JPH09120369A - Communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a file receiving failure that is caused by the full capacity of a file store device by moving the files to a center device to secure the sufficient idle capacity of the file store device with no user's operation required when the idle capacity of the file store device is reduced. SOLUTION: When the idle capacity of a hard disk device 17 is reduced less than a prescribed level, a communication terminal 2 calls the previously registered ISDN number of a center device and starts the communication in an MLP by means of a prescribed protocol. Then the terminal 2 sends a prescribed number of files to the center device from the device 17 to end the communication and also deletes the sent files out of the device 17. On the other hand, the center device generates a directory name in response to an outgoing number and pairs the directory name with the outgoing number to store them in a terminal identification area included in a RAM. At the same time, a directory of the relevant name is produced in a magneto-optical disk device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device that manages files between a communication terminal equipped with a file storage device and a center device. As the communication terminal according to the present invention, a multimedia communication terminal capable of processing various media data such as still image data, moving image data, and audio data in a file, and a received image data can be stored in a file. In addition, there are a soft copy facsimile apparatus which displays image data on a display by a user operation, a portable data processing terminal having a communication function, and the like.

[0002]

2. Description of the Related Art Conventionally, in a data communication terminal equipped with a file storage device (such as a hard disk device), when the file storage device runs out of free space, the user is notified of this and the user is notified of the necessity of the file. By taking into account the file deletion operation, free space is created in the file storage device. Further, in this case, if the file to be deleted is necessary, the file is deleted after copying it to a recording medium such as a floppy disk.

A portable data processing terminal has a function of communicating with a center device and receiving or transmitting necessary data, but this type of terminal is focused on weight reduction and cost reduction. Therefore, it is difficult to provide a large-capacity file storage device such as a hard disk device that can store many files.

By the way, Japanese Patent Application Laid-Open No. 5-167768 discloses a file management system for remotely controlling file management of facsimile image data stored in a host computer from a telephone.

Further, in Japanese Patent Laid-Open No. 3-18944,
A file management method for saving only files updated after a set date and time is disclosed.

[0006]

As described above, in the data communication terminal equipped with the file storage device, when the file storage device runs out of free space, the user deletes the file while considering the necessity of the file. However, there is a problem that this operation is troublesome.

Further, in the case of a file that needs to be saved, it is necessary to copy it to a recording medium such as a floppy disk before deleting it, which causes a problem that storage management of the recording medium is troublesome.

On the other hand, in a communication terminal such as a video conferencing apparatus which has an answering machine function, and which stores received moving image data and audio data in a file storage device,
When trying to receive the recorded message data when there is no free space in the file storage device, there is a problem that the recorded message cannot be received.

Similarly, the soft copy facsimile apparatus also has a problem that image data cannot be received when an incoming call arrives when there is no free space in the file storage apparatus.

Further, the method disclosed in Japanese Patent Laid-Open No. 3-18944 stores only files updated after the set date and time, so that the storage amount of the files can be controlled. When the number of files to be stored increases, there is a problem that the file storage device runs out of free space.

Further, the system disclosed in Japanese Unexamined Patent Publication No. Hei 5-167768 carries out a file management operation from a telephone, but there is a problem that a desired file transmission request cannot be issued to the host computer to receive the file. there were.

The present invention has been made in order to solve such a problem, and when the free space of the file storage device becomes small, some files can be communicated without requiring user operation. An object of the present invention is to prevent a file reception failure due to the full capacity of the file storage device by moving to the center device and creating a sufficient free space in the file storage device. Another object is to save the labor of copying a file to a recording medium such as a floppy disk and improve the convenience of the apparatus.

It is another object of the present invention to allow a communication terminal to easily reuse a file once moved to the center device.

[0014]

Therefore, according to the invention described in claim 1 of the present application, a communication terminal equipped with a file storage device is connected to the communication terminal via a communication network, and the file storage device is also provided. And a center device having a function of managing files received from the communication terminal, wherein the communication terminal makes a call to the center device when the free space of the file storage device falls below a predetermined value. Then, the files satisfying a predetermined condition in the file storage device are transmitted to the center device, and the files are deleted, and the center device stores the files received from the communication terminal in the file storage device for each communication terminal. It is designed to be saved and managed.

The invention according to claim 2 is connected to a communication terminal equipped with a file storage device and the communication terminal via a communication network, and is equipped with a remote diagnosis function for management. A center device having a function of periodically calling a communication terminal, receiving diagnostic information including free space of a file storage device of the communication terminal, and having a function of managing a file received from the communication terminal by including a file storage device When the center device receives the diagnostic information from the communication terminal, the center device checks the free space of the file storage device included in the diagnostic information, and if this is less than or equal to a predetermined value, requests the file transmission and deletion to the communication terminal. The communication terminal sends a file satisfying a predetermined condition in the file storage device to the center device based on the request from the center device. As well as to remove those files, the center apparatus is stored in the file storage device for each communication terminal the file received from the communication terminal, in which so as to manage.

Further, in the invention described in claim 3, in the communication device according to claim 1 or 2, the communication terminal makes a call to the center device to request file information relating to the own terminal. When the center device receives a file information request from the communication terminal, the center device transmits information about the file received from the communication terminal to the communication terminal, and the communication terminal receives the file information and receives the file information. When the file information is displayed on the display and a specific file is specified from the displayed file information,
The specified file is requested to the center device, and when the center device receives the file request from the communication terminal, the corresponding file stored in the file storage device is transmitted to the communication terminal, and the communication terminal, The file is received from the center device, and the received file is stored again in the file storage device.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

The communication of the present invention is executed in a communication device including a communication terminal and a center device. An example of the configuration of this communication device is shown in FIG. In the figure, 1 is a center device, 2a-
2c is a communication terminal. These devices are ISDN (Inte
grated Services Digital Network) 3.

First, the communication terminal will be described. As a communication terminal of the present invention, a communication conference apparatus that performs multiplex communication of voice data, moving image data, color still image data, telewriting data, document image data, and the like will be described as an example. A system configuration diagram of the communication conference device is shown in FIG.

In the figure, reference numeral 2 denotes a communication conference apparatus of the present embodiment as a communication terminal, which includes a system bus 11, a system control unit 12, a ROM (Read Only Memory) 13, a RAM (Random Access Memory). (Possible memory) 14, encoding / decoding unit 15, hard disk interface (HD I / F) 16, hard disk device 17, communication control unit 18, handset 19, microphone 20, speaker 21, touch panel control unit 22, touch panel 23, LCD display control unit 24, LCD 25, moving image codec 26, television camera 27, CRT control unit 2
8, CRT 29, still image codec 30, document camera 31, scanner interface (I / F) 32, scanner 33, printer interface (I / F) 34,
The printer 35 and the like are provided.

The respective units are connected via the system bus 11, and the system control unit 12 controls the respective units of this apparatus according to the program in the ROM 13. ROM13 is
A RAM 14 that stores a control program of this device, etc.
Stores various data necessary for controlling the apparatus.

The encoding / decoding unit 15 encodes the image data input from the scanner 33 into MH, MR, MMR or the like used in facsimile communication, or decodes the received image data.

The hard disk device 17 is connected to the system bus 11 via the hard disk interface 16 and stores the image data read by the scanner 33 and the received image data.

The communication control unit 18 is connected with a handset 19, a microphone 20, a speaker 21 and the like, and the audio signal A
/ D (Analog / Digital) conversion, D / A (Digital / Analo
g) ITU-T (former CCI) voice codec for conversion
TT) Recommendation (hereinafter simply referred to as recommendation) 221, which includes a multiplexing / separation control unit for various media data, a D channel control unit that executes connection and disconnection of calls using the D channel, an ISDN interface, and the like, and mainly processes the hardware portion of communication control. To do.

The touch panel control section 22 detects a portion on the touch panel 23 where a dedicated pen tip is in contact and fetches the position information. The touch panel 23 is superposed and closely attached to the LCD 25. The LCD display control unit 24 is L
It controls the display screen of the CD 25.

The moving image codec 26 is used by the television camera 2
Analog NTSC (National Televis)
ion System Committee) After A / D conversion of signal, NT
SC / CIF (Common Intermediate Format) conversion
This is recommended H. It is encoded in the format defined by H.261 and passed to the communication control unit 18, and the recommended H.264 standard is applied to the encoded moving image data input from the communication control unit 18. 26
Decode specified in 1 and execute CIF / NTSC
It is converted and further D / A converted and output to the CRT display control unit 28. The television camera 27 outputs the input video information as an NTSC signal.

The CRT display control unit 28 causes the CRT 29 to display the moving image signal input from the moving image codec 26 and the still image signal input from the still image codec 30, and controls the division of the display screen. CRT29 is
It has an NTSC terminal and displays a signal output from the CRT display control unit 28.

The still image codec 30 is a document camera 3
After A / D conversion of the NTSC signal input from 1,
Encoding according to the JPEG (Joint Photographic Expert Group) method is output to the communication control unit 18 or the hard disk device 17, and the encoded still image data input from the communication control unit 18 or the hard disk device 17 is also output. Then, the data is decoded according to the JPEG method, D / A converted, and output to the CRT display control unit 28. The document camera 31 receives the input still image information as N
It is output to the still image codec 30 as a TSC signal.

The scanner 33 is connected to the system bus 11 via the scanner interface 32, and C
Using a CD (Charge Coupled Device), a document is read line by line and output as image data. The printer 35 is connected to the system bus 11 via the printer interface 34, and prints image data page by page on plain paper or the like.

All the operation menus of the apparatus are displayed on the LCD 25, and the operator points to the display area of the menu on the touch panel 23 using a dedicated pen, and the processing according to the menu is executed. Also,
The document image data and the drawing data by telewriting are displayed on the LCD 25.

Next, a method of a communication conference executed between the communication conference devices of this embodiment will be described.

As the communication method used in the conference, voice,
Regarding multiplex communication of moving images and data, Recommendation H.264. 221
And H .; 242 is executed based on 1 of the above data.
The telewriting data, which is one of them, is described in Recommendation H.264. 221 is transmitted by the MLP (Multi Layer Protocol). In addition, the same color still image data as the document image data, which is one of the data, is recommended by H.264. It is transmitted by HSD (High Speed Data) defined in 221.

Transmission / reception of telewriting data using MLP, that is, telewriting communication will be described. The protocol configuration executed by this MLP is shown in FIG. Telewriting communication is OSI from layer 2 (data link layer) to layer 5 (session layer)
In accordance with the reference model of (Open Systems Interconnection), there is a telewriting application including the function of layer 6 (presentation layer) in the upper layer of layer 5.

Transmission and reception of document image data using HSD is carried out by facsimile communication. Transmission and reception of color still image data is carried out by still image communication according to the protocol configuration of FIG. This protocol is
Layers 2 to 5 are based on the OSI reference model, and there is a color still image application including the function of layer 6 in the upper layer of layer 5.

Next, the communication procedure of the conference will be described.

First, when a call is connected using the D channel, Recommendation H.264 is used. Enter the in-channel procedure using 221
Ability BAS (Bit rate Allocation Signal) is exchanged. Here, the other terminal can execute communication using MLP and HSD, and has a transfer rate capability of 2 × 64.
Confirm that it is kbit / s and connect the additional channel. Then, when synchronization with the first channel is achieved, BAS
Move to the mode switching sequence using the command. By this mode switching, both the own terminal and the other terminal,
Audio is 56kbit / s, 7kHz audio, data is MLP-6.4k, and moving image is the remaining capacity (62.4k).
bit / s). Then, the connection for telewriting communication is established by the MLP, and the telewriting communication is ready to be executed.

When the document image data read from the scanner 33 is transmitted to the other terminal, the mode is switched using the BAS command, the moving image is turned off in both terminals, and the HSD channel is set. Then, the document image data is transmitted by performing facsimile communication on this HSD channel. When the transmission of the document image data is completed, the mode is switched using the BAS command,
The HSD channel is released and both terminals turn on the moving image again.

When the color still image input from the document camera 31 is transmitted to the other terminal, the mode is switched using the BAS command, both terminals turn off the moving image and set the HSD channel. And this H
Color still images are transmitted by performing still image communication on the SD channel. When the transmission of the color still image is completed, the mode is switched using the BAS command, the HSD channel is released, and both terminals turn on the moving image again.

In this way, a file consisting of telewriting data, a document image file, a color still image file, etc. are created during the conference.

Further, this communication conference device has an answering machine function, and when an incoming call is received from another communication conference device while the answering machine mode is set, the received voice data and moving image data are recorded. Write in the message file,
An answering message file is created.

The above various files are created and stored in the hard disk device 17.

Next, a center device for managing files received from a plurality of terminals separately for each terminal will be described. A system configuration diagram of the apparatus is shown in FIG.

In the figure, reference numeral 1 is a center device of this embodiment, which includes a system bus 41, a system controller 42, and a ROM 4.
3, RAM 44, magneto-optical disk interface (I
/ F) 45, magneto-optical disk device 46, communication control unit 4
7, touch panel control unit 48, touch panel 49, LC
A D display control unit 50, an LCD 51, a printer interface (I / F) 52, a printer 53 and the like are provided. System bus 41, system control unit 42, ROM 43, R
AM44, touch panel control unit 48, touch panel 4
9, the LCD display controller 50, the LCD 51, the printer interface 52, and the printer 53 are substantially the same as those shown in FIG. The control programs and data stored in the ROM 43 and the RAM 44 are different.

The magneto-optical disk device 46 is connected to the system bus 41 via a magneto-optical disk interface (I / F) 45, and accumulates files received from communication terminals. The communication control unit 47 uses the recommendation H.264. 221, which includes a multiplexing / separation control unit for various media data, a D channel control unit that executes connection and disconnection of calls using the D channel, an ISDN interface, and the like, and mainly processes the hardware portion of communication control. To do.

In the center device 1, the magneto-optical disk device 46 is based on the terminal identifier received from the communication terminal of the other party.
A directory is created inside and the communication terminal and the directory are managed in a one-to-one correspondence. That is, when the received terminal identifier is new, the terminal identifier is set to RA.
The directory is newly stored in M44 and the received files are stored in the directory. If the received terminal identifier is already stored, the received file is stored in the directory corresponding to the terminal identifier. The terminal identifier and the directory name are stored in the RAM 44 as a set.

Next, a method of communicating files and information relating to the files transmitted and received between the communication terminal 2 and the center apparatus 1 will be described. When a call is made from the terminal 2 using the D channel and the call is connected to the center device 1, the recommendation H.264 is established.
After entering the in-channel procedure using 221 and exchanging capabilities, the mode is changed to MLP-62.4k in both directions.
On this MLP, a file and information about the file are transferred using the protocol configuration shown in FIG.

An embodiment of the invention described in claim 1 will be described below. In the present embodiment, the CPU configuring the system control unit 12 on the communication terminal (communication conference device) 2 side executes the program shown in the flowchart of FIG. 7, and the CPU configuring the system control unit 42 on the center device 1 side. Is realized by executing the program shown in the flowchart of FIG.

Now, in the communication terminal 2, as shown in the flowchart of FIG. 7, when the free space of the hard disk device 17 becomes less than a predetermined value, it is registered in advance (RAM 1
The call is made to the ISDN number of the center device 1 (stored in No. 4), and the communication using the protocol shown in FIG. 6 is started on the MLP (yes in judgment 101 → process 102). This M
The communication sequence of the session layer on LP is shown in FIG. "CN (CONNECT) SPDU (SESSION PROTOCOL DAT
A UNIT) ”session user request function, half-duplex function unit, large synchronization function unit, activity management function unit,
Reception capability data exchange Select a function unit, etc. The file name of the file to be transmitted and the directory name in which the file existed are "AS (ACTIVITY STAR
T) SPDU ”is included in the user data PV field for transmission (process 103). If there are multiple files to be transmitted, the second and subsequent files are“ MAP (MAJOR SYNC POIN).
T) SPDU "is included in the user data PV field and transmitted (process 106).

In this way, the hard disk device 17
A predetermined number of files among them are transmitted to the center device 1 (process 103 to process 107), and after the transmission is completed, the communication is terminated (no in decision 105 → process 108), and the transmitted file is deleted from the hard disk device 17. (Process 1
09). There are two methods for selecting the files to be moved to the center device 1, such as a method of selecting a predetermined number in the order of oldest file creation (update) date, a method of selecting a predetermined number in the order of unused period, etc. Select the file that satisfies the condition of, and send and delete.

On the other hand, in the center device 1, as shown in the flowchart of FIG.
s), the calling number in the calling number information element of the call setup message is compared with the ISDN number stored in the terminal identification area of the RAM 44 (process 202). If there is no matching number (No in decision 203), the received calling number is RA
The directory name is generated in association with the number while being copied to the terminal identification area of M44. The directory name is stored in the terminal identification area of the RAM 44 in combination with the calling number (process 204), and the directory with the directory name is stored in the magneto-optical disk device 4 as well.
6 is created (process 205).

When "AS SPDU" is received, a directory having the directory name included in the user data PV field is created under the previously created directory, and the file having the received file name is created in the directory. Create (process 206). Then, the subsequently received file data is stored in the created file (process 207).

When "MAP SPDU" is received after "DT (DATA TRANSFER) SPDU" (yes in decision 208), the directory name and file name included in the user data PV field are used. A file is created by the same method as described above (process 209), and subsequently received file data is stored in the created file (process 210). When the “MAP SPDU” is not received, the communication is ended (No in the determination 208 → Process 2)
12).

FIG. 10 shows an example of the directory structure. In the figure, directory I is created for each terminal in association with its calling number, and directory A, directory B and file a, file b, file c
Is created according to the parameters of "AS SPDU" or "MAP SPDU". The newly created directory name and file name are registered in the file management area of the magneto-optical disk device 46.

On the other hand, at the time of the incoming call, the calling number in the calling number information element of the call setting message is compared with the ISDN number stored in the terminal identifying area of the RAM 44, and if there is a matching number (decision 203). Yes), the directory having the directory name stored in the directory name stored in combination with the number is created with the directory name included in the user data PV field of the received “AS SPDU” or “MAP SPDU”. Then, a file with the received file name is created in that directory, and the file data to be subsequently received is stored in the created file (process 211 → process 207 to process 210). Thereafter, the same processing (determination 208 to processing 212) as described above is performed.

As described above, when the free space of the hard disk device 17 which is the file storage device of the communication terminal 2 becomes small, a predetermined number of files are transferred to the center device 1 by communication without the user's operation. By creating a sufficient free space in the hard disk device 17, the file reception failure due to the full capacity of the hard disk device 17 does not occur. Further, the labor of copying the file to a recording medium such as a floppy disk is saved, and the convenience of the apparatus is improved.

Next, an embodiment of the invention described in claim 3 will be described. In addition to the above-described embodiment, the invention according to claim 3 executes the program shown in the flowchart of FIG. 11 by the CPU configuring the system control unit 12 on the communication terminal 2 side, and the system control unit on the center device 1 side. This is realized by executing the program shown in the flowchart of FIG. 13 by the CPU configuring 42.

First, the operation of the communication terminal 2 will be described with reference to the flowchart of FIG. When the user operates the file information inquiry to the center device 1, the terminal 2 calls the ISDN number of the center device 1 and starts communication using the protocol shown in FIG. 6 on the MLP (decision 3).
01: yes → process 302). FIG. 12 shows the communication sequence of the session layer on the MLP. "CN SP
In the session user request function of DU ", a full-duplex function unit, a large synchronization function unit, an activity management function unit, a reception capability data exchange function unit, etc. are selected.
The directory name and file name are not included in "AS SPDU".

Next, a command for requesting reception of file information is included in the first "DT SPDU" and transmitted (process 303). When a list of directory names and file names is received from the center device 1, the information is
Display in D25 (Yes in determination 304 → processing 30)
5). Note that these files are files that were previously moved from the terminal 2 to the center device 1. here,
When the user selects one or more of the displayed files, those directory names and file names are transmitted together with the file reception request command (decision 30).
No of 6 → Process 307).

Then, in succession, "GT (GIVE TOKENS)
"SPDU" is sent with the large synchronization activity token set in the token item PV field (process 308). Thereafter, the center device 1 sends "MAP S".
PDU "is received and the directory name and the file name are included therein, a file having the received file name is generated in the directory having the directory name (Process 3
09). Then, the subsequently received file data is accumulated in the generated file (process 310). "MA
While receiving P SPDU ", the above processing 309, 310
Is repeatedly executed, and when it is no longer received, the communication is ended (no in step 311 → 312).

On the other hand, in the center device 1, when an incoming call is received, the calling number in the calling number information element of the call setting message is stored in the RAM 44 according to the flowchart of FIG.
Communication using the protocol shown in FIG. 6 is started on P (yes in determination 401 → process 402). The communication sequence of the session layer on this MLP is shown in FIG.

Next, when the "DT SPDU" including the command requesting the reception of the file information is received, the calling number stored previously is compared with the ISDN number stored in the terminal identification area of the RAM 44 (decision 403). Yes → process 404). Then, all directory names and file names existing in the directory having the directory name stored as a pair with the matched number are transmitted to the terminal 2 (process 40).
5).

After that, when a file reception request command accompanied by a directory name and a file name is received (decision 4)
06), and waits for the arrival of the "GT SPDU" (decision 407, no loop). When "GT SPDU" is received, "MAP SPDU" is changed to the user data PV.
The field is transmitted including the directory name and file name of the file to be transmitted first (yes in determination 407 → process 408). Then, when the "MAA SPDU" is received, the file data is transmitted (process 409). When there are two or more requested files, the “MAP SPDU” including the directory name and file name of the next file to be transmitted is transmitted after the transmission of the file data is completed (yes at decision 410 → process 408). . And "MA
When "A SPDU" is received, the file data is transmitted (process 409).

When the transmission of all requested file data is completed, "AE (ACTIVITY END) SPDU" is transmitted and the communication termination procedure is executed (decision 410 no →
Process 411). It should be noted that if the file information reception request command is not received in the above decision 403, another process is executed (no in decision 403 → process 412). Also, the judgment 40
If the file reception request command is not received at 6, the communication is terminated (no in the determination 406 → process 411).

As described above, the center device 1 is configured to transmit the information related to the file received from the communication terminal 2 and the file to the communication terminal 2 in response to the request from the arbitrary terminal 2 under management. , The communication terminal 2
Since the file specified by the user can be received from the center apparatus 1 among the files moved to the center apparatus 1,
In the communication terminal 2, the file once moved to the center device 1 can be easily reused, and the convenience of the device is further improved.

Next, an embodiment of the invention according to claim 2 using the remote diagnosis function will be described. Claim 2
The invention described is the system control unit 42 on the side of the center apparatus 1.
This is realized by executing the program shown in the flowcharts of FIGS. 14 and 15 by the CPU constituting the above, and executing the program shown by the flowchart of FIG. 18 by the CPU constituting the system control unit 12 on the communication terminal 2 side.

The center device 1 includes several communication terminals 2
Is managed, and calls are periodically made to those terminals 2 to collect diagnostic information of the terminals 2. This diagnostic information includes error logging data that is a history of terminal error information (hardware error, software error, etc.), free space in the hard disk device 17, and the like. Here, when the free space of the hard disk device 17, which is one of the received diagnostic information, is less than or equal to a predetermined value, a request to move a predetermined number of files to the center device 1 is issued, and the terminal 2 follows a predetermined request. A number of files are transmitted to the center device 1, and the transmitted files are deleted. This operation is performed by the center device 1
Will be described separately for the terminal 2.

As shown in the flow charts of FIGS. 14 and 15, the center device 1 calls the terminal 2 under its control at a certain fixed date and time, for example, midnight at the end of the month, and the MPL
The communication using the protocol shown in FIG. 16 is started, and the calling number (the ISDN number of the destination) is stored in the RAM 44 (yes of determination 501 in FIG. 14 → process 502 → process 50).
3).

FIG. 17 shows the communication sequence of the session layer on this MLP. In the session user request function of "CN SPDU", a full-duplex function unit, a large synchronization function unit, an activity management function unit, a reception capability data exchange function unit, etc. are selected. Then, the diagnostic information reception request command is sent in the first "DT SPDU" (process 504). When the diagnostic information from the terminal is received, it is checked whether the free space of the hard disk device 17, which is one of the information, is equal to or less than a predetermined value (determination 505: yes →
Process 506 → decision 507). If it is not less than or equal to the predetermined value, the communication is ended (No in judgment 507 → process 508). if,
If it is less than the predetermined value, a request command to move a predetermined number of files to the center device 1 is transmitted (Yes in judgment 507 → process 509). This is followed by "GT SPD
U ”is sent with the large synchronization activity token set in the token item PV field (process 51).
0).

Then, it is checked whether or not there is a directory corresponding to the previously stored calling number. If there is no directory, a directory name is generated in association with the calling number, and this calling number and directory name are stored in the terminal identification area of the RAM 44. (No in the determination 511 in FIG. 15 → process 512). And
A directory having the generated directory name is created in the magneto-optical disk device 46 (process 513).

After that, from the terminal 2, "MAP SPDU"
Is received, and since it contains a directory name and a file name, a file with the received file name is generated in the directory with that directory name (yes in decision 514 → process 515). Then, the subsequently received file data is accumulated in the generated file (Process 5).
16). The above processes 515 and 516 are repeatedly executed while the “MAP SPDU” is received, and when the reception is stopped,
The communication is ended (No in the determination 517 → process 518). The directory with the directory name in “MAP SPDU” is created in the directory created for each terminal.

On the other hand, as shown in the flowchart of FIG. 18, the terminal 2 receives the ML from the center device 1 when it receives an incoming call.
The communication using the protocol shown in FIG. 16 is started on P (yes in determination 601 → process 602).

The communication sequence of the session layer on this MLP is shown in FIG. When the diagnostic information reception request command is received by the "DT SPDU", the diagnostic information such as error logging data and the free space of the hard disk device 17 is transmitted (determination 603: yes → process 60).
5). Then, when the file move request command is received (Yes in the determination 606), “GT SPDU”
Waits for (no loop of decision 608). "GT S
When "PDU SPDU" is received, "MAP SPDU" is transmitted in the user data PV field including the directory name and file name of the first file to be transmitted (decision 60).
8 => process 609). And "MAA SPD
When "U" is received, the file data is transmitted (process 6).
10). While there is a file to be transmitted next (Yes in determination 611), the above processing 609 and 610 are repeated.

In this way, when the transmission of the predetermined number of file data is completed, "AE SPDU" is transmitted and the communication termination procedure is executed (no in judgment 611 → process 61).
2). Then, the transmitted file is deleted from the hard disk device 17 (process 613).

As described above, by effectively using the remote diagnosis function, the center device 1 automatically checks the free space of the hard disk device 17, which is the file storage device of the communication terminal 2, and moves the file if it is small. By doing so, a sufficient free space is created in the hard disk device 17, so that file reception failure due to the full capacity of the hard disk device 17 does not occur. Further, the labor of copying the file to a recording medium such as a floppy disk is saved, and the convenience of the apparatus is improved.

The embodiment of the invention described in claim 3 can be similarly applied to the embodiment of the invention described in claim 2, and the same action and effect can be obtained in that case as well. .

In each of the above embodiments, the hard disk device 17 which is the file storage device of the communication terminal 2 is used.
When the free space of the hard disk device 17 becomes less than or equal to a predetermined value, the files up to a predetermined number are transmitted to the center device 1 to be deleted. The file may be deleted by deleting the file, and the condition of the file to be transmitted to the center apparatus 1 and deleted may be set according to the system to which the present invention is applied.

In each of the above embodiments, the case where the present invention is applied to the system using the communication conference device as a communication terminal has been described, but the present invention can be applied to the above-mentioned soft copy facsimile device, portable data processing terminal and the like. The present invention is effective because the file capacity is increased because the communication conference apparatus handles images and voices and the soft copy facsimile apparatus handles images. Further, in the case of a portable data processing terminal, it is difficult to provide a large-capacity file storage device such as a hard disk device, so the present invention is effective.

[0078]

As described above, according to the invention of claim 1 of the present application, a communication terminal equipped with a file storage device,
The communication terminal is connected to the communication terminal through a communication network and includes a center device having a file storage device and having a function of managing files received from the communication terminal. When the capacity becomes less than or equal to a predetermined value, a call is made to the center device, files that satisfy a predetermined condition in the file storage device are transmitted to the center device, and those files are deleted. Since the files received from are stored and managed in the file storage device for each communication terminal, when the free space of the file storage device in the communication terminal becomes low, some operations are required without user operation. A file can be moved to the center device by communication, and sufficient free space can be created in the file storage device. Therefore, there is an effect that it is possible to prevent the file reception failure due to the full capacity of the file storage device. Further, there is an effect that the labor of copying the file to a recording medium such as a floppy disk can be saved and the convenience of the apparatus can be improved.

According to the second aspect of the invention, a communication terminal equipped with a file storage device is connected to the communication terminal via a communication network, and a remote diagnostic function is provided for management. A center device having a function of periodically calling a communication terminal that is present, receiving diagnostic information including free space of a file storage device of the communication terminal, and having a function of managing a file received from the communication terminal by including the file storage device When the center device receives the diagnostic information from the communication terminal, the center device checks the free space of the file storage device included in the diagnostic information, and if this is less than or equal to a predetermined value, requests the file transmission and deletion to the communication terminal. In response to the request from the center device, the communication terminal sends a file satisfying a predetermined condition in the file storage device to the center device. , These files are deleted, and the center device saves the file received from the communication terminal in the file storage device for each communication terminal and manages it. Automatically check the free space of the file storage device of the communication terminal,
If it is small, the file can be moved to make sufficient free space in the file storage device. Therefore,
It is possible to prevent the file reception failure due to the full capacity of the file storage device from occurring and to save the labor of copying the file to a recording medium such as a floppy disk, thereby improving the convenience of the device.

Further, according to the invention described in claim 3, in the communication device according to claim 1 or 2,
The communication terminal makes a call to the center device to request the file information related to the self terminal, and when the center device receives the file information request from the communication terminal, the center device receives the information about the file received from the communication terminal. When receiving the file information, the communication terminal displays the received file information on the display unit, and when a specific file is designated from the displayed file information, the designated file is transmitted to the center device. When the center device receives the file request from the communication terminal, the center device transmits the corresponding file stored in the file storage device to the communication terminal, and the communication terminal receives and receives the file from the center device. Since the file is stored again in the file storage device, the same effect as that of the above-described claim 1 or 2 can be obtained. Since the file specified by the user can be received from the center device out of the files moved to the center device, the file once moved can be easily reused in the communication terminal, and the convenience of the device is further improved. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration example of a communication device according to the present application.

FIG. 2 is a system configuration diagram of a communication conference device that is an embodiment of a communication terminal in the communication device.

FIG. 3 is a diagram showing a protocol configuration in telewriting communication in the embodiment.

FIG. 4 is a diagram showing a protocol configuration in color still image communication in the embodiment.

FIG. 5 is a system configuration diagram showing an embodiment of a center device in the communication device.

FIG. 6 is a diagram showing a protocol configuration in communication of a file and its related information in the above embodiment.

FIG. 7 is a diagram showing an operation flow of the communication terminal according to the embodiment of the invention described in claim 1;

FIG. 8 is a diagram showing a sequence example of a session layer of file transfer in the above embodiment.

FIG. 9 is a diagram showing an operation flow of the center device according to the embodiment of the invention described in claim 1;

FIG. 10 is a diagram showing a directory configuration example of files managed by the center device in the embodiment.

FIG. 11 is a diagram showing an operation flow of the communication terminal according to the embodiment of the invention described in claim 3;

FIG. 12 is a diagram showing a sequence example of a session layer of file information transfer and file transfer in the above embodiment.

FIG. 13 is a diagram showing an operation flow of the center apparatus in the embodiment of the invention as set forth in claim 3;

FIG. 14 is a diagram showing a first half part of an operation flow of the center apparatus according to the embodiment of the invention as set forth in claim 2;

FIG. 15 is a diagram showing the latter half of the operation flow of the center device according to the second embodiment of the invention.

FIG. 16 is a diagram showing a protocol configuration of remote diagnosis and file transfer in the above embodiment.

FIG. 17 is a diagram showing a sequence example of a session layer for transferring diagnostic information and a file transfer in the above embodiment.

FIG. 18 is a diagram showing an operation flow of the communication terminal according to the embodiment of the invention described in claim 2;

[Explanation of symbols]

 1 Center device 2a to 2c Communication terminal 2 Communication conference device (communication terminal) 3 ISDN (communication network) 11,41 System bus 12,42 System control unit 13,43 ROM 14,44 RAM 15 Encoding / decoding unit 17 Hard disk Device 18,47 Communication control unit 22,48 Touch panel control unit 23,49 Touch panel 24,50 LCD control unit 25,51 LCD 26 Moving image codec 27 Television camera 28 CRT display control unit 29 CRT 30 Still image codec 31 Document camera 33 Scanner 35, 53 printer 46 magneto-optical disk device

Claims (3)

[Claims] 1. A communication terminal having a file storage device, a center connected to the communication terminal via a communication network, and having a function of managing a file received from the communication terminal having the file storage device. When the free space of the file storage device becomes less than or equal to a predetermined value, the communication terminal calls the center device,
While transmitting files satisfying a predetermined condition in the file storage device to the center device, delete those files, the center device stores the file received from the communication terminal in the file storage device for each communication terminal, A communication device characterized by managing. 2. A communication terminal equipped with a file storage device, connected to the communication terminal via a communication network, and equipped with a remote diagnosis function to periodically call a communication terminal under management. A center device having a function of receiving diagnostic information including free space of a file storage device of a communication terminal and managing a file received from the communication terminal by including a file storage device, wherein the center device comprises When the diagnostic information is received from the communication terminal, the free space of the file storage device included in the diagnostic information is checked, and if this is less than or equal to a predetermined value, a request for transmission and deletion of files is made to the communication terminal, and the communication terminal is On the basis of a request from the center device, a file satisfying a predetermined condition in the file storage device is transmitted to the center device and those files are also transmitted. Remove the Le, the center apparatus, the save the file received from the communication terminal to a file storage device for each communication terminal, communication apparatus, characterized in that it manages. 3. The communication device according to claim 1, wherein the communication terminal calls the center device to request file information related to the own terminal, and the center device communicates with the communication device. When receiving the file information request from the terminal, transmits information about the file received from the communication terminal to the communication terminal, the communication terminal, when receiving the file information, displays the received file information on the display unit, When a specific file is designated from the displayed file information, the designated file is requested to the center device, and when the center device receives a file request from the communication terminal, the center device saves the file in the file storage device. Yes, the corresponding file is transmitted to the communication terminal, and the communication terminal receives the file from the center device, and again receives the received file. Communication apparatus characterized by accumulating the yl storage device.