JP6080496B2 - Display device and display method - Google Patents

Description

  The present invention relates to a display device and a display method.

  In recent years, display devices capable of reproducing image files or moving image files stored in a memory card such as an SD card have been widely used.

  When adding an image file or moving image file to be displayed on the display device to the memory card, the user usually removes the memory card from the display device and externally stores the image file or moving image file to be displayed. It is necessary to take it to the terminal. For this reason, such work is troublesome for the user.

  In addition, if the display device can be connected to an external terminal via a network, an image file or a moving image file can be added without removing the memory card by providing the display device with a file reception function via the network. However, usage conditions are limited because it is necessary to implement a file reception function and network environment that are based on the network.

  Therefore, a card type wireless communication device having a memory function, a wireless LAN access point function, and a data transmission / reception function, which has recently appeared, can be used. In such a case, the image file or moving image file is transmitted directly from the external terminal holding the image file or moving image file to the card type wireless communication device via the wireless LAN. Stored in non-volatile memory. Since the display device can recognize the installed card type wireless communication device as a removable storage device, it is possible to play back image files or video files by accessing the data stored in the nonvolatile memory via the file system. It becomes.

  However, since such a card-type wireless communication device independently transmits and receives data to and from the external terminal, the display device stores the image file or moving image file received from the external terminal by the card-type wireless communication device in the nonvolatile memory. It cannot be detected. Therefore, even if an image file or a moving image file that the user wants to display is transmitted, the display device cannot reflect the user's intention.

  In response to the above problems, an electronic device is disclosed that transmits a reset signal for notifying that data in a nonvolatile memory has been updated to a host device (see Patent Document 1).

JP 2009-282617 A

  In such a conventional electronic device, it is necessary to add a function for transmitting a reset signal, and also in a display device which is a host device, it is necessary to change hardware for receiving the reset signal. Therefore, there is a problem that a card-type wireless communication apparatus having a general memory function, a wireless LAN access point function, and a data transmission / reception function that are prevalent cannot be used as it is.

  Therefore, an object of the present invention is to detect an update of an image file or a moving image file in a general-purpose card-type wireless communication apparatus and perform necessary processing.

In addition, a display device according to one embodiment of the present invention stores a nonvolatile memory that stores a file, a wireless communication unit that performs wireless communication, and a file received via the wireless communication unit in the nonvolatile memory It is determined whether or not a new operation instruction file indicating an operation instruction is stored in the non-volatile memory and the interface unit that connects the card type wireless communication device including the control unit, and the new operation instruction file is stored. The operation instruction file confirmation unit that acquires the operation instruction indicated by the new operation instruction file and deletes the new operation instruction file from the nonvolatile memory; and the operation instruction file confirmation A processing execution unit that performs processing in accordance with an operation instruction acquired by the unit, and the interface unit includes the card-type wireless communication device. The operation instruction file confirmation unit detects the connection of the card-type wireless communication device when the interface unit detects the connection of the card-type wireless communication device or when a predetermined time elapses. It is characterized in that it is determined whether or not an operation instruction file is stored.

In addition, a display method according to one embodiment of the present invention includes a nonvolatile memory that stores a file, a wireless communication unit that performs wireless communication, and a file that is received via the wireless communication unit. It is determined whether or not a new operation instruction file indicating an operation instruction is stored in the non-volatile memory and a connection process for connecting a card type wireless communication apparatus including a control unit, and the new operation instruction file is stored. If there is, the operation instruction shown in the new operation instruction file is acquired, the operation instruction file confirmation process for deleting the new operation instruction file from the nonvolatile memory, and the operation instruction file confirmation A process execution process for performing processing according to the operation instruction acquired in the process, wherein the operation instruction file confirmation process includes the card-type wireless communication When the time location has a predetermined or when connected has elapsed, the non-volatile memory, the new operation instruction file and judging whether stored.

  According to one embodiment of the present invention, it is possible to detect an update of an image file or a moving image file in a general-purpose card-type wireless communication device and perform necessary processing.

It is a block diagram which shows roughly the structure of the network system in Embodiment 1-3. 1 is a block diagram schematically showing a configuration of a card-type wireless communication apparatus in Embodiment 1. FIG. 3 is a block diagram schematically showing a configuration of a display device according to Embodiments 1 and 2. FIG. 4 is a flowchart showing main processing when a card-type wireless communication device is attached to the display device according to the first embodiment. 4 is a flowchart illustrating a file update determination process in the display device according to the first embodiment. 5 is a flowchart illustrating a first example of file access exclusion control processing in the display device according to the first embodiment. 12 is a flowchart illustrating a second example of file access exclusion control processing in the display device according to the first embodiment. 4 is a flowchart showing a file list display process in the display device according to the first embodiment. 4 is a flowchart showing file reproduction processing in the display device according to the first embodiment. FIG. 10 is a block diagram schematically showing a configuration of a display device according to a third embodiment. 10 is a flowchart illustrating main processing when a card-type wireless communication device is attached to a display device according to Embodiment 3. 14 is a flowchart illustrating an operation instruction file confirmation process in the display device according to the third embodiment.

  Hereinafter, a display device according to an embodiment and a display method performed by the display device will be described.

Embodiment 1 FIG.
FIG. 1 is a block diagram schematically showing a configuration of a network system 160 using the display device 100 according to the first embodiment. The network system 160 includes a display device 100, a card-type wireless communication device 120, and an external terminal 140 as an information processing device. The reference numerals in parentheses in FIG. 1 indicate the configurations of the second and third embodiments.

  Here, the card-type wireless communication device 120 is a device that is detachably connected to the display device 100. In this network system 160, an external terminal 140 such as a smartphone having a wireless LAN function recognizes and connects the card-type wireless communication device 120 having a memory function, a wireless LAN access point function, and a data transmission / reception function as a wireless LAN access point. To do. The external terminal 140 and the card-type wireless communication device 120 perform data transmission / reception via the wireless LAN. The display device 100 equipped with the card type wireless communication device 120 recognizes the card type wireless communication device 120 as a removable storage device.

  FIG. 2 is a block diagram schematically showing a configuration of card-type wireless communication apparatus 120 in the first embodiment. The card type wireless communication apparatus 120 includes a wireless LAN unit 121, a nonvolatile memory 122, a control unit 123, and a connection unit 124.

The wireless LAN unit 121 performs wireless communication.
The nonvolatile memory 122 stores a file. The nonvolatile memory 122 stores file system information for managing the file system of the card type wireless communication device 120.
The control unit 123 controls the entire apparatus. For example, the control unit 123 performs file transmission / reception with the external terminal 140 via the wireless LAN unit 121. Then, when the received file is written in the nonvolatile memory 122, the control unit 123 updates the file system information stored in the nonvolatile memory 122. The display device 100 to which the card type wireless communication device 120 is attached can access each file stored in the nonvolatile memory 122 by mounting the card type wireless communication device 120 based on the file system information.
The connection unit 124 is an interface for connecting to an external device. In the present embodiment, card-type wireless communication device 120 is connected to display device 100 via connection unit 124. The card-type wireless communication device 120 is generally composed of a small-sized card device such as an SD card, and can be mounted in a card slot that is an interface unit of various portable devices.

  FIG. 3 is a block diagram schematically showing the configuration of the display device 100 according to the first embodiment. The display device 100 includes a control unit 101, a storage unit 109, a decoder unit 110, a display control unit 111, a display unit 112, an interface control unit (hereinafter referred to as an I / F control unit) 113, and an interface unit ( (Hereinafter referred to as an I / F unit) 114 and an input unit 115.

  The control unit 101 controls the entire display device 100. The control unit 101 further includes a process execution unit 102, a file update determination unit 105, and a file access exclusion control unit 106.

  The process execution unit 102 performs a predetermined process. In the present embodiment, the process execution unit 102 is predetermined for an image file or a movie file stored in the nonvolatile memory 122 of the card type wireless communication device 120 attached to the I / F unit 114. Process. The process execution unit 102 includes a file list generation unit 103 and a file playback unit 104.

  The file list generation unit 103 generates a file list that is a list list of at least one of an image file and a moving image file stored in the nonvolatile memory 122 of the card type wireless communication device 120 attached to the I / F unit 114. Generate. Then, the file list generation unit 103 causes the display unit 112 to display the generated file list via the display control unit 111. In the present embodiment, the file list is a list of both image files and moving image files, but it may be only one of them. The file list may also include files other than image files and moving image files.

  The file playback unit 104 performs playback processing of an image file or a moving image file stored in the nonvolatile memory 122 of the card type wireless communication device 120 attached to the I / F unit 114. For example, the file reproduction unit 104 acquires an image file or a moving image file from the nonvolatile memory 122, reproduces an image based on the image file or the moving image file, and displays the image on the display unit 112.

  The file update determination unit 105 determines whether or not a new file is stored in the nonvolatile memory 122 of the card type wireless communication device 120 attached to the I / F unit 114. For example, the file update determination unit 105 creates record information of a file stored in the non-volatile memory 122 of the card type wireless communication device 120 attached to the I / F unit 114, and calculates a difference from past record information. By checking, it is determined whether or not the recorded information has been updated. Here, the recorded information is information in which file names that are identification information for identifying files stored in the nonvolatile memory 122 of the card type wireless communication device 120 are listed. Note that the file name stored in the recording information may be only the file name of at least one of the image file and the moving image file. By doing so, the file update determination unit 105 can detect that at least one of the image file and the moving image file is newly stored.

  The file access exclusive control unit 106 manages the access right of the nonvolatile memory 122 of the card-type wireless communication device 120 attached to the I / F unit 114, and performs file update determination with the file list generation unit 103 or the file playback unit 104. Exclusive processing is performed so that the unit 105 does not access the nonvolatile memory 122 at the same time.

  The storage unit 109 stores information necessary for processing in the display device 100. For example, in the present embodiment, the storage unit 109 is an access indicating reference recording information that is past recording information managed by the file update determination unit 105 and an access right state managed by the file access exclusive control unit 106. Rights management information is stored.

  The decoder unit 110 performs decoding processing on the encoded image file (for example, JPEG file) or moving image file (for example, MPEG file), and generates image data or moving image data.

  The display control unit 111 controls the display unit 112. For example, the display control unit 111 performs processing for synthesizing graphics data such as a text sentence on the image data or moving image data decoded by the decoder unit 110 and outputs the result to the display unit 112.

  The display unit 112 displays an image based on image data or moving image data under the control of the display control unit 111.

  The I / F control unit 113 is a controller that controls a card device such as an SD card attached to the I / F unit 114. When the card-type wireless communication device 120 is attached to the I / F unit 114, the I / F control unit 113 detects the attachment and gives an attachment notification to the control unit 101.

  The I / F unit 114 is an interface that connects an external device to the display device 100. For example, the I / F unit 114 can be formed by a card slot into which a card device is mounted.

  The input unit 115 receives an instruction input from the user.

  FIG. 4 is a flowchart illustrating main processing when the card-type wireless communication device 120 is mounted on the display device 100 according to the first embodiment.

  When it is detected that the card type wireless communication device 120 is attached to the I / F unit 114 (S10: Yes), the I / F control unit 113 gives an attachment notification to the control unit 101 (S11).

  In the control unit 101 that has received the attachment notification, the file list generation unit 103 starts file list display processing of the files stored in the card-type wireless communication device 120 (S12). The file list generation unit 103 may start the file list display process stored in the card-type wireless communication device 120 when the input unit 115 receives a file list display instruction from the user. The file list display process will be described in detail with reference to FIG.

  After the file list is displayed on the display unit 112, when the input unit 115 receives a file playback instruction specifying a file to be played back from the user (S13: Yes), the file playback unit 104 displays the image specified by the user. The file or moving image file playback process is started (S14). Note that the reproduction processing of an image file or a moving image file will be described in detail with reference to FIG.

  In addition, in the control unit 101 that has received the attachment notification, in parallel with the file list display process (S12) or the like, the file update determination unit 105 determines whether or not a predetermined time has elapsed (S15). The starting point for measuring the predetermined time may be a predetermined time, but may be, for example, when the attachment notification is received or when the predetermined time has passed previously. If the predetermined time has elapsed (S15: Yes), the process proceeds to step S16.

  In step S <b> 16, the file update determination unit 105 starts a process for determining whether or not the record information of the file stored in the nonvolatile memory 122 of the card type wireless communication device 120 has been updated. This file update determination process will be described in detail with reference to FIG.

  Then, the control unit 101 determines whether or not an update notification indicating that the record information of the file stored in the nonvolatile memory 122 of the card type wireless communication device 120 has been updated is received from the file update determination unit 105. Confirm (S17). If an update notification has been received (S17: Yes), the process proceeds to steps S12 and S15. In this case, the file list generation unit 103 of the control unit 101 starts a file list display process (S12). On the other hand, when the update notification has not been received within the predetermined time (S17: No), the process proceeds to step S15.

  As described above, in the main process when the card-type wireless communication device 120 is mounted, update confirmation of file record information is periodically performed in parallel with the file list display process and the file reproduction process.

  FIG. 5 is a flowchart showing file update determination processing in the display device 100 according to the first embodiment.

  When the file update determination process is started, the file access exclusion control unit 106 performs an access right acquisition process (S20). This access right acquisition process will be described in detail with reference to FIG.

  When the access right can be acquired in step S20, the file update determination unit 105 unmounts the card-type wireless communication device 120 once through the I / F control unit 113 and the I / F unit 114, and then mounts it again (S21). ). As a result, mounting is performed with the latest file system information.

  If the mounting is successful, the file update determination unit 105 creates record information of the file stored in the card type wireless communication device 120 (S22).

  Next, the file update determination unit 105 checks whether or not the reference recording information exists in the storage unit 109 (S23). If there is reference record information (S23: Yes), the process proceeds to step S24. If there is no reference record information (S23: No), the process proceeds to step S26.

  In step S <b> 24, the file update determination unit 105 checks a difference between the recording information created in step 22 and the reference recording information stored in the storage unit 109. Thereby, the file update determination unit 105 determines whether or not a new file is stored in the nonvolatile memory 122 of the card type wireless communication device 120. If there is a difference (S24: Yes), the process proceeds to step S25. If there is no difference (S24: No), the process proceeds to step S26.

  In step S <b> 25, the file update determination unit 105 gives an update notification to the control unit 101.

  In step S26, the file update determination unit 105 updates the reference recording information by storing the recording information created in step S22 in the storage unit 109 as the reference recording information (S26).

  Finally, the file access exclusion control unit 106 performs access right release processing (S27). This access right releasing process will be described in detail with reference to FIG.

  As described above, the display device 100 creates the latest recording information by periodically remounting the card-type wireless communication device 120, and confirms whether there is an update based on the created recording information. It is possible to detect that a file has been newly stored.

  FIG. 6 is a flowchart illustrating a first example of the file access exclusion control process in the display device 100 according to the first embodiment. FIG. 6 shows a process when acquiring the access right.

  When the access right acquisition process is started, the file access exclusion control unit 106 acquires access right management information indicating the state of the access right from the storage unit 109 (S30).

  Next, the file access exclusion control unit 106 checks the status of the access right by referring to the acquired access right management information (S31). If the access right is in use (S31: Yes), the process returns to step S30. If the access right is not in use (S31: No), the process proceeds to step S32.

  In step S32, the file access exclusion control unit 106 updates the access right management information stored in the storage unit 109, and changes the access right to the use state (S32).

  FIG. 7 is a flowchart illustrating a second example of the file access exclusion control process in the display device 100 according to the first embodiment. FIG. 7 shows processing when releasing the access right.

  When the access right release process is started, the file access exclusion control unit 106 updates the access right management information stored in the storage unit 109 and changes the access right to an unused state (S40).

  FIG. 8 is a flowchart showing a file list display process in the display device 100 according to the first embodiment.

  When the file list display process is started, the file access exclusion control unit 106 performs an access right acquisition process (S50). This process is illustrated in FIG.

  When the access right can be acquired in step 50, the file list generation unit 103 unmounts the card type wireless communication device 120 once through the I / F control unit 113 and the I / F unit 114, and then mounts it again (S51). ).

  If the mounting is successful, the file list generating unit 103 reads the image file and the moving image file stored in the card-type wireless communication device 120 and constructs list information necessary for file list display (S52).

  The file list generation unit 103 displays the file list on the display unit 112 when the list information is constructed (S53).

  Finally, the file access exclusion control unit 106 performs access right release processing (S54). This process is illustrated in FIG.

  FIG. 9 is a flowchart showing file reproduction processing in the display device 100 according to the first embodiment.

  When file reproduction is started, the file access exclusion control unit 106 performs an access right acquisition process (S60). This process is illustrated in FIG.

  Next, the file reproduction unit 104 reads an image file or a moving image file stored in the card-type wireless communication device 120 instructed to reproduce, and causes the decoder unit 110 to perform a decoding process thereof (S61).

  The file reproduction unit 104 causes the display unit 112 to display an image according to the decoded image data or moving image data (S62).

  Finally, the file access exclusion control unit 106 performs access right release processing (S63). This process is illustrated in FIG.

  As described above, during the file list display process or the file playback process, while the card-type wireless communication device 120 is mounted and the file is being accessed, the file update determination unit 105 performs the file update determination process. By preventing the card-type wireless communication apparatus 120 from being unmounted, it is possible to prevent the file display from being normally accessed in the file list display process or the file reproduction process, and to prevent the image display from being stopped halfway.

  As described above, according to the present embodiment, a general card-type wireless communication device 120 is mounted on the display device 100, and an image file or a video file that the user wants to display on the display device 100 is carded from the external terminal 140 such as a smartphone. When the file is transmitted to the type wireless communication apparatus 120, the list of files including the immediately transmitted image file or moving image file is displayed, so that the user can quickly move to the reproduction operation. For this reason, a user's convenience can be improved.

  Further, according to the present embodiment, it is detected that a file has been transmitted from the external terminal 140 to the card-type wireless communication device 120 without destroying the displayed image even during file list display or playback. can do. For this reason, satisfaction can be given to the user.

Furthermore, according to the present embodiment, since a general card-type wireless communication device 120 having a memory function, a wireless LAN access point function, and a data transmission / reception function can be used, an existing display is provided. By incorporating a new function into the apparatus 100 , the present invention can be easily realized.

Embodiment 2. FIG.
As shown in FIG. 1, the network system 260 in the second embodiment includes a display device 200, a card type wireless communication device 120, and an external terminal 140. The network system 260 in the second embodiment is different from the network system 160 in the first embodiment in the display device 200.

  As shown in FIG. 3, the display device 200 according to the second embodiment includes a control unit 201, a storage unit 109, a decoder unit 110, a display control unit 111, a display unit 112, and an I / F. A control unit 113, an I / F unit 114, and an input unit 115 are provided. The display device 200 according to the second embodiment is different from the display device 100 according to the first embodiment in a control unit 201.

  The control unit 201 controls the entire display device 200. Furthermore, the control unit 201 includes a process execution unit 102, a file update determination unit 205, and a file access exclusion control unit 106. The control unit 201 in the second embodiment is different from the control unit 101 in the first embodiment in the file update determination unit 205.

  The file update determination unit 205 creates record information of a file stored in the nonvolatile memory 122 of the card type wireless communication device 120 attached to the I / F unit 114, and confirms a difference from past record information. Then, a determination process is performed to determine whether the recorded information has been updated. The recorded information in the second embodiment is information indicating the total number of files stored in the nonvolatile memory 122 of the card-type wireless communication device 120 or information indicating the memory usage of the nonvolatile memory 122. The total number of files may be the total number of at least one of image files and moving image files.

  As described above, according to the present embodiment, it is possible to shorten the time for creating the record information and the time required to determine whether or not to update, so that the file list can be displayed quickly.

Embodiment 3 FIG.
As shown in FIG. 1, the network system 360 in the third embodiment includes a display device 300, a card type wireless communication device 120, and an external terminal 140. The network system 360 in the third embodiment is different from the network system 160 in the first embodiment in the display device 300.

  FIG. 10 is a block diagram schematically showing the configuration of the display device 300 according to the third embodiment. The display device 300 includes a control unit 301, a storage unit 109, a decoder unit 110, a display control unit 111, a display unit 112, an I / F control unit 113, an I / F unit 114, and an input unit 115. Is provided. Display device 300 according to Embodiment 3 is different from display device 100 according to Embodiment 1 in control unit 301.

  The control unit 301 controls the entire display device 300. Further, the control unit 301 includes a process execution unit 302, a file access exclusion control unit 106, and an operation instruction file confirmation unit 307. The control unit 301 according to the third embodiment is the same as the control according to the first embodiment in that the process execution unit 302 and the operation instruction file confirmation unit 307 are provided instead of the file update determination unit 105. Different from the part 101.

  The operation instruction file confirmation unit 307 detects an operation instruction file indicating an operation instruction from the files stored in the nonvolatile memory 122 of the card type wireless communication device 120 attached to the I / F unit 114, and operates the operation instruction file. An operation instruction (for example, operation instruction content and information necessary for the operation) indicated in the instruction file is acquired.

  The operation instruction file has a predetermined specific file name, and the operation instruction content and information necessary for the operation are described in the operation instruction file. The operation instruction content is file reproduction or time setting, and the information necessary for the operation is a file name or time information indicating a set time.

  The process execution unit 302 performs a predetermined process. In the present embodiment, the process execution unit 302 performs processing according to the operation instruction acquired by the operation instruction file confirmation unit 307. The process execution unit 302 includes a file list generation unit 103, a file playback unit 104, and a time processing unit 308. The processing execution unit 302 in the third embodiment is different from the processing execution unit 102 in the first embodiment in that it further includes a time processing unit 308.

  The time processing unit 308 measures the time on the display device 300. In addition, when the operation instruction file confirmed by the operation instruction file confirmation unit 307 indicates time setting, the time processing unit 308 sets the measured time to the time indicated in the operation instruction file.

  Further, the operation instruction content may be indicated by a file name. In this case, only information necessary for the operation is described in the file. For example, when file reproduction is instructed, the file name is “IMG_Play.txt”, and the file includes “00001.jpg” indicating an image file or a moving image file to be reproduced as a text sentence. When the file list display is instructed, the file name is “IMG_ListPlay.txt”, and nothing is described in the file.

  FIG. 11 is a flowchart showing main processing when the card-type wireless communication device 120 is attached to the display device 300 according to the third embodiment.

  When it is detected that the card-type wireless communication device 120 is mounted on the I / F unit 114 (S70: Yes), the I / F control unit 113 gives a mounting notification to the control unit 301 (S71).

  Receiving the attachment notification, the control unit 301 confirms whether or not the operation instruction notification is received from the operation instruction file confirmation unit 307 (S72). If an operation instruction notification has been received (S72: Yes), the process proceeds to step S73. If an operation instruction notification has not been received (S72: No), the process proceeds to step S74.

  In step S73, the control unit 301 confirms whether the operation instruction notification received from the operation instruction file confirmation unit 307 is a file list display instruction. If the operation instruction notification is a file list display instruction (S73: Yes), the process proceeds to step S74. If the operation instruction notification is not a file list display instruction (S73: No), the process proceeds to step S74. Proceed to S76.

  In step S74, the file list generation unit 103 starts a file list display process for files stored in the card-type wireless communication device 120 (S74). Here, the file list generation unit 103 may start the file list display process when the input unit 115 receives a file list display instruction from the user. The file list display process is shown in FIG. Then, the process proceeds to step S75.

  In step S75, the file playback unit 104 checks whether the input unit 115 has received a file playback instruction from the user (S75). If a file playback instruction has been received (S75: Yes), the process proceeds to step S77.

  In step S76, the control unit 301 confirms whether or not the operation instruction notification received from the operation instruction file confirmation unit 307 is a file reproduction instruction. If the operation instruction notification is a file reproduction instruction (S76: Yes), the process proceeds to step S77. If the operation instruction notification is not a file reproduction instruction (S76: No), the process proceeds to step S78. move on.

  In step S77, the file playback unit 104 starts playback processing of the designated image file or moving image file. Note that the reproduction processing of the image file or moving image file is shown in FIG.

  In step S78, the control unit 301 confirms whether or not the operation instruction notification received from the operation instruction file confirmation unit 307 is a time setting instruction. If the operation instruction notification is a time setting instruction (S78: Yes), the process proceeds to step S79. If the operation instruction notification is not a reproduction instruction (S78: No), the flow ends.

  In step S79, the time processing unit 308 sets the measured time to the instructed time.

  In addition, in the control unit 301 that has received the attachment notification, the operation instruction file confirmation unit 307 determines whether or not a predetermined time has elapsed in parallel with the processing of steps S72 to S79 (S80). The starting point for measuring the predetermined time may be a predetermined time, but may be, for example, when the attachment notification is received or when the predetermined time has passed previously. If a predetermined time has elapsed (S80: Yes), the process proceeds to step S81.

  In step S <b> 81, the operation instruction file confirmation unit 307 starts the operation instruction file detection process from the files stored in the nonvolatile memory 122 of the card type wireless communication apparatus 120. When there is an operation instruction file, the operation instruction file confirmation unit 307 gives an operation instruction notification to the control unit 301. The operation instruction file posting process will be described in detail with reference to FIG.

  Next, the control unit 301 confirms whether an operation instruction notification is received from the operation instruction file confirmation unit 307 (S82). If an operation instruction notification has been received (S82: Yes), the process proceeds to steps S72 and S80. If an operation instruction notification has not been received (S82: No), the process proceeds to step S80.

  As described above, in the main process after the card-type wireless communication device 120 is installed, the update of the record information of the file is periodically performed in parallel with the file list display process and the like.

  FIG. 12 is a flowchart showing an operation instruction file confirmation process in the display device 300 according to the third embodiment.

  When the operation instruction file confirmation process is started, the file access exclusion control unit 106 performs an access right acquisition process (S90). This process is illustrated in FIG.

  If the access right can be acquired in step S90, the operation instruction file confirmation unit 307 unmounts the card type wireless communication device 120 once and mounts it (S91).

  Next, the operation instruction file confirmation unit 307 searches for an operation instruction file from the files stored in the card type wireless communication device 120 (S92).

  Then, the operation instruction file confirmation unit 307 confirms the presence or absence of the operation instruction file (S93). If there is an operation instruction file (S93: Yes), the process proceeds to step S94. If there is no operation instruction file (S93: No), the process proceeds to step S102.

  In step S94, the operation instruction file confirmation unit 307 analyzes the operation instruction file, acquires operation instruction contents and information necessary for the operation, and confirms the operation instruction contents. If the operation instruction content is a file reproduction instruction, the process proceeds to step S95. If the operation instruction content is a file list display instruction, the process proceeds to step S97, and the operation instruction content is a time setting instruction. In the case, the process proceeds to step S98.

  In step S95, the operation instruction file confirmation unit 307 acquires a file reproduction instruction. Then, the operation instruction file confirmation unit 307 acquires the file name to be reproduced (S96), and the process proceeds to step S100.

  In step S97, the operation instruction file confirmation unit 307 acquires a file list display instruction. Then, the process proceeds to step S100.

  In step S98, the operation instruction file confirmation unit 307 acquires a time setting instruction. Then, the operation instruction file confirmation unit 307 acquires time information to be set, and the process proceeds to step S100.

  In step S <b> 100, the operation instruction file confirmation unit 307 gives an operation instruction notification corresponding to the acquired instruction content to the control unit 301.

  Then, after transmitting the operation instruction notification, the operation instruction file confirmation unit 307 deletes the operation instruction file stored in the card-type wireless communication device 120 (S101). Thereby, the operation instruction file confirmation unit 307 can detect whether or not a new operation instruction file has been stored, depending on whether or not the card-type wireless communication apparatus 120 has an operation instruction file.

  Finally, the file access exclusion control unit 106 performs access right release processing (S102). This process is illustrated in FIG.

  As described above, it is possible to detect that the operation instruction file is newly stored by periodically remounting the card-type wireless communication device 120.

  As described above, according to the present embodiment, an image file or a moving image file that the user wants to display on the display device 300 when the general card-type wireless communication device 120 that is widely used is mounted on the display device 300, And it can detect that the operation instruction file is transmitted from the external terminal 140 such as a smartphone to the card-type wireless communication device 120. Thus, according to the present embodiment, it is possible to display a list of files including immediately transmitted image files or moving image files. For this reason, user convenience can be improved.

  100, 200, 300 Display device, 101, 201, 301 Control unit, 103 File list generation unit, 104 File playback unit, 105, 205 File update determination unit, 106 File access exclusive control unit, 307 Operation instruction file confirmation unit, 308 Time processing unit, 109 storage unit, 110 decoder unit, 111 display control unit, 112 display unit, 113 I / F control unit, 114 I / F unit, 115 input unit, 120 card type wireless communication device, 121 wireless LAN unit, 122 non-volatile memory, 123 control unit, 124 connection unit, 140 external terminal, 160 network system.

Claims (4)

Interface for connecting a card-type wireless communication device including a nonvolatile memory for storing a file, a wireless communication unit for performing wireless communication, and a control unit for storing a file received via the wireless communication unit in the nonvolatile memory And
It is determined whether or not a new operation instruction file indicating an operation instruction is stored in the nonvolatile memory. When the new operation instruction file is stored, the new operation instruction file is indicated by the new operation instruction file. An operation instruction file confirming unit that deletes the new operation instruction file from the nonvolatile memory, and
A process execution unit that performs processing according to the operation instruction acquired by the operation instruction file confirmation unit,
The interface unit detects connection of the card type wireless communication device,
The operation instruction file confirmation unit stores the new operation instruction file in the nonvolatile memory when the interface unit detects connection of the card-type wireless communication device or when a predetermined time has elapsed. It is judged whether it was done or not. The operation instruction file has a specific file name determined in advance, and the operation instruction content and information necessary for the operation are described as the operation instruction.
The display device according to claim 1. Connection for connecting a card-type wireless communication device including a nonvolatile memory for storing a file, a wireless communication unit for performing wireless communication, and a control unit for storing the file received via the wireless communication unit in the nonvolatile memory Process,
It is determined whether or not a new operation instruction file indicating an operation instruction is stored in the nonvolatile memory. When the new operation instruction file is stored, the new operation instruction file is indicated by the new operation instruction file. An operation instruction file confirming process for deleting the new operation instruction file from the nonvolatile memory, and
A process execution process for performing processing according to the operation instruction acquired in the operation instruction file confirmation process,
The operation instruction file confirmation process determines whether the new operation instruction file is stored in the nonvolatile memory when the card-type wireless communication device is connected or when a predetermined time has elapsed. A display method characterized by judging. The operation instruction file has a specific file name determined in advance, and the operation instruction content and information necessary for the operation are described as the operation instruction.
The display method according to claim 3.

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