JP5486384B2 - Data transmitting apparatus, data receiving apparatus, and control method and program thereof - Google Patents

Description

  The present invention relates to a technique for transmitting and receiving data by proximity wireless communication.

  2. Description of the Related Art There is a known technique for transmitting and receiving data recorded inside between information devices such as digital cameras and printers by wireless communication. In recent years, there is proximity wireless communication using NFC (Near Field Communication) technology represented by communication using an IC tag incorporated in a mobile phone or the like, and a user moves information devices close to each other within a certain distance. Data transmission / reception is possible. As a communication protocol for such close proximity wireless communication, a “neighbor type” communication distance of about 70 cm or less and a “proximity type” non-contact communication protocol of about 10 cm or less are known.

  Japanese Patent Application Laid-Open No. 2004-133867 discloses a technique for sending and receiving data by proximity wireless communication by incorporating an IC tag reader / writer into an advertising medium and bringing a mobile phone close to the advertising medium.

JP 2006-31531 A

  However, in near field communication, there is a case where the user notices that erroneous data has been transmitted and interrupts the data transfer by disconnecting the near field communication. In such a case, in order to delete the data transmitted by mistake and recorded in the recording device, it is necessary to browse the recording device directly to find and delete the desired data.

  The present invention has been made in view of the above-described problems, and when data transfer of close proximity wireless communication is interrupted, the data set to be excluded from the transmission target is transmitted using the close proximity wireless communication from the device. The purpose is to delete with simple user operation.

  In order to achieve the above object, a data transmission apparatus of the present invention comprises the following arrangement.

A data transmission device that establishes a connection with a data reception device and transmits data, and manages data to be transmitted among data recorded on a recording medium connected to the data transmission device Means, transmission means for transmitting data to be transmitted in the transmission process, determination means for determining whether an event for interrupting the transmission process has occurred during transmission of the data to be transmitted by the transmission means, and transmission by the determination means When it is determined that an event that interrupts the process has occurred, a selection unit that selects data to be excluded from the transmission target among the data to be transmitted based on a user operation, and transmission interrupted by the event that interrupts the transmission process Resuming means for resuming the processing, and the sending means receives the data selected by the selecting means when the sending processing is resumed by the resuming means. Among these, the notification for deleting the data already transmitted before the interruption from the data receiving device and the data not transmitted to the data receiving device among the data not transmitted to the data receiving device before the interruption are received. It transmits to an apparatus, It is characterized by the above-mentioned.

  With such a configuration, according to the present invention, when data transfer of close proximity wireless communication is interrupted, it is possible to delete data set as an object not to be transmitted from the transferred device using close proximity wireless communication. is there.

The figure which showed the system configuration | structure which concerns on this embodiment. The figure which showed the function structure of the digital camera of this embodiment. The figure which showed the function structure of the data station of this embodiment. 5 is a flowchart of camera-side proximity wireless communication processing according to the first embodiment. 3 is a flowchart of station-side proximity wireless communication processing according to the first embodiment. 10 is a flowchart of camera-side proximity wireless communication processing according to the second embodiment. 9 is a flowchart of station-side proximity wireless communication processing according to the second embodiment. The figure which showed the example of GUI which selects the non-transmission object data.

(Embodiment 1)
Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings. In the following embodiment, an example in which the present invention is applied to a digital camera capable of transmitting and receiving data by proximity wireless communication, as an example of a data transmission apparatus, will be described. An example in which the present invention is applied to a data station that can transmit and receive data by proximity wireless communication and can record received data on a connected recording medium will be described as an example of a data receiving apparatus. However, the present invention can be applied to any device that can transmit and receive data by proximity wireless communication.

  FIG. 1 is a diagram showing an overall configuration when performing data transmission / reception in close proximity wireless communication according to an embodiment of the present invention.

  The digital camera 100 has an antenna for close proximity wireless communication on the bottom surface, and is close to the antenna for close proximity wireless communication (proximity communication unit 204) on the top surface of the data station 200, thereby transmitting and receiving data by close proximity wireless communication. Can be done. The proximity wireless communication described in the present embodiment is a wireless communication system based on a communication protocol defined on the assumption that the communication distance is less than several tens of centimeters, particularly less than several centimeters.

  FIG. 2 is a block diagram showing a functional configuration of the digital camera 100 according to the embodiment of the present invention. The configuration of the digital camera 100 shown in FIG. 2 is an example, and the implementation of the present invention is not limited to the following configuration.

  The camera control unit 101 is a CPU, for example, and reads out an operation program of each block of the digital camera 100 stored in the camera ROM 102 and develops and executes the operation program on the camera RAM 107, thereby performing the operation of each block of the digital camera 100. Control. The camera ROM 102 is a rewritable nonvolatile memory, and stores operation parameters of each block, GUI data to be displayed on a camera display unit 105 described later, and the like in addition to the operation program of each block of the digital front 100. . The camera recording medium 103 is a recording device such as a built-in memory inside the digital camera 100, a memory card or an HDD detachably connected to the digital camera 100, and can store data such as image data and moving image data. It is.

  The camera proximity communication unit 104 is an interface for proximity wireless communication, and includes an antenna and a data conversion unit compliant with the proximity wireless communication standard. The camera proximity communication unit 104 can detect the connection and disconnection of the proximity wireless communication, and notifies the camera control unit 101 of the communication state in accordance with the state change of the proximity wireless communication.

  The camera display unit 105 is a display device such as a small LCD or an organic EL display, and displays image data recorded on a recording medium, GUI data stored in the camera ROM 102, and the like. The camera operation unit 106 is an input interface that receives an instruction from a user such as a power button or a release button, and transmits the content of the input instruction to the camera control unit 101.

FIG. 3 is a block diagram showing a functional configuration of the data station 200 according to the embodiment of the present invention.
The control unit 201 is, for example, a CPU, and controls the operation of each block of the data station 200 by reading the operation program of each block of the data station 200 stored in the ROM 202 and developing the program in the RAM 206. Note that the RAM 206 is a rewritable volatile memory, and is used as a work area during program execution and a temporary storage area for data received by close proximity wireless communication. The ROM 202 is a rewritable nonvolatile memory, and stores operation parameters for each block of the data station 200, sound source data to be reproduced by an audio output unit 205 described later, and the like.

  The near field communication unit 204 is an interface for near field wireless communication, and includes an antenna and a data conversion unit compliant with the near field communication standard. The close proximity communication unit 204 can detect connection and disconnection of close proximity wireless communication, and notifies the control unit 201 of a communication state according to a change in the state of close proximity wireless communication. Data received by the near field communication unit 204 is once stored in the RAM 206 and then recorded on the recording medium 203. The recording medium 203 is, for example, a recording device such as a built-in memory included in the data station 200 or a memory card or HDD that is detachably connected to the data station 200 by wire or wirelessly. Can be stored. The voice output unit 205 outputs a sound source for notifying the user of the state of the proximity wireless communication according to the state change of the proximity wireless communication.

(Camera-side proximity wireless communication processing)
The camera-side proximity wireless communication processing of the digital camera 100 of the present embodiment having such a configuration will be further described with reference to the flowchart of FIG. Note that this camera-side close proximity wireless communication processing is started when a data transfer function by close proximity wireless communication is selected by a menu operation or the like by the user. In the present embodiment, when the data transfer function is selected by the user, all the data (images, moving images, etc.) recorded on the camera recording medium 103 that has not been transferred so far is transferred. It will be described as being selected. However, the embodiment of the present invention is not limited to this, and data to be transferred may be selected by the user, or all recorded data may be selected as data to be transferred. Further, when all the data that is always recorded is selected as the data to be transferred, the camera control unit 101 may delete the data that has been transferred from the camera recording medium 103.

  In step S <b> 401, the camera control unit 101 generates, as a transmission data management table, a list of data that has not been transferred so far among data recorded on the camera recording medium 103. The transmission data management table includes, for example, individual ID information allocated to data, information (completion flag) for determining whether or not the data transfer is completed, and information such as a file name and a file path. Shall. Information about whether or not the data recorded in the camera recording medium 103 has been transferred so far may be recorded in the camera RAM 107 every time the data transfer is completed, for example.

  In step S <b> 402, the camera control unit 101 transmits GUI data stored in the camera ROM 102 for prompting the user to establish a close proximity wireless communication connection to the camera display unit 105 for display. In step S <b> 403, the camera control unit 101 determines whether the digital camera 100 is in close proximity to the external device to which the close proximity wireless communication connection is made and the close proximity wireless communication connection is established. Specifically, the camera control unit 101 determines whether or not the proximity wireless communication connection has been established based on whether or not the camera proximity communication unit 104 has received a signal notified when the proximity wireless communication connection has been established. . If the close proximity wireless communication connection is not established, the camera control unit 101 returns the process to S402, and if the close proximity wireless communication connection is established, the camera control unit 101 moves the process to S404.

  In step S <b> 404, the camera control unit 101 transmits a unique ID, which is information for specifying the digital camera 100 stored in the camera ROM 102, to the camera proximity communication unit 104, and transmits the camera proximity communication unit 104 by proximity wireless communication. Let Here, the unique ID is information for specifying an external device connected to the data station 200 by proximity wireless communication, and is information received from the external device of the connection partner when the connection of the proximity wireless communication is established. The camera control unit 101 repeats the process of S404 until a unique ID reception response is received from an external device connected by close proximity wireless communication.

  In step S <b> 405, the camera control unit 101 generates a transmission data list in a format to be transmitted by proximity wireless communication from the transmission data management table (transmission list generation). The transmission data list is list information for allowing the external device connected to the proximity wireless communication to recognize the data to be transmitted in the proximity wireless communication processing. As with the transmission data management table, the file name and the data transfer have been performed. Information only needs to be included. In step S <b> 406, the camera control unit 101 transmits the generated transmission data list to the camera proximity communication unit 104, and transmits the list to the external device connected to the proximity wireless communication. In addition, the camera control unit 101 repeats the process of S406 until it receives a transmission data list reception response from an external device connected by near field communication.

  In step S407, the camera control unit 101 sequentially transmits the data to be transmitted included in the transmission data management table to the camera proximity communication unit 104, and sequentially transmits the data to an external device connected to the proximity wireless communication. When transmission of one file starts, the camera control unit 101 waits for processing until an event occurs in S408. If the camera proximity communication unit 104 receives a data reception response indicating that transmission of one file that has started transmission has been completed, the camera control unit 101 moves the process to S409. If the camera proximity communication unit 104 notifies the camera control unit 101 that the connection status of the proximity wireless communication has been disconnected during the transmission of one file that has started transmission, the process proceeds to step S413. Move to. In the present embodiment, the proximity wireless communication connection is described as a case where the user separates the digital camera 100 from the data station 200 at a distance at which close proximity wireless communication is not possible. .

  When the transmission of one file that has started transmission is completed, the camera control unit 101 turns ON the completion flag of the file that has been transmitted in the transmission data management table in S409 (transmission list update). In step S410, if all the data in the transmission data management table has not been transferred to the external device connected by the close proximity wireless communication, the camera control unit 101 returns the process to step S407 and transmits data of the next file. Specifically, the camera control unit 101 determines whether or not all data in the transmission management table is transferred by determining whether or not the completion flag of the information of all the files in the transmission data management table is ON. to decide. If all data in the transmission data management table has been transferred, the camera control unit 101 moves the process to S411.

  In step S <b> 411, the camera control unit 101 transmits GUI data stored in the camera ROM 102 for prompting the user to disconnect the close proximity wireless communication connection to the camera display unit 105 and displays the GUI data. In step S <b> 412, the camera control unit 101 determines whether or not the proximity wireless communication connection is disconnected because the digital camera 100 is separated from the external device to which the proximity wireless communication connection is made by the user to a position where the proximity wireless communication is not possible. Specifically, the camera control unit 101 determines whether or not the proximity wireless communication connection has been established based on whether or not the camera proximity communication unit 104 has received a signal notified when the proximity wireless communication connection is disconnected. . If the close proximity wireless communication connection is not disconnected, the camera control unit 101 returns the process to S411. If the close proximity wireless communication connection is disconnected, the camera control unit 101 completes the camera close proximity wireless communication process.

  If the close proximity wireless communication connection is disconnected during file transmission in step S408, the camera control unit 101 uses the camera data in step S413 to cause the user to select data to be excluded from the transmission target stored in the camera ROM 102. The data is transmitted to the display unit 105 and displayed. The screen for allowing the user to select data to be excluded from transmission is a screen as shown in FIG. 8. The camera control unit 101 determines the transmission data management table at the time when the close proximity wireless communication connection is disconnected, Configure information. The screen that allows the user to select data to be excluded from transmission includes at least information for specifying data (file name, ID, thumbnail image, etc.) and information on whether or not the data transfer is complete. It only has to be.

  In step S413, the camera control unit 101 determines whether selection of data to be excluded from transmission is completed by the user. Specifically, the camera control unit 101 determines whether or not the camera operation unit 106 has notified that the user has determined data to be excluded from transmission. When the selection of data to be excluded from transmission is completed, the camera control unit 101 stores information on data set as not to be transmitted in the camera RAM 107, and displays a selection screen for data to be excluded from transmission on the camera display unit 105. The process is terminated, and the process proceeds to S415. If the selection of data to be excluded from transmission is not completed, the camera control unit 101 returns the process to S413.

  In step S415, the camera control unit 101 generates a deletion data list (deletion list) for notifying data to be deleted to a device that has been connected by close proximity wireless communication (deletion list generation). The deletion data list is a list of data whose data transfer completion flag is ON in the transmission data completion table among the data set as non-transmission targets selected by the user in S414. The camera control unit 101 generates a deletion data list with reference to the information of the data set as the non-transmission target stored in the camera RAM 107 and the transmission data management table.

  In step S <b> 416, the camera control unit 101 deletes information on data set as non-transmission targets and data that has already been transmitted from the transmission data management table, and updates the transmission data management table to a new transmission data management table. To do. At this time, the new transmission data management table includes only data that was not transmitted before the close proximity wireless communication connection was disconnected and that was not set as a transmission target. That is, the new transmission data management table lists data to be transferred when the close proximity wireless communication connection is resumed.

  Since the processing from S417 to S419 is the same as the processing performed from S402 to S404, the description is omitted, but the camera control unit 101 completes the generation of the deletion data list and the new transmission data management table. The user is prompted again for the proximity wireless communication connection. In step S <b> 420, the camera control unit 101 transmits the deletion data list to the camera proximity communication unit 104, and transmits the deletion data list to the external device connected to the proximity wireless communication. If the response to the deletion data list reception is received, the camera control unit 101 moves the process to S405. At this time, the transmission data list generated in S405 is generated from a new transmission data management table.

  In this way, when the digital camera 100 reconnects after the communication connection is disconnected during data transmission in the proximity wireless communication, the digital camera 100 transmits the information of the data to be deleted and the information of the data whose transmission is resumed after the connection. It is possible to notify the connected external device at once. That is, the user can instruct two processes of resuming data transmission and deleting desired data simply by bringing the devices close again after disconnection.

(Station-side proximity wireless communication processing)
Next, the data station 200 of this embodiment having the above-described configuration, the station-side near field communication process will be further described with reference to the flowchart of FIG. Note that the near-field wireless communication processing on the station side is processing performed after the data station 200 is turned on and various startup processing is completed.

  In step S <b> 501, the control unit 201 determines whether the proximity communication unit 204 has notified the establishment of the proximity wireless communication connection. The control unit 201 moves the process to S502 when the close proximity wireless communication connection is established, and repeats the process of S501 when the close proximity wireless communication connection is not established.

  In step S502, the control unit 201 waits for processing until an event occurs. When the control unit 201 receives information on a unique ID, which is information for specifying an external device, from an external device connected by close proximity wireless communication, the process proceeds to S503. In step S <b> 503, the control unit 201 stores the received unique ID information in the RAM 206 as the unique ID of the external device currently connected to the close proximity wireless communication. In step S <b> 504, the control unit 201 transmits a response signal notifying reception of the unique ID to the external device connected in the proximity wireless communication to the proximity communication unit 204, and transmits the response signal to the external device connected in the proximity wireless communication. Then, the process returns to S502.

  In step S502, when the control unit 201 receives a transmission data list, which is information on data transmitted from the external device, from the external device connected by near field communication, the process proceeds to step S505. In step S505, the control unit 201 creates a reception data management table based on the received transmission data list (reception list recording). The received data management table includes, for example, individual ID information allocated to data, information on whether or not data transfer is completed (completion flag), and information such as a file name and a file path To do. The control unit 201 stores the generated information in the reception management table in the RAM 206 in association with the unique ID of the external device connected by near field communication. In step S506, the control unit 201 transmits a response signal for notifying reception of the transmission data list to the near field communication unit 204, transmits the response signal to the external device connected to the near field wireless communication, and then returns the process to step S502.

  In step S502, if the control unit 201 sequentially receives data to be transferred, that is, data included in the reception data management table, from the external device connected by close proximity wireless communication, the process proceeds to step S507. Note that receiving data refers to the case where all the data of one file has been received in the present embodiment, and the control unit 201 does not move the process to S507 when a part of the data has been received. To do. In step S507, the control unit 201 transmits the data received by the near field communication unit 204 to the recording medium 203 and records the data (data recording). In step S508, the control unit 201 transmits a response signal for notifying reception of data to the near field communication unit 204, and transmits the response signal to the external device connected to the near field wireless communication. Then, the process proceeds to step S509.

  In step S <b> 509, the control unit 201 changes the completion flag of the received data information in the received data management table stored in the RAM 206 to ON. Then, the control unit 201 refers to the information on all completion flags in the reception data management table, and determines whether or not the transfer of all data to be received has been completed. Specifically, if the completion flag for all data in the received data management table is ON, the control unit 201 determines that all data transfer has been completed, moves the process to S511, and completes the completion flag for all data. If is not ON, the process returns to S502.

  In step S <b> 511, the control unit 201 transmits to the audio output unit 205 audio data stored in the ROM 202 that prompts the user to disconnect the close proximity wireless communication connection, and causes the user to be notified. In step S512, the control unit 201 determines whether or not the external device connected by the proximity wireless communication by the user is separated to a distance where the proximity wireless communication connection is not possible and the proximity wireless communication connection is disconnected. If the close proximity wireless communication connection is not disconnected, the control unit 201 returns the process to S511. If the close proximity wireless communication connection is disconnected, the control unit 201 completes this station side close proximity wireless communication process.

  In S502, when the control unit 201 receives a deletion data list, which is information on data to be deleted among the already received data, from an external device connected by close proximity wireless communication, the process proceeds to S513. In step S513, the control unit 201 refers to the received deletion data list and deletes data included in the deletion data list from the recording medium 203. In step S514, the control unit 201 transmits a response signal for notifying reception of the deletion data list to the near field communication unit 204, and transmits the response signal to the external device connected to the data near field wireless communication. Then, the process returns to step S502. .

  If the close proximity communication unit 204 detects disconnection of the close proximity wireless communication connection in S502, the camera control unit 201 returns the process to S501 and waits for reconnection.

  In this way, the data station 200 receives the deletion data list when deleting the data recorded on the recording medium 203, and receives the transmission data list when receiving the data recorded on the recording medium 203. Recording / deleting instructions can be received.

  As described above, the data transmission apparatus according to the present embodiment resumes notification and transmission of data to be deleted when resuming communication after disconnecting the communication connection while transmitting data to the data reception apparatus by proximity wireless communication. Data can be notified to the data receiving device at a time. Specifically, the data transmission device generates a transmission data list when transmitting data, and manages information on whether or not the data transmission is completed. Furthermore, when the close proximity wireless communication connection is disconnected during data transmission, the user is allowed to select data to be excluded from transmission, and among the data not to be transmitted, information on data that has already been transmitted, Generate as a deleted data list. In addition, when data that has already been transmitted when disconnected and data that has been excluded from transmission are deleted from the list of transmission data, a new transmission data list is generated, and close proximity wireless communication connection is resumed The deletion data list and the new transmission data list are transmitted to the data receiving apparatus. When receiving the transmission data list, the data reception device receives the data specified in the transmission data list and records it on the connected recording medium. Further, when the data receiving apparatus receives the deletion data list, the data receiving apparatus deletes the data specified in the deletion data list from the connected recording medium.

  Thereby, when the transfer is interrupted during the transfer of the data by the close proximity wireless communication, it is possible to resume the transfer of the data that has been deleted and transferred by using the close proximity wireless communication from the transferred device.

(Embodiment 2)
In the first embodiment described above, the method of generating and transmitting the deletion data list for notifying the data reception device of data to be deleted on the data transmission device side has been described. In the second embodiment, a method for determining and deleting data to be deleted with reference to information on data not set as a transmission target set in the data transmitting apparatus on the data receiving apparatus side will be described.

  In this embodiment, the digital camera and the data station described as examples of the data transmission device and the data reception device have the same functional configurations as those in the first embodiment, and the description thereof is omitted. Further, in the following camera side proximity wireless communication processing and station side proximity wireless communication processing, the steps for performing the same processing as in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. I will only explain the typical steps.

(Camera-side proximity wireless communication processing)
When the selection of the data to be excluded from transmission is completed in S414, the camera control unit 101 deletes the information of the data that has been excluded from the transmission from the transmission data management table in S601, and moves the process to SS402. In this way, after the close proximity wireless communication connection is resumed and the transmission of the S404 unique ID is completed, the transmission data list generated by the camera control unit 101 in S405 becomes a new transmission data list. In other words, the new transmission data list is a transmission data list in which information on data excluded from transmission is deleted from the transmission data list transmitted before the close proximity wireless communication connection is disconnected, and is finally transferred. This list includes information indicating whether or not the transmission of data is complete. By transferring the new transmission data list generated in this way, the data transmission device can at least resume transmission of the interrupted data.

(Station-side proximity wireless communication processing)
In step S502, when the control unit 201 receives a transmission data list, which is information on data transmitted from the external device, from an external device connected by close proximity wireless communication, the process proceeds to step S701. In step S <b> 701, the control unit 201 refers to the RAM 206, and there is a reception data management table (corresponding table) associated with the unique ID of the external device currently connected by close proximity wireless communication. Determine if it exists. That is, it is determined whether the external device that is currently connected by proximity wireless communication is an external device that is disconnected during data reception via the proximity wireless communication connection. The control unit 201 moves the process to S <b> 702 if the external device that is currently connected to close proximity wireless communication is an external device that is disconnected during data reception, and is not an external device that is disconnected during data reception. Moves the process to S505.

  In step S <b> 702, the control unit 201 refers to the received transmission data list, and detects data that does not exist in the transmission data list from among pieces of information of data whose completion flag is ON included in the corresponding table. That is, the control unit 201 determines that data that is not instructed in the received transmission data list and that has been received and recorded on the recording medium 203 is data to be deleted. Then, the control unit 201 causes the recording medium 203 to delete data that does not exist in the detected transmission data list, and moves the process to S506. Then, the reception data list is updated (reception list update).

  In this way, the data station 200 can recognize and delete data to be deleted from the difference between the transmission data lists received before and after the close proximity wireless communication connection is disconnected.

  As described above, the data transmission apparatus according to the present embodiment resumes data transmission when the communication connection is resumed while data is being transmitted to the data reception apparatus by proximity wireless communication. It is possible to delete data to be deleted. Specifically, the data transmission device generates a transmission data list when transmitting data, and manages information on whether or not the data transmission is completed. Furthermore, when the close proximity wireless communication connection is disconnected during data transmission, the user is made to select data to be excluded from transmission. Then, the data excluded from the transmission target is deleted from the transmission data list, a new transmission data list is generated, and the new transmission data list is transmitted to the data receiving device when the close proximity wireless communication connection is resumed. To do. When receiving the transmission data list, the data reception device receives the data specified in the transmission data list and records it on the connected recording medium. If the data receiving apparatus has already received the transmission data list from the same data transmitting apparatus and has not received all the data specified in the transmission data list, the data receiving apparatus performs the following processing. . In other words, the old transmission data list is compared with the newly received transmission data list, and if there is data that has been received in the old transmission data list and is not included in the newly received transmission data list, From the connected recording medium.

  As a result, when the transfer is interrupted during the transfer of the data in the proximity wireless communication, the data set to be excluded from the transmission target is deleted from the transferred device using the proximity wireless communication, and the transfer of the data that has not been transferred yet. It is possible to resume the transfer.

(Other embodiments)
The present invention can also be realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, or the like) of the system or apparatus reads the program. It is a process to be executed.

Claims (11)

A data transmission device that establishes a connection with a data reception device and transmits data,
  Data management means for managing data to be transmitted among data recorded on a recording medium connected to the data transmission device;
  A transmission means for transmitting the data to be transmitted in a transmission process;
  A determination unit that determines whether an event that interrupts the transmission process occurs during transmission of the data to be transmitted by the transmission unit;
  A selection unit that selects, based on a user operation, data to be excluded from the transmission target among the data to be transmitted when the determination unit determines that an event that interrupts the transmission process has occurred;
  Resuming means for resuming the transmission processing interrupted by an event that interrupts the transmission processing,
  The transmission means, when the transmission process is resumed by the resumption means, among the data selected by the selection means, a notification for deleting data already transmitted before interruption from the data receiving device; A data transmission device that transmits to the data reception device data that has not been transmitted to the data reception device before the interruption and that is not excluded from the transmission target. The data transmission apparatus according to claim 1, wherein the data management unit manages the data to be transmitted using a transmission list, and deletes the data selected by the selection unit from the transmission list. . The data management means manages the data already transmitted before the interruption among the data selected by the selection means using a deletion list,
  3. The data according to claim 1, wherein the transmission unit transmits a notification for deleting data already transmitted before the interruption from the data receiving device based on the content of the deletion list. 4. Transmitter device. 4. The data transmission apparatus according to claim 3, wherein the deletion list does not include data that has not been transmitted to the data reception apparatus before the interruption. Communication with the data receiving device is performed by proximity wireless communication,
  5. The data transmission device according to claim 1, wherein the event for interrupting the transmission process includes a disconnection of the close proximity wireless communication during the transmission process. 6. The said restarting part restarts the said transmission process, when the connection of near field communication is performed again after the said transmission process is interrupted by the said near field communication having been cut | disconnected. Data transmission device. When it is determined by the determination means that an event for interrupting the transmission process has occurred, the display further includes a display means for displaying an operation screen for accepting a user operation,
  The data transmission device according to any one of claims 1 to 6, wherein the selection unit selects data to be excluded from the transmission target based on a user operation received via the operation screen. . The operation screen includes a list of data candidates to be excluded from the transmission target,
  8. The data transmission according to claim 7, wherein the data candidates to be excluded from the transmission target include data that has already been transmitted before the interruption of the transmission process and data that has not been transmitted before the interruption. apparatus. 9. The data transmission apparatus according to claim 1, wherein the data transmission apparatus operates as a digital camera. A method of controlling a data transmission device that establishes a connection with a data reception device and transmits data,
  A data management process for managing data to be transmitted among data recorded on a recording medium connected to the data transmission device;
  A transmission step of transmitting the transmission target data in a transmission process;
  A determination step of determining whether an event that interrupts the transmission process occurs during transmission of the transmission target data in the transmission step;
  A selection step of selecting, based on a user operation, data to be excluded from the transmission target among the data to be transmitted when it is determined that an event that interrupts the transmission process has occurred in the determination step;
  Resuming the transmission process suspended by an event that interrupts the transmission process,
  When the transmission process is resumed in the resuming step, among the data selected in the selection step, a notification for deleting data already transmitted before interruption from the data receiving device, and before the interruption A method for controlling a data transmitting apparatus, comprising: transmitting, to the data receiving apparatus, data that is not excluded from the transmission target among data that has not been transmitted to the data receiving apparatus. The program for functioning a computer as each means of the data transmitter of any one of Claims 1 thru | or 9.

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