JP5648324B2 - COMMUNICATION SYSTEM, RECEPTION DEVICE, RECEPTION METHOD, AND RECEPTION PROGRAM - Google Patents

Description

  The present invention relates to a communication system, a receiving device, a receiving method, and a receiving program.

  Conventionally, data is transmitted from a transmitting device such as a mobile phone to a receiving device such as a PC (Personal Computer) to back up the data on the transmitting device side (hereinafter referred to as backup processing). . As a method of such backup processing, a method of transmitting only untransmitted data that has not been transmitted to the outside to the receiving device (untransmitted data transmission method) is generally used. It was.

  However, in the untransmitted data transmission method, when the current receiving device is replaced with a new receiving device due to a failure or the like, transmitted data already transmitted from the transmitting device to the current receiving device is transmitted to the new receiving device. This makes backup impossible.

  For this reason, recently, a backup processing method for transmitting transmitted data to a receiving apparatus in addition to untransmitted data has been studied. A list comparison method is known as such a method. In the list comparison method, first, the transmission device acquires a list of data held by the reception device from the reception device. Then, the transmitting device compares the list of data acquired from the receiving device with the list of data held by itself, and verifies the consistency of both lists. Then, the transmitting device searches for inconsistent data in the list, and transmits the searched data to the receiving device. As a result, when the transmitted data already transmitted from the transmitting device to the receiving device corresponds to the inconsistent data in the list, the transmitted data is transmitted from the transmitting device to the receiving device in addition to the untransmitted data. The backup is done reliably.

JP-A-6-104955 JP 2004-302791 A

  However, the above list comparison method has a problem that the processing time required for the backup process increases.

  Specifically, in the above-described list comparison method, the list of data held by the transmission device is compared with the list of data held by the reception device, and the consistency of both lists is verified. At this time, since all the data in both lists are compared one by one, a great amount of time is consumed from the start of processing until the search for inconsistent data in the lists. As a result, in the above list comparison method, the processing time required for the backup process increases.

  The disclosed technique has been made in view of the above, and an object thereof is to provide a communication system, a receiving apparatus, a receiving method, and a receiving program that can reduce the processing time required for backup processing.

  The communication system which this application discloses is a communication system which has a transmitting device and a receiving device in one mode. The transmitting device generates untransmitted data and transmitted data from the held data, and the transmitting unit transmits untransmitted data and transmitted data generated by the generating unit to the receiving device. With. On the other hand, the reception device includes a history storage unit that stores a reception history received from the outside, and a reception unit that receives the untransmitted data and the transmitted data transmitted by the transmission unit. The reception unit transmits an instruction to stop transmission of the transmitted data started by the transmission unit to the transmission device when a reception history exists in the history storage unit.

  According to one aspect of the communication system disclosed in the present application, it is possible to reduce the processing time required for the backup process.

FIG. 1 is a block diagram illustrating the configuration of each device included in the communication system according to the first embodiment. FIG. 2 is a diagram illustrating a system configuration of the communication system according to the second embodiment. FIG. 3 is a diagram illustrating an example of the transmission data storage unit. FIG. 4 is a diagram illustrating an example of the reception history storage unit. FIG. 5 is a flowchart illustrating a processing procedure performed by the mobile terminal device according to the second embodiment. FIG. 6 is a flowchart illustrating the automatic transmission process performed by the mobile terminal device according to the second embodiment. FIG. 7 is a diagram illustrating an example of the processing table. FIG. 8 is a flowchart illustrating a data transmission process performed by the mobile terminal device according to the second embodiment. FIG. 9 is a flowchart illustrating a processing procedure performed by the PC according to the second embodiment. FIG. 10 is a flowchart illustrating the automatic reception process performed by the PC according to the second embodiment. FIG. 11 is a diagram illustrating an example of a processing table. FIG. 12 is a flowchart illustrating data registration processing performed by the PC according to the second embodiment. FIG. 13 is a hardware configuration diagram of the communication system according to the second embodiment.

  Hereinafter, embodiments of a communication system, a receiving apparatus, a receiving method, and a receiving program disclosed in the present application will be described in detail with reference to the drawings. Note that this embodiment does not limit the disclosed technology.

  FIG. 1 is a block diagram illustrating the configuration of each device included in the communication system according to the first embodiment. The communication system 1 shown in FIG. 1 includes a transmission device 3 and a reception device 5 and backs up data on the transmission device 3 side to the reception device 5 side by transmitting data from the transmission device 3 to the reception device 5. .

  The transmission device 3 includes a transmission unit 3a. The transmission unit 3a acquires the retained data according to the order determined in association with the identification information of the data, and sequentially transmits the acquired data to the reception device 5 while dividing the acquired data into packets.

  The receiving device 5 includes a storage unit 5a, a determination unit 5b, and an instruction unit 5c. The storage unit 5a stores data identification information for identifying data received from the outside as a reception history. The determination unit 5 b receives data transmitted from the transmission device 3 in the same order as the transmission device 3. Moreover, the determination part 5b determines whether the identification information of the data corresponding to order is memorize | stored in the memory | storage part 5a, when the first packet of data is received. When the data identification information is stored in the storage unit 5a, the instruction unit 5c instructs the transmission device 3 to stop transmission of packets after the first packet in the data.

  As described above, the communication system 1 according to the present embodiment allows the receiving device 5 that has received a part of the data from the transmitting device 3 to receive the data when the information for identifying the data is held in its own reception history. The transmission apparatus 3 is instructed to stop transmission of the remaining portion of the transmission. For this reason, in the communication system 1 according to the present embodiment, as in the conventional list comparison method, the list of data held by the transmission device 3 and the list of data held by the reception device 5 are compared to match both lists. It is possible to eliminate the need to verify the performance. As a result, in the communication system 1 according to the present embodiment, the processing time required for the backup process can be shortened.

  Next, a communication system according to the second embodiment will be described. FIG. 2 is a diagram illustrating a system configuration of the communication system according to the second embodiment. As illustrated in FIG. 2, the communication system 10 includes a mobile terminal device 30 and a PC 50. Here, it is assumed that the mobile terminal device 30 operates as a transmitting device that transmits its own data, and the PC 50 operates as a receiving device that receives and backs up data from the mobile terminal device 30. To do.

  The mobile terminal device 30 communicates with the PC 50 via the charging cradle 40. The charging cradle 40 is a charging device that mediates charging of the portable terminal device 30 from the PC 50, and includes an infrared communication unit 42. The infrared communication unit 42 includes an infrared communication transmitter / receiver, and based on the control of an infrared communication control unit 53 (described later) of the PC 50, a communication unit that performs infrared transmission / reception with the infrared communication unit 33 (described later) of the mobile terminal device 30. It is.

  Next, details of the configuration of the mobile terminal device 30 and the PC 50 will be described. As illustrated in FIG. 2, the mobile terminal device 30 includes a transmission data storage unit 31, a charge detection unit 32, an infrared communication unit 33, and a data transmission unit 34.

  The transmission data storage unit 31 is a storage unit that stores data such as still images and moving images captured by the imaging function of the mobile terminal device 30. An example of the transmission data storage unit 31 is shown in FIG. As illustrated in FIG. 3, the transmission data storage unit 31 stores data for each storage destination, type, and transmitted / untransmitted classification.

  Here, the storage destination is a place where data is stored, and is represented by “internal memory” and “external memory”. “Internal memory” represents a memory inside the portable terminal device 30 in which data is stored, and “external memory” represents a memory outside the portable terminal device 30 such as an SD (Secure Digital memory) card in which data is stored. .

  The type is a type of data, and is represented by “moving image” and “still image”. “Movie” is data including an extension such as “.mpg” in the data, and “still image” is data including an extension such as “.jpg” in the data.

  The transmitted / untransmitted category is a category indicating whether or not data has been transmitted to the outside, and is represented by “transmitted” and “not transmitted”. “Sent” is a category indicating that the data has already been transmitted to the outside, and “Unsent” indicates unsent data that is not yet transmitted to the outside. It is a division.

  For example, in the example of FIG. 3, the transmission data storage unit 31 stores the moving image data “a1.mpg”, “a2.mpg”, “a3.mpg”, “a4.mpg”,. Remember. For example, the transmission data storage unit 31 stores still image data “h1.jpg”, “h2.jpg”, “h3.jpg”, “h4.jpg”,...

  Returning to FIG. 2, the charging detection unit 32 detects the start of charging by the charging cradle 40 for the mobile terminal device 30. Specifically, the charge detection unit 32 detects that charging of the mobile terminal device 30 is started when a predetermined voltage is supplied to the connection terminal of the mobile terminal device 30. Then, the charge detection unit 32 notifies the data transmission unit 34 of the detection result.

  The infrared communication unit 33 radiates infrared rays toward the infrared communication unit 42 of the charging cradle 40 and establishes communication between the portable terminal device 30 and the PC 50 using the emitted infrared rays.

  The data transmission unit 34, when notified from the charge detection unit 32 of the detection result that the charging from the charging cradle 40 to the mobile terminal device 30 is started, to the PC 50 of the data stored in the transmission data storage unit 31. Start sending. The processing performed by the infrared communication unit 33 and the data transmission unit 34 described above will be described in detail later.

  As shown in FIG. 2, the PC 50 includes a reception data storage unit 51, a reception history storage unit 52, an infrared communication unit 53, a reception determination unit 54, and a transmission instruction unit 55.

  The received data storage unit 51 is a storage unit that stores data such as still images and moving images received by the PC 50 from the outside. The received data storage unit 51 has the same data structure as that of the transmission data storage unit 31 of the mobile terminal device 30 and therefore will not be described here.

  The reception history storage unit 52 is a storage unit that stores data identification information for identifying data received from the outside by the PC 50 as a reception history. In this embodiment, the data identification information is a data type and a data storage destination. An example of the reception history storage unit 52 is shown in FIG. As illustrated in FIG. 4, the reception history storage unit 52 includes items such as “No.”, “type”, “storage destination”, and “registration date”. “No.” indicates the order in which data is received.

  “Type” is a type of data, and is represented by “moving image” and “still image”. “Movie” is data including an extension such as “.mpg” in the data, and “still image” is data including an extension such as “.jpg” in the data.

  The “storage destination” is a place where data is stored, and is represented by “internal memory” and “external memory”. “Internal memory” represents a memory inside the mobile terminal device 30 in which data is stored, and “external memory” represents a memory outside the mobile terminal device 30 such as an SD card in which data is stored. The “registration date” is the date when the PC 50 receives the data and stores it in the received data storage unit 51.

  For example, the first line in FIG. 4 indicates that the moving image data stored in the internal memory of the mobile terminal device 30 was received by the PC 50 on May 10, 2005. The fourth line in FIG. 4 indicates that still image data stored in the external memory of the mobile terminal device 30 was received by the PC 50 on May 10, 2005.

  Returning to FIG. 2, the infrared communication control unit 53 is connected to the infrared communication unit 42 of the charging cradle 40 via a predetermined cable, and is interposed between the PC 50 and the portable terminal device 30 by the mediation by the infrared communication unit 42. Establish communication.

  The reception determination unit 54 sequentially receives data transmitted from the mobile terminal device 30. In addition, when receiving the first packet of data, the reception determination unit 54 determines whether the type and storage location of the received data are stored as a reception history in the reception history storage unit 52. The reception determination unit 54 notifies the transmission instruction unit 55 of the determination result.

  The transmission instruction unit 55 stops the transmission of packets after the first packet when the reception determination unit 54 receives a determination result indicating that the type and storage location of the received data are stored in the reception history storage unit 52. The mobile terminal device 30 is instructed to do so. The processing performed by the infrared communication unit 53, the reception determination unit 54, and the transmission instruction unit 55 described above will be described in detail later.

  Next, a hardware configuration example of the communication system 10 illustrated in FIG. 2 will be described with reference to FIG. FIG. 13 is a hardware configuration diagram of the communication system 10 according to the second embodiment. As illustrated in FIG. 13, the communication system 10 includes a mobile terminal device 300 and a PC 500. The mobile terminal device 300 communicates with the PC 500 via the charging cradle 400.

  The mobile terminal device 300 includes a wireless communication unit 301, a display unit 302, a voice input / output unit 303, an infrared communication unit 304, a connection terminal 305, a charge control unit 306, a secondary battery 307, a processor 308, And a storage unit 309.

  The wireless communication unit 301, the display unit 302, the voice input / output unit 303, the infrared communication unit 304, and the connection terminal 305 are connected to the processor 308. The charging control unit 306 is connected to the connection terminal 305. The secondary battery 307 is connected to the charge control unit 306. The infrared communication unit 304 corresponds to, for example, the infrared communication unit 33 illustrated in FIG.

  The processor 308 and the storage unit 309 implement the functions of the transmission data storage unit 31, the charge detection unit 32, and the data transmission unit 34 illustrated in FIG. Specifically, the program storage unit 309a of the storage unit 309 stores various programs that realize processing by the charge detection unit 32 and the data transmission unit 34 illustrated in FIG. The data storage unit 309b and the RAM 309c store the transmission data storage unit 31 illustrated in FIG. Then, the processor 308 reads out various programs stored in the program storage unit 309a, develops the programs in, for example, the RAM 309c and the like, and sequentially executes them to realize various functions of the charge detection unit 32 and the data transmission unit 34.

  On the other hand, the PC 500 includes a USB (Universal Serial Bus) 501, a power supply control unit 502, a processor 503, an HDD 504, and a RAM 505.

  The USB 501 and the power supply control unit 502 are connected to the processor 503. The USB 501 is connected to the infrared communication unit 401 of the charging cradle 400 via a USB cable. The power supply control unit 502 is connected to the charging cradle 400 via an electric wire, and supplies power to the connection terminal 305 of the mobile terminal device 300 via the charging cradle 400.

  The processor 503, the HDD 504, and the RAM 505 realize the functions of the reception data storage unit 51, the reception history storage unit 52, the infrared communication control unit 53, the reception determination unit 54, and the transmission instruction unit 55 shown in FIG. Specifically, the HDD 504 stores various programs for realizing processing by the infrared communication control unit 53, the reception determination unit 54, and the transmission instruction unit 55 shown in FIG. Further, the HDD 504 stores the reception data storage unit 51 and the reception history storage unit 52 illustrated in FIG. Then, the processor 503 reads out various programs stored in the HDD 504, expands them in, for example, the RAM 505, and executes them sequentially, thereby executing various functions of the infrared communication control unit 53, the reception determination unit 54, and the transmission instruction unit 55. Realize.

  The charging cradle 400 includes an infrared communication unit 401. The infrared communication unit 401 includes a transmission / reception unit for infrared communication, and performs infrared transmission / reception based on the control of the infrared communication control unit 502 executed by the processor 503 of the PC 500.

  Under such a configuration, when the mobile terminal device 300 is placed on the charging cradle 400, the power supply control unit 502 and the connection terminal 305 of the PC 500 are electrically connected, and the charging control unit 306 charges the secondary battery 307. Be started. In addition, the charge detection unit 32 executed by the processor 308 detects that the charge cradle 400 is connected to the connection terminal 305, and the data transmission unit 34 starts data transmission.

  Next, processing procedures by the mobile terminal device 30 and the PC 50 will be described. First, a processing procedure performed by the mobile terminal device 30 will be described. FIG. 5 is a flowchart illustrating a processing procedure performed by the mobile terminal device 30 according to the second embodiment.

  As shown in FIG. 5, in the mobile terminal device 30, the charging detection unit 32 waits until it detects the start of charging by the charging cradle 40 with respect to the mobile terminal device 30 (No in step S11). When the charging detection unit 32 detects the start of charging by the charging cradle 40 for the mobile terminal device 30 (Yes at Step S11), the data transmission unit 34 determines whether or not the automatic transmission process is being executed (Step S12). ).

  If the automatic transmission process is being executed (Yes at Step S12), the data transmission unit 34 returns the process to Step S11. On the other hand, if the automatic transmission process is not executed (No at Step S12), the data transmission unit 34 executes an automatic transmission process for transmitting data to the PC 50 in order to back up the data to the PC 50 (Step S13). Thereafter, the portable terminal device 30 returns the process to step S11 if the power is on (No in step S14), and ends the process if the power is off (Yes in step S14).

  FIG. 6 is a flowchart illustrating an automatic transmission process performed by the mobile terminal device 30 according to the second embodiment. FIG. 6 corresponds to step S13 in FIG. As shown in FIG. 6, the data transmission unit 34 causes the infrared communication unit 33 to send out a CONNECT signal based on the OBEX (OBject EXchange) protocol as a connection request for requesting a connection with the PC 50 (step S21). The CONNECT signal sent out by the infrared communication unit 33 is transmitted to the infrared communication unit 53 of the PC 50 via the infrared communication unit 42 of the charging cradle 40, and the infrared communication unit 53 establishes a connection between the portable terminal device 30 and the PC 50. Establish.

  When the connection between the mobile terminal device 30 and the PC 50 is established (Yes at Step S22), the data transmission unit 34 initializes the processing result of the processing table used for data transmission, and sets the processing number of the processing table to “1”. (Step S23). Here, the processing table will be described with reference to FIG. FIG. 7 is a diagram illustrating an example of the processing table.

  As illustrated in FIG. 7, the processing table includes items such as a processing number, a storage destination, a type, a transmitted / untransmitted category, and a processing result. The process number indicates the order of data transmission. In this embodiment, the process numbers are serial numbers from 1 to 8.

  The storage destination is a place where data is stored, and is represented by “internal memory” and “external memory”. “Internal memory” represents a memory inside the mobile terminal device 30 in which data is stored, and “external memory” represents a memory outside the mobile terminal device 30 such as an SD card in which data is stored.

  The type is a type of data, and is represented by “moving image” and “still image”. “Movie” is data including an extension such as “.mpg” in the data, and “still image” is data including an extension such as “.jpg” in the data.

  The transmitted / untransmitted category is a category indicating whether or not data has been transmitted to the outside, and is represented by “transmitted” and “not transmitted”. “Transmitted” is a classification indicating that the data has already been transmitted to the outside by the mobile terminal device 30, and “Not transmitted” is data that the mobile terminal device 30 has not yet transmitted to the outside. This is a classification indicating that it is untransmitted data. The processing result indicates a processing result indicating whether or not the data transmission processing performed in the order of the processing numbers is normally performed. The storage destination, type, and transmitted / untransmitted classification are examples of identification information for identifying data.

  For example, the first line in the example of FIG. 7 indicates that untransmitted moving image data stored in the internal memory of the mobile terminal device 30 is first transmitted to the PC 50. The second line in the example of FIG. 7 indicates that the transmitted moving image data stored in the internal memory of the mobile terminal device 30 is transmitted to the PC 50 second. The third line in the example of FIG. 7 indicates that untransmitted still image data stored in the internal memory of the mobile terminal device 30 is transmitted to the PC 50 third. The fourth line in the example of FIG. 7 indicates that the transmitted still image data stored in the internal memory of the mobile terminal device 30 is transmitted to the PC 50 fourth. The fifth line in the example of FIG. 7 indicates that untransmitted moving image data stored in the external memory of the mobile terminal device 30 is transmitted to the PC 50 fifth. The sixth line in the example of FIG. 7 indicates that the transmitted moving image data stored in the external memory of the mobile terminal device 30 is transmitted to the PC 50 sixth. The seventh line in the example of FIG. 7 indicates that untransmitted still image data stored in the external memory of the mobile terminal device 30 is transmitted to the PC 50 seventh. The eighth line in the example of FIG. 7 indicates that the transmitted still image data stored in the external memory of the mobile terminal device 30 is transmitted to the PC 50 eighth.

  Returning to FIG. 6, the data transmission unit 34 acquires a data group corresponding to the storage destination, type, and transmitted / untransmitted classification of the current process number from the transmission data storage unit 31 (step S24). For example, when the current processing number is “1”, the data transmission unit 34 transmits the untransmitted moving image data groups “b1.mpg”, “b2.mpg”, “b3.mpg” stored in the internal memory. , “B4.mpg”,... Are acquired from the transmission data storage unit 31.

  Then, the data transmission unit 34, if the data group corresponding to the storage destination, type, and transmitted / untransmitted classification of the current processing number does not exist in the transmission data storage unit 31 (No in step S25), the size 0 Empty data such as a Tar file is transmitted to the PC 50 (step S26). Thereafter, the data transmitting unit 34 advances the process to step S31. The reason for transmitting the empty data is to prevent the processing numbers in the processing table from shifting.

  On the other hand, when the data transmission unit 34 acquires from the transmission data storage unit 31 a data group corresponding to the storage destination, type, and transmitted / untransmitted classification of the current process number (Yes in step S25), Is extracted (step S27). Then, the data transmission unit 34 performs a data transmission process for transmitting the extracted data to the PC 50 (step S28). Details of the data transmission process will be described later.

  If the processing result of the data transmission process is “transmission stop” or “transmission abnormality” to be described later (Yes at step S29), the data transmission unit 34 stops data transmission and advances the process to step S31. . On the other hand, if the processing result of the data transmission process is “transmission normal” described later (No at Step S29), the data transmission unit 34 determines whether all data in the data group acquired at Step S24 has been extracted. (Step S30). If all the data has not been extracted (No at Step S30), the data transmitting unit 34 returns the process to Step S27. On the other hand, when all the data is extracted (Yes at Step S30), the data transmission unit 34 records the processing result of the data transmission process in the processing table (Step S31). For example, if the processing result of the data transmission process is “transmission normal”, the data transmission unit 34 records “transmission normal” in the processing result of the processing table.

  Subsequently, the data transmission unit 34 determines whether or not the current process number is the final “8” (step S32). If the current process number is not the final “8” (No in step S32). ), Increment the process number (step S33), and return the process to step S24. On the other hand, when the current processing number is “8” at the end (Yes at Step S32), the data transmission unit 34 transmits a DISCONNECT signal based on the OBEX protocol as an infrared ray as a disconnection request for disconnecting communication with the PC 50. The data is sent to the communication unit 33 (step S34). The DISCONNECT signal transmitted by the infrared communication unit 33 is transmitted to the infrared communication unit 53 of the PC 50 via the infrared communication unit 42 of the charging cradle 40, and the infrared communication unit 53 performs communication between the portable terminal device 30 and the PC 50. Disconnect.

  Subsequently, the data transmission unit 34 updates the transmitted / untransmitted classification of the transmission data storage unit 31 and ends the process (step S35). Specifically, the data transmission unit 34 moves the data in which the transmitted / untransmitted classification corresponding to the process number indicating “normal transmission” in the processing table is “untransmitted” to “transmitted”. As a result, the transmitted / untransmitted section of the transmission data storage unit 31 is updated.

  FIG. 8 is a flowchart illustrating the data transmission process performed by the mobile terminal device 30 according to the second embodiment. FIG. 8 corresponds to step S28 in FIG. As shown in FIG. 8, the data transmission unit 34 converts the data into the tar format, and transmits one packet of the converted data to the PC 50 (step S41).

  Subsequently, the data transmission unit 34 determines whether or not a “transmission continuation instruction” is received from the PC 50 (step S42). When receiving the “transmission continuation instruction” from the PC 50 (Yes at Step S42), the data transmission unit 34 determines whether or not all data packets have been transmitted to the PC 50 (Step S43). If the data transmission unit 34 has not transmitted all packets of data to the PC 50 (No at step S43), the process returns to step S41. On the other hand, when all the data packets are transmitted to the PC 50 (Yes at Step S43), the data transmission unit 34 returns “transmission normal” indicating that the data transmission has been normally completed as a processing result (Step S43). S44), the process is terminated.

  On the other hand, when the data transmission unit 34 has not received the “transmission continuation instruction” from the PC 50 (No at Step S42), the data transmission unit 34 determines whether or not the “transmission stop instruction” has been received from the PC 50 (Step S45). When the data transmission unit 34 receives the “transmission stop instruction” from the PC 50 (Yes at step S45), the data transmission unit 34 stops the data transmission and returns “transmission stop” indicating that as a processing result (step S45). S46), the process ends.

  On the other hand, when the data transmission unit 34 does not receive the “transmission stop instruction” from the PC 50 (No at Step S45), the “transmission abnormality” indicating that the data transmission could not be normally completed due to a communication abnormality or the like. Is returned as a processing result (step S47), and the processing is terminated.

  Next, the processing procedure by the PC 50 will be described. FIG. 9 is a flowchart illustrating a processing procedure performed by the PC 50 according to the second embodiment. As illustrated in FIG. 9, the infrared communication unit 53 determines whether a CONNECT signal based on the OBEX protocol is received as a connection request from the mobile terminal device 30 (step S <b> 51). When receiving the CONNECT signal (Yes at Step S51), the infrared communication unit 53 executes a connection process between the mobile terminal device 30 and the PC 50 (Step S52). And the infrared communication part 53 returns a process to step S51, when the connection of the portable terminal device 30 and PC50 cannot be established (step S53 negative). On the other hand, when the connection between the mobile terminal device 30 and the PC 50 can be established (Yes at Step S53), the reception determination unit 54 and the transmission instruction unit 55 perform automatic reception processing for receiving data from the mobile terminal device 30. Execute (Step S54). Details of the automatic reception process will be described later.

  On the other hand, if the infrared communication unit 53 has not received the CONNECT signal (No at Step S51), the infrared communication unit 53 determines whether a DISCONNECT signal based on the OBEX protocol has been received as a disconnection request from the mobile terminal device 30 ( Step S55). When the infrared communication unit 53 receives the DISCONNECT signal (Yes at Step S55), the infrared communication unit 53 executes a disconnection process for disconnecting communication with the PC 50 (Step S56). Then, the reception determination unit 54 executes a data registration process for registering data received by the automatic reception process (step S57). Details of the data registration process will be described later. On the other hand, if the infrared communication unit 53 has not received the DISCONNECT signal (No at Step S55), the infrared communication unit 53 returns the process to Step S51.

  Then, after finishing the process of step S54 or step S57, the PC 50 returns the process to step S51 if the power is on (No in step S58), and performs the process if the power is off (Yes in step S58). finish.

  FIG. 10 is a flowchart illustrating the automatic reception process performed by the PC 50 according to the second embodiment. FIG. 10 corresponds to step S54 in FIG. As shown in FIG. 10, when the process is started, the PC 50 displays a reception status screen indicating the reception status of data from the mobile terminal device 30 on a display device such as a display (step S61). Then, the reception determination unit 54 initializes the processing result of the processing table used for data reception, and sets the processing number of the processing table to “1” (step S62). Here, the processing table will be described with reference to FIG. FIG. 11 is a diagram illustrating an example of a processing table. The processing table of FIG. 11 used by the reception determination unit 54 is basically the same as the data configuration of FIG.

  As illustrated in FIG. 11, the processing table includes items such as a processing number, a storage destination, a type, a transmitted / untransmitted category, and a processing result. The process number indicates the order in which data is received. In this embodiment, the process numbers are serial numbers from 1 to 8, which are the same serial numbers as the process numbers in FIG.

  The storage destination is a place where data is stored, and is represented by “internal memory” and “external memory”. “Internal memory” represents a memory inside the mobile terminal device 30 in which data is stored, and “external memory” represents a memory outside the mobile terminal device 30 such as an SD card in which data is stored.

  The type is a type of data, and is represented by “moving image” and “still image”. “Movie” is data including an extension such as “.mpg” in the data, and “still image” is data including an extension such as “.jpg” in the data.

  The transmitted / untransmitted category is a category indicating whether or not data has been transmitted to the outside, and is represented by “transmitted” and “not transmitted”. “Transmitted” is a classification indicating that the data has already been transmitted to the outside by the mobile terminal device 30, and “Not transmitted” is data that the mobile terminal device 30 has not yet transmitted to the outside. This is a classification indicating that it is untransmitted data. The processing result indicates a processing result indicating whether or not the data reception processing performed in the order of the processing numbers is normally performed. The storage destination, type, and transmitted / untransmitted classification are examples of identification information for identifying data.

  For example, the first line in the example of FIG. 11 indicates that the untransmitted moving image data stored in the internal memory of the mobile terminal device 30 is first received by the PC 50. The second line in the example of FIG. 11 indicates that the transmitted video data stored in the internal memory of the mobile terminal device 30 is received by the PC 50 second. The third line in the example of FIG. 11 indicates that the untransmitted still image data stored in the internal memory of the mobile terminal device 30 is received by the PC 50 third. The fourth line in the example of FIG. 7 indicates that the transmitted still image data stored in the internal memory of the mobile terminal device 30 is received by the PC 50 fourth. Further, the fifth line in the example of FIG. 11 indicates that the untransmitted moving image data stored in the external memory of the mobile terminal device 30 is received by the PC 50 fifth. In addition, the sixth line in the example of FIG. 11 indicates that the transmitted video data stored in the external memory of the mobile terminal device 30 is received by the PC 50 sixth. The seventh line in the example of FIG. 11 indicates that the untransmitted still image data stored in the external memory of the mobile terminal device 30 is received by the PC 50 seventh. The eighth line in the example of FIG. 11 indicates that the transmitted still image data stored in the external memory of the mobile terminal device 30 is received by the PC 50 eighth.

  Returning to FIG. 10, the reception determination unit 54 receives one packet of data transmitted from the mobile terminal device 30 (step S63). Then, the reception determining unit 54 determines whether the transmitted / untransmitted category of the current process number is “not transmitted” (step S64). The reception determination unit 54 stores the received data (for one packet) in the temporary storage area when the transmitted / untransmitted category of the current process number is “not transmitted” (Yes in step S64) ( Step S65). Subsequently, the transmission instruction unit 55 transmits to the portable terminal device 30 a transmission continuation instruction instructing to continue transmission for the next packet of the received data (for one packet) (step S66). Subsequently, the reception determination unit 54 determines whether or not all packets of the data received in step S63 have been received (step S67). If the reception determination unit 54 has not received all the data packets (No at Step S67), the process returns to Step S63. On the other hand, if the reception determination unit 54 has received all packets of data (Yes at step S67), the process proceeds to step S71.

  On the other hand, if the transmitted / untransmitted category of the current process number is “transmitted” (No at step S64), the reception determination unit 54 determines the reception history of the data received at step S63. A determination process is executed (step S68). Specifically, the reception determination unit 54 determines whether the storage destination and type of the current process number are stored in the reception history storage unit 52. For example, the reception determination unit 54 matches the combination of the storage destination “internal memory” and the type “moving image” of the current process number “2” with the combination of the type and storage destination of the reception history storage unit 52 illustrated in FIG. It is determined whether or not. If the combination of both storage destinations and types match, the reception determination unit 54 determines that “there is a reception history”. On the other hand, if the combination of both storage destinations and types does not match, the reception determination unit 54 determines that “no reception history”.

  If the reception determination process determines that there is no reception history (No in step S69), the reception determination unit 54 stores the received data (one packet) in the temporary storage area (step S65), and transmits it. A continuation instruction is transmitted to the mobile terminal device 30 (step S66). Thereafter, the processes in steps S63, S64, S68, S69, and S65 to S67 are repeated until all packets of data are received, and the process proceeds to step S71.

  On the other hand, if the reception determination unit 54 determines that “there is a reception history” by the reception determination process (Yes in step S69), the reception determination unit 54 instructs to stop transmission of packets after the received data (first one packet). A transmission stop instruction to be transmitted is transmitted to the mobile terminal device 30 as a response signal to the reception signal related to the reception (step S70).

  And the reception determination part 54 records a process result in a process table, after complete | finishing the process of step S67 or step S70 (step S71). That is, when the process of step S67 is completed, the reception determination unit 54 records “reception normal” indicating that the reception of data has been normally completed in the process table as a process result. On the other hand, when the process of step S70 is completed, the reception determination unit 54 records “reception stop” indicating that the reception of data has been stopped midway as a process result in the process table.

  And the reception determination part 54 displays the reception status screen showing the reception status of the data from the portable terminal device 30 on display devices, such as a display (step S72). For example, when one process corresponding to the process number in the process table is completed, the reception determination unit 54 displays a mode in which the progress bar is advanced by 1/8 on the display device.

  Subsequently, the reception determination unit 54 determines whether or not the current processing number is the final “8” (step S73). If the current processing number is not the final “8” (No in step S73). ) The process number is incremented (step S74), and the process returns to step S63. On the other hand, if the current process number is the final “8” (Yes at step S73), the reception determination unit 54 ends the process.

  FIG. 12 is a flowchart illustrating data registration processing performed by the PC 50 according to the second embodiment. FIG. 12 corresponds to step S57 in FIG. As illustrated in FIG. 12, the reception determination unit 54 sets the process number in the process table to “1” (step S81). Then, the reception determination unit 54 determines whether or not the processing result of the current processing number is “reception normal” (step S82). If the process result of the current process number is not “reception normal” (No at step S82), the reception determination unit 54 advances the process to step S85.

  On the other hand, when the process result of the current process number is “reception normal” (Yes at Step S82), the reception determination unit 54 reproduces data from the tar format packet stored in the temporary storage area (Step S83). ). The reception determination unit 54 stores the reproduced data in the reception data storage unit 51. Then, the reception determination unit 54 additionally registers the type and storage destination of the current process number in the reception history storage unit 52 as the type and storage destination of the reproduced data (step S84). Then, the reception determination unit 54 deletes the data in the temporary storage area (step S85).

  Subsequently, the reception determination unit 54 determines whether or not the current process number is the final “8” (step S86). If the current process number is not the final “8” (No in step S86). ) The process number is incremented (step S87), and the process returns to step S82. On the other hand, if the current process number is the final “8” (Yes at step S86), the reception determination unit 54 ends the process.

  As described above, in the second embodiment, in the mobile terminal device 30, the data transmission unit 34 transmits the stored data according to the order determined in association with the type and storage destination of the data. Get from. Then, the data transmission unit 34 sequentially transmits the acquired data to the PC 50 while dividing it into packets. In the PC 50, the reception determination unit 54 sequentially receives data sequentially transmitted from the mobile terminal device 30 in the same order as the data transmission unit 34. At this time, when the reception determination unit 54 receives the first packet of data, the reception history storage unit 52 stores the type and storage location of the data received from the outside as the data type and storage location corresponding to the order. It is determined whether or not it is stored. Then, when the data type and storage destination are stored in the reception history storage unit 52, the transmission instruction unit 55 responds with a transmission stop instruction instructing to stop transmission of packets after the first packet in the data. It transmits to the portable terminal device 30 as a signal.

  Therefore, according to the second embodiment, as in the conventional list comparison method, the consistency between both lists is verified by comparing the list of data held by the mobile terminal device 30 with the list of data held by the PC 50. Can be eliminated. As a result, according to the second embodiment, the processing time required for the backup process can be shortened.

  In the second embodiment, the transmission instructing unit 55 instructs to continue transmission of packets after the first packet in the data when the data type and the storage destination are not stored in the reception history storage unit 52. The transmission continuation instruction to be transmitted is transmitted to the portable terminal device 30 as a response signal.

  Therefore, according to the second embodiment, even when the PC 50 is replaced due to a failure or the like and the reception history of the replaced PC 50 is lost, the replaced PC 50 can be replaced without performing any special processing. The transmitted data already transmitted to the previous PC 50 can be received again from the portable terminal device 30.

  In the second embodiment, the charge detection unit 32 detects the start of charging by the charging cradle 40 for the mobile terminal device 30. Then, when the charging detector 32 detects the start of charging, the data transmitter 34 starts transmitting a packet.

Therefore, according to the second embodiment, the backup process can be automatically started without receiving an instruction for the backup process from the user of the mobile terminal device 30. In the second embodiment, the transmission of the packet is started in response to the start of charging. However, the transmission of the packet may be started by detecting that the mobile terminal device 30 is placed in the charging cradle.
In the second embodiment, a transmission stop instruction or a transmission continuation instruction from the PC 50 is transmitted to the mobile terminal device 30 as a response signal. That is, these instruction contents can be set as parameters of a response signal for the received signal. Therefore, since conventional packet transmission / reception processing can be used as it is, there is no need to separately perform transmission for a transmission stop instruction or a transmission continuation instruction.

  In the communication system described in the above embodiment, the mobile terminal device 30 and the PC 50 can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. In that case, the program can be distributed via a network such as the Internet. The program can also be executed by being recorded on a computer-readable recording medium such as a hard disk, a flexible disk (FD), a CD-ROM, an MO, and a DVD, and being read from the recording medium by the computer.

DESCRIPTION OF SYMBOLS 1 Communication system 3 Transmission apparatus 3a Transmission part 5 Reception apparatus 5a Storage part 5c Instruction part 5b Determination part 10 Communication system 30 Portable terminal device 31 Transmission data storage part 32 Charge detection part 33 Infrared communication part 34 Data transmission part 40 Charging cradle 41 Charging Unit 42 Infrared communication unit 50 PC
51 reception data storage unit 52 reception history storage unit 53 infrared communication control unit 54 reception determination unit 55 transmission instruction unit

Claims (7)

A communication system having a transmitter and a receiver,
The transmitter is
A generating unit that generates untransmitted data and transmitted data from the held data;
The untransmitted data and the transmitted data generated by the generating unit are divided into a plurality of packets according to a predetermined order in association with the untransmitted data and the identification information of the transmitted data, and the reception A transmission unit for transmitting to the device,
The receiving device is:
A history storage unit for storing a reception history received from the outside;
A receiver that receives the untransmitted data and the transmitted data that have been divided into the plurality of packets transmitted by the transmitter;
The reception unit, when a reception history exists in the history storage unit at the time of reception of the first packet of the transmitted data , among the plurality of packets, the transmission data after the first packet in the transmission data A communication system, wherein an instruction to stop transmission of packets corresponding to a predetermined order is transmitted to the transmission device. When the reception history exists in the history storage unit, the reception unit transmits an instruction to stop transmission of the transmitted data as a reception response of the packet of the transmitted data transmitted by the transmission unit. The communication system according to claim 1. The communication system according to claim 1, wherein the reception unit determines whether the data transmitted from the transmission unit is untransmitted data or transmitted data based on the predetermined order. A receiving device that communicates with a transmitting device,
A history storage unit for storing a reception history received from the outside;
A receiving unit for receiving untransmitted data and transmitted data transmitted by the transmitting device;
The receiving unit divides the untransmitted data and the transmitted data into a plurality of packets according to a predetermined order that is associated with the untransmitted data and the identification information of the transmitted data. And when there is a reception history in the history storage unit at the time of reception of the first packet of the transmitted data , among the plurality of packets, the transmission completed A receiving apparatus, wherein an instruction to stop transmission of packets corresponding to the predetermined order after the first packet in data is transmitted to the transmitting apparatus.   When there is a reception history in the history storage unit, the reception unit transmits an instruction to stop transmission of the transmitted data as a reception response of the packet of transmitted data transmitted by the transmission device. The receiving apparatus according to claim 4. A receiving method applied to a receiving device that communicates with a transmitting device,
A history storage step of storing the reception history received from the outside in the history storage unit;
Receiving the untransmitted data and the transmitted data transmitted by the transmitting device,
In the receiving step, the transmitting device divides the untransmitted data and the transmitted data into a plurality of packets according to a predetermined order that is associated with the untransmitted data and the identification information of the transmitted data. And when there is a reception history in the history storage unit at the time of reception of the first packet of the transmitted data , among the plurality of packets, the transmission completed A receiving method, comprising: transmitting an instruction to stop transmitting packets corresponding to the predetermined order after the first packet in data to the transmitting device. A communication program executed in a receiving device that communicates with a transmitting device,
In the receiving device,
History storage procedure for storing the reception history received from the outside in the history storage unit;
A reception procedure for receiving untransmitted data and transmitted data transmitted by the transmitting device;
In the reception procedure, the transmission apparatus divides the untransmitted data and the transmitted data into a plurality of packets according to a predetermined order that is associated with identification information of the untransmitted data and the transmitted data. And when there is a reception history in the history storage unit at the time of reception of the first packet of the transmitted data , among the plurality of packets, the transmission completed A receiving program that transmits an instruction to stop transmission of packets corresponding to the predetermined order after the first packet in data to the transmitting device.

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