JP2010004381A - Personal digital assistant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a personal digital assistant capable of comprehending the moving amount of a field of view suited to put an object back into a display screen when the object gets out of the display screen, and thereby easily putting the object back into the display screen. <P>SOLUTION: The personal digital assistant includes an imaging means 1, a display means 2 displaying an image imaged by the imaging means 1, an acquiring means 3 acquiring position information of the object, a follow-up control means 4 making the acquiring means 3 follow-up position information acquisition, a calculating means 5 calculating a positional relation of the object relative to a display range 2<SB>1</SB>of the display means 2 using the acquired position information of the object, and a display control means 6 changing in real time a mark 7 guiding the moving amount and moving direction of the display means 2 needed to display again the object in the display range 2<SB>1</SB>when the object gets out of the display range 2<SB>1</SB>according to a change in the positional relation of the object relative to the display range 2<SB>1</SB>calculated by the calculating means 5, thereby displaying the object in a predetermined position in the display range 2<SB>1</SB>. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable information terminal, and more particularly to a portable information terminal that displays an image of an object such as an animal or a plant.

2. Description of the Related Art In recent years, a portable information terminal has generally been provided with an imaging unit and can display an image of an object captured by the imaging unit on a display screen in real time.
By the way, for example, when observing an object that freely moves in a vast area, such as multiple types of animals released in a safari park, the position of the object in the observation field of view changes, and the object moves from the display screen. Easy to come off. However, once the object is removed from the display screen, it is not easy to display it again on the display screen even if the same observation field is subsequently observed.

However, conventionally, for example, Japanese Patent Application Laid-Open No. 2004-133867 proposes an imaging apparatus that can return an object that has been removed from the display screen into the display screen.
JP 2007-129480 A

  An imaging apparatus described in Patent Literature 1 includes an imaging unit, a display unit that displays a moving image captured by the imaging unit, a tracking unit that tracks the movement of an object in the moving image, and an imaging target that is being tracked. A moving direction guide means for displaying a guide such as an arrow for guiding the moving direction of the photographing target on the screen when the display means moves off the screen is provided.

  However, as in the imaging device described in Patent Document 1, when the target object is out of the display range, the observer only needs to indicate the moving direction of the target object on the screen via a guide such as an arrow. It is impossible to grasp the amount of movement of the visual field suitable for returning an object to the screen. For this reason, it is difficult to find an object on the contrary, for example, by swinging the imaging device too much in the direction of the guide. Therefore, the observer must move the eyes and face, remove the line of sight from the object imaged on the display screen, observe the actual observation field with the naked eye, and find the object. Work becomes complicated.

  The present invention has been made in view of the above problems, and even when the object is off the display screen, the amount of visual field movement suitable for returning the object to the display screen can be grasped, and the display screen can be easily An object of the present invention is to provide a portable information terminal capable of returning an object to the mobile phone.

  To achieve the above object, a portable information terminal according to the present invention includes an imaging unit, a display unit that displays an image captured through the imaging unit, a position information acquisition unit that acquires position information of an object, The following control means for following the acquisition of the position information of the object by the position information acquisition means, and the display means for the object using the position information of the object acquired through the position information acquisition means Relative positional relationship calculating means for calculating a relative positional relationship with the display range of the display means, and when the target object is out of the display range of the display means, the target object is redisplayed in the display range of the display means. Relative to the display range of the display means of the object calculated via the relative positional relationship calculation means, a re-display guide sign for guiding the movement amount and direction of the display means necessary for the display means Positional change Varied in real time according is characterized in that it has a re-display information sign display control means, to be displayed on a predetermined position in the display range of the display unit.

  Moreover, in the portable information terminal of the present invention, the storage unit stores the position information of the object acquired through the position information acquisition unit, and the object stored through the storage unit. Position information prediction means for predicting position information of the target object based on a history of position information, and the relative positional relationship calculation means is position information of the target object predicted via the position information prediction means. It is preferable to calculate the relative positional relationship of the object with the display range of the display means.

  Further, in the portable information terminal of the present invention, the relative positional relationship calculation means calculates a relative distance and direction between the object and a portion closest to the object in the display range of the display means, The re-display guide sign display control means is configured to calculate the re-display guide sign as a part closest to the target in the display range of the target and the target calculated by the relative positional relationship calculating means. It is preferable to change it in real time according to changes in the relative distance and direction, and display it at a predetermined position in the display range of the display means.

  Further, in the portable information terminal of the present invention, the re-display guide sign is the closest to the object and the object in the display range of the display means when the object is out of the display range of the display means. It is preferable that the arrow be deformed into a length and a direction corresponding to a relative distance and direction from a close part.

  In the portable information terminal of the present invention, it is preferable that the arrow indicates a direction in which the object is out of a display range of the display unit.

  In the portable information terminal of the present invention, it is preferable that the arrow indicates a direction opposite to a direction in which the object is out of a display range of the display unit.

  In the portable information terminal of the present invention, it is preferable that the re-display guide sign display control means displays the re-display guide sign in the vicinity of the portion closest to the object in the display range of the display means. .

  Further, in the portable information terminal of the present invention, the re-display guide sign display control means displays the re-display guide sign at an end portion on the opposite side of the portion closest to the object in the display range of the display means. It is preferable to display in the vicinity.

  Further, in the portable information terminal of the present invention, the display unit further includes a display unit based on a relative positional relationship between the display unit and the display range of the display unit calculated through the relative positional relationship calculation unit. Virtual display range calculation means for calculating a virtual display range including the object with a display angle of view having the same size as the display range, and the re-display guide sign is calculated via the virtual display range calculation means. A frame indicating an outline of a portion of the virtual display range that overlaps the display range of the display unit, and the re-display guide sign display control unit is configured such that the object is out of the display range of the display unit and the virtual display range. When the virtual display range calculated via the calculation means and the display range of the display means change in a partially overlapping state, the re-display guide sign is changed in real time to change the display means Preferably, to be displayed at the predetermined position shown range.

  Further, in the portable information terminal of the present invention, the display unit further includes a display unit based on a relative positional relationship between the display unit and the display range of the display unit calculated through the relative positional relationship calculation unit. Virtual display range calculation means for calculating a virtual display range including the object at a display angle of view that is the same size as the display range, and the object is out of the display range of the display means, and the virtual display range calculation means A frame indicating the outline of the portion of the virtual display range that overlaps the display range of the display means when the virtual display range calculated via the display means and the display range of the display means change in a partially overlapping state It is preferable to have frame display control means for changing the display in real time and displaying it in the display range of the display means.

  In the portable information terminal of the present invention, it is preferable that the position information acquisition unit acquires the position of the object with reference to the display range of the display unit.

  In the portable information terminal of the present invention, it is preferable that the position information acquisition unit acquires the position of the object inside the display range of the display unit.

  In the portable information terminal of the present invention, it is preferable that the position information acquisition unit acquires the position of the object using GPS.

  In the portable information terminal of the present invention, it is preferable that the portable information terminal further includes a selection unit that allows an observer to select a desired object from an image displayed in the display range of the display unit.

  Further, in the portable information terminal of the present invention, the re-display guide sign display control means has a display range of the display means according to the accuracy of the position information of the object acquired through the position information acquisition means. It is preferable to change the brightness of the re-display guide sign displayed on the screen.

  Further, in the portable information terminal of the present invention, the re-display guide sign display control unit is configured to change the accuracy of the position information of the target object predicted through the position information prediction unit. It is preferable to change the brightness of the re-display guide sign displayed in the display range.

  In the portable information terminal of the present invention, the re-display guide sign further includes the object and the object in the display range of the display means when the object is out of the display range of the display means. It is preferable to have a number indicating the relative distance to the nearest part.

  In the portable information terminal of the present invention, the re-display guide sign display control means is further configured to be relative to the display range of the display means calculated by the relative positional relationship calculation means. It is preferable to change the color of the re-display guide sign in real time according to a change in the positional relationship.

  In the portable information terminal of the present invention, the portable information terminal further includes a speaker, and the re-display guide sign further includes the object and the display unit when the object is out of the display range of the display unit. The display guidance sign display control means is further calculated via the relative positional relationship calculation means. The sound is displayed according to the relative distance to the part closest to the object in the display range. It is preferable that the wavelength band or intensity of the sound of the re-displaying guide sign is changed according to the change in the relative positional relationship of the object with the display range of the display means, and output from the speaker.

  ADVANTAGE OF THE INVENTION According to this invention, even if a target object remove | deviates from a display screen, it can grasp | ascertain the movement amount of the visual field suitable for returning a target object in a display screen, and can return a target object in a display screen easily. A portable information terminal is obtained.

  FIG. 1 is an explanatory diagram showing an example of a schematic configuration of the portable information terminal of the present invention, and FIG. 2 is a flowchart showing operations and processing procedures using the portable information terminal of FIG. 3 is an explanatory view showing a display example of a re-display guide sign on the display screen of the portable information terminal of FIG. 1, and (a) is a view showing a state when a predetermined object is located in the display screen. (b) is a diagram showing the display status of the re-display guide sign when the specified object is removed from the display screen. (c) is the re-display when the object is far away from the display screen compared to (b). It is a figure which shows the display state of a guidance sign.

  As shown in FIG. 1, the portable information terminal of the present invention includes an image pickup means 1, a display means 2, a position information acquisition means 3, a follow-up control means 4, a relative positional relationship calculation means 5, and a re-display guide. A sign display control means 6 is provided. In addition, 8 is a control means.

Display means 2 is provided with a display screen 2 _1.
Display screen 2 _1, under the control command from the control unit 8 has a function of displaying an image captured through the imaging device 1 in real time.
Imaging means 1 is provided on the back side of the display screen 2 _1.

The position information acquisition unit 3 acquires position information of the object. Position information of the object to be acquired, for example, the display range of the display unit 2 according to (here, a display screen) position sensor 2 ₁ position of the object relative to the detection, or the display unit 2 using the captured image carried out by the acquisition of the position by the display range (display screen) for calculating the position of the second object relative to the _1, or GPS. Further, a sensor that senses the orientation of the apparatus, a change in the position of the observer, and the like may be provided, and the relative position information of the object may be corrected using information sensed by those sensors. .

  The tracking control means 4 tracks the object following the movement of the object or the fluctuation of the imaging field within the range where the position information acquiring means 3 can acquire the position information of the object, and the object by the position information acquiring means 3 The acquisition of the position information of the object is followed.

The relative positional relationship calculating means 5 uses the position information of the acquired object through the position information obtaining unit 3, relative positions of the display range (display screen) 2 ₁ display means 2 of the object Calculate the relationship. More specifically, for example, the display range (display screen) of the object and the display unit 2 in 2 _1, to calculate the relative distance and direction to the nearest site object.

Redisplay information sign display control means 6, when the object is out of the (display range) 2 ₁ display unit 2, in order to redisplay the object in the display range (display screen) 2 ₁ display means 2 The display range (display screen) 2 ₁ of the display unit 2 of the target object, which is calculated via the relative positional relationship calculation unit 5, is displayed by using the re-display guide sign 7 for guiding the necessary movement amount and direction of the display unit 2. varied in real time according to the change in the relative position between the display range (display screen) of the display unit 2 is displayed at the predetermined position 2 _1.

As shown in FIG. 3B and FIG. 3C, an arrow is used for the re-display guide sign 7. This arrow when the object is out of the display range (display screen) 2 ₁ display means 2, the object (here, hippopotamus A) and the display range (display screen) of the display means 2 2 objects in ₁ It is comprised so that it may deform | transform into the length and direction according to the relative distance and direction with the site | part nearest to.
Then, in the example of FIG. 3 (b), FIG. 3 (c), the the arrow object (Hippo A) indicates the direction out of the display range (display screen) 2 ₁ display unit 2. Note that this arrow object (Hippo A) is the display range (display screen) of the display unit 2 from the direction that deviates from 2 ₁ may indicate the opposite direction.

Further, in the example of FIG. 3 (b), FIG. 3 (c), the re-display information sign display control means 6, the display range of the display unit 2 to redisplay signpost 7 (display screen) 2 object in ₁ (birch closest site (here the a), being displayed in the vicinity of the lower left corner) of the display screen 2 _1. Incidentally, redisplay information sign display control means 6, the sites closest to the display range of the display unit 2 to redisplay signpost 7 (display screen) 2 object in ₁ (birch A) (wherein, in the display screen 2 ₁ end opposite to the corner of the lower left side) (in this case, may be displayed in the vicinity of the corners of the upper right) of the display screen 2 _1.

The control means 8 is a control circuit provided with a microcomputer, and controls the operation of the portable information terminal as follows.
When the observer points the imaging unit 1 toward a predetermined observation visual field, the imaging unit 1 is caused to image the predetermined observation visual field. Then, the display range (display screen) of the display unit 2 to 2 ₁ to display the captured image in real time. Further, the tracking control means 4 is made to follow the acquisition of the position information of the object by the position information acquiring means 3. Then, the relative positional relationship calculating means 5, using the position information of the acquired object via the position information obtaining unit 3, the display range (display screen) of the display means 2 of the object 2 ₁ relative of To calculate the correct positional relationship. Further, the object monitors whether out of the display range (display screen) 2 ₁ display unit 2. When the object is out of the display range (display screen) 2 ₁ display unit 2, the re-display information sign display control means 6, the display range (display screen) of the display means 2 of the object to 2 ₁ re The display range (display) of the object display means 2 calculated via the relative positional relationship calculation means 5 is displayed on the re-display guide sign 7 for guiding the movement amount and direction of the display means 2 necessary for display. varied in real time in response to changes in the relative positions of the screen) 2 _1, so as to be displayed on a predetermined position in the display range (display screen) 2 ₁ display unit 2.

Operations and processing procedures when observing a predetermined visual field using the portable information terminal of the present invention configured as described above, and display contents on the display screen will be described with reference to FIGS.
Here, the case where the hippopotamus A which inhabits a vast safari park is observed is demonstrated.
When the observer directs the imaging means 1 to a predetermined observation visual field, the imaging means 1 images an observation visual field in a predetermined range (step S11). The imaged image is displayed in real time on the display screen 2 ₁ (step S12). Here, the field of view on the display screen 2 ₁ including cover A as shown in FIG. 3 (a) is assumed to be displayed. Next, the position information acquisition unit 3 acquires the position information of the object (cover A) by the tracking control of the tracking control unit 4 (step S13). Next, the relative positional relationship calculation means 5 uses the position information of the object (cover A) acquired via the position information acquisition means 3, and the display range 2 ₁ of the display means 2 for the object (cover A). Is calculated (step S14). Object when (Hippo A) is not out of the display range (display screen) _{2 1} display unit 2 repeats the processes of steps S11~S14 described above. Object (Hippo A) is moved (or observer moves the observation visual field of the portable information terminal) by, when the object (Hippo A) is outside the display range (display screen) 2 ₁ display means 2 It is redisplayed information sign display control means 6, to guide the movement amount and direction of the display unit 2 required to re-display object (the cover a) in the display range (display screen) 2 ₁ display means 2 relative redisplay signpost 7 (arrows in this case), and the display range (display screen) 2 ₁ display means 2 of the relative positional relationship calculating means 5 an object to be calculated via (Hippo a) for varied in real time according to a change in Do positional relationship, and displays a predetermined position in the display range (display screen) 2 ₁ display unit 2 (step S16).

For example, the object (Hippo A) is, when you are in a position slightly apart from the display screen 2 _1, as shown in FIG. 3 (b), the redisplay signpost (arrow) 7, most objects in the display screen 2 ₁ a site close to the object (Hippo a), toward an object (birch a), the object is displayed in the (Hippo a) and the length of the predetermined length corresponding to the distance between the display screen 2 _1. Here, the object (Hippo A) is, when in a position further away in the same direction from the display screen 2 _1, as shown in FIG. 3 (c), the length of the redisplay signpost (arrow) 7 is long Become. On the other hand, according gradually moved in the direction of the display screen 2 ₁ reappears signpost (arrow) to 7, the object distance (Hippo A) and the display screen 2 ₁ shrinks. At this time, the length of the re-display guide sign (arrow) 7 is shortened. When moved to a position where the display screen 2 ₁ objects (cover A) is displayed on the display screen 2 _1, redisplay signpost (arrow) 7 becomes invisible disappear from the display screen 2 _1. Therefore, the observer, the display screen 2 _1, in the direction of the redisplay signpost (arrow) 7, display by redisplayed signpost (arrow) 7 is moved until no visible object (the cover A) it is possible to reappear on the screen 2 _1. Moreover, when moving the display screen 2 _1, observer, by monitoring the change in the redisplay signpost (arrow) 7 size, the object too is moved the display screen 2 ₁ in the moving direction (Hippo it can be prevented from accidentally disconnect a) from the display screen 2 _1.

  Thus, according to the portable information terminal of the present invention, the observer can grasp how far the object is in which direction from the display range, and can redisplay the object in the display range. It becomes easy.

By the way, when the target object is out of the range in which the tracking control means 5 can follow, the current position of the target object cannot be grasped. Even in such a case, it is desirable to be able to re-display the object on the display area 2 _1.
Therefore, in the portable information terminal of the present invention, the storage means (not shown in FIG. 1) for storing the position information of the object acquired via the position information acquisition means 3 and the storage means are further stored. Based on the position information history of the object, it has position information predicting means (not shown in FIG. 1) for predicting the position information of the object, and the relative positional relationship calculating means is predicted via the position information predicting means 3. was based on the position information of the object, the display range (display screen) of the display means 2 of the object more preferable to calculate the relative positional relationship between the 2 _1.
In this way, objects can be disengaged from the available tracking range by the follow-up control unit 4, it is easy to re-display the object in the display range (display screen) 2 _1.

Further, according to the portable information terminal of the present invention. Thus indicates the direction in which the object of the arrow out of the display range (display screen) 2 ₁ display unit 2, a display range for re-display the object (Display screen) 21 It is easy to operate in accordance with the moving direction of ₁ .

As described above, arrows, the display range (display screen) of the object display unit 2 from the direction that deviates from 2 ₁ may indicate the opposite direction.
Even in this case, for example, in the portable information terminal of the second embodiment to be described later, the frame moving direction coincides with the re-display direction, so that the operation becomes easy.

In the portable information terminal of the present invention, furthermore, based on the relative positional relationship between the display range (display screen) 2 ₁ display means 2 of the object which is calculated through a relative positional relationship calculating means 5 , virtual display range calculating means for calculating a virtual display range (omitted in FIG. 1) that contains the object in the display angle of the same size as the display range (display screen) 2 ₁ display unit 2 (omitted in FIG. 1) the a, redisplay information sign 7 is a frame indicating the outline of a portion overlapping with the display range (display screen) 2 ₁ display unit 2 in the virtual display range calculated through the virtual display range calculating means, re display information sign display control means 6 is unlinked object from the display range (display screen) 2 ₁ display unit 2, and a virtual display range calculation means and the virtual display range calculated via the display range of the display unit 2 ( display screen) _{2 1} and a part When changes in overlapping state, the display at a predetermined position in the display range (display screen) 2 ₁ display unit 2 by changing the re-display information sign 7 in real time is preferred.
Even in this case, the observer can grasp whether the object is out how much in any direction from the display range (display screen) 2 _1, re-objects in the display range (display screen) 2 ₁ It becomes easy to display.

Or, in the portable information terminal of the present invention, furthermore, based on the relative positional relationship between the display range (display screen) 2 ₁ display means 2 of the object which is calculated through a relative positional relationship calculating means 5 , omitted in the virtual display range calculating means (Fig. 1 for calculating a virtual display range (Figure 1 Oite shown) that contains the object in the display angle of the same size as the display range (display screen) 2 ₁ display means 2 a), the display range (display screen of the object display means 2) off the 2 _1, and the display range (display screen of the virtual display range calculated through the virtual display range calculation means display means 2) 2 ₁ when changes in the state but overlapping part, the display unit 2 of the display range (display screen) 2 ₁ overlaps part of the display range of the display means 2 a frame indicating the outline is varied in real time in the virtual display range ( display screen) ₂ of the display ₁ That the frame display control means (omitted in FIG. 1) preferably has a.
Thus, to indicate the movement direction and movement amount of the display range (display screen) 2 ₁ for re-display the object with the arrow and the frame, the operation for re-display is more and easier.

In the portable information terminal of the present invention, furthermore, the display range of the display unit 2 (display screen) 2 selecting means for selectively from the image displayed on the ₁ to the observer the desired target object (omitted in FIG. 1) It is preferable to have.
Thus, it is possible to display the re-display information sign 7 of only the desired object, requires a not a display screen 2 ₁ cumbersome, easily operated for redisplay is.

Furthermore, in the portable information terminal of the present invention, the re-displaying guide sign display control means 6 displays the display range of the display means 2 according to the accuracy of the position information of the object acquired via the position information acquisition means 3 ( may be to change the brightness of the redisplay information sign 7 to be displayed on the display screen) 2 _1.
In this way, it is possible to grasp in advance the certainty of the re-display operation for the desired object from the re-display guide sign 7, and the operation becomes easy.

Furthermore, in the portable information terminal of the present invention, the re-display guide sign display control unit 6 displays the display unit 2 according to the change in the accuracy of the position information of the target object predicted through the position information prediction unit 3. range may be changed brightness redisplay signpost 7 (display screen) 2 _1.

In the portable information terminal of the present invention, re-display information sign 7 further when the object is out of the display range of the display means, the display range (display screen) 2 ₁ object display means 2 It is preferable to have a number indicating the relative distance to the part closest to the object.
In this way, the amount of movement of the display screen necessary for redisplaying can be grasped more accurately, and the operation becomes easier.

In the portable information terminal of the present invention, the re-display guide sign display control means 6 further includes a display range (display screen) 2 of the object display means 2 calculated via the relative positional relationship calculation means 5. The color of the re-displaying guide sign 7 may be changed in real time according to the change in the relative positional relationship with ₁ .
Even in this way, it is possible to grasp in advance the certainty of the re-display operation for the desired object from the re-display guide sign 7, and the operation becomes easy.

In the portable information terminal of the present invention, further, a speaker (not shown), re-display information sign 7 further when the object is out of the display range (display screen) 2 ₁ display means 2 to have a sound corresponding to the relative distance between sites closest to the object in the display range (display screen) 2 ₁ object and the display unit 2, redisplays information sign display control means 6, further in response to a change in relative positional relationship between the display range (display screen) 2 ₁ display means 2 of the object is calculated through a relative positional relationship calculating means 5, the wavelength of the re-display signs 7 sounds It is preferable to change the band or intensity and output from the speaker.
In this way, the amount of movement of the display screen required for redisplay can be grasped from the auditory sense in addition to the visual sense, and the operation becomes easy.

  FIG. 1 shows only an example of the basic configuration of the portable information terminal of the present invention. Therefore, the portable information terminal of the present invention includes an imaging unit, a display unit that displays an image captured through the imaging unit, a positional information acquisition unit that acquires positional information of an object, and the positional information acquisition unit. A tracking control means for following the acquisition of the position information of the object by the position information of the object using the position information of the object acquired via the position information acquisition means, and a display range of the display means of the object Relative positional relationship calculating means for calculating a relative positional relationship and necessary for redisplaying the target object in the display range of the display means when the target object is out of the display range of the display means. A re-display guide sign for guiding the movement amount and direction of the display means is displayed in a relative positional relationship with the display range of the display means of the object calculated via the relative positional relationship calculation means. Real-time as changes 1 is not limited to the configuration shown in FIG. 1 as long as it has a re-display guide sign display control unit that is changed and displayed at a predetermined position in the display range of the display unit. Good.

Next, an embodiment of the portable information terminal of the present invention having the basic configuration shown in FIG. 1 will be described.
First Embodiment FIG. 4 is an explanatory view showing a schematic configuration of a portable information terminal according to the first embodiment of the present invention, and FIG. 5 is a flowchart showing a display procedure of a re-display guide sign using the portable information terminal of FIG. is there. FIG. 6 is an explanatory view showing a display example of the re-displaying guide sign on the display screen of the portable information terminal of FIG. 4, and (a) is a display state of the re-displaying guide sign when a predetermined object is removed from the display screen. (B) is a figure which shows the display state of the re-display guide sign when a target object leaves | separates from the display screen far compared with (a).
In addition, the same code | symbol is attached | subjected about the same part as the structure shown in FIG. 1, and description is abbreviate | omitted.

The portable information terminal of the first embodiment includes a storage unit 9 and a position information prediction unit 10 in addition to the configuration of the portable information terminal shown in FIG.
The storage unit 9 stores the position information of the object acquired through the position information acquisition unit 3.
The position information prediction unit 10 predicts the position information of the target object based on the history of the position information of the target object stored via the storage unit 9.
The relative positional relationship calculating unit 5, based on the position information of the predicted object via the position information prediction unit 10, the display range (display screen) of the display means 2 of the object 2 ₁ relative positional relationship between the Is calculated.
As shown in FIGS. 6 (a) and 6 (b), an arrow is used for the re-display guide sign 7. This arrow when the object is out of the display range (display screen) 2 ₁ display means 2, the object (here, the display range (display screen of birch A display means 2) to an object in 2 ₁ It is configured so as to be deformed into a length and a direction corresponding to a relative distance and direction from the closest part.
Then, in the mobile information terminal in the first embodiment, the arrows indicate the direction opposite to the direction in which the object (Hippo A) is out of the display range (display screen) 2 ₁ display unit 2.

The control means 8 is a control circuit including a microcomputer, and controls the operation of the portable information terminal as follows.
When the observer points the imaging unit 1 toward a predetermined observation visual field, the imaging unit 1 is caused to image the predetermined observation visual field. Then, the display range (display screen) of the display unit 2 to 2 ₁ to display the captured image in real time. Further, the tracking control means 4 is made to follow the acquisition of the position information of the object by the position information acquiring means 3. Next, the storage unit 9 stores the position information of the object acquired through the position information acquisition unit 3. Then, the object monitors whether out of the display range (display screen) 2 ₁ display unit 2. When the object is out of the display range (display screen) 2 ₁ display unit 2, based on the position information prediction unit 10, the history of the position information of the object stored through the storage means 9, the object Predict position information of objects. Then, the relative positional relationship calculating means 5, using the position information of the acquired object via the position information prediction unit 10, the display range (display screen) of the display means 2 of the object 2 ₁ relative of To calculate the correct positional relationship. Then, the re-display information sign display control means 6, the display range of the display means 2 of the object (display screen) 2 ₁ redisplay for guiding the movement amount and direction of the display unit 2 required to redisplay the signpost 7, by changing in real time in response to changes in the relative positions of the display range (display screen) 2 ₁ display means 2 of the object is calculated through a relative positional relationship calculating means 5, so as to be displayed on a predetermined position in the display range (display screen) 2 ₁ display unit 2.
Other configurations are substantially the same as those of the portable information terminal shown in FIG.

Operations and processing procedures when observing a predetermined visual field using the portable information terminal of the first embodiment configured as described above, and display contents of the display screen will be described with reference to FIGS.
Here, the case where the hippopotamus A inhabiting a vast safari park is observed will be described.
When the observer directs the imaging means 1 to a predetermined observation visual field, the imaging means 1 images an observation visual field in a predetermined range (step S21). The imaged image is displayed in real time on the display screen 2 ₁ (step S22). Here, it is assumed that the field of view as shown in FIG. 3 (a) is displayed on the display screen 2 _1. 3 (a), the cover A is displayed on the display screen 2 _1. Next, the position information acquisition unit 3 acquires the position information of the object (cover A) by the tracking control of the tracking control unit 4 (step S23). Next, the storage means 9 stores the position information of the object (cover A) acquired via the position information acquisition means 3 (step S24). Object when (Hippo A) is not out of the display range (display screen) _{2 1} display unit 2 repeats the processes of steps S21~S24 described above. When the object is out of the display range (display screen) 2 ₁ display unit 2, the position information prediction unit 10, based on the history of the position information of the object stored through the storage means 9 (Hippo A) Then, the position information of the object (cover A) is predicted (step S26). Next, the relative positional relationship calculation means 5 uses the position information of the object (cover A) predicted via the position information prediction means 10 to display the display range (display) of the object (cover A). screen) to calculate the relative positional relationship between the _{2 1} (step S27). Then, re-displayed information sign display control means 6, to guide the movement amount and direction of the display unit 2 required to re-display object (the cover A) in the display range (display screen) 2 ₁ display means 2 relative redisplay signpost 7 (arrows in this case), and the display range (display screen) 2 ₁ display means 2 of the relative positional relationship calculating means 5 an object to be calculated via (Hippo a) for varied in real time according to a change in Do positional relationship, and displays a predetermined position in the display range (display screen) 2 ₁ display unit 2 (step S28).

For example, the object (Hippo A) is, when you are in a position slightly apart from the display screen 2 _1, as shown in FIG. 6 (a), the redisplay signpost (arrow) 7, most objects in the display screen 2 ₁ a site close to the object (Hippo a), the object (Hippo a) toward the opposite direction, is displayed in the length of the predetermined length corresponding to the distance of the object (the cover a) and the display screen 2 ₁ . Here, the object (Hippo A) is, when in a position further away in the same direction from the display screen 2 _1, as shown in FIG. 6 (b), the length of the redisplay signpost (arrow) 7 is long Become. On the other hand, according gradually moved in a direction opposite to the display screen 2 ₁ reappears signpost (arrow) 7, the object distance (Hippo A) and the display screen 2 ₁ shrinks. At this time, the length of the re-display guide sign (arrow) 7 is shortened. When the object (Hippo A) is moved to a position to be displayed on the display screen 2 ₁ a display screen 2 _1, redisplay signpost (arrow) 7 becomes invisible disappear from the display screen 2 _1. Therefore, the observer, the display screen 2 _1, in a direction opposite to the redisplay signpost (arrow) 7, by re-displaying information sign (arrow) 7 is moved until no visible object (Hippo A ) it is possible to reappear on the display screen 2 _1. Moreover, when moving the display screen 2 _1, observer, by monitoring the change in the redisplay signpost (arrow) 7 size, the object too is moved the display screen 2 ₁ in the moving direction (Hippo it can be prevented from accidentally disconnect a) from the display screen 2 _1.

In the mobile information terminal in the first embodiment, arrows displayed again signposts 7, the direction in which the object (Hippo A) is out of the display range (display screen) 2 ₁ display means 2 shows the reverse and has, this shows the relative moving direction of the object (Hippo a) when viewed as a reference to the display screen 2 _1. That, is moved toward the object display screen 2 ₁ objects in order to re-display the (Hippo A) on the display screen 2 ₁ (birch A), the object (Hippo A) is a display screen 2 ₁ moves It appears to move in the opposite direction. Therefore, the arrow redisplay signpost 7, when the object (Hippo A) is to indicate the direction opposite to the direction that deviates from the display screen 2 _1, when viewed as a reference to the display screen 2 _1, the display screen 2 ₁ Since the arrow of the re-display guide sign 7 on the top guides the moving direction of the object (cover A), an operation for re-display becomes easy.

According to the portable information terminal of the first embodiment, since the position of the target can be predicted via the position information prediction unit 10 even if the target is out of the range in which the tracking control unit 4 can track, the target things tend to reappear on the display range (display screen) 2 _1.
Other functions and effects are substantially the same as those of the portable information terminal shown in FIG.
In the portable information terminal of the first embodiment, the relative positional relationship calculation means 5 is acquired via the position information acquisition means 3 when the target object is located within a range in which the tracking control means 4 can follow. based on the position information of the object, calculates the relative positional relationship between the display range (display screen) 2 ₁ display means 2 of the object, the object is located within possible follow-up range by tracking control means 4 Occasionally, based on the position information of the predicted object via the position information prediction unit 10, so as to calculate the relative positional relationship between the display range (display screen) 2 ₁ display means 2 of the object Also good.
In this way, when the object is located within the range that can be followed by the follow-up control means 4, the observer can more accurately know in which direction and how far the object is from the display range. .

Second Embodiment FIG. 7 is an explanatory view showing a schematic configuration of a portable information terminal according to the second embodiment of the present invention, and FIG. 8 is a flowchart showing a display procedure of a re-display guide sign using the portable information terminal of FIG. is there. FIG. 9 is an explanatory view showing a display example of the re-display guide sign on the display screen of the portable information terminal of FIG. 7, and showing the display state of the re-display guide sign when a predetermined object is removed from the display screen. is there.
In addition, the same code | symbol is attached | subjected about the same part as the structure shown in FIG. 1, and description is abbreviate | omitted.

The portable information terminal of the second embodiment has a virtual display range calculation means 11 in addition to the configuration of the portable information terminal shown in FIG.
Virtual display range calculation means 11, based on the position information of the object acquired through the position information obtaining unit 3, the display range (display screen) of the display means 2 2 ₁ the same size object at a display angle of Is calculated.
Further, the re-display guide sign 7 displayed by the re-display guide sign display means 6 includes a display range of the display means 2 in the virtual display range calculated via the virtual display range calculation means 11, as shown in FIG. Display screen) 21 A frame indicating the outline of the portion overlapping ₁ is used.

The control means 8 is a control circuit including a microcomputer, and controls the operation of the portable information terminal as follows.
When the observer points the imaging unit 1 toward a predetermined observation visual field, the imaging unit 1 is caused to image the predetermined observation visual field. Then, the display range (display screen) of the display unit 2 to 2 ₁ to display the captured image in real time. Further, the tracking control means 4 is made to follow the acquisition of the position information of the object by the position information acquiring means 3. Then, the relative positional relationship calculating means 5, by using the position information of acquired object via the position information obtaining unit 3, the display range (display screen) of the display means 2 of the object 2 ₁ relative of To calculate the correct positional relationship. Then, in the virtual display range calculating unit 11 based on the position information of the object acquired through the position information obtaining unit 3, the display angle of the display range (display screen) 2 ₁ the same size of the display means 2 A virtual display range including the object is calculated. Also, off the object from the display range 2 ₁ of the display means 2, and a virtual display range and the display range (display screen) 2 ₁ display means 2 monitors whether partially overlap each other. Then, off the object from the display range (display screen) 2 ₁ display unit 2, and, when the virtual display range and the display range (display screen) 2 ₁ display unit 2 are overlapped in part, redisplay guide the marker display control unit 6, the display range of the display means 2 of the object (display screen) reappear signpost for guiding the movement amount and direction of the display unit 2 required to re-appear in the 2 ₁ (box) 7, by changing in real time in response to changes in the relative positions of the display range (display screen) 2 ₁ display means 2 of the object is calculated through a relative positional relationship calculating means 5, display means 2 of the display range (display screen) so as to be displayed at the predetermined position 2 _1.
Other configurations are substantially the same as those of the portable information terminal shown in FIG.

Operations and processing procedures when observing a predetermined visual field using the portable information terminal of the second embodiment configured as described above, and display contents on the display screen will be described with reference to FIGS.
Here, the case where the hippopotamus A inhabiting a vast safari park is observed will be described.
When the observer directs the imaging unit 1 to a predetermined observation visual field, the imaging unit 1 images an observation visual field in a predetermined range (step S31). The imaged image is displayed in real time on the display screen 2 ₁ (step S32). Next, the position information acquisition unit 3 acquires the position information of the object (cover A) by the tracking control of the tracking control unit 4 (step S33). Next, the relative positional relationship calculation means 5 uses the position information of the object (cover A) acquired via the position information acquisition means 3 to display the display range (display) of the object (cover A). screen) to calculate the relative positional relationship between the _{2 1} (step S34). Then, the virtual display range calculating means 11, the object obtained via the position information obtaining unit 3, based on the position information (birch A), the display unit 2 display range (display screen) 2 ₁ the same size of the A virtual display range including the target object at the display angle of view is calculated (step S35). Object when (Hippo A) is the display range (display screen) of the display means 2 2 ₁ and has not or virtual display range out of the display range 21 of the display unit 2 does not overlap, in step S31~S35 described above Repeat the process. Object outside the display range (display screen) 2 ₁ (birch A) display unit 2, and, when the virtual display range and the display range (display screen) 2 ₁ display unit 2 are overlapped in part, re display information sign display control means 6, the object of (Hippo a) display means 2 display range (display screen) 2 ₁ display unit 2 required to re-display for guiding the movement amount and direction again change in the relative positional relationship between the display signpost (frame) 7, a display range (display screen) 2 ₁ display means 2 of the relative positional relationship calculating means 5 an object to be calculated via (Hippo a) varied in real time according to, is displayed at a predetermined position in the display range (display screen) 2 ₁ display unit 2 (step S37).

For example, according gradually moved in a direction overlapping the redisplay signpost (frame) 7 a display screen 2 _1, the object distance (Hippo A) and the display screen 2 ₁ shrinks. Then, the display range (display screen) 2 ₁ and overlaps the range of the display unit 2 and the virtual display range increases, redisplay signpost (frame) 7 is increased. Then, a display screen 2 _1, is moved to a position where the object (Hippo A) is displayed on the display screen 2 _1, redisplay signpost (frame) 7 is invisible disappear from the display screen 2 _1. Therefore, the observer, the display screen 2 _1, in a direction overlapping the redisplay signpost (frame) 7, by re-displaying information sign (frame) 7 is moved until no visible object (the cover A) it is possible to reappear on the display screen 2 _1. Moreover, when moving the display screen 2 _1, observer, by monitoring the change in the redisplay signpost (frame) 7 size, the object too is moved the display screen 2 ₁ in the moving direction (Hippo it can be prevented from accidentally disconnect a) from the display screen 2 _1.

According to the portable information system of the second embodiment. Thus to display a frame indicating the outline of the display range (display screen) 2 ₁ overlaps part of the display unit 2 in the virtual display range as a redisplay signpost 7, easily fit the frame (the top and right side in FIG. 9) display range (display screen) 2 ₁ in a two-dimensional direction on the side, the display range (display screen) for re-display the object more 2 ₁ move operation It can be done easily.
Other functions and effects are substantially the same as those of the portable information terminal shown in FIG.

Third Embodiment FIG. 10 is an explanatory view showing a schematic configuration of a portable information terminal according to the third embodiment of the present invention, and FIG. 11 is a flowchart showing a display procedure of a re-display guidance sign using the portable information terminal of FIG. is there. FIG. 12 is an explanatory view showing a display example of the re-display guide sign on the display screen of the portable information terminal of FIG. 10, and showing the display state of the re-display guide sign when a predetermined object is removed from the display screen. is there.
In addition, the same code | symbol is attached | subjected about the same part as the structure shown in FIG. 1, and description is abbreviate | omitted.

The mobile information terminal according to the third embodiment includes a virtual display range calculation unit 11 and a frame display control unit 12 in addition to the configuration of the mobile information terminal shown in FIG.
Virtual display range calculation means 11, based on the position information of the object acquired through the position information obtaining unit 3, including the target object in the display angle of the same size as the display area 2 _first display unit 2 Virtual Calculate the display range.
Frame display control means 12, the display range (display screen) of the object display means 2 2 ₁ deviates from, and the display range of the virtual display range calculation means 11 virtual display range calculated via the display means 2 (Display when changes in the state where the screen) 2 ₁ and overlap in part, as shown in FIG. 12, a frame indicating the outline of the portion overlapping with the display range (display screen) 2 ₁ display unit 2 in the virtual display area 13 It is varied in real time display range of the display unit 2 (display screen) to be displayed on the 2 _1.
In addition, the re-display information sign 7 redisplay information sign display means 6 displays, as shown in FIG. 12, when the object is out of the display range (display screen) 2 ₁ display means 2, the object It is used relative distance and the arrow to deform the length and orientation corresponding to the direction of the closest site to the object in the display range (display screen) 2 ₁ display unit 2 and. This arrow when the object is out of the display range (display screen) 2 ₁ display means 2, the object (here, the display range (display screen of birch A display means 2) to an object in 2 ₁ It is configured so as to be deformed into a length and a direction corresponding to a relative distance and direction from the closest part.
Then, in the mobile information terminal in the third embodiment, the arrows indicate the direction opposite to the direction in which the object (Hippo A) is out of the display range (display screen) 2 ₁ display unit 2.
Further, redisplay information sign display control means 6, a re-display information sign 7, the display range (display screen) of the display means 2 object in 2 ₁ (birch A) sites closest (here, the display screen 2 ₁ at the end opposite to the left side portion) of the lower edge (in this case, in the vicinity of the left side portion) of the upper side of the display screen 2 _1, and, of the frame 13 to be displayed via a frame display control means 12 Display on the outside.

The control means 8 is a control circuit including a microcomputer, and controls the operation of the portable information terminal as follows.
When the observer points the imaging unit 1 toward a predetermined observation visual field, the imaging unit 1 is caused to image the predetermined observation visual field. Then, the display range (display screen) of the display unit 2 to 2 ₁ to display the captured image in real time. Further, the tracking control means 4 is made to follow the acquisition of the position information of the object by the position information acquiring means 3. Then, the relative positional relationship calculating means 5, using the position information of the acquired object via the position information obtaining unit 3, the display range (display screen) of the display means 2 of the object 2 ₁ relative of To calculate the correct positional relationship. Then, in the virtual display range calculating unit 11 based on the position information of the object acquired through the position information obtaining unit 3, the display angle of the display range (display screen) 2 ₁ the same size of the display means 2 A virtual display range including the object is calculated. Further, the object monitors whether out of the display range (display screen) 2 ₁ display unit 2. When the object is out of the display range (display screen) 2 ₁ display unit 2, the re-display information sign display control means 6, the display range (display screen) of the display means 2 of the object to 2 ₁ re Display of the display means 2 of the object calculated through the relative positional relationship calculation means 5 is a re-display guide sign (arrow) 7 for guiding the movement amount and direction of the display means 2 necessary for display. range (display screen) 2 ₁ varied in real time in response to changes in the relative positional relationship between the display range (display screen) of the display unit 2 is displayed at the predetermined position 2 _1. Furthermore, off object from the display range (display screen) 2 ₁ display unit 2, and a virtual display range and the display range (display screen) 2 ₁ display means 2 monitors whether partially overlap each other . Then, off the object from the display range (display screen) 2 ₁ display unit 2, and, when the virtual display range and the display range (display screen) 2 ₁ display unit 2 are overlapped in part, a frame display control the means 12, by changing in real time according to the display range (display screen) 2 ₁ overlaps part of the outline (frame) 13 of the display unit 2 in the virtual display range to changes in the relative positional relationship, the display means 2 so as to be displayed on a predetermined position in the display range (display screen) 2 _1.
Other configurations are substantially the same as those of the portable information terminal shown in FIG.

Operations and processing procedures when observing a predetermined visual field using the portable information terminal of the third embodiment configured as described above, and display contents on the display screen will be described with reference to FIGS. 11 and 12.
Here, the case where the hippopotamus A inhabiting a vast safari park is observed will be described.
When the observer directs the imaging means 1 to a predetermined observation visual field, the imaging means 1 images an observation visual field within a predetermined range (step S41). The imaged image is displayed in real time on the display screen 2 ₁ (step S42). Next, the position information acquisition unit 3 acquires the position information of the object (cover A) by the tracking control of the tracking control unit 4 (step S43). Next, the relative positional relationship calculation means 5 uses the position information of the object (cover A) acquired via the position information acquisition means 3 to display the display range (display) of the object (cover A). screen) to calculate the relative positional relationship between the _{2 1} (step S44). Then, the virtual display range calculating means 11, the object obtained via the position information obtaining unit 3, based on the position information (birch A), the display unit 2 display range (display screen) 2 ₁ the same size of the A virtual display range including the target object at the display angle of view is calculated (step S45). Object when (Hippo A) is not out of the display range (display screen) _{2 1} display unit 2 repeats the processes of steps S41~S45 described above. Object when (Hippo A) is outside the display range (display screen) 2 ₁ display unit 2, redisplays information sign display control means 6, the object (Hippo A) display range of the display unit 2 (display screen) displayed again signpost (arrow) 7 for guiding the movement amount and direction of the display unit 2 required to re-appear in the 2 _1, the object to be calculated through the relative positional relationship calculating means 5 predetermined position in the varied in real time, the display range of the display unit 2 (display screen) 2 ₁ in response to a change in relative positional relationship between the display range (display screen) 2 ₁ display means 2 (Hippo a) (Step S47). Furthermore, the object outside the display range (display screen) 2 ₁ (birch A) display unit 2, and, when the virtual display range and the display range (display screen) 2 ₁ display unit 2 are overlapped in part, matchbox display control unit 12, by changing in real time according to the display range (display screen) 2 ₁ overlaps part of the outline (frame) 13 of the display unit 2 in the virtual display range to changes in the relative positional relationship, It is displayed at a predetermined position in the display range (display screen) 2 ₁ display unit 2.

For example, (which is also the opposite direction. The redisplay signpost (arrow) 7) direction overlapping with the display screen 2 ₁ the frame 13 according gradually moved to the object (birch A) and the display screen 2 The distance to ₁ is reduced. Then, the display range (display screen) 2 ₁ and overlaps the range of the display unit 2 and the virtual display range is increased, along with the frame 13 is increased, redisplay signpost (arrow) 7 the length of the shorter. Then, a display screen 2 _1, is moved to a position where the object (Hippo A) is displayed on the display screen 2 _1, the frame 13 and redisplay signpost (arrow) 7 becomes invisible disappear from the display screen 2 ₁ . Therefore, the observer, the display screen 2 _1, in a direction that overlaps the frame 13 (redisplay signpost (arrow) 7 opposite direction to), to the frame 13 and redisplay signpost (arrow) 7 is eliminated invisible by moved, it is possible to re-display object (the cover a) on the display screen 2 _1. Moreover, when moving the display screen 2 _1, observer, and by monitoring the change of the frame 13 and redisplay signpost (arrow) 7 size, excessively move the display screen 2 ₁ in the moving direction target objects can be prevented from being removed from the display screen 2 ₁ (birch a).

In the mobile information terminal in the third embodiment, arrows displayed again signposts 7, the direction in which the object (Hippo A) is out of the display range (display screen) 2 ₁ display means 2 shows the reverse and is, this shows the relative moving direction of the frame 13 when viewed as a reference to the display screen 2 _1. That is, the object is moved toward the display screen 2 ₁ in order to re-display the (Hippo A) on the display screen 2 ₁ to the object (birch A), on the display screen 2 _1, the frame 13 is a display screen 2 It seems to move in the direction opposite to the direction of movement of ₁ . Therefore, the arrow redisplay signpost 7, when the object (Hippo A) is to indicate the direction opposite to the direction that deviates from the display screen 2 _1, when viewed as a reference to the display screen 2 _1, the display screen 2 ₁ Since the moving direction of the frame 13 on the upper side is guided, an operation for redisplaying is facilitated.

According to the mobile information terminal in the third embodiment, to indicate the movement direction and movement amount of the display range (display screen) 2 ₁ for re-display the object with the arrow and the frame, operation for redisplay It becomes easier to do.
Other functions and effects are substantially the same as those of the portable information terminal shown in FIG.

Fourth Embodiment FIG. 13 is an explanatory view showing a schematic configuration of a portable information terminal according to the fourth embodiment of the present invention, and FIG. 14 is a flowchart showing a display procedure of a re-display guidance sign using the portable information terminal of FIG. is there. FIG. 15 is an explanatory diagram showing the display state of the re-display guide sign on the display screen of the portable information terminal of FIG. 13, and (a) shows the state when a desired object is selected from the image displayed on the display screen. (B) is a diagram showing the display state of the re-display guide sign when an object of an unselected image is removed from the display screen. (C) is a view when the selected object is removed from the display screen. It is a figure which shows the display state of the re-display guide sign.
In addition, the same code | symbol is attached | subjected about the same part as the structure shown in FIG. 1, and description is abbreviate | omitted.

The portable information terminal of the fourth embodiment has a selection means 14 in addition to the configuration of the portable information terminal shown in FIG.
Selection means 14, for example, is provided as a touch panel on the display screen 2 ₁ surface has a function to select the viewer the desired object 15 from being displayed on the display screen 2 ₁ images.
Then, the position information acquisition unit 3 acquires the position information of the selected object 15.

The control means 8 is a control circuit including a microcomputer, and controls the operation of the portable information terminal as follows.
When the observer points the imaging unit 1 toward a predetermined observation visual field, the imaging unit 1 is caused to image the predetermined observation visual field. Then, the display range (display screen) of the display unit 2 to 2 ₁ to display the captured image in real time. Then, through the selection means 14, to select from the display range of the display unit 2 (display screen) 2 ₁ to the image displayed on the viewer of the desired object 15.
Next, the tracking control means 4 is made to follow the acquisition of the position information of the selected object (object 15) by the position information acquiring means 3. Then, the relative positional relationship calculating means 5, using the position information of the physical object 15 obtained via the position information obtaining unit 3, the display range of the display means 2 of the object 15 (display screen) 2 ₁ of The relative positional relationship is calculated. Also, the object 15 monitors whether out of the display range (display screen) 2 ₁ display unit 2. When the object 15 is outside the display range (display screen) 2 ₁ display unit 2, the re-display information sign display control means 6, the display range (display screen) of the display means 2 of the object 15 2 ₁ The display unit 2 displays the object 15 calculated through the relative positional relationship calculation unit 5 with the re-display guide sign 7 for guiding the movement amount and direction of the display unit 2 necessary for the display unit 2 to be displayed again. range (display screen) 2 ₁ varied in real time in response to changes in the relative positional relationship between the display range (display screen) of the display unit 2 is displayed at the predetermined position 2 _1.
Other configurations are substantially the same as those of the portable information terminal shown in FIG.

The operation and processing procedure when observing a predetermined visual field using the portable information terminal of the fourth embodiment configured as described above, and the display content of the display screen will be described with reference to FIGS.
Here, the case where the hippopotamus A which inhabits a vast safari park is observed is demonstrated. In FIG. 15A, M is an observer's finger.
When the observer directs the imaging means 1 to a predetermined observation visual field, the imaging means 1 images an observation visual field in a predetermined range (step S61). The imaged image is displayed in real time on the display screen 2 ₁ (step S62). Here, on the display screen 2 ₁ shall cover A shown in FIG. 15 (a), snake B, elephants C, field of view including a butterfly D are displayed. Next, the selection unit 14 to selectively display range of the display unit 2 (display screen) 2 desired object from the displayed image to ₁ (object 15) to the observer (step S63). Then, as shown in FIG. 15 (a), the display range (display screen) 2 ₁ to the displayed birch A, snakes B, elephants C, and site cover A of butterfly D is being displayed, the viewer When touched, the cover A is recognized as the selected object 15. Next, the position information acquisition unit 3 acquires the position information of the selected object 15 (cover A) by the tracking control of the tracking control unit 4 (step S64). Next, the relative positional relationship calculation means 5 uses the position information of the object 15 (cover A) acquired via the position information acquisition means 3, and the display range of the display means 2 for the object 15 (cover A). 2 The relative positional relationship with ₁ is calculated (step S65). When the object 15 (cover A) is not out of the display range (display screen) _{2 1} display unit 2 repeats the processes of steps S61~S65 described above. For example, as shown in FIG. 15 (b), the display range of the snake B display unit 2 (display screen) 2 ₁ come off the object 15 (cover A) is the display range (display screen) is outside the 2 ₁ not so the display range (display screen) 2 redisplay information sign 7 to ₁ is not displayed. On the other hand, when the object 15 (cover A) is outside the display range (display screen) 2 ₁ display unit 2, as shown in FIG. 15 (c), redisplays information sign display control means 6, the object 15 (in this case, an arrow) (Hippo a) display range of the display unit 2 (display screen) reappear signpost for guiding the movement amount and direction of the display unit 2 necessary to reappear in 2 ₁ 7 and changes in real time in response to changes in the relative positional relationship between the display range (display screen) 2 ₁ display means 2 of the object 15 that is calculated via the relative positional relationship calculating means 5 (Hippo a) by, to be displayed on the predetermined position in the display range (display screen) 2 ₁ display unit 2 (step S67).

According to the mobile information terminal in the fourth embodiment, because it has a selection means 14 for selecting the viewer the display range (display screen) 2 desired object 15 from the image displayed on the _first display unit 2, the desired can be displayed redisplayed signpost 7 only for the object, requires a not a display screen 2 ₁ cumbersome, easily operated for redisplay is.
Other functions and effects are substantially the same as those of the portable information terminal shown in FIG.

  As mentioned above, although embodiment of the portable information terminal of this invention was described, the portable information terminal of this invention is not limited to what was shown in said each embodiment. For example, the configuration unique to the portable information terminal of each embodiment may be arbitrarily combined.

  The present invention is useful in a field that requires observation of an object that easily deviates from the non-observation field, such as when observing a plurality of types of animals and plants that inhabit a vast range of areas.

It is explanatory drawing which shows an example of schematic structure of the portable information terminal of this invention. It is a flowchart which shows the operation and processing procedure using the portable information terminal of FIG. It is explanatory drawing which shows the example of a display of the re-display guidance sign in the display screen of the portable information terminal of FIG. 1, (a) is a figure which shows a state when a predetermined target object is located in a display screen, (b) is A diagram showing the display state of the re-display guide sign when a predetermined object is removed from the display screen. (C) is the display of the re-display guide sign when the target object is far away from the display screen compared to (b). It is a figure which shows a display state. It is explanatory drawing which shows schematic structure of the portable information terminal concerning 1st embodiment of this invention. It is a flowchart which shows the display procedure of the re-display guidance sign using the portable information terminal of FIG. It is explanatory drawing which shows the example of a display of the re-display guide sign in the display screen of the portable information terminal of FIG. 4, (a) is a figure which shows the display state of the re-display guide sign when a predetermined target object remove | deviates from the display screen. (B) is a figure which shows the display state of the re-display guide sign when a target object leaves | separates from the display screen far compared with (a). It is explanatory drawing which shows schematic structure of the portable information terminal concerning 2nd embodiment of this invention. It is a flowchart which shows the display procedure of the re-displaying guide sign using the portable information terminal of FIG. It is explanatory drawing which shows the example of a display of the re-display guidance sign in the display screen of the portable information terminal of FIG. 7, and is a figure which shows the display state of the re-display guidance sign when a predetermined target object remove | deviates from the display screen. It is explanatory drawing which shows schematic structure of the portable information terminal concerning 3rd embodiment of this invention. It is a flowchart which shows the display procedure of the re-displaying guide sign using the portable information terminal of FIG. It is explanatory drawing which shows the example of a display of the re-displaying guide sign in the display screen of the portable information terminal of FIG. 10, and is a figure which shows the display state of the re-displaying guide sign when a predetermined target object remove | deviates from the display screen. It is explanatory drawing which shows schematic structure of the portable information terminal concerning 4th embodiment of this invention. It is a flowchart which shows the display procedure of the re-displaying guide sign using the portable information terminal of FIG. It is explanatory drawing which shows the display state of the re-display guide sign in the display screen of the portable information terminal of FIG. 13, (a) is a figure which shows a state when selecting a desired target object from the image displayed on the display screen, (b) is a diagram showing the display state of the re-display guidance sign when the object of the unselected image is off the display screen, (c) is the re-display guidance when the selected object is off the display screen It is a figure which shows the display state of a label | marker.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image pickup means 2 Display means 2 ₁ (Real time image) display screen 3 Position information acquisition means 4 Follow-up control means 5 Relative positional relationship calculation means 6 Redisplay guide sign display control means 8 Control means 9 Storage means 10 Position information prediction means 11 Virtual display range calculation means 12 Frame display means 13 Frame 14 Selection means 15 Object A Hippo B Snake C Elephant D Butterfly M Observer's finger

Claims (19)

Imaging means;
Display means for displaying an image picked up via the image pickup means;
Position information acquisition means for acquiring position information of the object;
Follow-up control means for following the acquisition of the position information of the object by the position information acquisition means;
Using the positional information of the object acquired via the positional information acquisition means, a relative positional relationship calculating means for calculating the relative positional relationship of the target object and the display range of the display means;
Redisplay guidance for guiding the amount and direction of movement of the display means necessary for redisplaying the object in the display range of the display means when the object is out of the display range of the display means The display range of the display means is changed by changing the sign in real time according to the change of the relative positional relationship of the object calculated with the relative position relation calculation means with the display range of the display means. Re-display guide sign display control means for displaying at a predetermined position in
A portable information terminal comprising: And storage means for storing position information of the object acquired through the position information acquisition means;
Based on a history of position information of the object stored via the storage means, and having position information prediction means for predicting position information of the object;
The relative positional relationship calculating means calculates a relative positional relationship between the target object and the display range of the display means based on the positional information of the target object predicted via the positional information predicting means. The portable information terminal according to claim 1. The relative positional relationship calculating means calculates a relative distance and direction between the object and a portion closest to the object in the display range of the display means;
The re-display guide sign display control means is configured to calculate the re-display guide sign as a part closest to the target in the display range of the target and the target calculated by the relative positional relationship calculating means. 3. The portable information terminal according to claim 1, wherein the portable information terminal is displayed in a predetermined position in a display range of the display unit by changing in real time according to a change in relative distance and direction.   The re-display guide sign is displayed in a relative distance and direction between the object and a portion closest to the object in the display range of the display means when the object is out of the display range of the display means. The portable information terminal according to any one of claims 1 to 3, wherein the portable information terminal is an arrow that deforms to a corresponding length and direction.   The portable information terminal according to claim 4, wherein the arrow indicates a direction in which the object is out of a display range of the display unit.   The portable information terminal according to claim 4, wherein the arrow indicates a direction opposite to a direction in which the object is out of a display range of the display unit.   The said re-displaying guide sign display control means displays the said re-displaying guide sign near the part closest to the object in the display range of the display means. The portable information terminal described.   The re-displaying guide sign display control unit displays the re-displaying guide sign in the vicinity of the end portion on the opposite side of the display range of the display unit from the portion closest to the object. The portable information terminal in any one of 1-6. Further, based on the relative positional relationship of the object calculated with the relative positional relationship calculating means with the display range of the display means, the display angle of view is the same as the display range of the display means. Virtual display range calculation means for calculating a virtual display range including the object,
The re-display guide sign is a frame indicating a contour of a portion overlapping a display range of the display unit in the virtual display range calculated through the virtual display range calculation unit;
The re-display guide sign display control means is configured such that the object is out of the display range of the display means, and the virtual display range calculated via the virtual display range calculation means is equal to the display range of the display means. When changing in the state which overlapped in the part, the said re-display guide sign is changed in real time, and it displays on the predetermined position in the display range of this display means. Mobile information terminal. Further, based on the relative positional relationship of the object calculated with the relative positional relationship calculating means with the display range of the display means, the display angle of view is the same as the display range of the display means. Virtual display range calculation means for calculating a virtual display range including the object;
When the object deviates from the display range of the display means and the virtual display range calculated via the virtual display range calculation means and the display range of the display means change in a partially overlapping state Frame display control means for changing in real time a frame indicating the outline of a portion overlapping the display range of the display means in the virtual display range and displaying the frame in the display range of the display means;
The portable information terminal according to claim 1, comprising:   The portable information terminal according to claim 1, wherein the position information acquisition unit acquires the position of the object based on a display range of the display unit.   The portable information terminal according to claim 1, wherein the position information acquisition unit acquires a position of an object inside a display range of the display unit.   The portable information terminal according to claim 1, wherein the position information acquisition unit acquires the position of an object using GPS.   The portable information terminal according to claim 1, further comprising selection means for allowing an observer to select a desired object from an image displayed in a display range of the display means.   The re-displaying guide sign display control means sets the brightness of the re-displaying guide sign displayed in the display range of the display means according to the accuracy of the position information of the object acquired through the position information acquiring means. The mobile information terminal according to claim 1, wherein the mobile information terminal is changed.   The re-displaying guide sign display control unit is configured to display the re-displaying guide sign displayed in the display range of the display unit according to a change in accuracy of the position information of the object predicted through the position information predicting unit. The portable information terminal according to any one of claims 2 to 14, which is dependent on claim 2 and claim 2, wherein brightness is changed.   The re-display guide sign further indicates a relative distance between the object and a portion closest to the object in the display range of the display means when the object is out of the display range of the display means. The portable information terminal according to claim 1, wherein the portable information terminal has a number.   The re-display guide sign display control means is further adapted to change the relative position relationship between the object and the display range of the display means calculated via the relative position relationship calculation means. The mobile information terminal according to claim 1, wherein the color of the display guide sign is changed in real time. Furthermore, it has a speaker,
The re-display guide sign further indicates a relative distance between the object and a portion closest to the object in the display range of the display means when the object is out of the display range of the display means. Have a corresponding sound,
The re-display guide sign display control means is further adapted to change the relative position relationship between the object and the display range of the display means calculated via the relative position relationship calculation means. 19. The portable information terminal according to claim 1, wherein a wavelength band or intensity of a sound of the display guide sign is changed and output from the speaker.

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