JP2010055185A - Data transfer system and device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent data transfer missing with high probability even if a plurality of processors are connected by wireless lines. <P>SOLUTION: A data transfer device includes: a tabulated list division unit 2 dividing a processor tabulated list on the basis of positional relations recorded in the processor tabulated list; and a transfer target selecting unit 5 selecting processors to be transferred among processors of which the identification information is recorded in the processor tabulated list after being divided by the division unit 2. A data transfer unit 7 transfers content data received by a data reception unit 1 and the processor tabulated list after being divided by the division unit 2 to the processor selected by the selection unit 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a data transfer system and a data transfer device that transmit content data, control data, and the like to a plurality of processing devices.

In a conventional data transfer system, a plurality of processing devices perform data transfer while building a tree-type network, and transmit data to the plurality of processing devices.
That is, each processing device receives data from other processing devices, and receives a processing device list that records identification information indicating the processing device to which the data is transmitted, and divides the processing device list. Thus, the processing device to be transferred is selected from the processing devices whose identification information is recorded in the divided processing device list.
Then, each processing device transfers the data received from the other processing devices and the divided processing device list to the transfer target processing device.

However, when each processing device divides the processing device list, the direction of each processing device viewed from the highest processing device that starts data transmission first (hereinafter referred to as “total transmission source processing device”) is The processing device list is divided without consideration.
For this reason, when each processing device sequentially divides the processing device list, the directions of the processing devices in which the identification information is recorded in the divided processing device list are diverged (the divided processing devices). The list includes identification information of processing devices in various directions), and there is a possibility that a processing device that cannot communicate with any route is included.
When multiple processing devices are connected by a wired line, communication is generally possible regardless of the distance and direction between the processing devices. However, when connected by a wireless line, the distance is the communication quality (possibility of availability). ), And there is a combination of processing devices that cannot communicate even if each wireless line or processing device is normal.

  For example, only the identification information of two processing devices is recorded in the divided processing device list, and the two processing devices are the processing device existing at the northernmost end and the processing existing at the southernmost end. If the distance between the two processing devices exceeds the communicable distance, it is impossible to communicate with each other, so data transfer cannot be completed (see, for example, Patent Document 1). ).

Japanese Patent Laying-Open No. 2006-295527 (paragraph number [0009], FIG. 1)

  Since the conventional data transfer system is configured as described above, the processing device list is divided without considering the direction of each processing device viewed from the total transmission source processing device. For this reason, when each processing device sequentially divides the processing device list, the direction of the processing device whose identification information is recorded in the divided processing device list is diverged, and what route is taken. There is a problem that, even if traced, there is a possibility that a processing device that cannot communicate is included.

  The present invention has been made to solve the above-described problems, and a data transfer system and data capable of preventing data transfer omission with high probability even when a plurality of processing devices are connected by wireless lines. An object is to obtain a transfer device.

  A data transfer system according to the present invention includes a list list dividing unit that divides a processing device list by using a positional relationship recorded in the processing device list received by the data receiving unit, and a list list dividing unit. And a transfer target selection means for selecting a processing apparatus to be transferred from among the processing apparatuses whose identification information is recorded in the processing apparatus list after division by the data, and the data transfer means receives the data received by the data receiving means, The processing device list after the division by the list list dividing unit is transferred to the processing device selected by the transfer target selecting unit.

  According to the present invention, the list list dividing means for dividing the processing apparatus list list on the basis of the positional relationship recorded in the processing apparatus list list received by the data receiving means, and after the division by the list list dividing means A transfer target selection means for selecting a processing apparatus to be transferred from among the processing apparatuses whose identification information is recorded in the processing apparatus list, and the data transfer means divides the data received by the data receiving means and the list list Since the processing device list after the division by the means is transferred to the processing device selected by the transfer target selection means, even when a plurality of processing devices are connected by a wireless line, data transfer is highly probable There is an effect that can be prevented.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a data transfer apparatus according to Embodiment 1 of the present invention.
The data transfer apparatus in FIG. 1 is a processing apparatus having a data transmission / reception function, and a data transfer system is constituted by a plurality of processing apparatuses.
In the first embodiment, of the plurality of processing devices constituting the data transfer system, the highest processing device that starts data transmission first is referred to as “total transmission source processing device Sdr”.
In the first embodiment, a communication line between a plurality of processing devices is assumed to be a wireless line.
However, at least a part of the communication lines may be wireless lines, and a wired line and a wireless line may be mixed.

The data receiving unit 1 includes a wireless communication device having a function of receiving data from another processing device (higher processing device). The data receiving unit 1 includes content data or control data from another processing device, Identification information (for example, identification codes A, B, C, D,...) Indicating the transmission destination of the content data and the positional relationship of the transmission destination processing device (for example, relative to the total transmission source processing device Sdr) Processing for receiving a list of processing devices in which the direction and distance for specifying the position are recorded and a transmission path list indicating processing devices to which content data has already been transmitted and received is performed.
The data receiving unit 1 constitutes data receiving means.

The list list dividing unit 2 performs a process of dividing the processing device list based on the positional relationship (for example, direction and distance) recorded in the processing device list received by the data receiving unit 1.
The list list dividing unit 2 constitutes list list dividing means.

The communication availability confirmation unit 3 periodically checks the communication status of neighboring processing devices, and performs processing for detecting processing devices that are currently communicable.
The communication availability confirmation unit 3 constitutes a processing device detection unit.
The communicable processing device list update unit 4 holds a communicable processing device list indicating the currently communicable processing devices, and updates the communicable processing device list with reference to the detection result of the communicability confirmation unit 3. Perform the process.
The communicable processing device list update unit 4 constitutes a communicable processing device list update unit.

The transfer target selection unit 5 refers to the communicable processing device list updated by the communicable processing device list update unit 4, and the process in which the identification information is recorded in the processing device list after division by the list list division unit 2 Among the devices, a processing device that can currently communicate is specified, and processing for selecting a processing device to be transferred from the processing devices that can currently communicate is performed.
The transfer target selection unit 5 constitutes a transfer target selection unit.

The transmission path list update unit 6 appends identification information indicating its own processing device to the transmission path list received by the data reception unit 1 and outputs the post-recording transmission path list to the data transfer unit 7.
However, when the processing device is the total transmission source processing device Sdr, the transmission route list is not received from the host processing device, so the transmission route list updating unit 6 sets its own processing device (total transmission source processing device). A process for generating a transmission path list in which the identification information Sdr shown is generated and outputting the transmission path list to the data transfer unit 7 is performed.
The transmission route list update unit 6 constitutes transmission route list update means.

The data transfer unit 7 includes a wireless communication device having a function of transmitting data to other processing devices (lower processing devices). The data transfer unit 7 includes content data received by the data receiving unit 1, A process of transferring the processing device list after division by the list list division unit 2 and the transmission route list after addition by the transmission route list update unit 6 to the processing device selected by the transfer target selection unit 5 is performed.
The data transfer unit 7 constitutes a data transfer unit.

If the data received by the data receiving unit 1 is not content data but control data, the control unit 8 performs predetermined processing according to the control data and outputs the processing result to the reply unit 10. carry out.
The control unit 8 constitutes a control means.

The delivery confirmation data receiving unit 9 is composed of a wireless communication device having a function of receiving data from other processing devices (lower processing devices), and the delivery confirmation data receiving unit 9 receives content data and the like by the data transfer unit 7. The process of receiving the delivery confirmation data from the processing device to which is transferred is executed.
The reply unit 10 includes a wireless communication device having a function of transmitting data to another processing device (higher processing device). The reply unit 10 refers to the transmission path list received by the data receiving unit 1. Then, the processing device (high-order processing device) of the transmission source of the content data received by the data receiving unit 1 is specified, and the delivery indicating the reception result of the content data or the like by the data receiving unit 1 or the processing result of the control unit 8 Processing for transmitting the confirmation data and the delivery confirmation data received by the delivery confirmation data receiving unit 9 to the processing device (higher processing device) as the transmission source is performed.
The delivery confirmation data receiving unit 9 and the reply unit 10 constitute reply means.

  In the example of FIG. 1, each component (data receiving unit 1, list list dividing unit 2, communication availability checking unit 3, communicable processing device list updating unit 4, transfer target selecting unit 5, The transmission path list updating unit 6, the data transfer unit 7, the control unit 8, the delivery confirmation data receiving unit 9, and the reply unit 10) are each configured by dedicated hardware (for example, a semiconductor integrated circuit on which a CPU or the like is mounted). However, if the data transfer device, which is a processing device, is configured by a computer, a program that describes the processing contents of each component of the data transfer device is stored in the memory of the computer, The CPU of the computer may execute a program stored in the memory.

Next, the operation will be described.
FIG. 2 is an explanatory diagram showing the relative positions of the processing devices A, B, C,..., W, X, Y, and Z with respect to the total transmission source processing device Sdr.
In the example of FIG. 2, processing devices A to K and processing devices V to Z exist in addition to the total transmission source processing device Sdr.
In the first embodiment, for convenience of explanation, the processing devices A to K are processing devices that are transmission destinations of content data and the like, and the processing devices V to Z are processing devices that do not need to transmit content data and the like. To do.

First, the data receiving unit 1 is connected to another processing device (higher processing device) and a wireless line, and receives content data or control data, a processing device list, and a transmission path list from another processing device. To do.
Here, FIG. 3 is an explanatory diagram showing an example of the processing device list.
In FIG. 3, LIST _Sdr is a list of processing devices held by the total transmission source processing device Sdr, and LISTs 1 to 11 are processing device list lists received by the data receiving unit 1 of each processing device.

For example, in the case of the processing device list LIST _Sdr held by the total transmission source processing device Sdr, its own identification information Sdr is described in the upper part of the list, and the transmission destination of content data or the like is shown in the lower part of the list. Identification information AK of the processing device is described.
Further, the direction information / distance information for specifying the relative position with respect to the total transmission source processing device Sdr is added to the identification information Sdr, A to K of each processing device.
For example, “87,7” is added to the identification information A, and “87” is 87 degrees as viewed from the total transmission source processing device Sdr (here, the direction is represented by 360 degrees, and north is 0 degrees). ) Indicates that there is a processing device for identification information A, and “7” indicates that there is a processing device for identification information A at a distance of “7” from the total transmission source processing device Sdr. Represents.
Note that the direction information and the distance information added to the identification information Sdr of the total transmission source processing device are both “0” because of the relative position with respect to the total transmission source processing device Sdr.

When the data receiving unit 1 receives the processing device list, the list list dividing unit 2 uses the positional relationship (for example, direction and distance) recorded in the processing device list to obtain the processing device list. To divide.
The division number N of the processing device list is basically assumed to be two divisions (N = 2), but may be N ≧ 3 or may be three divisions, four divisions, or the like.
In the first embodiment, an example in which the processing apparatus list is divided into two parts will be described for the sake of simplicity.

For example, when the list list dividing unit 2 of the total transmission source processing device Sdr divides the processing device list LIST _Sdr into two, the direction 2 is the most distant among the processing devices A to K that are transmission destinations of content data and the like. Search for one processing unit.
In the example of FIG. 3, the processing unit for the identification information B having the smallest direction information (direction “50”) and the processing unit for the identification information J having the largest direction information (direction “130”) are searched.
Then, the list list dividing unit 2 of the total transmission source processing device Sdr includes the processing device list list LIST1 including the identification information B having the smallest direction information and the processing device list list LIST6 including the identification information J having the largest direction information. Generate.

Next, the list list dividing unit 2 of the direction total transmission source processing device Sdr includes the identification information E having the second smallest direction information (identification information of the processing device having the direction “51”) in the processing device list LIST1, and the direction. The identification information D having the second largest information (identification information of the processing device having the direction “120”) is included in the processing device list LIST6.
Next, the list list dividing unit 2 includes the identification information F having the third smallest direction information (the identification information of the processing device having the direction “70”) in the processing device list LIST1, and the identification information having the third largest direction information. K (identification information of the processing device of direction “105”) is included in the processing device list LIST6.

Hereinafter, similarly, the identification information of the processing device having the smaller direction information is included in the processing device list list LIST1, and the identification information of the processing device having the larger direction information is included in the processing device list list LIST6.
As a result, the processing device list LIST1 includes identification information A, B, E, F, and G, and the processing device list LIST6 includes identification information C, D, H, I, J, and K. .
In this example, the direction from the total transmission source processing device Sdr is classified into a processing device having a direction of 90 degrees or more and a processing device having a direction of less than 90 degrees.
However, at this stage, since a processing device to be transferred such as content data is not selected, the upper and lower stages are not distinguished in the processing device list LIST1, LIST6.

  For example, when the list list division unit 2 of the processing device of the identification information C divides the processing device list list LIST6 into two, the processing device list list LIST6 is converted by the same algorithm as the list list division unit 2 of the total transmission source processing device Sdr. When the list list dividing unit 2 of the processing apparatus of the identification information A divides the processing apparatus list list LIST1 into two, the processing apparatus that can currently communicate is divided into two. Since it is only the processing device of identification information B (referring to the communicable processing device list of FIG. 5 described later), it can be recognized that the processing device that can currently communicate is only the processing device of identification information B. ), The processing device list that is obtained by removing the identification information from the processing device list LIST1 without dividing the processing device list LIST1. The processing device list) corresponding to the processing device list LIST2 outputs to the transfer target selecting unit 5.

The list list dividing unit 2 of each processing device divides the processing device list as described above. As shown in FIG. 3, the processing device list divided by the lower processing devices becomes smaller.
In the processing device list in the terminal processing device, the lower list becomes empty, and there is no processing device to which content data or the like is transferred.

The communication availability checking unit 3 periodically checks the communication status of neighboring processing devices and detects processing devices that are currently communicable.
For example, if it is possible to connect a wireless line by trying to connect a wireless line to a nearby processing apparatus and exchange a predetermined control signal with the processing apparatus, Recognized as a communicable processing device.

The communicable processing device list update unit 4 holds a communicable processing device list indicating currently communicable processing devices, and updates the communicable processing device list with reference to the detection result of the communication feasibility confirmation unit 3. To do.
Needless to say, if a currently communicable processing device recorded in the communicable processing device list becomes incapable of communication, the processing device is deleted from the communicable processing device list and is added to the communicable processing device list. When a processing device that is not recorded and is currently incapable of communication becomes communicable, the processing device is added to the communicable processing device list.

FIG. 4 is an explanatory diagram showing an example of the communicable processing device list held by the communicable processing device list update unit 4 of the total transmission source processing device Sdr.
In the example of FIG. 4, the processing devices that can currently communicate with the total transmission source processing device Sdr are the processing devices of the identification information A, B, C, D, W, X, Y, and Z.
In the communicable processing device list, the numbers added to the identification information are the direction, distance, and radio wave intensity, respectively.
For example, the processing apparatus for identification information A indicates that the radio wave intensity is “3”, and the processing apparatus for identification information B indicates that the radio wave intensity is “2”.

FIG. 5 is an explanatory diagram showing an example of the communicable processing device list held by the communicable processing device list update unit 4 of the processing device of the identification information A.
In the example of FIG. 5, the processing devices that can currently communicate with the processing device of the identification information A are processing devices of the identification information Sdr, B, C, D, and W.
However, among the processing devices whose identification information is included in the processing device list LIST1 transmitted from the total transmission source processing device Sdr, only the processing device with the identification information B is currently communicable.

  When the transfer target selection unit 5 receives the divided processing device list from the list list division unit 2, the transfer target selection unit 5 refers to the communicable processing device list updated by the communicable processing device list update unit 4, and performs processing after division. Among the processing devices whose identification information is recorded in the device list, a processing device that can currently communicate is specified, and a processing device to be transferred is selected from the processing devices that can currently communicate.

For example, when the transfer target selection unit 5 of the total transmission source processing device Sdr selects a processing device to be transferred, the processing device list list LIST1 and the processing device list are used as the processing device list after the division from the list list dividing unit 2. A processing device list corresponding to LIST6 (a processing device list that does not distinguish the upper and lower stages) is acquired.
When the transfer target selection unit 5 obtains the processing device list corresponding to the processing device list LIST1, the transfer target selection unit 5 refers to the communicable processing device list in FIG. 4 and adds the processing device list to the processing device list corresponding to the processing device list LIST1. Among the processing devices in which the identification information is recorded, a processing device that can currently communicate is identified.
In the example of FIG. 4, the processing devices of the identification information A and B are specified as processing devices that can currently communicate.

When the transfer target selection unit 5 identifies a processing device that can currently communicate, the transfer target selection unit 5 transfers the processing device of identification information A having the highest radio wave intensity among the processing devices of identification information A and B that are currently communicable processing devices. Select the target processing device.
When selecting the processing device of the identification information A as the processing device to be transferred, the transfer target selection unit 5 describes the information about the processing device of the identification information A in the upper part of the list as shown in FIG. In the lower part, information relating to the processing devices of the identification information B, E, F, G is described, thereby completing the processing device list LIST1.

When the transfer target selection unit 5 acquires the processing device list corresponding to the processing device list LIST6, the transfer target selection unit 5 refers to the communicable processing device list in FIG. 4 and processes the processing device list corresponding to the processing device list LIST6. Among the processing devices whose identification information is recorded in the list, a processing device that can currently communicate is specified.
In the example of FIG. 4, it is specified that the processing devices of the identification information C and D are processing devices that can currently communicate.

When the transfer target selection unit 5 identifies a processing device that can currently communicate, the transfer target selection unit 5 transfers the processing device of the identification information C having the highest radio wave intensity among the processing devices of the identification information C and D that are currently communicable processing devices. Select the target processing device.
When selecting the processing device of the identification information C as the processing device to be transferred, the transfer target selection unit 5 describes information about the processing device of the identification information C in the upper part of the list as shown in FIG. In the lower part, information related to the processing devices of the identification information D, H, I, J, and K is described, thereby completing the processing device list LIST6.

For example, when the transfer target selection unit 5 of the processing device of the identification information A selects a processing device to be transferred, a processing device list corresponding to the processing device list LIST2 is acquired from the list list division unit 2 (as described above). In addition, since the list list dividing unit 2 of the processing apparatus of the identification information A does not divide the processing apparatus list list LIST1, only the processing apparatus list list corresponding to the processing apparatus list list LIST2 is acquired.
When the transfer target selection unit 5 acquires the processing device list corresponding to the processing device list LIST2, the transfer target selection unit 5 refers to the communicable processing device list shown in FIG. 5 and changes the processing device list to the processing device list corresponding to the processing device list LIST2. Among the processing devices in which the identification information is recorded, a processing device that can currently communicate is identified.
In the example of FIG. 5, only the processing device of the identification information B is specified as a processing device that can currently communicate.
When the transfer target selection unit 5 specifies that only the processing device of the identification information B is a processing device that can currently communicate, the transfer target selection unit 5 selects the processing device of the identification information B as the transfer target processing device.

When the data reception unit 1 receives the transmission route list, the transmission route list update unit 6 appends identification information indicating its processing device to the transmission route list, and outputs the post-addition transmission route list to the data transfer unit 7. To do.
For example, in the case of the transmission path list update unit 6 of the processing apparatus for the identification information F, the content data or the like is included in the transmission path list received by the data reception unit 1 as “total transmission source processing apparatus Sdr → processing apparatus for identification information A”. → "Processing device of identification information B" indicates that the information is transmitted via the path "identification information B", and by adding identification information indicating its own processing device to the transmission path list, as shown below, the identification information F Specify that the processing device is included in the path.
Transmission path = total transmission source processing device Sdr → processing device of identification information A → processing device of identification information B → processing device of identification information F

  However, since the transmission route list update unit 6 of the total transmission source processing device Sdr does not receive the transmission route list from the host processing device, the identification information Sdr indicating its own processing device (total transmission source processing device) is used. A recorded transmission path list is generated, and the transmission path list is output to the data transfer unit 7.

When the transfer target selection unit 5 selects a processing device to be transferred, the data transfer unit 7 receives the content data received by the data receiving unit 1, the list of processing devices divided by the list list dividing unit 2, and the transmission path. The transmission route list after the additional recording by the list update unit 6 is transferred to the processing device selected by the transfer target selection unit 5.
For example, in the case of the data transfer unit 7 of the total transmission source processing device Sdr, the transfer target selection unit 5 selects the processing device of the identification information A and the processing device of the identification information C as the processing device to be transferred. The content data received by the unit 1, the processing device list LIST1 after the division by the list list division unit 2, and the transmission route list after the addition by the transmission route list update unit 6 are transferred to the processing device of the identification information A. .
Further, the content data received by the data receiving unit 1, the processing device list LIST 6 after the division by the list list dividing unit 2, and the transmission path list after the additional recording by the transmission path list updating unit 6 are processed by the identification information C Transfer to device.

For example, in the case of the data transfer unit 7 of the processing device of the identification information C, the transfer target selection unit 5 selects the processing device of the identification information H and the processing device of the identification information D as the processing device to be transferred. The content data received by the unit 1, the processing device list LIST 7 after the division by the list list division unit 2, and the transmission path list after the addition by the transmission route list update unit 6 are transferred to the processing unit of the identification information H. .
The processing of the identification information D includes the content data received by the data receiving unit 1, the processing device list LIST 10 after the division by the list list dividing unit 2, and the transmission path list after the addition by the transmission path list updating unit 6. Transfer to device.

  For example, in the case of the data transfer unit 7 of the processing device of the identification information A, the transfer target selection unit 5 selects the processing device of the identification information B as the processing device to be transferred, so that the content data received by the data receiving unit 1 Then, the processing device list LIST2 generated by the list list dividing unit 2 and the transmission route list after the addition by the transmission route list updating unit 6 are transferred to the processing device of the identification information B.

If the data received by the data receiving unit 1 is not content data but control data, the control unit 8 performs a predetermined process according to the control data and outputs the processing result to the reply unit 10.
The reply unit 10 refers to the transmission path list received by the data receiving unit 1, identifies the processing device (higher processing device) that is the transmission source of the content data received by the data receiving unit 1, and receives the data The transmission confirmation data indicating the reception result of the content data or the like by the unit 1 or the processing result of the control unit 8 is transmitted to the transmission source processing device (higher processing device).
For example, in the case of the reply unit 10 of the processing device of the identification information B, the processing device of the transmission source such as the content data received by the data receiving unit 1 is identified as the processing device of the identification information A, and the delivery confirmation data is transmitted. It transmits to the processing apparatus of the identification information A which is the original processing apparatus.

The delivery confirmation data receiving unit 9 receives delivery confirmation data from the processing device to which the content data or the like has been transferred by the data transfer unit 7.
For example, in the case of the delivery confirmation data receiving unit 9 of the processing device of the identification information A, the delivery confirmation data is received from the processing device of the identification information B, and in the case of the delivery confirmation data receiving unit 9 of the processing device of the identification information C, the identification information The delivery confirmation data is received from the processing device of H and the processing device of identification information D.

  When the delivery confirmation data receiving unit 9 receives the delivery confirmation data, the reply unit 10 refers to the transmission path list received by the data receiving unit 1 and transmits the source data such as the content data received by the data receiving unit 1 The processing device (upper processing device) is specified, and the delivery confirmation data is transmitted to the transmission processing device (upper processing device).

  As is apparent from the above, according to the first embodiment, the list list that divides the processing device list on the basis of the positional relationship recorded in the processing device list received by the data receiver 1. A division unit 2 and a transfer target selection unit 5 for selecting a transfer target processing device from among the processing devices whose identification information is recorded in the processing device list after the division by the list list division unit 2 are provided. Since the unit 7 is configured to transfer the content data received by the data receiving unit 1 and the processing device list after the division by the list list dividing unit 2 to the processing device selected by the transfer target selecting unit 5, Even when the processing devices are connected via a wireless line, there is an effect that it is possible to prevent leakage of content data and the like with high probability.

In other words, the list processing unit 2 divides the processing device list according to the direction on the basis of the positional relationship recorded in the processing device list received by the data receiving unit 1, so that the same processing device list can be obtained. Since the direction of the processing device whose identification information is included in the list is narrowed without divergence, there is an effect that leakage of content data or the like can be prevented with high probability even in a wireless environment.
Further, when transferring content data, it is only necessary to be aware of the processing devices whose identification information is recorded in the processing device list, and erroneously transfer them to processing devices whose identification information is not recorded in the processing device list. In addition, access from a processing device whose identification information is not recorded in the processing device list can be denied. As a result, it is possible to increase the security effect.

  Further, according to the first embodiment, the transmission path list update unit 6 for adding the identification information indicating its own processing apparatus to the transmission path list indicating the processing apparatus to which content data has already been transmitted and received is provided, and the data transfer section 7 is a processing device in which the transmission path list after the addition by the transmission path list update unit 6 is selected by the transfer target selection unit 5 when the content data received by the data receiving unit 1 and the divided processing device list are transferred. Therefore, each processing apparatus constituting the data transfer system can easily grasp the transmission path of the content data and the like.

  In addition, according to the first embodiment, the communication availability confirmation unit 3 that periodically checks the communication status of the adjacent processing device and detects the currently communicable processing device, and the detection result of the communication availability confirmation unit 3 And a communicable processing device list update unit 4 for updating the communicable processing device list, and when the transfer target selection unit 5 selects a processing device to be transferred, refer to the communicable processing device list. Then, among the processing devices whose identification information is recorded in the divided processing device list, a processing device that can currently communicate is specified, and a processing device to be transferred is selected from the processing devices that can currently communicate. Since it comprised in this way, there exists an effect which can select the processing apparatus which can communicate now as a processing apparatus of transfer object quickly and reliably.

Embodiment 2. FIG.
In the first embodiment, the list list dividing unit 2 divides the processing device list received by the data receiving unit 1 according to the direction, but only the direction of each processing device with respect to the total transmission source processing device Sdr. Instead, the processing device list may be divided according to the positional relationship based on the direction and distance of each processing device with respect to the total transmission source processing device Sdr.

For example, as in the first embodiment, the identification information of each processing device is sorted into any processing device list based on the direction of each processing device relative to the total transmission source processing device Sdr.
At that time, when the direction of the processing apparatus with the smallest direction information is, for example, 50 degrees, and the direction of the processing apparatus with the largest direction information is, for example, 130 degrees, the direction of a certain processing apparatus is, for example, 88 degrees, Since the direction of the processing device with the smallest direction information is slightly smaller than the direction of the processing device with the smallest direction information, the processing with a direction of, for example, 88 degrees is performed based on only the direction of each processing device with respect to the total transmission source processing device Sdr. The devices (hereinafter referred to as “sorting target processing devices”) are sorted into a processing device list including the identification information of the processing device having the smallest direction information.
However, when the separation target processing device and the processing device with the smallest direction information are extremely long, there is a possibility that identification information of processing devices that cannot communicate is included in the same processing device list.

Therefore, the direction difference between the direction of the classification target processing apparatus and the direction of the processing apparatus with the smallest direction information (hereinafter referred to as “direction difference A”), and the direction of the classification target processing apparatus and the processing apparatus with the largest direction information. When the direction difference from the direction (hereinafter referred to as “direction difference B”) is obtained and the difference between the direction difference A and the direction difference B is smaller than a predetermined threshold θ (for example, 5 degrees) as shown below, Based on the distance of each processing device to the total transmission source processing device Sdr, the identification information of the sorting target processing device is sorted into one of the processing device list.
| Directional difference A−Directional difference B | <Threshold θ

That is, when the difference between the direction difference A and the direction difference B is smaller than the predetermined threshold θ, the relative distance and relative direction between the total transmission source processing device Sdr and the classification target processing device, and the total direction information about the total transmission source processing device Sdr are the most. From the relative distance and relative direction of the small processing device, the distance D1 between the separation target processing device and the processing device having the smallest direction information is geometrically calculated.
Further, from the relative distance and relative direction between the total transmission source processing device Sdr and the separation target processing device and the relative distance and relative direction between the total transmission source processing device Sdr and the processing device having the largest direction information, The distance D2 of the processing apparatus having a large direction information is calculated geometrically.
If distance D1 <distance D2, the identification information of the separation target processing device is sorted into a processing device list that includes the identification information of the processing device with the smallest direction information.
On the other hand, if distance D1 ≧ distance D2, the identification information of the classification target processing apparatus is classified into a processing apparatus list including the identification information of the processing apparatus having the largest direction information.

  As is apparent from the above, according to the second embodiment, not only the direction of each processing device with respect to the total transmission source processing device Sdr but also the direction and distance of each processing device with respect to the total transmission source processing device Sdr as a reference. Since the processing device list is divided according to the positional relationship, it is possible to prevent the omission of transfer of content data or the like with higher probability than in the first embodiment.

Embodiment 3 FIG.
In the second embodiment, the positional relationship recorded in the processing device list is the positional information indicating the relative position (direction, distance) of each processing device with respect to the total transmission source processing device Sdr. Position information indicating the absolute position of the total transmission source processing device Sdr and each processing device may be used, and the same effect as in the second embodiment can be obtained.

For example, longitude and latitude may be used as the position information indicating the absolute positions of the total transmission source processing device Sdr and each processing device.
When longitude and latitude are used as position information indicating the absolute positions of the total transmission source processing device Sdr and each processing device, each processing device may be mounted with a positioning device such as GPS to measure the longitude and latitude. However, if longitude and latitude are recorded in the processing device list in advance, it is not necessary to mount a positioning device such as GPS.

Embodiment 4 FIG.
In the first embodiment, the list list dividing unit 2 divides the processing device list received by the data receiving unit 1 into N (N = 2). However, the list list dividing unit 2 uses the processing device list. The number of divisions may be N + 1, and the processing device list may be divided into N + 1.
Then, when the list list dividing unit 2 divides the processing device list into N + 1 pieces, the N processing device list lists are transferred to the transfer target selection unit 5 and the data transfer unit 7 as in the first embodiment. Output.
As a result, the N processing device list is processed in the same manner as in the first embodiment.

The list list dividing unit 2 further divides the remaining one processing apparatus list into N + 1.
Then, when the list list dividing unit 2 divides the processing device list into N + 1 pieces, the N processing device list lists are transferred to the transfer target selection unit 5 and the data transfer unit 7 as in the first embodiment. Output.
As a result, the N processing device list is processed in the same manner as in the first embodiment.
Thereafter, the above division processing is repeatedly performed until the remaining one processing device list cannot be divided.

Embodiment 5 FIG.
In the first embodiment, the reply unit 10 refers to the transmission path list received by the data receiver 1, and the processing device (higher processing device) that is the transmission source of the content data received by the data receiver 1 Is specified, and the delivery confirmation data is transmitted to the transmission source processing device (higher processing device). However, it is impossible to communicate with the transmission source processing device (higher processing device). There may be.

In this fifth embodiment, in such a case, the reply unit 10 refers to the positional relationship recorded in the processing device list, and selects a processing device closer to the total transmission source processing device Sdr than its own processing device. Search for.
A processing device closer to the total transmission source processing device Sdr than the processing device of its own is a processing device that is likely to be able to communicate with the total transmission source processing device Sdr.

When the reply unit 10 searches for a processing device closer to the total transmission source processing device Sdr than its own processing device, the reply unit 10 transmits the delivery confirmation data to the processing device, thereby transmitting the delivery confirmation data to the total transmission source processing device Sdr. Send to.
That is, the reply unit 10 requests the processing device closer to the total transmission source processing device Sdr than its own processing device to transmit the delivery confirmation data, so that the transmission confirmation data is sent to the total transmission source processing device Sdr. Send to.
Thereby, even in a situation where it is impossible to communicate with the transmission source processing device (high-order processing device), the processing device closer to the total transmission source processing device Sdr than its own processing device, The delivery confirmation data may be able to be transmitted toward the total transmission source processing device Sdr.
For example, when the reply unit 10 needs to transmit emergency data or the like instead of the delivery confirmation data, the emergency data or the like is requested to a nearby processing device to transmit the emergency data or the like to the total transmission source process. You may make it transmit toward apparatus Sdr.

Embodiment 6 FIG.
In the first to fifth embodiments, the network is not particularly mentioned, but the present invention can be applied to a network including a wireless line.
Regardless of the protocol supported by the so-called IP network (v4, v6), the data transfer of the present application can be performed in an environment including a wireless line regardless of the form such as a telephone line or a private dedicated line. The system can be applied.
The data transfer system of the present application can also be applied in combination with a conventional data transfer system that can be applied to a wired environment.
Note that broadcasts and satellite lines are also included in the communication lines.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the data transfer apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the relative position of each processing apparatus A, B, C, ..., W, X, Y, Z with respect to the total transmission source processing apparatus Sdr. It is explanatory drawing which shows an example of a processing apparatus list. It is explanatory drawing which shows an example of the communicable processing apparatus list hold | maintained by the communicable processing apparatus list update part 4 of total transmission source processing apparatus Sdr. It is explanatory drawing which shows an example of the communicable processing apparatus list hold | maintained by the communicable processing apparatus list update part 4 of the processing apparatus of the identification information A. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Data reception part (data reception means), 2 List list division | segmentation part (list list division | segmentation means), 3 Communication availability confirmation part (processing apparatus detection means), 4 Communicable processing apparatus list update part (Communication possible process apparatus list update means) 5) Transfer target selection unit (transfer target selection unit), 6 Transmission route list update unit (transmission route list update unit), 7 Data transfer unit (data transfer unit), 8 Control unit (control unit), 9 Delivery confirmation data Receiving part (reply means), 10 reply part (reply means).

Claims (12)

  It is composed of a plurality of processing devices having a data transmission / reception function, and when the processing device receives data from another processing device, the processing device to which the data is to be transferred is selected and the data is to be transferred. In the data transfer system for transferring to an apparatus, each processing apparatus receives data from another processing apparatus, and records identification information indicating the processing apparatus that is the transmission destination of the data and the positional relationship of the processing apparatus that is the transmission destination. Receiving means for receiving a list of processing devices, and list list dividing means for dividing the processing device list based on the positional relationship recorded in the processing device list received by the data receiving means And the processing device to be transferred from among the processing devices whose identification information is recorded in the processing device list after division by the list list dividing means. Transfer target selecting means for selecting the data, and data transfer means for transferring the data received by the data receiving means and the processing apparatus list after division by the list list dividing means to the processing apparatus selected by the transfer target selecting means And a data transfer system.   2. The data transfer system according to claim 1, further comprising control means for performing predetermined processing in accordance with the control data if the data received by the data receiving means is not content data but control data.   When a transmission path list indicating a processing apparatus to which data has already been transmitted / received has been received by the data receiving means, a transmission path list updating means for adding identification information indicating its own processing apparatus to the transmission path list is provided, and data transfer When the means transfers the data received by the data receiving means and the divided processing apparatus list, the transmission path list after the addition by the transmission path list updating means is transferred to the processing apparatus selected by the transfer target selecting means. 3. The data transfer system according to claim 1, wherein the data transfer system is a data transfer system.   When data is received by the data receiving means, the transmission path list is referred to identify the processing device that is the transmission source of the data, and transmission confirmation data indicating the reception result of the data is transmitted to the processing device that is the transmission source. 4. The data transfer system according to claim 3, further comprising reply means.   When data is received by the data receiving means, the processing path that is the transmission source of the data is identified with reference to the transmission path list, and delivery confirmation data indicating the processing result of the control means is transmitted to the processing apparatus that is the transmission source. 4. The data transfer system according to claim 3, further comprising reply means.   When the reply means receives the delivery confirmation data from the processing device to which the data has been transferred by the data transfer means, the reply means refers to the transmission path list, identifies the processing device that is the transmission source of the data received by the data receiving means, and 6. The data transfer system according to claim 4, wherein the delivery confirmation data is transmitted to a processing apparatus as a transmission source.   The list list dividing unit divides the processing device list by setting the number of divisions of the processing device list to N + 1 (N is an integer of 1 or more), and outputs the N divided processing device list to the data transfer unit. The data transfer system according to any one of claims 1 to 6, wherein the remaining one divided processing apparatus list is further divided.   The positional relationship recorded in the processing device list received by the data receiving means indicates the relative position between the highest processing device that starts data transmission first and a processing device other than the highest processing device. The data transfer system according to any one of claims 1 to 7, wherein the data transfer system is position information.   The positional relationship recorded in the processing device list received by the data receiving means indicates the absolute position of the highest processing device from which data transmission is first started, and the processing devices other than the highest processing device. 8. The data transfer system according to claim 1, wherein the data transfer system is position information indicating an absolute position.   A processing device detection unit that detects a processing device that is currently communicable, and a communicable processing device list that updates a communicable processing device list indicating a processing device that is currently communicable with reference to a detection result of the processing device detection unit. Of the processing devices in which the identification information is recorded in the divided processing device list with reference to the communicable processing device list when the transfer target selecting device selects the processing device to be transferred. 10. The data according to claim 1, wherein a processing device that can currently communicate is specified, and a processing device to be transferred is selected from processing devices that can currently communicate. Transfer system.   The reply means refers to the positional relationship recorded in the processing device list when the communication with the processing device that is the transmission source of the data described in the transmission path list is impossible. By searching for a processing device closer to the highest processing device than the processing device of the above, and sending the delivery confirmation data to the processing device closer to the highest processing device, the delivery confirmation data is directed to the highest processing device. 10. The data transfer system according to claim 8, wherein the data transfer system transmits the data.   Data receiving means for receiving data from other processing devices and receiving a list of processing devices in which identification information indicating the processing device that is the transmission destination of the data and the positional relationship of the processing devices of the transmission destination are recorded; List list dividing means for dividing the processing device list based on the positional relationship recorded in the processing device list received by the data receiving means, and the processing device list after the division by the list list dividing means Transfer target selection means for selecting a transfer target processing apparatus from among the processing apparatuses whose identification information is recorded in the list, the data received by the data receiving means, and the processing apparatus list after the division by the list list dividing means A data transfer device comprising data transfer means for transferring the list to the processing device selected by the transfer target selection means.

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