WO2018173690A1 - Terminal-side device and movement direction instruction method - Google Patents

Abstract

A terminal-side device capable of communicating with a transmitter is provided with: a control unit which acquires the antenna characteristics of a transmitter corresponding to identification information identifying the transmitter, and which determines a movement direction for moving the terminal-side device so as to match the antenna characteristics; and an output unit which outputs a movement direction instruction corresponding to the movement direction.

Description

Terminal side device and movement direction indication method

The present disclosure relates to a terminal device and a movement direction indication method.

In order to download stored camera image information by wireless LAN, an environment in which stable communication can be performed is required. Therefore, propagation loss can be minimized by detecting the presence of the terminal device and guiding it to the optimum download area, or changing the direction of the antenna of the wireless device installed in the camera device, so that the image information can be downloaded. It becomes possible to perform stably, which can contribute to the improvement of the convenience of the user.

Patent Document 1 easily aligns antennas with each other when the user holds a portable terminal over an information terminal (for example, a kiosk terminal) to be communicated in non-contact communication using a directional antenna with a fixed beam. Discloses an alignment aid that makes it possible. The alignment assist device in contactless communication between the information terminal and the portable terminal includes a notification unit that notifies the degree of positional deviation of the antenna between the information terminal and the portable terminal; received signal strength or reception by the contactless communication And a control unit configured to control a notification unit based on a signal-to-noise ratio or a positional relationship between an antenna of the mobile terminal and an antenna of the information terminal detected from an image captured by a camera included in the information terminal.

Patent Document 2 is a mobile terminal capable of guiding a user to a communication area in which communication via a base station is possible when the radio strength with the base station is a predetermined level or less and communication via the base station is not possible. And the radio wave condition confirmation method is disclosed. A portable terminal includes a near-field wireless communication device capable of communicating directly (without via a base station) with other surrounding portable terminals, and when in a dead zone where the wireless strength with the base station is insufficient, the near-field wireless communication device It communicates with other surrounding portable terminals to acquire wireless strength information with each base station along with the position information. The acquired wireless strength and position information are stored in a memory and displayed on a display device together with map information to notify the user of a communicable zone or area with a base station.

JP, 2015-115783, A JP 2008-244942 A

Since the surveillance camera monitors for a long time, the volume of image information stored in the camera is enormous. Therefore, in order to cause the terminal device to download the image information, it is preferable to use a wireless LAN (for example, WiGig (registered trademark)) or the like using a millimeter wave band capable of high-speed communication. A millimeter wave band is used as an example of such a wireless communication method. However, in an actual communication environment, the antenna characteristics of the camera-side device greatly fluctuate depending on the installation location and installation direction of the camera-side device, and the communication capability largely fluctuates depending on the position of the terminal-side device. In particular, since millimeter waves have a high rectilinearity and have a property of being easily attenuated, when communication is performed using a millimeter wave band, fluctuations in communication capability appear notably. Therefore, although it is desirable to determine a position with high communication capability, such a position determination is not easy for ordinary users.

An object of the present disclosure is to provide a terminal side apparatus capable of presenting an appropriate position of a terminal side apparatus to a transmitter and a movement direction indication method.

The terminal-side apparatus of the present disclosure is a terminal-side apparatus capable of communicating with a transmitter, and acquires an antenna characteristic of the transmitter corresponding to identification information for identifying the transmitter, and adapts to the antenna characteristic. A control unit that determines a moving direction in which the terminal device is moved, and an output unit that outputs a moving direction instruction corresponding to the moving direction.

The movement direction instruction method of the present disclosure is a movement direction instruction method for instructing a movement direction in which a terminal device capable of communicating with a transmitter is moved, and the control unit of the terminal device identifies identification information for identifying the transmitter. The antenna characteristic of the corresponding transmitter is acquired, the movement direction in which the terminal apparatus is moved is determined so as to conform to the antenna characteristic, and a movement direction instruction corresponding to the movement direction is output to the output unit.

The terminal side apparatus and movement direction instruction method of the present disclosure are propagation loss between the camera side apparatus and the terminal side apparatus when downloading image information to the terminal side apparatus using a wireless LAN using a millimeter wave band. Can be downloaded in a stable communication environment.

FIG. 1 is a block diagram showing a schematic configuration of an image information download system according to an embodiment of the present disclosure. FIG. 2A is a conceptual diagram showing the function of the terminal device according to the present embodiment. FIG. 2B is a conceptual diagram showing the function of the terminal device according to the present embodiment. FIG. 2C is a conceptual diagram showing the function of the terminal device according to the present embodiment. FIG. 2D is a conceptual diagram showing the function of the terminal device according to the present embodiment. FIG. 3A is a diagram showing a terminal device according to the present embodiment, and is a block diagram showing a schematic configuration of the terminal device. FIG. 3B is a view showing the terminal device according to the present embodiment, and is a conceptual view showing a state in which the terminal device is operating. FIG. 4A is a conceptual diagram showing antenna characteristics of a millimeter wave transmitter. FIG. 4B is a diagram showing an example of an antenna characteristic database to which the terminal side device refers. FIG. 5 is a flowchart for explaining the operation of the terminal device.

Hereinafter, an embodiment (hereinafter, referred to as “the present embodiment”) which specifically discloses a terminal device and a movement direction indication method according to the present disclosure will be described in detail with reference to the drawings as appropriate. However, the detailed description may be omitted if necessary. For example, detailed description of already well-known matters and redundant description of substantially the same configuration may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art. It should be noted that the attached drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and they are not intended to limit the claimed subject matter.

Hereinafter, preferred embodiments for carrying out the present disclosure will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of an image information download system 1 according to an embodiment of the present disclosure. The image information download system 1 according to the present embodiment includes a camera side device 10 having a monitoring camera 11 and a millimeter wave transmitter (transmitter) 12, an antenna characteristic database 14, and a terminal side device 20.

[Camera-side device 10]
In the camera-side device 10, the monitoring camera 11 has an imaging device (not shown) such as a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS), and is obtained by photographing the monitoring target area (not shown). The obtained image information is output to the millimeter wave transmitter 12.

The millimeter wave transmitter 12 accumulates the image information output from the monitoring camera 11 and transmits the accumulated image information to the terminal device 20 (downloads it to the terminal device 20). The transmission of the image information to the terminal device 20 can be performed when the terminal device 20 exists in the receivable area 106. Also, for transmission of image information to the terminal-side device 20, a millimeter wave band wireless LAN (for example, WiGig (registered trademark, IEEE 802.11ad) capable of high-speed communication is used. Note that a frequency band of WiGig (registered trademark) Is in the 60 GHz band.

The millimeter wave transmitter 12 transmits image information when the terminal device 20 exists in the receivable area 106. At this time, whether or not the terminal device 20 exists in the receivable area 106 is performed based on the terminal position information of the terminal device 20.

The millimeter wave transmitter 12 determines whether the terminal device 20 exists in the receivable area 106, and when it is determined that the terminal apparatus 20 exists in the receivable area 106, the image information is transmitted to the wireless LAN. To the terminal device 20 via However, in the actual communication environment, the antenna characteristics of the millimeter wave transmitter 12 of the camera unit 10 largely fluctuate depending on the installation location, installation direction, etc. of the camera unit 10, and the terminal side is within the receivable area 106. Depending on the position of the device 20, the communication capability may be greatly varied. Then, the position where the optimum communication environment can be secured in the receivable area 106 is the optimum download position 107, and it is desirable that the terminal device 20 perform the download at this position.

[Terminal device 20]
FIG. 2A and FIG. 2B are conceptual diagrams showing the functions of the terminal device 20 according to the present embodiment. FIG. 2A is a view showing a situation in which the user uses the terminal device 20 to capture the millimeter wave transmitter 12 of the camera device 10. The user captures and captures the millimeter wave transmitter 12 using an out camera installed on the side opposite to the side on which the display of the terminal device 20 is installed. A captured image including the millimeter wave transmitter 12 is displayed on the display of the terminal device 20. And the terminal side apparatus 20 acquires the LED lamp position P2 which is a corner part P1 or a light-emitting body as a feature point of the millimeter wave transmitter 12, for example. Based on this feature point, the terminal device 20 can acquire the antenna characteristic of the captured millimeter wave transmitter 12 with reference to the antenna characteristic database 14 arranged in a network such as the Internet. The connection between the terminal device 20 and the antenna characteristic database 14 is performed by wireless communication including a wireless LAN, and is not particularly limited.

FIG. 2B is a view schematically showing the strength area A according to the antenna characteristic of the camera side device 10, in particular, the millimeter wave transmitter 12 thereof. The millimeter wave of the wireless LAN transmitted from the millimeter wave transmitter 12 has an intensity distribution in which the intensity changes for each area around the millimeter wave transmitter 12 according to the antenna characteristic, and such an intensity distribution An intensity area A reflecting the above is formed. In this example, the strength area A is classified into three strength areas such as the strength areas A1, A2 and A3 in order from the center, the strength of the strength area A1 on the center side is the highest, and the strength of the strength area A2 is next It is high and the intensity of the intensity area A3 is the smallest.

When the user captures an area C in FIG. 2B using an out-camera, the captured image is displayed on the display of the terminal-side device 20, as shown in FIG. 2C. Further, based on the antenna characteristic acquired in FIG. 2A, the antenna characteristic of the millimeter wave transmitter 12 and the intensity area A are displayed in a format (graphic display etc.) visible to the user. By confirming this display, the user can grasp the intensity area A and thus the position where the millimeter wave intensity of the wireless LAN is high.

Also, when the user performs a predetermined operation (for example, switching from an out-camera to an in-camera on the surface of the display) from the state of FIG. 2C, as shown in FIG. In order to conform to the antenna characteristics of the wave transmitter 12, a movement direction indication S indicating a movement direction (including position, direction, inclination, etc.) for moving the terminal device 20 is output and displayed. By moving the terminal device 20 in accordance with the movement direction instruction S, the user can position the terminal device 20 in an optimal state for downloading an image from the camera device 10. Here, the “position” corresponds to the optimum download position 107 in FIG. 1, but the “position” is not only a place to which the terminal device 20 is moved, but also the inclination of the terminal device 20. It may also include the attitude of the device 20 itself.

3A and 3B are diagrams showing the terminal side device 20. FIG. 3A is a block diagram showing a schematic configuration of the terminal side device 20. FIG. 3B is a diagram showing the terminal side device 20 corresponding to FIG. It is a conceptual diagram which shows the state which exists. A specific example of the terminal-side device 20 is an electronic device including a portable terminal such as a personal computer or a tablet, but the type of the electronic device to which the present invention is applied is not particularly limited. The terminal device 20 includes an antenna 21, a communication unit 22, a camera 23, an identification information acquisition unit 24, a relative position calculation unit 25, an optimum position calculation unit 26, an attitude calculation unit 27, and a movement direction determination unit 28 and an output unit 29.

The antenna 21 and the communication unit 22 download the image information captured by the monitoring camera 11 from the camera apparatus 10 by the millimeter wave of the wireless LAN transmitted from the millimeter wave transmitter 12 of the camera apparatus 10. Image information generally has a large capacity, and it is desirable to download it at the optimal download position 107 (FIG. 1) where the communication environment is good. For this reason, the communication unit 22 wirelessly inquires of the external antenna characteristic database 14 by radio about the identification number ID (identification information) for identifying the millimeter wave transmitter 12 acquired by the identification information acquisition unit 24 described later. The antenna characteristics of the wave transmitter 12 are acquired. The antenna 21 and the communication unit 22 may be configured by a unit separate from the terminal-side device 20 as a millimeter wave receiver to be paired with the millimeter wave transmitter 12. The identification number ID is typically a model number of the millimeter wave transmitter 12, and the antenna characteristic database is provided by the manufacturer of the millimeter wave transmitter 12. However, since the antenna characteristics that can be identified from the model number are based on the specifications of the millimeter wave transmitter 12, the influence of a shield or the like existing in the real environment, the position / angle of the antenna when installing the camera-side device 10 It is difficult to obtain information on antenna characteristics when it is uniquely changed. Therefore, when a special installation environment or unique customization is performed, an ID capable of individually identifying the millimeter wave transmitter 12 such as a MAC address is used as an identification number ID, or a measurement result in a real environment May be reflected in the antenna characteristic database.

The camera 23 is an imaging device which images the millimeter wave transmitter 12 of the camera side device 10 installed outdoors etc., as shown to FIG. 2A and FIG. 2C, and may be an image pick-up element etc. FIG. The identification information acquisition part 24 extracts the feature point of the millimeter wave transmitter 12 from the picked-up image image | photographed with the camera 23, as shown to FIG. 2A, and acquires the identification number ID. The identification number ID is stored, for example, in a storage device (not shown) of the terminal device 20 in association with the feature point of the millimeter wave transmitter 12. Of course, the terminal device 20 may acquire the identification number ID from an external database.

In order to obtain the identification number ID, the information obtained by the camera 23 may be a feature point that characterizes the target millimeter wave transmitter 12, such as the corner portion P1 as shown in FIG. 2A and the LED lamp position P2. It may be other types of information. For example, the camera 23 is a mark such as a bar code attached to the millimeter wave transmitter 12, the outer shape of the device such as the shape of the front panel of the millimeter wave transmitter 12, light such as a polarization signal of an LED lamp The identification information acquisition unit 24 can also acquire an identification number ID by acquiring a signal or the like. In addition, the camera 23 photographs peripheral objects (buildings, telephone poles, signs, trees, street lights, etc.) present around the camera-side device 10, and the identification information acquisition unit 24 acquires an identification number ID from this photographed image. It can also be done. The identification information for identifying the millimeter wave transmitter 12 for acquiring the identification information is stored in association with the identification number ID of the millimeter wave transmitter 12 in an antenna characteristic database described later.

Further, in the above-described example, the identification information acquisition unit 24 acquires the identification number ID based on the information captured by the camera 23. However, the identification information acquisition unit 24 acquires the identification number ID of the millimeter-wave transmitter 12 based on information such as WiGig, Bluetooth, WiFi (all registered trademarks) emitted by the camera-side device 10 and information such as GPS position information. You may The identification information for identifying the millimeter wave transmitter 12 for acquiring the identification information is also stored in association with the identification number ID of the millimeter wave transmitter 12 in the antenna characteristic database described later.

The relative position calculation unit 25 calculates the relative positional relationship between the millimeter wave transmitter 12 and the terminal device 20 from the image captured by the camera 23. Although this relative positional relationship includes the distance and angle between the millimeter wave transmitter 12 and the terminal device 20, since the millimeter wave transmitter 12 is fixed, substantially at the time of shooting It can be said that the position of the terminal device 20 at

As described above, the optimum position calculation unit 26 has the antenna characteristic of the identification number ID of the millimeter wave transmitter 12 obtained by the communication unit 22 inquiring to the external antenna characteristic database 14, and the terminal side device 20. From the relationship with the antenna characteristics, the intensity of the millimeter wave is high, and the optimal positional relationship with suppressed propagation loss is calculated.

The attitude calculation unit 27 calculates the terminal attitude such as the direction and inclination of the terminal-side apparatus 20 based on an attitude detection device that detects the attitude of the terminal-side apparatus 20 such as a gyro sensor or an acceleration sensor.

The movement direction determination unit 28 performs 1) the optimum positional relationship between the millimeter wave transmitter 12 and the terminal device 20 calculated by the optimum position calculation unit 26, and 2) the millimeter wave transmission calculated by the relative position calculation unit 25. The actual positional relationship between the machine 12 and the terminal device 20 is collated with the terminal posture such as the direction and inclination of the terminal device 20 calculated by the posture calculation unit 27. Then, the movement direction determination unit 28 calculates the difference from the position at the time of shooting of the terminal device 20 to the optimum download position 107 from this collation, and moves the terminal device 20 to the optimum download position 107 from this difference. Determine the direction.

The output unit 29 corresponds to, for example, the display of the terminal device 20, and the camera 23 captures an image of the movement direction instruction S (see FIGS. 2D and 3B) generated based on the difference calculated by the movement direction determination unit 28. Compose and display an image. In the example of FIG. 3B, the movement direction instruction S includes a direction instruction S1 indicating a direction toward the optimum download position 107 and an inclination instruction S2 indicating an optimum inclination of the terminal device 20, but the aspect of the movement direction instruction S is There is no particular limitation.

By moving the terminal device 20 to the optimum download position 107 while referring to the moving direction instruction S, the strength is strong and the propagation loss is suppressed, and the image information taken by the monitoring camera 11 from the camera device 10 is smoothed. Can be downloaded to

FIG. 4A is a conceptual view showing the antenna characteristic of the millimeter wave transmitter 12, and FIG. 4B is a view showing an example of the antenna characteristic database (DB) 14 to which the terminal side device 20 (the communication unit 22) refers. FIG. 4A shows an example in which the strength areas of the millimeter wave band wireless LAN transmitted from the millimeter wave transmitter 12 are classified into three strength areas, that is, strength areas 1, 2 and 3. Each intensity area extends in a predetermined shape (conical in this example) along the x-axis, y-axis, and z-axis, and by identifying the intensity for each axis, the antenna as shown in FIG. 4B The characteristic database 14 is created in advance.

FIG. 5 is a flowchart for explaining the operation of the terminal device 20. First, the camera 23 captures an image of the millimeter wave transmitter 12 to obtain a captured image (step S1). Then, the identification information acquisition unit 24 analyzes the captured image, and acquires the identification number ID of the millimeter wave transmitter 12 (step S2).

Next, the communication unit 22 transmits the identification number ID to the external antenna characteristic database 14, inquires and receives an antenna characteristic corresponding to the identification number ID (step S3). The relative position calculation unit 25 calculates the relative positional relationship between the millimeter wave transmitter 12 and the terminal device 20 from the photographed image, that is, the position of the terminal device 20 at the time of photographing (step S4).

Next, the optimum position calculation unit 26 calculates the optimum positional relationship between the antenna characteristics of the millimeter wave transmitter 12 acquired by the communication unit 22 and the antenna characteristics of the terminal device 20 (step S5). ). Then, the movement direction determination unit 28 calculates the difference between the shooting position of the terminal device 20 and the optimum download position 107, and determines the movement direction for moving the terminal device 20 to the optimum download position 107 from this difference. Do.

Here, if there is no difference, that is, if the terminal device 20 is at the optimum download position 107, the processing is ended (step S7; Yes). On the other hand, when there is a difference, the terminal unit 20 is not at the optimum download position 107 (step S7; No), and the output unit 29 outputs (displays) the moving direction instruction S (step S8).

As described above, the terminal device 20 of the present disclosure can acquire antenna characteristics corresponding to the identification number ID such as identification information for identifying the millimeter wave transmitter 12. Then, in order to conform to the antenna characteristic, specifically, the movement direction in which the terminal device 20 is moved to the optimum download position 107 including its posture is determined, and output is made using a display or the like. Since the user can move the terminal device 20 to the optimum download position 107 while referring to the movement direction instruction corresponding to the movement direction, smooth download is possible even for large-capacity data like image information. Is realized.

With regard to the above-described procedure, the control unit, which is hardware configured mainly by a processor or the like that controls the operation of the terminal device 20, executes a software program in which a predetermined procedure is stored in a storage device or the like (not shown). Load and execute. Therefore, the control unit can mainly take on the functions of the identification information acquisition unit 24, the relative position calculation unit 25, the optimum position calculation unit 26, the posture calculation unit 27, and the movement direction determination unit 28.

In the above embodiment, the terminal device 20 receives the identification number ID and the data of the antenna characteristic linked to the identification number ID from the antenna characteristic database (see FIG. 4B) on the external network. However, the terminal device 20 may have a storage device in which the antenna characteristic database is stored in advance, and the antenna characteristic may be acquired by collating with the identification number ID acquired by the identification information acquisition unit 24.

Moreover, the information which the terminal device 20 tries to download is not necessarily limited to the image information, and the transmitter that transmits the information is not limited to the millimeter wave transmitter. In the above-described embodiment, one optimum download position 107 is present, but there may be a plurality. In this case, among the plurality of optimum download positions 107, the one closest to the terminal device 20 may be selected.

Moreover, in the above-mentioned embodiment, although the camera side apparatus 10 was demonstrated as what contains the surveillance camera 11, it is not restricted to this. The camera side device 10 may be realized as another device connectable to the monitoring camera 11.

Further, in the above-described embodiment, the relative position calculator 25 calculates the relative positional relationship between the millimeter wave transmitter 12 and the terminal device 20 from the captured image captured by the camera 23. Not limited to this. When the position of the millimeter wave transmitter 12 and the position of the terminal device 20 are obtained by other means such as GPS provided in each device, the relative positional relationship may be calculated based on the information. Good. In this case, for example, the power consumption by the positioning in each device can be suppressed by starting the positioning by the GPS or the like triggered by the recognition of the feature point of the millimeter wave transmitter 12 by the terminal device 20.

Moreover, in the above-mentioned embodiment, although relative position operation part 25 was equipped in the imaging device side, it is not restricted to this. The terminal device 20 may calculate the relative positional relationship.

In addition, although the output unit 29 is the display of the terminal device 20 in the above-described embodiment, the present invention is not limited to this. As long as the movement direction instruction S can be output in a manner that can be recognized by the user, any form of output is acceptable. Specifically, voice and vibration can be considered.

Moreover, although the above-mentioned embodiment was described using the expression "wireless LAN" which named Wifi, WiGig (all are registered trademarks) etc. generically, these are only an example. Instead of the wireless LAN, another wireless communication may be used. As another example of wireless communication, for example, cellular communication such as LTE can be considered. That is, any wireless communication may be used for the portion described using the expression “wireless LAN” in the specification of the present application, regardless of the wireless scheme or connection configuration (P2P, one-to-many, etc.), The size of the network is not limited to a small network represented by the word "LAN".

Moreover, in the above-mentioned embodiment, when making the terminal side apparatus 20 download image information, although WiGig (trademark) was used, it is not restricted to this. Other communication methods are available as long as high-speed communication is possible, such as in the millimeter wave band, but the relative position and angle between the transmitter and receiver are likely to affect propagation loss. It does not matter.

Also, each functional block used in the description of the above-described embodiment is typically implemented as an LSI that is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include some or all. Although an LSI is used here, it may be called an IC, a system LSI, a super LSI, or an ultra LSI depending on the degree of integration.

Further, the method of circuit integration is not limited to LSI's, and implementation using dedicated circuitry or general purpose processors is also possible. After the LSI is manufactured, a programmable field programmable gate array (FPGA) may be used, or a reconfigurable processor may be used which can reconfigure connection and setting of circuit cells in the LSI.

Furthermore, if integrated circuit technology comes out to replace LSI's as a result of the advancement of semiconductor technology or a derivative other technology, it is naturally also possible to carry out function block integration using this technology. The application of biotechnology etc. may be possible.

As mentioned above, although embodiment of the terminal side apparatus which concerns on this indication with reference to drawings, and a movement direction indication method was described, this indication is not limited to this example. It is obvious that those skilled in the art can conceive of various modifications, alterations, replacements, additions, deletions and equivalents within the scope of the claims, and it is needless to say It is understood that the present invention belongs to the technical scope of the present disclosure.

The terminal side device and the moving direction instruction method according to the present disclosure can be applied to a terminal having a function of downloading large-capacity information such as image information obtained by photographing with a camera via a wireless LAN or the like.

1 Image Information Download System 10 Camera Side Device 11 Surveillance Camera 12 mm Wave Transmitter (Transmitter)
13 position information server 20 terminal side device 21 antenna 22 communication unit 23 camera (imaging device)
24 identification information acquisition unit 25 relative position calculation unit 26 optimum position calculation unit 27 attitude calculation unit 28 movement direction determination unit 29 output unit 106 receivable area 107 optimum download position

Claims (10)

A terminal device capable of communicating with a transmitter;
A control unit that acquires an antenna characteristic of the transmitter corresponding to identification information for identifying the transmitter, and determines a moving direction in which the terminal device is moved so as to conform to the antenna characteristic;
An output unit that outputs a movement direction instruction corresponding to the movement direction;
A terminal device comprising: The terminal side apparatus according to claim 1, wherein
The terminal side apparatus, wherein the output unit outputs the antenna characteristic in a visible format. The terminal side apparatus according to claim 1, wherein
The control unit determines the movement direction based on the strength of the antenna characteristic.
Terminal device. The terminal side apparatus according to claim 3, wherein
The control unit determines a moving direction in which the terminal device is moved toward the position where the strength is the highest.
Terminal device. The terminal side apparatus according to claim 1, wherein
It further comprises an imaging device,
The control unit extracts feature points of the transmitter from a captured image captured by the imaging device, and acquires the identification information based on the feature points.
Terminal device. The terminal side apparatus according to claim 1, wherein
The control unit calculates an optimum position for communication with the transmitter based on the antenna characteristic of the transmitter and the antenna characteristic of the terminal side apparatus, and based on the optimum position and the current position of the terminal side apparatus. , Determine the moving direction,
Terminal device. The terminal device according to claim 6, wherein
It further comprises an imaging device,
The control unit calculates the position of the terminal-side device at the time of shooting from the shot image shot by the imaging device.
Terminal device. The terminal side apparatus according to claim 7, wherein
It further comprises an attitude detection device that detects the attitude of the terminal device.
The control unit determines the movement direction also based on the posture detected by the posture detection device.
Terminal device. The terminal side apparatus according to claim 1, wherein
The output unit is a display of the terminal device.
Terminal device. It is a movement direction instruction | indication method which instruct | indicates the movement direction which moves the terminal side apparatus which can communicate with a transmitter, Comprising: The control part of a terminal side apparatus is
Obtaining antenna characteristics of the transmitter corresponding to identification information for identifying the transmitter;
Determine a moving direction for moving the terminal device so as to conform to the antenna characteristic;
Causing the output unit to output a moving direction instruction corresponding to the moving direction,
Movement direction indication method.

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