JP4664160B2 - PTT communication system, message processing server, and message processing method - Google Patents

Description

  The present invention provides a PTT communication using Push-to-Talk over Cellular (PoC) that transmits message data obtained by converting the content of the conversation based on a predetermined wireless communication system by performing a predetermined operation during a conversation. The present invention relates to a system, a PTT communication terminal, a message processing server, and a message processing method.

  In recent years, in mobile communication systems using mobile phone terminals, personal digital assistants (PDAs) equipped with wireless communication functions, etc., communication services that realize 1-to-N (many) calls using half-duplex communication such as transceivers So-called Push-to-Talk over Cellular (hereinafter abbreviated as “PoC” as appropriate) is provided.

  The PoC has a push-to-talk (PTT) function for transmitting message data, in which the content of the conversation is converted according to a predetermined communication method, by operating a specific button or the like during the conversation. A mobile phone terminal (PTT communication terminal) to be used, and a message processing server having a function of relaying message data transmitted by the mobile phone terminal to a mobile phone terminal of a call destination or storing the message data Are used (for example, Patent Document 1).

PoC makes it easy to make 1-to-N calls, and is therefore used for conference calls and the like.
Japanese translation of PCT publication No. 2002-536928 (pages 13-15, FIG. 3)

  However, the above-described conventional PoC has the following problems. For example, when a member who has not been able to participate in a conference call using PoC listens to the content (message data) of the conference call stored in the message processing server later, the member only specifies the desired part. Specifically, there is a problem that it is not possible to easily select and listen only to a portion that meets a predetermined condition.

  Therefore, the present invention has been made in view of such a situation, and in the case of using Push-to-Talk over Cellular (PoC), message data that matches a predetermined condition from the accumulated message data. It is an object of the present invention to provide a PTT communication system, a PTT communication terminal, a message processing server, and a message processing method that can easily select and listen to only a message.

In order to solve the problems described above, the present invention has the following features. First, the first feature of the present invention is that when a conversation is performed, a predetermined operation (for example, pressing an operation button) is performed so that the content of the conversation is transferred to a predetermined wireless communication system (third generation mobile communication system). A PTT communication terminal (for example, PTT communication terminal 20A) that transmits message data (message data M13) converted based thereon, and a message processing server (PTT server 100) that relays and stores the message data transmitted by the PTT communication terminal , A message storage server 200 and a message providing server 300), wherein the PTT communication terminal adds an attribute information indicating a predetermined attribute of the message data to the message data. Attribute information adding unit 27) and the message to which the attribute information is added. A message data transmission unit with attribute information (communication unit 21 and message processing unit 23) for transmitting message data with attribute information (message data M with attribute information), which is data, to the message processing server, A message receiving unit (communication unit 101 and message processing unit 103) that receives the message data with attribute information, and generates metadata of the message data based on the message data with attribute information received by the message receiving unit A metadata generation unit (metadata processing unit 205) for generating message data information (Web screen information) indicating the content of the message data based on the metadata, and transmitting the generated message data information to a communication terminal Metadata transmission unit (communication 301 and a message processing unit 303) and a message data transmission unit (communication unit 301 and the communication unit 301 and the message processing unit 303) that transmits the message data associated with the message data information to the communication terminal in response to an acquisition request received from the communication terminal. A message processing unit 303).

  According to such a PTT communication system, metadata of message data is generated based on message data with attribute information to which attribute information indicating a predetermined attribute of message data is added.

  That is, since message data information indicating the content of message data can be easily provided based on the metadata, a user who wants to listen to the message data stored in the message processing server can Only messages that meet a predetermined condition can be easily selected and listened to.

  A second feature of the present invention is a PTT communication terminal for transmitting message data obtained by converting the content of the conversation based on a predetermined wireless communication system by performing a predetermined operation during a conversation to a message processing server. An attribute information adding unit for adding attribute information indicating a predetermined attribute of the message data to the message data, and transmitting message data with attribute information which is the message data to which the attribute information is added to the message processing server. The gist is to include a message data transmission unit with attribute information.

  A third feature of the present invention relates to the second feature of the present invention, wherein the attribute information adding unit adds the importance of the message data (message importance M11) as the attribute information to the message data. Is the gist.

  A fourth feature of the present invention relates to the third feature of the present invention, further comprising an operation button unit (operation button unit 29), wherein the importance is associated with a predetermined operation on the operation button unit. The attribute information adding unit adds the importance as the attribute information to the message data by executing the predetermined operation.

  A fifth feature of the present invention relates to the second feature of the present invention, wherein the attribute information adding unit uses a conversation content type (conversation content type M11A) included in the message data as the attribute information. The gist is to add to the message data.

  A sixth feature of the present invention relates to the fifth feature of the present invention, further comprising an operation button part (operation button part 29), wherein the type is associated with a predetermined operation on the operation button part. The attribute information adding unit adds the type as the attribute information to the message data by executing the predetermined operation.

  According to a seventh aspect of the present invention, the message transmitted by the PTT communication terminal that transmits message data obtained by converting the content of the conversation based on a predetermined wireless communication system by performing a predetermined operation during the conversation. A message processing server for relaying and storing data, wherein the message receiving unit receives message data with attribute information that is the message data to which attribute information indicating a predetermined attribute of the message data is added; and the message receiving unit Generates the metadata of the message data based on the message data with the attribute information received, and generates message data information indicating the content of the message data based on the metadata. Metadata for transmitting the message data information to the communication terminal A transmission unit, in response to the acquisition request received from the communication terminal, and summarized in that and a message data transmitting unit that transmits the message data associated with the message data information to the communication terminal.

  An eighth feature of the present invention relates to the seventh feature of the present invention, wherein the importance level of the message data is added to the message data as the attribute information, and the metadata generation unit The gist is to generate metadata including.

  A ninth feature of the present invention relates to the seventh feature of the present invention, wherein a type of conversation content included in the message data is added to the message data as the attribute information, and the metadata The gist of the generation unit is to generate metadata including the type.

  According to a tenth aspect of the present invention, the message transmitted by the PTT communication terminal that transmits message data obtained by converting the content of the conversation based on a predetermined wireless communication system by performing a predetermined operation during the conversation. A message processing method for processing data, wherein the PTT communication terminal adds attribute information indicating a predetermined attribute of the message data to the message data, and includes the attribute information transmitted by the PTT communication terminal Generating message data metadata based on message data; generating message data information indicating the content of the message data based on the metadata; and transmitting the generated message data information to a communication terminal. And responding to the acquisition request received from the communication terminal. Te, and summarized in that comprises a step of transmitting the message data associated with the message data information to the communication terminal.

  According to the feature of the present invention, when using Push-to-Talk over Cellular (PoC), it is possible to easily select and listen only to message data that meets a predetermined condition from stored message data. A PTT communication system, a PTT communication terminal, a message processing server, and a message processing method can be provided.

  Next, an embodiment of the present invention will be described. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones.

  Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

(Overall schematic configuration of PTT communication system)
FIG. 1 is an overall schematic configuration diagram of a PTT communication system according to the present embodiment. The PTT communication system according to the present embodiment includes PTT communication terminals 20A and 20B. Further, the PTT communication system includes a PTT server 100, a message storage server 200, and a message providing server 300.

  In the present embodiment, the PTT communication terminals 20A and 20B are mobile phone terminals compatible with a so-called third generation mobile communication system.

  In particular, the PTT communication terminals 20A and 20B operate a predetermined operation at the time of conversation, specifically, by operating a specific button of the operation button unit 29, thereby changing the content of the conversation to a predetermined wireless communication system, this embodiment. Is provided with a push-to-talk (PTT) function for transmitting message data M with attribute information converted based on a voice coding rule and modulation method used in the third generation mobile communication system. To-Talk over Cellular (PoC) can be used.

  Although not shown in FIG. 1, the PTT communication system according to the present embodiment includes a large number of PTT communication terminals having the same functions as the PTT communication terminals 20A and 20B. In the present embodiment, a description will be given below assuming that a conference call using PoC is performed between the PTT communication terminals.

  The communication terminal 30 is a communication terminal that can access the communication network 10 via the radio base stations 11A and 11B. The communication terminal 30 is a general wireless communication terminal that does not have a PTT function like the PTT communication terminals 20A and 20B. As the communication terminal 30, a mobile phone terminal or a personal digital assistant (PDA) having a wireless communication function is used.

  The communication network 10 relays the message data M with attribute information transmitted by the PTT communication terminals 20A and 20B. The communication network 10 includes radio base stations 11A and 11B that perform radio communication with the PTT communication terminals 20A and 20B and the communication terminal 30.

  In addition, a PTT server 100, a message storage server 200, and a message providing server 300 are connected to the communication network 10.

  The PTT server 100 relays the message data M with attribute information transmitted by the PTT communication terminals 20A and 20B to the communication terminal 30 and the message storage server 200.

  The message storage server 200 stores the message data M13 included in the message data M with attribute information relayed by the PTT server 100.

  In addition, the message storage server 200 generates metadata D (see FIG. 10) of the message data M13 and stores the generated metadata D.

  The message providing server 300 executes communication with the communication terminal 30 and stores Web screen information (see FIGS. 11B, 11C, and 11C) generated based on the metadata D and message data M13. It transmits to the communication terminal 30.

  In this embodiment, the PTT server 100, the message storage server 200, and the message providing server 300 constitute a “message processing server” that relays and stores the message data M with attribute information transmitted by the PTT communication terminals 20A and 20B. .

  In the present embodiment, the message processing server is configured using three servers, that is, the PTT server 100, the message storage server 200, and the message providing server 300. However, the message processing server is configured using one server. May be configured.

(Logical block configuration)
Next, logical block configurations of the above-described PTT communication terminal 20A, communication terminal 30, PTT server 100, message storage server 200, and message providing server 300 will be described.

(1) PTT Communication Terminal FIG. 2 is a logical block configuration diagram of the PTT communication terminal 20A. Note that the PTT communication terminal 20B also has the same logical block configuration as the PTT communication terminal 20A. Hereinafter, portions related to the present invention will be mainly described. Accordingly, it should be noted that the PTT communication terminal 20A may include a logic block (power supply unit or the like) that is not illustrated or omitted in description, which is essential for realizing the functions of the PTT communication terminal 20A (communication described later). The same applies to the terminal 30, the PTT server 100, the message storage server 200, and the message providing server 300).

  As shown in FIG. 2, the PTT communication terminal 20A includes a communication unit 21, a message processing unit 23, a presence processing unit 25, an attribute information adding unit 27, and an operation button unit 29.

  The communication unit 21 provides functions (such as transmission / reception of radio signals and modulation / demodulation) for performing radio communication with the radio base stations 11A and 11B.

  The message processing unit 23 processes the content (message) of the conversation. Specifically, the message processing unit 23 converts the content of the conversation made by the user of the PTT communication terminal 20A, that is, the voice band signal based on a predetermined voice coding rule (for example, AMR) to the message data M13 ( 9).

  Further, the message processing unit 23 transmits message data with attribute information M, which is message data to which attribute information indicating a predetermined attribute of the message data M13 is added, to the PTT server 100. In the present embodiment, the communication unit 21 and the message processing unit 23 constitute a message data transmission unit with attribute information.

  Specifically, when a specific button of the operation button unit 29 associated with the PTT function is operated, the message processing unit 23 transmits the generated message data with attribute information M to the PTT server 100.

  Here, the structure of the message data M with attribute information will be described with reference to FIG. As shown in FIG. 9, the message data M with attribute information includes a message importance level M11, a theme switching flag M12, and message data M13.

  The message importance M11 indicates the importance of the message data M13. For the bits assigned to the message importance M11, an appropriate number is assigned according to the number of levels of importance.

  The theme switching flag M12 indicates that the theme (agenda) discussed in the telephone conference has changed when a telephone conference is performed between a plurality of PTT communication terminals using PoC. Specifically, the theme switching flag M12 is set to a predetermined state (for example, “1”) in the message data M13 transmitted immediately after the theme is transferred.

  As shown in FIG. 2, the presence processing unit 25 generates presence information indicating the presence of the user according to the state of the user of the PTT communication terminal 20A, and notifies the generated presence information to the PTT server 100. .

  Specifically, the presence processing unit 25 indicates the status of the user of the PTT communication terminal 20A, for example, “Currently not temporarily participating in the conference call”, “I will soon leave the conference call”, “ Presence information indicating the contents is generated in accordance with the state such as “is” or “meal”. The contents of the presence information can be arbitrarily set by the user of the PTT communication terminal 20A.

  The presence processing unit 25 notifies the PTT server 100 of new presence information every time the presence information is changed according to a change in the state of the user of the PTT communication terminal 20A.

  The attribute information adding unit 27 adds attribute information indicating a predetermined attribute of the message data M13, in the present embodiment, the above-described message importance M11 (see FIG. 9) to the message data M13.

  In the present embodiment, the message importance level M11 is associated with a predetermined operation on the operation button unit 29, and the attribute information adding unit 27 executes the predetermined operation, thereby the message importance level M11. Is added to the message data M13.

  For example, when the importance of the message data M13 expressed by the message importance M11 is expressed by nine levels 1 to 9 (1: high importance, 9: low importance), the importance is indicated by the operation button unit 29. Can be associated with buttons “1” to “9”. That is, to set the highest importance level of the message data M13, the button “1” is pressed.

  The operation button unit 29 includes a plurality of operation buttons associated with numbers, alphabets, hiragana, and the like. As described above, the operation button unit 29 is used when transmitting using the PTT function for transmitting the contents of conversation, when specifying the importance of the message data M13, and for inputting a telephone number or an address. Is also used.

(2) Communication Terminal FIG. 3 is a logical block configuration diagram of the communication terminal 30. As illustrated in FIG. 3, the communication terminal 30 includes a communication unit 31, a message processing unit 33, and an output unit 35.

  The communication unit 31 provides a function (radio signal transmission / reception, modulation / demodulation, etc.) for executing radio communication with the radio base stations 11A and 11B.

  The message processing unit 33 executes processing related to the electronic mail (including a message by SMS), Web screen information (see FIG. 11), and message data M13 transmitted by the message providing server 300.

  The output unit 35 displays the contents of the email processed by the message processing unit 33 and Web screen information, and outputs a voice band signal based on the message data M13. The output unit 35 includes a small liquid crystal display, a speaker, and the like.

(3) Message Processing Server In the present embodiment, as described above, the PTT server 100, the message storage server 200, and the message providing server 300 constitute a message processing server. Hereinafter, logical block configurations of the PTT server 100, the message storage server 200, and the message providing server 300 will be described.

(3.1) PTT Server FIG. 4 is a logical block configuration diagram of the PTT server 100. As shown in FIG. 4, the PTT server 100 includes a communication unit 101, a message processing unit 103, a member management unit 105, a presence management unit 107, and a storage unit 109.

  The communication unit 101 provides a communication interface for connecting to the communication network 10. In particular, in the present embodiment, the communication unit 101 relays the message data M with attribute information and presence information transmitted by the PTT communication terminal 20A (20B).

  The message processing unit 103 executes processing of the message data M with attribute information transmitted by the PTT communication terminal 20A (20B).

  Specifically, the message processing unit 103 refers to the list stored in the storage unit 109 and participates in the telephone conference with the message data M with attribute information transmitted by the PTT communication terminal 20A (20B). Relay to another PTT communication terminal.

  In addition, the message processing unit 103 relays the message data M with attribute information transmitted by the PTT communication terminal 20A (20B) to the message storage server 200. In the present embodiment, the communication unit 101 and the message processing unit 103 constitute a message receiving unit.

  The member management unit 105 manages members participating in a conference call using PoC, that is, PTT communication terminals. Specifically, the member management unit 105 generates a list of PTT communication terminals that participate in the conference call using PoC, and stores the generated list in the storage unit 109.

  In addition, the member management unit 105 refers to the database stored in the storage unit 109 in response to the user name conversion request transmitted by the message storage server 200, and is associated with the telephone number of the PTT communication terminal. The message storage server 200 is notified of the user name and the mail address of the user.

  The presence management unit 107 manages presence information transmitted by the PTT communication terminal 20A (20B).

  Specifically, when receiving presence information from the PTT communication terminal 20A (20B), the presence management unit 107 uses the PTT communication terminal 20A (20B) stored in the storage unit 109 based on the presence information. Update the status of a person. The presence management unit 107 may acquire the position information of the PTT communication terminal 20A (20B) from the outside, and update the state of the user of the PTT communication terminal 20A (20B) based on the position information.

  Further, based on the presence information, the presence management unit 107 notifies the other PTT communication terminals participating in the conference call that the state of the user of the PTT communication terminal 20A (20B) has changed. .

  Further, the presence management unit 107 notifies the message storage server 200 of the state of the user stored in the storage unit 109 in response to the presence notification request transmitted by the message storage server 200.

  The storage unit 109 stores a database such as a list of PTT communication terminals participating in a conference call using PoC, a presence indicating a state of a user of a PTT communication terminal participating in the conference call, and the like.

(3.2) Message Storage Server FIG. 5 is a logical block configuration diagram of the message storage server 200. As illustrated in FIG. 5, the message storage server 200 includes a communication unit 201, a message processing unit 203, a metadata processing unit 205, and a storage unit 207.

  The communication unit 201 provides a communication interface for connecting to the communication network 10. In particular, in the present embodiment, the communication unit 201 relays the message data with attribute information M transmitted by the PTT server 100, the metadata D (see FIG. 10) generated by the metadata processing unit 205, and the like.

  The message processing unit 203 executes processing of the message data M with attribute information transmitted by the PTT server 100.

  Specifically, the message processing unit 203 acquires the message data M with attribute information transmitted by the PTT server 100. The message processing unit 203 notifies the metadata processing unit 205 of the contents of the message importance level M11 and the theme switching flag M12 included in the message data M with attribute information.

  The metadata processing unit 205 generates metadata D of the message data M13 based on the message data M with attribute information transmitted by the PTT server 100. In the present embodiment, the metadata processing unit 205 constitutes a metadata generation unit.

  Specifically, the metadata processing unit 205 determines the message importance level M11, the theme switching flag M12, and the time when the message data M13 is generated (transmitted) included in the message data M with attribute information, or by the PTT server 100. Metadata D is generated based on the notified state (presence) of the user of the PTT communication terminal 20A (20B).

  In the present embodiment, the metadata processing unit 205 generates metadata D based on a format defined in MPEG-7.

  FIG. 10 shows an example of the metadata D. As shown in FIG. 10, the metadata D is described according to a format defined in MPEG-7, that is, XML.

  The metadata D includes a message number (message_no), a time and length (time, message_length) when the message data M13 is generated, a speaker, and an importance level. That is, in the present embodiment, the metadata processing unit 205 generates metadata D including the importance of the message data M13 based on the message importance M11.

  Further, the metadata processing unit 205 determines the user, that is, the remark based on the information (for example, telephone number, mail address, and presence) related to the user of the PTT communication terminal 20A (20B) notified by the PTT server 100. Metadata including information about the person can also be generated.

  The storage unit 207 stores message data M with attribute information relayed by the PTT server 100, metadata D generated by the metadata processing unit 205, and the like.

(3.3) Message Providing Server FIG. 6 is a logical block diagram of the message providing server 300. As shown in FIG. 6, the message providing server 300 includes a communication unit 301, a message processing unit 303, and a storage unit 305.

  The communication unit 301 provides a communication interface for connecting to the communication network 10. In particular, in this embodiment, the communication unit 301 relays a message acquisition request transmitted by the PTT communication terminal 20A (20B), message data M13 transmitted by the message processing unit 303, and the like.

  In response to a message acquisition request from the communication terminal 30, the message processing unit 303 executes processing related to the message data M <b> 13 transmitted to the communication terminal 30.

  Specifically, the message processing unit 303 confirms that the message data M13 related to the conference call in which the user could not participate is stored based on the mail address (or telephone number) notified from the message storage server 200. An e-mail to be notified (including a message by SMS) is transmitted to the e-mail address (phone number).

  Further, in response to the acquisition request received from the communication terminal 30, the message processing unit 303 adds Web screen information (message data information) indicating the content of the message data M13 to the metadata D associated with the message data M13. Generate based on.

  Further, the message processing unit 303 transmits the generated Web screen information (see FIGS. 11B, 11C, and 11C) to the communication terminal 30. In the present embodiment, the communication unit 301 and the message processing unit 303 constitute a message data information transmission unit.

  Further, the message processing unit 303 transmits message data M13 associated with the Web screen information (message data information) to the communication terminal 30 in response to an acquisition request for the message data M13 received from the communication terminal 30. In the present embodiment, the communication unit 301 and the message processing unit 303 constitute a message data transmission unit.

  The storage unit 305 stores electronic mail generated by the message processing unit 303, Web screen information, and the like.

(Operation of PTT communication system)
Next, the operation of the above-described PTT communication system will be described. Specifically, the operation associated with the transmission of the message data M with attribute information by the PTT communication terminal 20A and the operation associated with the acquisition of the message data M13 by the communication terminal 30 will be described.

  In the present embodiment, the PTT communication terminal 20A and the PTT communication terminal 20B conduct a conference call using Push-to-Talk over Cellular (PoC), and a user who has not been able to participate in the conference call can communicate with the communication terminal 30. The case where the message data M13 which is the content of the said telephone conference accumulate | stored in the message storage server 200 is acquired using is demonstrated.

(1) Operation Accompanied with Transmission of Message Data with Attribute Information As shown in FIG. 7, in step S10, the PTT communication terminal 20A operates a predetermined button of the operation button unit 29, whereby the message importance level M11, The message data M with attribute information (see FIG. 9) including the theme switching flag M12 and the message data M13 is transmitted to the PTT server 100.

  In step S20a, the PTT server 100 relays the message data M13 included in the message data M with attribute information received from the PTT communication terminal 20A to the PTT communication terminal 20B.

  In step S20b, the PTT server 100 relays the message data M with attribute information received from the PTT communication terminal 20A to the message storage server 200. In addition, the process of step S20a and the process of step S20b are performed in parallel.

  In this embodiment, since PoC is used, communication between PTT communication terminals is half duplex. For this reason, the message data M13 and the sender of the message data M13, that is, the PTT communication terminal are always associated one-to-one.

  Further, since the PTT server 100 knows the members participating in the conference using PoC, that is, the PTT communication terminal, the message data with attribute information M does not have to include the sender information.

  Furthermore, since the PTT server 100 relays the message data M13 included in the message data M with attribute information transmitted by the PTT communication terminal, the message data M with attribute information does not have to include information about time. Good.

  In step S30, the PTT communication terminal 20B converts the message data M13 received from the PTT server 100, and outputs a voice band signal (conversation content).

  In step S40, the message storage server 200 generates the metadata D of the message data M13 included in the message data M with attribute information based on the message data M with attribute information relayed by the PTT server 100.

  Specifically, the message storage server 200 determines the message importance level M11, the theme switching flag M12, the time when the message data M13 included in the message data M with attribute information is generated, or the PTT notified by the PTT server 100. Metadata D is generated based on information about the user of the communication terminal 20A (for example, telephone number, mail address, and presence).

  Since the PTT server 100 knows the state (presence) of the user of the PTT communication terminal and the position information of the PTT communication terminal, the message storage server 200 generates the metadata D based on the situation. You can also. For example, the message storage server 200 can generate metadata D including “message data that Mr. Bill has not listened to” based on Mr. Bill's presence.

  In step S50, the message storage server 200 stores the generated metadata D. Specifically, the message storage server 200 stores the generated metadata D in the storage unit 207 (see FIG. 5).

(2) Operation Associated with Acquisition of Message Data by Communication Terminal As shown in FIG. 8, in step S <b> 110, the message providing server 300 transmits a message (SMS message) by SMS to the communication terminal 30. Specifically, based on the telephone number notified from message storage server 200, message providing server 300 notifies that message data M13 related to the telephone conference in which the user of communication terminal 30 could not participate is stored. To send the SMS message to the telephone number.

  Here, FIG. 11A shows an example of the SMS message transmitted by the message providing server 300. Since the SMS message as shown in FIG. 11A is displayed on the communication terminal 30, the user of the communication terminal 30 recognizes that the message data M13 related to the conference call that could not be participated is accumulated.

  In step S120, the communication terminal 30 transmits an acquisition request for the message data M13 to the message providing server 300 based on a predetermined operation by the user. Specifically, the communication terminal 30 accesses the message providing server 300 associated with the URL included in the SMS message received in step S110.

  In step S <b> 130, the message providing server 300 transmits Web screen information (message data information) indicating a method for listening to the message data M <b> 13 to the communication terminal 30.

  Here, FIG. 11B shows an example of Web screen information transmitted by the message providing server 300. As shown in FIG. 11B, the Web screen information transmitted in step S130 includes a member who participates in the conference call (buddy member) and a method for listening to message data M13 (PoC message). .

  In the present embodiment, the listening method of the message data M13 (PoC message) is as follows: (1) Listen from the beginning, (2) Select only the speech that you want to listen to, (3) Select only the speaker that you want to listen to, and (4) Importance Four options are provided.

  Here, a selection example of the message data M13 according to the above-described listening method will be described with reference to FIGS. FIG. 12A shows a plurality of message data arranged in the message order, that is, in time series. For example, “Smith (1)” shown at the left end of FIG. 12A indicates that the message data includes the first remark content of the member member Smith participating in the conference call.

  When “Smith” is selected as a speaker to be listened to in a plurality of message data as shown in FIG. 12A, message data in which the speaker is Smith as shown in FIG. Only the shaded area is selected.

  If it is specified that the content of the conference call is to be listened from 30 seconds after the start of the conference call, as shown in FIG. 12C, “Nancy” includes the content of the statement when 30 seconds have elapsed from the start of the conference call. (1) Message data after "" (the shaded area in the figure) is selected.

  Furthermore, as shown in FIG. 12D, specific message data can be selected. For example, only “Smith (1)” and “Bill (1)”, which are message data having high importance, can be selected based on the message importance M11 (see FIG. 9) added to the message data M13.

  Next, as shown in FIG. 8, in step S140, the communication terminal 30 notifies the selection result of the listening method of the message data M13.

  In step S150, the message providing server 300 requests the message storage server 200 for metadata D associated with the corresponding message data M13 based on the listening method of the message data M13 notified by the communication terminal 30.

  In step S <b> 160, the message storage server 200 transmits the corresponding metadata D to the message providing server 300 in response to the metadata D request from the message providing server 300.

  In step S170, the message providing server 300, based on the metadata D received from the message storage server 200, the Web screen information indicating the content of the message data M13 corresponding to the listening method of the message data M13 notified by the communication terminal 30. (Message data information) is generated, and the generated Web screen information is transmitted to the communication terminal 30.

  Specifically, the message providing server 300 transmits Web screen information as shown in FIG. 11 (c 1) and FIG. 11 (c 2) to the communication terminal 30. The Web screen information shown in FIG. 11C1 is displayed when “4. Select by importance” is selected in the Web screen information shown in FIG. In the present embodiment, message data whose importance level is set to “1” (high importance level) is displayed in red (shaded area in the figure).

  If you select message data with importance set to “1” (“12:30:34 Smith >>>, 12:33:37 Bill >>>), the check box provided on the left side Note that the correspondence between the level of importance ("1" to "9") and the color used for display can be set as appropriate.

  Further, the Web screen information shown in FIG. 11C2 is displayed when “3. Select only speaker who wants to listen” is selected in the Web screen information shown in FIG. 11B. Here, when the speaker Smith is selected, a check mark is displayed in a check box provided on the left side.

  Next, as shown in FIG. 8, in step S <b> 180, the communication terminal 30 transmits the message data selection result selected according to the Web screen information received from the message providing server 300 to the message providing server 300.

  In step S <b> 190, the message providing server 300 transmits the corresponding message data M <b> 13 to the communication terminal 30 based on the selection result of the message data received from the communication terminal 30.

  In step S200, the communication terminal 30 converts the message data M13 received from the message providing server 300, and outputs a voice band signal (conversation content).

(Action / Effect)
According to the PTT communication system according to the present embodiment described above, based on the attribute information indicating the predetermined attribute of the message data M13, specifically, the message data M with attribute information to which the message importance M11 is added, the message Metadata D of data M13 is generated.

  That is, since the information indicating the importance of the message data M13 can be easily provided based on the metadata D, a user who wants to listen to the message data M13 stored in the message storage server 200 has a plurality of information. From the message data M13, it is possible to easily select and listen to only the message data M13 that meets a predetermined condition (for example, select only the message data M13 set to high importance).

  According to the PTT communication system according to the present embodiment, the importance of the message data M13 is associated with a predetermined operation (for example, pressing of the “1” button) on the operation button unit 29 of the PTT communication terminal 20A. The attribute information adding unit 27 adds the importance level associated with the operation button to the message data M13 as attribute information by executing the predetermined operation.

  Therefore, the user of the PTT communication terminal 20A can easily add the attribute information to the message data M13 as appropriate by a simple operation of the operation button unit 29.

(Other embodiments)
As described above, the content of the present invention has been disclosed through one embodiment of the present invention. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments will be apparent to those skilled in the art.

  For example, in the above-described embodiment of the present invention, the importance of the message data M13 is added to the message data M13 as attribute information, but information other than the importance of the message data M13 may be added to the message data M13.

  Specifically, the attribute information adding unit 27 of the PTT communication terminal 20A may add the “type” of the conversation content included in the message data M13 to the message data M13 as attribute information. The “type” of the conversation content is used, for example, to indicate whether the conversation content is a response to a specific utterance or a new utterance.

  More specifically, as shown in FIG. 9, instead of the message importance level M11, a conversation content type M11A indicating the type of conversation content is added to the message data M13. Similarly to the importance level, the type of conversation content is also associated with a predetermined operation on the operation button unit 29 (for example, in the case of a response to a specific statement, the “*” button is pressed).

  In this case, the metadata processing unit 205 of the message storage server 200 generates metadata D including the conversation type.

  In the above-described embodiment of the present invention, the metadata D is generated based on the format defined in MPEG-7. However, the metadata D is in another format, for example, a format defined in the TV-Anytime Forum. You may generate based on.

  Further, the message storage server 200 described above may have a function of editing the contents of the stored metadata D in response to a request from the communication terminal. For example, when the message storage server 200 receives a request to change the importance of the message data M13 from the communication terminal, the message storage server 200 is included in the metadata D associated with the message data M13 according to the content of the request. Change the content of the importance level. Furthermore, when there is message data that the member who could not participate in the conference call does not want to listen to, the message data can be deleted or changed to a setting that prevents the message data from being acquired.

  As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

1 is an overall schematic configuration diagram of a PTT communication system according to an embodiment of the present invention. It is a logic block block diagram of the PTT communication terminal which concerns on embodiment of this invention. It is a logical block block diagram of the PTT server which concerns on embodiment of this invention. It is a logic block block diagram of the message storage server which concerns on embodiment of this invention. It is a logic block block diagram of the message provision server which concerns on embodiment of this invention. It is a logic block block diagram of the communication terminal which concerns on embodiment of this invention. It is an operation | movement flowchart of the PTT communication system which concerns on embodiment of this invention. It is an operation | movement flowchart of the PTT communication system which concerns on embodiment of this invention. It is a block diagram of message data with attribute information used in the PTT communication system according to the embodiment of the present invention. It is a figure which shows an example of the metadata used in the PTT communication system which concerns on embodiment of this invention. It is a figure which shows an example of the web screen information used in the PTT communication system which concerns on embodiment of this invention. It is a figure which shows the example of selection of the message data in the PTT communication system which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Communication network, 11A, 11B ... Wireless base station, 20A, 20B ... PTT communication terminal, 21 ... Communication part, 23 ... Message processing part, 25 ... Presence processing part, 27 ... Attribute information addition part, 29 ... Operation button part , 30 ... Communication terminal, 31 ... Communication unit, 33 ... Message processing unit, 35 ... Output unit, 100 ... PTT server, 101 ... Communication unit, 103 ... Message processing unit, 105 ... Member management unit, 107 ... Presence management unit, DESCRIPTION OF SYMBOLS 109 ... Memory | storage part, 200 ... Message storage server, 201 ... Communication part, 203 ... Message processing part, 205 ... Metadata processing part, 207 ... Memory | storage part, 300 ... Message provision server, 301 ... Communication part, 303 ... Message processing part 305: Storage unit, D: Metadata, M: Message data with attribute information, M11: Message importance, M 1A ... conversation content type, M12 ... theme switching flag, M13 ... the message data

Claims (5)

A PTT communication terminal for transmitting message data obtained by converting the content of the conversation based on a predetermined wireless communication method by performing a predetermined operation when talking;
A PTT communication system including a message processing server that relays and stores the message data transmitted by the PTT communication terminal,
The PTT communication terminal is
An attribute information adding unit for adding attribute information indicating a predetermined attribute of the message data to the message data;
A message data transmission unit with attribute information that transmits message data with attribute information, which is the message data to which the attribute information is added, to the message processing server,
The message processing server
A message receiver for receiving the message data with the attribute information;
A metadata generation unit that generates metadata of the message data based on the message data with attribute information received by the message reception unit;
Generating message data information indicating the content of the message data based on the metadata, and transmitting the generated message data information to a communication terminal;
A PTT communication system comprising: a message data transmitting unit that transmits the message data associated with the message data information to the communication terminal in response to an acquisition request received from the communication terminal. A message processing server that relays and stores the message data transmitted by a PTT communication terminal that transmits message data obtained by converting the content of the conversation based on a predetermined wireless communication system by performing a predetermined operation during conversation Because
A message receiving unit for receiving message data with attribute information that is the message data to which attribute information indicating a predetermined attribute of the message data is added;
A metadata generation unit that generates metadata of the message data based on the message data with attribute information received by the message reception unit;
Generating message data information indicating the content of the message data based on the metadata, and transmitting the generated message data information to a communication terminal;
A message processing server comprising: a message data transmitting unit that transmits the message data associated with the message data information to the communication terminal in response to an acquisition request received from the communication terminal. The importance of the message data is added to the message data as the attribute information,
The message processing server according to claim 2 , wherein the metadata generation unit generates metadata including the importance. The type of conversation content included in the message data is added to the message data as the attribute information,
The message processing server according to claim 2 , wherein the metadata generation unit generates metadata including the type. A message processing method for processing the message data transmitted by a PTT communication terminal that transmits message data obtained by converting the content of the conversation based on a predetermined wireless communication system by performing a predetermined operation during a conversation. And
The PTT communication terminal adding attribute information indicating a predetermined attribute of the message data to the message data;
Generating metadata of the message data based on the message data with attribute information transmitted by the PTT communication terminal;
Generating message data information indicating the content of the message data based on the metadata, and transmitting the generated message data information to a communication terminal;
Transmitting the message data associated with the message data information to the communication terminal in response to an acquisition request received from the communication terminal.

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