JP6486984B2 - Information processing apparatus, communication terminal, information processing method, and program - Google Patents

Description

  The present invention relates to an information processing apparatus, a communication terminal, an information processing method, and a program.

A technique for identifying the position of a mobile phone by GPS (Global Positioning System) positioning has been known (see, for example, Patent Document 1).
[Prior art documents]
[Patent Literature]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2008-175824

  It is desirable to be able to reduce the possibility of specifying a position different from the actual position of the mobile phone.

  According to the first aspect of the present invention, an information processing apparatus is provided. The information processing apparatus obtains positioning result information including timing information indicating the timing at which the communication terminal has executed the GPS positioning process, position information indicating the position of the positioning result, and reception intensity information regarding the reception intensity of the GPS radio wave. An acquisition unit may be provided. The information processing apparatus has information classification in which positioning result information whose reception intensity information is higher than a predetermined threshold is correct information, and positioning result information whose reception intensity information is lower than the threshold is provisional error information among a plurality of positioning result information. May be provided. The information processing apparatus includes a correct / incorrect determination unit that sets the temporary error information as correct information or incorrect information based on a comparison result of comparing the timing information and position information of the temporary error information with the timing information and position information of the correct information. It's okay.

  The correct / incorrect determination unit determines whether the temporary error information is correct information or incorrect information based on a comparison result of comparing the position information of the temporary error information that is continuous with the correct information in time and the position information of the correct information. As good as When the distance between the position indicated by the position information of the temporary error information that is continuous to the correct information and the position indicated by the position information of the correct information is shorter than a predetermined threshold, Temporary error information may be correct information. When the distance between the position indicated by the temporary error information that is continuous with the correct information and the position indicated by the positional information of the correct information is longer than the threshold, the correct / incorrect determination unit May be misinformation. When the distance between the position indicated by the position information of the temporary error information that is continuous with the correct information and the position indicated by the position information of the correct information is longer than the threshold, the correct / incorrect determination unit The distance between the position indicated by the position information and the position indicated by the position information of the temporary error information that is temporally continuous after the temporary error information is sequentially compared, and the temporary error information whose distance is shorter than a predetermined threshold is corrected. It may be information.

  The correct / incorrect determination unit determines the distance between the position indicated by the position information of the temporary error information and the position indicated by the position information of the correct information, and the position information and timing information of the correct information. And the threshold value determined based on the position information and timing information of the temporary error information, the temporary error information may be correct information or incorrect information. The correct / incorrect determination unit may determine the threshold based on timing information and position information of the plurality of positioning result information in which the reception intensity information is higher than a predetermined threshold. The correct / incorrect determination unit includes timing information and position information of the first provisional error information as correct information, and timing of second provisional error information that is temporally continuous with the first provisional error information as correct information. The threshold value determined based on the information and the position information, the position indicated by the position information of the second temporary error information, and the position information of the third temporary error information that is temporally continuous to the second temporary error information indicate Based on the distance from the position, the third provisional error information may be correct information or error information.

  The information processing device is configured to specify, from among the plurality of positioning result information, two pieces of correct information that sandwich the plurality of provisional error information in time from the positioning result information in which the reception intensity information is higher than a predetermined threshold value. An identification unit may be further provided, and the correctness determination unit sequentially determines whether the plurality of provisional error information is correct information along a temporal direction from one of the two correct informations to the other. Based on the first comparison result and the second comparison result that sequentially determines whether the plurality of provisional error information is correct information along the temporal direction from the other to the one of the two correct information. Thus, each of the plurality of provisional error information may be correct information or error information. The correct / incorrect determination unit sets, as incorrect information, temporary error information that is not determined to be correct information in both the first comparison result and the second comparison result among the plurality of temporary error information. It may be information. The correct / incorrect determination unit sets, as misinformation, provisional error information that is not determined to be correct information in at least one of the first comparison result and the second comparison result among the plurality of provisional error information. It may be positive information.

  The positioning result information may include the number of a plurality of GPS satellites captured by the communication terminal and the reception intensity of each GPS radio wave of the plurality of GPS satellites, and the information classification unit includes the plurality of GPS satellites. And positioning result information in which the derived value derived from the GPS radio wave reception intensity of each of the plurality of GPS satellites is higher than a predetermined threshold value as positive information, and the positioning result information in which the derived value is lower than the threshold value May be used as provisional error information. The positioning result information includes the acceleration of the communication terminal acquired by the acceleration sensor of the communication terminal when the communication terminal receives the GPS radio wave, and the atmospheric pressure acquired by the pressure sensor of the communication terminal. The information classification unit may correct the positioning result information in which the received intensity information is higher than a predetermined threshold among the plurality of positioning result information in which the acceleration and the atmospheric pressure do not satisfy a predetermined condition. It is good also as information, and the positioning result information whose said receiving intensity information is lower than the said threshold value is good also as provisional error information.

  According to the second aspect of the present invention, a program for causing a computer to function as the information processing apparatus is provided.

  According to the third aspect of the present invention, an information processing method is provided. The information processing method is a positioning method for acquiring positioning result information including timing information indicating a timing at which a communication terminal executes GPS positioning processing, position information indicating a position of a positioning result, and reception intensity information related to a GPS signal reception intensity. A result information acquisition step may be provided. The information processing method includes information classification in which positioning result information whose reception intensity information is higher than a predetermined threshold among the plurality of positioning result information is correct information and positioning result information whose reception intensity information is lower than the threshold is provisional error information. Steps may be provided. The information processing method includes a correct / incorrect determination step that sets the temporary error information as correct information or incorrect information based on a comparison result of comparing the timing information and position information of the temporary error information with the timing information and position information of the correct information. It's okay.

  According to a fourth aspect of the present invention, a communication terminal is provided. The communication terminal acquires information for acquiring positioning result information including timing information indicating the timing at which the communication terminal has performed the GPS positioning process, position information indicating the position of the positioning result, and reception intensity information regarding the reception intensity of the GPS radio wave. May be provided. The communication terminal includes, among the plurality of pieces of positioning result information, an information classification unit that uses positioning result information whose received intensity information is higher than a predetermined threshold as correct information and uses positioning result information whose received intensity information is lower than the threshold as provisional error information. May be provided. The communication terminal includes a correct / incorrect determination unit that sets the temporary error information as correct information or incorrect information based on a comparison result of comparing the timing information and position information of the temporary error information with the timing information and position information of the correct information. Good.

  According to the fifth aspect of the present invention, there is provided a program for causing a computer to function as the communication terminal.

  It should be noted that the above summary of the invention does not enumerate all the necessary features of the present invention. In addition, a sub-combination of these feature groups can also be an invention.

An example of information processor 100 is shown roughly. 6 is an explanatory diagram illustrating an example of processing by the information processing apparatus 100. FIG. 6 is an explanatory diagram illustrating an example of processing by the information processing apparatus 100. FIG. 6 is an explanatory diagram illustrating an example of processing by the information processing apparatus 100. FIG. 6 is an explanatory diagram illustrating an example of processing by the information processing apparatus 100. FIG. An example of functional composition of information processor 100 is shown roughly. It is explanatory drawing explaining the receiving intensity | strength of the GPS electromagnetic wave by the mobile telephone 300. FIG. An example of a functional composition of cellular phone 300 is shown roughly. 1 schematically shows an exemplary hardware configuration of a computer 1000 that functions as an information processing apparatus 100. 1 schematically shows an example of a hardware configuration of a computer 1100 functioning as a mobile phone 300.

  Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 schematically shows an example of an information processing apparatus 100. In the information processing apparatus 100 according to the present embodiment, the positioning result information indicating the result of the mobile phone 300 executing the GPS positioning process is positive information indicating the position corresponding to the actual position of the mobile phone 300, or the mobile phone It is determined whether the information is incorrect information that does not indicate a position corresponding to the actual position of 300. The information processing apparatus 100 may be an arbitrary apparatus such as a server apparatus, a PC (Personal Computer), a tablet terminal, and a smartphone. The mobile phone 300 may be an example of a communication terminal.

  The position corresponding to the actual position of the mobile phone 300 is conceptually a position within a range that is not determined as a so-called false detection. For example, the position corresponding to the actual position of the mobile phone 300 is a position within a predetermined range from the actual position of the mobile phone 300.

  When mobile phone 300 is located outdoors, the reception strength of radio waves emitted from GPS satellites (which may be referred to as GPS radio waves) is high, so that the GPS positioning processing result indicates a position corresponding to the actual position of mobile phone 300. It is likely to show. On the other hand, when the mobile phone 300 is located in the building 20, the GPS radio wave reception strength is lower than outdoors, so the GPS positioning processing result may not indicate a location corresponding to the actual location of the mobile phone 300. . The information processing apparatus 100 according to the present embodiment uses the positioning result information when the GPS radio wave reception intensity is high as a reference, and determines whether the positioning result information when the GPS radio wave reception intensity is low is correct information or incorrect information. Determine.

  The information processing apparatus 100 may acquire a plurality of positioning result information uploaded by the mobile phone 300 to the information collecting apparatus 200. The mobile phone 300 may upload the positioning result information to the information collection device 200 via the network 10. The network 10 includes, for example, a telephone network and the Internet. The mobile phone 300 receives information via the network 10 via a radio base station of a mobile communication system such as 3G, LTE (Long Term Evolution), and 4G, and a wireless base station of WiFi (registered trademark) (Wireless Fidelity). The positioning result information may be uploaded to the collection device 200.

  The information processing apparatus 100 may receive data from the information collection apparatus 200 via the network 10. The information processing apparatus 100 may receive data from the information collection apparatus 200 via a dedicated network such as an in-house network, or may receive data directly from the information collection apparatus 200. Note that the information processing apparatus 100 may also serve as the information collection apparatus 200. In this case, the mobile phone 300 uploads positioning result information to the information processing apparatus 100.

  The mobile phone 300 receives GPS radio waves using a GPS antenna. The mobile phone 300 executes GPS positioning processing and acquires position information indicating the position of the positioning result. The mobile phone 300 may upload positioning result information including the position information, timing information indicating the timing at which the GPS positioning process is executed, and reception intensity information regarding the reception intensity of GPS radio waves to the information collection device 200. The mobile phone 300 executes GPS positioning processing at regular intervals, such as every second, and stores positioning result information. Each time a predetermined period elapses, a plurality of stored positioning results are stored. Information is uploaded to the information collection device 200.

  The reception intensity information may include the reception intensity of GPS radio waves received from at least one GPS satellite. The reception intensity information may include the reception intensity of GPS radio waves received from each of a plurality of GPS satellites. The reception intensity information may include the number of GPS satellites that the mobile phone 300 is capturing. The captured GPS satellite may be a GPS satellite from which the mobile phone 300 is receiving GPS radio waves. The reception intensity information may include a derived value derived from the reception intensity of each of the plurality of GPS satellites and the number of GPS satellites. The reception strength information may include information indicating whether the derived value is higher than a predetermined threshold.

  The mobile phone 300 may further include an atmospheric pressure sensor. The mobile phone 300 measures the atmospheric pressure at the point where the mobile phone 300 is located using an atmospheric pressure sensor. The positioning result information may include the atmospheric pressure when the mobile phone 300 executes the positioning process.

  The mobile phone 300 may further include an acceleration sensor. The positioning result information may include an acceleration when the mobile phone 300 executes a positioning process. The mobile phone 300 may further include a gyro sensor. The positioning result information may include an angular velocity when the mobile phone 300 executes the positioning process. The mobile phone 300 may derive the moving speed of the mobile phone 300 using an acceleration sensor and a gyro sensor. The positioning result information may include the moving speed of the mobile phone 300 when the mobile phone 300 executes the positioning process.

  For example, the information processing apparatus 100 sets multiple pieces of positioning result information as correct information or incorrect information according to the following flow. First, the information processing apparatus 100 sets, as positive information, positioning result information whose reception intensity information is higher than a predetermined threshold among a plurality of continuous positioning result information uploaded by the mobile phone 300, and the reception intensity information is the threshold value. Lower positioning result information is used as provisional error information.

  Next, the information processing apparatus 100 identifies two pieces of correct information that sandwich at least one provisional error information. For example, if the positioning process is executed while the owner of the mobile phone 300 enters the building 20 from outside the building 20, moves inside the building 20, and goes out of the building 20, The positioning result information is the correct information, and the positioning result information in the building 20 is provisional error information.

  Then, the information processing apparatus 100 sequentially determines whether the plurality of provisional error information is correct information along the temporal direction from one of the two correct information to the other, and the two comparison information Temporary error information sandwiched between two pieces of correct information based on a second comparison result that sequentially determines whether or not a plurality of pieces of temporary error information are to be correct information along a temporal direction from the other to one of the correct information. Each of these is assumed to be correct information or incorrect information.

  FIG. 2 is an explanatory diagram illustrating an example of processing performed by the information processing apparatus 100. Position 41 to position 54 are those in which the owner of the mobile phone 300 moves from outside the building 20 through the doorway 22 into the building 20 and moves inside the building 20 and moves out of the building 20 through the doorway 24. The position of the positioning result obtained by the mobile phone 300 continuously performing the positioning process is shown. Here, the position 41, the position 42, the position 53, and the position 54 indicated by the positioning result information whose reception intensity information is higher than the threshold are indicated by white circles, and the position 52 from the position 43 indicated by the positioning result information whose reception intensity information is lower than the threshold is indicated. It is shown as a hatched circle.

  First, the information processing apparatus 100 specifies two pieces of positioning result information sandwiching the positioning result information whose reception intensity information is lower than the threshold value from the positioning result information whose reception intensity information is higher than the threshold value as reference positive information. Positioning result information sandwiched between correct information is assumed to be provisional error information. Here, the description will be continued assuming that the position 42 and the position 53 are specified as reference correct information, and the position 43 to the position 52 are specified as provisional error information. First, the information processing apparatus 100 derives a first comparison result that sequentially determines whether a plurality of provisional error information is correct information along the temporal direction from the position 42 to the position 53.

  When the distance between the position indicated by the temporary error information that is temporally continuous with the correct information and the position indicated by the correct information is shorter than the threshold, the information processing apparatus 100 sets the temporary error information as the correct information. For example, since the distance between the position 42 and the position 43 is shorter than the threshold value, the information processing apparatus 100 sets the positioning result information indicating the position 43 as positive information. Similarly, the information processing apparatus 100 sets the positioning result information indicating the position 44 and the positioning result information indicating the position 45 as positive information.

  When the distance between the position indicated by the temporary error information that is temporally consecutive to the correct information and the position indicated by the correct information is longer than the threshold, the information processing apparatus 100 leaves the temporary error information as the temporary error information, The distance between the position of the temporary error information that is temporally continuous with the temporary error information and the position of the correct information is compared with a threshold. The information processing apparatus 100 sequentially repeats this process until the distance between the position of the provisional error information and the position of the correct information becomes shorter than the threshold value. When it is determined that the position of the provisional error information and the position and distance of the correct information are shorter than the threshold, the provisional error information is set as correct information.

  For example, since the distance between the position 45 and the position 46 is longer than the threshold, the information processing apparatus 100 leaves the positioning result information indicating the position 46 as temporary error information, and the position 47 and the position that are temporally continuous to the position 46. The distance to 45 is compared with a threshold value. Since the distance between the position 47 and the position 45 is longer than the threshold value, the information processing apparatus 100 keeps the positioning result information indicating the position 47 as temporary error information, and the positions 48 and 45 that are temporally continuous to the position 47 Is compared with a threshold. Since the distance between the position 48 and the position 45 is shorter than the threshold, the information processing apparatus 100 sets the positioning result information indicating the position 48 as positive information.

  Since the distance between the position 48 and the position 49 is shorter than the threshold, the information processing apparatus 100 sets the positioning result information indicating the position 49 as positive information. Similarly, the information processing apparatus 100 sets the positioning result information indicating each of the position 50, the position 51, and the position 52 as positive information. As described above, the information processing apparatus 100 uses the positioning result information indicating the position 43 to the position 45 and the position 48 to the position 52 as the positive information, and the positioning result information indicating the position 46 and the position 47 as the positive information. A first comparison result that is not determined and remains as provisional error information is derived.

  Subsequently, the information processing apparatus 100 derives a second comparison result that sequentially determines whether or not a plurality of provisional error information is correct information along a temporal direction from the position 53 to the position 42. Since the distance between the position 53 and the position 52 is shorter than the threshold value, the information processing apparatus 100 sets the positioning result information indicating the position 52 as positive information. Similarly, the information processing apparatus 100 sets the positioning result information indicating each of the position 51, the position 50, the position 49, and the position 48 as positive information.

  Since the distance between the position 48 and the position 47 is longer than the threshold, the information processing apparatus 100 keeps the positioning result information indicating the position 47 as temporary error information, and the positions 46 and 48 that are temporally continuous to the position 47 Is compared with a threshold. Since the distance between the position 46 and the position 48 is longer than the threshold, the information processing apparatus 100 keeps the positioning result information indicating the position 46 as tentative error information, and the positions 45 and 48 that are temporally continuous to the position 46. Is compared with a threshold. Since the distance between the position 45 and the position 48 is shorter than the threshold, the information processing apparatus 100 sets the positioning result information indicating the position 45 as positive information.

  The information processing apparatus 100 sets the positioning result information indicating the position 44 as positive information because the distance between the position 45 and the position 44 is shorter than the threshold. The information processing apparatus 100 sets the position 43 as positive information because the distance between the position 44 and the position 43 is shorter than the threshold. As described above, the information processing apparatus 100 uses the positioning result information indicating the position 52 to the position 48 and the position 45 to the position 43 as the positive information, and the positioning result information indicating the position 46 and the position 47 as the positive information. A second comparison result that is not determined but remains as provisional error information is derived.

  The information processing apparatus 100 sets each of the positioning result information indicating the position 52 to the position 52 as correct information or incorrect information based on the first comparison result and the second comparison result. For example, in both the first comparison result and the second comparison result, the information processing apparatus 100 sets provisional error information that is not determined to be correct information as incorrect information, and sets the other information as correct information. In the example shown in FIG. 2, only the position 46 and the position 47 are erroneous information, and the other information is correct information. Further, for example, the information processing apparatus 100 may set provisional error information that is not determined to be correct information in at least one of the first comparison result and the second comparison result as error information, and may set other information as correct information.

  The information processing apparatus 100 may use a fixed threshold as the above-described threshold. For example, when the moving speed of the holder of the mobile phone 300 is specified to some extent in advance, the fixed threshold value may be determined based on the moving speed and the timing of executing the positioning process by the mobile phone 300.

  The information processing apparatus 100 may determine a threshold value to be compared with the distance between the two positions based on the position information and timing information included in the two positioning result information indicating the two positions to be compared. For example, when the information processing apparatus 100 compares the distance between the position 43 and the position 44 with a threshold value, the longer the period between the timing at which the position 43 is located and the timing at which the position 44 is located, the larger the value. Use a threshold. Thus, by determining the threshold based on the timing information included in the two positioning result information, for example, the threshold compared with the distance between the position 45 and the position 48 is compared with the distance between the position 43 and the position 44. The value is larger than the threshold value.

  The information processing apparatus 100 may determine the threshold based on timing information and position information of a plurality of positioning result information whose reception intensity information is higher than a predetermined threshold. For example, the information processing apparatus 100 calculates a moving speed when moving from the position 41 to the position 42 from the positioning result information indicating the position 41 and the positioning result information indicating the position 42, and sets the threshold based on the moving speed. decide. Conceptually, the information processing apparatus 100 may increase the threshold value as the moving speed increases.

  The information processing apparatus 100 calculates the moving speed from the correct information and the correct information before the correct information when comparing the position of the provisional error information continuous to the correct information and the position of the correct information with the threshold value. Thus, the threshold value may be determined based on the moving speed. For example, the information processing apparatus 100 calculates a moving speed when moving from the position 43 to the position 44 from the positioning result information indicating the position 43 and the positioning result information indicating the position 44, and based on the moving speed, A threshold value to be compared with the distance between 44 and position 45 is determined.

  When the positioning result information includes the moving speed of the mobile phone 300, the information processing apparatus 100 may determine the threshold based on the moving speed. For example, when the distance between the position 43 and the position 44 is compared with the threshold, the information processing apparatus 100 uses the threshold determined based on the movement speed included in the positioning result information indicating the position 44.

  FIG. 3 is an explanatory diagram for explaining an example of processing by the information processing apparatus 100. Positions 61 to 66 indicate that the holder of the mobile phone 300 moves from outside the building 20 through the doorway 22 into the building 20, moves inside the building 20, and moves out of the building 20 through the doorway 24. The position of the positioning result obtained by the mobile phone 300 continuously performing the positioning process is shown. FIG. 3 shows a case where the GPS positioning function of the mobile phone 300 freezes after positioning the position 64 and the GPS positioning function returns after exiting the building 20 from the entrance 24.

  The information processing apparatus 100 first determines the first comparison result that sequentially determines whether the positioning result information indicating each of the position 62 to the position 65 is the correct information along the temporal direction from the position 61 to the position 66. To derive. Since the distance between the position 61 and the position 62 is shorter than the threshold, the information processing apparatus 100 sets the positioning result information indicating the position 62 as positive information. The information processing apparatus 100 sets the positioning result information indicating the position 63 as positive information because the distance between the position 62 and the position 63 is shorter than the threshold. The information processing apparatus 100 sets the positioning result information indicating the position 64 as positive information because the distance between the position 63 and the position 64 is shorter than the threshold. Since the distance between the position 64 and the position 65 is longer than the threshold, the information processing apparatus 100 keeps the positioning result information indicating the position 65 as temporary information.

  Next, the information processing apparatus 100 uses the second comparison result that sequentially determines whether the positioning result information indicating each of the position 65 to the position 62 is the positive information along the temporal direction from the position 66 to the position 61. To derive. The information processing apparatus 100 sets the positioning result information indicating the position 65 as positive information because the distance between the position 66 and the position 65 is shorter than the threshold. Since the distance between the position 65 and the position 64 is longer than the threshold, the information processing apparatus 100 keeps the positioning result information indicating the position 64 as provisional error information. Similarly, the information processing apparatus 100 leaves the positioning result information indicating the position 63 and the positioning result information indicating the position 62 as provisional error information.

  In this example, the information processing apparatus 100 sets provisional error information that is not determined to be correct information in both the first comparison result and the second comparison result as error information, and sets other information as correct information. Here, all of the positions 62 to 65 are set as positive information.

  For example, when a technique for detecting a positional deviation based on a movement distance and a movement direction from the immediately preceding position information is adopted, in the example shown in FIG. 3, the positions 62, 63, and 64 are determined as positive information. Since the position 65 is not within the range that can be predicted from 64, the position 65, the position 66, and the position 67 are detected as misalignment. On the other hand, according to the information processing apparatus 100 according to the present embodiment, two pieces of positive information serving as a reference are specified from the positioning result information whose reception intensity information is higher than the threshold, and from one of the two pieces of positive information. Since the first comparison result along the temporal direction heading to the other side and the second comparison result along the temporal direction heading from the other side to the other side are considered, it is determined whether it is correct information or incorrect information. Can reduce the possibility that positioning result information indicating the correct position is determined to be erroneous information.

  FIG. 4 is an explanatory diagram illustrating an example of processing performed by the information processing apparatus 100. Here, a case where a plurality of positioning result information acquired by the information processing apparatus 100 includes only information corresponding to the position 41 to the position 50 is illustrated.

  Thus, when only the positioning result information whose reception intensity information is lower than the threshold follows the positioning result information whose reception intensity information is higher than the threshold, the information processing apparatus 100 determines the positioning result information whose reception intensity information is higher than the threshold. One positioning result information may be identified as reference correct information, and positioning result information having received intensity information lower than a threshold value after the correct information may be identified as provisional error information. Then, when the distance between the position indicated by the temporary error information continuous to the correct information and the position indicated by the correct information is longer than the threshold, the information processing apparatus 100 may use the temporary error information as the incorrect information.

  In the example illustrated in FIG. 4, the information processing apparatus 100 sets the positioning result information indicating the position 43 as positive information because the distance between the position 42 and the position 43 is shorter than the threshold. Similarly, the information processing apparatus 100 sets the positioning result information indicating the position 44 and the positioning result information indicating the position 45 as positive information.

  Further, since the distance between the position 45 and the position 46 is longer than the threshold, the information processing apparatus 100 sets the position 46 as erroneous information and compares the distance between the position 47 and the position 45 that are temporally continuous with the position 46 with the threshold. To do. Since the distance between the position 47 and the position 45 is longer than the threshold, the information processing apparatus 100 sets the position 47 as erroneous information and compares the distance between the position 48 and the position 45 that are temporally continuous to the position 47 with the threshold. Since the distance between the position 48 and the position 45 is shorter than the threshold, the information processing apparatus 100 sets the positioning result information indicating the position 48 as positive information. Since the distance between the position 48 and the position 49 is shorter than the threshold, the information processing apparatus 100 sets the positioning result information indicating the position 49 as positive information. Since the distance between the position 49 and the position 50 is shorter than the threshold, the information processing apparatus 100 sets the positioning result information indicating the position 50 as positive information.

  FIG. 5 is an explanatory diagram for explaining an example of processing by the information processing apparatus 100. Here, a case where a plurality of positioning result information acquired by the information processing apparatus 100 includes only information corresponding to the position 44 to the position 54 is illustrated.

  As described above, when only the positioning result information whose reception intensity information is lower than the threshold follows the positioning result information whose reception intensity information is higher than the threshold, the information processing apparatus 100 determines the positioning result whose reception intensity information is higher than the threshold. One piece of positioning result information may be specified from the information as reference positive information, and positioning result information whose reception intensity information is lower than a threshold value before the positive information may be specified as provisional error information. When the distance between the position indicated by the temporary error information continuous in the previous direction of the correct information and the position indicated by the correct information is longer than the threshold, the information processing apparatus 100 determines that the incorrect error information is the incorrect information. As good as

  In the example illustrated in FIG. 5, the information processing apparatus 100 sets the positioning result information indicating the position 52 as positive information because the distance between the position 53 and the position 52 is shorter than the threshold. Similarly, the information processing apparatus 100 sets the positioning result information indicating each of the position 51, the position 50, the position 49, and the position 48 as positive information.

  Further, since the distance between the position 48 and the position 47 is longer than the threshold, the information processing apparatus 100 sets the position 47 as erroneous information and compares the distance between the position 46 and the position 48 that are temporally continuous to the position 47 with the threshold. To do. Since the distance between the position 46 and the position 48 is longer than the threshold, the information processing apparatus 100 sets the position 46 as erroneous information, and compares the distance between the position 45 and the position 48 that are temporally continuous with the position 46 with the threshold. Since the distance between the position 45 and the position 48 is shorter than the threshold, the information processing apparatus 100 sets the positioning result information indicating the position 45 as positive information. The information processing apparatus 100 sets the positioning result information indicating the position 44 as positive information because the distance between the position 45 and the position 44 is shorter than the threshold.

  FIG. 6 schematically illustrates an example of a functional configuration of the information processing apparatus 100. The information processing apparatus 100 includes an information reception unit 102, an information storage unit 104, an information acquisition unit 106, an information classification unit 108, a correct / incorrect determination unit 110, and an information specification unit 112. Note that it is not essential that the information processing apparatus 100 includes all of these configurations.

  The information receiving unit 102 receives positioning result information collected from the mobile phone 300 by the information collecting device 200 from the information collecting device 200. When the information processing apparatus 100 also functions as the information collecting apparatus 200, the information receiving unit 102 receives data from a plurality of mobile phones 300. The information storage unit 104 stores the positioning result information received by the information receiving unit 102.

  The information acquisition unit 106 acquires positioning result information stored in the information storage unit 104. The information acquisition unit 106 acquires, from the information storage unit 104, a plurality of positioning result information designated by the user who uses the information processing apparatus 100, for example. The information acquisition unit 106 selects at least one piece of positioning result information whose reception intensity information is lower than a predetermined threshold value from among positioning result information whose reception intensity information is higher than a predetermined threshold value among a plurality of continuous positioning result information. Positioning result information sandwiched between them may be automatically acquired.

  When the positioning result information stored in the information storage unit 104 includes atmospheric pressure and acceleration, the information acquisition unit 106 includes a plurality of positionings in which the acceleration and the atmospheric pressure do not satisfy predetermined conditions among the plurality of positioning result information. Result information may be obtained. That is, the information acquisition unit 106 may exclude a plurality of pieces of positioning result information satisfying predetermined conditions for acceleration and atmospheric pressure from among a plurality of pieces of positioning result information.

  The predetermined condition may be that the acceleration and the atmospheric pressure indicate that the mobile phone 300 is located in the elevator. For example, when changes in acceleration and atmospheric pressure between a plurality of positioning result information indicate characteristics that appear when the mobile phone 300 is located in an elevator, the information acquisition unit 106 acquires the plurality of positioning result information. Exclude from

  The information classification unit 108 sets the positioning result information whose reception intensity information is higher than a predetermined threshold among the plurality of positioning result information acquired by the information acquisition unit 106 as positive information, and the positioning result whose reception intensity information is lower than the threshold. The information is assumed to be temporary error information.

  The correctness determination unit 110 sets the temporary error information as correct information or incorrect information based on a comparison result of comparing the timing information and position information of the temporary error information with the timing information and position information of the correct information. The correct / incorrect determination unit 110 may set the temporary error information as correct information or incorrect information based on a comparison result of comparing the position information of the temporary error information that is temporally continuous with the correct information and the position information of the correct information. . Continuing with the positive information in time may include continuing with the positive information in the previous direction in time and continuing with the positive information in the subsequent direction in time. When the distance between the position indicated by the position information of the temporary error information that continues to the correct information in time and the position indicated by the position information of the correct information is shorter than a predetermined threshold, the correct / incorrect determination unit 110 The information may be correct information. The predetermined threshold value may be a threshold value determined at an arbitrary timing before being used for comparison.

  When the distance between the position indicated by the position information of the temporary error information that is continuous with the correct information in time and the position indicated by the position information of the correct information are longer than a predetermined threshold, the correct / incorrect determination unit 110 The information may be left as temporary error information. In addition, when the distance between the position indicated by the position information of the temporary error information continuous to the correct information in time and the position indicated by the position information of the correct information is longer than a predetermined threshold, Temporary error information may be error information.

  When the distance between the position indicated by the provisional error information that is continuous with the correct information in time and the position indicated by the position information of the correct information is longer than a predetermined threshold, the correct / incorrect determination unit 110 Sequentially compare the distance between the position indicated by the position information and the position indicated by the position information of the temporary error information that is temporally continuous after the temporary error information, and the temporary error information whose distance is shorter than a predetermined threshold value. It may be positive information.

  The correct / incorrect determination unit 110 determines the distance between the position indicated by the position information of the temporary error information that is temporally continuous with the correct information and the position indicated by the position information of the correct information, the position information of the correct information, and the timing information, By comparing the threshold information determined based on the position information and timing information of the provisional error information, the provisional error information may be correct information or error information. For example, the correct / incorrect determination unit 110 calculates the moving speed of the mobile phone 300 using the position information and timing information of the correct information and the position information and timing information of the temporary error information, and the longer the moving speed, the longer the distance. Is used for comparison.

  The correctness determination unit 110 may determine the threshold based on timing information and position information of a plurality of positioning result information whose reception intensity information is higher than a predetermined threshold. For example, the correctness determination unit 110 calculates the moving speed of the mobile phone 300 using the timing information and the position information of the continuous positioning result information whose reception intensity information is higher than a predetermined threshold, and the higher the moving speed, the longer the moving speed is. A threshold value indicating the distance is determined and used for comparison.

  The correctness determination unit 110 includes timing information and position information of the first provisional error information as correct information, and timing information of second provisional error information that is temporally continuous with the first provisional error information as correct information. And the threshold value determined based on the position information, the position indicated by the position information of the second provisional error information, and the position indicated by the position information of the third provisional error information that is temporally continuous to the second provisional error information. Based on the distance, the third provisional error information may be correct information or error information.

  The information specifying unit 112 includes two pieces of correct information that temporally sandwich a plurality of provisional error information from the positioning result information whose reception intensity information is higher than a predetermined threshold among the plurality of positioning result information acquired by the information acquisition unit 106. Identify information. When the two pieces of correct information are specified by the information specifying unit 112, the correct / incorrect determining unit 110 sets the plurality of pieces of temporary incorrect information as correct information along a temporal direction from one of the two pieces of correct information to the other. A first comparison result that sequentially determines whether the plurality of provisional error information is correct information along a temporal direction from the other one of the two correct information to the other Based on the result, each of the plurality of provisional error information may be correct information or error information. For example, the correct / incorrect determination unit 110 sets, as incorrect information, temporary error information that has not been determined to be correct information in both the first comparison result and the second comparison result among the plurality of temporary error information, and correct information other than that. And In addition, the correct / incorrect determination unit 110 sets, as incorrect information, temporary error information that is not determined to be correct information in at least one of the first comparison result and the second comparison result among the plurality of temporary error information, and corrects the other information. It may be information.

  FIG. 7 is an explanatory diagram for explaining the reception intensity of GPS radio waves by the mobile phone 300. The mobile phone 300 acquires the reception intensity of GPS radio waves from each of the plurality of GPS satellites 30. The mobile phone 300 may include the reception intensity of GPS radio waves from each of the plurality of GPS satellites 30 in the reception intensity information. The mobile phone 300 may include the number of captured GPS satellites in the received intensity information.

  When the reception intensity information included in the positioning result information is higher than a predetermined threshold, the information processing apparatus 100 may use the positioning result information as correct information. For example, when the value derived from the reception intensity from the plurality of GPS satellites 30 included in the reception intensity information of the positioning result information is higher than a predetermined threshold, the information processing apparatus 100 may make the positioning result information positive information. . As a specific example, the information processing apparatus 100 has a value obtained by adding 2 points when the reception intensity is stronger than a predetermined threshold value, and 0.5 points when the reception intensity is weaker than a predetermined threshold value. If it is higher than the point, the information is correct.

  According to the example shown in FIG. 7, the mobile phone 320 receives radio waves from two GPS satellites 30, both of which have a reception intensity higher than a predetermined threshold value, so that 2 points are multiplied by 2 4 Points are calculated. Therefore, the positioning result information generated by the mobile phone 320 at this time is made positive information by the information acquisition unit 106.

  Further, since the mobile phone 330 receives radio waves from the four GPS satellites 30 and all received radio wave strengths are weaker than a predetermined threshold value, 2 points obtained by multiplying 0.5 points by 4 are calculated. . Accordingly, the positioning result information generated by the mobile phone 330 at this time is not correct information, but is provisionally erroneous information by the information acquisition unit 106.

  Note that the points assigned when the received intensity is higher than a predetermined threshold and the points assigned when the received intensity is low are not limited to this, and may be other points. Alternatively, two or more threshold values may be provided and three or more points may be assigned. Moreover, the threshold value compared with the value which added the point is not restricted to 3 points, and may be another point. Further, instead of adding points, an average of points may be compared with a threshold value.

  In the embodiment described above, the case where the information processing apparatus 100 executes the process of determining whether the positioning result information is correct information or incorrect information has been mainly described as an example. 300 may execute a process of determining whether its own positioning result information is correct information or incorrect information.

  FIG. 8 schematically shows an example of the functional configuration of the mobile phone 300. The mobile phone 300 includes a positioning processing execution unit 302, a sensor information acquisition unit 304, a positioning result information generation unit 308, an information storage unit 310, an information acquisition unit 312, an information classification unit 314, a correctness determination unit 316, and an information specification unit 318. Prepare. Note that the mobile phone 300 is not necessarily required to have all of these configurations.

  The positioning process execution unit 302 executes a positioning process. The positioning process execution unit 302 executes the positioning process in accordance with, for example, an instruction from the owner of the mobile phone 300. The positioning process execution unit 302 executes the positioning process continuously for a predetermined period, for example, according to a predetermined schedule. The positioning process execution unit 302 may execute the GPS positioning process at regular intervals such as every second.

  The sensor information acquisition unit 304 acquires information detected by a sensor included in the mobile phone 300 when the positioning process execution unit 302 executes the positioning process. The sensor information acquisition unit 304 acquires acceleration, for example. The sensor information acquisition unit 304 may acquire the angular velocity. The sensor information acquisition unit 304 may acquire the atmospheric pressure. The sensor information acquisition unit 304 may acquire the movement speed.

  The positioning result information generation unit 308 generates positioning result information. The positioning result information generation unit 308 includes a positioning result including timing information indicating the timing at which the positioning processing execution unit 302 executes the positioning process, position information indicating the position of the positioning result, and reception intensity information regarding the reception intensity of the GPS radio wave. Information may be generated. The positioning result information generation unit 308 may generate positioning result information including information acquired by the sensor information acquisition unit 304. The information storage unit 310 stores the positioning result information generated by the positioning result information generation unit 308.

  The information acquisition unit 312 may execute the same processing as the information acquisition unit 106. The information classification unit 314 may execute the same processing as the information classification unit 108. The correctness determination unit 316 may perform the same processing as the correctness determination unit 110. The information specifying unit 318 may execute the same process as the information specifying unit 112.

  FIG. 9 schematically illustrates an example of a computer 1000 that functions as the information processing apparatus 100. The computer 1000 according to this embodiment includes a CPU peripheral unit including a CPU 1010, a RAM 1030, and a graphic controller 1085 that are connected to each other by a host controller 1092; a ROM 1020 that is connected to the host controller 1092 by an input / output controller 1094; An input / output unit having F1040, a hard disk drive 1050, a DVD drive 1070, and an input / output chip 1080 is provided.

  The CPU 1010 operates based on programs stored in the ROM 1020 and the RAM 1030 and controls each unit. The graphic controller 1085 acquires image data generated by the CPU 1010 or the like on a frame buffer provided in the RAM 1030 and displays the image data on the display 1090. Alternatively, the graphic controller 1085 may include a frame buffer that stores image data generated by the CPU 1010 or the like.

  The communication I / F 1040 communicates with other devices via a network by wire or wireless. The communication I / F 1040 functions as hardware that performs communication. The hard disk drive 1050 stores programs and data used by the CPU 1010. The DVD drive 1070 reads a program or data from the DVD-ROM 1072 and provides it to the hard disk drive 1050 via the RAM 1030.

  The ROM 1020 stores a boot program executed when the computer 1000 is started up, a program depending on the hardware of the computer 1000, and the like. The input / output chip 1080 connects various input / output devices to the input / output controller 1094 via, for example, a parallel port, a serial port, a keyboard port, a mouse port, and the like.

  A program provided to the hard disk drive 1050 via the RAM 1030 is stored in a recording medium such as a DVD-ROM 1072 or an IC card and provided by a user. The program is read from the recording medium, installed in the hard disk drive 1050 via the RAM 1030, and executed by the CPU 1010.

  A program that is installed in the computer 1000 and causes the computer 1000 to function as the information processing apparatus 100 may work on the CPU 1010 or the like to cause the computer 1000 to function as each unit of the information processing apparatus 100. The information processing described in these programs is read by the computer 1000, whereby the information receiving unit 102, the information storing unit 104, which are specific means in which the software and the various hardware resources described above cooperate. It functions as the information acquisition unit 106, the information classification unit 108, the correctness determination unit 110, and the information identification unit 112. And the specific information processing apparatus 100 according to the intended purpose is constructed | assembled by implement | achieving the calculation or processing of the information according to the intended purpose of the computer 1000 in this embodiment by these specific means.

  In the above embodiment, the mobile phone 300 has been described as an example of the communication terminal. However, the present invention is not limited thereto, and may be a tablet terminal, a PC, or the like as long as it has a GPS positioning function.

  FIG. 10 shows an example of a hardware configuration of a computer 1100 that functions as the mobile phone 300. A computer 1100 according to this embodiment includes a SoC 1110, a main memory 1122, a flash memory 1124, an antenna 1132, an antenna 1134, a display 1140, a microphone 1142, a speaker 1144, a USB port 1152, and a card slot 1154.

  The SoC 1110 operates based on programs stored in the main memory 1122 and the flash memory 1124 and controls each unit. The antenna 1132 is a so-called cellular antenna. The antenna 1134 is a so-called WiFi (registered trademark) antenna. The SoC 1110 may implement various communication functions using the antenna 1132 and the antenna 1134. For example, the SoC 1110 may receive a program used by the SoC 1110 using the antenna 1132 or the antenna 1134 and store the program in the flash memory 1124.

  The SoC 1110 may implement various display functions using the display 1140. The SoC 1110 may implement various voice input functions using the microphone 1142. The SoC 1110 may implement various audio output functions using the speaker 1144.

  The USB port 1152 implements USB connection. The card slot 1154 realizes connection with various cards such as an SD card. The SoC 1110 may receive a program used by the SoC 1110 from a device or memory connected to the USB port 1152 and a card connected to the card slot 1154 and store the program in the flash memory 1124.

  A program that is installed in the computer 1100 and causes the computer 1100 to function as the mobile phone 300 may work on the SoC 1110 or the like to cause the computer 1100 to function as each unit of the mobile phone 300. The information processing described in these programs is read by the computer 1100, whereby the positioning processing execution unit 302, which is a specific means in which the software and the various hardware resources described above cooperate, a sensor information acquisition unit It functions as 304, positioning result information generation unit 308, information storage unit 310, information acquisition unit 312, information classification unit 314, correctness determination unit 316, and information identification unit 318. And the specific mobile phone 300 according to the use purpose is constructed | assembled by implement | achieving the calculation or processing of the information according to the use purpose in this embodiment by these specific means.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

  The order of execution of each process such as operations, procedures, steps, and stages in the apparatus, system, program, and method shown in the claims, the description, and the drawings is particularly “before” or “prior to”. It should be noted that it can be realized in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flow in the claims, the description, and the drawings, even if it is described using “first,” “next,” etc. for convenience, it means that it is essential to carry out in this order. It is not a thing.

10 networks, 20 buildings, 22 gateways, 24 gateways, 30 GPS satellites, 41 positions, 42 positions, 43 positions, 44 positions, 45 positions, 46 positions, 47 positions, 48 positions, 49 positions, 50 positions, 51 positions, 52 Position, 53 position, 54 position, 61 position, 62 position, 63 position, 64 position, 65 position, 66 position, 100 information processing apparatus, 102 information receiving section, 104 information storage section, 106 information acquisition section, 108 information classification section 110 correctness determination unit 112 information identification unit 200 information collection device 300 mobile phone 302 positioning processing execution unit 304 sensor information acquisition unit 308 positioning result information generation unit 310 information storage unit 312 information acquisition unit 314 Information classification unit, 316 correctness determination unit, 318 information identification unit, 320 mobile phone 330 mobile phone, 1000 computer, 1010 CPU, 1020 ROM, 1030 RAM, 1040 communication I / F, 1050 hard disk drive, 1070 DVD drive, 1072 DVD-ROM, 1080 input / output chip, 1085 graphic controller, 1090 display, 1092 host controller 1094 I / O controller, 1100 computer, 1110 SoC, 1122 main memory, 1124 flash memory, 1132 antenna, 1134 antenna, 1140 display, 1142 microphone, 1144 speaker, 1152 USB port, 1154 card slot

Claims (17)

An information acquisition unit for acquiring positioning result information including timing information indicating the timing at which the communication terminal has performed the GPS positioning process, position information indicating the position of the positioning result, and reception intensity information regarding the reception intensity of the GPS radio wave;
Among the plurality of positioning result information, an information classifying unit in which the positioning result information whose reception intensity information is higher than a predetermined threshold is correct information and the positioning result information whose reception intensity information is lower than the threshold is temporary error information When,
Information comprising: a correct / incorrect determination unit that sets the temporary error information as correct information or error information based on a comparison result of comparing the timing information and position information of the temporary error information with the timing information and position information of the correct information. Processing equipment.   The correct / incorrect determination unit determines whether the temporary error information is correct information or incorrect information based on a comparison result of comparing the position information of the temporary error information that is temporally continuous with the correct information and the position information of the correct information. The information processing apparatus according to claim 1.   When the distance between the position indicated by the position information of the temporary error information and the position indicated by the position information of the correct information is shorter than a predetermined threshold, The information processing apparatus according to claim 2, wherein the provisional error information is correct information.   When the distance between the position indicated by the temporary error information that is continuous with the correct information and the position indicated by the positional information of the correct information is longer than the threshold, the correct / incorrect determination unit The information processing apparatus according to claim 3, wherein the information is misinformation.   When the distance between the position indicated by the position information of the temporary error information that is temporally continuous to the correct information and the position indicated by the position information of the correct information is longer than the threshold, the correct / incorrect determination unit The distance between the position indicated by the position information and the position indicated by the position information of the temporary error information that is temporally continuous after the temporary error information is sequentially compared, and the temporary error information whose distance is shorter than a predetermined threshold is corrected. The information processing apparatus according to claim 3, wherein the information processing apparatus is information.   The correct / incorrect determination unit calculates the distance between the position indicated by the position information of the temporary error information that is temporally continuous to the correct information and the position indicated by the position information of the correct information, and the position information and timing information of the correct information. And the provisional error information as correct information or error information by comparing with the threshold value determined based on the position information and timing information of the provisional error information, according to any one of claims 3 to 5. Information processing device.   The right / wrong determination unit determines the threshold based on timing information and position information of a plurality of the positioning result information in which the reception strength information is higher than a predetermined threshold. The information processing apparatus described in 1.   The correct / incorrect determination unit includes the timing information and position information of the first provisional error information as correct information, and the timing of second provisional error information that is temporally continuous with the first provisional error information as correct information. The threshold value determined based on the information and the position information, the position indicated by the position information of the second temporary error information, and the position information of the third temporary error information that is temporally continuous to the second temporary error information indicate The information processing apparatus according to claim 3, wherein the third provisional error information is correct information or error information based on a distance to the position. Among the plurality of positioning result information, an information specifying unit that specifies two pieces of correct information that temporally sandwich the plurality of provisional error information from the positioning result information in which the reception intensity information is higher than a predetermined threshold value,
The correct / incorrect determination unit sequentially determines whether the plurality of provisional error information is correct information along a temporal direction from one of the two correct information to the other, and the 2 The plurality of pieces of temporary error information based on a second comparison result in which whether the plurality of pieces of temporary error information are to be correct information along the temporal direction from the other to the one of the two pieces of correct information is sequentially determined. The information processing apparatus according to claim 1, wherein each of the information is correct information or incorrect information.   The correct / incorrect determination unit sets, as incorrect information, temporary error information that has not been determined to be correct information in both the first comparison result and the second comparison result among the plurality of temporary error information. The information processing apparatus according to claim 9, which is information.   The correct / incorrect determination unit sets, as misinformation, provisional error information that is not determined to be correct information in at least one of the first comparison result and the second comparison result among the plurality of provisional error information. The information processing apparatus according to claim 9, wherein the information processing apparatus is positive information. The positioning result information includes the number of a plurality of GPS satellites captured by the communication terminal, and the reception intensity of each GPS radio wave of the plurality of GPS satellites,
The information classification unit uses as a positive information positioning result information in which a derived value derived from the number of the plurality of GPS satellites and the reception intensity of each GPS radio wave of the plurality of GPS satellites is higher than a predetermined threshold value, The information processing apparatus according to any one of claims 1 to 11, wherein positioning result information whose derived value is lower than the threshold is provisional error information. The positioning result information includes the acceleration of the communication terminal acquired by the acceleration sensor of the communication terminal when the communication terminal receives the GPS radio wave, and the atmospheric pressure acquired by the pressure sensor of the communication terminal. Including
The information classifying unit sets, as positive information, positioning result information in which the received intensity information is higher than a predetermined threshold among the plurality of positioning result information in which the acceleration and the atmospheric pressure do not satisfy a predetermined condition, The information processing apparatus according to any one of claims 1 to 12, wherein positioning result information whose reception intensity information is lower than the threshold value is provisional error information.   A program for causing a computer to function as the information processing apparatus according to any one of claims 1 to 13. Positioning result information acquisition step for acquiring positioning result information including timing information indicating the timing at which the communication terminal has executed the GPS positioning processing, position information indicating the position of the positioning result, and reception intensity information regarding the reception intensity of the GPS radio wave, and ,
An information classification step in which the positioning result information in which the reception intensity information is higher than a predetermined threshold is correct information and the positioning result information in which the reception intensity information is lower than the threshold is provisional error information among the plurality of positioning result information. When,
Information comprising: a correct / incorrect determination step that sets the temporary error information as correct information or error information based on a comparison result of comparing the timing information and position information of the temporary error information with the timing information and position information of the correct information. Processing method. A communication terminal,
An information acquisition unit for acquiring positioning result information including timing information indicating a timing at which the communication terminal executes GPS positioning processing, position information indicating a position of a positioning result, and reception intensity information regarding reception intensity of GPS radio waves;
Among the plurality of positioning result information, an information classifying unit in which the positioning result information whose reception intensity information is higher than a predetermined threshold is correct information and the positioning result information whose reception intensity information is lower than the threshold is temporary error information When,
A communication comprising: a correct / incorrect determination unit that uses the temporary error information as correct information or error information based on a comparison result of comparing the timing information and position information of the temporary error information with the timing information and position information of the correct information. Terminal.   A program for causing a computer to function as the communication terminal according to claim 16.

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