JP5009860B2 - Communication terminal, transmission method, transmission program, and recording medium recording the transmission program - Google Patents

Description

  The present invention relates to a transmission technique in a communication system, and more particularly to a transmission technique in which communication capability is specified.

In Patent Document 1, in ISDN (Integrated Services Digital Network), a call is made using an out-channel for line connection in order to reduce the time required for communication of user-specific information and reduce the burden on the user. A communication connection method for connecting the communication path of the receiving side and the called side is described.
JP-A-7-58874

  In the communication connection method of Patent Document 1, a calling terminal calls a receiving terminal using an out channel for line connection, and communication is established between the calling terminal and the receiving terminal after an out channel communication path is established. Confirm the function, determine the communication mode, and connect the in-channel that transmits the information signal.

  Now, with the development of information communication technology, various media are being communicated in addition to voice and video in recent years. As for communication terminals, there are telephone terminals that can perform only voice communication, videophone terminals that can communicate voice and video, and multifunction terminals that can communicate media other than voice and video. Even if communication terminals capable of communicating voice and video are used, if the voice coding method and the video coding method do not match between the calling communication terminal and the called communication terminal, communication is performed. I can't do it.

  In such a situation, after the communication terminal on the incoming side receives the call originated from the communication terminal on the outgoing side and the communication path is established, the communication terminal on the outgoing side and the communication terminal on the incoming side are Communication may not be possible due to different supported communication functions.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent the occurrence of a situation in which communication cannot be performed between the calling communication terminal and the receiving communication terminal after the transmission because the communication capabilities do not match. It is to prevent and make more efficient transmission.

The present invention is a communication terminal connected to a network, the storage means storing the communication capability of the own communication terminal, the WWW server is accessed via the network, and the telephone number and communication capability of the other communication terminal Acquisition means for acquiring a WWW page describing, a display means for displaying the acquired WWW page , a telephone number and communication capability of another communication terminal are acquired from the WWW page , communication capability of the other communication terminal, and storage means Comparing with the communication capability of the own communication terminal, the capability determining means for determining the communication capability to be used for communication with the other communication terminal, and specifying the determined communication capability and transmitting to the telephone number of the other communication terminal Transmitting means.

In addition, the present invention is a transmission method in which a communication terminal transmits to another communication terminal, the communication terminal having a storage unit in which the communication capability of the own communication terminal is stored, and connected to a WWW server via a network. access acquires an acquisition step of acquiring the WWW page with telephone numbers and communication capabilities of the other communication terminal, and a display step of displaying a WWW page obtained, a telephone number and the communication capability of the other communication terminals from the WWW pages , specify the communication capability of the other communication terminal is compared with the communication capability of the self communication terminal of the storage unit, the ability determining step of determining a communication capability are used to communicate with other communication terminals, the communication capability to the determined Then, a calling step for calling to the telephone number of the other communication terminal is performed.

In addition, the present invention is a transmission program that is executed by a communication terminal and that transmits to another communication terminal, and the communication terminal includes a storage unit in which communication capability of the communication terminal is stored, and the communication terminal includes An acquisition step of accessing the WWW server via the network and acquiring a WWW page describing the telephone number and communication capability of the other communication terminal ; a display step of displaying the acquired WWW page; and A capability determination step of acquiring a telephone number and a communication capability, comparing the communication capability of the other communication terminal with the communication capability of the storage unit's own communication terminal, and determining the communication capability used for communication with the other communication terminal; , Specifying the determined communication capability, and executing a calling step for calling to the telephone number of another communication terminal.

Further, the present invention is a recording medium recording a transmission program to be transmitted to another communication terminal executed by the communication terminal, the communication terminal having a storage unit in which the communication capability of the own communication terminal is stored, From the WWW page , an acquisition step for accessing the WWW server via the network to the communication terminal and acquiring a WWW page describing the telephone number and communication capability of the other communication terminal, and a display step for displaying the acquired WWW page Obtain the telephone number and communication capability of the other communication terminal, compare the communication capability of the other communication terminal with the communication capability of the own communication terminal of the storage unit, and determine the communication capability to be used for communication with the other communication terminal. A capability determining step and a calling step of specifying the determined communication capability and making a call to a telephone number of another communication terminal are executed.

  ADVANTAGE OF THE INVENTION According to this invention, generation | occurrence | production of the situation where it cannot communicate between the communication terminal of a transmission side and the communication terminal of a receiving side after communication and a communication capability does not match can be prevented, and more efficient transmission can be performed.

<First Embodiment>
Hereinafter, a first embodiment of the present invention will be described.

  FIG. 1 is a diagram showing a system according to a first embodiment of the present invention. The system shown in the figure includes a WWW (World Wide Web) server 1 and a plurality of communication terminals (communication devices) 2. The WWW server 1 and the communication terminal 2 are connected to an IP (Internet Protocol) network 9.

  The WWW server 1 stores a plurality of contents (WWW pages) including telephone number related information of at least one communication terminal 2 and stores them in the storage unit in response to a request from the communication terminal 2 And an information providing unit (not shown) for providing / transmitting the content to the communication terminal 2. As the WWW server 1, a general WWW server 1 used on the Internet or the like can be used.

  The telephone number related information is information that is necessary when the communication terminal 2 makes a call (makes a call) to another communication terminal 2, and includes the telephone number of the communication terminal 2 and the communication capability of the communication terminal 2. (Hereinafter referred to as “communication capability”).

  Specifically, the communication capability includes audio encoding methods (G.711, G.729, etc.), encoding parameters used in the audio encoding method, video encoding methods (MPEG-2, MPEG-4, etc.), To use the encoding parameters (image size: VGA, frame rate: 30fps, bit rate: 3Mbps, etc.), media other than audio and video (material sharing, file transfer, etc.) used in the video encoding system, Necessary parameters can be considered.

  The communication terminal 2 is a terminal capable of acquiring desired content from the WWW server 1 and transmitting to other communication terminals of the telephone number related information included in the content, and for transmission from other communication terminals. This is a telephone terminal that can receive incoming calls. For example, a personal computer may be used as the communication terminal 2.

  FIG. 2 is a block diagram of the communication terminal 2. The illustrated communication terminal 2 includes a user interface unit 21, a display unit 22, an acquisition unit 23, a capability determination unit 24, a telephone unit 25 (transmitting unit), and a storage unit 26. The acquisition unit 23 accesses the WWW server 1 and acquires content including the telephone number related information of the desired communication terminal 2. It is assumed that the content of the present embodiment is a WWW page described in HTML (HyperText Markup Language). The display unit 22 displays the content acquired from the WWW server 1 on a display (display device) included in the communication terminal 2. The user interface unit 21 receives a user operation instruction such as a user clicking (selecting) the telephone number related information in the content displayed on the display.

  The capability determination unit 24 analyzes the telephone number related information of the destination communication terminal selected by the user, and acquires the communication capability of the destination communication terminal. And the capability determination part 24 compares the communication capability of a transmission destination communication terminal with the communication capability of the own communication terminal 2 memorize | stored in the memory | storage part 26, and uses the communication capability used when transmitting to a transmission destination communication terminal. decide. The storage unit 26 stores communication capability of the own communication terminal 2.

  The telephone unit 25 designates the communication capability determined by the capability determination unit 24, calls the telephone number of the telephone number related information selected using a call connection protocol such as SIP (Session Initiation Protocol), and establishes the call To do. Further, the telephone unit 25 receives a call transmitted from another communication terminal. After the call is established, actual communication is performed according to the communication capability determined by the capability determining unit 24 between the communication terminal on the transmission side and the communication terminal on the reception side.

  Note that an incoming-only communication terminal that does not make a call may include only the telephone unit 25.

  As the WWW server 1 and the communication terminal 2 described above, for example, a general-purpose computer system including at least a CPU, a memory, and an external storage device such as an HDD can be used. In this computer system, each function of each device is realized by the CPU executing a predetermined program loaded on the memory. For example, each function of the WWW server 1 and the communication terminal 2 is executed by the CPU of the WWW server 1 in the case of a program for the WWW server 1, and the CPU 901 of the communication terminal 2 in the case of a program for the communication terminal 2, respectively. Is realized. The WWW server 1 and the communication terminal 2 may include an input device and an output device as necessary.

  Next, the operation of the system of this embodiment will be described.

  FIG. 3 is a diagram showing an outline of the operation of the system of the present embodiment. In FIG. 3, it is assumed that a communication terminal (transmission terminal) 2A on the transmission side transmits to a communication terminal (reception terminal) 2B on the reception side. Further, in the illustrated example, both the transmission terminal 2A and the reception terminal 2B are communication terminals having a videophone function (application) capable of voice and video communication, and the transmission terminal 2A and the reception terminal 2B simultaneously. It is assumed that a function (application) of document sharing that can refer to the same document is provided.

  The acquisition unit 23 of the transmission terminal 2A accesses the WWW server 1 specified by the user through the user interface unit 21, and acquires the content (WWW page) specified by the user (S1). Then, the display unit 22 of the transmission terminal 2A displays the acquired content on the display (S2). The content is described in HTML as shown below, for example, and the telephone number related information (telephone number, communication capability) of the receiving terminal 2B is described.

<html>
<body>
<A HREF=tel:03-8765-4321/G.711/MPEG-4(VGA/30fps/3Mbps)/doc> Telephone: 03-8765-4321 </A>
</ body>
</ html>
In the above phone number related information, “03-8765-4321” is used as the phone number, “G.711” is used as the audio encoding method, and “MPEG-4” is used as the video encoding method in the video encoding method. “Encoding size: VGA, frame rate: 30 fps, bit rate: 3 Mbps” is set as an encoding parameter to be performed, and “doc (material sharing)” is set as a medium other than audio and video.

  Note that a call control type such as SIP may be set in the communication capability.

  If the call control type (SIP) is set and only voice (G.711 or G.729) communication is performed, the description is as follows.

<A HREF=tel:03-8765-4321/SIP/G.711|G.729> Phone: 03-8765-4321 </A>
When the call control type (SIP) is set and voice (G.711) and video (MPEG-4) communication is performed, the following description is given.

<A HREF=tel:03-8765-4321/G.711/MPEG-4 (VGA/30fps/3Mbps)> Telephone: 03-8765-4321 </A>
In the example shown in FIG. 3, only the telephone number in the acquired content is displayed on the display of the transmission terminal 2 </ b> A so that the user can select it with a hyperlink, a button, or the like. Note that the communication capability may be displayed on the display together with the telephone number, or only the communication capability may be displayed on the display. In addition, the acquired content includes the telephone number related information of at least one communication terminal 2, and the telephone numbers of the plurality of communication terminals (or the communication capabilities of the plurality of communication terminals) may be displayed on the display.

  Then, the user interface unit 21 of the transmission terminal 2A accepts a user operation instruction such as clicking a telephone number displayed on the display (S3). As a result, the capability determination unit 24 includes the communication capability corresponding to the telephone number of the receiving terminal 2B described in the content and designated / selected by the user, and the transmission terminal 2A (own communication terminal) stored in the storage unit 26. The communication capability to be used for communication with the receiving terminal 2B is determined by comparing with the communication capability (S4).

  Specifically, the capability determination unit 24 extracts the communication capability included in both the communication capability of the transmitting terminal 2A and the communication capability of the receiving terminal 2B stored in the storage unit 26, and extracts the extracted communication capability. Is determined as the communication capability used for communication with the receiving terminal 2B.

  For example, as described above, the communication performance of the receiving terminal 2B is “G.711” as the audio encoding method, “MPEG-4” as the video encoding method, and the encoding parameters used in the video encoding method. “Image size: VGA, frame rate: 30 fps, bit rate: 3 Mbps” is set as “doc (document sharing)” as a medium other than audio and video, while the communication performance of the transmitting terminal 2A is audio code "G.711" as the encoding method, "MPEG-4 or MPEG-2" as the video encoding method, and "Image size: VGA, frame rate: 30 fps, bit rate as the encoding parameters used in the video encoding method : 3 Mbps ”is set as“ doc (document sharing) ”as media other than audio and video.

  In this case, the capability determination unit 24 uses “G.711” as the audio encoding method, “MPEG-4” as the video encoding method, and “image size: VGA, “Frame (30 fps, bit rate: 3 Mbps)” and “doc (document sharing)” are determined as media other than audio and video.

  Then, the telephone unit 25 of the calling terminal 2A makes a call to the receiving terminal 2B having the telephone number designated by the user by designating the communication capability determined by the capability determining unit 24 (S5). When the incoming terminal 2B responds to the outgoing call, the outgoing terminal 2A and the incoming terminal 2B communicate using the communication capability determined in S4.

  FIG. 4 is a sequence diagram showing the operation shown in FIG. 3 in more detail.

  The acquisition unit 23 of the transmission terminal 2A accesses the WWW server 1 specified by the user through the user interface unit 21, and acquires the content (WWW page) specified by the user (S11). The providing unit of the WWW server 1 transmits the content stored in the storage unit of the WWW server 1 to the transmitting terminal 2A (S12). As described above, the content includes the telephone number related information (telephone number, communication capability) of the receiving terminal 2B. The display unit 22 of the transmission terminal 2A displays a part (or all) of the acquired content on the display (S13).

  When the user interface 21 of the calling terminal 2A accepts a user operation instruction (for example, clicks on the telephone number of the displayed content) (S14), the capability determining unit 24 receives the incoming call instructed by the user described in the content. The communication capability corresponding to the telephone number of the terminal 2B is compared with the communication capability of the calling terminal 2A (own communication terminal) stored in the storage unit 26, and the communication capability used for communication with the receiving terminal 2B is determined. (S15).

  Then, the telephone unit 25 of the transmitting terminal 2A makes a call to the incoming terminal 2B of the telephone number designated by the user included in the content by designating the communication capability determined by the capability determining unit 24 (S16). . The telephone unit of the receiving terminal 2B responds (ie, receives an incoming call) to the outgoing call (S17), and communication using the communication capability determined by the capability determining unit 24 is performed between the transmitting terminal 2A and the receiving terminal 2B. (S18).

  When determining the communication capability in S15, the communication capability of the receiving terminal 2B described in the content is compared with the communication capability of the calling terminal 2A stored in the storage unit 26. When there is no ability to perform, the ability determination unit 24 outputs an error message indicating that the call cannot be made to the display unit 22, and the display unit 22 displays the error message on the display.

<Second Embodiment>
Hereinafter, a second embodiment of the present invention will be described.

  In the present embodiment, when determining the communication capability, when there are a plurality of combinations of communication capabilities that can be used between the transmitting terminal 2A and the receiving terminal 2B, the first function is to be presented to the user and selected. This is added to the embodiment. Note that the system configuration and the communication terminal 2 (transmitting terminal 2A, receiving terminal 2B) of this embodiment are the same as those in FIGS. 1 and 2 of the first embodiment, and thus description thereof is omitted here.

  FIG. 5 is a sequence diagram showing the operation of the present embodiment.

  The acquisition unit 23 of the transmission terminal 2A accesses the WWW server 1 specified by the user through the user interface unit 21, and acquires the content (WWW page) specified by the user (S21). The providing unit of the WWW server 1 transmits the content stored in the storage unit of the WWW server 1 to the transmitting terminal 2A (S22). As described above, the content includes the telephone number related information (telephone number, communication capability) of the receiving terminal 2B. The display unit 22 of the transmission terminal 2A displays a part (or all) of the acquired content on the display (S23).

  When the user interface 21 of the transmission terminal 2A accepts a user operation instruction (for example, clicks on the telephone number of the displayed content) (S24), the capability determination unit 24 receives the incoming call instructed by the user described in the content. The communication capability corresponding to the telephone number of the terminal 2B is compared with the communication capability included in the calling terminal 2A (own communication terminal) stored in the storage unit 26 (S25).

  Here, when there are a plurality of combinations of communication capabilities that can be used between the sending terminal 2A and the receiving terminal 2B, that is, they are included in both the communication capabilities of the sending terminal 2A and the receiving terminal 2B. When there are a plurality of patterns of communication capability that can be communicated, the capability determination unit 24 extracts the communication capability that overlaps both the transmitting terminal 2A and the receiving terminal 2B. And the capability determination part 24 produces | generates the capability selection screen for making a user select the extracted communication capability, and outputs it to the display part 22 (S25). The display unit 22 displays the ability selection screen on the display (S26). The user refers to the capability selection screen and instructs / selects a desired communication capability using the user interface unit 21 (S27).

  FIG. 6 shows an example of the ability selection screen. The capability selection screen shown in the figure indicates that the transmission terminal 2A and the reception terminal 2B can use audio, video, and document sharing as media. Further, it is shown that both “G.711” and “G.729” can be used as the speech encoding method. Also, not using voice communication is displayed as an option. In the illustrated example, it is indicated that the user has selected “G.711” by clicking.

  As the video encoding method, “MPEG-4” is shown to be usable, and not using video communication is also displayed as an option. As the encoding parameters used in the video encoding method, a plurality of image sizes and frame rates can be used, and the user can select desired parameters by a drop-down menu or the like. In the illustrated example, it is indicated that the user has selected “VGA” as the image size of “MPEG-4” and “30 fps” as the frame rate. Further, in the illustrated example, the user uses “material sharing”.

  The capability determination unit 24 receives a user's selection instruction, and determines the selected communication capability as a communication capability to be used between the transmission terminal 2A and the reception terminal 2B. Then, the telephone unit 25 of the transmission terminal 2A makes a call to the incoming terminal 2B having the telephone number designated by the user by designating the communication capability determined by the capability determination unit 24 (S28). The telephone unit of the receiving terminal 2B responds (ie, receives an incoming call) to the outgoing call (S29), and communication using the communication capability determined by the capability determining unit 24 is performed between the transmitting terminal 2A and the receiving terminal 2B. (S30).

  In the first and second embodiments described above, the caller communication terminal acquires the communication capability of the desired callee communication terminal from the WWW server 1 before placing the call, and the callee communication terminal. The communication capability designated at the time of outgoing call is determined in consideration of the communication capability included in the communication terminal and the communication capability included in the own communication terminal. As a result, in the first and second embodiments, it is possible to prevent the occurrence of a situation where communication cannot be performed between the calling communication terminal and the receiving communication terminal because the communication capabilities do not match after calling, and more efficient. Can make outgoing calls. Therefore, it is not necessary for the communication terminal on the transmission side to inquire about the communication capability of the communication terminal with respect to the communication terminal on the reception side after the transmission.

  Further, in the second embodiment, when there are a plurality of usable communication capability candidates by comparing the communication capability of the receiving communication terminal with the communication capability of the calling communication terminal, the plurality of candidates Is displayed to the user, and the user's selection instruction is accepted. Thereby, in 2nd Embodiment, it can communicate with the communication terminal of the incoming side using the communication capability which a user desires.

  In addition, this invention is not limited to the said embodiment, Many deformation | transformation are possible within the range of the summary. For example, in the above embodiment, an IP network is used as the network, but the present invention may be applied to networks such as a public telephone network, an IP telephone network, and a mobile phone network.

1 is an overall configuration diagram of a system according to an embodiment of the present invention. It is a functional block diagram of a communication system. It is a figure which shows typically the outline of operation | movement of 1st Embodiment. It is a sequence diagram which shows operation | movement of 1st Embodiment. It is a sequence diagram which shows operation | movement of 2nd Embodiment. It is a figure which shows an example of a capability selection screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 WWW server 2 Communication terminal 2A Originating terminal 2B Incoming terminal 21 User interface part 22 Display part 23 Acquisition part 24 Capability determination part 25 Telephone part 26 Storage part

Claims (6)

A communication terminal connected to a network,
Storage means for storing the communication capability of the communication terminal;
Obtaining means for accessing a WWW server via the network and obtaining a WWW page describing a telephone number and communication capability of another communication terminal;
Display means for displaying the acquired WWW page ;
Communication capability used for communication with another communication terminal by acquiring the telephone number and communication capability of the other communication terminal from the WWW page , comparing the communication capability of the other communication terminal with the communication capability of the own communication terminal of the storage means Ability determination means to determine
Calling means, which designates the determined communication capability and makes a call to a telephone number of another communication terminal. The communication terminal according to claim 1 ,
The capability determining means determines the communication capability included in both the communication capability of the other communication terminal and the communication capability of the own communication terminal of the storage means as the communication capability used for communication with the other communication terminal. A characteristic communication terminal. The communication terminal according to claim 1 or 2 , wherein
The capability determination unit compares the communication capability of the other communication terminal with the communication capability of the own communication terminal of the storage unit, and when there are a plurality of communication capability candidates that can be used for communication with the other communication terminal, A communication terminal characterized by presenting a plurality of candidates. A communication method in which a communication terminal transmits to another communication terminal,
The communication terminal has a storage unit that stores communication capability of the communication terminal,
An acquisition step of accessing a WWW server via a network and acquiring a WWW page describing a telephone number and communication capability of another communication terminal;
A display step for displaying the acquired WWW page ;
Communication capability used for communication with another communication terminal by acquiring the telephone number and communication capability of the other communication terminal from the WWW page , comparing the communication capability of the other communication terminal with the communication capability of the own communication terminal of the storage unit Ability determination step to determine,
A calling step of performing a calling step of calling the telephone number of another communication terminal by designating the determined communication capability. A transmission program executed by a communication terminal and transmitted to another communication terminal,
The communication terminal has a storage unit that stores communication capability of the communication terminal,
In the communication terminal,
An acquisition step of accessing a WWW server via a network and acquiring a WWW page describing a telephone number and communication capability of another communication terminal;
A display step for displaying the acquired WWW page ;
Communication capability used for communication with another communication terminal by acquiring the telephone number and communication capability of the other communication terminal from the WWW page , comparing the communication capability of the other communication terminal with the communication capability of the own communication terminal of the storage unit Ability determination step to determine,
A calling program that specifies the determined communication capability and sends a call to a telephone number of another communication terminal. A recording medium recording a transmission program to be transmitted to another communication terminal executed by the communication terminal,
The communication terminal has a storage unit that stores communication capability of the communication terminal,
In the communication terminal,
An acquisition step of accessing a WWW server via a network and acquiring a WWW page describing a telephone number and communication capability of another communication terminal;
A display step for displaying the acquired WWW page ;
Communication capability used for communication with another communication terminal by acquiring the telephone number and communication capability of the other communication terminal from the WWW page , comparing the communication capability of the other communication terminal with the communication capability of the own communication terminal of the storage unit Ability determination step to determine,
A calling step for calling the telephone number of another communication terminal by designating the determined communication capability;
A recording medium on which a transmission program for executing is recorded.

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