JP3500369B2 - Communication control device and communication control method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication control device and a communication control method between a plurality of communication terminals.

[0002]

2. Description of the Related Art In recent years, due to the progress of hardware technology, even small computers such as notebook and sub-notebook computers have a sufficient processing capacity, and such small computers are also accommodated in a computer network. Therefore, it has been used for executing various distributed applications. One of the characteristics of this notebook computer is that it is more portable than a desktop computer.

As a network system suitable for such a highly portable device, the applicant of the present invention is capable of establishing a communication connection by each computer autonomously recognizing a computer capable of communicating with itself. Therefore, a communication control method has been proposed in which a troublesome network setting procedure is unnecessary even if a computer moves (Japanese Patent Application No. 6-75757).
issue).

On the other hand, in a portable computer, how to reduce power consumption is a problem, and it is necessary to turn off the power source frequently. Therefore, many models have a resume function.

The "resume function" stores the execution state when the power is turned off so that when the power is turned on again, the same operation as when the power was turned off can be resumed and restarting is facilitated. It is for doing.

This resume function does not cause a problem when the computer is used alone. However, when one device is in the resume state while connecting to the network and communicating, the other computer recognizes that communication is impossible and disconnects the communication connection. Occurs.

Even when the above communication control method is used, the response is lost, and it is determined that the device no longer exists, and even if the power is turned on again, the operation is performed from the same state. I can't restart.

[0008]

As described above, when communication is performed using an information processing device such as a portable computer, the computer that is not resumed when the resume function is used is in the resume state. However, there is a problem that the communication connection is unilaterally disconnected because it is determined that communication is impossible.

The present invention has been made in view of the above problems, and is for enabling the operation after the power is turned on to be resumed without any problem even when the execution is temporarily interrupted by the resume. Is.

[0010]

The communication control device of the present invention is a resume capable of communicating with each other via a radio channel.
A communication control device provided in each of a plurality of communication terminals having a function, in which the communication control device is in a resume state,
Also, when the resume state detecting means detects that the resume state is restored, and when the resume state detecting means detects that the resume state is established, the resume state detecting means detects that the resume state is present to another communication terminal in communication. When the resume state notifying means for notifying and the resume state detecting means detects the return from the resume state, the resume state return notifying means for notifying the other communication terminal of the return and the resume from the other communication terminal When notified that the status has been reached, a communication interrupting means that interrupts communication with the communication terminal, and when notified of the recovery from the resume state from the communication terminal, the interrupted communication is restarted. Communication restart means and own communication terminal
Information about the configuration status of the network between
Network configuration information that collects network configuration information
The information collecting means and the collected network configuration information are recorded.
Network configuration information storage means to remember and self
When returning from the resumed state, the network configuration information
The network configuration information newly collected by the information collection means
The self in the network configuration information storage means
Network configuration information that was stored when the
If they match, the recovery operation is completed, and then the network
Network configuration stored in the network configuration information storage means
Network configuration information means for updating information .

The communication control device of the present invention will be described.

The resume state detecting means detects that the self state is in the resume state and that the self state is restored from the resume state.

When the resume state detecting means detects that the resume state detecting means is in the resume state, the resume state notifying means informs at least other communication terminals that the resume state is in the resume state.

When the resume state detecting means detects that the resume state has returned from the resume state, the resume state return notifying means notifies the return.

When the communication suspending means is notified by another communication terminal that the resume state has been reached, the communication suspending means suspends communication with the communication terminal.

The communication resuming means restarts the interrupted communication when notified of the recovery from the resume state from another communication terminal. Also, network configuration information
The collection means is a network between its own communication terminal and other communication terminals.
Network configuration information, which is information about the configuration status of the work
collect. The network configuration information storage means uses the collection
The created network configuration information is stored. Network
The configuration information means has recovered from the resume state.
Sometimes the network configuration information collecting means newly collects
The network configuration information is the network configuration information
Memorize when the self in the storage means enters the resume state
The recovery operation ends if the specified network configuration information matches.
After that, the network configuration information storage means is recorded.
Update the remembered network configuration information.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows each embodiment of the present invention.
It will be described with reference to FIGS.

(Embodiment 1) FIG. 12 shows a configuration example of an information processing apparatus 400 according to the first embodiment. The information processing apparatus 400 can establish communication by setting a communication connection for transmitting and receiving data mutually between a plurality of computers brought in at an arbitrary place.

The application processing section 401 is a section for executing an application, and the communication control section 402 is a section for performing communication control.

The radio transmitter / receiver 403 is a communication controller 402.
This is a part that performs various processes for wirelessly transmitting and receiving various control information and user information generated from the.

From the application processing unit 401 to the communication control unit 402, the transmission user information is sent to the destination header generation unit 3
12, the group setting command and the group designation information are input to the group setting unit 313.

On the other hand, from the communication control unit 402 to the application processing unit 401, the information of the communicable device is input from the communicable device information storage unit 315, and the destination header identifying unit 317 through the connection identifying unit 318. Receive connection information is input.

The device identification information generator 311 periodically generates its own device identification signal and outputs it to the multiplexing circuit 323 via the control channel modulator 321. The transmission user information is input from the application processing unit 401 to the destination header generation unit 312.

At the same time, from the application processing section 401, connection specification information for specifying the communication connection for transmitting the information is input to the connection setting section 319.

The connection setting section 319 outputs the connection identification information to the destination header generation section 312 based on the accepted connection specification information and the group specification information to the group setting section 313.

The group setting unit 313 outputs the identification information of the partner communication device belonging to the group to the destination header generation unit 312 based on the received group designation information.

The destination header generation unit 312 adds the connection identification information and the identification information of the partner device to the transmission user information as a destination header, and outputs it to the information channel modulation unit 322. The information channel for transmitting information and the control channel for transmitting a control signal are channel-separated by, for example, frequency division, and the information channel modulator 322 and the control channel modulator 321 perform modulation according to each channel. .

The signals output from the information channel modulator 322 and the control channel modulator 321 are multiplexed by the multiplexing circuit 32.
3 is multiplexed by the antenna 3 via the RF modulator 324.
Sent from 31.

On the other hand, various information signals received from the other station from the antenna 331 are converted into a base band band by the reduction unit 326 and then guided to a control channel demodulation unit 328 and an information channel demodulation unit 329, respectively. Control information and user information are demodulated.

In the user information signal output from the information channel demodulation unit 329, the destination header identifying unit 317 searches for the destination header added to the user information, and whether the received information is addressed to the own station or not. To be identified. When addressed to the own station, the received user information is stored in the application processing unit 401.
, And discard if not addressed to your own station.

As described above, the device identification number of the own station is transmitted and the user information is transmitted / received between the devices to which the group is set.

In the figure, the group setting is made as follows.

As described above, the device identification information generator 311
The device identification signal generated from the antenna is periodically transmitted from the antenna 331 via the wireless transmission / reception unit 403.

On the other hand, the device identification information transmitted from another device is guided to the control channel demodulation unit 328 via the wireless transmission / reception unit 403.

From the control channel demodulation unit 328, the device identification information obtained by performing the predetermined demodulation is output to the communicable device identification unit 314.

The communicable device identifying section 314 can communicate with this communication device when the received control information includes the device identifying information and when this signal is repeatedly received within a certain period of time. Then, the device identification information is output to the comparison circuit 316 and the communicable device storage unit 315.

The comparison circuit 316 includes a communicable device identifying section 3
The signal input from 14 is compared with the device identification information stored in the communicable device storage unit 315, and a control signal is output to the communicable device storage unit 315 according to the comparison result.

When the comparison results are in agreement, it is not necessary to rewrite the contents of the communicable device storage unit 315.
No control signal is sent from the comparison circuit 316 to the communicable device storage unit 315. On the other hand, when the comparison result does not match, the content of the communicable device storage unit 315 is updated.

As described above, when the information processing apparatus comes close to and the radio waves transmitted to each other are received with the electric field strength higher than a certain level, the apparatus identification information which is periodically transmitted is received. Then, the device identification information is newly added to the communicable device storage unit 315.

The contents of the communicable device storage unit 315 are also guided to the application processing unit 401 and the group setting unit 313. The application processing unit 401 selects one or a plurality of parties with whom communication is desired from the communicable devices indicated by the communicable device storage unit 315, and outputs a setting command signal to the group setting unit 313.

The group setting unit 313 creates and holds a correspondence table between the device identification information indicated by the communicable device storage unit 315 and the group to be set according to the setting command signal. Thus, a logical communication link is set up between the information processing devices belonging to the group.

The communicable device identifying unit 314 also observes whether or not the identification information of the information processing device stored in the communicable device storing unit 315 is periodically transmitted, and during the predetermined time, the communication terminal is completely transmitted. When the identification information is not received, it is determined that communication is impossible, and the device is removed from the communicable device storage unit 315. The device identification information of the device determined to be incommunicable is also sent to the group setting unit 313, and if necessary, the device identification information of the device is deleted from the correspondence table of the group and the device identification information held by the group setting unit 313. To be done.

When the group is set, the connection is set next.

The application processing unit 401 selects a group set by the group setting unit 313 and sends a connection setting command signal to the connection setting unit 319. The connection setting unit 319 creates and holds a correspondence table of group identification information and connection identification information according to this connection setting instruction.

When the application processing unit 401 transmits data, as described above, the transmission user information is output to the destination header generation unit 312, and a signal designating a group indicating the transmission partner is sent to the group setting unit 31.
3 and the user information is sent to only the communication terminals belonging to the group in a broadcast manner.

Further, the information processing device 400 has a resume control section 404.

The resume control unit 404 monitors whether the power of the information processing apparatus 400 is turned on or off, and when it detects that the power is turned off, the application processing unit 401.
And the status information of the communication control unit 402, the program being executed in the application processing unit 401 and the contents of its register, and the communication control unit 402 in the communication control unit 402 the list of communicable devices and the group setting unit 3.
After saving the information about the group stored in 13 and the information about the established connection stored in the connection setting unit 319 to the secondary storage device 405, the application processing unit 401 and the communication control unit 402.
Turn off the power to stop the operation.

When the resume control section 404 detects that the power is turned on, the resume control section 404 rereads the status information saved in the secondary storage device 405, and the user information section 40.
1. Load the communication control unit 402 to restart the operation. However, in the figure, control lines used for reading or loading the state information from the communication control unit 402 are omitted because the figure becomes complicated.

In the present embodiment, the resume controller 4
When 04 detects that the power is turned off, it sends a resume message to notify the information processing device stored in the communicable device storage unit 315 that the device is in the resume state, and then 2 Next storage device 40
Information necessary for returning from the resume state is saved in step 5 and the power is turned off. At this time, the resume message may simply be broadcast to the network. Alternatively, it may be selectively transmitted only to the information processing apparatuses that belong to the same group as itself.

On the other hand, when the resume message is received, the group setting unit 313 and the connection setting unit 319 are searched for the group to which the device that has transmitted the resume message belongs and the communication connection set for the group. And register that it is resumed.

Therefore, in the group setting section 313,
As shown in FIG. 13, a table that holds a group identifier, a list of information processing devices belonging to the group, and a flag that is set to 1 when resuming is held.

In the example shown in FIG. 13, since the device 7 is in the resume mode, the flags indicating the resume mode are set in the groups 1 and 10. When the flag indicating that the device is resumed is set to 1, the group configuration is not changed even when the communicable device identification unit 314 notifies that the device has become incommunicable.

Similarly, the communication connection setting unit 319 holds a table composed of a connection identifier and a flag which is set when the group to which the connection is set is resumed.

When the user information is transmitted from the application processing unit 401, the connection setting unit checks whether or not the group for which the connection is set is resumed, and if it is resumed, the user information is transmitted. Absent. Further, while the resume is in progress, processing such as disconnection is not performed for this connection even if a timeout is detected.

Next, the processing when the information processing apparatus 400 in the resume state is turned on again to recover from the resume state will be described.

When the resume control section 404 detects that the resume state has been restored, the resume control section 404 transmits a resume return message to another information processing apparatus.

The information processing apparatus which has received the resume recovery message clears the flag set to resume in the group setting unit 313 and the connection setting unit 319 to 0, and transmits the user information from the application processing unit 401. Resume.

The above procedure is shown in FIG.

FIG. 14 shows a case where the information processing apparatuses A, B, and C are communicating with each other, the information processing apparatus B enters the resume state during the communication, and then the information processing apparatus B recovers from the resume state.

In this way, by notifying other information processing devices at the start and end of the resume and interrupting the communication connection, even when the resume state is restored, the state before the resume state and the state before the resume state are continued. Then, it becomes possible to communicate.

(Second Embodiment) A second embodiment will be described.

FIG. 15 is a flow chart showing the procedure for updating the list of communicable devices in the communicable terminal storage unit 315 of this embodiment.

When the resume controller 404 detects that the resume state has been restored, the communicable device storage 3
Notify 15 of the return from the resume state.

In the communicable device storage unit 315, when notified of the return from the resume state, a flag indicating that the return operation is in progress is set.

When the flag is not set (return action
If the comparison result of the comparison circuit 316 does not match, the communicable device storage unit 315 updates the held list of communicable devices by the input from the communicable device identification unit 314.

However, when the flag is set
During (recovery operation in progress) , the communicable device storage unit 315 ignores the output of the communicable device identifying unit 314 even if the comparison result of the comparison circuit 316 does not match. When the flag is set (during the recovery operation) and the comparison result of the comparison circuit 316 matches, the flag is cleared and the recovery operation from the resume state is completed.

By the operation of the communicable device storage unit 315 in this way, the return from the resume state is not completely simultaneous, and the information processing apparatus that has returned from the resume state first is still in the resume state. It is avoided that the communication connection with the information processing apparatus is disconnected when it is determined that the communication is impossible. As a result, even when the recovery time from the resume state differs depending on the device, it is possible to realize continuous communication before and after the resume state.

(Embodiment 3) A third embodiment will be described.

In the present embodiment, the resume controller 4
When 04 detects that it is in the resume state, only the state information of the application processing unit 401 is saved in the secondary storage device 405, and then the power supply is stopped.

For the communication control unit 402 and the wireless transmission / reception unit 403, the power is not stopped, and even in the resume state, it is in the reception waiting state capable of receiving the resume return message and performing the necessary processing. .

When the resume control unit 404 detects the return from the resume state, the resume control unit 404 transmits a resume return message in order to notify another information processing apparatus of the return from the resume state.

On the other hand, when the resume control unit 404 determines that the message received in the resume state is the resume return message, the user information processing unit loads the state information saved in the secondary storage device 405,
Resume execution.

By doing so, it becomes possible to synchronize the timings at which all the information processing apparatuses return from the resume state, so that when the operation is resumed, the other information processing apparatuses are still in the resume state. Therefore, it is possible to perform a continuous operation before and after the resume state, without disconnecting the communication connection due to the determination that communication is impossible.

<First Reference Invention> The first to third reference inventions will be described for reference although they are different from the inventions described in the claims.

First, an outline of a reference example of the first reference invention will be described with reference to FIG.

The communication partner identifying unit 1 identifies a device that can directly communicate with the own device by exchanging information reflecting the state of the communication path owned by each device.

Based on the information, the communication information control unit 2 communicates from the communication partner specifying unit 1 when it is judged that the communication partner cannot communicate with the information actually transferred by the user. Upon receiving the partner extinction signal, communication with the communication partner is stopped, and necessary control information is cleared.

The communication information storage unit 3 sends the transfer information to the communication partner under the control of the communication information control unit 2.

The wireless communication processing unit 4 converts the control information exchanged between the communication partner specifying units 1 of the respective devices and the transfer information from the user into a signal capable of wireless communication.

Further, when the user information cannot communicate due to an abnormality in the communication partner, the communication information control unit 2 clears the transfer control information in its own control unit, and informs the communication partner specifying unit 1 of the transfer control information. And sends an instruction to delete the device from the group of communicable devices.

Further, when the communication information control unit 2 receives an instruction to delete a device from the group of communicable devices, the communication partner identification unit 1 compares it with the information held in the self identification unit 1. A decision is made to delete, and if so, the device is deleted from the device list of the group of communicable devices.

In this case, the control information exchanged between the communication partner specifying units 1 of the respective devices and the transfer information from the user are input to the wireless communication processing unit 4 and sent to the partner, but they are for the same wireless communication. In the same radio channel such as a frequency, the data is multiplexed in a time division manner, or a packet header is provided with a field indicating the type of information for identification. Also, control information and user transfer information can be separated and communicated at a radio channel level such as another frequency.

Thus, the means for controlling the transfer of the user information effectively utilizes the information from the processing section for identifying the communicable device, thereby promptly establishing a reliable communication session for the incommunicable device. Cut into pieces. Also in the case of broadcast communication, by receiving the communication partner extinction signal, it becomes possible to promptly disrupt the communication session or delete the device from the broadcast destination. Further, when the transfer of the user information fails, the information is reflected in the processing unit for identifying the communicable device, so that unnecessary transmission to the incommunicable device can be avoided.

Reference Example 1 A first reference example of the present invention will be described with reference to the drawings.

FIG. 2 shows an example of the configuration of the communication control device according to this reference example.

This communication control device is provided with a communication partner limiting unit 11
The communication information control unit 12 and the communication information storage unit 13 are provided.

The communication partner identifying unit 11 exchanges information of the communicable device held by itself with each device, or based on the information of the communicable device of each device obtained from each device. Perform processing to select devices that can communicate. A concrete example of the inside of the communication partner identifying unit 11 has the configuration shown in FIG.

The communication partner specifying unit 11 of FIG. 3 includes a self device information management unit 111, a collected information management unit 112, and a communication partner limiting unit 113.

The own device information management section 111 has a function of processing, managing, storing, and distributing information based on its own communication device to other communication devices.

The collected information management unit 112 has a function of processing, managing, storing, and distributing to other communication devices information based on that device and information collected by that device received from other communication devices.

The communication partner limiting unit 113 limits the device group that can communicate with the own device based on the information stored in the own device information managing unit 111 and the collected information managing unit 112, and manages and stores the information. Has a function to distribute to communication devices.

When the information based on the communication device of the device is received from another communication device, the own device information management unit 111 receives the device person's name, manages and stores it as the device person's information, and manages the collected information. The unit 112 updates the collected information managed and stored by the own management unit with the information based on the received communication device and the information collected by the device, and manages and stores the information.

Each time the collection information in the collection information management unit 112 is updated, the communication partner limiting unit 113 causes the own device information management unit 1
11, based on the device person information and the collected information stored in each of the collection information management unit 112, the communication devices that can communicate with the own communication device are limited, the list is stored as the device limitation information, and other communication devices Distribute to.

When the information is updated, the user and the communication information control unit 12 are notified based on the content.

FIG. 4 shows an example of an information table managed and stored by each unit.

An example of storing information based on a communication device of the device, and reception attribute information of the device such as a physical identifier and a transmission error rate of the communication device that transmitted the information collected by the device, in the device information management table Is shown.

In the collected information management table, from the information based on the communication device of the device and the information collected by the device, information possessed by each device such as a device list which can be communicated by the device in the physical identifier unit of the sender. Shows an example of storing.

The device limitation information management table shows an example in which the device group list limited by the communication partner limitation unit 113 and the attribute information for communicating with each device are stored.

When transferring information, for example, the user sends it to the partner listed in the device information management table, and when it broadcasts to a group, it sends it to the partner listed in the device limited information management table. To send.

The communication information control unit 12 performs reliable communication processing in order to reliably transfer the transfer information transmitted by the user to the communication partner.

Specifically, it confirms the transmission and reception of information with the communication partner, and manages the storage location of the waiting information stored in the communication information storage section 13. When the extinction signal of the currently communicating partner is received from the communication partner identifying unit 11, the information stored in the communication information control unit 12 and the communication information storage unit 13 for the device is cleared.

The communication information storage unit 13 has a function of storing transfer information from the user in accordance with an instruction from the communication information control unit 12 and sending it to the communication network.

When the user communicates information to a desired partner, the communication partner specifying unit 11 receives whether or not the user or the partner group can communicate.

If communication is possible, the identifier for the other party is received, and this is set as additional information in the transfer information and sent to the communication information control unit 12 and the communication information storage unit 13.

Communication information control unit 1 which has received user transfer information
2 receives the information of the identifier and sends a control signal to the communication information storage unit 13 to control the connection to the other party.

Specifically, if the transfer information can be sent immediately, it is sent to the network, and if it is temporary standby, the storage location in the communication information storage unit 13 is instructed. If the information on standby can be transmitted, the information is transmitted from the communication information storage unit 13 to the network according to the instruction from the communication information control unit 12.

Here, when the communication partner identifying unit 11 determines that the device that was able to communicate becomes impossible as a result of processing the information exchanged and held in its own limiting unit, it sends the information to the communication partner disappearance signal. Is transferred to the communication information control unit 12.

Upon receiving the communication partner disappearance signal, the communication information control unit 12 transfers the control information of the connection to the partner and the connection stored in the communication information storage unit 13 if the communication information is communicated to the partner. Perform processing to clear information.

When the user receives a notification from the communication partner identifying section 11 that the partner who is currently transferring information disappears, the user stops communication with the partner. Therefore, only receiving the communication partner extinction signal from the communication partner identifying unit 11 and clearing the corresponding information in the communication information control unit 12 or the communication information storage unit 13 will eliminate the input of information to the connection later.

FIG. 5 illustrates a specific processing flow of this communication control method.

In the device A120, the communication partner specifying unit 1
21 exchanges information with peripheral devices to identify a communicable device. In the figure, it is shown that communication with devices B, C, and D is possible. Therefore, the device A120 is the device B1.
30 and the user information can be sent to B (step 1).

When the communication partner specifying unit 121 of the device A 120 determines that communication with the device B has become impossible due to mutual information exchange with each device (step 2), the communication partner specifying unit 1
21 sends to the communication information control unit 122 a partner extinction signal incapable of communicating with device B (step 3).

The communication information control unit 12 which has received the partner extinction signal
2 updates and deletes the corresponding information in the communication information control unit 122 and the communication information storage unit 123 in order to update and delete the transmission control information of the user data for the device B (step 4).

Reference Example 2 A second reference example of the present invention will be described with reference to the drawings.

FIG. 6 shows an example of the configuration of the communication control device according to the present reference example.

The present apparatus includes a communication partner specifying unit 21, a communication information control unit 22, a communication information storing unit 23, and a communication information saving unit 24.
Is equipped with.

The communication partner identifying unit 21 exchanges the information of the communicable device held by itself with each device, or based on the information of the communicable device of each device obtained from each device. It has a function of performing a process of selecting a communicable device and notifying the communication information control unit 22 when the stored information is changed.

The communication information control unit 22 performs reliable communication processing in order to reliably transfer the transfer information sent by the user to the communication partner.

Specifically, it confirms the transmission / reception of information with the communication partner, and manages the storage location of the waiting information stored in the communication information storage section 23.

When the disappearance signal of the currently communicating partner is received from the communication partner specifying unit 21, the communication information control unit 22.
And a function of transferring information on the device stored in the communication information storage unit 23 to the communication information saving unit 24 and a generation signal of the partner currently saving information from the communication partner identifying unit 21, the communication information It has a function of transferring the relevant information stored in the save unit 24 to the communication information control unit 22 and the communication information storage unit 23.

The communication information storage unit 23 has a function of storing transfer information from the user in accordance with an instruction from the communication information control unit 22 and sending it to the communication network.

When a user communicates information to a desired partner, the communication partner specifying unit 21 receives whether or not it is possible to communicate with the partner or a group of partners. If it is possible to communicate, it receives an identifier for the other party, sets it in the transfer information as additional information, and sends it to the communication information control unit 22 and the communication information storage unit 23. Communication information control unit 22 that received user transfer information
Receives the information on the identifier, and sends a control signal to the communication information storage unit 23 to control the connection to the partner.

Specifically, if the transfer information can be sent immediately, it is sent to the network, and if it is a temporary standby, the storage location in the communication information storage unit 23 is instructed. If the information on standby is ready to be sent, the information is sent from the communication information storage unit 23 to the network according to the instruction from the communication information control unit 22.

When the communication partner identifying section 21 processes the information exchanged and held in the self identifying section and determines that the device which can communicate is disabled, the communication partner identifying section 21 uses the information as a communication partner disappearance signal to communicate information. Transfer to the control unit 22.

Upon receiving the communication partner disappearance signal, the communication information control unit 22 transfers the control information of the connection to the partner and the connection stored in the communication information storage unit 23 if the communication information is communicated to the partner. The process of transferring the information to the communication information saving unit 24 is performed, and the corresponding information in the communication information control unit 22 and the communication information storage unit 23 is deleted.

Upon receiving the notification of the disappearance of the partner who is currently transferring information from the communication partner specifying unit 21, the user stops the communication with the partner. Therefore, only receiving the communication partner extinction signal from the communication partner identifying unit 21 and saving the corresponding information in the communication information control unit 22 or the communication information storage unit 23 will eliminate the input of information to the connection later.

When communication with the device whose information has been saved becomes possible again, the communication partner specifying unit 21 transfers the signal generated by the device to the communication information control unit 22.

Upon receipt of the signal generated by the device, the communication information control unit 22 judges whether the information of the device is saved in the communication information saving unit 24, and if it is saved, the communication information saving unit 24. From the communication information control unit 22, the communication information storage unit 2
The relevant information is transferred to 3. As a result, in the case where communication is temporarily disabled, it is possible to return to the state immediately before the communication was interrupted, and from the user's point of view, it is treated as if the communication path was temporarily cut.

FIG. 7 illustrates a specific processing flow of this communication control method.

In the device A 220, the communication partner specifying unit 2
21 exchanges information with peripheral devices to identify a communicable device. In the figure, it is shown that communication with devices B, C, and D is possible. Therefore, the device A220 is the device B2.
30 and the user information can be sent to B (step 1).

When the communication partner specifying unit 221 of the device A 220 determines that communication with the device B is impossible due to mutual information exchange with each device (step 2), the communication partner specifying unit 2
21 sends to the communication information control unit 222 a partner extinction signal that cannot communicate with the device B (step 3).

The communication information control unit 22 which has received the partner extinction signal
Reference numeral 2 denotes a communication information control unit 222 and a communication information storage unit 22 for saving transmission control information of user data for the device B.
An instruction to save the corresponding information of No. 3 is issued (step 4). At this time, communication with the device B becomes impossible.

Again, the communication partner specifying section 22 of the device A 220
If the communication partner identification unit 221 determines that communication with the device B has become possible through mutual information exchange with each device (step 5), the communication partner identification unit 221 sends the communication information control unit 222 a partner generation signal that enables communication with the device B. Is transmitted (step 6).

The communication information control unit 22 which receives the partner generation signal
2 issues an instruction to transfer the relevant information saved in the communication information saving unit 224 to the communication information control unit 222 and the communication information storage unit 223 to restore the saved transmission control information of the user data for the device B. (Step 7).

Since the communication control information of the device B is restored, the device A can return to the state when the device B disappeared. That is, from the viewpoint of the user of the device A, if the device B disappears while transmitting data addressed to B,
If it returns to a state where it can communicate with the device within a short period of time, it behaves as if a temporary failure had occurred in the communication path. Since the arrival information is buffered on the transmission side by reliable communication processing, smooth communication can be performed simply by reproducing it.

Reference Example 3 A third reference example of the present invention will be described with reference to the drawings.

FIG. 8 shows a configuration example of the communication control device according to the present reference example.

This apparatus comprises a communication partner identifying section 31, a broadcast communication information control section 32, and a communication information storage section 33.

The communication partner identifying unit 31 exchanges information of the communicable device held by itself with each device, or based on the information of the communicable device of each device obtained from each device. It has a function of performing a process of selecting a communicable device and notifying the communication information control unit 32 when the stored information is changed. In addition, as a result of selecting the communicable devices, the device group and some selected device subgroups are stored as a group in the broadcast destination list of the broadcast communication information control unit 32.

The broadcast communication information control unit 32 carries out a reliable broadcast communication process in order to reliably transfer the transfer information transmitted by the user to the communication partner.

Specifically, it confirms the transmission and reception of information with the communication partner and manages the storage location of the waiting information stored in the communication information storage unit 33. When the extinction signal of the currently communicating party is received from the communication party identifying unit 31, the transmission to the apparatus is treated as completed, and then the processing of deleting the entry of the apparatus from the group of apparatuses in the broadcast list is performed. Continue normal processing.

As another method, the communication is treated as being terminated when the disappearance signal is received, and the broadcast information in the broadcast communication information control unit 32 and the communication information storage unit 33 is updated or deleted.

The communication information storage unit 33 has a function of storing the broadcast transfer information from the user in accordance with an instruction from the communication information control unit 22 and sending it to the communication network.

When the user communicates information to a desired partner, the communication partner specifying unit 31 receives whether or not the user or the partner group can communicate. Also, the broadcast destination may be registered in the broadcast list by the user specifying a plurality of broadcast destination devices, or may be a communication group such as a device group described in the device limitation information management table of FIG. It is determined by registering the broadcast destination configured on the basis of the device information created by the partner identifying unit 31 in the list.

When the transfer information from the user is a broadcast, if the communication is possible, the broadcast identifier for the other party is received from the broadcast communication information control unit 32, and it is set as additional information in the transfer information to set the communication information. It is sent to the control unit 32 and the communication information storage unit 33.

Upon receiving the user transfer information, the broadcast communication information control unit 32 receives the broadcast identifier information and sends a control signal to the communication information storage unit 33 to control the connection to the other party.

Specifically, if the transfer information can be sent immediately, it is sent to the network, and if it is a temporary standby, the storage location in the communication information storage unit 33 is instructed.

When the information on standby is ready to be transmitted, it is transmitted from the communication information storage unit 33 to the network according to the instruction of the broadcast communication information control unit 32.

When the communication partner identifying unit 31 processes the information exchanged and held in the self identifying unit and determines that the device which can communicate is disabled, the information is broadcast as a communication partner disappearance signal. Transfer to the communication information control unit 32.

Upon receiving the communication partner extinction signal, the broadcast communication information control unit 32 treats the other party as successful transmission for the time being and communicates with the other party. When the reception confirmation for the previous packet arrives and the next information packet can be transmitted, the entry of the device is deleted from the broadcast destination in order to stop the transmission to the device.

Alternatively, there is also a method of deleting the target broadcast information stored in the broadcast communication information control unit 32 and the communication information storage unit 33.

Therefore, even if the transfer of information to a certain device becomes impossible due to the movement of the device, it is necessary for the transmitting side to reset the broadcast connection at the broadcast destination that deleted the device. Instead, since the address of the device is automatically deleted, smooth broadcast communication becomes possible.

Regarding the specific processing flow, referential example 1
Similar to the above case, the process when the device disappearance signal is generated is to delete the device from the broadcast member or delete the broadcast information to stop the broadcast communication.

Reference Example 4 A fourth reference example of the present invention will be described with reference to the drawings.

FIG. 9 shows an example of the configuration of a communication control device according to this reference example. This device is a communication partner identification unit 4
1, a broadcast communication information control unit 42, a communication information storage unit 43, and a communication information saving unit 44.

The communication partner identifying unit 41 exchanges information of the communicable device held by itself with each device, or based on the information of the communicable device of each device obtained from each device. It has a function of performing processing for selecting a communicable device and notifying the broadcast communication information control unit 42 when the stored information is changed. As a result of selecting the communicable devices, the device group and some selected device subgroups are stored as a group in the broadcast destination list of the broadcast communication information control unit 42.

The broadcast communication information control section 42 carries out a reliable broadcast communication process in order to reliably transfer the transfer information transmitted by the user to the communication partner.

Specifically, it confirms the transmission and reception of information with the communication partner and manages the storage location of the waiting information stored in the communication information storage section 43.

Further, when the extinction signal of the currently communicating party is received from the communication partner identifying section 41, the process of deleting the entry of the device from the broadcast destination or the process of canceling the broadcast is performed. The communication information control unit 42 and the communication information storage unit 4
3 stores the information for the device stored in the communication information saving unit 44 in the communication information saving unit 44 and the communication information saving unit 44 when the generation signal of the other party who is currently saving the information is received from the communication partner identifying unit 41. It has a function of transferring the corresponding information to the broadcast communication information control unit 42 and the communication information storage unit 43.

The communication information storage unit 43 has a function of storing the broadcast transfer information from the user in accordance with an instruction from the broadcast communication information control unit 42 and sending it to the communication network.

When the user communicates information to the desired destination, the communication process is basically the same as in the case of the reference example 3.

The difference is that the communication partner specifying unit 41 determines that the device that was able to communicate has become impossible as a result of processing the information exchanged and held in its own identifying unit.

In that case, the information is transferred to the broadcast communication information control unit 42 as a communication partner disappearance signal. When receiving the communication partner disappearance signal, the broadcast communication information control unit 42, if communication is being performed with respect to the partner, first of all, the control information of the connection to the partner and the connection information stored in the communication information storage unit 43 Transfer information is saved as communication information, and when continuing the broadcast at the other party who deleted the device, the same process as in Reference Example 3 is performed to delete the entry of the device from the broadcast destination when the target device disappears. To do. When only the broadcast communication is considered in the device group including the device, the corresponding information in the broadcast communication information control unit 42 and the communication information storage unit 43 is deleted.

When communication with the deleted device becomes possible again, the communication partner identifying unit 41 transfers the signal generated by the device to the broadcast communication information control unit 42.

Upon receiving the signal generated by the device, the broadcast communication information control unit 42 determines whether the information for broadcast transfer including the device is saved in the communication information saving unit 44, and saves it. If so, the corresponding information is transferred from the communication information saving unit 44 to the broadcast communication information control unit 42 and the communication information storage unit 43.

As a result, in the case where communication is temporarily disabled, it is possible to return to the state immediately before the communication was interrupted, and from the user's point of view, it is treated as if the communication path had been temporarily cut.

(Reference Example 5) A fifth reference example of the present invention will be described with reference to the drawings.

FIG. 10 shows an example of the configuration of a communication control device according to this reference example. The communication partner identification unit 51, the communication information control unit 52, and the communication information storage unit 53 are provided.

The communication partner identifying unit 51 exchanges information on the communicable device held by itself with each device, or based on the information on the communicable device of each device obtained from each device. Perform processing to select devices that can communicate. Also,
When the communication information control unit 52 performs a communication prohibition procedure on a device for which communication is set, communication is performed on the device.

The communication information control unit 52 carries out reliable communication processing in order to reliably transfer the transfer information transmitted by the user to the communication partner.

Specifically, it confirms the transmission / reception of information with the communication partner, and manages the storage location of the waiting information stored in the communication information storage section 53. Further, when the information transfer to the device of the communication partner fails, it is determined that the communication to the device is impossible, and the procedure for making the partner currently communicating with the communication partner identifying unit 51 impossible.

The communication information storage unit 53 has a function of storing transfer information from the user in accordance with an instruction from the communication information control unit 52 and sending it to the communication network.

When a user communicates information to a desired partner, the communication partner identification unit 51 receives whether or not communication with the partner or a group of partners is possible.

If it is possible to communicate, it receives an identifier for the other party, sets it as additional information in the transfer information, and sends it to the communication information control unit 52 and the communication information storage unit 53.

Communication information control unit 5 which has received the user transfer information
2 receives the information on the identifier and sends a control signal to the communication information storage 53 to control the connection to the other party.

Specifically, if the transfer information can be sent immediately, it is sent to the network, and if it is a temporary standby, the storage location in the communication information storage unit 53 is instructed. If the information on standby is ready to be sent, the information is sent from the communication information storage unit 53 to the network according to the instruction from the communication information control unit 52.

Here, as a result of the transmission processing of the user transfer information, when communication with the receiving side device becomes impossible as in the case where the reception confirmation is not received from the other party, the communication information control unit 52 The control information of the connection to the other party and the transfer information of the connection stored in the communication information storage unit 53 are cleared.

Then, the information indicating that communication with the device is disabled is transferred to the communication partner specifying unit 51, and the communication partner specifying unit 51 receiving this information performs a process to disable communication with the device. After that process, even if communication is determined to be possible in the communication partner identification unit 51, communication is temporarily disabled. Communication is disabled until the device is ready to communicate again.

Reference Example 6 A sixth reference example of the present invention will be described with reference to the drawings.

FIG. 11 shows a configuration example of the communication control device according to the present reference example. This device is a communication partner identification unit 6
1, a broadcast communication information control unit 62 and a communication information storage unit 63.

The communication partner identifying unit 61 exchanges information about the communicable device held by itself with each device, or based on the information about the communicable device of each device obtained from each device. It has a function of performing a process of selecting a communicable device and notifying the broadcast communication information control unit 62 when the stored information is changed.

As a result of selecting communicable devices, the device group and some selected device subgroups are stored as a group in the broadcast destination list of the broadcast communication information control unit 62. Then, when the communication disable procedure is performed from the broadcast communication information control unit 62 to the device for which communication is set, the process of disabling the device is performed.

The broadcast communication information control unit 62 carries out a reliable broadcast communication process in order to reliably transfer the transfer information transmitted by the user to the communication partner.

Specifically, it confirms the transmission and reception of information with the communication partner and manages the storage location of the waiting information stored in the communication information storage section 63.

In addition, in the broadcast communication, when the information transfer to one or a plurality of destination devices fails, it is determined that the communication to the device is impossible, and the communication partner specifying unit 61 cannot communicate the device. Follow the procedure below.

Then, after the transmission to the device is treated as completed, the process of deleting the entry of the device from the device group of the broadcast list is performed and the normal process is continued. As another method, the communication is terminated when the disappearance signal is received, and the broadcast information in the broadcast communication information control unit 62 and the communication information storage unit 63 is updated or deleted.

The communication information storage unit 63 has a function of storing the broadcast transfer information from the user in accordance with an instruction from the communication information control unit 62, and sending it to the communication network.

When the user communicates information to a desired partner, the communication partner specifying unit 61 receives information as to whether or not the user or the partner group can communicate.

The broadcast destination is registered in the broadcast list by designating a plurality of broadcast destination devices from the user, or the device group shown in the device limitation information management table of FIG. It is determined by registering the broadcast destination configured on the basis of the device information created by the communication partner identifying unit 61 in the list.

When the transfer information from the user is broadcast, if the communication is possible, the broadcast identifier for the other party is received from the broadcast communication information control unit 62, and it is set in the transfer information as additional information and broadcast. It is sent to the communication information control unit 62 and the communication information storage unit 63.

Upon receiving the user transfer information, the broadcast communication information control unit 62 receives the information of the broadcast identifier and sends a control signal to the communication information storage unit 63 to control the connection to the other party.

Specifically, if the transfer information can be sent immediately, it is sent to the network, and if it is a temporary standby, the storage location in the communication information storage unit 63 is instructed. If the information on standby can be sent, the information is sent from the communication information storage unit 63 to the network according to the instruction from the broadcast communication information control unit 62.

Here, when communication to the receiving side device or device group becomes impossible, such as when a reception confirmation from a broadcast destination for a transfer information packet does not arrive, the broadcast communication information control unit 62 For the time being, the transmission is treated as successful transmission to the other party, and the processing is advanced. When the reception confirmation for the previous packet arrives from all the broadcast destinations, the transmission to the device is stopped when the next information packet can be transmitted. Therefore, the entry of the device is deleted from the broadcast destination.

There is also a method of deleting the target broadcast information stored in the broadcast communication information control unit 62 and the communication information storage unit 63 in order to stop the broadcast.

Then, the information indicating that communication with the device or the device group has become impossible is transferred to the communication partner specifying unit 61, and the communication partner specifying unit 61 receiving the information makes the device incommunicable. And a process of deleting the device from the table information for selecting the broadcast device group. After that process, even if communication is possible due to the determination in the communication partner identification unit 61,
Set communication disabled once. Communication is disabled until the device is ready to communicate again.

<Second Reference Invention> (Reference Example 1) FIG. 16 is a diagram for explaining the configuration of the application processing unit 401 in FIG.

The application management unit 452 uses the user identifier, information about the user such as user name and affiliation,
Further, it is managed as a user information list shown in FIG. 17 by associating whether or not the user exists in the group. Further, the shared data identifier and the storage area identifier are associated with each other and managed as a shared data management list shown in FIG. Further, the shared data storage status data shown in FIG. 19 in which the shared data identifier is associated with the file name stored in the external storage device 454 is managed.

The data sharing control unit 456 manages sharing of data among a plurality of devices. Here, the process of creating an identifier for uniquely identifying the shared data, delivering the data, managing the right to change the data, and instructing to change the data is performed.

The user identification section 458 creates an identifier for uniquely identifying a user belonging to a group. The user identifier is associated with the device identifier and managed as a user device correspondence list shown in FIG.

The external storage device 454 stores data. The display unit displays shared data and a message to the user.

The application executing section 460 controls the processing of the application processing section 450.

The communication control unit 462 is the group management unit 46.
4. It has a user information acquisition unit 466.

The user information acquisition unit 466 executes a process of acquiring user information of the device having the specified device identifier.

The application processing section 450 has a display section 468.

First, a method of interrupting the data sharing application will be described using this application processing section 450.

When the user gives an instruction to suspend data sharing, an application suspension message is broadcast to all the devices in the group.

Next, the contents of the user information list of the application processing unit 450 are stored in the external storage device 454 in all the devices in the group.

The above is the application interruption processing. This process will be further described in detail with reference to the flowchart of FIG.

(Step A1) The application interruption message is broadcast to all the devices in the group.

(Step A2) The contents of the user information list of the application processing section 450 are stored in the external storage device 454.
Save to.

(Step A3) The number of shared data is m and the shared data processing counter is n. The initial value of n is 1. Set the number of shared data m.

(Step A4) The user is asked whether to save the n-th shared data. If it is saved, step A5 is executed, and if not, step A6 is executed.

(Step A5) The shared data is saved in the external storage device 454 by designating the file name. The shared data storage status data is stored in association with the shared data identifier and the designated file name. Step A7 is executed.

(Step A6) The shared data storage status data is stored in association with the shared data identifier and a code indicating a non-stored state, for example, NULL. Step A7 is executed.

(Step A7) The shared data processing counter n is incremented by 1 and compared with the shared data number m. If m ≧ n, step A4 is executed. Otherwise it ends.

By executing the above process, it becomes possible to know which shared data is stored when data sharing is resumed.

Next, the restarting method will be described with reference to the flowchart of FIG.

[0218] The following processing is executed by an arbitrary user activating the application and designating restart.

(Step B1) The user information list data corresponding to the data sharing work to be resumed is read from the external storage device 454. The user status in the user information list is set to absent.

(Step B2) Information matching the user's own user information is searched and the corresponding user identifier is used as the own user identifier. Also, the corresponding state is assumed to exist.

(Step B3) The communicable device identifier list is acquired from the user identification section. The number of devices is m.
The number of communicated devices is n, and n = 1.

(Step B4) A user information transmission command is transmitted to the nth device in the communicable device identification list.

(Step B5) The returned user information is compared with the user information in the user information list. If there is a match, step B6 is performed; if there is no match, B
Execute 7.

(Step B6) The user identifier corresponding to the matched information is made to correspond to the device identifier in step B4,
Register in the user device correspondence table.

In addition, the user status in the user information list is changed to “exist”.

(Step B7) The shared data processing counter n is incremented by 1 and compared with the number of devices m. If m ≧ n, step B4 is executed.

(Step B8) The user information list is checked to create a list of existing user identifiers. It is converted to a device identifier using the user device correspondence table and a group management unit is requested to create a group.

By executing the respective processes shown in this reference example, it is possible to restart the application even when the user is different when the data sharing is interrupted and when the data sharing is restarted.

Reference Example 2 The data sharing restart processing of the second reference example will be described with reference to the flowchart of FIG.

In the application processing section 450 of FIG. 16, the data sharing application is restarted and the communication connection is set within the group.

(Step C1) Each device reads the shared data storage status data from the external storage device 454. The number of shared data is m and the shared data processing counter is n. The initial value of n is 1.

(Step C2) The storage status of the nth shared data is checked. If NULL is associated with the shared data identifier, step C4 is executed.

(Step C3) The external storage device 454 is accessed using the associated data as a file identifier. If the shared data has been erased, the access will fail. If the access result is failure, step C5 is executed.

(Step C4) The shared data is read into the device, the storage area identifier and the shared data identifier are associated with each other, and the application processing unit 450 adds them to the shared data management list. Step C6 is executed.

(Step C5) The application management section 452 determines that the storage area identifier has a specific value, for example, NULL.
Is added to the shared data management list in association with the shared data identifier. Step C6 is executed.

(Step C6) The shared data processing counter n is incremented by 1 and compared with the shared data number m. If m ≧ n, step C2 is executed.

(Step C7) n is set to 1.

(Step C8) The application management section 452 checks the n-th correspondence in the shared data management list. If NULL is associated with the shared data identifier, step C10 is executed.

(Step C9) The shared data processing counter n is incremented by 1 and compared with the shared data number m. If n> m, the process ends. Otherwise, step C8 is executed.

(Step C10) A list for identifying the data possessing user is created (see FIG. 21). When creating the list, add from the user with the lowest user ID. Associate a flag indicating no data with your own identifier.

(Step C11) A specific person is selected from the users in the group. The selection method may be a method of checking the data possession list and selecting the user having the smallest number among the users who are not flagged as having no data.

The processing device identifier associated with the user is obtained from the user identification section 458. The processor identifier is used to transmit the data transmission request message and the shared data identifier to the selected device.

When the selected device receives the data transfer request message, the application management unit 4
52, and the value of the shared data storage area identifier is NULL
If so, a data transfer impossible message is sent to the communication control unit. Then, the transfer process of the designated shared data is executed.

(Step C12) A reply is checked from the selected device. In the case of a data transfer message, step C13 is executed. In the case of a data transfer impossible message, step C14 is executed.

(Step C13) Data reception processing is performed to associate the storage area identifier with the shared data identifier,
The application processing unit 450 adds it to the shared data management list. Step C9 is executed.

(Step C14) The no data flag is associated with the user identifier selected in step C11 of the data possession user list.

(Step C15) The shared data processing counter n is incremented by 1 and compared with the shared data number m. m ≧ n
If so, step C11 is executed.

(Step C16) Notify the user that the data does not exist in the group. Step C9 is executed.

By executing such a process, necessary shared data can be stored in the external storage device 4 when data sharing is resumed.
Data sharing can be resumed even if the data is not stored in 54.

In the case where all the members in the group have not saved the shared data, it is dealt with by the following reference example.

(Reference Example 3) The data sharing restart processing of the third reference example will be described with reference to the flowchart of FIG.

A group participation request from a new user is accepted, and after the group is added to the group, the following processing is executed.

(Step D1) Except for the newly participating device, the device identifier is checked in each device and a specific one is selected. As a selection method, a method of selecting the device having the smallest device identifier can be considered.

(Step D2) The shared data management list of the application management unit 452 is examined, and the number of shared data is m and the number of processed data is n. Set n = 1.

(Step D3) The application management section 452 checks the n-th correspondence in the shared data management list. If NULL is associated with the shared data identifier, step D5 is executed.

(Step D4) The shared data processing counter n is incremented by 1 and compared with the shared data number m. If n ≧ m, the process ends. Otherwise, step D3 is executed.

(Step D5) The processing device identifier associated with the new user is obtained from the user identification section 458. The processing device identifier is used to send the data broadcast request message and the shared data identifier to the selected device.

When the new participation device receives the data broadcast request message, the application management unit 45
2. If the value of the shared data storage area identifier is NULL, the data broadcast impossible message is sent to the communication control unit. And
Executes broadcast processing of specified shared data.

(Step D6) The reply is checked from the new participating device. In case of data broadcast message, step D
In the case of the data broadcast impossible message, step D8 is executed.

(Step D7) Perform data reception processing,
The storage area identifier and the shared data identifier are associated with each other, and the application processing unit 450 adds them to the shared data management list. Step D4 is executed.

(Step D8) Notify the user that the data does not exist in the group. Step D4 is executed.

By executing such a process, necessary shared data can be stored in the external storage device 4 when the data sharing is resumed.
Data sharing can be resumed even if the data is not stored in 54.

<Third Reference Invention> Reference Example 1 This reference example will be described with reference to the drawings.

FIG. 26 shows an example of the configuration of a communication device according to this reference example.

The communication device 510 includes an antenna 511, a radio transmitter / receiver 520, a communication controller 521, and an information controller 52.
2, a group management unit 523 and a difference control unit 524.

The communication device 510 communicates with other communication devices by means of the antenna 511, the radio transmitter / receiver 520 and the communication controller 521.

The information control means 522 transmits / receives to / from the communication control section 521 the information necessary for collaborating with other communication devices.

The group management section 523 manages the members who are currently participating in the joint work.

The difference control means 524 is the file management unit 5
30, a difference management unit 531, a difference information storage unit 532, and a difference identification unit 533 are provided, and when a member who once leaves the group rejoins, the difference information between the joint file held at the time of leaving and the current joint file is transmitted. To do.

When the file management unit 530 updates the joint file based on the file update information from other members or writes to the joint file, the file update information is sent to the other members through the information control unit 522. Send.

The difference management means 531 has a timer or the like, calculates the difference between the jointly updated files by the procedure shown in FIG. 27 (step E1), and assigns the file difference identifier to this (step E2). ), And the table is stored in the difference information storage unit 532 as shown in FIG. 37 (step E3).

In the case of leaving the group, the member leaving according to the procedure as shown in FIG. 28 broadcasts the leaving information including the latest file difference identifier of the difference information storage unit 532 and the member identifier to the members in the group. Alternatively, it is conceivable that the departure information is transmitted to a specific member (step F1).

The members in the group that received the withdrawal information assign the withdrawn member identifier to the file difference identifier of the difference information storage unit 532 corresponding to the file difference identifier included in the withdrawal information by the procedure as shown in FIG. (Steps G1 and G2), and the difference information storage unit 53
2 is stored in a table as shown in FIG. 38 (step G3).

When the removed member rejoins the group, the latest file information acquisition request is broadcast to the members in the group by the information control means 522 as in step H1 of FIG. Or send it to a specific member. It is also possible to send the latest file acquisition request together with the participation request.

The members in the group that have received the latest file information acquisition request execute the processing in the procedure as shown in FIG. The member identifier of the rejoined member is searched from the difference information storage unit 532 (step I1), and if the member identifier exists, the difference information from the time of leaving the existence is acquired, and the difference identifying unit 533 determines that the joint file is being edited. The difference is calculated (steps I2 and I3).

The latest file information is created from the difference information calculated by the difference identifying means 533 (step I4) and transmitted to the rejoined members (step I6). It is also possible to send the latest file information including the participation permission information and the current file difference identifier. Further, at this time, it may be broadcast to notify that the members who have rejoined the members in other groups are permitted to participate. In this case, when another member gives permission to join the member who has rejoined, the transmission of the latest file information may be stopped (step I5).

In addition to this, by using the difference information comparing means, the latest file information is transmitted only when the information amount of the difference information is less than or equal to a certain threshold value, and when it is more than the threshold value, all files are transmitted as the latest file information. Depending on the type and size of the joint file, it may be possible to decide whether to transmit the difference information or all the files (step I).
4). At this time, it may be possible to add an identifier for identifying whether the latest file information is difference information or all files.

When the rejoined members receive the latest file information, they are updated to the latest file currently being edited as shown in step H3 of FIG. If the latest file information has a file difference identifier, the difference information storage unit 532
It is conceivable that the file difference identifier of is also updated at the same time.

When the latest file information is not returned,
Resend the latest file information or request all information of the joint file. A timer is provided for the timing of retransmission, and it is performed when a timeout occurs.

FIG. 32 is a flow chart for transmitting the leave information. If there is a leave request from the group, the file difference identifier in the difference information storage unit is saved (step J
1) Save the file currently being edited (step J
2).

(Reference Example 2) A second reference example will be described below.

FIG. 26 also shows a configuration example of the communication device according to this reference example, and the configuration is the same as that of the first reference example.

The different points will be described below.

When the removed member rejoins the group, the latest file information acquisition request is broadcast to the members in the group by the information control means 522 as in step H1 of FIG. Or send it to a specific member. It is also possible to send the latest file acquisition request together with the participation request.

The members in the group that have received the latest file information acquisition request acquire the difference information from the difference information storage unit 532 from the time when the rejoined member leaves, and the difference identification means 533 recognizes that it is the joint file currently being edited. Calculate the difference between.

The members in the group having received the latest file information acquisition request execute the processing in the procedure as shown in FIG. The file difference identifier of the rejoined member is searched from the difference information storage unit 532 (step K1), and if the file difference identifier exists, the difference identifying means 533 calculates the difference with the joint file currently being edited (step K1).
3) and the difference information (step K5). If there is no file difference identifier, the file currently being edited is copied (step K4) and used as difference information (step K5).

It is also possible to create the latest file information from the difference information (step K6) and send it to the rejoined members (step K8), and send the latest file information including the participation permission information and the current file difference identifier. To be Further, at this time, it may be broadcast to notify that the members who have rejoined the members in other groups are permitted to participate. In this case, when another member permits the rejoined member to participate, it is possible to stop the transmission of the latest file information and the like (step K7).

In addition to this, by using the difference information comparing means, the latest file information is transmitted only when the information amount of the difference information is less than or equal to a certain threshold value, and when it is more than the threshold value, all files are transmitted as the latest file information. Depending on the type and size of the joint file, it may be possible to decide whether to transmit the difference information or all files (step K).
6). At this time, it may be possible to add an identifier for identifying whether the latest file information is difference information or all files.

When the rejoined members receive the latest file information, they are updated to the latest file currently being edited as shown in step H3 of FIG. If the latest file information has a file difference identifier, the difference information storage unit 532
It is conceivable that the file difference identifier of is also updated simultaneously.

When the latest file information is not returned,
Resend the latest file information or request all information of the joint file. A timer is provided for the timing of retransmission, and it is performed when a timeout occurs.

Reference Example 3 A third reference example will be described below.

FIG. 34 shows an example of the configuration of a communication device according to this reference example.

The communication device 510 includes an antenna 511, a radio transmitter / receiver 520, a communication controller 521, and an information controller 52.
2, a group management unit 523 and a difference control unit 524.

The communication device 510 communicates with other communication devices by means of the antenna 511, the radio transmitter / receiver 520 and the communication controller 521.

The information control means 522 transmits and receives information necessary for collaborative work with other communication devices to and from the communication control unit 521.

The group management unit 523 manages the members who are currently participating in the joint work.

In the file management unit 530, when the joint file is updated or written in the joint file based on the file update information from the other member, the file update information is transmitted to the other member through the information control unit 522. Send.

When leaving a group, a member leaving according to the procedure shown in FIG. 28 broadcasts leaving information including a member identifier to members in the group. Alternatively, it is conceivable that the departure information is transmitted to a specific member (step F1).

The members in the group which received the withdrawal information copy the joint file currently being edited by the procedure as shown in FIG. 35 (step L1), give the withdrawn member identifier to this (step L2), and Storage unit 53
4 (step L3). In addition to this, a timer file or the like is used to periodically make a copy of the joint file and store the joint file in the temporary storage unit. When the departure information is received, the joint file in the temporary storage unit is given the identifier of the member who has left the file storage unit. It is conceivable to store in 534.

When the removed member rejoins the group, the latest file information acquisition request is broadcast to the members in the group by the information control means 522 as in step H1 of FIG. Or send it to a specific member. It is also possible to send the latest file acquisition request together with the participation request.

The members in the group which have received the latest file information acquisition request execute the processing in the procedure as shown in FIG. The member identifier of the rejoined member is searched from the file storage unit 534 (step M1), and if the member identifier is present, the difference information from the time of leaving the existence is acquired, and the difference identification means 533 compares the file with the joint file currently being edited. The difference is calculated (steps M2 and M3).

The latest file information is created from the difference information calculated by the difference identifying means 533 (step M4) and transmitted to the rejoined members (step M6). It is possible to send the latest file information including participation permission information. Further, at this time, it may be broadcast to notify that the members who have rejoined the members in other groups are permitted to participate. In this case, when another member permits the rejoined member to participate, it is possible to stop the transmission of the latest file information and the like (step M5).

In addition to this, by using the difference information comparing means, the latest file information is transmitted only when the information amount of the difference information is less than or equal to a certain threshold value, and when it is more than the threshold value, all files are transmitted as the latest file information. Depending on the type and size of the joint file, it may be possible to decide whether to transmit the difference information or all the files (step M).
4). At this time, it may be possible to add an identifier for identifying whether the latest file information is difference information or all files.

When the rejoined members receive the latest file information, they are updated to the latest file currently being edited as shown in step H3 of FIG.

When the latest file information is not returned,
Resend the latest file information or request all information of the joint file. A timer is provided for the timing of retransmission, and it is performed when a timeout occurs.

[0306]

According to the present invention, the start of the resume state and the resumption of the operation are notified to the surrounding communication terminals, and the notified communication terminal suspends the communication with the resumed device until the operation is resumed. By doing so, it is possible to prevent disconnecting the communication connection by determining that the device in the resume state has become unable to communicate.

[Brief description of drawings]

FIG. 1 is a block diagram showing a concept of a first reference invention.

FIG. 2 is a block diagram of Reference Example 1 of the reference invention.

FIG. 3 is a diagram showing a configuration example of a communication partner limiting unit in Reference Example 1.

FIG. 4 is a diagram showing a storage configuration example of management storage information of a communication partner limiting unit in the reference example 1;

5 is a diagram showing an example of a specific processing flow in Reference Example 1. FIG.

FIG. 6 is a diagram showing a configuration example in a case where information is saved in a second reference example.

FIG. 7 is a diagram showing an example of a specific processing flow in Reference Example 2;

FIG. 8 is a diagram showing a configuration example in the case of performing broadcast communication in Reference Example 3;

FIG. 9 is a diagram showing a configuration example in the case of performing broadcast communication and saving information in Reference Example 4;

FIG. 10 is a diagram showing a configuration example in the case of updating communication partner identification information by reliable communication control in Reference Example 5;

FIG. 11 is a diagram showing a configuration example in the case of updating communication partner identification information by reliable broadcast communication control in Reference Example 6;

FIG. 12 is a block diagram of an information processing apparatus of the present invention.

FIG. 13 is a table related to group settings included in a group setting unit according to the embodiment of this invention.

FIG. 14 is a table relating to group settings included in the group setting unit according to the embodiment of this invention.

FIG. 15 is a flowchart showing a procedure for updating a communicable terminal list according to the embodiment of this invention.

FIG. 16 is a configuration example of an application processing unit of the second reference invention.

FIG. 17 is a configuration example of a user information list.

FIG. 18 is a configuration example of a shared data management list.

FIG. 19 is an example of a shared data storage status data configuration.

FIG. 20 is an example of a user device correspondence table.

FIG. 21 is an example of a user possession user identifier list.

FIG. 22 is a flowchart for restarting a data sharing application.

FIG. 23 is a data interruption process flowchart.

FIG. 24 is a flowchart of a data sharing restart method.

FIG. 25 is a data sharing restart processing flowchart.

FIG. 26 is a configuration diagram of a communication device of a third reference invention.

FIG. 27 is a flowchart of a file difference storage method.

FIG. 28 is a flow chart of a method of transmitting departure information.

FIG. 29 is a flowchart of a processing method when receiving departure information.

FIG. 30 is a flowchart of a method for updating to the latest file when rejoining a group.

FIG. 31 is a flowchart of a method for transmitting the latest file information.

FIG. 32 is a flow chart of a method of transmitting departure information.

FIG. 33 is a flowchart of a method of transmitting latest file information.

FIG. 34 is a configuration diagram of a communication device.

FIG. 35 is a flowchart of a processing method when receiving departure information.

FIG. 36 is a flowchart of a method for transmitting the latest file information.

FIG. 37 is a storage table of difference information.

FIG. 38 is a storage table of difference information and member identifiers.

[Explanation of symbols]

401 Application processing unit 402 communication control unit 403 Wireless transceiver 404 Resume control unit

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinzo Matsubara, Osaka Prefecture Osaka City Kita-ku 1-30-1 Oyodo Naka Umeda Sky Building Tower West Co., Ltd. Toshiba Kansai Branch Office (72) Inventor Yosuke Yosuke Osaka Prefecture 1-30 Odaidanaka, Kita-ku, Osaka Umeda Sky Building Tower West Co., Ltd. Toshiba Kansai Branch (56) References JP-A-5-175964 (JP, A) JP-A-3-171846 (JP, A) ) JP-A-8-79269 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04L 12/28-12/46 H04L 29/00 G06F 1/26 G06F 1/30

Claims (4)

(57) [Claims] 1. Communicating with each other via a wireless channel ,
A communication control device provided in each of a plurality of communication terminals having a resume function, the resume state detecting means for detecting that it is in a resume state and returning from the resume state, and the resume state detecting means. When the resume state is detected, the resume state notifying means for notifying itself to the resume state to the other communication terminal in communication, and the resume state detecting means detecting the return from the resume state Then, the resume state return notifying means for notifying the other communication terminal of the return and the communication interruption for interrupting the communication with the resume terminal when notified of the resume state from the other communication terminal And when the communication terminal notifies that the device has recovered from the resume state, Configuration of network and resume communication resuming unit communicates, the own communication terminal and another communication terminal was
A network that collects network configuration information that is status information.
Network configuration information collecting means and a network for storing the collected network configuration information.
Network configuration information storage means and the network configuration information storage means when the self returns from the resume state.
Network configuration newly collected by network configuration information collection means
Information is stored in the network configuration information storage means.
The network structure that I remembered when I entered the resume state
When all match with the success information, the return operation is completed, and after that,
The network stored in the network configuration information storage means.
Network configuration information hand that updates the network configuration information
A communication control device comprising: a stage . 2. A resume state returning means for returning from the resume state when notified by another communication terminal that the user has returned from the resume state when the self is in the resume state. Communication control device. 3. Communicating with each other over a wireless channel ,
A communication control method of a communication control device provided in each of a plurality of communication terminals having a resume function, wherein when detecting that the communication terminal itself is in a resume state, the communication terminal is in a resume state to another communication terminal during communication. When it detects that it has recovered from the resume state,
Notifying the other communication terminal of this restoration, and when the other communication terminal is notified of the resume state, communication with the communication terminal is interrupted, and the communication terminal resumes from the resume state. When notified of the return, this suspended communication is restarted, and the network configuration between the own communication terminal and other communication terminals is configured.
It is common to collect network configuration information that is status information.
In addition, the collected network configuration information is stored and newly collected when the self returns from the resume state.
Network configuration information is self-resume
If all the network configuration information stored at that time matches
After the return operation is completed,
A communication control method characterized by updating network configuration information . 4. The communication control method according to claim 3 , wherein when the self is in the resume state, the resume state is resumed when another communication terminal notifies that the resume state is restored.