JP4339272B2 - Chat device, chat server, chat method and program - Google Patents

Description

  The present invention relates to a chat device, a chat server, a chat method, and a program, and more particularly, to a chat device, a chat server, a chat method, and a program that can perform a calm conversation.

  2. Description of the Related Art Conventionally, there is a system called chat with a service that allows participants to communicate with each other in real time through personal computer communication.

  This chat is a system in which a plurality of participants can talk simultaneously, and one person's speech is monitored by all.

  As a technique related to a conventional chat system, there is a technique disclosed in Patent Document 1. This technology is a conversation device that is connected to a network and that can share a virtual space established on the network and can send and receive and display text messages with each other, and includes a predetermined reaction and a predetermined input for specifying the reaction. An input / output table in which operations and predetermined representations representing reactions are stored in association with each other, and reaction means for notifying other conversation devices in the virtual space of reactions corresponding to input operations using the conversation device And display means for displaying a representation representing a reaction transmitted from another conversation device independently of a text message.

  In Patent Document 2, a network is configured, and messages can be transmitted and received through one of a plurality of virtual communication spaces created on the network. A plurality of terminal devices displayed on the display means; a table means for storing identifiers of communication persons using the virtual communication space; and character string information corresponding to each of the identifiers. A chat system is disclosed in which a column is used as the correspondent identification information.

  Further, Patent Document 3 is a communication terminal device used by users in order to participate in a chat service, which is an electronic communication service in which a plurality of users exchange messages on a network, and inputs user's speech data. Input means, communication means for connecting to a network and receiving other user's speech data, user's speech data input by the input means, and other user's speech received by the communication means Display means for displaying the data as a plurality of utterance data, and the display means processes the utterance data so that the utterance order of at least some of the utterance data among the plurality of utterance data is clearly displayed. A communication terminal device comprising data processing means for performing is disclosed.

Further, in Patent Document 4, a user's client device that performs a virtual conversation and a message chat information processing device that processes information related to the virtual conversation performed via the client device are connected to be communicable via a network. The client chat device receives an input of a dialog start request from the outside of the client device, and transmits the dialog start request to the message chat information processing device via the network. The message chat information processing apparatus includes a dialog control means, and when the message chat information processing apparatus receives a dialog start request, the message chat information processing apparatus determines a dialog destination user by a predetermined method and a dialog destination determination. For the client device of the user of the dialog destination determined by the means A dialog requesting means for transmitting a dialog start request via a network, and the terminal side dialog control means of the client device receives a dialog start request at the client device and outputs a predetermined dialog screen as a predetermined output means. And a message chat system including controlling a chat performed via the interactive screen.
JP 2001-202315 A JP 2002-063124 A JP 2002-288102 A JP 2003-114858 A

  However, in the above prior art, if there is a difference in the speed of key input, only the conversation with the faster input is taken up, and the slower input is difficult to participate in the conversation.

It was also difficult to understand everyone's remarks, such as when they would like to hear opinions from all chat participants. Also, because it emphasizes real-time performance, it is difficult to encode transmitted text that takes extra processing time. there were.

  Accordingly, an object of the present invention is to provide a chat device, a chat server, a chat method, and a program that can easily participate in a conversation regardless of the input speed.

  It is another object of the present invention to provide a chat device, a chat server, a chat method, and a program that make it easy to encode transmitted text.

The chat device of the present invention is a chat device used in a chat system for performing a conversation by transmitting and receiving information between a plurality of chat devices.
Detecting the input first specific character string, converting it to another character string or code shorter than the first specific character string, first information including the converted character string or code, An information converter that outputs the first control information added in the case of termination of
A transmitter that transmits the first information and the first control information to a chat partner;
When the second specific character string sent from the chat partner is converted, the second information including another character string or code shorter than the second specific character string, and the end of the statement A receiving unit for receiving second control information added to
When outputting the first control information from the information converter, the input of the subsequent character string is stopped, and the second information output from the receiver is analyzed and converted into a second specific character string. And an information analysis operation unit that allows the input of a character string when the second control information indicating the end of a statement is included.

The server of the present invention receives the information sent from the chat terminal, analyzes the received information, and if the control information indicating the end of the speech is included, information sent from the chat terminal thereafter And the information analysis operation unit that receives information from other chat terminals,
A recording unit for storing a character string included in the information received by the information analysis operation unit ;
A sentence analysis device that calculates the appearance frequency of the character string included in the received information and determines a specific character string to be converted into another short character string or code based on the appearance frequency ;
The information analysis operation unit transmits a character string recorded in the recording unit to a chat terminal other than the other chat terminal, and includes a table in which the specific character string is associated with the other character string or code. The encoded information is transmitted to a chat device that performs chat .

The chat method of the present invention is a chat method of a chat system in which a conversation is performed by transmitting and receiving information between a plurality of chat devices via a server.
Receiving information sent from the chat terminal;
Analyzing the received information, and if the control information indicating the end of speech is included, then ignoring the information sent from the chat terminal and receiving information from other chat terminals;
Storing a character string included in the received information,
A chat device that calculates the appearance frequency of a character string included in the received information, determines the specific character string to be converted into a short character string or code based on the appearance frequency, and chats the encoded information Sending to
The step of transmitting the recorded character string to a chat terminal other than the other chat terminal is performed by the server .

In addition, the program of the present invention is a computer as a server of a chat system that performs conversation by transmitting and receiving information between a plurality of chat devices via a server.
Receiving information sent from the chat terminal;
Analyzing the received information, and if the control information indicating the end of speech is included, then ignoring the information sent from the chat terminal and receiving information from other chat terminals;
Storing a character string included in the received information,
A chat device that calculates the appearance frequency of a character string included in the received information, determines the specific character string to be converted into a short character string or code based on the appearance frequency, and chats the encoded information Sending to
And transmitting the recorded text chat terminal other than the other chat terminal, a program for execution.

  According to the present invention, after the partner finishes inputting, the partner does not advance the conversation without waiting for his reply, so that the user can input his / her own thoughts calmly and carefully. It becomes possible to prevent being left out of the flow.

  According to the present invention, it is possible to reduce the amount of communication when performing regular exchanges by converting a word often used in chatting using a dedicated code during encryption. .

  According to the present invention, it is possible to further reduce the communication time because it is possible to communicate frequently occurring terms and specific phrases with a low communication amount by using the common arbitrarily set encoding information in both conversations. Become.

  According to the present invention, it is possible to improve a communication speed and a communication amount by replacing words and phrases frequently appearing during chatting with codes.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to perform the chat which can speak at the timing which a participant desires.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

[First Embodiment]
[Description of configuration]
FIG. 1 is a block diagram showing a configuration of an example in which a chat device according to a first embodiment of the present invention is connected to a communication network.

  The chat device 7 according to the present embodiment includes an editor 1, an information conversion unit 2 that functions as an information output unit, a transmission unit 3, a reception unit 4, and an information analysis / operation unit 5.

  The editor 1 has an input area for displaying the input information from the information conversion unit 2 and editing the input information based on the display image, and an output area for writing a chat conversation between chat participants. Has an output function.

  The information conversion unit 2 converts the input information input from the input device such as a keyboard into the input area of the editor 1 and the character string input to the editor 1 into a format that can be used for communication together with the read control information. With functions.

  The transmission unit 3 has a function of transmitting the operation information output from the information conversion unit 2 to a chat communication partner via a network.

  The receiving unit 4 has a function of receiving information sent from the chat partner and sending it to the information analysis / operation unit 5.

  The information analysis / operation unit 5 analyzes and converts the information sent from the receiving unit 4 and converted by the chat partner's information conversion unit 2, and outputs the character string to the output area on the editor 1 for control information. Has a function of corresponding operation.

  Further, it is assumed that the input for operating the terminal is first sent to the information conversion unit 2. However, an input for operating the terminal may be sent to the editor 1 in some cases.

[Description of operation]
As preparation, the configuration in FIG. 1 needs to be in the preparation state for both parties (hereinafter referred to as participant A and participant B) in a state where they can communicate via the network.

  In the following description, an editor 1-A, an information conversion unit 2-A, a transmission unit 3-A, a reception unit 4-A, and an information analysis / operation unit 5-A are provided on the participant A side. On the B side, an editor 1-B, an information conversion unit 2-B, a transmission unit 3-B, a reception unit 4-B, and an information analysis / operation unit 5-B are provided.

  When Participant A performs an operation to start chatting with Participant B (Step S1), information conversion unit 2-A includes information including communication partner and communication content (chat start) in transmission unit 3-A. A certain start information is designated (step S2), and the transmission unit 3-A sends the start information to the participant B (step S3).

  When the reception unit 4-B of the participant B receives the start information, it sends the start information to the information analysis / operation unit 5-B (step S4).

  The information analysis / operation unit 5-B of the participant B does not accept the input from the input device of the participant B by not reflecting the input from the input device of the participant B in the input area of the editor 1-B. (Step S5). That is, when the participant A performs input, the participant B cannot perform input.

  When the setting of the flag of the participant B's editor 1-B is completed, the information converting unit 2-B designates that the participant B's editor 1-B is ready to chat to the transmitting unit 3-B that communicates. (Step S6). The transmitting unit 3-B transmits information indicating that the chat is ready to the receiving unit 4-A of the participant A (step S7).

  When the reception unit 4-A of the participant A receives information indicating that the chat is ready from the participant B side (step S8), the reception unit 4-A outputs the information to the information analysis / operation unit 5-A.

  The information analysis / operation unit 5-A that has received the B-side preparation completion transmission from the A reception unit 4-A notifies the information conversion unit 2-A to start output to the editor 1-A, and chats. Is completed (step S9).

  A character string to be transmitted and a transmission cue are input to the input area of the editor 1-A using an input device such as a keyboard (step S10). The information conversion unit 2-A reads the content of the input area of the editor 1-A (step S11), converts the content, and sends it to the transmission unit 3-A. The transmitting unit 3-A transmits the contents converted into the participant B. If the information read by the information conversion unit 2-A includes a replacement signal, the replacement signal is also transmitted to the participant B (step S12).

  The information analysis / operation unit 5-B analyzes the content received by the reception unit 4-B from the participant A, and outputs a sentence to the output area of the editor 1-B (step S13).

  On the participant A side, the transmitted sentence is sent to the information analysis / operation unit 5-A. The information analysis / operation unit 5-A outputs it to the output area of the editor 1-A (step S14).

  Even after the above operation, the other party cannot be changed until the change signal is made, and the input side can be switched by performing the change signal.

  When the substitute signal is input to the information conversion unit 2-A on the participant A side, after the operation in step S14, the information analysis / operation unit 5-A is the input area of the editor 1-A. Stop reflecting input from the input device. Further, the editor 1-A does nothing even if it receives a transmission signal (step S15).

  On the participant B side, when the reception unit 4-B receives the change signal, after the operation of step S13, the information analysis / operation unit 5-B is input to the input area of the editor 1-B by the information conversion unit 2-B. Allow to reflect input from. When the editor 1-B receives the transmission signal, the editor 1-B operates in response to the transmission signal (step S16).

As a substitute signal, the following operations (1) to (6) may be employed instead of line feed. All of these are recognized by the information conversion unit 2 as control information.
(1) Pre-set key input other than line feed. Examples are “Space key” and “Combination of system key and other key”.
(2) Click the change button preset for this system.
(3) When the information conversion unit 2 finds a specific character string set in advance when the character string is read from the editor 2 for transmission. Examples are “.” Or “more”.
(4) When the information conversion unit 2 has a clock function and a preset time has passed since the change was made.
(5) When the information conversion unit 2 has a clock function and there is no input to a preset time editor.
(6) When a predetermined input is made by an external input device. For example, voice input using a microphone or changing the subject using camera input.

[Second Embodiment]
[Description of configuration]
This is the same as in the first embodiment. However, the information conversion unit 2 has a function of encrypting information using an existing encryption technique and then transmitting the information to the transmission unit 3, and the information analysis / operation unit 5 encrypts the received information using the information conversion unit 2. A function of sending information to the editor 1 after decryption using the encryption technology.

[Description of operation]
This is the same as in the case of the first embodiment. However, the information conversion unit 2 transmits the information after encrypting the information using an encryption technique. The information analysis / operation unit 5 decrypts the received information using the encryption technique used by the information conversion unit 2 and then sends the information to the editor 1. Encryption techniques include compression techniques.

  According to the present embodiment, by providing a portion for encrypting data, information at the time of chatting is protected.

  In the first and second embodiments, the chat device 7 can be constituted by a personal computer as shown in FIG. 8 and a program operating on the computer. The personal computer has a CPU 35, a disk device 33 such as a hard disk for holding a program in which the flowcharts of the participants A or B shown in FIGS. 5 and 6 are described, a RAM for holding data for information processing, and the like. A memory 36, an input device 34 such as a keyboard, a display device 32 such as a CRT or a liquid crystal display device, a transceiver 31 and a data bus 37 are provided. The transceiver 31 corresponds to the transmission unit 3 and the reception unit 4. The display device 32 and a part of the program correspond to the editor 1. A part of the program corresponds to the information conversion unit 2 and the information analysis / operation unit 5. That is, the information conversion unit 2 and the information analysis / operation unit 5 are realized by executing a program.

[Third Embodiment]
[Description of configuration]
This is the same as in the first and second embodiments. However, the information conversion unit 2 and the information analysis / operation unit 5 communicate with each other during communication of encoded information including a word or sentence to be encoded and a correspondence table of the codes at an arbitrary timing at the start of chat or during chat. And a function of sharing encoded information with a communication partner.

[Description of operation]
At the time of encoding according to the second embodiment, information conversion is performed by setting a word arbitrarily set by the participant A or B as an encoding target in the information conversion unit 2 (2-A or 2-B). The character string can be encoded based on the encoding information shared by the communication partner with the communication partner.

  FIG. 7 is a diagram showing an example of a correspondence table between words to be encoded and their codes. For example, the codes “*”, “#”, “+”, “!” Are “I am very happy to email you”, “Thank you for your early reply”, “Thank you for your email” “,” “How are you.”

  Further, the information conversion unit 2-A or 2-B may convert the first character string into a second character string shorter than the first character string. For example, the information conversion unit 2-A or 2-B can convert a character string “YUCHIRO SAITO” into a shorter “name 1”.

[Fourth Embodiment]
[Description of configuration]
As shown in FIG. 2, a sentence analysis unit 6 is added to the configuration of FIG. The text analysis unit 6 receives the content read by the information conversion unit 2 and breaks it down into words such as parts of speech and common phrases, calculates the appearance frequency of each word, and codes used by the information conversion unit 2 and the information analysis / operation unit 5 Has a function of updating information.

[Description of operation]
The sentence analysis unit 6 analyzes the content read by the information conversion unit 2 according to a predetermined method, and calculates the appearance frequency for each decomposed word.

  While the chat is being performed, the sentence analysis unit 6 updates the appearance frequency of the word, and adds to the information conversion unit 2 a word having a length that is more than a certain frequency and can be expected to reduce the amount of information by encoding. Notify. The information conversion unit 2 shares the updated encoded information with the communication partner.

  The analysis method used by the sentence analysis unit 6 can use an existing sentence analysis technique. In addition, when a specific combination of words appears frequently, it may have a function of handling them as a connected word.

[Fifth Embodiment]
[Description of configuration]
3 and 4 are block diagrams showing the configuration of the present embodiment.

  This is a server management chat system that is not a one-to-one communication system as in the fourth embodiment.

  Chat participants interact with the server, and the chat support system is installed on the server.

  In the configuration of FIG. 3, the chat device 10 includes an editor 1 corresponding to the editor 1 shown in FIG. 1, a transmission unit 21, and a reception unit 22.

  Input from an input device such as a keyboard is directly input to the input area of the editor 1, and the transmission unit 21 has a function of transmitting only the sentence.

  The receiving unit 22 outputs the received text as it is to the output area of the editor 1.

  The information analysis / conversion unit 11 on the server performs operations corresponding to the information conversion unit 2 and the information analysis / operation unit 5. The received sentence has the function of deleting and changing the sentence of the first embodiment, and the function of adding the sentence to the log file 12. The information analysis / conversion unit 11 may include a part of a program and a storage unit. That is, the function of the information analysis / conversion unit 11 may be realized by a program.

  Further, the information analysis / conversion unit 11 can store the communication destination information of each chat participant and the information of the current communication partner, and can switch the reception partner.

  The information analysis / conversion unit 11 has a function of transmitting the contents of the log file 12 to all or a specified part, all chat participants.

  In the configuration of FIG. 4, the chat device 10 includes a code and a decoding device having the encoding function of the information conversion unit 2 and the decoding function of the information analysis / operation unit 5 described in the fourth embodiment. included.

  The sentence analysis unit 13 of the server has the same function as the sentence analysis unit 6 of FIG.

[Description of operation]
This is the same as the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment.

  However, the information analysis / conversion unit 11 serving as the information analysis / operation unit on the server performs the function of managing the change.

  The information analysis / conversion unit 11 reads the text transmitted from the chat participant who is the input number, and searches for a substitute signal or the like. In addition, sentences may be changed.

  Thereafter, a sentence is added to the log file 12, and the added sentence is transmitted to all chat participants.

  In the case of the configuration of FIG. 4, the sentence analysis unit 6 operates on the sentence read by the information analysis / conversion unit 11 as in the fourth embodiment.

  The sentence analysis device 13 associates frequently appearing words (character strings) and sentences with codes as shown in FIG. 7, and transmits this encoded information to each chat participant.

  This information is received by the code / decoding unit 23 in the chat device 10 of each terminal, is transmitted after encoding the text from the next, and is output to the editor 1 after decoding the received part.

  When the change signal of the participant A is notified to the server, the information analysis / conversion unit 11 switches the reception partner to the next partner (participant) B. As a result, the information analysis / conversion unit 11 ignores the text from the participant A, while receiving the text from the participant B and adding the text to the log file 12. Only participant B can send the text.

  ADVANTAGE OF THE INVENTION According to this invention, communication and change management become quick and reliable by using the server applicable in the network which can communicate more data amount.

[Sixth Embodiment]
[Description of configuration]
The same structural unit as any one of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, and the fifth embodiment is not a two-party communication but a plurality ( Communication with three or more).

  The information analysis / conversion unit 11 has a function of identifying a plurality of partners and communicating correctly.

  In addition, the information analysis / conversion unit 11 has a function of storing the input order of chat participants and performing switching accordingly.

[Description of operation]
Operations similar to those in the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, and the fifth embodiment are performed. However, it is necessary for all participants in communication to be ready to start the chat.

  It is in the editors 1 of all the persons other than the input person that the input person cannot accept the operation while inputting into the editor 1.

  When the current input person signals the change, input of the next participant in accordance with the input order stored in the information conversion unit 2 or the information analysis / conversion unit 11 is started among all the participants.

  According to the present invention, it is possible to perform a chat in which a plurality of people participate.

[Seventh Embodiment]
[Description of configuration]
The configuration of this embodiment is the same as that of the sixth embodiment. However, the transmission unit 3 and the reception unit 4 or the transmission unit 21 and the reception unit 22 in the chat device 10 have a function of re-accepting connection even during a chat.

[Description of operation]
The same operation as any of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment and the sixth embodiment is performed. However, when another person connects to the terminal during chatting, all the participants in communication are notified of the connection information, and a new connection can participate.

  In this case, the new participant can be required to enter a password.

  When another person connects, a new connection is added to the transmission partner of the transmission unit 3, and the encoded and encrypted information of the information conversion unit 2 is sent to the new connection destination.

  In addition, the past remarks remaining in the contents of the editor 1 are sent only to the new connection destination.

  The past utterances at this time can limit the amount of communication such as a certain size or within a certain time.

  Participation is completed by registering this participant at the end of the input order stored in the information conversion unit 2 or the information analysis / conversion unit 11.

  When the already connected person transmits the withdrawal from the chat, the connection is deleted from the transmission partner of the transmission unit 3 or the information analysis / conversion unit 11 and is also deleted from the reception source of the reception unit 4.

  If it is currently in the input state, it notifies the input change signal. The removal is completed by deleting the participant from the input order stored in the information conversion unit 2 or the information analysis / conversion unit 11.

  According to the present invention, it is possible to perform a chat that allows participation and withdrawal.

[Eighth Embodiment]
[Description of configuration]
The information analysis / conversion unit 11 has a function of switching between real time chat and catch ball type chat.

[Description of operation]
The information analysis / conversion unit 11 always accepts input from all the chat participants according to the cues of the participants. Moreover, it can change so that the input of only the original one may be accepted from the state.

  However, exclusive control is incorporated in the communication between the information analysis / conversion unit 11 and the log file 12 so that no other sentences are added while a sentence is being added to the log file 12. .

  In the above embodiment, a personal computer is used as the chat device. However, the present invention is not limited to this, and ordinary telephones, PDAs, mobile phones, and the like can also be used.

It is a block diagram which shows the structure of the example by which the personal computer as the 1st Embodiment of this invention is connected to a communication network. It is a block diagram which shows the structure of one embodiment of this invention. It is a block diagram which shows the structure of one embodiment of this invention. It is a block diagram which shows the structure of one embodiment of this invention. It is a block diagram which shows operation | movement of one embodiment of this invention. It is a block diagram which shows operation | movement of one embodiment of this invention. It is a figure which shows an example of the correspondence table of the word used as the object of an encoding, and its code | symbol. It is a block diagram which shows the personal computer as a chat apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Editor 2 Information conversion part 3 Transmission part 4 Reception part 5 Information analysis / operation part 6 Text analysis part 10 Chat apparatus 11 Information analysis / conversion part 12 Log file 21 Transmission part 22 Reception part 23 Encoding and decoding part

Claims (9)

In a chat device used in a chat system that has a conversation by transmitting and receiving information between a plurality of chat devices,
Detecting the input first specific character string, converting it to another character string or code shorter than the first specific character string, first information including the converted character string or code, An information converter that outputs the first control information added in the case of termination of
A transmitter that transmits the first information and the first control information to a chat partner;
When the second specific character string sent from the chat partner is converted, the second information including another character string or code shorter than the second specific character string, and the end of the statement A receiving unit for receiving second control information added to
When outputting the first control information from the information converter, the input of the subsequent character string is stopped, and the second information output from the receiver is analyzed and converted into a second specific character string. And an information analysis operation unit that allows the input of a character string when the second control information indicating the end of a statement is included. Encoding information including a table in which the first and second specific character strings to be encoded and the other character strings or codes are associated with each other is transmitted to and received from the other party performing the chat. The chat apparatus according to claim 1 . Calculate the appearance frequency of the input character string, determine the first and second specific character strings based on the appearance frequency, and update the encoding information used in the information conversion unit and the information analysis operation unit The chat apparatus according to claim 2 , further comprising a sentence analyzing apparatus that performs the process. The chat device according to claim 1 , wherein the transmitting unit and the receiving unit re-accept a connection of another chat device even during a chat. When the information sent from the chat terminal is received, the received information is analyzed, and control information indicating the end of the speech is included, the information sent from the chat terminal is ignored, An information analysis operation unit for receiving information from the chat terminal;
A recording unit for storing a character string included in the information received by the information analysis operation unit;
A sentence analysis device that calculates the appearance frequency of the character string included in the received information and determines a specific character string to be converted into another short character string or code based on the appearance frequency;
The information analysis operation unit transmits a character string recorded in the recording unit to a chat terminal other than the other chat terminal, and includes a table in which the specific character string is associated with the other character string or code. server for transmitting the encoded information, the chat device that performs a chat. The information analyzing operation unit stores the input order of the plurality of chat terminals, when receiving the control information indicating the end of the speech, to claim 5, characterized in that to receive the information in the input sequence The listed server. The information analysis operation unit can switch between accepting input from chat terminals of all the participants in the chat or accepting input from a single participant, and the information analysis operation unit includes the information analysis operation unit and the information analysis operation unit. connected to the log file, so that other information is not added while adding the received information, to claim 5 or 6, characterized in that the exclusive control at the time of communication with the log file is incorporated The listed server. In a chat method of a chat system in which a conversation is performed by transmitting and receiving information between a plurality of chat devices via a server,
Receiving information sent from the chat terminal;
Analyzing the received information, and if the control information indicating the end of speech is included, then ignoring the information sent from the chat terminal and receiving information from other chat terminals;
Storing a character string included in the received information;
A chat device that calculates the appearance frequency of a character string included in the received information, determines the specific character string to be converted into a short character string or code based on the appearance frequency, and chats the encoded information Sending to
And a step of transmitting the recorded character string to a chat terminal other than the other chat terminal, performed by the server. In a computer as a server of a chat system that performs conversation by transmitting and receiving information between a plurality of chat devices via a server,
Receiving information sent from the chat terminal;
Analyzing the received information, and if the control information indicating the end of speech is included, then ignoring the information sent from the chat terminal and receiving information from other chat terminals;
Storing a character string included in the received information;
The appearance frequency of the character string included in the received information is calculated, the specific character string to be converted into a short character string or code is determined based on the appearance frequency, and the encoded information is used for chat Transmitting to the device;
Transmitting the recorded character string to a chat terminal other than the other chat terminal.

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