JP3258474B2 - Control method of teleconference communication terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teleconference communication terminal having at least a teleconference communication function, a facsimile communication function, and a document storage function, and performing a teleconference communication session by referring to stored conference material document information. It relates to a control method.

[0002]

2. Description of the Related Art In recent years, a teleconference communication terminal having a teleconference communication function, a facsimile communication function, and a document storage function and performing a teleconference communication session with reference to stored conference material document information has been put into practical use.

[0003] In such a remote conference communication terminal, there are two types of operations when an incoming call is detected, a manual incoming call operation for calling the user and an automatic incoming call answering operation for automatically answering the incoming call. The conference communication terminal can be set to execute any of these operations.

[0004]

However, such a conventional apparatus has the following disadvantages.

That is, when a manual incoming call operation is set,
When the user on the calling terminal side performs a calling operation, the user on the receiving terminal side needs to be on standby at the own terminal, necessitating a preliminary meeting or the like, which is inconvenient in operation.

[0006] When an automatic call answering operation is set,
When a call is received in a state where the receiving terminal is not ready, there are inconveniences, such as a screen shot of a complicated venue for preparation being displayed on the partner terminal and unnecessary voice being sent.

The present invention has been made in view of such circumstances, and has as its object to provide a method of controlling a teleconference communication terminal that can improve usability.

[0008]

SUMMARY OF THE INVENTION The present invention has at least a teleconference communication function, a facsimile communication function, and a document storage function, and performs a teleconference communication session by referring to stored conference material document information. In the terminal control method, the terminal control method includes destination information of a partner terminal that automatically responds to an incoming call and initial state information for specifying an initial operation mode of each communication element of the teleconference communication function when a call is made from the partner terminal. A storage unit storing at least one response identification information, wherein the contents of the calling number information element included in the call setting message received at the time of detecting the incoming call are stored in the destination information of any one of the response identification information registered in the storage unit; When it matches, the incoming call operation is performed, and the state of the remote conference communication function is set to a state corresponding to the initial state information included in the response identification information. While setting the operation mode of the communication element, when the contents of the calling number information element do not match the destination information of any response identification information registered in the storage means, an operator calling operation is performed. is there.

A method of controlling a teleconference communication terminal having at least a teleconference communication function, a facsimile communication function, a document storage function, and a document record output, and performing a teleconference communication session with reference to the stored conference material document information. , The caller identification information including the destination information of the partner terminal that automatically responds to the incoming call and the value of the calling subaddress, and the initial operation mode of each communication element of the teleconference communication function when a call is made from the partner terminal. Storage means for storing at least one piece of response identification information comprising initial state information for
The call setting message received upon detection of the incoming call includes a calling subaddress information element, and the calling number information element included in the call setting message and the contents of the calling subaddress are any of the responses registered in the storage means. When the values of the destination information and the calling sub-address of the calling party identification information included in the identification information match, the incoming call operation is performed, and a state corresponding to the initial state information included in the response identification information is performed. While setting the operation mode of the communication element, the calling subaddress information element is not included in the call setting message received upon detection of the incoming call, or the content of the calling number information element or the calling subaddress included in the call setting message is Destination information and calling subaddress included in any response identification information registered in the storage means When both values do not match, in which to perform the operator call operation.

In a control method of a teleconference communication terminal having at least a teleconference communication function, a facsimile communication function, and a document storage function and performing a teleconference communication session with reference to the stored conference material document information, Response identification consisting of identification information of a responding terminal and initial state information indicating an initial operation state for designating an initial operation mode of each communication element of the teleconference communication function when a call is made from the opposite terminal. A call setting message received upon detection of an incoming call, wherein the call setup message includes a user / user information element, and identification information included in the user / user information element is registered in the storage means; If the value matches the value included in any of the response identification information, The state corresponding to the initial state information, while setting the operation mode of each communication element of the remote conference communication function, or does not include the user-user information element in the call setting message received when a call detection, or,
When the identification information included in the user / user information element included in the call setting message does not match the value of any response identification information registered in the storage unit,
An operator calling operation is performed.

A method for controlling a remote conference communication terminal having at least a remote conference communication function, a facsimile communication function, and a document storage function, and performing a remote conference communication session with reference to the stored conference material document information. Storage means for storing one or more pieces of response identification information including initial identification information for designating an initial operation mode of each communication element of the teleconference communication function when a call is made from the partner terminal. The bit allocation signal notified on the first information channel after the incoming call response includes the identification information of the other terminal, and the value of the identification information is the value of any of the response identification information registered in the storage means. When the identification information matches, the operation mode of each communication element of the teleconference communication function is set to a state corresponding to the initial state information included in the response identification information. While the bit allocation signal notified on the first information channel after the incoming call response does not include the identification information of the other terminal, or the value of the identification information included in the bit allocation signal is stored in the storage means. When it does not match the identification information of any response identification information registered in the terminal, an incoming call is answered, and the operation mode of each communication element of the teleconference communication function is set to an initial operation mode corresponding to a predetermined non-registered terminal. It is something to do.

[0012]

[0013]

[0014]

[0015]

[0016]

Therefore, it is possible to appropriately set the partner terminal that performs the automatic incoming call operation and the partner terminal that performs the manual incoming call operation, thereby improving the usability of the user. In addition, since the initial state of the own terminal at the time of the incoming call operation can be set, for example, it is possible to appropriately set, for example, to mute the voice first, turn off the screen, or freeze the screen after the incoming call. Thus, the usability of the device is improved.

[0017]

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

FIG. 1 shows a teleconference communication system according to an embodiment of the present invention.

In this case, the teleconference communication session includes:
Two teleconferencing communication devices AGC connected to ISDN
1. AGC2 is participating, so in this case,
The connection mode of this teleconference communication session is a one-to-one point-to-point connection.

Each of the remote conference communication devices AGC
1, AGC2 is a teleconference communication system SAGC
A video monitor / video camera device TVMC connected to the teleconference communication system SAGC, and
It is composed of a group 3 facsimile machine G3F. Here, this group 3 facsimile machine G3F
Are also used as an input means for an original image and a recording means for an image such as a document.

FIG. 2 shows a teleconference communication system SAG.
An example of C is shown.

In FIG. 1, a system control unit 1 performs control processing of each unit of the teleconference communication system SAGC,
The system memory 2 is for performing control processing such as a facsimile communication function, a telewriting communication function, a remote conference communication function, and a document storage function for storing document information such as conference materials. A control program to be executed and data such as various parameters required for executing the control program are stored, and a work area used by the system control unit 1 at the time of execution is stored. This is for storing various information unique to the teleconference communication system SAGC.

DMA (Direct Memory Access)
The control device 4 is for exchanging data at high speed between peripheral devices of the system control unit 1 without intervening the system control unit 1, and the interrupt control unit 5 is provided with a system for generating a large number of interrupt signals. This is for controlling the output to the control unit 1.

The encoding / decoding section 6 encodes and compresses image data using a predetermined encoding method (for example, an encoding method corresponding to the group 4 facsimile function),
The image processing section 7 is for decoding the image information in the encoded and compressed state into the original image data. The image processing section 7 is for performing various image processing such as resolution conversion and scaling processing of the image data. Things.

The keyboard device 8 is for inputting character code data to the teleconference communication system SAGC, and the magnetic disk device 9 is for storing a large amount of various document information and the like.

The touch panel device 10 is for inputting handwritten input data for a telewriting function and for operating the operation of the teleconference communication system SAGC. This is for taking in the generated handwritten input data as data of a predetermined format.

The liquid crystal display device 12 displays image information such as a conference material document image and other conference information, and also displays a menu for operating the remote conference communication system SAGC. The display control unit 13 is for controlling the content of the screen displayed on the liquid crystal display device 12.

The analog line interface 14 is for connecting an external group 3 facsimile machine G3F, and the group 3 facsimile modem 15 is
This is for executing a modulation / demodulation process for exchanging data with the group 3 facsimile apparatus G3F.

The serial interface 16 is for connecting the remote conference communication system SAGC to an external device such as a video conference communication device.

The communication control unit 17 connects to the ISDN,
A call control function in the D channel (signal channel);
It is for performing a facsimile communication function, a telewriting communication function, and a communication control function of a lower layer of the teleconference communication function in a channel (information channel). The video monitor / video camera device TVMC is connected to the communication control unit 17. The communication control unit 17 is connected to a microphone / speaker 18 for a telephone call with a partner terminal.

The system controller 1, system memory 2, parameter memory 3, DMA controller 4, interrupt controller 5, encoding / decoding unit 6, image processing unit 7, keyboard device 8, magnetic disk device 9, Touch panel control unit 1
1, display control unit 13, analog line interface 1
4. Group 3 facsimile modem 15, serial interface 16, and communication control unit 17
Each of them is connected to the system bus 19, and data transmission between these elements is mainly performed by the system bus 1.
9 is performed.

FIG. 3 shows an example of the communication control unit 17.

In FIG. 1, the ISDN interface circuit 21 is connected to the ISDN and has a function of processing the signal of the layer 1 of the ISDN and a function of integrating / separating the D-channel signal and the two B-channel signals. , D-channel signals are exchanged with the D-channel transmission controller 22, and the two B-channel signals are multiplexed /
It communicates with the separation device 23.

The LAPD channel transmission control device 22
This is for realizing the signal processing function of layer 2 of the channel. The multiplexing / demultiplexing device 23 multiplexes data of a plurality of media such as voices, moving images, and general-purpose data exchanged using the B channel, and multiplexes the data according to CCITT Recommendation H.264. In addition to forming frame data specified in H.221 and sending it to the line side, it separates data of a plurality of media multiplexed with the received frame data. The multiplexing / demultiplexing device 23 exchanges audio data with the audio CODEC device 24, exchanges two-channel general-purpose data with the LAPB control devices 25 and 26, and exchanges moving image data with an externally connected video monitor / camera. It is communicating with the device TVMC. The multiplexing / demultiplexing device 23 is described in Recommendation H.264. When the function of H.221 is not used, the ISDN interface circuit 2
Two B-channels separated by 1 into two LAPs
It acts as a selector that connects to the B control devices 25, 26 in any manner.

The voice CODEC device 24 is an ISDN B
This is for performing signal conversion processing of analog signal / digital data for transmitting an analog audio signal using a channel.

Group 3 facsimile modem device 27
Is for realizing the modem function of group 3 facsimile, and is a low-speed modem function (V.21 modem) for exchanging transmission procedure signals and a high-speed modem function (F-modem function mainly for exchanging image information) V.33 modem, V.29 modem, V.27ter modem, etc.).

The switch 28 is provided for the audio CODEC 24
Is connected to either the microphone / speaker 18 or the group 3 facsimile modem device 27. The operations of the switch 28 and the multiplexing / demultiplexing device 23 are controlled by the system control unit 1.

FIG. 4 shows this teleconference communication system S
2 shows an example of a hierarchical structure (protocol stack) of a communication protocol in various communication functions executed by the AGC.

The remote conference communication system SA
GC, as shown in FIG. 5, the video conference communication device TVG
C can function as an external terminal (see FIG. 4). In this case, the video conference communication device TVGC is connected via the serial interface 16 to realize a telewriting function, a bulk transfer function, and the like in the video conference communication session.

FIG. 6 shows an example of a call control procedure in a circuit switching mode performed by a terminal device connected to ISDN with ISDN.

That is, the originating terminal first sets the circuit switching mode as the transfer mode, sends a call setup message SETUP designating the destination terminal as the destination to the ISDN, requests the ISDN to set up a call with the destination terminal, and Sends a call setup message SETUP to the designated destination terminal to make a call. Further, the ISDN sends a call setting acceptance message CALL_PROC for notifying the call setting status to the calling terminal.

When the called terminal detects an incoming call, if the own terminal is ready to receive a call, it sends a call message ALERT to ISDN, and the ISDN sends a call message ALERT to the calling terminal to call the called terminal. Notify that it has started.

Upon receiving the incoming call, the called terminal sends a response message CONN to the ISDN, and the ISDN sends a response message CONN to the calling terminal to notify that the called terminal has accepted the call.

The ISDN sends a response confirmation message CONN_ACK to the destination terminal to confirm the response of the destination terminal, and at that time, an information channel (B channel) for data transmission between the calling terminal and the destination terminal. Is established.

Thus, data transmission using the information channel is performed between the originating terminal and the destination terminal according to the transmission control procedure set for the transmission function of each terminal.

When the data transmission is completed, the originating terminal sends a disconnect message DISC to the ISDN to request the release of the information channel, and the ISDN sends the release message R
An EL is sent to the calling terminal to notify the recovery of the information channel. On the other hand, the ISDN sends the disconnect message DI
An SC is transmitted to request the release of the information channel, and the destination terminal sends a release message REL to the ISDN to notify the restoration of the information channel.

Thus, the calling terminal sends a release completion message REL_COMP for notifying the completion of channel disconnection to IS
In response to the DN, the information channel between the calling terminal and the ISDN is released. At the same time, the ISDN sends a release completion message REL_COMP to the destination terminal,
The information channel between N and the terminating terminal is released. Thereby, the information channel set between the calling terminal and the called terminal is completely released.

As described above, the information channel is set between the calling terminal and the called terminal, data transmission is performed, and when the data transmission ends, the information channel is released.

As shown in FIG. 7A, each message for ISDN call setting is a protocol specification (format, format,
Protocol identifier)
A call number to identify which call the message is involved in, a message type to identify the content of each message, mandatory information elements that are always added to each message, and each message And additional information elements that are added as needed. Note that 0, 1, or a plurality of essential information elements are set according to the message type, and 0, 1, or a plurality of additional information elements are arranged according to the situation.

The call setup message SETUP has "communication capability" as an essential information element, as shown in FIG.
The additional information elements include, for example, "calling number",
"Originating subaddress", "Destination number", "Destination subaddress", "Lower layer compatibility", "Higher layer compatibility",
And it has information elements such as "user".

The outline of these information elements will be described.

The “transmission capability” information element indicates whether the content of the information to be transmitted is voice, unrestricted digital information, restricted digital information, 3.1 KHz audio, 7 KHz audio, or video. Capability, transfer mode indicating whether the switching function used is circuit switching or packet switching, information transfer speed indicating information transfer speed, information indicating information transfer mode, information indicating user information protocol, etc. Consists of

The “calling number” information element is the ISDN of the calling terminal.
The “calling subaddress” information element indicates a value of a subaddress set for the calling terminal (or calling user), the “calling number” information element indicates the ISDN number of the called terminal, and the “calling subaddress” information. The element indicates the value of the subaddress set for the destination terminal (or destination user).
Here, the subaddress is data of a predetermined number of digits (for example, an alphanumeric character string) that can be arbitrarily set by the user.

The "lower layer consistency" information element is to be used for a communication possibility check with the partner terminal,
The basic content is the same as the "communication capability" information element. Further, the "lower layer consistency" information element includes more detailed contents.

The "higher layer compatibility" information element is used for checking the compatibility with the partner terminal, and includes, for example, telephone, group 2 / group 3 facsimile, group 4 facsimile, mixed mode, teletex,
Displays which terminal function is provided among terminal functions such as Videotex, Telex, Audio-Visual, and Message Handling System.

The “user / user” information element is used for transmitting information between users, and the content of the “user / user” information element is transmitted transparently without being interpreted by ISDN. It is transmitted to the other user.

Now, this teleconference communication system SA
In the GC, in the B channel, the CCITT Recommendation H.264 is used.
221 is exchanged in a multi-frame format.

As shown in FIG. 8, one multi-frame MFL is composed of eight sub-multi-frames SMF1 to SMF.
8 in each sub-multiframe SMF1 to SMF1.
The SMF 8 is composed of two frames each. That is, one multi-frame MFL is composed of 16 frames FLM0 to FLM15.

Each of the frames FLM0 to FLM15
Is composed of 80 octets of data, as shown in FIG. 9, and the respective bit positions where those octets are arranged in bit order constitute subchannels SCH1 to SCH8.

The eighth bit of the first to eighth octets is a frame synchronization signal (Frame Ali).
The 8th bit of the 9th to 16th octets constitutes a bit rate allocation signal (Bit rate Allocation).
n Signal) BAS. Also, in the part of the 8th bit of the 17th to 80th octets of the sub-channel SCH8, data of an encryption channel for exchanging key information and the like for encrypting data is set in a part thereof. May be (optional).

As described above, the frame synchronization signal FAS
Are arranged in one frame FLM0 to FLM15, and the bit allocation is configured in units of a multi-frame MFL as shown in FIG.

That is, even frames FLM0, FLM
2,..., FLM14, second to eighth octets, followed by odd frames FLM1, FLM3,.
A horizontal synchronizing signal composed of an 8-bit data pattern “00110111” is arranged in the FLM 15, and a first octet of the odd-numbered frames FLM 1, FLM 3,. A synchronization signal is provided.

By detecting the horizontal synchronization signal and the vertical synchronization signal, the synchronization of one multi-frame MFL can be detected.

The 0th frame, the 2nd frame, the 4th frame
Bits N1, N2, N3, N4, and N5 of the first octet of the frame, the sixth frame, and the eighth frame are used to indicate a multiframe number. Of these, bit N5 is used to indicate whether a multi-frame number is used. As described above, since the data used for the multi-frame number is 4 bits, the multi-frame number changes in a descending order with values from 0 to 15, and the same multi-frame number appears every 16 multi-frames.

The tenth frame, the twelfth frame,
And the bit L of the first octet of the thirteenth frame
1, L2 and L3 are used to display connection numbers indicating the order of connection of the information channels carrying the frame among the information channels currently used. The bit R of the first octet of the fifteenth frame is reserved (reserved) for a future recommendation, and is normally set to 0.

The bit TEA of the first octet of the fourteenth frame is used to indicate that data cannot be transmitted due to an internal failure of the data terminal device.

The odd frames FLM1, FLM3,
.., Bit A of the third octet of FLM 15 is used to indicate whether frame synchronization or multi-frame synchronization has been established, or whether synchronization has been lost.

The odd frames FLM1, FLM3,
,..., The fifth octet, the sixth octet, the seventh octet, and the eighth octet of the FLM 15
C2, C3 and C4 are used to indicate a CRC (Cyclic Redundancy Check) code which is referred to for data error detection (ie, channel quality detection) of two consecutive frames (ie, sub-multiframes). The bit E of the fourth octet of the odd frames FLM1, FLM3,..., FM15 is used to indicate that a transmission error has been detected on the receiving side.

Further, as shown in FIG. 11, the bit rate allocation signal BAS includes the even frames FLM0, FLM2,
, FLM14, 8-bit data representing a capability BAS or a BAS command is arranged, and subsequent odd-numbered frames FLM1, FLM3,.
A double error correction code for error correcting the value of the capability BAS or BAS command transmitted in the immediately preceding frame is arranged.

The transmission of the data of the multi-frame MFL is performed in the order of the frame numbers, and each of the frames FLM0 to FLM15 is transmitted in the octet order from the first octet to the 80th octet as shown in FIG. Octets are transmitted with the first bit first.

That is, each frame FLM0
In the FLM 15, the first bit of the first octet is transmitted first, and the eighth bit of the 80th octet is transmitted last.

The remote conference communication system SA
In the GC, data transmission is normally performed using two information channels, and an example of a transmission procedure at that time is shown in FIG.
Shown in This transmission procedure is described in CCITT Recommendation H.264. 2
42 and CCITT Recommendation H.42. Follow 320.

First, the calling terminal calls the destination terminal, performs a call setting procedure on the signal channel, secures one information channel (hereinafter, referred to as a first channel) (phase A), and sets the information channel. Frame synchronization is performed while exchanging frame data in which PCM audio data (A-law or μ-law, 64 Kbps) is set on one channel (frame mode). When frame synchronization is established, capability BAS data and command BAS data are mutually exchanged. Exchange (phase B1-1), the transmission mode to be used at that time is determined, and an additional call setting request for securing the second information channel is started (phase B1-2).

Then, the common mode having the highest function is selected from the contents exchanged between the transmission modes at that time (phase B1-3), and the function is transmitted from the calling terminal to the called terminal in the selected operation mode. Is transmitted to set the parameters common to the device functions of the calling terminal and the called terminal (phase B2). Thus, in the first channel, for example, data transmission of audio data (16 Kbps) and data transmission of moving image data (46.4 Kbps) corresponding to the transmission mode selected at that time are performed (phase C). .

When the first channel starts data transmission in the frame mode, a call setup procedure is performed on a signal channel for a second information channel (hereinafter referred to as a second channel) (phase CA), and the second channel is established. Then, frame data including only the frame synchronization signal FAS and the bit allocation signal BAS are exchanged using the second channel to establish frame synchronization and multi-frame synchronization (phase CB1-11). Establish synchronization between channels (phase CB1-1)
2).

When the synchronization of the two information channels is completed,
A transmission mode is set by transmitting a BAS command from the calling terminal side (phase CB1-2), the transmission mode is switched to the set contents (phase CB1-3), and common parameters are set (phase CB3).

When the initialization of the second channel is completed in this way, after that, in a state where the frame data exchanged on the first channel and the frame data exchanged on the second channel are synchronized, for example, Using two information channels, audio data, video data, and general-purpose data are 56 Kbps and 62.4 K, respectively.
Data transmission is performed by assigning transmission rates of bps and 6.4 Kbps.

When ending such data transmission, first, the second channel is disconnected. At this time, the first
A procedure for setting a common mode is performed for voice data transmission performed only on the channel (phase CD).
1) The mode of the second channel is switched to the mode 0F of the frame mode (phase CD2). At this time, the first channel and the second channel are asynchronous, and the second channel is in a state where a call is held in a transmission state of only the frame synchronization signal FAS and the bit allocation signal BAS, and the signal channel is disconnected. The call on the second channel can be released by the release procedure.

In the first channel, the phase CD1
For example, during the phase CD2, in the frame mode, for example, audio data and moving image data are transmitted at a total transmission speed of 62.4 Kbps, and when the operator of one terminal ends the call, the transmission of the moving image data ends. In order to use the transmission capacity of all the first channels including the transmission capacity of the moving image data for audio transmission, mode 0 is used.
F (Phase D2), after which the call of the first channel can be released by the call disconnection release procedure of the signaling channel.

Thus, the call disconnection release procedure is executed on the signal channel for the first channel and the second channel (phase E), and the video conference communication between the two terminals ends.

As described above, the remote conference communication system S
In the AGC, first, one information channel (first channel) is secured and a frame mode is established. Then, the transmission rate of audio data and moving image data is allocated on the first channel to perform data transmission in a transient mode. If the second information channel (second channel) can be set at the same time while performing the above, the second channel is secured by the call setting procedure of the signaling channel. Then, the first channel transmitting in the transient mode is synchronized with the newly secured second channel, and when the channel synchronization is established, the transmission speed of the audio data and the moving image data is reset. In order to utilize the increased transmission capacity of the information channel, the encoding rule (encoding method) of the audio data and the moving image data is changed so as to exchange higher quality audio data and moving image data. I have.

When ending the data transmission, it is necessary to change from the mode in which the transmission path in which both the first channel and the second channel are synchronized to the mode in which only the first channel is used. is there. Therefore, in this case, first, each of the encoding rules of the audio data and the moving image data is set to a method of optimizing the transmission capacity of the first channel to 62.4 Kbps, and the transmission mode is changed to the transmission mode of only the first channel. In the second channel, the state of synchronization with the first channel is stopped, and after the mode shifts to mode 0F in which user data is in an idle transmission state, the call is released by releasing the signal channel. /release. Further, the first channel is switched from two types of media transmission of audio data and moving image data to mode 0F, which is a transmission mode of only audio data, and then disconnects / releases the call by a call disconnection / release procedure of the signaling channel. . The first channel can be disconnected / released after directly changing the mode to the mode 0F without switching the mode to the two types of media transmission of the audio data and the moving image data. Also,
The accounting information and the like obtained in the call disconnection release procedure are managed for each channel.

In the present embodiment, when an incoming call is detected, response identification information for identifying a partner terminal that automatically responds is formed and stored. Here, the response identification information includes user response identification information for identifying a partner terminal by user identification information (user ID) set in a “user / user” information element of the call setup message SETUP, and user response identification information of the call setup message SETUP. It consists of terminal response identification information for identifying a partner terminal by the "calling number" information element and the "calling subaddress" information element.

The user response identification information is, for example, as shown in FIG.
As shown in (a), user identification information for identifying a user and audio mute information, video off information, and screen freeze information for specifying an initial operation state when answering an incoming call to the other party terminal are obtained. Become.

The terminal response identification information is used to specify an ISDN number and a subaddress for identifying a partner terminal and an initial operation state when receiving a response to the partner terminal, as shown in FIG. , Audio mute information, video off information, and screen freeze information. The terminal response identification information includes only the ISDN number, only the subaddress, or the ISDN number.
Some contain both numbers and subaddresses.

Here, the audio mute information is flag data for designating whether or not to set an audio mute mode in which audio information from the own terminal is not transmitted to the partner terminal. Flag data that specifies whether to set the video-off mode in which information is not sent to the partner terminal. The screen freeze information specifies whether to set the screen freeze mode in which the transmission screen is fixed to the first screen. This is the flag data to be executed.

The user response identification information and the terminal response identification information are formed in an appropriate number.
It is stored in the parameter memory 3. The user response identification information and the terminal response identification information are appropriately registered by the user.

FIGS. 15 to 18 show an example of processing at the time of detecting an incoming call of the remote conference communication system SAGC.

First, when an incoming call is detected, the contents of the call setup message SETUP received from the network at that time are analyzed (process 101), and it is checked whether or not a connection with the partner terminal is possible (decision 102). When the answer is NO, the incoming call is ignored (process 103), and this operation ends.

If the result of the judgment 102 is YES, it is checked whether or not any operation is being performed on the terminal at that time (decision 104). If the result of decision 104 is NO, it is checked whether the call setup message SETUP received at that time contains a "user / user" information element (decision 105).

If the result of determination 105 is YES, the user identification information is extracted from the "user / user" information element (step 106), and the content of the user identification information is changed to one of the user response identification information described above. It is checked whether or not it is registered in (step 107).
When the result of step (1) is YES, a response message CONN is sent out for the automatic incoming call operation (process 10).
8).

When the result of the determination 105 is NO, the contents of the "calling number" information element of the call setup message SETUP are extracted (step 109), and the value is set to one of the terminal response identification information described above. It is checked whether it is registered (judgment 110), and the result of judgment 110 is YES
If the answer is YES, the process proceeds to step 108, where a response message CONN is sent out for the automatic incoming call operation.

If the result of decision 110 is NO, it is checked whether the "calling subaddress" information element is included in the call setup message SETUP (decision 11).
1) If the result of the determination 111 is YES, the value of the “source subaddress” information element is extracted (processing 1).
12) It is checked whether or not the value is registered in any of the terminal response identification information described above (decision 113). If the result of decision 113 is YES, the process shifts to step 108 to execute the automatic incoming call operation. Response message CON for
Send N.

As described above, when the automatic call receiving operation is performed, after the response message CONN is transmitted, the response confirmation message CONN_ACK is received (step 114).
The first channel is established (step 115), frame synchronization is performed on the first channel (step 116), and the internal state of the system is set to a predetermined state (step 117).

Next, the user response identification information or the terminal response identification information used for the automatic incoming call operation at that time is read out (process 118), and it is checked whether or not the audio mute information is set to the ON state (decision 119). ), Judgment 1
When the result of step 19 is YES, the transmission sound from the own terminal is turned off (step 120), and the fact that the sound is muted is displayed on the own terminal (step 121). Here, the audio mute operation is, as in this case, in addition to turning off the transmission voice from the own terminal, setting the level of the transmission voice to the minimum value, or receiving the predetermined BAS command at the other terminal side. It can also be realized by instructing audio mute of audio. When the result of the determination 119 is NO,
Steps 120 and 121 are not executed.

Next, it is checked whether or not the video-off information is set to the on-state (decision 122). Decision 12
When the result of step 2 is YES, the video transmission from the own terminal is turned off (step 123), and the other terminal is notified of the video off by a predetermined BAS command (step 1).
24), the video-off state is displayed on the terminal itself (process 125).

When the result of the judgment 122 is NO, it is checked whether or not the screen freeze information is set to the ON state (decision 126). When the result of the determination 126 is YES, the video freeze information for one screen at that time is sampled (process 127), and the own terminal sets the screen freeze mode for transmitting only the sampled screen to sum (process 128). Then, the fact that the screen is frozen is displayed on the terminal itself (process 129). Here, the screen freeze operation can be realized not only by fixing the screen transmitted from the own terminal as in this case, but also by instructing the partner terminal to freeze the screen with a predetermined BAS command. On the other hand, when the result of the determination 126 is NO, the processes 127 to 129 are not executed.

In this way, when the state of the own terminal is set to the initial operation state set in advance for the other terminal, the additional call setting operation is executed by the operation of calling the additional call from the other terminal. (Process 130), the second channel is established (process 131), and frame synchronization of the second channel is established (process 132).

In this way, when two channels are established and the respective frame synchronizations are established, the synchronization between the channels is formed (process 133), and the state shifts to the data communication state by two channels.

In this state, the process waits until the remote conference communication session is started (NO loop of decision 134). The remote conference communication session is started, and if the result of decision 134 becomes YES, the audio mute state is set at that time. Is checked (step 135). If the result of the step 135 is YES, the voice transmission is turned on to release the voice mute state (process 136), and the voice mute state displayed on the terminal is displayed. End the display (Process 1
37).

Further, it is checked whether or not the video is in the off state (decision 138). If the result of the decision 138 is YES, the moving picture transmission is turned on (step 13).
9), the other terminal is notified of the video on by the BAS command (process 140), and the display of the video off state displayed on the own terminal is ended (process 141).

When the result of the judgment 138 is NO, it is checked whether or not the screen is frozen (judgement 142). When the result of the judgment 142 is YES, the normal moving picture transmission mode is set ( Process 143), the display of the screen freeze state displayed on the terminal itself is terminated (Process 144).

As described above, when the audio mute, video off, or screen freeze is set as the initial operation state, when the remote conference communication session is started, those states are released, and thereafter, , A normal remote conference communication process is executed.

Further, when the user determines that the user is operating the terminal,
When the result of step 4 is YES, the call setup message SET
The value of the user identification information of the “user / user” information element included in the UP is not a registered value, and the result of determination 107 is N
O, and the contents of the “calling number” information element and the “calling subaddress” information element included in the call setup message SETUP are not registered values,
When the result of the determination 113 is NO, and when the content of the “calling number” information element is not a registered value and the “calling subaddress” information element is not included, the determination 111
When the result of (1) is NO, a manual incoming call operation is executed.

That is, first, the call message ALER
T is transmitted to the network (process 145), and the operator calls the operator until the operator performs an incoming call answering operation or an incoming call ignoring operation (process 146, judgment 14).
7,148 NO loop). In this operator calling operation, the ISDN number, the subaddress (if any) of the partner terminal, and the terminal function (for example, the contents of the “transmission capability” information element and the “higher layer compatibility” information element) may be displayed and output.

Here, when the operator performs the incoming call ignoring operation and the result of determination 148 is YES, a predetermined call disconnection release procedure is executed (process 149), and the incoming call at that time is rejected.

If the operator performs an incoming call response operation and the result of determination 147 is YES, a response message CONN is sent out (process 150), and a response confirmation message CONN_ACK is received (process 151).
The first channel is established (process 152), and frame synchronization on the first channel is executed (process 153). At the time of the incoming call response operation, operation states such as audio mute, video off, and screen freeze may be set.

Next, an additional call setting operation is performed by an additional call originating operation from the partner terminal (process 154), and the second call setting operation is performed.
A channel is established (process 155), and frame synchronization of the second channel is established (process 156).

In this way, when the two channels are established and the frame synchronization is established, the synchronization between the channels is formed (process 157), and the state shifts to the data communication state by the two channels.

As described above, in the present embodiment, whether or not to automatically perform an incoming call operation on the partner terminal is set based on the information element included in the call setup message SETUP, and when the automatic incoming call operation is performed, the self Since the initial operation state of the terminal side can be set as appropriate, for example, it is possible to set so that neither voice nor video is output to the other terminal until the conference preparation is completed, and the operation of the remote conference communication session Can be performed appropriately.

By the way, in the above-described embodiment, the terminal to which the automatic incoming call operation is performed is restricted and the initial operation state of the own terminal at the time of the automatic incoming call can be set. By simply setting the initial operation state of the own terminal, the remote conference communication session can be smoothly operated.

In this case, for example, the same user response identification information as that shown in FIG. 14A is set, and the BAS capability value exchanged on the first channel is used to set the user identification information set for the own terminal user on the calling terminal side. May be notified to the receiving terminal, and the receiving terminal may set the initial operation state of the terminal itself in accordance with the user identification information set in the BAS capability value.

FIGS. 19 to 22 show examples of processing on the destination terminal side in this case.

First, when an incoming call is detected, the contents of the call setup message SETUP received from the network at that time are analyzed (process 201), and it is checked whether or not a connection with the partner terminal can be established (determination 202). If the answer is NO, the incoming call is ignored (process 203), and this operation ends.

When the result of determination 202 is YES, it is checked whether any operation is being performed on the terminal at that time (determination 204). When the result of the determination 104 is NO, in order to perform the automatic incoming call operation,
A response message CONN is transmitted (step 205), and a response confirmation message CONN_ACK is received (step 20).
6), the first channel is established (processing 207), frame synchronization on the first channel is performed (processing 208), and the internal state of the system is set to a predetermined state (processing 209).

Then, the contents of the BAS capability value received at that time are analyzed (process 210), and it is checked whether or not user identification information is included (determination 211). Judgment 21
When the result of 1 is YES, it is checked whether or not the value of the user identification information is registered in the user response identification information (decision 212).

When the result of the determination 212 is YES, the user response identification information at that time is read (Process 2).
13) It is checked whether or not the audio mute information is set to the ON state (determination 214). If the result of the determination 214 is YES, the transmission audio from the own terminal is turned off (processing 215), and in the audio mute state. The fact that there is is displayed on the terminal itself (process 216). Here, the audio mute operation is, as in this case, in addition to turning off the transmission voice from the own terminal, setting the level of the transmission voice to the minimum value, or receiving the predetermined BAS command at the other terminal side. It can also be realized by instructing audio mute of audio. Also,
When the result of the determination 214 is NO, the processes 215 and 216 are not executed.

Next, it is checked whether or not the video-off information is set to the on-state (decision 217). Judgment 21
When the result of step 7 is YES, the video transmission from the own terminal is turned off (step 218), and the other terminal is notified of the video off by a predetermined BAS command (step 2).
19), the fact that it is in the video off state is displayed on its own terminal (process 220).

If the result of the determination 217 is NO, it is checked whether or not the screen freeze information is set to the ON state (determination 221). If the result of the determination 221 is YES, the moving image information for one screen at that time is sampled (processing 222), and the own terminal sets the screen freeze mode for transmitting only the sampled screen to sum (processing 223). Then, the fact that the screen is frozen is displayed on the terminal itself (process 224). Here, the screen freeze operation can be realized not only by fixing the screen transmitted from the own terminal as in this case, but also by instructing the partner terminal to freeze the screen with a predetermined BAS command. When the result of the determination 221 is NO, the processing 222 to the processing 224 are not executed.

In this way, when the state of the own terminal is set to the initial operation state set in advance corresponding to the other terminal, the additional call setting operation is executed by the operation of making an additional call from the other terminal. (Process 225), the second channel is established (process 226), and frame synchronization of the second channel is established (process 227).

In this way, when the two channels are established and the frame synchronization is established, the synchronization between the channels is formed (process 228), and the state shifts to the data communication state by the two channels.

In this state, the process waits until the remote conference communication session starts (NO loop of decision 229). The remote conference communication session starts, and if the result of decision 229 becomes YES, the audio mute state is set at that time. Is checked (step 230). If the result of the step 230 is YES, the sound transmission is turned on to release the sound mute state (step 231), and the sound mute state displayed on the terminal is displayed. End the display (Process 2
32).

Further, it is checked whether or not the video is in the off state (decision 233). If the result of the decision 233 is YES, the moving picture transmission is turned on (step 23).
4), the other terminal is notified of the video on by the BAS command (process 235), and the display of the video off state displayed on the own terminal is ended (process 236).

When the result of the judgment 233 is NO, it is checked whether or not the screen is frozen (judgment 237). When the result of the judgment 237 is YES, the normal moving image transmission mode is set ( (Process 238) The display of the screen freeze state displayed on the terminal itself is terminated (Process 239).

As described above, when the audio mute, the video off, or the screen freeze is set as the initial operation state, when the remote conference communication session is started, those states are released, and thereafter, , A normal remote conference communication process is executed.

When the result of the determination 211 is NO when the BAS capability value does not include the user identification information, and when the result of the determination 222 is NO when the included user identification information is not the registered value. When the determination is NO, the process proceeds to step 225 to execute the subsequent operations. That is, in these cases, the initial operation state of the own terminal
Does not mute the audio, does not turn off the video, and does not freeze the screen.

Further, when the user judges that the user is operating the own terminal,
When the result of step 4 becomes YES, a manual incoming call operation is executed.

That is, first, the call message ALER
T is transmitted to the network (process 240), and the operator calls the operator until the operator performs an incoming call answering operation or an incoming call ignoring operation (process 241; decision 24).
2,243 NO loop). In this operator calling operation, it is preferable to display and output the ISDN number of the partner terminal, the subaddress (if any), and the terminal function (for example, the contents of the "transmission capability" information element and the "higher layer compatibility" information element).

Here, when the operator performs the incoming call ignoring operation and the result of determination 243 is YES, a predetermined call disconnection release procedure is executed (process 249), and the incoming call at that time is rejected.

When the operator performs an incoming call response operation and the result of determination 242 is YES, a response message CONN is sent out (process 245), and a response confirmation message CONN_ACK is received (process 246).
The first channel is established (step 247), and frame synchronization on the first channel is executed (step 248). At the time of the incoming call response operation, an operation of setting an initial operation state of the own terminal such as audio mute, video off, screen freeze, etc. may be performed.

Next, an additional call setting operation is executed by an additional call originating operation from the partner terminal (step 249), and the second
The channel is established (process 250), and frame synchronization of the second channel is established (process 251).

In this way, when the two channels are established and the respective frame synchronizations are established, the synchronization between the channels is formed (process 252), and the state shifts to the data communication state by the two channels.

In the above-described embodiment, when a call is made from a partner terminal registered in the response identification information,
Although the own terminal function is set in the initial operation state according to the registered contents, the initial operation state can be set as follows.

For example, when an automatic incoming call is received for all incoming calls and the partner terminal at that time is a registered terminal, audio mute, video off and screen freeze are not performed, and the partner terminal is not a registered terminal. To force audio mute, video off, and screen freeze. Alternatively, when a call is made from a partner terminal registered in the response identification information, audio mute, video off, and screen freeze are forcibly performed. Otherwise, audio mute, video off, and screen freeze are not performed. Also, as a mode to set this forcibly,
One type of state may be set in the system (for example, audio is muted, video is not turned off, and screen is not frozen).

Further, in the above-described embodiment, the case where the remote conference communication session is performed by the point-to-point connection has been described. However, for example, the remote conference communication is performed by the multipoint connection using the multipoint connection function (MCU). The present invention can be similarly applied to a case where a session is performed.

[0136]

As described above, according to the present invention,
Since the partner terminal that performs the automatic incoming call operation and the partner terminal that performs the manual incoming call operation can be appropriately set, the usability of the user is improved. In addition, since the initial state of the own terminal at the time of the incoming call operation can be set, for example, it is possible to appropriately set, for example, to mute the voice first, turn off the screen, or freeze the screen after the incoming call. This has the effect of improving the usability of the device.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a teleconference communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an example of a teleconference communication system device.

FIG. 3 is a block diagram illustrating an example of a communication control unit.

FIG. 4 is a schematic diagram illustrating an example of a protocol stack of the device of FIG. 2;

FIG. 5 is a schematic diagram showing another example of the teleconference communication system.

FIG. 6 is a time chart showing a basic example of a call control procedure between terminals using ISDN as a transmission path.

FIG. 7 is a schematic diagram showing an example of a format of a call setting signal.

FIG. 8 is a schematic diagram illustrating an example of a frame configuration of a multi-frame.

FIG. 9 is a schematic diagram showing an example of a signal configuration of one frame.

FIG. 10 is a schematic diagram showing an example of a frame adjustment signal.

FIG. 11 is a schematic diagram showing an example of a bit rate assignment signal.

FIG. 12 is a schematic diagram for explaining a signal transmission order.

FIG. 13: CCITT Recommendation H. 242 is a time chart showing a general procedure example of H.242.

FIG. 14 is a schematic diagram showing an example of response identification information.

FIG. 15 is a flowchart showing a part of an example of processing at the time of an incoming call;

FIG. 16 is a flowchart illustrating another part of an example of a process at the time of an incoming call;

FIG. 17 is a flowchart showing still another part of the example of the processing at the time of the incoming call;

FIG. 18 is a flowchart showing the remaining part of an example of a process at the time of an incoming call;

FIG. 19 is a flowchart showing a part of another example of a process at the time of an incoming call;

FIG. 20 is a flowchart showing another part of another example of the process at the time of an incoming call;

FIG. 21 is a flowchart showing still another part of another example of the process at the time of an incoming call;

FIG. 22 is a flowchart showing the remaining part of another example of the process at the time of an incoming call;

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-193756 (JP, A) JP-A-63-42566 (JP, A) JP-A-6-261132 (JP, A) JP-A 61-193132 152149 (JP, A) JP-A-4-207235 (JP, A) JP-A-63-187755 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04M 3/56 H04L 12 / 18 H04N 1/32 H04N 7/15

Claims (4)

(57) [Claims] 1. A method of controlling a teleconference communication terminal having at least a teleconference communication function, a facsimile communication function, and a document storage function and performing a teleconference communication session by referring to stored conference material document information, comprising: At least one response identification information including destination information of a responding terminal and initial state information for designating an initial operation mode of each communication element of the teleconference communication function when a call is made from the terminal is stored. When the content of the calling number information element included in the call setting message received at the time of detecting an incoming call matches the destination information of any of the response identification information registered in the storage means,
The operation mode of each communication element of the teleconference communication function is set to a state corresponding to the initial state information included in the response identification information while performing the incoming call operation, and the content of the calling number information element is stored in the storage unit. A teleconference communication terminal, wherein an operator calling operation is performed when the destination information does not match any destination information of the response identification information registered in the remote conference communication terminal. 2. A method of controlling a teleconference communication terminal having at least a teleconference communication function, a facsimile communication function, a document storage function, and a document record output, and performing a teleconference communication session with reference to the stored conference material document information. , The caller identification information including the destination information and the value of the calling subaddress of the partner terminal that automatically responds to the incoming call, and the initial operation mode of each communication element of the teleconference communication function when a call is made from the partner terminal. Storage means for storing at least one response identification information comprising initial state information for calling, a call setting message received upon detection of an incoming call, includes a calling subaddress information element, and a calling number included in the call setting message. The information element and the contents of the calling subaddress are included in any of the response identification information registered in the storage means. When the information matches the value of the destination information and the value of the calling sub-address, the terminal performs an incoming call operation and sets the operation mode of each communication element of the teleconference communication function to a state corresponding to the initial state information included in the response identification information. On the other hand, the call setting message received at the time of detecting the incoming call does not include the calling subaddress information element, or the calling number information element included in the call setting message or the content of the calling subaddress is registered in the storage means. A method of controlling a teleconference communication terminal, wherein an operator call operation is performed when the values of the destination information and the calling subaddress included in any response identification information do not match. 3. A method of controlling a teleconference communication terminal having at least a teleconference communication function, a facsimile communication function, and a document storage function, and performing a teleconference communication session by referring to stored conference material document information. Response identification consisting of identification information of a responding terminal and initial state information indicating an initial operation state for designating an initial operation mode of each communication element of the teleconference communication function when a call is made from the opposite terminal. A call setting message received when an incoming call is detected, wherein a user / user information element is included, and identification information included in the user / user information element is registered in the storage means; If the value matches the value included in any of the response identification information, While setting the operation mode of each communication element of the teleconference communication function to the state corresponding to the initial state information, the call setting message received at the time of detecting the incoming call does not include the user / user information element, or the call setting When the identification information included in the user / user information element included in the message does not match any of the values of the response identification information registered in the storage means, an operator calling operation is performed. Control method of conference communication terminal. 4. A control method of a teleconference communication terminal having at least a teleconference communication function, a facsimile communication function, and a document storage function, and performing a teleconference communication session with reference to the stored conference material document information. Storage means for storing one or more pieces of response identification information including initial identification information for designating an initial operation mode of each communication element of the teleconference communication function when a call is made from the partner terminal. The bit allocation signal notified on the first information channel after the incoming call response includes the identification information of the other terminal, and the value of the identification information is the value of one of the response identification information registered in the storage means. When the identification information matches, the operation mode of each communication element of the teleconference communication function is set to a state corresponding to the initial state information included in the response identification information. On the other hand, the bit allocation signal notified on the first information channel after the incoming call response does not include the identification information of the other terminal, or the value of the identification information included in the bit allocation signal is registered in the storage means. If it does not match the identification information of any of the response identification information, the incoming call is answered and the operation mode of each communication element of the teleconference communication function is set to an initial operation mode corresponding to a predetermined non-registered terminal. A method for controlling a teleconference communication terminal.