the overall operation of the mobile phone 10.
For example, as processing related to the function of the telephone, processing for controlling a calling / incoming sequence of the communication processing unit 150 according to a key input operation in the key input unit 154, and voice data input / output in the voice processing unit 156 The communication processing unit 150 performs transmission / reception.
As processing related to the imaging function, processing for causing the imaging unit 157 to perform imaging processing of a still image or a moving image in response to a key input operation in the key input unit 154, or compression encoding into image data generated by the imaging processing The image processing such as the above is performed and stored in the storage unit 152. At the time of shooting a still image, a process of turning on the flash lamp 126 at an appropriate timing is also performed.

  In addition, the control unit 159 performs processing related to the navigation function, such as processing for acquiring geographical position and map information from the server device 40, or on the display screen 104 of the display unit 155 according to the detection result of the direction detection unit 158. A process for controlling the orientation of the map at, and a process for rotating the image on the display screen 104 according to the detection result of the open / close determination unit 153.

FIG. 8 is a block diagram illustrating an example of a functional configuration of a part program related to display control during navigation.
The program illustrated in FIG. 8 includes a map information acquisition unit 1591, a symbol image generation unit 1592, a first display control unit 1593, and a second display control unit 1594.
The first display control unit 1593 is an embodiment of the first display control means of the first invention.
Second display control unit 1594 is an embodiment of the second display control means of the first invention.

  The map information acquisition unit 1591 executes a process for acquiring the geographical position and map information from the server device 40. That is, the GPS receiving unit 151 receives a signal of the GPS satellite 20 and transmits information related to the received signal from the communication processing unit 150 to the server device 40, thereby returning the geographical position returned from the server device 40. Get map information.

  The symbol image generation unit 1592 generates information related to images of symbols (such as map symbols) such as characters, marks, and symbols to be displayed on the display screen 104 together with the map.

  The first display control unit 1593 corrects the detection result of the azimuth detection unit 158 according to the operating state (open state, closed state) of the movable mechanism 103 determined by the open / close determination unit 153, and the corrected detection result is obtained. Accordingly, the orientation of the map on the display screen 104 of the display unit 155 is controlled.

FIG. 9 is a diagram illustrating an example of the relationship between the reference direction Z for azimuth detection and the reference direction A on the display screen 104.
In the example of FIG. 9, the reference direction Z for azimuth detection is set to a direction from the short side closer to the connecting portion in the second casing 102 to the short side farther from the connecting portion. Further, the reference direction A on the display screen 104 is set in a direction from the short side closer to the connecting portion of the second housing 102 toward the short side farther from the connecting portion.
For example, when the reference direction Z for the direction detection and the reference direction A for the display screen are set in this way, the first display control unit 1593 is configured such that when the open / close determination unit 153 determines the open state, the direction detection unit The orientation of the map on the display screen 104 is controlled so that the orientation of the reference direction Z detected at 158 is equal to the orientation of the map in the reference direction A of the display screen 104. In this case, since the reference direction Z for detecting the azimuth coincides with the azimuth on the display screen, a map facing the correct direction is displayed on the display screen 104.

  On the other hand, when the open / close determination unit 153 determines the closed state, the first display control unit 1593 performs a correction to invert the azimuth of the reference direction Z detected by the azimuth detection unit 158 by 180 °, and after this correction The orientation of the map on the display screen 104 is controlled so that the orientation and the orientation of the map in the reference direction A of the display screen 104 are equal. The azimuth detection result in this case is equivalent to the detection result when the azimuth detection reference direction Z is inverted by 180 ° (that is, the azimuth detection result in the reference direction Z ′). And the orientation on the display screen are inverted by 180 °, and the display screen 104 displays a map facing in the opposite direction.

  In addition to the map described above, the first display control unit 1592 displays a mark indicating the geographical position of the current location acquired by the map information acquisition unit 1591 on the map, and displays the direction A on the display screen 104. The symbol image of the symbol image generation unit 1592 is displayed in the upward direction.

The second display control unit 1594 performs predetermined rotation processing on the display image of the control result in the first display control unit 1593 in accordance with the determination result S4 of the open / close determination unit 153.
That is, when the open / close determination unit 153 determines the open state, the display image of the control result in the first display control unit 1593 is displayed on the display screen 104 as it is. When the open / close determination unit 153 determines the closed state, the display image of the control result in the first display control unit 1593 is rotated by 180 ° and displayed on the display screen 104.

  Next, the operation of the mobile phone 10 having the above-described configuration will be described focusing on the navigation function related to the present invention.

FIG. 10 is a flowchart illustrating a flow of processing related to acquisition of position information and map information in the map information acquisition unit 1591.
Steps ST101 to ST103 indicate processing of the map information acquisition unit 1591, and steps ST201 to ST203 indicate processing of the server device 40.

  First, the map information acquisition unit 1591 causes the GPS reception unit 151 to receive a signal from the GPS satellite 20, and acquires information related to the received signal (step ST101). Next, the acquired information is transmitted from the communication processing unit 150 to the server device 40 (step ST102).

Information transmitted from the communication processing unit 150 is received by the base station 30 and transmitted to the server device 40 via the communication network.
The server device receives this information as a processing request from the mobile phone 10 (step ST201), and calculates the geographical position of the mobile phone 10 based on the received information. Further, based on the calculated position, the map information around the mobile phone 10 is searched from the database (step ST202). Then, the calculated position information and searched map information are returned from the communication network to the mobile phone 10 via the base station 30 as a processing result in response to the processing request (step ST203).

  The map information acquisition unit 1591 waits for a reply from the server device 40 that responds to the information transmitted in step ST101. When the communication processing unit 150 receives this reply, the map information acquisition unit 1591 acquires position information and map information included therein. (Step ST103).

  FIG. 11 is a flowchart illustrating the flow of processing in the first display control unit 1593.

  The first display control unit 1593 determines whether the movable mechanism 103 is in the open state or the closed state based on the determination result S4 of the open / close determination unit 153 (step ST301).

When it is determined to be in the open state, the first display control unit 1593 displays the map information and position information acquired by the map information acquisition unit 1591, the information of the symbol image generated by the symbol image generation unit 1592, and the direction Image data to be displayed on the display screen 104 of the display unit 155 is generated according to the direction information S3 detected by the detection unit 158 (step ST303).
That is, the first display control unit 1593 has the orientation on the display screen 104 such that the orientation of the reference direction Z detected by the orientation detection unit 158 and the orientation of the map in the reference direction A of the display screen 104 are equal. Generating image data that causes the display screen 104 to display a controlled map, a mark indicating the position of the current location on the map, and a symbol image such as a character arranged with the reference direction A as the upper direction of the display screen 104 To do.

On the other hand, if it is determined to be in the closed state, the first display control unit 1593 inverts the detection result of the azimuth in the azimuth detection unit 158 by 180 ° (step ST302), and uses the corrected azimuth information as described above. In step ST303, the image data is generated.
Thereby, when the images of the display screen 104 in the open state and the closed state are compared, the directions of the map and the symbols with respect to the reference direction A on the display screen 104 are the same in both states. In other words, when the image data generated by the first display control unit 1593 is displayed on the display screen 104 in the closed state, the orientation of the display image viewed from the user includes the map and the symbols. As the body 102 rotates, it reverses 180 °, but the orientation of the map and symbols relative to the reference direction A is not different from the open state.
Thereafter, it is determined whether to end or continue the processing mode for displaying the navigation map described above (step ST304), and when the continuation is instructed, the processing of steps ST301 to ST303 is repeated.

  FIG. 12 is a flowchart illustrating the flow of processing in the second display control unit 1594.

The second display control unit 1594 determines whether the movable mechanism 103 is in an open state or a closed state based on the determination result S4 of the open / close determination unit 153 (step ST401).
If it is determined to be in the open state, the image data generated in the first display control unit 1593 is output to the display unit 155 and the image is displayed on the display screen 104 (step ST403). In the closed state, the image data generated in the first display control unit 1593 is converted so that the display image in the open state rotates 180 ° on the display screen 104 (step ST402) and output to the display unit 155. (Step ST403).
Thereafter, it is determined whether to end or continue the processing mode for displaying the navigation map described above (step ST404), and when the continuation is instructed, the processing of steps ST401 to ST403 is repeated.

As described above, according to the first embodiment of the present invention, the reference direction of the azimuth detection in the azimuth detecting unit 158 is the first casing 101 and the second casing that are connected via the movable mechanism 103. The body 102 is set on the second housing 102 in which the display unit 104 is held. When the positional relationship between the first housing 101 and the second housing 102 changes due to the change of the operation style and the direction of the display screen 104 with respect to the user changes, the movable mechanism 103 determined by the open / close determination unit 153. The direction detection result in the direction detection unit 158 is corrected according to the operating state (open state or closed state), and the map orientation on the display screen 104 is corrected according to this correction. Furthermore, a predetermined rotation process according to the determination result of the open / close determination unit 153 is applied to the display image after correction related to the map orientation, so that the image on the display screen 104 has an appropriate direction according to the operation style. It is controlled to face.
That is, in the structure of the present embodiment, when the direction of the display screen 104 changes due to the change of the operation style, the geographic direction of the reference direction of the direction detection changes in conjunction with this, and therefore the direction detection result changes. Accordingly, the orientation of the map on the display screen 104 changes. Therefore, the change in the direction of the map due to the change in the operation style includes a change in the direction of the map on the display screen 104 as well as a change in the direction of the display screen 104 with respect to the user. On the other hand, the direction change of the symbol image due to the change of the operation style is only the direction change of the display screen 104 with respect to the user. Therefore, by correcting the direction detection result as described above, the map direction is corrected, and then the entire display image including the map and the symbol image is subjected to a rotation process to obtain the map and the symbol image. It becomes possible to give different angles of rotation, and both can be directed in an appropriate direction according to the operation style.

  In addition, the orientation detection result is corrected based on the operating state of the movable mechanism 103, and the map is rotated by controlling the orientation of the map according to the corrected orientation. In addition to the normal process for controlling, there is no need to provide a special process for controlling the orientation of the map in accordance with the operating state of the movable mechanism 103, and the process is not complicated.

  Furthermore, the program of the second display control unit 1594 that performs the rotation process on the display image according to the operating state of the movable mechanism has the same two-case structure as that of the present embodiment and has a navigation function using a map. It is possible to easily divert similar programs of other devices that do not exist. Thereby, the burden of design work can be reduced and the occurrence of software bugs can be reduced.

Further, according to the present embodiment, in two operating states (open state and closed state) of the movable mechanism 103, the direction detection is performed when the angle formed between the display screen 104 of the display unit 155 and the ground plane is kept constant. The angle formed by the reference direction Z and the ground plane is equal to each other in these two operating states. The direction detection unit 158 detects the direction when the reference direction Z and the ground plane have a predetermined angle (for example, 45 °) as the geographical direction of the reference direction Z in these two operating states.
Normally, the user tries to keep the direction of the line of sight with respect to the display screen 104 constant, and therefore the inclination angle formed by the reference direction Z for detecting the direction and the ground plane becomes substantially constant regardless of the operating state of the movable mechanism 103. Therefore, since it is possible to calculate an azimuth angle that takes into account a common tilt angle in these two operating states, the processing can be simplified as compared with the case where the tilt angle differs for each operating state.

In addition, magnetic generation sources such as speakers 106 and 107 are arranged at opposite ends of the second casing 102. The magnetism detection unit 1581 is an area having a magnetic field intensity capable of detecting geomagnetism even in the magnetic field formation area by the magnetism generation source, from these magnetism generation sources arranged at the end of the second casing 102. It is arranged in a region near the center of the second casing 102 that is separated.
Therefore, the influence of magnetism from these magnetism generation sources on the magnetism detection unit 1581 is mitigated, and normal detection of geomagnetism becomes possible.

<Second Embodiment>
Next, a second embodiment of the present invention will be described.
In the second embodiment, processing different from that of the first embodiment described above is performed as processing related to display control during navigation.

FIG. 13 is a block diagram illustrating an example of a functional configuration of a portion of a program related to display control during navigation in the mobile phone according to the second embodiment.
The program illustrated in FIG. 13 includes a map information acquisition unit 1591, a symbol image generation unit 1592, a first display control unit 1593A, and a second display control unit 1594. However, the same reference numerals in FIG. 8 and FIG. 13 indicate the same components.
The first display control unit 1593A is an embodiment of the first display control means of the second invention.
Second display control unit 1594A is an embodiment of the second display control means of the second invention.

  The second display control unit 1594A changes the arrangement of the symbol image generated by the symbol image generation unit 1592 on the display screen 104 according to the determination result of the open / close determination unit 153. That is, when the open / close determination unit 153 determines the open state, the symbol image arrangement is set so that the reference direction A of the display screen is the upward direction, and when the close state is determined, the reference direction A The arrangement of the symbol images is set so that is in the downward direction.

The first display control unit 1593A controls the orientation of the map on the display screen 104 of the display unit 155 according to the detection result of the azimuth detection unit 158.
That is, as shown in FIGS. 14A and 14B, the first display control unit 1593A includes the azimuth of the reference direction Z detected by the azimuth detection unit 158 in both the open state and the closed state. The orientation of the map on the display screen 104 is controlled so that the orientation of the map in the reference direction A on the display screen 104 is equal.
As a result, the reference direction Z for detecting the azimuth coincides with the azimuth on the display screen, so that a map facing the correct direction is displayed on the display screen 104 in any operating state.

  In addition to the above-described map, the first display control unit 1592A displays a mark indicating the geographical position of the current location acquired by the map information acquisition unit 1591 on the map, and the second display control unit 1594A. The symbol image in which the arrangement is set is displayed.

  The cellular phone according to the second embodiment having the above-described configuration will be described focusing on portions related to display control different from the first embodiment.

  FIG. 15 is a flowchart illustrating the flow of processing in the second display control unit 1594A.

Second display control unit 1594 determines whether movable mechanism 103 is in the open state or the closed state based on determination result S4 of open / close determination unit 153 (step ST501). If it is determined to be in the open state, the arrangement of the symbol images is set with the reference direction A of the display screen as the upward direction (step ST502), and if it is determined to be in the closed state, this reference direction A is set to the downward direction. The arrangement of the symbol image is set (step ST503).
Thereafter, it is determined whether to end or continue the processing mode for displaying the map for navigation described above (step ST504), and when the continuation is instructed, the processing of steps ST301 to ST303 is repeated.

FIG. 16 is a flowchart illustrating the flow of processing in the first display control unit 1593A.
The first display control unit 1593A includes map information and position information acquired by the map information acquisition unit 1591, information on the symbol image whose arrangement on the display screen 104 is set by the second display control unit 1594A, and an orientation. Image data to be displayed on the display screen 104 of the display unit 155 is generated according to the direction information S3 detected by the detection unit 158 (step ST601).
That is, the first display control unit 1593A has the orientation on the display screen 104 so that the orientation of the reference direction Z detected by the orientation detection unit 158 is equal to the orientation of the map in the reference direction A of the display screen 104. A controlled map, a mark indicating the position of the current location on the map, characters set in the second display control unit 1594A so that the reference direction A is the upper or lower direction of the display screen 104, etc. Image data to be displayed on the display screen 104 is generated.

As described above, according to the second embodiment of the present invention, on the display screen 104, the arrangement (direction, position, etc.) of the symbol image is changed to an appropriate state in accordance with the operating state of the movable mechanism 103. As for the map orientation control method in FIG. 2, the map and symbol orientation displayed to the user can be set to an appropriate state according to the operation style by making the same regardless of the operating state of the movable mechanism 103. .
In addition, the processing can be simplified as compared with the case where the inclination angle differs depending on the operating state of the movable mechanism, and the influence of magnetism from the magnetic source of the second housing 102 on the magnetic detection unit 1581 is reduced. This is the same as in the first embodiment described above.

  The present invention is not limited to the above-described embodiment, and various modifications can be made.

For example, in the above-described embodiment, the tilt angle data set in advance corresponding to the operating state of the movable mechanism 103 is used for calculating the azimuth as the information regarding the tilt angle. For example, as shown in FIG. In addition, an inclination angle detection unit 1583 (corresponding to the angle detection means of the present invention) that detects an inclination angle based on the direction of gravity acceleration or the like may be provided, and the result may be used for detecting the azimuth angle. That is, the azimuth calculation unit 1582 may be configured to calculate the azimuth according to the geomagnetism detected by the geomagnetism detection unit 1581 and the tilt angle detected by the tilt angle detection unit 1583.
Thereby, since a more accurate inclination angle is obtained, it is possible to improve the direction detection accuracy. If the two-dimensional tilt angle is detected by the tilt angle detection unit 1583, the twist angle information in addition to the tilt angle can be used to calculate the azimuth angle. It becomes possible to do.

  In the above-described embodiment, in the two operating states (open state and closed state) of the movable mechanism 103, when the angle formed between the display screen 104 of the display unit 155 and the ground plane is kept constant, the reference direction for azimuth detection An example in which the angle between Z and the ground plane is equal to each other in these two operating states is shown, but the present invention is not limited to this.

  For example, in an operating state in which the inclination of the second casing 102 with respect to the first casing 101 is an intermediate position between the open state and the closed state, the reference direction A and the ground plane are substantially parallel, that is, the inclination angle is It becomes zero. Since this operating state has different inclination angles from the open state and the closed state, an error occurs if the azimuth angle is calculated with the same inclination angle.

In this way, when the angle between the display screen and the ground plane is kept constant, the movable mechanism has multiple operating states in which the inclination angle between the reference direction for azimuth detection and the ground plane are different from each other. In addition, the present invention is applicable.
For example, the azimuth detection unit 158 detects the geographical azimuth assuming that the inclination angle of the reference direction Z with respect to the ground plane is a predetermined angle corresponding to the determination result of the open / close determination unit 153. The information on the tilt angle in this case is stored in advance in the storage unit 152 as a data table, for example. When the direction is detected, the control unit 159 reads information on the inclination angle associated with the determination result of the open / close determination unit 153 from the data table and passes the information to the direction detection unit 158. The direction detection unit 158 Based on the information on the tilt angle acquired from the unit 159, the direction is detected.
With such a configuration, it becomes possible to detect the azimuth based on information on an appropriate inclination angle according to the operating state of the movable mechanism 103, and the azimuth detection accuracy can be improved.

  In the embodiment described above, an orthogonal coordinate system is used as a reference coordinate system for geomagnetism detection. However, the present invention is not limited to this. For example, even if a coordinate system in which coordinate axes are oblique is used as the reference coordinate system, the calculation of the azimuth angle is performed. Is possible.

In the above-described embodiment, an example in which the processing of the control unit 159 is processed by a computer based on a program has been described. However, at least a part of these processing can be executed by hardware.
Conversely, at least a part of processing in other units other than the control unit 159 may be executed by the computer of the control unit 159. For example, the processing of the azimuth calculation unit 1582 in the azimuth detection unit 158 may be executed by a computer of the control unit 159.

It is a block diagram which shows the structural example of the system for acquiring the information of geographical position and map in the mobile telephone which concerns on embodiment of this invention. It is the figure which illustrated an example of the external appearance in the open state of a mobile telephone. It is the figure which illustrated an example of the external appearance in the closed state of a mobile telephone. It is a block diagram which shows the structural example of the mobile telephone which concerns on embodiment of this invention. It is a block diagram which shows the structural example of an azimuth | direction detection part. It is the figure which illustrated the example of arrangement | positioning of a geomagnetism detection part. It is a figure for demonstrating the calculation method of an azimuth. It is a block diagram which shows an example of a functional structure of the program of the part relevant to the display control at the time of navigation in the mobile telephone which concerns on 1st Embodiment. It is the 1st figure which illustrated an example of the relation between the reference direction of direction detection, and the reference direction on a display screen. It is the flowchart which illustrated the flow of the process regarding acquisition of a positional information and map information. It is the flowchart which illustrated the flow of the process in the 1st display control part which concerns on 1st Embodiment. It is the flowchart which illustrated the flow of the process in the 2nd display control part which concerns on 1st Embodiment. It is a block diagram which shows an example of a functional structure of the program of the part relevant to the display control at the time of navigation in the mobile telephone which concerns on 2nd Embodiment. It is the 2nd figure which illustrated an example of the relation between the reference direction of direction detection, and the reference direction on a display screen. It is the flowchart which illustrated the flow of the process in the 1st display control part which concerns on 2nd Embodiment. It is the flowchart which illustrated the flow of the process in the 2nd display control part which concerns on 2nd Embodiment. It is a block diagram which shows the other structural example of an azimuth | direction detection part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Mobile phone, 20 ... GPS satellite, 30 ... Base station, 40 ... Server apparatus, 102 ... 1st housing | casing, 102 ... 2nd housing | casing, 103 ... Movable mechanism, 104 ... Display screen, 105, 125 ... Camera lens 106, 107 ... Speaker hole, 109 ... Microphone hole, 110, 120 ... Operation key, 126 ... Flash lamp, 150 ... Communication processing unit, 151 ... GPS reception unit, 152 ... Storage unit, 153 ... Open / close determining unit, 154... Key input unit, 155... Display unit, 156... Voice processing unit, 157... Imaging unit, 158 .. direction detecting unit, 159 ... control unit, 161, 162, 164 ... speaker, 163. ... Geomagnetism detection unit, 1582 ... Azimuth angle calculation unit, 1583 ... Inclination angle detection unit, 1591 ... Map information acquisition unit, 1592 ... Symbol image generation unit, 1593, 1593A ... First Shows the control unit, 1594,1594A ... the second of the display control unit

Claims (10)

An information display device that displays information on the position and orientation of the current location using a map,
A first housing;
A second housing that includes at least display means for displaying the map and is rotatably connected to the first housing around an axis perpendicular to the display screen of the display means via a movable mechanism; Body,
An operating state determination means for determining a plurality of rotation states of the second casing relative to the first casing via the movable mechanism;
Azimuth detecting means for detecting the geographical azimuth of the first reference direction set in the second casing;
Has been in the plurality of rotational state determined by the operation state judgment means, the direction with respect to the first housing by correcting the first reference direction so as to be constant, of the corrected the first reference direction geographic First display control means for controlling the orientation of the map so that the target orientation and the orientation of the map in the second reference direction set in the display means are equal;
In the plurality of rotation states determined by the operating state determining means, the display means controls the first display control means so that the display direction of the display means relative to the first housing is constant, and the display means displays Second display control means for rotating the displayed image including the map,
An information display device comprising: An information display device that uses a map to display current location and orientation information and additional information,
A first housing;
A first display unit including at least a display unit configured to display the map, and rotatably coupled to the first casing about an axis perpendicular to a display screen of the display unit via a movable mechanism; A second housing coupled to the housing;
Azimuth detecting means for detecting the geographical azimuth of the first reference direction set in the second housing;
An operating state determination means for determining a plurality of rotation states of the second casing relative to the first casing via the movable mechanism;
Has been in the plurality of rotational state determined by the operation state judgment means, the direction with respect to the first housing by correcting the first reference direction so as to be constant, of the corrected the first reference direction geographic First display control means for controlling the orientation of the map so that the target orientation and the orientation of the map in the second reference direction set in the display means are equal;
In the plurality of rotation states determined by the operating state determining means, the display means controls the first display control means so that the display direction of the display means relative to the first housing is constant, and the display means displays Second display control means for changing the arrangement of the additional information displayed together with the image of the map,
An information display device comprising: The movable mechanism has a plurality of operating states in which the angle formed between the first reference direction and the ground plane is equal to each other when the angle formed between the display screen of the display means and the ground plane is kept constant. Have
The azimuth detecting means detects the geographical azimuth as the first reference direction and the ground plane have a predetermined angle in the plurality of operating states.
The information display device according to claim 1 or 2. The azimuth detecting means is
Geomagnetism detecting means for detecting geomagnetism in a plurality of predetermined directions parallel to each coordinate axis of the coordinate system set on the second casing;
An azimuth angle calculating means for calculating an azimuth angle on the ground plane in the plurality of operating states based on the geomagnetism in the plurality of directions detected by the geomagnetism detecting means and information relating to the predetermined angle; including,
The information display device according to claim 3. Having a storage unit,
The movable mechanism connects the first casing and the second casing so that the inclination angle formed between the display screen of the display unit and the ground plane is different in the plurality of rotation states,
The storage unit stores information on a tilt angle set in advance corresponding to the plurality of operating states,
The azimuth detecting unit includes a display screen and a ground plane of the display unit obtained by comparing the plurality of rotation states determined by the operation state determining unit with the information on the tilt angle stored in the storage unit. The geographical orientation of the first reference direction is detected in consideration of the inclination angle information formed by
Claim 1 or information display apparatus according to 2. The azimuth detecting means is
Geomagnetism detecting means for detecting geomagnetism in a plurality of predetermined directions parallel to each coordinate axis of the coordinate system set on the second casing;
It is obtained by comparing the geomagnetism information in the plurality of directions detected by the geomagnetism detection means, the plurality of rotation states determined by the operation state determination means, and the inclination angle information stored in the storage unit. Azimuth angle calculating means for calculating the azimuth angle on the horizontal plane based on the information on the inclination angle formed between the display screen of the notation display means and the horizontal plane,
The information display device according to claim 5. The azimuth detecting means includes angle detecting means for detecting an angle formed by the first reference direction and the ground plane, and detects the geographical azimuth according to a detection angle of the angle detecting means.
The information display device according to claim 1 or 2. The azimuth detecting means is
Angle detecting means for detecting an angle formed by the first reference direction and the ground plane;
Geomagnetism detecting means for detecting geomagnetism in a plurality of predetermined directions parallel to each coordinate axis of the coordinate system set on the second casing;
Azimuth angle calculating means for calculating an azimuth angle on the ground plane according to the geomagnetism in the plurality of directions detected by the geomagnetism detection means and the detection angle of the angle detection means,
The information display device according to claim 7. Each having a plurality of sound conversion means arranged at opposite ends of the second casing and performing conversion from an electric signal to sound or conversion from sound to electric signal using a magnet;
The geomagnetism detection means is disposed between the voice conversion means.
The information display device according to claim 4, 6, or 8. A first housing;
A first display unit including a display unit configured to be movable between a plurality of operating states in which one surface of the first casing and the display screen of the display unit face substantially the same direction via a movable mechanism; A connected second housing;
An operating state determining means for determining a plurality of operating states of the second casing relative to the first casing by movement through the movable mechanism;
An azimuth detecting means provided in the second casing for detecting a geographical direction in a certain direction with respect to the first casing in the plurality of operating states;
Display control means for displaying a map on the display means based on the geographical orientation detected by the orientation detection means so that the display orientation with respect to the first housing is constant in the plurality of operating states;
An information display device comprising:

Images