JP4103062B2 - Data communication system and portable terminal device - Google Patents

Description

[0002]
BACKGROUND OF THE INVENTION
The present invention relates to an information management portable terminal device, a network system, and a method. For example, an information management portable terminal device and a network system that display an image captured by a digital camera from a display unit of an arbitrary portable terminal device and allow a user to visually check the image. It is suitable for application to.
[0003]
[Prior art]
Conventionally, a digital camera generates predetermined image data by converting an image of a photographed subject, and compresses and encodes this image data by an encoding method based on, for example, JPEG (Joint Photographic Experts Group) standard. Is stored in the storage unit. The digital camera outputs the compression-encoded data stored in the storage unit to a terminal device such as a personal computer or a printer via, for example, an IEEE (Institut of Electrical and Electronics Engineers) 1394 interface.
[0004]
The terminal device restores the compressed encoded data supplied from the digital camera to the original image data, and displays the image on the display unit of the personal computer based on the restored image data, or prints the image from the printer. And outputting the image of the subject taken by the digital camera to the user.
[0005]
[Problems to be solved by the invention]
In a digital camera having such a configuration, image data (number of images) is stored within the capacity range of the storage device. Since this image data has a large data capacity, it immediately fills the capacity of the storage device. As a result, the storage device of the digital camera has a problem that it cannot store the number of images desired by the user in the storage device.
[0006]
The present invention has been made in view of the above points. Image data temporarily stored in a storage device of a digital camera is installed in a predetermined network communication line network via a public wireless communication line. Stored on the server. Thus, an information management portable terminal device, a network system, and a method that can store more image data are proposed.
[0007]
[Means for Solving the Problems]
  In order to solve this problem, the present invention provides:A communication system including a display device and a mobile terminal device, wherein the display device includes a communication unit capable of communicating with a server without going through a base station, and the mobile terminal device is a storage target in the server An acquisition unit that acquires data to be used, a wireless communication unit that can wirelessly communicate with the base station, and a storage control unit that stores the data acquired by the acquisition unit to the server, and a communication partner And a display control unit that transmits a command to the display device using a wireless communication unit capable of wireless communication directly and displays the data stored in the server by the storage control unit. .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
[0009]
In FIG. 1, reference numeral 10 denotes a network system as a whole, and the digital camera 1 transmits the image information data signal rf using a public wireless line such as PHS (Personal Handyhon System), for example, The image information data is transmitted to the data server 4 (hereinafter referred to as the server 4) sequentially via the network 3, and the access S composed of various commands is transmitted, so that the network terminal device 5 and the network 3 are sequentially transmitted. The server 4 can be accessed. A user who operates the digital camera 1 can store image information data from the digital camera 1 through the network 3 in the server 4, and can also store the image information data stored in the server 4 from the server 4 as necessary. It can be displayed on the network communication terminal device 5 via the network 3.
[0010]
As shown in FIG. 2, the digital camera 1 includes a central processing unit (hereinafter referred to as a CPU: Central Processing Unit) 11, a RAM (Random Access Memory) 12, a ROM (Read Only Memory) 13, and an EEPROM (Electrically Erasable Ready Memory). ) 14, the long-range wireless communication unit 15, the short-range wireless communication unit 16, the image input unit 17, the operation input unit 18, and the voice input unit 19 are connected to the bus BUS.
[0011]
The CPU 11 controls each circuit unit by executing a data processing operation in accordance with a processing program stored in the ROM 13. The CPU 11 transmits processing contents to the server 4 as necessary.
[0012]
The EEPROM 14 is a telephone for connecting to the base station 2 when the public wireless line connection information for connecting the digital camera 1 to the base station 2 and the data stored in the RAM 12 are full in the first area. The number information is stored as various information unique to the user who owns the digital camera 1.
[0013]
Further, the EEPROM 14 has a TCP / IP (Transmission Control Protocol / Internet Protocol) that is a transmission control protocol for connecting the base station 2 to the network 3 when the data stored in the RAM 12 is full in the second area. ) And PPP (Point to Point Protocol), which is a protocol that realizes inter-connectivity of internetwork devices on a serial line in a multi-protocol environment, and is stored as network connection information for connecting the digital camera 1 to the network 3 .
[0014]
Since the network connection information includes information that can be transmitted to the specific server 4, the digital camera 1 can transmit the target server 4 from a large number of servers on the network.
[0015]
Furthermore, when the data stored in the RAM 12 is full in the third area, the EEPROM 14 stores authentication ID information unique to the digital camera for performing authentication with the server 4 via the base station 2 and the network 3 sequentially. The digital camera 1 is recorded as an authentication ID (IDentifier) for authentication by the server 4.
[0016]
For example, when the user purchases the digital camera 1, the authentication information is registered with the server 4 via the registration device, and thus ID information of the same combination is registered in the server 4 and the digital camera 1. become.
[0017]
When shooting a subject, the user presses the shutter button 6 (FIG. 1) provided on the upper surface of the casing of the digital camera 1 to cause the digital camera 1 to generate a shooting command. At this time, the CPU 11 outputs an image signal S1 corresponding to a subject image formed on an image pickup device (CCD: Charge Coupled Device) 17A provided in the image input unit 17 via the optical lens 7 (FIG. 1) as A / The image data D1 is converted by the D conversion unit 17B and transferred to the RAM 12 via the interface 17C.
[0018]
At this time, the CPU 11 generates a date and time of shooting using a timer built in the ROM 13, and generates additional information Dad1 including a shooting number of the image data, and adds this to the image data D1. This prevents the user from forgetting the image data when the user displays an image from the server 4 on the display unit of the network terminal device 5 (described later).
[0019]
The RAM 12 stores image data D1 with additional information added. The RAM 12 then obtains image data D2, image data D3,... Image data Dn obtained from the image input unit 17 based on the image signal S2, image signal S3,. Is stored. In response to this, the CPU 11 generates additional information Dad2, additional information Dad3... Additional information Dadn, and adds them to the corresponding image data (D2 to Dn).
[0020]
The CPU 11 stores the data storage capacity of the RAM 12, and determines whether or not the RAM 12 is full by comparing the data storage capacity with the currently stored data of the RAM 12. The CPU 11 continues to store new image data in the RAM 12 until the RAM 12 becomes full.
[0021]
  On the other hand, when the CPU 11 determines that the capacity of the RAM 12 is full, Long-distance wireless communicationOn the condition that 15 is communicable, a connection request is made to the network 3 (FIG. 1) via the antenna 15C and the base station 2 (FIG. 1) in sequence, thereby switching to the transmission mode.
[0022]
In the transmission mode, the CPU 11 authenticates whether the user who owns the digital camera 1 has the right to use the server 4 by searching and verifying according to the authentication processing procedure shown in FIG. Send data.
[0023]
  When the CPU 11 issues a connection request and connects to the network 3, the CPU 11 reads the authentication ID from the EEPROM 14 and sends it through the interface 15B.Long-distance wireless communication unit15 for transfer.Long-distance wireless communication unit15 modulates the authentication ID supplied from the EEPROM 14 by the portable radio telephone modem 15A to generate an authentication ID signal idrf composed of an RF (Radio Frequency) signal, and transmits this to the base station 2 via the antenna 15C. By doing so, an authentication processing procedure as shown in FIG. 3 is executed.
[0024]
That is, in FIG. 3, the base station 2 receives the authentication ID signal supplied from the digital camera 1, demodulates it, extracts the authentication ID, and transmits it to the server 4 via the network 3.
[0025]
As shown in FIG. 4, the server 4 includes a CPU 21, a memory 22, a ROM 23, a communication interface 24, and a database 25 connected to the data bus BUS. The CPU 21 executes data processing according to a program stored in the memory 22. To do.
[0026]
That is, the server 4 receives the authentication ID supplied from the base station 2 from the communication interface 24 and executes the authentication process. In the authentication process, the server 4 searches the database 25 for whether or not the same authentication ID exists for the received authentication ID. When the same authentication ID exists, the server 4 verifies as the next processing.
[0027]
If the same authentication ID does not exist, this indicates that the digital camera 1 does not have an authentication ID. At this time, the user disconnects the connected line and registers the authentication ID combination of the digital camera 1 and the server 4 with the server 4 via the registration device. Then, the user can shift the server 4 to the next search process (verification) by connecting again via the network 3.
[0028]
In the verification, the server 4 monitors each authentication ID (user who owns the digital camera) stored in the database 25 to grasp the charge (service fee) for the usage of the server 4. The server 4 also knows whether or not the user has completed the billing process for the usage. Based on this, it is verified whether or not image data can be transmitted to the server 4. In the verification result, if there is no black list for charging, the server 4 permits authentication. Then, the server 4 generates a verification result command Dcom and transmits it to the base station 2 via the communication interface 24 and the network 3 sequentially.
[0029]
The base station 2 receives the authentication result command Dcom supplied from the server 4 and modulates it to generate an authentication result command signal comrf composed of an RF signal. The base station 2 transmits this to the digital camera 1 via the network 3.
[0030]
The digital camera 1 (FIG. 2) receives the RF signal comrf supplied from the base station 2, and extracts the authentication result command Dcom by demodulating it. Based on this, the CPU 11 reads out the image data stored in the RAM 12 and transmits it.
[0031]
In the image data transmission means, the wide area wireless communication unit 15 of the digital camera 1 (FIG. 2) modulates the image data D1 to Dn supplied from the RAM 12, thereby generating an RF (Radio Frequency) signal dirf. It transmits to the base station 2 via the antenna 15C.
[0032]
The base station 2 receives the RF signal dirf supplied from the digital camera 1, demodulates the RF signal dirf, extracts image data D 1 to Dn, and transmits them to the server 4.
[0033]
The server 4 (FIG. 5) receives the image data D1 to Dn supplied from the base station 2. The server 4 stores the image data D1 to Dn in the database 25 by including the image data D1 to Dn in the directory of the ID permitted for authentication. Incidentally, when information such as image data is stored in the server 4 using the digital camera 1 having this ID thereafter, the server 4 executes the authentication processing procedure again, and comprehensively includes the authentication ID directory after the authentication is permitted. Store inside.
[0034]
When the digital camera 1 transmits image data to the server 4, the CPU 11 newly captures the image by the user and transfers the obtained image data to the RAM 12 for updating. At this time, in the shooting number, the CPU 11 assigns from the number next to the last shooting number given before the update.
[0035]
When the digital camera 1 configured as described above determines that the capacity of the RAM 12 is full by the CPU 11, the image data can be transmitted by sequentially accessing the server 4 via the base station 2 and the network 3. Thus, since the capacity of the RAM 12 of the digital camera 1 does not always become full, an image desired by the user can be taken at any time.
[0036]
5 shows the data flow of the image data D1 to Dn in the transmission mode on the network system. The digital camera 1 transmits the image data D1 to Dn to which the additional information is added to the base station 2 and the network 3. To the server 4.
[0037]
On the other hand, when the user wishes to view the image data D1 to Dn stored in the server 4 with the network terminal device 5 installed at hand, for example, the user is provided in the input unit 18 of the digital camera 1 (FIG. 2). By performing a predetermined key operation, the digital camera 1 is caused to generate a network connection request command. The CPU 11 transfers this to the short-range wireless communication unit 16 via the interface 16B. The short-range wireless communication unit 16 modulates the connection request command transferred from the RAM 12 by the infrared communication modulation / demodulation unit 16A to generate an infrared command signal, and transmits this to the network terminal device 5 via the infrared transmission / reception unit 16C. .
[0038]
As shown in FIG. 6, the network terminal device 5 has a configuration in which a CPU 31, a RAM 32, a ROM 33, a flash ROM 34, a display unit 35, a network communication unit 36, and an infrared communication unit 37 are connected to a bus BUS.
[0039]
The CPU 31 controls each circuit unit by executing data processing according to a processing program stored in the ROM 33. The CPU 31 transmits processing contents to the server 4 or the digital camera 1 as necessary.
[0040]
The flash ROM 34 has an area for storing network connection information for connecting the digital camera 1 to the network 3, and a TCP for connecting to the network 3 when a connection request by an infrared signal is received from the digital camera 1. / IP (Transmission Control Protocol / Internet Protocol), PPP (Point to Point Protocol), etc. are registered in advance.
[0041]
Here, since the network connection information includes information that can be transmitted to a specific server 4, the digital camera 1 can transmit the target server 4 from a large number of servers on the network.
[0042]
The network terminal device 5 receives the infrared command signal supplied from the digital camera 1 by the infrared receiving unit 37C of the infrared communication unit 37, and demodulates it by the demodulating unit 37D to extract the connection request command. Based on this connection request command, the CPU 31 connects to the network 3 via the modem 36A. As a result, the CPU 11 switches to the reference mode.
[0043]
In the reference mode, the CPU 11 authenticates whether or not the user who owns the digital camera 1 has the right to use the server 4 by executing the authentication processing procedure shown in FIG. It is made to run.
[0044]
That is, in FIG. 7, the CPU 11 of the digital camera 1 reads the authentication ID from the EEPROM 14 and transfers it to the short-range wireless communication unit 16 via the interface 16B. The short-range wireless communication unit 16 modulates the authentication ID transferred from the EEPROM 14 to generate an authentication ID signal Sid including an infrared signal, and transmits this to the network terminal device 5 via the infrared transmission / reception unit 16C.
[0045]
The network terminal device 5 (FIG. 6) receives the authentication ID signal Sid supplied from the short-range wireless communication unit 16 by the infrared receiving unit 37C of the infrared communication unit 37, and demodulates it by the demodulating unit 37D. And the authentication ID is transferred to the network communication unit 36 via the interface 37E. The network communication unit 36 transmits the authentication ID to the server 4 via the modem 36A and the network 3 sequentially by the modem control unit 36B.
[0046]
The server 4 (FIG. 5) receives the authentication ID supplied from the network communication unit 36 via the communication interface 24, and executes the same authentication process as in the transmission mode described above.
[0047]
If the CPU 21 of the server 4 determines that authentication is permitted, it executes an image providing process. The CPU 21 includes the ID of the ID permitted for authentication from the database 25, reads additional information Dad1 to Dadn added to the stored image data D1 to Dn, and stores them in the server 4 in advance. The image list data Dris is created by performing a predetermined conversion process according to the application software. Then, the server 4 transmits the image list data Dris to the network terminal device 5 via the network 3.
[0048]
The network terminal device 5 (FIG. 6) receives the image list data Dris supplied from the server 4 by the modem 36A of the network receiving unit 36, and transfers it to the display unit 35 via the interface 36C. The display unit 35 performs a predetermined drawing process in accordance with predetermined application software stored in the ROM 33 in advance based on the image list data Dris supplied from the modem 36A by the display processing unit 35B. The image list 40 as shown in FIG. 8 is displayed on the display 35A such as Cathode Ray Tube).
[0049]
That is, in FIG. 8, the image title list 41 divided into a predetermined width is displayed on the display 35A in the downward direction sequentially from the top and the cursor 42 to be inverted is attached to the top of the image title list 41 in FIG. Displayed. The image title list 41 displays the shooting date and time, and the shooting number.
[0050]
Here, as shown in FIGS. 7 and 9, for example, when the user desires to view the third image, the digital camera 1 (FIG. 2) presses the down key 18 </ b> B provided in the input unit 18 twice. As a result, two downward commands Dwcom are generated. Then, the digital camera 1 modulates them by the short-range wireless communication unit 16 to generate a downward command signal Sdwcom composed of an infrared signal and transmits it to the network terminal device 5.
[0051]
The network terminal device (FIG. 6) receives the downward command signal Sdwcom supplied from the digital camera 1 and demodulates it to extract the downward command Dwcom for two commands. In response to these instructions, the CPU 31 moves the cursor 42 downward by two steps. In this way, the user can move the cursor portion 42 according to the pressing operation by pressing the up or down direction key 18A or 18B as many times as desired.
[0052]
Also, here, the digital camera (FIG. 2) 1 generates a determination command Decom by pressing a determination key 18C (FIG. 9) provided in the input unit 18, and modulates this by the short-range wireless communication unit 16. As a result, a determination command signal Sdecom including an infrared signal is generated. The digital camera 1 transmits this determination command signal Sdecom to the network terminal device 5.
[0053]
The network terminal device 5 (FIG. 6) receives the determination command signal Sdecom supplied from the digital camera 1 and demodulates it, thereby extracting the determination command Decom. Here, the CPU 31 of the network terminal device 5 transmits the photographing number “3” for which the cursor part 42 is selected to the server 4.
[0054]
The server 4 (FIG. 5) includes a directory of IDs permitted to be authenticated based on the number supplied from the network terminal device 5, and stores the number “3” in the image data (D1 to Dn) stored therein. The corresponding image data is read out and transmitted to the network terminal device 5.
[0055]
The network terminal device 5 receives the image data supplied from the server 4 and transfers it to the display unit 35. The display unit 35 displays the image on the display 35 </ b> A by performing a drawing process according to the application software stored in the ROM 13 of the network terminal device 5 in the display processing unit 35 </ b> B. Thereby, the user can visually observe the desired image.
[0056]
FIG. 10 shows the data flow of the image list data Dris and the image data D1 to Dn in the reference mode on the network system. The digital camera 1 transmits various access signals to send the network terminal device 5 By controlling, the image list data Dris is read from the server 4 and transmitted to the network terminal device 5. Then, the network terminal device 5 performs a predetermined process on the image list data Dris and then displays it on the display 35A of the display unit 35. Further, the network terminal device 5 transmits the image number selected and determined by the user to the server 4. Then, the server 4 transmits the third image to the network terminal device 5.
[0057]
In the above configuration, the server 4 that stores the image data registers the ID unique to the digital camera for authentication with the server 4 by executing registration processing means for the ID unique to the digital camera 1. Also, ID combination registration of the digital camera 1 and the server 4 is performed with respect to the server 4 via a registration device.
[0058]
When the CPU 11 of the digital camera 1 determines that the capacity of the RAM 13 is full by executing the comparison procedure, the digital camera 1 is switched to the transmission mode by connecting to the server 4 via the base station 2.
[0059]
In the transmission mode, the authentication processing procedure is executed for the authentication ID supplied from the digital camera 1. When receiving authentication permission, the digital camera 1 transmits image data. The server 4 comprehensively stores the image data added with the additional information supplied from the digital camera 1 in the authentication ID directory. This realizes secrecy of image data by a third party.
[0060]
On the other hand, when the CPU 11 of the digital camera 1 generates a network connection request command to the network terminal device 5 and thereby the network terminal device 5 is connected to the network 3, the digital camera 1 is switched to the reference mode. Thereafter, authentication processing is performed with the server 4 via the network terminal device 5.
[0061]
When the authentication ID of the digital camera 1 is registered in the database 25 of the server 4, the CPU 11 includes the directory of the ID permitted for authentication in the transmission mode, reads additional information from the stored image data, and adds this additional information. Based on the information, image list data Dris is created and transmitted to the network terminal device 5. The network terminal device 5 displays the image list 40 on the display 35 </ b> A by drawing the image list data Dris supplied from the server 4. The CPU 11 moves the cursor 42 according to the up / down key operation by the user, so that the user selects an image desired to be displayed from the image list. Further, the digital camera 1 can display an image desired by the user on the display 35 </ b> A of the network terminal device 5 by pressing the enter key by the user.
[0062]
According to the above configuration, when the CPU 11 of the digital camera 1 determines that the capacity of the RAM 12 is full, the CPU 11 automatically uses the public wireless communication line to enter the network 3 based on a state in which public wireless communication is possible. By connecting, a larger amount of image data is transmitted to the server 4. As a result, the capacity of the RAM 12 is always empty. In this way, the user can photograph as many subjects as desired regardless of where the user is.
[0063]
Further, by providing the digital camera 1 with a unique ID and providing the server 4 with an authentication processing means, it is possible to ensure the secrecy of the image taken by the user.
[0064]
The CPU 11 of the digital camera 1 performs infrared transmission that can control the network terminal device 5, thereby displaying an image list 40 created based on the image data stored in the server 4 via the network terminal device 5. To display. Based on this, when a predetermined key operation is performed on the image list 40 desired by the user, the display unit 35 displays the image desired by the user from the image data acquired from the server 4. Thus, the user can view the image stored in the server 4 from a place where the network terminal device 5 having the network connection means and the infrared receiving means is at hand.
[0065]
In the above-described embodiment, the case where the shooting date and time and the shooting number are used as information to be displayed in the image list has been described. However, the present invention is not limited to this, and thumbnails and image information ( (Image size, resolution, etc.) may be displayed. In this way, even if the user forgets what the user has photographed, it is possible to further understand what the user has photographed by viewing the image list.
[0066]
In short, any means that can evoke the memory of the user may be used.
[0067]
In the above-described embodiment, the case where the image data and the additional information are stored in the server 4 has been described. However, the present invention is not limited to this, and the voice input from the microphone 19A of the voice input unit 19 as shown in FIG. Is input, the audio signal So is output from the microphone 19A, and is converted into audio data by the A / D converter 19B. Then, the audio data may be stored in the server 4 by the above-described operation and read from the network terminal device 5.
[0068]
In this case, since the audio data has a large data capacity like the image data, even if the audio data is stored in the server 4, the same effect as described above can be obtained.
[0069]
Furthermore, in the above-described embodiment, the case where the image data obtained from the image captured by the digital camera 1 is stored in the server and read out from the network terminal device 5 has been described. However, the present invention is not limited to this. The user's operation is stored in the server 4 by the above-described operation using GPS (Global Positioning System), and the user's operation trajectory is displayed on the display unit 35 by reading it from the network terminal device 5. Alternatively, even if the temperature sensor is sandwiched between the axilla and the like of the hospitalized patient, the body temperature of the hospitalized patient is stored in the server 4 and read out from the network terminal device 5 by the above-described operation, so The present invention can be widely applied to a network system constituted by other various terminal devices having a public wireless line communication function and an infrared communication function, such as being able to constantly check.
[0070]
Furthermore, in the above-described embodiment, the case where the CPU 11 of the digital camera 1 executes the comparison processing means and the RAM 13 is connected to the network 3 when it is determined that the capacity is full has been described. Not limited to this, the user may connect to the network 3 by performing a predetermined key operation provided in the input unit 18 of the digital camera 1 when necessary by the user.
[0071]
In this case, the CPU 11 executes the comparison processing means, and when the capacity of the RAM 13 is determined to be full, for example, the CPU 11 performs processing such as making the shutter button 6 of the digital camera 1 incapable of being pressed. It is possible to notify that the capacity of the RAM 13 is full.
[0072]
Furthermore, in the above-described embodiment, the case where the registration means for registering the ID for the server 4 in the EEPROM 14 of the digital camera 1 has been described, but the present invention is not limited to this, and the server 4 is stored in the EEPROM 14 of the digital camera 1. And the ID for the network terminal device 5 may be registered in advance.
[0073]
In this case, as shown in FIG. 11, in the state where the digital camera 1 is connected to the network 3 via the base station 2, the digital camera 1 transmits an ID to the first network terminal device 5 and sends back an authentication permission reply. By receiving, connection to the network 3 is started. As a result, confidentiality of image data by a third party can be further realized.
[0074]
【The invention's effect】
  As described above, according to the present invention,The server is accessed using a wireless communication unit capable of wireless communication with the base station, the storage target data is stored in the server, and the server is connected to the server using the wireless communication unit capable of wireless communication directly with the communication partner. On the other hand, a command is transmitted to a display device that can communicate without going through a base station, and the data stored in the server is displayed on the display device, so that more data is stored in the server. These can be provided to the display device.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an entire network system according to the present invention according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a configuration of a digital camera.
FIG. 3 is a sequence chart showing an authentication processing procedure in a photographing mode.
FIG. 4 is a block diagram illustrating a configuration of a server.
FIG. 5 is a block diagram showing a data flow in a transmission mode.
FIG. 6 is a block diagram illustrating a configuration of a network terminal device.
FIG. 7 is a sequence chart showing an authentication processing procedure in a reference mode.
FIG. 8 is a block diagram illustrating a configuration of an image list.
FIG. 9 is a block diagram for explaining how to use an image list;
FIG. 10 is a block diagram showing a data flow in a reference mode.
FIG. 11 is a sequence chart showing an authentication processing procedure (2) in a reference mode.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Digital camera, 2 ... Base station, 3 ... Network, 4 ... Server, 5 ... Network terminal equipment, 10 ... Network system, 11, 21, 31 ... CPU, 12, 32 ... RAM , 22 ... memory, 14 ... EEPROM, 25 ... database.

Claims (4)

A communication system including a display device and a mobile terminal device,
The display device
Communication unit that can communicate with the server without going through the base station
With
The mobile terminal device is
An acquisition unit for acquiring data to be accumulated in the server;
A storage control unit that accesses the server using a wireless communication unit capable of wireless communication with the base station, and stores the data acquired by the acquisition unit in the server;
A display control unit that transmits a command to the display device using a wireless communication unit that can directly communicate with a communication partner, and causes the storage control unit to display data stored in the server on the display device; A data communication system comprising: The acquired data transmission unit
The data acquired by the acquisition unit is accumulated by adding identification information of the data,
The display control unit
Causing the storage control unit to display a list of identification information added to the data stored in the server on the display device, and causing the display device to display data corresponding to the identification information selected from the list. The data communication system according to claim 1, wherein: An acquisition unit for acquiring data to be stored in the server;
A storage control unit that accesses the server using a wireless communication unit capable of wireless communication with a base station, and stores the data acquired by the acquisition unit in the server;
Using a wireless communication unit capable of directly wirelessly communicating with a communication partner, a command is transmitted to the display device capable of communicating without going through the base station to the server, and the storage control unit is transmitted to the display device. Comprising a display control unit for displaying data stored in the server . The acquired data transmission unit
The data acquired by the acquisition unit is accumulated by adding identification information of the data,
The display control unit
Causing the storage control unit to display a list of identification information added to the data stored in the server on the display device, and causing the display device to display data corresponding to the identification information selected from the list. The portable terminal device according to claim 3, wherein

Images