JP5073782B2 - Information transmission method, apparatus and system - Google Patents

Description

  The present invention relates to information processing, and more particularly to a method, apparatus, and system for transmitting information associated with a spatial area to an object.

  Location information is a kind of basic context for specifying a geographical relationship between a user and an environment, and this enables a deeper understanding of user behavior. In recent years, methods and systems for providing location information have received more and more attention. In particular, it has attracted more attention for indoor environments and urban environments.

Currently, there is an increasing market demand for real-time accurate location tracking in various applications such as offices, medical institutions, mines, subways, smart buildings, or hotels.
In applications based on a lot of position information, it is usually necessary to divide a space into a plurality of areas called spatial areas or spatial grids.
When the user is located in a specific spatial area, the information distribution system automatically distributes information associated with the spatial area to the user's portable terminal by detecting the position of the user. As a result, it provides a comfortable experience to the user.

For example, when a tourist tours a strange city, delivering information about nearby hotels and restaurants to the tourist according to the location of the tourist brings convenience to the tourist.
When the visitor visits the museum, each exhibited exhibit can be considered to be in a spatial area corresponding to the exhibited exhibit.
If the exhibitor approaches the exhibit displayed for viewing, information on the exhibited exhibit is distributed to the viewer based on the location of the exhibitor.
When a customer shop at a shopping mall, each product can be considered to be in a spatial area corresponding to that product. When a customer approaches an item of interest, information about the item is delivered to the customer's mobile phone or public public display.

Bluetooth and WPA Push Based Location-Aware Mobile Advertising System L. Aalto, N. Gothlin, J. Korhonen and T. Ojala, In Proc of 2nd ACM MOBISYS, Boston, MA, June , 2004

So far, several methods for distributing information associated with a spatial area to an object have already been proposed.
However, these related art methods are very limited, for example, suitable for relatively low positioning accuracy.
If an object frequently traverses a spatial area in a system with relatively high positioning accuracy, the information delivered to the object will be frequently switched, which will have an undesirable effect on the user.

  Therefore, there is a need in the art, particularly in the art, for technical solutions adapted to deliver information to objects in a system with high positioning accuracy.

  The object of the present invention is to provide a technical solution used to deliver to an object information associated with a spatial area, in particular information suitable for delivering information to an object in a system with high positioning accuracy. It is to provide a distribution method, apparatus, and system.

An information distribution method according to the present invention is an information distribution method by an information distribution apparatus, in which a reception unit receives a position parameter of an object in a space including one or more spatial areas, and the distribution unit includes each space. Distributing information associated with the spatial area to the object by using the position parameter of the object and the boundary of each spatial area based on the degree of divergence of the area, and an immediate divergence determining means included in the distribution means However, based on the position parameter of the object and the boundary of each spatial area, an immediate divergence degree determining step for determining an immediate divergence degree of each spatial area, and a cumulative divergence degree acquisition means provided in the distribution means are provided for each spatial area. The cumulative divergence acquisition step for acquiring the cumulative divergence of each spatial area based on the immediate divergence of And a distribution control means included in the distribution means includes a distribution control step for controlling distribution to the object based on the cumulative degree of separation, and the degree of divergence includes the immediate degree of divergence and the degree of cumulative divergence .

The information distribution apparatus according to the present invention is configured to receive a position parameter of an object in a space including one or more spatial areas, and based on the degree of divergence between the spatial areas, the position parameter of the object and the boundary between the spatial areas. Using a distribution means for distributing information associated with the spatial area to the object , the divergence degree includes an immediate divergence degree and a cumulative divergence degree, and the distribution means includes the position parameter of the object and Based on the boundary of each spatial area, an immediate divergence determination means for determining an immediate divergence degree of each spatial area, and a cumulative divergence of each spatial area at the present time based on the immediate divergence degree of each spatial area A cumulative divergence acquiring unit that acquires the degree, and a distribution control unit that controls distribution to the object based on the cumulative peeling degree .

  Other features and advantages of the present invention will become apparent from the preferred embodiments with reference to the accompanying drawings.

  ADVANTAGE OF THE INVENTION According to this invention, the information delivery method, apparatus, and system suitable for delivering information to an object in the system which has high positioning accuracy can be provided.

Other objects and effects of the present invention will become clearer and more easily understood with a more comprehensive understanding of preferred embodiments of the present invention by the description of the detailed description with reference to the accompanying drawings. Let's go.
It is a figure explaining the outline | summary of the delivery of the information linked | related with the space area with respect to the object by related technology. 1 is a block diagram of an information distribution system according to an embodiment of the present invention. It is a flowchart explaining the information delivery method by one embodiment of this invention. It is a block diagram of the information delivery apparatus by one embodiment of this invention. It is a flowchart explaining the information delivery method by one embodiment of this invention. It is a figure explaining the outline | summary of the space area by one embodiment of this invention. It is a figure explaining the outline | summary of the delivery of the information linked | related with the space area with respect to the object by one embodiment of this invention. It is a block diagram of the information delivery apparatus by other embodiment of this invention. It is a flowchart explaining the information delivery method by other embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. It should be appreciated that these embodiments are described by way of example and do not limit the scope of the invention.

  FIG. 1 is a diagram showing an outline of provision of information associated with a spatial area for an object according to related technology.

Non-Patent Document “Bluetooth and WAP Push Based Location-Aware
Mobile Advertising System) L. Aalto, N. Gothlin, J. Korhonen and T.
Ojala, In Proc of 2nd ACM MOBISYS, Boston, MA, June, 2004 proposes an accurate location-based information provision system that employs Bluetooth positioning and Wireless Application Protocol (WAP). FIG. 1 shows an information distribution method based on this certain position. This method is very sensitive to the real-time position of the object.

FIG. 1 shows, by way of example, two spatial areas (namely, spatial area 1 and spatial area 2) and a trajectory of object movement between the two spatial areas.
In 101, the object reaches the boundary of the spatial area 1 from the outside, and then enters the spatial area 1. At that time, distribution of information associated with the spatial area 1 for the object starts. Thereafter, the object moves in the space area 1.
During the movement of the target in the space area 1, information associated with the space area 1 is always distributed to the target.
At 102, the object reaches the boundary from the inside of the spatial area 1 and consequently leaves the spatial area 1. At that time, distribution of the information associated with the space area 1 to the object is stopped. Thereafter, since the object does not enter any spatial area, information associated with any spatial area is not distributed to the object.
When the target enters the spatial area 2 at 103, distribution of information associated with the spatial area 2 to the target starts.
Thereafter, the target moves in the space area 2.
During the movement of the target in the space area 2, the information associated with the space area 1 is always delivered to the target.
When the target leaves the space area 2 at 104, distribution of information associated with the space area 2 to the target is stopped.
When the target enters the space area 1 again at 105, distribution of information associated with the space area 1 to the target starts again.
When the target leaves the space area 1 again at 106, the distribution of information associated with the space area 1 to the target is again stopped.
When the target enters the space area 2 again at 107, distribution of information associated with the space area 2 to the target starts again.
Finally, when the target leaves the spatial area 2 again at 108, the delivery of information associated with the spatial area 2 to the target is again stopped.

As can be seen from FIG. 1, information about which spatial area is distributed to the target is based on the position parameter of the target and the boundary of the spatial area.
When the target frequently crosses the boundary of a plurality of spatial areas, the distribution of information to the target is frequently switched as the target position changes. This can lead to an undesirable experience for the user.

The information providing method based on an accurate position as shown in FIG. 1 is information based on Bluetooth and GPS on the premise that the range of the spatial area in the system is relatively wide (for example, several tens of square meters to several square kilometers). Adapted to the provision system.
However, the method shown in FIG. 1 is not applicable to a highly accurate location-based information distribution system. This is because the spatial areas defined in a highly accurate location-based information providing system are relatively narrow and closely connected to each other.

For example, in informational applications for merchandise on shelves, merchandise is placed very closely on the shelves, and their spacing is only a few centimeters to tens of centimeters mail.
A very small spatial area is defined for each item only, and these spatial areas are closely connected to each other.
In such an application, when a user holding a signal transmitter (ie, an object) unconsciously passes through several spatial areas, if the user provides a method of providing information based on the accurate location so far, Even if the user does not feel interested in the products in these space areas, the user enters the space area corresponding to these products, so information associated with these products is distributed to the user's terminal.
Such information may be useless to the user and may cause the user to feel disliked for such use.

  FIG. 2 is a block diagram of an information distribution system 200 according to an embodiment of the present invention.

  As shown in FIG. 2, the information distribution system 200 is based on a signal transmitter 210 that is positioned on an object in space and configured to emit a distance measurement signal, and a distance measurement signal emitted from the signal transmitter. The positioning device 220 configured to acquire the position parameter of the object, receives the position parameter of the object in the space, and based on the degree of divergence of each spatial area, the position parameter of the object and the boundary of each spatial area And a server 230 configured to deliver information associated with the spatial area to the object.

  An implementation example of the system 200 will be described in detail below.

First, the signal transmitter 210 can be installed on an object. For example, the user can hold the signal transmitter 210 by hand. Further, the signal transmitter 210 can transmit a distance measurement signal.
In one example, the server 230 receives the ranging signal transmitted by the signal transmitter 210 and the position parameter of the positioning device 200 that receives the ranging signal, and then the server 230 generates a signal based on the received data. The position parameter of the device 210 is determined.
In another example, the positioning device 220 determines the position parameter of the signal transmitter 210 based on the distance measurement signal transmitted by the signal transmitter 210 and its own position parameter.
The signal generator 210 itself is well known in the art of the present invention and will not be described in detail here.

The positioning device 220 can be installed anywhere in the space.
As an example, the positioning device 220 is installed at the top of the space. The initial installation location in that case is arbitrary, that is, it may be installed at any position on the top.

The positioning device 220 receives the ranging signal from the signal transmitter 210, and the server 230 receives the ranging signal transmitted by the signal transmitter 210 and the position parameter of the positioning device 220 itself that receives the ranging signal in the space. In order to determine the position of the signal transmitter 210, the distance measurement signal and the position parameter of the positioning device 220 itself are transmitted to the server 230.
In another embodiment, the positioning device 220 can determine the position parameter of each position point in the position point sequence based on the distance measurement signal transmitted by the signal transmitter 210 and its own position parameter.

  It should be appreciated that the signal transmitter 210 and the positioning device 220 need not be installed in order. That is, the signal transmitter 210 and the positioning device 220 may be disposed at the same time, or the positioning device 220 may be disposed first, and then the signal transmitter 210 may be disposed at a spatial feature point.

The server 230 includes an information distribution device 240. This information distribution device 240 uses the object position parameter and the boundary of each spatial area based on the receiving means 241 for receiving the position parameter of the object in the space and the degree of divergence of each spatial area, thereby And a distribution unit 242 for distributing information associated with the spatial area.
The server 230 further receives the distance measurement signal transmitted by the signal transmitter 210 and the position parameter of the positioning device 220 that receives the distance measurement signal, and as a result, the position of the signal transmitter 210 based on the received data. Means for determining a parameter;

  FIG. 3 is a flowchart for explaining an information distribution method according to the embodiment shown in FIG.

  In step 301, a positional parameter of an object in space is received.

In step 302, information associated with the spatial area is distributed to the object by using the position parameter of the object and the boundary of each spatial area based on the degree of divergence of each spatial area.
The present invention provides various embodiments for distributing information to objects based on the degree of divergence.

In one embodiment of the present invention, the degree of divergence includes an inner boundary factor and an outer boundary factor. Then, the step of distributing the information associated with the spatial area to the object is based on the boundary of each spatial area and the internal boundary factor and external boundary factor of each spatial area. Acquiring an external boundary includes starting to deliver information associated with the spatial area to the object until the object crosses the virtual external boundary when the object enters the virtual internal boundary of the spatial area.
4 to 7 show an information distribution apparatus and method according to such an embodiment, and details thereof will be described below.

In another embodiment of the present invention, the divergence includes an immediate divergence and a cumulative divergence.
The step of distributing the information associated with the spatial area to the object is to determine the immediate divergence of each spatial area based on the position parameter of the object and the boundary of each spatial area, and the immediate divergence of each spatial area. To obtain the current cumulative divergence of each spatial area, to determine the maximum cumulative divergence by sorting the cumulative divergence, and to end the maximum cumulative divergence If it is greater than the value, stop delivering the same information as the information delivered at the previous time from the current time to the object, and if the maximum cumulative divergence is greater than the delivery threshold, Delivering information associated with the spatial area corresponding to the maximum cumulative divergence to the object.
FIG. 8 and FIG. 9 respectively show an apparatus and method for such information distribution, the details of which will be described below.

In still another embodiment of the present invention, the divergence degree includes an internal boundary factor, an external boundary factor, an immediate divergence degree, and a cumulative divergence degree.
The step of distributing information associated with the spatial area to the object includes the virtual inner boundary of each spatial area and (or based on the boundary boundary of each spatial area and the internal boundary factor and / or external boundary factor of each spatial area. Or) obtaining a virtual external boundary, determining the immediate divergence of each spatial area based on the object's positional parameters and the virtual internal and / or virtual external boundary of each spatial area, and each spatial area Based on the immediate divergence level, obtain the cumulative divergence level of each spatial area at the present time, determine the maximum cumulative divergence level by sorting the cumulative divergence levels, and determine the maximum cumulative divergence level. If the degree is larger than the end threshold, the same information delivered at the previous time is delivered to the object from the current time. Stopping, if the maximum cumulative divergence is greater than the distribution threshold, from now on, delivering information associated with the spatial area corresponding to the maximum cumulative divergence to the object .

  FIG. 4 is a block diagram of an information distribution apparatus 400 according to an embodiment of the present invention.

The information distribution apparatus 400 includes a receiving unit 410 that receives a position parameter of an object in a space (a space includes one or more space areas), and the position parameter of the object and each space based on the degree of divergence of each space area. Distribution means 420 for distributing information associated with the spatial area to the object by using the boundary of the area is provided.
The distribution unit 420 includes an internal boundary / external boundary acquisition unit 421 that acquires a virtual internal boundary and a virtual external boundary of each spatial area based on a boundary of each spatial area and an internal boundary factor and an external boundary factor of each spatial area. Determining means 422 that starts delivering information associated with the spatial area to the object until the object crosses the virtual external boundary when the object enters the virtual internal boundary of the spatial area.

FIG. 5 is a flowchart illustrating an information distribution method according to an embodiment of the present invention.
In the present embodiment, the true boundary of the spatial area as used in the related art is not used as a criterion for distributing information associated with the spatial area to the object. Instead, virtual internal and virtual external boundaries as shown in FIG. 6 are used.
Here, the timing of starting the distribution of information to the object and ending the distribution of information to the object (that is, the information distribution start timing and the information distribution end timing) is the relationship of the object position with respect to the virtual outer boundary and the virtual inner boundary. Determined by.
The information distribution method shown in FIG. 5 is performed by the information distribution apparatus 400 shown in FIG.

  In step 501, virtual internal and virtual external boundaries of each spatial area are obtained based on the boundaries of each spatial area and the internal and external boundary factors of each spatial area.

  FIG. 6 is a diagram showing an outline of a spatial area according to an embodiment of the present invention.

According to the embodiment shown in FIG. 6, the virtual inner boundary 601 and the virtual outer boundary 603 of the spatial area are determined by the boundary 602 of the spatial area based on the degree of divergence of the spatial area.
In the present embodiment, the degree of divergence of the spatial area includes an internal boundary factor and an external boundary factor. The boundary 602 is the real boundary of the spatial area.
The virtual inner boundary 601 is determined based on the inner boundary factor and the boundary 602.
The virtual external boundary 603 is determined based on the external factor and the boundary 602.

For example, the real boundary of the spatial area is
A = bound (x, y, z) (1)
Can be expressed as
Here, bound (x, y, z) represents a boundary function of the spatial area in the three-dimensional coordinate system.

ここで、l_x、l_y、l_zは、それぞれ、空間エリアの外部境界ファクターであり、３次元座標系のx, y, z軸方向に沿った拡大係数を示す。外部境界ファクターl_x、l_y、l_zが大きいほど、仮想外部境界は大きくなる。 A virtual outer boundary is a virtual boundary that includes a spatial area and is greater than or equal to a real boundary. A virtual external boundary 603 shown in FIG. 6 is outside the boundary 602.
The virtual outer boundary can be expressed as follows:

Here, l _x , l _y , and l _z are external boundary factors of the spatial area, respectively, and indicate enlargement factors along the x, y, and z axis directions of the three-dimensional coordinate system. The larger the outer boundary factors l _x , l _y , and l _z , the larger the virtual outer boundary.

A virtual inner boundary is a virtual boundary that is less than or equal to the true boundary.
A virtual internal boundary 601 shown in FIG. 6 is inside the boundary 602.
The virtual inner boundary can be expressed as follows:
A ^VSI = Bound (s _x x, s _y y, s _z z)
(s _x , s _y , s _z ≧ 1) (3)
Where s _x , s _y , s _z
Are internal boundary factors of the spatial area, and indicate reduction factors along the x, y, and z axis directions of the three-dimensional coordinate system. Internal boundary factors s _x , s _y , s _z
The larger the, the smaller the virtual inner boundary.

Basically, the inner and outer boundary factors are related to the positioning accuracy of the space.
If the positioning accuracy is higher (for example, 1 cm), the inner boundary factor and the outer boundary factor are closer to “1”.
Conversely, if the positioning accuracy is lower (for example, 1 m), the inner boundary factor and the outer boundary factor are much larger than “1”.
That is, the higher the positioning accuracy, the closer the inner boundary factor and the outer boundary factor are to “1”.

ここで、x_iは、オブジェクトの現在位置を示す。
オブジェクトが、仮想内部境界６０１（すなわち、A^VSI）内にいる時、オブジェクトは子エリアＴ１に位置する。
オブジェクトが仮想内部境界６０１の外側でかつ本当の境界６０２（すなわち、A）内にいる時、オブジェクトは子エリアＴ２に位置する。
オブジェクトが本当の境界６０２の外側でかつ仮想外部境界６０３（すなわち、A^VSO）内にいる時、オブジェクトは子エリアＴ３に位置する。
また、オブジェクトが仮想外部境界６０３の外にいる時、オブジェクトは子エリアＴ４に位置する。 The virtual inner boundary 601, the real boundary 602 and the virtual outer boundary 603 divide the spatial area into four child areas T1, T2, T3 and T4.

Here, x _i indicates the current position of the object.
When the object is within the virtual inner boundary 601 (ie, A ^VSI ), the object is located in the child area T1.
When the object is outside the virtual inner boundary 601 and within the real boundary 602 (ie, A), the object is located in the child area T2.
When the object is outside the real boundary 602 and within the virtual outer boundary 603 (ie, A ^VSO ), the object is located in the child area T3.
When the object is outside the virtual external boundary 603, the object is located in the child area T4.

  In step 502, a position parameter of an object in space is received.

As described above, the position parameter of the object in the space is determined by the positioning device 220 or determined by the server 230 according to the distance measurement signal transmitted by the signal transmitter held by the object and the position of the positioning device 220. be able to.
As the position parameter, the three-dimensional coordinates of the object in the space can be used.

  In step 503, it is determined whether the information distribution flag is equal to “1”.

This information distribution flag is an identifier for indicating whether or not information is transmitted to the object at the previous time point, and can be any character, number, or the like that can distinguish between “YES” or “NO”. It may be an identifier.
For example, the information distribution flag includes “1” and “0”, “YES” and “NO”, or “k” and “no” in Chinese characters, and “1” and “0” used in the present embodiment. It is not limited to.

In the present embodiment, the numbers “1” and “0” are used as information distribution flags to indicate that information is distributed to an object or information is not distributed to an object.
If the information distribution flag is “1”, it is determined that the information associated with a certain spatial area has been distributed to the object at the previous time point, and the process then proceeds to step 507.
If the information distribution flag is “0”, it is determined that the information associated with a certain spatial area has not been distributed to the object at the previous time point, and the process then proceeds to step 504.

  In step 504, it is determined whether the object enters the virtual internal boundary of the spatial area.

There are various ways to make such a determination.
For example, the distance between the object and the virtual internal boundary of each spatial area can be obtained based on the position parameter of the object received in step 502 and the virtual internal boundary of each spatial area. Based on the minimum value of these distances, the virtual internal boundary of the spatial area into which the object enters can be determined.
In another example, the average distance between the object and the keypoints within the virtual internal boundary of each spatial area is calculated by calculating the position parameter of the object received at step 502 and the number of keypoints within the virtual internal boundary of each spatial area. Can be obtained based on the spatial coordinates. Thereafter, based on the minimum value of these average distances, a virtual internal boundary of the spatial area into which the object enters can be determined.
It should be appreciated that one skilled in the art can perform the determination in step 504 according to the related art by various methods, and the method is not limited to the specific methods described above.

  If the object enters the virtual internal boundary of a certain spatial area, the process proceeds to step 505. Otherwise, the process ends.

  In step 505, the information distribution flag is set to “1”.

In step 503, it is determined that there is no information distributed to the object at the previous time point, and the information distribution flag is “1” because the object enters the virtual internal boundary of the spatial area at the current time as determined in step 504. Set to
The change of the information distribution flag from “0” to “1” means that information associated with the spatial area starts to be distributed to the object from the present time.

  In step 506, the information associated with the spatial area is distributed to the object, and then the process ends.

  In step 507, the spatial area associated with the information delivered to the object is determined.

If it is determined in step 503 that the information distribution flag is not “1”, it is determined in step 507 which spatial area the information is associated with according to the related area and identifier in the distributed information.
That is, it is possible to determine to which spatial region the information distributed to the object at the immediately preceding time point is associated with information.

  In step 508, it is determined whether the object crosses the virtual external boundary of the spatial area.

  There are several ways to determine whether an object crosses the virtual external boundary of a spatial area.

For example, it can be considered that the virtual external boundary is composed of a plurality of points.
The maximum distance between the object on the virtual external boundary and the point is calculated based on the position parameters of the object on the virtual external boundary of the spatial area and all points.
If the maximum value of the distance is larger than the distance between any two of all the points on the virtual external boundary, it can be determined that the object exceeds the virtual external boundary of the spatial area.

  It should be appreciated that one skilled in the art can perform the determination in step 508 according to the related art by various methods, and that method is not limited to the specific methods described above.

  If the object exceeds the virtual external boundary of the spatial area, processing proceeds to step 509. Otherwise, the process proceeds to step 506, and the distribution of the object information associated with the spatial area to the object is continued.

  In step 509, the distribution of information associated with the spatial area for the object is stopped and the information distribution flag is set to "0".

  Thereafter, the process ends.

  FIG. 7 is a schematic diagram illustrating an example in which information associated with a spatial area is distributed to an object by the information distribution method illustrated in FIG.

Table 1 shows the real-time position stream and the spatial state stream of the object. The real-time position stream shows the position parameters x _i of the objects in the spatial area at different times. Here, i = 1, 2,..., N−1, n represents an arbitrary time point among time points 1 to n.
The spatial state stream indicates in which child area T1, T2, T3, T4 of the spatial area the object is located at different times.

As shown in FIG. 7, after an object, from the child area T4 (corresponding to the x ₁ real-time location stream) via the T3, T2, it reaches the virtual internal boundary of the space area 1, the object, the child area enters the T1 (corresponding to x _w of real-time location stream), information associated with the space area 1 at the point 701 begins to be delivered to the object. Thereafter, since the object moves within the range of T1, T2, and T3, information associated with the spatial area 1 continues to be delivered to the object.
At point 702, the object reaches the virtual outer boundary and begins to enter child area T4 (corresponding to x _n-1 in the real-time position stream). At that time, distribution of information associated with the space area 1 to the object stops.

In this way, erroneous delivery of information can be avoided in an information delivery system based on a high-precision position.
For example, when a user (that is, an object) holding a signal transmitter unconsciously goes out of the boundary of the space area 1 in the process of moving in the space area 1, the information distribution apparatus of the present invention uses the space area for the object. The distribution of information associated with 1 is not immediately stopped. Instead, the information distribution device continues to distribute information to the user until the user crosses the virtual external boundary of the space area 1.
Even if the user enters the virtual external boundary of the spatial area 2 (even if it is a real boundary), as long as the user's position does not exceed the virtual external boundary of the spatial area 1, the information associated with the spatial area 2 The information associated with the spatial area 1 is distributed to the object.
In this way, in the case of high positioning accuracy, erroneous delivery of information caused by the user's unintentional entry into another spatial area is prevented.

  FIG. 8 is a block diagram of an information distribution apparatus 800 according to another embodiment of the present invention.

The information distribution apparatus 800 includes a receiving unit 810 for receiving a position parameter of an object in a space (where the space includes one or more spatial areas), and the degree of divergence between the spatial areas. A distribution unit 820 is provided for distributing information associated with the spatial area to the object by using the position parameter and the boundary of each spatial area.
The distribution unit 820 includes an immediate divergence determination unit 821 that determines an immediate divergence degree of each spatial area based on the position parameter of the object and the boundary of each spatial area, and based on the immediate divergence degree of each spatial area, Cumulative divergence degree calculating means 822 for acquiring the cumulative divergence degree of each spatial area at the present time, maximum value deciding means 823 for determining the maximum cumulative divergence degree by sorting the cumulative divergence degrees, and maximum If the cumulative divergence of is greater than the end threshold, the distribution of the same information as the information distributed at the previous time is stopped from the current time to the object, and the maximum cumulative divergence is If the value is larger than the value, a determination unit 824 that distributes to the object information associated with the spatial area corresponding to the maximum cumulative divergence degree from the present time is provided.

  Further, the immediate divergence determining means 821 further sets the immediate divergence of all the spatial areas to a predetermined negative value if the spatial area where the object is currently located is a spatial area associated with the immediately preceding information distribution start timing. If the spatial area where the object is currently located is not the spatial area associated with the information distribution start timing at the immediately preceding time, the immediate divergence of the spatial area where the object is currently located is predetermined. And a means for setting the immediate divergence of the spatial area other than the spatial area where the object is currently located to “0”.

  The cumulative divergence calculation means 822 further includes a means for calculating the sum of the cumulative divergence degree of each spatial area at the immediately previous moment and the immediate divergence degree of each spatial area at the present moment, and the total result is a predetermined maximum. Comparing with a value, means for obtaining a maximum value of the two values, and means for determining the maximum value as a cumulative divergence degree of each spatial area at the present time.

FIG. 9 is a flowchart illustrating an information distribution method according to another embodiment of the present invention.
The information distribution method according to the present embodiment finds the tendency of the movement of the object from the object position stream based on the immediately preceding information distribution start timing, thereby determining the information distribution end timing and the new information distribution start timing. .

In the embodiment of the present invention, the information distribution start timing indicates a point in time when information associated with a certain spatial area starts to be distributed to the object, and is associated with a certain spatial area from that point to the information distribution end timing of information. Information begins to be delivered to the object.
The information distribution end timing indicates a time point at which distribution of information associated with a certain spatial area ends, and distribution of information associated with a certain spatial area is stopped from that point.

In this embodiment, it is assumed that there are a total of M spatial areas indicated by {Ai, i = 1, 2,..., M} (where L is an arbitrary number between 1 and M). is there).
Further, assume that the object point is located in the x _w is the information distribution start timing for distributing information associated with spatial areas AL for the object.
Table 2 shows the real-time position stream and the object area index stream.
The real-time position stream shows the position parameters of the objects in the spatial area at different times. Here, i = 1, 2,..., N represents an arbitrary point in time from 1 to n.
The area index stream indicates in which spatial area the spatial areas A1, A2,..., AL,.

As shown in Table 2, the object is located in the space area AL at time x _w, objects before the other area of space (e.g., space area A3) so located, the information associated with the space area AL, At that time, it starts to be delivered to the object. That is, time corresponding to x _w is information distribution start timing of information associated with the spatial area AL.
As new position parameters of the object are received without interruption, the cumulative divergence (ADS: Accumulate) of each of the other spatial areas excluding the spatial area AL with respect to the spatial area AL
Departing Significance) is calculated according to this embodiment.

After the time the object is positioned at the position x _w, position stream, if outside this space area AL slightly (e.g., such slight off may be caused by the positioning error), the cumulative deviation degree is low Stay stable at the level. That is, it is considered that the user has not left the current information distribution area.

  If, at a certain point in time, the cumulative divergence corresponding to a certain spatial area exceeds the end threshold corresponding to the information distribution end timing, that point can be regarded as the information distribution end timing. At that time, distribution of information associated with the space area AL for the object is immediately terminated.

If, at a certain point in time, the cumulative divergence corresponding to a certain spatial area exceeds the distribution threshold corresponding to the information distribution start timing, that point can be regarded as a new information distribution start timing.
From that point on, information associated with a spatial area in which the cumulative divergence degree is greater than the distribution threshold value starts to be distributed.
It should be appreciated that the termination threshold is less than the delivery threshold.

  The information distribution method shown in FIG. 9 is realized by the information distribution apparatus 800 shown in FIG.

  In step 901, the immediate divergence of each spatial area is determined based on the position parameter of the object and the boundary of each spatial area.

In the present embodiment, the immediate divergence degree can be determined by the following method.
If the spatial area in which the object is currently located is a spatial area associated with the immediately preceding information distribution start timing, the immediate divergence degree of all the spatial areas is set to a predetermined negative value.
If the spatial area where the object is currently located is not the spatial area associated with the immediately preceding information distribution start timing, the immediate divergence degree of the spatial area where the object is currently located is set to a predetermined positive value, and the object is Assume that the immediate divergence degree of a spatial area other than the spatial area located at is “0”.

The immediate divergence of the spatial area is a relative concept. Specifically, immediate deviance reflects a relationship spatial area A _i for the spatial area A _L. Here, i = 1,... M and i ≠ L.
For example, the immediate divergence degree of the spatial area A _i with respect to the spatial area A _L (hereinafter referred to as the immediate divergence degree of the spatial area A _i ) is expressed as DS below.

In Expression (4), α and β are both positive values determined in advance.
Therefore, In the case of (a), i.e., if the object space area A _i which is located at the present time, a space area A _L related to information distribution start timing at the time just before (i.e., i = L), the space The immediate deviation degree of the area A _i is a predetermined negative value −α, and at the same time, the immediate deviation degree of the space area A _L is set to a predetermined negative value −α.
In the cases (b) and (c), that is, the spatial area A _i where the object is currently located is different from the spatial area A _L related to the information distribution start timing at the previous time (ie, i = 1, ... M and i ≠ L), the immediate divergence degree of the spatial area A _i is a predetermined positive value β, and the immediate divergence degree of the spatial area A _j is “0” (where j = 1 , ... M, j ≠ L and j ≠ i). At the same time, immediate divergence of the spatial area A _L is set to "0".

In embodiments, immediate divergence of the space area is a relative concept, reflect a relationship between the spatial area A _i for the spatial area A _L, immediate divergence of the spatial area A _L (i.e., the space area The specific value of the immediate deviation degree of AL with respect to itself may be any value, and this does not affect the information distribution method of the present invention.
Further, in this embodiment, the immediate deviation of the spatial area A _L, there is no need to set, and the immediate deviation of the spatial area A _i on the spatial area A _L, using Equation (4) Is determined only by

In this embodiment, before the first information distribution timing is reached, since there is no space area A _L related to information distribution start timing of the time just before, immediate divergence of each space area, the formula ( It should be understood that the calculation is made only according to (b) and (c) of 4).
That is, when an object is located in a certain spatial area, the cumulative divergence of the spatial area increases until the cumulative divergence of the spatial area exceeds the distribution threshold.

  In step 902, the current cumulative divergence of each spatial area is obtained based on the immediate divergence of each spatial area.

  In the present embodiment, the total of the cumulative divergence degree of the spatial area at the previous time point and the immediate divergence degree of the current spatial area is obtained, and the total result is compared with a predetermined maximum value. The maximum value is acquired, and the maximum value is determined as the cumulative divergence degree of each spatial area at the present time.

In the present embodiment, the cumulative deviation degree is, just before the time point information distribution start timing (i.e., time corresponding to x _w) and a starting point, the time window for the end point of the position parameters of the newly received object, aggregate And calculated.

In this embodiment, the immediately preceding time information delivery start timing (i.e., time corresponding to x _w), cumulative deviance ADS corresponding to the spatial area other than the area of space A _L is set to all "0" Is done. That is,
ADS (Ai, x _w ) = 0, ∀Ai, (i = 1, ..., M), i ≠ L
(Five)
Whenever the position parameter x _{n of the} object is received, the cumulative divergence ADS in the time zone from x _w to x _n uses the equation (6), so that each spatial area A _i other than the spatial area A _{L is obtained.} (I = 1,... M and i ≠ L)
ADS (Ai, x _n ) = max {0, ADS (Ai, x _n-1 ) + DS (A _i | A _L , x _n )}, ∀Ai, (i = 1, ..., M), i ≠ L (6)

  In equation (6), first, the sum of the immediate divergence DS determined at the present time and the cumulative divergence at the previous time is obtained, and then the total result is compared with “0”. Further, the maximum value of the two is determined as the cumulative divergence degree at the present time.

  In step 903, the maximum cumulative divergence is determined by sorting each cumulative divergence.

  According to step 902, the current cumulative divergence of the M spatial areas is obtained, and the M cumulative divergences are sorted to obtain a maximum value.

(7) According to the position parameter of the object is received continuously, cumulatively deviance ADS (A _i, x _w) of the spatial area at each time point, the space areas other than the space area _{A L A i (i = 1} , … M and i ≠ L), which constitutes the time series ADS (A _i ) of cumulative divergence.
Specifically, cumulative deviance ADS space areas other than the space area A _L at each time point (A _i, x _w) is expressed as follows.

(7)

In Expression (7), each line in Expression (7) represents the cumulative divergence ADS (A _i ) of each spatial area at each time point. Each column represents the cumulative divergence level ADS (x _n ) of each spatial area at the same time point.
From equation (7), if the trend of real-time location stream objects away from the space area A _L, to move towards the other space areas A _i, ADS cumulative deviation degree of the spatial area A _i (Ai) is increases monotonically, if concentrated most real-time location stream objects in the space near the area a _L, the cumulative deviation of the other space areas is can be seen that smaller.

From the above, the maximum value of the cumulative divergence degree of each spatial area at each time point is calculated as follows.

  In step 904, it is determined whether the maximum cumulative divergence is greater than an end threshold.

If the maximum cumulative divergence M (x _n ) is larger than the end threshold value, the time point can be regarded as the information distribution end timing.
From that point, the distribution of information related to the spatial area A _L to the object is stopped. Thereafter, the processing proceeds to step 905.

If the maximum cumulative divergence M (x _n ) is not greater than the end threshold value, the process ends.

  In step 905, the distribution of the same information as the information distributed to the object at the immediately previous time is stopped from the current time.

  In step 906, it is determined whether the maximum cumulative divergence is greater than a distribution threshold.

If the maximum cumulative divergence degree M (x _n ) is larger than the distribution threshold value, the time point can be regarded as the information distribution start timing.
From this point of time, distribution of information related to the spatial area corresponding to the cumulative divergence degree to the object starts. Thereafter, the processing proceeds to step 907.

If the maximum cumulative divergence degree M (x _n ) is not greater than the distribution threshold value, the process ends.

  In step 907, information associated with the spatial area corresponding to the cumulative divergence is delivered to the object from that point on.

  Thereafter, the process ends.

  It should be understood that the end threshold value and the distribution threshold value are set in advance, and different values are set according to the specific situation of the information distribution system.

According to another embodiment of the present invention, the divergence degree may include an internal boundary factor, an external boundary factor, an immediate divergence degree, and a cumulative divergence degree.
The virtual inner boundary and the virtual outer boundary can be used instead of the real boundary of the spatial area used in the embodiment of FIGS.
When an object moves between different spatial areas, virtual internal and virtual external boundaries as described in the embodiment of FIG. 4 can be used to determine the relationship between the object and the spatial area.
When an object enters the virtual internal boundary of a spatial area, the object is considered to be within that spatial area until the object crosses the virtual external boundary of the spatial area.

Actually, in this other embodiment, unlike the information distribution method shown in FIG. 9, the immediate divergence of each spatial area is determined based on the virtual inner boundary and / or virtual outer boundary of each spatial area. Is done.
For example, first, the virtual inner boundary and / or virtual outer boundary of each spatial area is obtained based on the boundary of each spatial area, the outer boundary factor and the inner boundary factor of each spatial area, and then An immediate divergence is determined based on the position parameters of the object and the virtual internal and / or virtual external boundaries of each spatial area.

  After that, the current cumulative divergence of each spatial area is obtained based on the immediate divergence of each spatial area, and the maximum cumulative divergence is determined by sorting the cumulative divergence. If the cumulative divergence is greater than the end threshold, distribution to the object of the same information as the information distributed immediately before is stopped from the current time, and if the maximum cumulative divergence is greater than the distribution threshold, the maximum The information associated with the spatial area corresponding to the cumulative divergence degree is distributed to the object from the present time.

The process of determining the immediate divergence of each spatial area is
If the spatial area in which the object is currently located is a spatial area related to the information distribution start timing at the previous time, the immediate divergence of all the spatial areas should be set to a negative value that is determined in advance. If the spatial area is not a spatial area related to the information distribution start timing at the immediately previous time, the immediate divergence degree of the spatial area where the object is currently located is set to a positive value, and the object is located at the current time. Including setting the immediate divergence degree of a spatial area other than the spatial area to be “0”.

The process to get the cumulative divergence of each spatial area at the moment is
Find the sum of the cumulative divergence of each spatial area at the previous time point and the immediate divergence of each spatial area at the present time, and compare the total result with a predetermined maximum value to obtain the maximum value of the two And determining the large value as the cumulative divergence of each spatial area at the present time.

The inner and outer boundary factors are related to the spatial positioning accuracy.
The higher the positioning accuracy, the closer the inner boundary factor and outer boundary factor are to “1”.

  The information distribution apparatus according to the above-described embodiment is based on receiving means for receiving a position parameter of an object in a space (where space includes one or more spatial areas) and the degree of divergence between the spatial areas. And a distribution means for distributing information associated with the spatial area to the object using the position parameter of the object and the boundary of each spatial area.

Distribution means
Internal boundary / external boundary acquisition means for acquiring the virtual internal boundary and / or virtual external boundary of each spatial area based on the boundary of each spatial area and the internal boundary factor and external boundary factor of each spatial area;
An immediate divergence determining means for determining an immediate divergence of each spatial area based on the position parameter of the object and the virtual internal boundary and / or virtual external boundary of each spatial area;
Based on the immediate divergence degree of each spatial area, a cumulative divergence degree calculating means for obtaining the cumulative divergence degree of each spatial area at the present time;
A maximum value determining means for determining the maximum cumulative divergence by sorting the cumulative divergence;
If the maximum cumulative divergence is larger than the end threshold, the distribution of the same information as the information distributed at the previous time is stopped from the current time to the object, and the maximum cumulative divergence is distributed. If greater than the threshold value, a distribution means for distributing to the object information associated with the spatial area corresponding to the maximum cumulative divergence degree from the present time is provided.

Immediate divergence determination means is
If the spatial area where the object is currently located is a spatial area associated with the immediately preceding information distribution start timing, means for setting the immediate divergence of all the spatial areas to a predetermined negative value, and the object If the spatial area is not a spatial area associated with the immediately preceding information distribution start timing, the immediate divergence of the spatial area where the object is currently positioned is set to a predetermined positive value, and the object is positioned at the current time Means for setting the immediate divergence of other spatial areas other than the spatial area to be set to “0”.

  The cumulative divergence calculation means is a means for calculating the sum of the cumulative divergence degree of each spatial area at the time immediately before and the immediate divergence degree of each spatial area at the present time, and compares the total result with a predetermined maximum value. And means for obtaining the maximum value of the two, and means for determining the large value as the cumulative divergence of each spatial area at the present time.

  The method and apparatus according to the present invention can be realized by software, hardware or a combination of software and hardware. The hardware part is realized by dedicated logic, and the software part is stored in a storage device and executed by an appropriate instruction execution system (for example, a microprocessor, a personal computer (PC), a large computer).

  The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations will be apparent to practitioners skilled in this art.

  Therefore, the selection and description of the above embodiments more clearly explain the principle and practical application of the present invention, and all modifications and changes made without departing from the spirit of the present invention will be appended. Enabling the person skilled in the art to understand that they fall within the protection scope of the invention as defined in the appended claims.

  Further, a part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
Receiving a positional parameter of an object in a space including one or more spatial areas;
Distributing information associated with the spatial area to the object by using the position parameter of the object and the boundary of each spatial area based on the degree of divergence of each spatial area. Method.

(Appendix 2)
The degree of divergence includes an internal boundary factor and an external boundary factor;
Delivering information associated with the spatial area to the object;
Obtaining a virtual inner boundary and a virtual outer boundary for each spatial area based on the boundary of each spatial area and the inner boundary factor and the outer boundary factor of each spatial area;
The method further includes the step of, when the object enters the virtual internal boundary of the spatial area, starting to distribute information associated with the spatial area to the object until the object crosses the virtual external boundary. Information distribution method described in 1.

(Appendix 3)
The inner boundary factor and the outer boundary factor are related to the positioning accuracy of space,
The information distribution method according to supplementary note 2, wherein the higher the positioning accuracy is, the closer the inner boundary factor and the outer boundary factor are to 1.

(Appendix 4)
The degree of deviation includes an immediate degree of deviation and a cumulative degree of deviation,
Delivering information associated with the spatial area to the object;
Determining the immediate divergence of each spatial area based on the position parameter of the object and the boundary of each spatial area;
Obtaining a cumulative divergence degree of each spatial area based on an immediate divergence degree of each spatial area; and
Determining the maximum cumulative divergence by sorting the cumulative divergence; and
If the maximum cumulative divergence is greater than an end threshold, stopping the delivery of the same information as the information delivered at the previous time point at the current time;
Delivering the information associated with the spatial area corresponding to the maximum cumulative divergence degree to the object from the current time when the maximum cumulative divergence degree is larger than a distribution threshold value. The information delivery method according to appendix 1.

(Appendix 5)
Determining the immediate divergence of each spatial area,
If the spatial area in which the object is currently located is a spatial area associated with the immediately preceding information delivery start timing, setting the immediate divergence of all the spatial areas to a predetermined negative value;
If the spatial area where the object is currently located is not the spatial area associated with the immediately preceding information distribution start timing, the immediate divergence degree of the spatial area where the object is currently located is set to a predetermined positive value, and the object is And the step of setting the immediate divergence degree of other spatial areas other than the spatial area located at 0 to 0.

(Appendix 6)
The step of acquiring the cumulative divergence degree of each spatial area at the present time,
Calculating the sum of the cumulative divergence of the spatial area at the previous time point and the immediate divergence of the current spatial area;
Comparing the total result with a predetermined maximum value and obtaining the maximum value of the two;
And determining the acquired maximum value as a cumulative divergence degree of each spatial area at the present time.

(Appendix 7)
The degree of divergence includes an inner boundary factor, an outer boundary factor, an immediate divergence degree, and a cumulative divergence degree,
Delivering information associated with the spatial area to the object;
Obtaining a virtual internal boundary and / or a virtual external boundary for each spatial area based on the boundary of each spatial area and the internal and external boundary factors of each spatial area;
Determining the immediate divergence of each spatial area based on the object location parameters and the virtual internal and / or virtual external boundaries of each spatial area;
Obtaining a cumulative divergence degree of each spatial area based on an immediate divergence degree of each spatial area; and
Determining the maximum cumulative divergence by sorting the cumulative divergence; and
If the maximum cumulative divergence is greater than the ending threshold, stopping the delivery of the same information to the object from the current time to the object,
Delivering the information associated with the spatial area corresponding to the maximum cumulative divergence from the current time to the object if the maximum cumulative divergence is greater than the distribution threshold. The information delivery method according to attachment 1.

(Appendix 8)
Determining the immediate divergence of each spatial area,
If the spatial area in which the object is currently located is a spatial area associated with the immediately preceding information delivery start timing, setting the immediate divergence of all the spatial areas to a predetermined negative value;
If the spatial area where the object is currently located is not the spatial area associated with the immediately preceding information distribution start timing, the immediate divergence of the spatial area where the object is currently located is set to a predetermined positive value, and the object The method for delivering information according to claim 7, further comprising the step of setting the immediate divergence of a spatial area other than the spatial area currently located at 0 to 0.

(Appendix 9)
The step of acquiring the cumulative divergence degree of each spatial area at the present time,
Calculating the sum of the cumulative divergence of each spatial area at the previous time point and the immediate divergence of each spatial area at the current time;
Comparing the total result with a predetermined maximum value and obtaining the maximum value of the two;
And determining the maximum value as a cumulative divergence degree of each spatial area at the present time.

(Appendix 10)
The information distribution method according to appendix 7, wherein the inner boundary factor and the outer boundary factor relate to spatial positioning accuracy, and the higher the positioning accuracy, the closer the inner boundary factor and the outer boundary factor to 1. .

(Appendix 11)
The object is provided with a signal transmitter for transmitting a ranging signal,
The information distribution method according to claim 1, wherein a position parameter of the object is acquired by a distance measurement signal transmitted from the signal transmitter to the positioning device.

(Appendix 12)
Receiving means for receiving a positional parameter of an object in a space including one or more spatial areas;
Distribution means for distributing information associated with the spatial area to the object by using the position parameter of the object and the boundary of each spatial area based on the degree of divergence of each spatial area Distribution device.

(Appendix 13)
The degree of divergence includes an internal boundary factor and an external boundary factor;
The delivery means is
An internal boundary / external boundary acquisition means for acquiring a virtual internal boundary and a virtual external boundary of each spatial area based on the boundary of each spatial area and the internal boundary factor and external boundary factor of each spatial area;
And a determination unit that starts distribution of information associated with the spatial area to the object until the object crosses the virtual external boundary when the object enters the virtual internal boundary of the spatial area. 12. The information distribution device according to 12.

(Appendix 14)
The inner boundary factor and the outer boundary factor are related to the positioning accuracy of space,
14. The information delivery apparatus according to appendix 13, wherein the higher the positioning accuracy, the closer the inner boundary factor and the outer boundary factor are to 1.

(Appendix 15)
The degree of deviation includes an immediate degree of deviation and a cumulative degree of deviation,
The delivery means is
Immediate divergence determination means for determining an immediate divergence degree of each spatial area based on the position parameter of the object and the boundary of each spatial area;
A cumulative divergence calculating means for obtaining a cumulative divergence degree of each spatial area based on an immediate divergence degree of each spatial area; and
Maximum value determining means for determining the maximum cumulative divergence by sorting the cumulative divergence,
When the maximum cumulative divergence degree is larger than an end threshold value, the threshold value at which the distribution of the same information as the information distributed at the previous time point to the object is stopped at the present time and the maximum cumulative divergence degree is distributed. The information distribution apparatus according to appendix 12, further comprising: a determination unit that distributes information associated with the spatial area corresponding to the maximum cumulative divergence degree to the object from the present time when the value is larger.

(Appendix 16)
The immediate divergence determination means is
If the spatial area where the object is currently located is a spatial area associated with the immediately preceding information delivery start timing, means for setting the immediate divergence of all the spatial areas to a predetermined negative value;
If the spatial area where the object is currently located is not the spatial area associated with the immediately preceding information distribution start timing, the immediate divergence degree of the spatial area where the object is currently located is set to a predetermined positive value, and the object is The information distribution apparatus according to claim 15, further comprising means for setting an immediate divergence degree of a spatial area other than the spatial area located at 0 to 0.

(Appendix 17)
The cumulative divergence calculating means further includes:
Means for calculating the sum of the cumulative divergence of the spatial area at the previous time point and the immediate divergence of the spatial area at the present time;
Means for comparing the total result with a predetermined maximum value and obtaining the maximum value of the two;
The information distribution apparatus according to claim 15, further comprising means for determining the acquired maximum value as a cumulative divergence degree of each spatial area at the present time.

(Appendix 18)
The degree of divergence includes an inner boundary factor, an outer boundary factor, an immediate divergence degree, and a cumulative divergence degree,
The distribution means further includes:
Internal boundary / external boundary acquisition means for acquiring the virtual internal boundary and / or virtual external boundary of each spatial area based on the boundary of each spatial area and the internal boundary factor and external boundary factor of each spatial area;
An immediate divergence determining means for determining an immediate divergence of each spatial area based on the position parameter of the object and the virtual internal boundary and / or virtual external boundary of each spatial area;
Based on the immediate divergence degree of each spatial area, a cumulative divergence degree calculating means for obtaining the cumulative divergence degree of each spatial area at the present time;
A maximum value determining means for determining the maximum cumulative divergence by sorting the cumulative divergence;
If the maximum cumulative divergence is larger than the end threshold, the distribution of the same information as the information distributed at the previous time is stopped from the current time to the object, and the maximum cumulative divergence is distributed. The information delivery apparatus according to appendix 12, further comprising: a delivery unit that delivers to the object information associated with the spatial area corresponding to the maximum cumulative divergence degree from the current time if greater than the threshold value. .

(Appendix 19)
The immediate divergence determination means is
If the spatial area where the object is currently located is a spatial area associated with the immediately preceding information distribution start timing, means for setting the immediate divergence of all the spatial areas to a predetermined negative value;
If the spatial area where the object is currently located is not the spatial area associated with the immediately preceding information distribution start timing, the immediate divergence of the spatial area where the object is currently located is set to a predetermined positive value, and the object The information distribution apparatus according to appendix 18, further comprising means for setting the immediate divergence of a spatial area other than the spatial area currently located to “0”.

(Appendix 20)
The cumulative divergence calculating means includes:
Means for calculating the sum of the cumulative divergence of each spatial area at the previous time point and the immediate divergence of each spatial area at the present time;
Comparing the total result with a predetermined maximum value, and means for obtaining the maximum value of the two, and means for determining the maximum value as a cumulative divergence degree of each spatial area at the present time The information distribution device according to appendix 18.

(Appendix 21)
The information distribution apparatus according to appendix 18, wherein the inner boundary factor and the outer boundary factor relate to spatial positioning accuracy, and the higher the positioning accuracy, the closer the inner boundary factor and the outer boundary factor to 1. .

(Appendix 22)
The object is provided with a signal transmitter for transmitting a ranging signal,
13. The information distribution apparatus according to appendix 12, wherein a position parameter of the object is acquired by a distance measurement signal transmitted from the signal transmitter to the positioning apparatus.

(Appendix 23)
A signal transmitter that emits a ranging signal provided in an object in a space including one or more spatial areas;
A positioning device that acquires a position parameter of an object based on a ranging signal emitted from the signal transmitter;
Receives location parameters of objects in the space, and distributes information associated with the spatial area to the object by using the positional parameters of the objects and the boundaries of the spatial areas based on the degree of divergence of each spatial area An information distribution system comprising a server.

210: Signal transmitter 220: Positioning device 230: Server 240: Information distribution device 241: Receiving means 242: Distribution means 410: Receiving means 420: Distribution means 421: Internal boundary / external boundary acquisition means 422: Determination means 601: Virtual internal Boundary 602: Boundary 603: Virtual external boundary 810: Receiving means 820: Distribution means 821: Immediate divergence degree determining means 822: Cumulative divergence degree calculating means 823: Maximum value determining means 824: Determination means

Claims (8)

An information distribution method by an information distribution apparatus,
Receiving a position parameter of an object in a space including one or more spatial areas;
A delivery means for delivering information associated with the spatial area to the object by using the position parameter of the object and the boundary of each spatial area based on the degree of divergence of each spatial area ;
Immediate divergence determination means for determining the immediate divergence degree of each spatial area based on the position parameter of the object and the boundary of each spatial area,
The cumulative divergence degree acquisition means provided in the distribution means acquires a cumulative divergence degree acquisition step of acquiring the cumulative divergence degree of each spatial area at the present time based on the immediate divergence degree of each spatial area;
A distribution control unit included in the distribution unit, the distribution control step of controlling the distribution to the object based on the cumulative degree of separation,
The degree of deviation includes an immediate degree of deviation and a cumulative degree of deviation.
Information distribution method, wherein a call. The maximum value determining means provided in the distribution means has a maximum value determining step for determining a maximum cumulative divergence degree from the cumulative divergence degree,
In the delivery control step,
Control delivery to the object based on the maximum cumulative divergence
The information distribution method according to claim 1 . In the delivery control step,
When the maximum cumulative divergence degree is larger than the end threshold, the distribution of the same information as the information distributed at the previous time point to the object is stopped at the present time.
The information delivery method according to claim 2, wherein: In the delivery control step,
When the maximum cumulative divergence degree is larger than a distribution threshold value, information associated with the spatial area corresponding to the maximum cumulative divergence degree is distributed to the object from the present time.
The information delivery method according to claim 2 or claim 3, wherein If the immediate divergence determination means is a spatial area in which the object is currently located is a spatial area associated with the immediately preceding information distribution start timing, the immediate divergence of all the spatial areas is a predetermined negative value. Step to set to
If the spatial area where the object is currently located is not a spatial area associated with the immediately preceding information distribution start timing, the immediate divergence determining means determines in advance the immediate divergence degree of the spatial area where the object is currently located. A step of setting the immediate divergence degree to zero in a spatial area other than the spatial area where the object is currently located, and
The information distribution method according to claim 1, further comprising: The cumulative divergence acquisition means obtains the sum of the cumulative divergence of the spatial area at the previous time and the immediate divergence of the spatial area at the current time;
The cumulative divergence acquiring means compares the total result with a predetermined maximum value, and acquires the maximum value of the two;
The cumulative divergence acquiring means determines the acquired maximum value as the cumulative divergence of each spatial area at the present time; and
The information delivery method according to any one of claims 1 to 5, wherein the information delivery method includes: The degree of divergence includes an inner boundary factor, an outer boundary factor, an immediate divergence degree, and a cumulative divergence degree,
The internal boundary / external boundary acquisition means included in the distribution means acquires the virtual internal boundary and / or virtual external boundary of each spatial area based on the boundary of each spatial area and the internal boundary factor and external boundary factor of each spatial area. An internal boundary / external boundary acquisition step,
In the immediate divergence determination step,
Determine the immediate divergence of each spatial area based on the object's positional parameters and the virtual internal and / or virtual external boundaries of each spatial area
The information distribution method according to any one of claims 1 to 6, wherein the information distribution method is performed . Receiving means for receiving a positional parameter of an object in a space including one or more spatial areas;
Distribution means for distributing information associated with the spatial area to the object by using the position parameter of the object and the boundary of each spatial area based on the degree of divergence of each spatial area;
The degree of deviation includes an immediate degree of deviation and a cumulative degree of deviation,
The delivery means is
Immediate divergence determination means for determining an immediate divergence degree of each spatial area based on the position parameter of the object and the boundary of each spatial area;
A cumulative divergence acquisition means for acquiring a cumulative divergence degree of each spatial area based on an immediate divergence degree of each spatial area;
Distribution control means for controlling distribution to the object based on the cumulative peeling degree.
An information distribution apparatus characterized by that .

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