JP2009015457A - Communication terminal, control method therefor and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chat function capable of reducing the burden on a user when selecting an opposite party in chat, in a cellphone having an electronic mail function including the chat function. <P>SOLUTION: The cellphone 60 includes: a wireless device 70 performing transmission/reception of a mail with another communication terminal; a data storage part 78 storing information of a designated communication terminal; a display part 80; and a control part 76 creating a screen for performing a chat, and controlling the wireless device 70, the data storage part 78, and the display part 80 so as to perform the chat. The control part 76 refers to the information inside the data storage part 78 in response to that the wireless device 70 has received the electronic mail requesting the chat, decides whether the chat is permitted to a transmitter of the electronic mail or not, and displays a display screen for making the user select whether to perform the chat with the transmitter of the electronic mail or not on the display part 80 when not permitted. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for improving an electronic mail function of a communication terminal represented by a mobile phone, and more particularly to a technique for selecting a mail partner in a chat mail function.

  In recent years, with the widespread use of mobile phones, the use of electronic mail (hereinafter simply referred to as “mail”) using the mobile phone is increasing. Along with this, various types of transmission / reception services for e-mails on mobile phones have been developed. One of them is a chat mail function. This exchanges information among a plurality of users as if they had a real-time conversation like chatting over the Internet.

  A general system dedicated to a chat function sets up a virtual room called a chat room on the Internet. By becoming a member of a specific chat room, the user can use the act of “entering” the chat room, that is, the chat function. The chat room is managed by the founder. In order for a user to become a chat member, a key must be given from the founder of the chat room.

  When a chat is performed, the member transmits a personal identification number to the chat room and is permitted to enter the chat room after authentication by the chat room side. When entering the chat room, the information transmitted from the user who is entering the room at that time is received by each terminal of the chat participant and displayed in time series. Another user entering the room can respond to this. With these functions, the user can enjoy the feeling that all the users entering the room gather at the same place and are chatting (chatting).

  The chat mail function on the mobile phone is different from the above chat. As a chat mail function of a mobile phone, for example, a method is known in which only mail transmitted / received with a specific user is displayed on the screen according to the order of transmission / reception. With this chat mail function, the user does not need to perform complicated operations such as selecting mails from a specific user from all received mails and displaying them in order. The chat mail function here is a part of the mail function, and only the display form is different.

  As a problem of the chat mail function, there is a problem that the user is likely to respond to an unknown partner. For example, consider a case where a mobile phone receives and displays a chat request mail. Due to the immediate nature of the chat, users often feel that they must respond quickly to chat requests. For this reason, it is more likely that the user will reply to the chat request mail without confirming the identity of the mail sender as compared to the normal mail. As a result, the user may reply to an unknown email address.

  Consider a case where the mail sender of the chat request mail is based on so-called “spoofing”. That is, a third party sends an email to the user using the email address of the user's acquaintance. Receiving users may understand that the received mail is due to spoofing if they take a long time and think carefully. However, since the email is a chat request, it is possible to reply to the email by mistake if you reply quickly. When a user responds to a fraud or mischievous chat request, problems such as leakage of personal information or damage caused by a transfer fraud may occur.

  Patent Document 1 relates to the chat mail function. If a mail is received from a chat member registered in advance, the sent / received mail is displayed on the chat screen, and if not, the received mail is displayed on the normal mail screen. Display technology is disclosed. With the technology disclosed in Patent Document 1, the user can recognize that the mail displayed on the chat screen is from a member registered in advance. Therefore, the risk of inadvertently replying to a chat request mail from a third party is reduced.

On the other hand, Patent Document 2 discloses a technique for rejecting mail from a person who is not stored in an address book of a mobile phone. The address book refers to a function in which a user registers information of a partner for transmission and reception in advance. With the technique disclosed in Patent Document 2, the chat request mail is not received from an unknown partner, and the risk that the user will reply to the unknown partner can be avoided. As a result, it is possible to reduce the risk of the user receiving the disadvantages as described above.
JP 2003-323380 A JP 2003-337779 A

  In the technique disclosed in Patent Document 1, when a chat request mail is received from a partner who is not registered as a chat member, it is necessary to register that partner as a chat member when chatting with that partner using the chat mail function. . Otherwise, you would chat using the same interface as regular email.

  On the other hand, in the technique disclosed in Patent Document 2, if it is not registered in the address book, an email requesting a chat from an actual friend is also rejected, so the chat using the chat mail function is limited. It can only be used between. In the first place, it is a big problem that no mail can be received from a partner who is not registered in the address book.

  After all, in any case, it is necessary to register the chat member with the mobile phone in some form. There is a problem that the burden on the user is increased by such pre-processing.

  Accordingly, an object of the present invention is to provide a mobile phone capable of reducing the burden on the user for selecting a chat partner while limiting the chat partner in order to avoid the disadvantage of the user in the chat mail function. That is.

  Another object of the present invention is to provide a mobile phone having a chat mail function capable of negotiating between a chat requester and a requestee and reflecting the result.

  The communication terminal according to the first aspect of the present invention provides a communication means for transmitting / receiving a message to / from another communication terminal and a message transmitted / received in time series between the other specific communication terminal. In order to store the chat execution means for executing the chat for exchanging messages while displaying the address information of the other communication terminal together with the permission information regarding whether or not the chat with the communication terminal of the address is permitted Address information storage means, first determination means for determining whether or not chat request determination data in a predetermined data format is attached to the received message received by the communication means, address information, By referring to the permission information, the second determination means for determining whether or not the sender of the received message is permitted to chat, and the first determination means When the received message is determined to be a chat request from a sender who is not allowed to chat by the determination by the second determination means, the output of the chat request determination data, And a control screen for controlling the start of the chat with the sender by the chat execution means according to the user's selection on the selection screen. .

  In this communication terminal, the communication means transmits / receives a message including character data to / from another communication terminal. The address information storage means stores both address information of a communication partner when transmitting / receiving a message to / from another communication terminal and permission information regarding whether to allow chat with the communication partner. The permission information indicates information regarding whether or not the communication partner is a chat member. The first determination means determines whether or not chat request determination data in a predetermined data format is attached to the received message. The chat request determination data may be a face photograph. The second determination means searches for information related to the sender of the received message from the address information and permission information stored in the address information storage means, and determines whether or not the sender is a chat member. When the first and second determination means determine that the received message is a chat request from a sender who is not a chat member, the control means outputs the chat request determination data attached to the received message. Further, a selection screen for prompting the user to select whether or not to chat with the sender is displayed. When the user selects to chat with the sender, communication by the chat execution means is executed, and chat is started. The chat screen arranges messages exchanged between the user and the sender in time series. On the other hand, when the user selects chat rejection, the chat is not started.

  When receiving a chat request from a partner who is not a chat member, the communication terminal displays on the display device a selection screen that prompts the user to select whether or not to chat with the sender of the received message. The user can easily determine whether or not to chat with the other party by presenting clear options. Further, when the selection screen is displayed, the communication terminal outputs the chat request determination data attached to the received message. This data is a material for determining whether or not the user chats. The user can make a judgment as to whether or not chatting with the other party is possible.

  Preferably, the communication terminal responds to the selection screen that the user has selected to chat with the sender, in the address information storage means, the address information of the sender's communication terminal, Means for storing permission information indicating that a chat with the sender is permitted is further included.

  When a chat request is received from a partner who is not a chat member and the user chooses to chat with this partner, this communication terminal, together with the address of the partner's communication terminal, indicates that the chat with that communication partner is permitted. Is stored in the address information storage means. By this work, the sender of the received message becomes a chat member. Therefore, according to this communication terminal, it is possible to complete two tasks, a task of registering as a chat member and a task of starting chatting, in one procedure.

  Preferably, the permission information indicating that the chat with the sender is permitted is chat request determination data attached to the received message.

  When a chat request is received from a partner who is not a chat member and the user chooses to chat with this partner, this communication terminal is attached to the received message as permission information for allowing chat together with the address of the partner's communication terminal. The chat request determination data that has been made is stored in the address information storage means. In other words, the communication partner whose chat request determination data is stored in the address information storage means is a chat member.

  The communication terminal control method according to the second aspect of the present invention includes a communication means for transmitting / receiving a message to / from another communication terminal and a message transmitted / received between the other specific communication terminal. Chat execution means for executing a chat for exchanging messages while displaying in chronological order, and address information of other communication terminals, together with permission information regarding whether to allow chat with the communication terminal of the address concerned A communication terminal control method for controlling the start of chat in a communication terminal, comprising address information storage means for storing, communication means, chat execution means, and control means for controlling address information storage means It is. The control method includes a first determination step in which the control means determines whether or not chat request determination data in a predetermined data format is attached to the received message received by the communication means, address information, With reference to the permission information, the second determination step of determining whether or not the sender of the received message is permitted to chat, the determination by the first determination step, and the determination by the second determination step, When it is determined that the received message is a chat request from a sender who is not allowed to chat, the output of the chat request determination data and a screen for selecting whether to chat with the sender are displayed. And controlling the start of chatting with the sender by the chat execution means according to the user's selection on the selection screen. .

  According to this control method, the control means determines whether or not chat request determination data in a predetermined data format is attached to the received message. Further, the control means searches for information on the sender of the received message from the address information and permission information stored in the address information storage means, and determines whether or not the sender is a chat member. If the received message is attached with chat request determination data and the sender is determined not to be a chat member, the control means further outputs the chat request determination data attached to the received message, A selection screen prompting the user to select whether or not to chat with the sender of the received message is displayed on the display device. Thereafter, when the user chooses to chat with the sender of the received message, communication by the chat execution means is executed, and chat is started. On the other hand, when the user selects chat rejection, the chat is not started.

  In this control method, when a chat request is received by the communication terminal from a partner who is not a chat member, a selection screen for prompting the user to select whether or not to chat with the sender of the received message is displayed. The user can easily determine whether or not to chat with the other party by presenting clear options. Further, when the selection screen is displayed, the chat request determination data attached to the received message is output by this control method. This data is a material for determining whether or not the user chats. The user can make a judgment as to whether or not chatting with the other party is possible.

  The computer program according to the third aspect of the present invention provides a time series of messages transmitted and received between a communication means for transmitting and receiving messages to and from other specific communication terminals. The chat execution means for executing the chat for exchanging messages while displaying the address information of the other communication terminal is stored together with the permission information indicating whether or not the chat with the communication terminal of the address is permitted. The communication terminal includes an address information storage means for communication, a communication means, a chat execution means, and a computer provided so as to control the address information storage means. A computer program for controlling. The computer program includes a first determination unit for determining whether or not chat request determination data in a predetermined data format is attached to a received message received by the communication unit, address information, And the permission information, the second determination means for determining whether the sender of the received message is permitted to chat, the determination by the first determination means, and the second determination means Whether or not to perform chat between the output of chat request determination data and the sender when the received message is determined to be a chat request from a sender who is not allowed to chat. Control the start of chat with the sender by the chat execution means according to the user's selection on the selection screen. To function as a control means for.

  The computer program causes the computer to function as first determination means for determining whether or not chat request determination data in a predetermined data format is attached to a message received by the communication terminal. The program further retrieves information related to the sender of the received message from the address information and permission information stored in the address information storage means, and determines whether or not the sender is a chat member. A computer is caused to function as a determination means. When it is determined by the first and second determination means that the received message is a chat request from a sender who is not a chat member, the program outputs the chat request determination data attached to the received message. Further, the computer is controlled to display a selection screen that prompts the user to select whether or not to chat with the sender of the received message. When the user chooses to chat with the sender of the received message, communication by the chat execution means is executed by the computer control by this program, and chat is started. On the other hand, when the user selects chat rejection, the chat is not started.

  When the computer program receives a message with chat request determination data attached to the communication terminal from a partner who is not a chat member, the selection screen prompts the user to select whether or not to chat with the sender of the received message Is displayed. The user can easily determine whether or not to chat with the other party by presenting clear options. Further, when displaying the selection screen, the program outputs the chat request determination data attached to the received message. This data is a material for determining whether or not the user chats. The user can make a judgment as to whether or not chatting with the other party is possible. This program displays a chat screen when the user selects to chat on the selection screen.

  As described above, in the message communication function of the communication terminal according to the present invention, when there is a chat request from a partner who is not a chat member, the chat request determination data attached to the chat request message is presented. . The user can select whether to chat or reject based on the chat request determination data. By inadvertently replying to an unknown party, the risk of leaking your information is reduced, and you can avoid suffering a disadvantage.

  Hereinafter, a mobile phone according to an embodiment of the present invention will be described. In the following description and drawings, the same reference numerals and names are assigned to the same components. Their functions are also the same. Therefore, detailed description thereof will not be repeated.

[First Embodiment]
In the mobile phone according to the present embodiment, chat is established when the other party is registered as a chat member. If you receive a chat request from someone who is not a chat member, this mobile phone will have three options: to chat with that person now, or not to do it now, but to do it later Is displayed to the user, and one of them is selected. The user can easily determine whether or not to chat with the other party by presenting clear options. Whether or not the mail is a chat request mail is determined based on whether or not the other party's face photo data (hereinafter referred to as “photo data”) is attached to the mail.

  Furthermore, in the mobile phone according to the present embodiment, when a chat request mail is received from a partner who is not a chat member, the photo data attached to the mail is simultaneously displayed. As a result, the user can make a judgment as to whether or not to chat with the other party with further certainty.

  If the user chooses to chat with the partner immediately, and if he chooses to chat with the partner at a later time rather than immediately, the information on this partner is stored in the mobile phone. Thereby, this partner becomes a chat member of this user. Therefore, according to this mobile phone, the two operations of registering as a chat member and starting the chat can be completed in one procedure.

  On the other hand, when the mobile phone according to the present embodiment transmits a chat request mail to a partner who is not a chat member, the user's photo data is attached to the mail. This is displayed on the other party's mobile phone together with the contents of the mail. If a mail is received from the other party to immediately chat, the chat mode is entered. At this time, the chat requester is registered as a chat member on the other party's mobile phone, and the other party is registered as a chat member on the chat requester's mobile phone. That is, the negotiation request is made between the chat requester and the requestee, and the result of the negotiation that the chat requester is made a chat member is reflected on each mobile phone at the same time.

  When a chat request is received from a chat member, the mobile phone according to the present embodiment presents two options, that is, whether to perform a chat now or whether to perform a chat now but not later. To select.

  In the mobile phone according to the present embodiment, the chat partner of the chat mail function is one user. Furthermore, in the following description, it is assumed that the user's contact partner also uses this mobile phone.

  FIG. 1 shows the appearance of the mobile phone 60 according to the present embodiment, and FIG. 2 shows a display screen when the mobile phone 60 uses the chat mail function. Referring to FIG. 2, when the user activates the mail transmission / reception program, a standby screen 30 shown in the normal (A) is displayed. The standby screen 30 is a “chat mail screen” instruction button 40 that is operated when a chat is performed, a “normal mail list display” instruction button 41 that is operated when a normal mail list is displayed, and a mail. A “mail creation” instruction button 42 to be operated.

  When the user receives a chat request and the requester is a non-chat member, the selection screen 32 shown in (B) is displayed on the display unit. The selection screen 32 includes a requester's photo data 43 attached to the chat request mail from the requester, a “YES” instruction button 44 that is operated when a chat with the requester is immediately performed, An “NG” instruction button 45 that is operated when no chat is performed and a “Now now NG” instruction button 46 that is operated when the chat with the requester is not performed immediately but at a later time are included. The requester's photo data 43 is displayed as a material for determining whether or not the user permits the requester as a chat member.

  When the chat requester is a chat member, the selection screen 34 shown in (C) is displayed on the display unit. The selection screen 34 includes requester photo data 47, a “YES” instruction button 48, and a “Now NG” instruction button 49. The functions of these elements included in the selection screen 34 are the same as those of the selection screen 32.

  When the chat request is received and the user selects the “YES” instruction button 44 or 48 and gives an instruction to immediately perform chat, or when the user makes a chat request and chat is started, the display unit displays A chat screen 36 shown in (D) is displayed. The chat screen 36 includes a chat data display unit 50 that displays a chat text in chronological order, and a “chat end” instruction button 51 that is operated when the chat ends.

  In addition, about the operation | work which a user operates the instruction | indication button mentioned above and issues an instruction | indication below, it shows that the said operation | work by the user was performed by describing the content of instruction | indication. That is, when the user operates the “display normal mail list” instruction button 41 shown in (A), “when the user instructs display of the normal mail list” and when the user operates the “create mail” instruction button 42 “ “User has issued a mail creation instruction” and “YES” instruction buttons 44 and 48 shown in (B) and (C) are operated. “User has selected“ YES ”” and “NG” instruction button When the user has operated “45”, “the user has selected“ NG ”” and “when the user has selected“ NG now ”instruction buttons 46 and 49,“ the user has selected “NG now” ” The case where the “chat end” instruction button 51 shown in (D) is operated is represented as “user has instructed chat end”.

−Configuration−
FIG. 3 is a block diagram showing the configuration of the mobile phone 60 according to the first embodiment of the present invention. Referring to FIG. 3, mobile phone 60 performs an air link of a wireless interface via public network 58 and is connected to wireless device 70 for performing stable data communication, and connected to wireless device 70, and wireless device 70. Includes a wireless communication unit 72 for converting a signal to be transmitted and received according to the purpose, and a wireless control unit 74 connected to the wireless communication unit 72 and controlling the wireless device 70 and the wireless communication unit 72. When the wireless device 70 receives information signals such as voice, mail, and images, the wireless communication unit 72 separates and demodulates the received signals, performs error correction, and performs expansion processing and reproduction. Thereby, the user can recognize this received signal by the form of music and video. When transmitting a signal, the radio communication unit 72 compresses and encodes the transmission information signal, performs error correction encoding, and performs modulation and multiplexing. The wireless device 70 receives the processed signal and transmits it to the public network 58. These processes are executed under the control of the wireless control unit 74.

  The mobile phone 60 is further connected to the wireless control unit 74 and other components, and a predetermined program for realizing the display of the selection screens 32 and 34 as to whether or not to chat as shown in FIG. And a control unit 76 including a CPU (Central Processing Unit) for executing a program for performing other control, and a data storage for storing data in accordance with the control of the control unit 76. 2 and a display unit 80 for displaying the screens 30, 32, 34 and 36 shown in FIG. 2 according to the control of the control unit 76, and a control unit. And an input unit 82 for giving an instruction from the user to the control unit 76 as a control code.

  FIG. 4 shows details of the data storage unit 78. Referring to FIG. 4, data storage unit 78 stores reception history storage unit 90 for storing received mail shown in (A) and information on a partner to chat as a chat member shown in (B). A contact data storage unit 92 for checking the information, and an owner personal information storage unit 94 for checking the user's personal information shown in FIG. When receiving a mail, the reception history storage unit 90 stores the received date and time, the sender's mail address, and the mail text as a set. These reception histories are arranged in time series according to the reception time. The contact data storage unit 92 stores each chat member's name, e-mail address, and photo data such as a face photo as one set. The owner personal information storage unit 94 stores the user's name, email address, and photo data such as a face photo.

  Data storage unit 78 further includes a predetermined program for realizing display of selection screens 32 and 34 as to whether or not to chat, and a program for performing other controls.

  5 to 14 are flowcharts showing the control structure of the chat selection main control program executed by the control unit 76 shown in FIG.

  Referring to FIG. 5, a program for main control of chat selection executed by control unit 76 includes a step 200 for displaying standby screen 30 shown in FIG. 2A on display unit 80 shown in FIG. After step 200, it is determined whether or not a mail has been received, and the control flow is branched in accordance with the determination result in step 202, and in response to the determination in step 202 that no mail has been received. Determining whether or not the user has issued a mail transmission instruction, and branching the flow of control according to the determination result, and responding that it is determined in step 204 that the user has not issued a mail transmission instruction And step 206 for determining whether or not the user has instructed to display a list of normally received mails and branching the control flow according to the determination result. . If it is determined in step 206 that the user has not instructed the normal received mail list display, the process returns to step 200.

  Referring to FIG. 6, this program is further executed in response to the determination that the mail is received in step 202 shown in FIG. 5, and determines whether or not the received mail is a chat request to the user. The control flow is executed in response to the determination that the received mail is a chat request to the user in step 220 and branching the control flow according to the determination result. That is, it is determined whether or not the user is a registered user, and the control flow is branched in accordance with the determination result. In step 222, in response to the determination that the chat requester is determined to be a registered user. And a step 224 for displaying on the display unit 80 a selection screen 34 as to whether or not to chat as shown in FIG.

  In step 220, whether or not the received mail is a chat request is determined by whether or not the sender's photo data is attached to the received mail. In step 222, whether or not the chat requester is a registered person is determined based on whether or not the photo data of the chat requester is stored in the contact data storage unit 92 shown in FIG. When the address of the chat requester itself is not stored in the contact data storage unit 92, it is determined that the chat requester is not a registered person.

  The program is further executed in response to the determination in step 220 that the mail is not a chat request mail, and the received mail is stored in the reception history storage unit 90 shown in FIG. Step 228 is executed in response to the determination that the received mail is not the mail from the registered person in Step 222, and displays the selection screen 32 shown in FIG. 2B. After step 226, processing returns to step 200 shown in FIG.

  Referring to FIG. 7, this program is further executed following step 224 shown in FIG. 6, and it is determined whether or not the user has selected “YES” on selection screen 34, and control is performed according to the determination result. Step 240 for branching the flow is executed, and in response to the determination that the user has not selected “YES” in Step 240, it is determined whether or not the user has selected “NG now”. The control flow is executed in response to the determination that the user does not select “Now NG” in step 242 and branching the control flow according to the determination result, and there is no user instruction. Determining whether or not five minutes have elapsed, and branching off the flow of control according to the determination result.

  The program is further executed in response to determining that 5 minutes have passed in step 246 and determining that the user has selected “NG now” in step 242 and displays it on the display unit 80. Step 248 for clearing (deleting) the selected selection screen 34, and Step 250 executed after Step 248 and returning a message to the chat requester that the chat cannot be performed immediately. After step 250, the process returns to step 200 shown in FIG. If it is determined in step 246 that five minutes have not passed without a user instruction, the process returns to step 240.

  Referring to FIG. 8, this program further determines whether or not the user has selected “YES” on selection screen 32 after step 228 shown in FIG. 6, and branches the control flow according to the determination result. Step 270 is executed, and in response to the determination that the user has not selected “YES” in Step 270, it is determined whether or not the user has selected “NG”, and depending on the determination result In step 272 where the flow of control is branched, whether or not the user has selected “NG now” is executed in response to the determination that the user has not selected “NG” in step 272. In response to the determination that the user has not selected “Now NG” in step 276, and branching the control flow according to the determination result. It is determined whether or not 5 minutes have passed without any user instruction, and the control flow is branched in accordance with the determination result, and it is determined in step 272 that the user has selected “NG”. Step 274 is executed in response to storing the received mail in the reception history storage unit 90. After step 274, processing returns to step 200 shown in FIG. If it is determined in step 278 that 5 minutes have elapsed, the process returns to step 274. On the other hand, if it is determined that 5 minutes have not elapsed, the process returns to step 270.

  Referring to FIG. 9, this program is further executed in response to the determination that the user has selected “YES” on selection screen 32 in step 270 shown in FIG. 8, and is attached to the chat request mail. FIG. 4C shows a step 300 in which the requester's photo data is stored in the contact data storage unit 92 and an email indicating that “OK”, that is, chatting is possible after step 300 is performed. And the step 302 of attaching the user's own photo data stored in the owner personal information storage unit 94 to be sent to the chat requester.

  Referring to FIG. 10, this program is further executed in response to determining that the user has selected “NG now” in step 276 shown in FIG. 8, and is attached to the chat request mail. The received photo data of the requester is stored in the contact data storage unit 92, and the mail indicating “Now is NG” is stored in the owner personal information storage unit 94 after step 310. And 312 transmitting the user's own photo data to the chat requester. After step 312, the process returns to step 274 shown in FIG.

  Referring to FIG. 11, the program further responds that it is determined in step 240 shown in FIG. 7 that the user has selected “YES” on selection screen 34 and that step 302 shown in FIG. 9 is executed. 2 is executed, and after step 350 for displaying the chat screen 36 shown in FIG. 2D on the display unit 80 and executed after step 350, it is determined whether or not a mail is received, and control is performed according to the determination result. In step 352 for branching the flow, the process is executed in response to the determination that the mail is received in step 352, and it is determined whether or not the mail is the mail from the current chat partner. In step 354 for branching the control flow according to, and in step 354, it is determined that the received mail is not the mail from the current chat partner. In step 356, whether or not the received mail is a chat request is executed in response to the request, and the control flow is branched according to the determination result. In step 356, the received mail is a chat request. In step 358 for determining whether or not the chat requester is a registered user and branching the flow of control based on the determination result. And 360, executed in response to determining that the chat requester is a registered person, and sending a mail indicating "Now is NG" to the chat requester. After step 360, control returns to step 200 shown in FIG.

  The program is further executed in response to the determination that the received mail is not a chat request in step 356 or that the sender of the received mail is not a registered person in step 358, Step 362 of storing the received mail as a normal mail in the reception history storage unit 90 is included. After step 362, control returns to step 200 shown in FIG.

  The program is further executed in response to the determination that the mail has not been received in step 352, determines whether or not the user has instructed mail transmission, and the flow of control is determined according to the determination result. In step 364 for branching, step 366 is executed in response to the determination that the user has issued a mail transmission instruction in step 364, and the user receives an input of the mail text using the input unit 82, and step 366. Are executed after step 368, and mail transmission is executed in accordance with a user instruction, and step 370 is executed after step 368 to additionally display transmission data on the chat data display unit 50 of the chat screen 36. After step 370, control returns to step 352.

  This program is further executed in response to the determination that the user has not instructed mail transmission in step 364, and it is determined whether or not the user has instructed to end the chat, and control is performed according to the determination result. Branching flow 372, step 372 executed in response to the determination that the user has given an instruction to end chat in step 372, and sending an email to the chat partner to end chatting; and And step 376 executed after step 374 to clear chat screen 36 and return control to step 200 shown in FIG. If it is determined in step 372 that the user has not issued a chat end instruction, the process returns to step 352.

  Referring to FIG. 12, this program is further executed in response to determining that the received mail is the mail from the current chat partner in step 354 shown in FIG. In step 380 for additionally displaying received data on the data display unit 50, and in step 382 for determining whether or not the received mail is a mail for ending the chat, in step 382, which is executed after step 380. In steps 384 and 384, the process is executed in response to the determination that the mail is an e-mail indicating that the chat is to be ended, and it is determined whether or not the user has issued an end instruction. Is executed in response to the determination that the user has given an end instruction, and is displayed on the display unit 80. The door screen 36 is cleared, and a step 386 which returns control to step 200 shown in FIG. If it is determined in step 382 that the received mail is not a mail to end the chat, the process returns to step 352 shown in FIG.

  Referring to FIG. 13, this program is further executed in response to the determination that the user has issued a mail transmission instruction in step 204 shown in FIG. 5, and receives a mail sentence input by the user 400. , Executed after step 400, it is determined whether or not the input mail is a chat request mail, and the control flow is branched according to the determination result. In step 402, the mail is a chat request mail. Step 404 is executed in response to the determination that the user's own photo data stored in the owner personal information storage unit 94 is attached to this mail, and after Step 404, In step 406 and step 402, it is determined whether or not the minute has elapsed, and the control flow is branched according to the determination result. , Mail that is inputted in step 400, is performed in response to a determination that it is not the mail chat request, and a step 416 of sending the mail as an ordinary mail. If it is determined in step 406 that five minutes have elapsed since the mail transmission in step 404, and after step 416, the process returns to step 200 shown in FIG.

  The program is further executed in response to the determination in step 406 that five minutes have not elapsed, determines whether an email has been received, and branches the control flow according to the determination result. Step 408 is included. If it is determined in step 408 that no mail has been received, the process returns to step 406.

  In step 408, the program is executed in response to the determination that the mail has been received, and determines whether the received mail is from the chat request partner (requestee). In response to branching of the control flow accordingly, in step 410, it is executed in response to determining that the received mail is from the requestee, and whether or not the other party is a registered person. And 412 for branching the flow of control according to the determination result.

  Here, the received mail from the requestee determined in step 412 is a reply to the chat request from the user, and the content of the reply is either “OK” or “NG now”. To do. When the requestee selects “NG” in response to the chat request, a reply indicating “NG” is not transmitted. This will be described later. In addition, the requestee may send a normal mail regardless of the chat request, but this is not considered here.

  In step 412, the process is executed in response to the determination that the partner is not a registered person, and the photo data of the partner attached to the received mail is stored in the contact data storage unit 92. When it is determined that the user is a registrant, and after step 414, it is determined whether the content of the received mail indicates “OK” in response to the chat request, and control is performed according to the determination result. Branching the flow 430.

  If it is determined in step 430 that the content of the received mail indicates “OK” for the chat request, the process returns to step 350 shown in FIG. If it is determined that “Immediately NG” is indicated, the process returns to Step 200 of FIG.

  In step 410, the program is executed in response to the determination that the received mail is not a mail from the requestee, and determines whether the received mail is a chat request. In response to the branching of the flow of control accordingly, in step 418, it is executed in response to the received mail being determined to be a chat request, and it is determined whether or not the chat requester is a registered person. Step 420 for branching the control flow according to the determination result, and mail indicating “Now is NG” executed in response to the determination that the chat requester is already registered in Step 420. In step 422 and step 418, it is determined that the received mail is not a chat request, or in step 420 There are mail be performed in response to a determination that it is not the mail from the registered person, and a step 424 of storing the reception history storing unit 90 the received mail as an ordinary mail. After step 422 and step 424, processing returns to step 406.

  The following processing is performed for 5 minutes after the chat request mail is transmitted to the other party by the processing from step 410 to step 430 shown in FIG. In other words, if a reply email of "OK" or "Now is NG" is received from the chat request partner, if the partner is not a registered person, the photo data attached to the reply email is notified. The data is stored in the previous data storage unit 92. If this reply is “OK”, the chat is started. If an e-mail comes from a party other than the chat requester for 5 minutes, it is stored as a normal e-mail if the e-mail is not a chat request e-mail. If the mail is a chat request mail, the following processing is further performed. In other words, if the chat request is from a registered user, a mail “NG now” is automatically returned. If it is a chat request from a non-registered person, it is stored as a normal mail.

  Referring to FIG. 14, this program is further executed in response to the determination that the user has instructed to display a list of normally received mails in step 206 shown in FIG. 5, and stored in reception history storage unit 90. A list 450 of the received normal received mails is displayed on the display unit 80, and is executed after step 450, and it is determined whether or not the user has selected a specific mail from the list display, and the flow of control according to the determination result In step 452 and step 452, the process is executed in response to the determination that the user has selected a specific mail from the list display, and the content of the selected received mail is displayed on the display unit 80. After step 454, it is determined whether or not the user has instructed mail transmission, and the flow of control branches according to the determination result. Including the user is executed in response to a determination that indicates the mail sending, the step 458 for receiving the mail text that the user enters, after step 458, and step 460 to perform mail transmission. If it is determined in step 452 that the user has not selected a specific mail from the list display, the process proceeds to step 464 described later.

  The program is further executed in response to the determination that the process selected by the user is not mail transmission in step 456, determines whether or not the user has given an end instruction, and depending on the determination result In steps 462 and 462 for branching the control flow, it is determined that the user has not issued an end instruction, or it is determined in step 452 that the user has not selected a specific mail from the list display. And step 464 for determining whether or not 5 minutes have passed without any user instruction, and branching the flow of control according to the determination result. If it is determined in step 462 that the user has given an end instruction, if it is determined in step 464 that five minutes have elapsed, and if step 460 has been executed, the process returns to step 200 shown in FIG. . If it is determined in step 464 that 5 minutes have not elapsed, the process returns to step 454.

-Operation-
The cellular phone 60 whose configuration has been described above operates as follows. Referring to FIG. 3, when the power of mobile phone 60 is turned on from input unit 82, input unit 82 subsequently generates a signal corresponding to the user's operation and transmits this to control unit 76. When the user instructs display of the mail standby screen from the input unit 82, the control unit 76 receives this and starts executing the program stored in the data storage unit 78.

  When there is a user instruction via the input unit 82 illustrated in FIG. 3, the wireless control unit 74, the control unit 76, the data storage unit 78, and the display unit 80 operate as follows. The following operations are realized by the execution of the above-described program by the control unit 76.

  In step 200 shown in FIG. 5, the control unit 76 displays the standby screen 30 shown in FIG. 2A on the display unit 80. In this state, the determination in step 202 is performed. If no mail is received and there is no user operation, the processes of steps 202, 204, and 206 are repeated.

  Here, it is assumed that the mail is received. At this time, the received mail is received by the wireless device 70 via the public network 58 and converted by the wireless communication unit 72 so that it can be displayed on the display unit 80 as a mail form. The received signal is output to the control unit 76 via the wireless control unit 74. Thereby, the determination result of step 202 shown in FIG. 5 is YES, and the process proceeds to step 220 shown in FIG. 6.

  In this case, there are two types of cases where the received mail is a chat request and a normal mail. Furthermore, there are two ways of receiving mail: mail from non-chat members and mail from chat members. Here, since the chat request mail is not transmitted, a reply to the chat request is not considered.

《Receiving chat request》
First, it is assumed that this received mail is a chat request. The determination results of step 202 shown in FIG. 5 and step 220 shown in FIG. 6 are both YES. In step 222, the control unit 76 reads the data stored in the contact data storage unit 92 shown in FIG. 4B from the data storage unit 78 and collates it with the photo data of the requester attached to the received mail. .

<Receiving chat requests from non-chat members>
If the requester is a non-chat member, the requester is not a registered person, so the determination result in step 222 is NO. Therefore, in step 228, the control unit 76 creates the selection screen 32 shown in FIG. 2B using the requester's photo data, and displays it on the display unit 80. The process proceeds to step 270 shown in FIG.

  The user confirms the requester's photo data 43 displayed in step 228, and examines whether or not to permit the requester as a chat member. At this time, since the photo data of the chat requester is displayed, it can be easily determined whether or not it is appropriate as a chat partner. Also, since photo data is displayed, there is little risk of mistaken opponents. After the examination, the user selects one of the three options “YES”, “NG now”, and “NG” shown on the selection screen 32.

  Here, it is assumed that the user selects “YES” to immediately start chatting with the requester as a chat member. The process proceeds from step 270 to step 300 in FIG. 9, and the control unit 76 stores the requester information including the photo data 43 in the contact data storage unit 92 included in the data storage unit 78. Thereby, the chat requester by this mail becomes the chat member of this user. Further, in step 302, the control unit 76 transmits an email to the requester to the effect that the chat can be performed immediately. At this time, the control unit 76 reads out the user's own photo data stored in the owner personal information storage unit 94 shown in FIG. 4C in the data storage unit 78. Then, the mail attached with the photo data is transmitted to the chat requester by controlling the wireless control unit 74. The process proceeds to step 350 in FIG.

  Referring to FIG. 11, control unit 76 causes display unit 80 to display chat screen 36 shown in FIG. As a result, the machine 60 starts the chat mail function.

  Also, consider a case where the user refuses to chat with the requester. The user selects “NG” from the above three options. Therefore, the process proceeds to Steps 270, 272 and Step 274. In step 274, the control unit 76 stores the received mail in the reception history storage unit 90 shown in FIG. 4A in the data storage unit 78. Control returns to step 200 shown in FIG. That is, when a user refuses a chat in response to a chat request from a non-chat member, the chat request is eventually ignored.

  Consider a case in which the user uses this partner as a chat member but does not chat now. The user selects “NG now” from the above three options. Therefore, NO is determined in steps 270 and 272, YES is determined in step 276, and the process proceeds to step 310 and step 312 shown in FIG. The control unit 76 stores the requester data in the contact data storage unit 92 in the data storage unit 78 and reads the user's own photo data stored in the owner personal information storage unit 94 in the data storage unit 78. put out. Then, it is attached to a mail message stating “Now is NG”, and is transmitted to the requester by controlling the radio control unit 74. Processing proceeds to step 274. The subsequent processing is the same as when the user selects “NG”.

  Therefore, in this case, the other party is registered as a chat member, and a process of attaching his / her photo data to an email message “Now is NG” and replying to the other party is performed. But chat does not start here.

<Receiving chat requests from chat members>
If the chat request is from a chat member, the determination result in step 222 shown in FIG. 6 is YES. In step 224, the control unit 76 causes the display unit 80 to display the selection screen 34 shown in FIG. Control proceeds to step 240 shown in FIG. Here, the user has the option of starting chatting immediately and the option of not being able to chat immediately.

  At this time, it is assumed that the user selects “YES” (chat start). The determination result of step 240 is YES, and the chat screen 36 is displayed on the display unit 80 in step 350 of FIG. The process proceeds to step 352. The subsequent processing is the same as when a chat request is received from a non-chat member and the chat mail function is started.

  On the other hand, when the user selects “NG now”, the determination result in step 240 shown in FIG. 7 is NO, and YES is determined in step 242. As a result, in step 248, the control unit 76 clears the selection screen 34, and in step 250, sends a mail stating “Now is NG” to the requester. Thereafter, control returns to step 200 in FIG. 5, and the mobile phone 60 enters a normal mail reception waiting state.

《Chat mail function is running》
After that, during the execution of the chat mail function, there can be two ways: when mail is transmitted / received to / from the chat partner and when mail is received from other than the chat partner. Control during the chat is realized by the control unit 76 executing the routines of FIGS. 11 and 12.

<Sending / receiving mail with chat partner>
If a reply is received from the chat partner during the chat, the process proceeds in the order of steps 352 and 354 in FIG. 11 and step 380 in FIG. In step 380, the control unit 76 creates screen data so that the reply mail text of the other party is additionally displayed on the chat data display unit 50 of the chat screen 36. The created screen data is displayed on the display unit 80. If this received mail is not a chat end mail, the determination result in step 382 is NO, and the process returns to step 352. Whether or not the received mail is a chat end mail is determined, for example, by whether or not a specific character string indicating the chat end is inserted in the mail body.

  On the other hand, if this received mail is a chat end mail, YES is determined in step 382 and a chat end instruction from the user is awaited in step 384. After the user's termination instruction, the determination result in step 384 is YES. In step 386, the control unit 76 clears the chat screen 36 being displayed. Thereafter, the processing returns to step 200 shown in FIG.

  Consider cases other than receiving mail. Here, the user has two choices of creating and sending a reply to the chat mail and ending the chat. In either case, the determination result in step 352 is NO. In step 364, it is determined which option the user has selected.

  It is assumed that the user has selected processing for creating a reply to chat mail. The process proceeds to step 366. Thereafter, in accordance with user instructions, processing for inputting the text of the email, sending it to the chat partner, and additionally displaying the text of the sent email on the chat data display section 50 of the chat screen 36 is executed in steps 366, 368 and 370. . As a result, the sent and received mails are displayed in time series on the chat screen 36. Thereafter, the processing returns to step 352.

  On the other hand, it is assumed that the user has given an end instruction for this chat. Processing proceeds to steps 372 and 374. The control unit 76 creates a mail sentence including a specific character string indicating that the chat is to be ended, and controls the wireless control unit 74 to transmit it to the other party. Further, the control unit 76 clears the chat screen 36 in step 376 and displays the standby screen 30 on the display unit 80 in step 200 shown in FIG. Thus, the mobile phone 60 ends the chat mail function.

<Receiving mail from someone other than the chat partner>
Assume that an incoming mail is received from someone other than the chat partner during the chat. At this time, the determination result in step 352 shown in FIG. 11 is YES, the determination result in step 354 is NO, and the processing from step 356 onward is executed. That is, if the mail is a chat request, the processing from step 358 onward is executed. If the mail is not a chat request, mail data is stored as a normal mail in step 362, and the process returns to step 352 to wait for the arrival of the next mail.

  If the mail is from a registered user, the determination result in step 358 is YES, and the control unit 76 creates a message stating “Now is NG” and sends it back to the other party. Wait for an incoming call. If the e-mail is not from a registered user, the determination result in step 358 is NO, and the e-mail is stored as a normal e-mail in step 362 as in the case of an e-mail other than a chat request, and the next e-mail is received. Wait for.

  In this way, when a chat mail is executed, a chat with only one specific partner is executed. When an incoming mail is received from another person, depending on whether the mail is a chat request and whether the other party is a registered user, the appropriate processing is automatically performed on the mail. Continue chat mail.

《Send chat request》
Consider a case where a user makes a chat request while chat is not being executed. The process proceeds in the order of steps 200, 202, 204 shown in FIG. 5 and step 400 shown in FIG. 13, and the mail text is input by the user via the input unit 82. In the case of a chat request mail, a specific character string is inserted into the mail. In this case, the determination result of step 402 is YES. In step 404, the control unit 76 reads out the user's own photo data from the owner personal information storage unit 94 in the data storage unit 78 and attaches it to the inputted mail text. Thereafter, the control unit 76 controls the wireless control unit 74 to transmit a mail including attached data to the chat member requesting the chat.

  Processing proceeds to step 406. Assume that the respondent receives an “OK” reply within 5 minutes after sending the chat request email. Processing continues with steps 406, 408, and 410.

<After sending a chat request to a chat member>
If the destination of the chat request is a chat member, the determination results in steps 410, 412, and 430 are YES. In step 350 of FIG. 11, the control unit 76 displays the chat screen 36 on the display unit 80, and chat mail is started. The subsequent processing is the same as the processing during the chat described above.

  If this reply is “NG now”, the determination result in step 430 is NO, the process returns to step 200 shown in FIG. 5, and the standby screen 30 is displayed on the display unit 80.

<After sending a chat request to a non-chat member>
Even when the destination of the chat request is a non-chat member and a reply of “OK” is received from the partner within 5 minutes, the processing proceeds to step 412 as described above. The determination result in step 412 is NO. In step 414, the control unit 76 extracts information on the requestee from the reply mail and stores it in the contact data storage unit 92. Processing proceeds to step 430 and step 350 in FIG. Thereafter, chat mail is started.

  If this reply is “NG now”, the same processing as when a chat request is made to the chat member is executed.

  Further, it is assumed that the requestee's selection is “NG”. In this case, the mobile phone on the requestee side performs the same operation as when the user selects “NG” in response to the chat request. For this reason, the mobile phone 60 on the user side does not receive a reply from the requestee.

<If you do not receive a reply from the requestee after sending the chat request>
If no reply is received from the requestee within 5 minutes from the transmission of the chat request mail, YES is determined in step 406, and the process returns to step 200 shown in FIG. That is, the chat mail is not started and the normal state is restored.

  If mail is received from another while waiting for a reply from the requestee, the process proceeds in the order of steps 406, 408, and 410, and the determination in step 418 is performed. Here, there can be two cases, a case where the received mail is a chat request and a normal case. There are two cases where the received mail is from a registered person and other cases. Thus, there can be a total of four combinations.

  If the received mail is a chat request, the process proceeds in the order of steps 418, 420 and 422 if the sender of the received mail is a registered person. The control unit 76 controls the wireless control unit 74 to return a mail message “NG now” to the chat requester. Control then returns to step 406 and waits for a reply to the chat request originated by itself.

  If the received mail is a chat request and the sender of the received mail is not a registered person, and if the received mail is not a chat request, the process proceeds to 424. The control unit 76 controls the wireless control unit 74 to store the chat request mail in the reception history storage unit 90 and returns the control to step 406 again.

  The above is the main operation of the mobile phone 60 related to chat mail.

《Normal mail list instruction》
When the user gives a normal mail list instruction and performs normal mail transmission from there, the mobile phone 60 operates as follows. In this case, the process proceeds in the order of steps 202, 204, 206 shown in FIG. 5 and step 450 shown in FIG. The control unit 76 reads the data of the normally received mail from the reception history storage unit 90 shown in FIG. 4 (A) and displays it on the display unit 80 in the form of a list as shown in FIG. 4 (A). In this state, the cellular phone 60 waits for selection of received mail by the user.

  If the user selects one of the displayed received mails, the determination result in step 452 is YES. In step 454, the control unit 76 causes the display unit 80 to display the contents of the received mail selected by the user. Here, it is assumed that the user gives a mail transmission instruction to reply to the received mail. The determination at step 456 is YES. In step 458, the mail text by the user is input from the input unit 82. In step 460, according to the user's instruction, the control unit 76 executes mail transmission. The process returns to step 200 in FIG. 5, and the standby screen 30 is displayed.

  If the user selects a specific received mail and issues an end instruction without performing mail transmission, the determination result in step 456 is NO, the determination result in step 462 is YES, and the process returns to step 200. The same applies when there is no user instruction and 5 minutes have passed.

  As described above, in the chat mail function of the mobile phone 60 according to the present embodiment, when there is a chat request from a partner who is not a chat member, the photo data attached to the chat request mail is displayed. . The user can select whether to chat or reject while viewing this photo data. By inadvertently replying to an unknown party, the risk of leaking your information is reduced, and you can avoid suffering a disadvantage. On the other hand, unlike the conventional technique, even if the user is not a chat member, the user can start chatting with the other party as soon as the user grants a chat permission with the other party. In addition, when the chat is not started immediately, but when it is agreed to be performed later, if “Now is NG” is selected on the selection screen 32 shown in FIG. It is possible to register, and when the chat is performed later, the chat can be started without extra work. With such a function, unlike the conventional technique, it is possible to reduce the burden on the user regarding whether or not to chat and to increase the degree of freedom.

  The embodiment disclosed herein is merely an example, and the present invention is not limited to the above-described embodiment. The scope of the present invention is indicated by each claim in the claims after taking into account the description of the detailed description of the invention, and all modifications within the meaning and scope equivalent to the wording described therein are intended. Including.

It is a figure which shows the external appearance of the mobile telephone 60 which concerns on the 1st Embodiment of this invention. It is a figure which shows the display screen at the time of the chat mail by the mobile phone. 1 is a schematic block diagram of a mobile phone 60 according to a first embodiment. It is a figure which shows the structure of the data storage part 78 shown in FIG. It is a flowchart which shows the control structure of the chat permission refusal main control program performed by the control part 76 shown in FIG. It is a flowchart of the process performed when it determines with YES in step 202 of FIG. It is a flowchart of the process performed after step 224 of FIG. It is a flowchart of the process performed after step 228 of FIG. It is a flowchart of the process performed when it determines with YES in step 270 of FIG. It is a flowchart of the process performed when it determines with YES in step 276 of FIG. FIG. 10 is a flowchart of processing executed when YES is determined in step 240 of FIG. 7 and after step 302 of FIG. 9. It is a flowchart of the process performed when it determines with YES in step 354 of FIG. It is a flowchart of the process performed when it determines with YES in step 204 of FIG. It is a flowchart of the process performed when it determines with YES in step 206 of FIG.

Explanation of symbols

70 wireless device 72 wireless communication unit 74 wireless control unit 76 control unit 78 data storage unit 80 display unit 82 input unit

Claims (5)

Communication means for sending and receiving messages to and from other communication terminals;
Chat execution means for executing chat for exchanging messages while displaying transmitted and received messages in time series with other specific communication terminals;
Address information storage means for storing address information of other communication terminals together with permission information regarding whether to permit the chat with the communication terminal of the address;
First determination means for determining whether or not chat request determination data in a predetermined data format is attached to the received message received by the communication means;
Referring to the address information and the permission information, a second determination means for determining whether or not the sender of the received message is permitted to the chat;
When it is determined by the determination by the first determination means and the determination by the second determination means that the received message is a chat request from a sender who is not allowed to chat, the chat Output of request determination data and display of a selection screen as to whether or not to perform the chat with the sender, and according to the user's selection for the selection screen, the sender by the chat execution means And a control means for controlling the start of the chat during the communication.   In response to the user selecting to chat with the sender on the selection screen, the address information storage means stores address information of the sender's communication terminal, and the sender. The communication terminal according to claim 1, further comprising means for storing the permission information indicating that the chat is permitted.   The communication terminal according to claim 2, wherein the permission information indicating that the chat with the sender is permitted is the chat request determination data attached to the received message. Communication means for sending and receiving messages to and from other communication terminals;
Chat execution means for executing chat for exchanging messages while displaying transmitted and received messages in chronological order with other specific communication terminals;
Address information storage means for storing address information of other communication terminals together with permission information regarding whether to permit the chat with the communication terminal of the address;
A communication terminal control method for controlling the start of the chat in a communication terminal, including the communication means, the chat execution means, and a control means for controlling the address information storage means,
The control means is
A first determination step of determining whether or not chat request determination data in a predetermined data format is attached to the received message received by the communication means;
A second determination step of referring to the address information and the permission information and determining whether or not the sender of the received message is permitted to perform the chat;
The chat request when the received message is determined to be a chat request from a sender who is not allowed to chat according to the determination in the first determination step and the determination in the second determination step. Output of data for determination and display of a selection screen as to whether or not to chat with the sender, and according to the user's selection on the selection screen, the chat execution means and the sender And controlling the start of the chat in between. Communication means for sending and receiving messages to and from other communication terminals;
Chat execution means for executing chat for exchanging messages while displaying transmitted and received messages in time series with other specific communication terminals;
Address information storage means for storing address information of other communication terminals together with permission information indicating whether or not to permit the chat with the communication terminal of the address;
In order to control the start of the chat by being executed by the computer in a communication terminal including the communication means, the chat execution means, and a computer provided to be able to control the address information storage means Computer program,
The computer,
First determination means for determining whether or not chat request determination data in a predetermined data format is attached to the received message received by the communication means;
Referring to the address information and the permission information, a second determination means for determining whether or not the sender of the received message is permitted to the chat;
When it is determined by the determination by the first determination means and the determination by the second determination means that the received message is a chat request from a sender who is not allowed to chat, the chat Output of request determination data and display of a selection screen as to whether or not to perform the chat with the sender, and according to the user's selection for the selection screen, the sender by the chat execution means A computer program that functions as a control unit for controlling the start of the chat during a session.

Images