JPH0879269A - Communication controller and communication control method - Google Patents

Abstract

PURPOSE: To avoid useless information transfer and to improve total throughput by eliminating pertinent equipment from communicable equipment when a communication control means receives communication impossible signals by a transmission failure. CONSTITUTION: When it is judged that a communicating party can not ARM perform communication for information actually transferred from a user based on the information by a communicating part specifying part 1, a communication information control part 2 receives communicating party elimination signals from the communicating party specifying part 1, stops the communication with the communicating party and clears required control information. Also, when user information can not be communicated due to the abnormality of the communicating party or the like, the communication information control part 2 clears transfer control information inside the present control part and also transmits an instruction for eliminating the equipment from the group of the communicable equipments to the communicating party specifying part 1. The communicating party specifying part 1 performs comparison with the information held in the present specifying part 1 and judges elimination when the instruction for performing the elimination arrives and performs the elimination from the equipment list of the group of the communicable equipments in the case of performing the elimination.

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 between a plurality of communication terminals.

[0002]

[Prior art]

(1) Conventionally, communication control in the case of performing data communication, particularly control for performing reliable communication, is, for example, in the case of packet communication, when a certain packet is transmitted, the transmission confirmation from the communication partner side for the packet is confirmed. It gets the information, sends the next packet, and so on.

If the transmission confirmation information is not returned from the other party, it is assumed that an error has occurred in the transmission information.
Attempt transmission again and wait for the return of the transmission confirmation information. Then, if the transmission confirmation information is not returned after repeating the retransmission several times, it is considered that the communication partner is in an abnormal state that is not in the reception state,
Terminate communication.

In this case, in order to consider that the communication partner is in an abnormal state in which it is not in the receiving state, the transmission is tried once, the timeout is waited for a fixed time, and the retransmission is repeated several times, and then the determination is made, so that the abnormality is detected. It took time to do.

In addition, when performing reliable broadcast communication,
Generally, as in the above case, when a packet is transmitted by broadcast, the transmission confirmation information from all the receivers is acquired, the next packet is transmitted, and this is repeated.

If at least one piece of transmission confirmation information is not returned from the other party, it is assumed that an error has occurred in the transmission information or a reception error of the other party has occurred, transmission is tried again, and the transmission confirmation information Wait to return.

If the transmission confirmation information is not returned from the corresponding party after the retransmission is repeated several times, it is considered that the communication party is in an abnormal state in which the communication party is not in the receiving state, and the communication itself is terminated, or the communication party is identified as the same. Delete from the report destination and continue communication.

In this case as well, in order to consider that the communication partner is in an abnormal state in which it is not in the receiving state, the transmission is tried once, the timeout is waited for a fixed time, and the retransmission is repeated several times, and then the determination is made. It takes time to detect,
The time interval until the transmission of the next packet increases, leading to a decrease in throughput.

Further, in a wireless network, whether or not communication with a desired communication partner can always be continued is not always stable due to radio wave propagation problems. In particular, the characteristics change due to changes in the environment between communication paths and the movement of transmitting / receiving equipment.

Therefore, each communication device is required to have a function of recognizing whether or not it is possible to communicate with a desired partner by exchanging control information with each other to recognize a communication path interruption.

As a communication control device that realizes this, the applicant of the present invention exchanges information about the communication path status between the communication equipments that have established the communication paths with each other, by communicating with each other. Proposed to identify and identify communicable devices (Japanese Patent Application No. 6-75757).

In this communication control device, when each device determines that the communication path to a certain device is cut off, the device is deleted from the communicable device group, and after that process, the device is deleted. The information was not to be transferred.

Further, the judgment of the interruption of the communication path with each device is not based on the actual transmission / reception of data but is based on the exchange of the control information between the means for specifying the communicable device. Even if communication to a certain device is actually impossible, the information is not reflected in the means for identifying the communicable device, the information can be transmitted, and unnecessary retransmission is repeated. there were.

(2) In recent years, due to the progress of hardware technology, a small computer such as a notebook computer or a sub-notebook computer has a sufficient processing capacity, and such a small computer can be accommodated in a computer network. Then, it has come to be used to execute 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 has been able to set a communication connection by allowing each computer to autonomously recognize 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 the portable computer, how to reduce the 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 the restart can be facilitated. It is for doing.

This resume function causes no 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.

Further, even when the above communication control method is used, the response is lost, so it is determined that the device does not exist, and even if the power is turned on again, the operation continues from the same state. I can't restart.

(3) Further, there is a collaborative work support system using a computer as an application executed by using a computer connected by such a computer network.

In the collaborative work support system, it is necessary to share various data among the devices. When the communication connection is once disconnected or temporarily interrupted as described above, the consistency of the shared data may be lost by updating the data during that time.

Further, when the work is temporarily interrupted and then restarted, there is a possibility that the participating members are not the same as before the interruption. If there is a member who is newly participating from the time of resumption, that member naturally does not hold the shared data before the resumption, so in this case also there will be a difference in the shared data held among the members. , The meeting cannot be resumed normally as it is.

[0023]

[Problems to be Solved by the Invention]

As described in (1), when performing reliable communication on a one-to-one basis, in order to consider the communication partner to be in an abnormal state that is not in the receiving state, try sending once and time out for a certain period of time. It takes a long time to detect an anomaly because it waits until the transmission is retried several times and then the determination is made. In addition, even in the case of broadcast communication, in order to consider that the communication partner is in an abnormal state where it is not in the receiving state, it tries to transmit once, waits until timeout for a certain period of time, and then repeats several times before making a determination. It takes time to detect an abnormality, and the time interval until the transmission of the next packet increases, which leads to a decrease in throughput.

Further, when it is detected that the communication partner is in an abnormal state in which the communication partner is not in a receiving state due to a timeout due to retransmission, etc., the communication possible device information is updated by exchanging control information with a path different from the user's data path. In the means to identify the communicable device, if only the user data path is abnormal such as a receiver failure for user data communication, it will remain identified as the communicable device and will not actually be transmitted. Although it is impossible, unnecessary retransmission will be repeated.

The first and second inventions eliminate the above problems,
Providing a communication control device that makes it possible to quickly grasp the state of the communication path, perform efficient information transfer, avoid unnecessary information transfer to incommunicable devices, and improve total throughput To do.

As described in (2), when communication is performed using an information processing device such as a portable computer, the computer that does not resume when the resume function is used is
There is a problem that the communication connection is unilaterally disconnected because it is determined that communication is impossible even in the resume state.

The third to fifth inventions have been made in view of the above problems. Even when the execution is temporarily interrupted by the resume, the operation after the power is turned on can be restarted without any problem. It is for doing.

As described in (3), in the collaborative work support system, when the communication connection is disconnected or the operation of the application itself is interrupted, the consistency of the shared data that should be held without contradiction. There is a problem of loss of sex.

The sixth to ninth inventions have been made in view of the above problems, and the shared data in the collaborative work support system in which the execution is temporarily interrupted can be correctly maintained after the execution is resumed. It is meant to be drooping.

[0030]

A communication control apparatus according to a first aspect of the present invention specifies another device capable of communicating with its own device wirelessly and determines that the specified other device in communication cannot communicate. When a judgment is made, a communication partner identification means that outputs a partner disappearance signal, and a confirmation signal is transmitted to another device that can communicate based on the control information via a line, and communication is performed after receiving a reception confirmation signal from another device. Communication information storage means to perform,
When a partner extinction signal relating to a device in communication is input from the communication partner identifying unit, the communication control unit for processing the control information of the communication information storage unit to avoid communication with the device incapable of communication. Have and.

The communication control device of the second invention transmits a confirmation signal to the other device communicable based on the control information by wireless communication with the communication partner specifying means for specifying the other device communicable with the own device. Communication is performed after receiving the reception confirmation signal from the other device, and the communication information storage unit that outputs the communication disable signal when the transmission fails and the communication disable signal due to the transmission failure from the communication information storage unit , And a communication control unit that deletes the corresponding device from the communicable devices specified by the communication partner specifying unit.

A communication control device according to a third aspect of the present invention is a communication terminal having a resume function, and a resume state detecting means for detecting that the device itself is in a resume state and returning from the resume state, and the resume state detecting means. When the state detecting means detects that the state is resumed,
When the resume state notifying means for notifying itself to the resume state to the other communication terminal during communication and the resume state detecting means detecting the return from the resume state, the fact that the return has been made is given to the other one. Resume state return notifying means for notifying the communication terminal, and communication interruption means for interrupting communication with the communication terminal when notified of the resume state from another communication terminal, and from the resume state from the communication terminal When notified of the return, the communication restart means restarts the interrupted communication.

A communication control device according to a fourth aspect of the present invention is a communication terminal having a resume function, which is a network configuration for collecting network configuration information which is information on a network configuration state between the own communication terminal and another communication terminal. The information collecting means, the network configuration information storing means for storing the network configuration information, and the network configuration information newly collected by the network configuration information collecting means at the time of returning from the resume state is the self-information of the network configuration information storing means. The network configuration information means updates the network configuration information stored in the network configuration information storage means after the network configuration information stored in the resume state is matched.

The communication control device according to the fifth aspect of the invention has a communication function and a resume function, and a resume state return detecting means for detecting that the self has returned from the resume state, and this resume state return detecting means is for returning from the resume state. Resume state return notifying means for notifying the other communication terminal of the return from the resume state when it detects the return, and when the other communication terminal is notified of the return from the resume state when the self is in the resume state It comprises a resume state returning means for returning from the resume state.

The communication control device of the sixth invention is a communication terminal which is communicable with each other and which constitutes a group for performing mutual communication by sharing data, and investigates other communicable communication terminals. And an interruption instruction means for instructing interruption of communication by the group during communication with other communication terminals forming the group, and a user who has previously belonged to the group when the interruption instruction is given by the interruption instruction means. Storage information that stores the user existence history information including the identification information of the user and the identification information of the user who currently belongs to the group, the restart instruction means that instructs restart of the group, and the user when the restart instruction is given by the restart instruction means. The reading means for reading the existence history information from the storage means, the user existence history information read by the reading means, and the user existence history information read by the investigation means. The user identification information of another communication terminal that can perform communication is compared, and a group is created by comparison specifying means for specifying the user identification information belonging to both and the user identification information specified by this comparison specifying means. It is composed of means for restarting a group.

The communication control device of the seventh invention is a communication terminal that forms a group so that they can communicate with each other and share data with each other, and with other communication terminals that form a group. Interruption instruction means for instructing interruption of communication by the group during communication, and first storage means for selecting and saving certain shared data from the shared data when the interruption instruction means gives an interruption instruction, The second storage unit stores the shared data storage status information including the identifier of the shared data stored in the first storage unit and the identifier of the deleted shared data.

A communication control device of an eighth invention is a communication terminal which creates a group among a plurality of communication terminals and carries out a shared work by performing communication within the group, wherein the shared data within the group is shared. In the group, a difference management unit that detects a difference between the changed contents and updates the difference contents with a data difference identifier; a data management unit that manages the shared data being edited and the difference contents; Detection means for detecting the departure of the communication terminal from the communication terminal, and difference information storage for adding and storing the user identifier of the communication terminal that has left the data difference identifier relating to the difference contents at the time of the departure detected by the departure detection means And an information acquisition request for receiving the latest data information acquisition request from the rejoined communication terminal when the withdrawn communication terminal rejoins the group. When the receiving unit and the information acquisition request receiving unit receive the latest data information acquisition request, the data difference identifier corresponding to the user identifier of the rejoined communication terminal stored in the difference information storage unit is used to perform the Difference information at the time of re-joining from the difference content drawing-out means for drawing out the difference content at the time of leaving from the data managing means, the difference content drawn out by the difference content drawing-out means, and the shared data being edited at the time of re-joining of the data managing means. And a transmitting means for transmitting the rejoining difference information calculated by the difference identifying means to the rejoined communication terminal.

The communication control device of the ninth invention is a communication terminal for performing a shared work by creating a group between a plurality of communication terminals and performing communication within this group, which is being edited in the group. Data management means for managing shared data, departure detection means for detecting departure of a communication terminal from the group, shared data being edited at the time of departure detected by this departure detection means, and user identifier of the communication terminal that has left History information managing means for storing the information, an information acquisition request receiving means for receiving the latest data information acquisition request from the rejoined communication terminal when the withdrawn communication terminal rejoins the group, and this information acquisition When the request receiving means receives the latest data information acquisition request, the shared data of the history information managing means held at the time of leaving and the re-creation of the data managing means. And a transmission means for transmitting the rejoining difference information calculated by the difference identifying means to the rejoined communication terminal. Is.

[0039]

[Operation] The communication control device of the first invention will be described.

The wireless communication means wirelessly communicates or broadcasts with other devices.

The communication partner specifying means specifies another device capable of communicating with the own device via the wireless communication means. Further, when it is determined under certain conditions that communication with the specified other device currently in communication is impossible, a partner extinction signal is output. It is determined that this communication is impossible by obtaining information via wireless communication means.

The communication information storage means transmits a confirmation signal to another device communicable based on the control information via the wireless communication means, and performs communication after receiving the reception confirmation signal from the other device.

The communication control means processes the control information of the communication information storage means by receiving the partner extinction signal relating to the device currently in communication from the communication partner specifying means, thereby making the communication impossible. Avoid communication with the device.

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

The wireless communication means wirelessly communicates or broadcasts with other devices.

The communication partner specifying means specifies another device capable of communicating with the own device.

The communication information storage means transmits a confirmation signal to another device communicable based on the control information via the wireless communication means, performs communication after receiving the reception confirmation signal from the other device, and transmits the confirmation signal. In case of failure, it outputs a communication disable signal.

When the communication control means receives from the communication information storage means a communication disable signal due to a transmission failure, it deletes the corresponding equipment from the communicable equipment specified by the communication partner specifying means. As a result, it is possible to avoid useless information transfer to the incommunicable device, which leads to improvement in total throughput.

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

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

When the resume state detecting means detects that the resume state detecting means is in the resume state, the resume state notifying means notifies 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 detecting means has returned from the resume state, the resume-state returning 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, when notified by another communication terminal that the communication terminal has recovered from the resumed state, restarts communication with this interrupted other communication terminal.

In the third invention, the start of the resume state and the restart of the operation are notified to the surrounding communication terminals, and the notified communication terminal suspends the communication with the apparatus being resumed until the operation is restarted. 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.

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

The network configuration information collecting means collects network configuration information which is information on the configuration state of the network between the own communication terminal and other communication terminals.

The network configuration information storage means stores the network configuration information.

The network configuration information means stores the network configuration information newly collected by the network configuration information collection means when the network configuration information is recovered from the resume state, and is stored when the network configuration information storage means itself is in the resume state. After matching
The network configuration information stored in the network configuration information storage means is updated.

In the fourth aspect of the invention, the network configuration information collected by the communication terminal is restored from the resume state and is not updated until the same network configuration is obtained again, so that the terminal which has been restored from the resume state first. It is possible to avoid recognizing that the terminal, which is still in the resume state, has lost communication.

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

The resume state return detecting means detects that the self state has returned from the resume state.

When the resume state return detecting means detects that the resume state is returned, the resume state return notifying means notifies other communication terminals of the return from the resume state.

The resume-state returning means returns from the resume state when it is notified by another communication terminal that the resume state has been restored while the resume-state returning means is in the resume state.

In the fifth aspect of the invention, when returning from the resume state, other communication terminals can also be returned from the resume state, so that communication cannot be lost when returning from the resume state.

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

The investigation means investigates another communication terminal with which communication is possible.

The interruption instruction means gives an instruction to interrupt communication by the group while forming a group and communicating with another communication terminal.

The storage means stores the user existence history information including the identification information of the user who has belonged to the group in the past and the identification information of the user who currently belongs to the group when the interruption instruction means gives an interruption instruction.

The restart instruction means gives an instruction to restart the group.

The reading means reads the user existence history information from the storage means when the restart instruction is given by the restart instruction means.

The comparison designating means compares the user existence history information read by the reading means with the user identification information of another communicable communication terminal examined by the examining means, and identifies the users belonging to both. Specify the information.

The group creating means creates a group according to the user identification information designated by the comparison designating means and restarts.

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

The interruption instruction means gives an instruction to interrupt the communication by the group while forming a group and communicating with another communication terminal.

The first storage means, when the interruption instruction means gives an interruption instruction, selects and saves certain shared data from the shared data.

The second storage means stores shared data storage status information including the identifier of the shared data stored in the first storage means and the identifier of the deleted shared data.

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

The difference management means detects the difference of the contents changed when updating the shared data in the group,
A data difference identifier is added to this difference content.

The data management means manages the shared data currently being edited and the difference contents.

The departure detecting means detects the departure of the communication terminal from the group.

At the time of departure detected by the departure detecting means, the difference information storage means adds and stores the user identifier of the withdrawn communication terminal to the data difference identifier relating to the difference contents at the time of departure.

The information acquisition request receiving means receives the latest data information acquisition request from the rejoined communication terminal when the separated communication terminal rejoins the group.

When the information acquisition request receiving means receives the latest data information acquisition request, the difference content extracting means is a data difference identifier corresponding to the user identifier of the rejoined communication terminal stored in the difference information storage means. Is used to extract the difference contents at the time of leaving from the data management means.

The difference identifying means calculates re-joining difference information from the difference contents drawn out by the difference contents drawing means from the shared data being edited when the data managing means re-joins.

The transmitting means transmits only the rejoining difference information calculated by the difference identifying means to the rejoined communication terminal.

In the eighth aspect of the invention, by managing the difference in shared data generated by editing, it is possible to obtain the difference between the current shared data and the shared data at the time of leaving when the user rejoins. By transmitting only the difference obtained in this way, it is possible to achieve the effect that less data needs to be transmitted than in the case of transmitting the entire shared data in order to make the shared data between users the same. It is possible.

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

The data management means manages the shared data currently being edited in the group.

The departure detecting means detects the departure of the communication terminal from the group.

The history information management means stores the shared data being edited at the time of leaving by the leaving detecting means and the user identifier of the leaving communication terminal.

The information acquisition request receiving means receives the latest data information acquisition request from the rejoined communication terminal when the separated communication terminal rejoins the group.

When the information acquisition request receiving means receives the latest data information acquisition request, the difference identifying means stores the shared data of the history information management means held at the time of leaving,
When the data management unit rejoins, the rejoining difference information with the shared data being edited is calculated.

The transmitting means transmits only the rejoining difference information calculated by the difference identifying means to the rejoined communication terminal.

In the ninth invention, the shared data at the time when the user leaves the conference is held, and when the user rejoins the difference data, the difference between the shared data at the time when the user leaves and the current shared data is retained. The required difference can be obtained by calculation. By transmitting only the difference obtained in this way, it is possible to achieve the effect that less data needs to be transmitted than in the case of transmitting the entire shared data in order to make the shared data between users the same. It is possible.

[0096]

【Example】

<First and Second Inventions> First, an outline of an embodiment of the present invention is shown in FIG.
It will be described based on.

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 determined 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, the communication information control unit 2 clears the transfer control information in its own control unit and informs the communication partner specifying unit 1 when the user information is in communication impossible due to an abnormality in the communication partner. And sends an instruction to delete the device from the group of communicable devices.

Furthermore, 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 uses 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.

First Embodiment A first embodiment 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 embodiment.

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 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. A concrete example of the inside of the communication partner identifying unit 11 has the configuration shown in FIG.

The communication partner identifying unit 11 in 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 the information based on the device received from other communication devices and the information collected by the device.

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, stores, etc. 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 of 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 in each section.

An example of storing information based on the 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 list of devices communicable by the device for each physical identifier 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 person information management table, and when broadcasting to the group, 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 / 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 a user communicates information to a desired partner, the communication partner specifying unit 11 receives information as to whether or not the user or the partner group can communicate.

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 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 capable of communication has become disabled as a result of processing the information exchanged and held in its own limiting unit, the communication partner identifying unit 11 sets the information as a 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 partner is communicating. Perform processing to clear information.

When the user receives the notification of the disappearance of the partner who is currently transferring information from the communication partner specifying unit 11, the user stops the 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 is 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).

Second Embodiment A second embodiment of the present invention will be described with reference to the drawings.

FIG. 6 shows an example of the configuration of the communication control apparatus according to this embodiment.

This apparatus includes a communication partner identifying section 21, a communication information control section 22, a communication information storing section 23, and a communication information saving section 24.
It has.

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 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 23.

When the extinction 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 the information for 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 the 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 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 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 unit 21 processes the information exchanged and held in the self identifying unit and determines that the device which can communicate is disabled, the communication partner identifying unit 21 sets the communication information as a communication partner disappearance signal. 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 when the communication is performed 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.

When the user receives the notification of the disappearance of the partner who is currently transferring the 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 the communication with the device whose information has been saved becomes possible again, the communication partner identifying 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 judges 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 opponent 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 identifying 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.

Third Embodiment A third embodiment 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 this embodiment.

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 / 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 a user communicates information to a desired partner, the communication partner identification unit 31 receives whether or not it is possible to communicate with the partner or a group of partners. 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.

If the information on standby is ready to be sent, the information is sent 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.

When receiving the communication partner disappearance signal, the broadcast communication information control section 32 treats the other party as successful transmission for the time being, if it is communicating with the other party, and advances the processing to all the broadcast destinations. 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.

The specific processing flow is shown in the first embodiment.
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.

Fourth Embodiment A fourth embodiment of the present invention will be described with reference to the drawings.

FIG. 9 shows an example of the configuration of the communication control apparatus according to this embodiment. 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 on the communicable device owned by itself with each device, or based on the information on 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 unit 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.

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 third embodiment.

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 the 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 the broadcast is continued at the other party who deleted the device, the same process as in the third embodiment 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.

[0187] 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.

Fifth Embodiment A fifth embodiment of the present invention will be described with reference to the drawings.

FIG. 10 shows an example of the configuration of the communication control device according to this embodiment. 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 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 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 the user or the partner group can communicate.

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 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 to 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 becomes impossible is transferred to the communication partner specifying unit 51, and the communication partner specifying unit 51 which has received the information performs the processing to disable 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.

Sixth Embodiment A sixth embodiment of the present invention will be described with reference to the drawings.

FIG. 11 shows an example of the configuration of the communication control device according to this embodiment. 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 section 61 exchanges information of the communicable device owned 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 broadcast communication information control unit 62 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 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 performs reliable broadcast communication processing in order to reliably transfer the transfer information sent 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.

[0207] 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 whether or not the user or the partner group can communicate.

The broadcast destination may be registered in the broadcast list by designating a plurality of broadcast destination devices from the user, or may be 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 communication partner identifying unit 61 in the list.

When the transfer information from the user is broadcast, if it is communicable, the broadcast identifier for the other party is received from the broadcast communication information control unit 62, and it is set as additional information in the transfer 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 broadcast identifier information 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 the device or the device group cannot communicate with the other device 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.

<Third to Fifth Inventions> Embodiment 1 FIG. 12 shows an example of the configuration of the information processing apparatus 400 in this 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 wireless transmission / reception unit 403 is the communication control unit 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 unit 401, the connection setting information for specifying the communication connection for transmitting the information is input to the connection setting unit 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.

Destination header generation section 312 adds connection identification information and identification information of the partner apparatus to the transmission user information as a destination header, and outputs it to information channel modulation section 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 modulation section 322 and the control channel modulation section 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 by the antenna 331 from other stations are converted to a baseband band by the down-converting unit 326 and then guided to the control channel demodulating unit 328 and the information channel demodulating 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 identification unit 317 searches the destination header added to the user information, and whether or not the received information is addressed to the own station. 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, group setting is performed 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 communication-enabled-device identifying section 314 can communicate with this communication device if the received control information contains the device identification information and 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 the 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.

If the comparison results are in agreement, it is not necessary to rewrite the contents of the communicable device storage section 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 this information processing apparatus comes close to and the radio waves transmitted to each other are received with the electric field strength of a certain level or more, 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 led 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 in accordance with 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 storage unit 315 is periodically transmitted, and during the predetermined time period, the communication terminal device does not need to communicate at all. 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 setting is made, the connection setting is made next.

The application processing section 401 selects the group set by the group setting section 313 and sends a connection setting command signal to the connection setting section 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 unit 404.

The resume control section 404 monitors whether the information processing apparatus 400 is powered on or off, and when it detects that the power is turned off, the application processing section 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 state 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, respectively. 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 resume, the flags indicating that the device is in resume 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 consisting of a connection identifier and a flag set when the group to which the connection is set is in resume.

When the user information is transmitted from the application processing unit 401, the connection setting unit checks whether or not the group in 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, description will be made regarding the processing when the information processing apparatus 400 in the resume state is turned on again to recover from the resume state.

When the resume control section 404 detects the return from the resume state, it sends a resume return message to another information processing apparatus.

The information processing apparatus that 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 returns 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 maintained. Then, it becomes possible to communicate.

Embodiment 2 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 control unit 404 detects that the resume state has been restored, the resumable device storage unit 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, the communicable device storage unit 315 inputs the held list of communicable devices from the communicable device identifying unit 314 if the comparison result of the comparison circuit 316 does not match. To update by.

However, when the flag is set, 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 comparison result of the comparison circuit 316 matches when the flag is set, the flag is cleared and the operation of returning from the resume state is completed.

By operating the communicable device storage unit 315 in this way, the recovery from the resume state is not completely simultaneous, and the information processing device that has previously recovered from the resume state 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.

[0267] Example 3 describes a third embodiment.

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.

The communication control unit 402 and the wireless transmission / reception unit 403 are in the reception waiting state in which the power is not stopped and the resume recovery message can be received and necessary processing can be performed even in the resume state. .

When the resume control unit 404 detects the return from the resume state, the resume control unit 404 transmits a resume return message 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 timing at which all the information processing apparatuses return from the resumed state, so that when the operation is resumed, the other information processing apparatuses are still in the resumed 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.

<Sixth and Seventh Inventions> First Embodiment 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, the user name, information about the user such as 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 the user belonging to the 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 the data sharing, the application suspending 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 interruption processing of the application. 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 nth 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.

The following processing is executed by an arbitrary user starting the application and designating the restart.

(Step B1) 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 n-th 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.

Also, 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 embodiment, 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.

Embodiment 2 The data sharing restart processing of the second embodiment 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 unit 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 nth 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, and 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 everyone in the group does not store the shared data, it is dealt with by the following embodiment.

[0328] The data sharing resumption process of Example 3 the third embodiment will be described with reference to the flowchart of FIG. 25.

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 for 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 unit 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 unit 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 data sharing is resumed.
Data sharing can be resumed even if the data is not stored in 54.

<Eighth and Ninth Inventions> Embodiment 1 This embodiment will be described with reference to the drawings.

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

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 unit 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 sent out. 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 of the jointly updated file regularly (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).

When leaving the group, the member leaving according to the procedure 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 which received the withdrawal information give 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 having received the latest file information acquisition request execute the process in the procedure 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.

If 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 leaving information. If there is a leaving request from the group, the file difference identifier in the difference information storage section is saved (step J
1) Save the file currently being edited (step J
2).

Embodiment 2 A second embodiment will be described below.

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

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 the file is currently being edited. Calculate the difference between.

The members in the group having received the latest file information acquisition request execute the process 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, 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 at the same time.

If 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.

[0368] The embodiment of Example 3 Third will be described.

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

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 unit 521 the information necessary for collaborating with other communication devices.

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

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.

When leaving a group, the member leaving according to the procedure shown in FIG. 28 broadcasts the leaving information including 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 have 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 write the file. 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 by the information control means 522 to the members in the group 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, 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.

[0383]

According to the communication control device of the first aspect of the present invention, it becomes possible to quickly cut off a session to a device that cannot communicate in reliable user information, and to quickly grasp the state of the communication path. This will enable efficient information transfer.

According to the communication control apparatus of the second invention, when the transfer of the user information fails, the information is reflected in the processing unit for identifying the communicable device, and the useless transmission to the incommunicable device is performed. It is possible to avoid the above, and it is possible to reduce the waste of communication resources, which leads to the improvement of the total performance.

In the third invention, the start of the resume state and the restart of the operation are notified to the surrounding communication terminals, and the notified communication terminal suspends the communication with the apparatus being resumed until the operation is restarted. 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.

According to the fourth aspect of the invention, the network configuration information collected by the communication terminal is restored from the resume state and is not updated until the same network configuration is obtained again. It is possible to avoid recognizing that the terminal, which is still in the resume state, has lost communication.

In the fifth invention, when the resume state is restored, other communication terminals can also be restored from the resume state, so that communication cannot be lost when returning from the resume state.

In the sixth aspect of the invention, the user identification information belonging to or belonging to the group for data sharing when the data sharing is suspended is saved, the communicable device is checked when the data sharing is resumed, and the user information request is sent to the corresponding device. The user identification information obtained in this way is compared with the user identification information saved at the time of the interruption, and the users at the time of interruption and at the time of restart are created by specifying the users belonging to both and creating a group. Data sharing can be restarted even if they differ.

In the seventh invention, when data is interrupted,
Shared data is selectively saved, the file name is associated with the shared data identifier and saved as the shared data save status, the shared data save status is read when the data is restarted, the shared data is read with the file name, and the saved If not, by sending a data transfer request with a shared data identifier to a specific device in the group, the shared data is acquired, and even if all shared data is not saved at restart, Sharing is possible.

In the eighth aspect of the invention, by managing the difference in shared data generated by editing, it becomes possible to find the difference between the current shared data and the shared data at the time of leaving when the user rejoins. By transmitting only the difference obtained in this way, it is possible to achieve the effect that less data needs to be transmitted than in the case of transmitting the entire shared data in order to make the shared data between users the same. It will be possible.

In the ninth invention, the shared data at the time when the user leaves the conference is held, and when the user rejoins the difference data, the difference between the shared data at the time when the user leaves and the current shared data is retained. The required difference can be obtained by calculation. By transmitting only the difference obtained in this way, it is possible to achieve the effect that less data needs to be transmitted than in the case of transmitting the entire shared data in order to make the shared data between users the same. It will be possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing the concept of the present invention.

FIG. 2 is a block diagram of a first embodiment of the present invention.

FIG. 3 is a diagram illustrating a configuration example of a communication partner limiting unit according to the first embodiment.

FIG. 4 is a diagram illustrating a storage configuration example of management storage information of a communication partner limiting unit according to the first embodiment.

FIG. 5 is a diagram illustrating an example of a specific processing flow according to the first exemplary embodiment.

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

FIG. 7 is a diagram illustrating an example of a specific processing flow according to the second embodiment.

FIG. 8 is a diagram illustrating a configuration example when performing broadcast communication according to a third exemplary embodiment.

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

FIG. 10 is a diagram showing a configuration example in a case where communication partner identification information is updated by reliable communication control according to the fifth embodiment.

FIG. 11 is a diagram showing a configuration example in a case where communication partner identification information is updated by reliable broadcast communication control according to the sixth embodiment.

FIG. 12 is a configuration diagram of an information processing device.

FIG. 13 is a table related to group settings included in a group setting unit.

FIG. 14 is a table relating to group settings included in a group setting unit.

FIG. 15 is a flowchart showing a procedure for updating a communicable terminal list.

FIG. 16 is a configuration example of an application processing unit.

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.

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 transmission / reception unit 404 resume control unit 510 information processing apparatus main body 511 antenna 520 wireless transmission / reception unit 521 communication control unit 522 information control unit 523 group management unit 524 difference control unit 530 file management unit 531 difference management Means 532 Difference Information Storage 533 Difference Identification Means 534 File Storage

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] October 4, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

Title: Communication control device and communication control method

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction content]

[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.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinzo Matsubara 1-30 Oedonaka, Kita-ku, Osaka City, Osaka City Umeda Sky Building Tower West Co., Ltd. Toshiba Kansai Branch Office (72) Inventor Yosuke Taka Osaka Prefecture 1-30 Oyodo Naka, Kita-ku, Osaka Umeda Sky Building Tower West Stock Company Toshiba Kansai Branch Office

Claims (13)

[Claims] 1. A communication partner identifying means for identifying another device capable of communicating with the own device wirelessly and outputting a partner disappearance signal when it is determined that communication is not possible for the identified other device in communication. , Communication information storage means for transmitting a confirmation signal to another device capable of communicating based on the control information wirelessly, and performing communication after receiving a reception confirmation signal from the other device; When a partner extinction signal relating to an inside device is input, the communication information storage device is provided with a communication control means for processing control information in the communication information storage means to avoid communication with the device incapable of communication. Communication control device. 2. The communication control means updates the control information in the communication information storage means with new control information when a partner extinction signal relating to a device currently in communication is input. Communication control device. 3. The communication control means deletes the control information on the currently communicating device of the communication information storage means when a partner extinction signal relating to the currently communicating device is input. The communication control device described. 4. A temporary storage unit for temporarily storing control information of the communication information storage unit, wherein the communication partner identification unit determines that the device that has output the partner disappearance signal can communicate with the partner. The communication control means outputs a generation signal, and when the communication extinguishing signal regarding the device currently in communication is input, the communication control means temporarily saves the control information regarding the equipment in the temporary storage means, and the communication control means keeps constant from the communication opponent specifying means The communication control device according to claim 1, wherein when the other party generation signal regarding the device for which the control information is saved is received within the time, the saved control information is restored to the communication information storage means. 5. A communication partner identifying means for identifying another device capable of communicating with the own device, and a confirmation signal wirelessly transmitted to the other device capable of communicating based on the control information, and a reception confirmation signal from the other device. The communication information storing means for performing communication after receiving the message and outputting the communication disable signal in the case of transmission failure, and receiving the communication disable signal due to the transmission failure from the communication information storage means A communication control device comprising: a communication control unit that deletes from a communicable device specified by the partner specifying unit. 6. A communication terminal having a resume function, wherein a resume state detecting means for detecting that the terminal itself is in a resume state and returning from the resume state, and the resume state detecting means are in a resume state. When it detects that the resume state is notified to the other communication terminal that is in communication, that it is in the resume state, and when the resume state detecting means detects that the resume state is restored, the resume state is returned. And a communication interrupting means for interrupting communication with the communication terminal when notified by the other communication terminal that the resume status has been reached, When the terminal notifies you that it has recovered from the resume state, this suspended communication is restarted. Communication control apparatus characterized by comprising further a stage. 7. A communication terminal having a resume function, which comprises: network configuration information collecting means for collecting network configuration information, which is information on a network configuration state between the own communication terminal and another communication terminal, and network configuration information. And network configuration information newly stored by the network configuration information collection unit when returning from the resume state, stored when the self of the network configuration information storage unit is in the resume state. A communication control device comprising: a network configuration information unit that updates the network configuration information stored in the network configuration information storage unit after the network configuration information matches. 8. A communication terminal having a resume function, including resume state return detecting means for detecting that the user has returned from the resume state, and other means for detecting that the resume state return detecting means has returned from the resume state. Resume status return notifying means for notifying that the communication terminal has recovered from the resume status, and the resume status for recovering from the resume status when another communication terminal notifies that it has recovered from the resume status when it is in the resume status. A communication control device comprising a return means. 9. A communication terminal which is communicable with each other and which constitutes a group for performing communication by sharing data with each other, and an investigation means for investigating other communicable communication terminals, and constituting a group. Interruption instruction means for instructing interruption of communication by a group during communication with another communication terminal, and identification information of a user who has belonged to the group in the past when the interruption instruction is given by this interruption instruction means and the current belonging to the group. Storage means for storing user existence history information composed of user identification information, restart instruction means for instructing restart of a group, and the user existence history information from the storage means when restart instruction is given by the restart instruction means The reading means for reading, the user existence history information read by the reading means, and the other communicable information investigated by the examining means. It comprises a comparison designating means for comparing with the user identification information of the terminal and designating the user identification information belonging to both, and a group creating means for creating a group by the user identification information designated by the comparison designating means and restarting it. A communication control device characterized by the above. 10. A communication terminal forming a group capable of communicating with each other and sharing data with each other, wherein communication of the group is performed during communication with another communication terminal forming the group. Interruption instruction means for instructing interruption, first storage means for selecting and saving certain shared data from the shared data when the interruption instruction is given by the interruption instruction means, and the first storage means And a second storage unit for storing shared data storage status information including the shared data identifier and the deleted shared data identifier. 11. A restart instruction means for instructing restart of a group, a read means for reading shared data storage status information from the second storage means when the restart instruction means restarts the group, and the read means. Extraction means for extracting the identifier of the shared data deleted from the read shared data storage status information, and transmission requesting transmission of the shared data related to the identifier extracted by the extraction means to other communication terminals in the group 11. The method according to claim 10, further comprising request means.
The communication control device described. 12. A group is created between a plurality of communication terminals,
A communication terminal that performs sharing work by performing communication in this group, detects a difference between the contents changed when updating shared data in the group, and assigns a data difference identifier to the difference contents. A difference management means, a data management means for managing the shared data being edited and the contents of the difference, a departure detection means for detecting the departure of the communication terminal from the group, and a departure detected by the departure detection means, A difference information storage unit that assigns and stores the user identifier of the withdrawn communication terminal to the data difference identifier relating to the difference contents at the time of leaving, and the rejoined communication terminal when the withdrawn communication terminal rejoins the group. Information acquisition request receiving means for receiving the latest data information acquisition request from the device, and this information acquisition request receiving means for receiving the latest data information acquisition request A difference content extracting means for extracting the difference content at the time of leaving from the data managing means using a data difference identifier corresponding to the user identifier of the rejoined communication terminal stored in the difference information storing means, Difference identifying means for calculating re-joining difference information from difference contents drawn out by the difference content drawing means and shared data being edited when the data managing means re-joins, and the difference identifying means to the re-joined communication terminal A communication control device comprising: a transmission unit that transmits the difference information upon rejoining calculated by the above. 13. A group is generated between a plurality of communication terminals,
A communication terminal that performs shared work by performing communication within this group, and a data management unit that manages shared data that is being edited in the group, and a departure detection that detects departure of the communication terminal from the group. Means, history information management means for storing shared data being edited at the time of leaving detected by the leaving detecting means and a user identifier of the leaving communication terminal, and when the leaving communication terminal rejoins the group, Information acquisition request receiving means for receiving the latest data information acquisition request from the rejoined communication terminal; and when the information acquisition request receiving means receives the latest data information acquisition request, the history information management held at the time of leaving. Difference identifying means for calculating rejoining difference information between the shared data of the means and the shared data being edited when the data managing means rejoins, Communication control apparatus characterized by serial to rejoin the communication terminal said difference identification means become more and transmitting means for transmitting a rejoin time difference information corresponding calculated.