JP2009258851A - Communication device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display a mail body corresponding to a mail by identifying the mail from a specific opposite party registered as a target of a privacy function and inputting password information registered by a user. <P>SOLUTION: A cellphone 10 has a mail processing control part 30, a specific character string detection processing part 31, and a password detection processing part 32. The mail processing control part 30 stores information about a specific character string specifying the mail that is a target of privacy setting, and the password information. The specific character detection processing part 31 detects the specific character string in the mail body. The mail processing control part 30 adds flag information showing that the mail is the target of the privacy setting to a mail list corresponding to the mail detected with the specific character string, and stores it. The mail processing control part 30 requests the input of the password information when displaying the mail body added with the flag information, and displays the mail added with the flag information on a display part 23 when the password detection processing part 32 detects accordance of the input password information. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a function for concealing incoming email histories and mail text in a communication device, and in particular, when a user of the communication device enables a privacy setting that is an email concealment function, Communication that distinguishes incoming and outgoing emails that are subject to privacy settings by setting a column, and when displaying the email, the third party displays the email text through verification using secret information that is unknown to it It relates to the device.

  With the development of information processing technology and communication technology in recent years, various portable information communication terminal devices (hereinafter referred to as mobile terminal devices) have become widespread. With such a portable terminal device, a user can connect to an information distribution server that provides various services via a network such as the Internet or a desired website from the outside, receive the service, or acquire information, It is possible to obtain information necessary for business by connecting to the company's network.

  Recently, the hardware and software functions of communication devices (for example, mobile phones) have been enhanced, and the functions of conventional mobile terminal devices have been enhanced, and there is a remarkable increase in the penetration rate of mobile phones. The number of operators providing data communication services using mobile phones is increasing, and various services such as banking, internet sales, navigation, vending machines, payment for transportation and convenience stores, etc. using mobile phones. It has become possible to receive. In particular, mobile phones can be equipped with various options and applications, and the types of services that can be used are increasing.

  In addition, a mobile phone called the third generation is equipped with a GPS receiver, can measure the current position (latitude / longitude) where the mobile phone itself is located, and a navigation system using the mobile phone as a terminal device is also available. It has been put into practical use. Various systems that can be used for confirming the position of elderly people, children, etc., and confirming the position at the time of reporting in cases such as crimes and fires, accidents using such a positioning system have been studied.

  In addition, users install various applications developed for mobile phones such as browsers, applications, and game software provided by service providers on their own mobile phones and add desired services and functions. Can be customized to do.

  The main function of a mobile phone is a call function, but many users use electronic mail (hereinafter simply referred to as mail) using the Internet as means for changing to a call. This is because the data communication charge using the Internet is lower than the call charge, and the flat rate charge has been established. In the case of e-mail, there is no need for a line connection between the sender and the receiver. This is because it is possible to perform mail transmission / reception operations when both parties are arbitrarily convenient.

In a general mobile phone, a mail transmission / reception function is designated, and an incoming received mail can be displayed on the display unit to read the contents. Further, when sending mail, the mail creation function is selected to display a mail creation screen, and after inputting a mail destination and text, a mail can be sent to a desired destination by performing a transmission operation. In addition, sent / received mails are listed as incoming histories and outgoing histories, and the user can always display desired mail text by referring to these histories.
The sent mail and received mail are automatically saved in the mail storage unit within the storage capacity unless the deletion process is performed, and the sent mail list and received mail list are also saved in the mail storage unit. The user can also select an arbitrary mail from the mail list and display the mail text on the display unit.

  In communication by mail, a mail body is created using a reply function for mail received by the user, and the reply mail is often transmitted to the other party. When the mail reply function is designated while the normal received mail is displayed on the display unit, the screen is switched to a reply mail creation screen, and the user inputs the mail text on the reply mail creation screen.

  After creating the message body on the reply mail creation screen, if you perform a send operation, the sender's address and name of the received mail will be automatically set to the recipient address and recipient name, and the reply email will be sent to the other party be able to.

  By the way, when a mobile phone is stolen, misplaced, or lost, there is a risk of unauthorized use of the mobile phone by a third party or misuse of personal information accumulated in the mobile phone. For this reason, the mobile phone is provided with a function for locking operation input, and can be operated only after the password set by the user is input to unlock the operation input.

  In addition, privacy can be set as a function to conceal personal information. When privacy setting is enabled (on), the mail function is locked, and the reference of personal information entered and stored in the mobile phone is also locked. Is done. When using the mail function or referring to personal information, the user inputs a password or the like to cancel the privacy setting.

  A mobile phone having a privacy setting function is disclosed in, for example, Patent Document 1 (Japanese Patent Laid-Open No. 2005-115492) and Patent Document 2 (Japanese Patent Laid-Open No. 2006-40137).

  In the invention of the mobile phone disclosed in Patent Document 1, security is set for each folder, and the folder for which security is set is made invisible and protected for privacy. There are multiple receiving folders, and the security code is saved in the storage unit, and the menu key is operated to display the `` Security setting / release '' screen on the display unit. , Use the scroll key to select a receiving folder and display the “Received folder list for security setting / release”.

  The receiving folder number is marked, and in the normal "Receiving folder list", this security processed receiving folder number is hidden, and when canceling security processing, display the "Security setting / release" screen, It is configured to input a personal identification number and select a reception folder. In the “security setting / cancellation reception folder list”, the security-received reception folder number is displayed with a mark.

  In addition, the invention of the mobile phone disclosed in Patent Document 2 includes means for receiving mail information, means for comparing sender information included in the received mail information with preset information, and mail information. Means for generating an encryption key when the sender's information included in the message matches the preset information, and when there is a request to display the received mail, it is received based on the generated encryption key. If the sender of the mail is a specific person set in advance by means of encrypting the received mail and means for displaying the encrypted mail, the content of the sent mail is encrypted on the receiving side It is comprised so that it may do.

  In Patent Document 3 (Japanese Patent Laid-Open No. 2001-249860), a specific character string is detected on the mail receiving side, the priority of the mail is identified, and the mail priority is displayed. An invention of a communication terminal device is disclosed.

In the communication terminal device disclosed in Patent Document 3, the lexical analysis processing unit acquires character information from an electronic mail sent from the mail reception control unit, and the mail processing operation control unit stores a keyword to be searched. The lexical analysis processing unit notifies the lexical analysis processing unit of the subscript indicating the position, and the lexical analysis processing unit searches the acquired character information to determine whether or not the keyword to be searched is included. The mail processing operation control unit is configured to notify the result, and when the keyword is included in the character information, the mail processing operation control unit displays a notification operation corresponding to the keyword, for example, the priority of the mail. It is. With such a configuration, it is possible to perform mail processing by determining the priority on the mail receiving side without specifying the mail priority on the mail transmitting side.
JP 2005-115492 A JP 2006-40137 A JP 2001-249860 A

  In general, the privacy function settings related to e-mail are registered for the e-mail address of a specific partner, and when an e-mail is received from the registered e-mail address, the incoming call notification is not performed and the user does not cancel the privacy setting. Are not displayed in the incoming mail list. Further, the mail text stored in the received mail storage unit is not displayed.

  According to Patent Document 1 and Patent Document 2 described above, by using a personal identification number, or by using encryption and decryption processing, the mail text is not referred to by a third party for each received mail list or mail received folder. However, since the email targeted for privacy setting is set for a specific email address, it cannot be targeted for privacy setting depending on the content of the email text. For example, it is not possible to set privacy for a mail content category that is concealed from a third party, such as “confidential” or “business negotiation” in the mail body including the mail title.

  According to the communication terminal device disclosed in Patent Document 3, it is possible to determine the priority of the mail based on the character string in the mail text, but it is not considered in regard to the privacy setting and solves the above problem. Therefore, there was a problem that it could not be used. Even if a specific character string in the mail text is set to identify the mail subject to privacy by applying the technology of Patent Document 3, the privacy setting is applied each time the user tries to refer to the corresponding mail text. There was a problem that it had to be canceled and it took time.

  The inventor of the present application has conducted various studies to solve the above problems, and as a result of detecting the specific character string when the privacy setting is enabled, it is possible to send an e-mail from the specific partner registered as the target of the privacy function. The present invention has been completed by conceiving that the above problem can be solved by displaying the corresponding mail text by inputting the password information registered by the user. is there.

  In other words, the present invention aims to solve the above-mentioned problems, and when a privacy setting is enabled, by detecting a specific character string, mail from a specific partner registered as a target of the privacy function can be obtained. It is an object of the present invention to provide a mobile phone capable of displaying a corresponding mail text by identifying and inputting password information registered by a user.

  In order to solve the above-mentioned problem, the invention according to claim 1 of the present application sets a specific character string, enables privacy setting, and privacy setting function for concealing the display of the mail text in which the specific character string is detected The communication device includes a mail processing control unit, a specific character string detection processing unit, and a password detection processing unit, and the mail processing control unit is a mail subject to privacy setting. Information of a specific character string for specifying the password and password information, and the specific character detection processing unit detects the specific character string in the mail body of either or both of the transmitted mail and the received mail, The mail processing control unit adds and stores flag information indicating that it is a privacy setting target in a mail list corresponding to a mail in which the specific character string is detected, and When displaying the mail text with the lag information added, the mail processing control unit requests input of the personal identification information, and the personal identification detection processing unit stores the input personal identification information and the mail processing control unit. The mail display control unit displays the mail with the flag information added thereto on the display unit when the password information is compared with the password information and a match of the password information is detected.

  The invention according to claim 2 of the present application is the communication apparatus according to claim 1, wherein when the mail list display is requested, the mail display control unit extracts the mail with the flag information added from the mail list. The mail processing control unit requests input of the personal identification information, the personal identification detection processing unit compares the input personal identification information with the personal identification information stored in the mail processing control unit, When a match of the password information is detected, the mail display control unit displays a mail list including the mail with the flag information added on the display unit.

  The invention according to claim 3 of the present application is the communication device according to claim 1, wherein when the mail list display is requested, the mail display control unit displays a mail list including the mail to which the flag information is added. When the display of the mail text is requested by selecting the mail with the flag information added from the mail list, the mail processing control unit requests the input of the password information, and the password detection processing unit The inputted password information is compared with the password information stored in the mail processing control section, and when the match of the password information is detected, the selected mail is displayed on the display section. Item 4. The communication device according to Item 1.

  In the invention according to claim 1, the communication device includes a mail processing control unit, a specific character string detection processing unit, and a password detection processing unit, and the mail processing control unit is a mail subject to privacy setting. Information of a specific character string for specifying the password and password information, and the specific character detection processing unit detects the specific character string in the mail body of either or both of the transmitted mail and the received mail, The mail processing control unit adds and stores flag information indicating that privacy is set in the mail list corresponding to the mail in which the specific character string is detected, and the mail body with the flag information added When the message is displayed, the mail processing control unit requests input of the personal identification information, and the personal identification detection processing unit stores the input personal identification information and the mail processing control unit. Comparing the witness information, when detecting coincidence of password information, the mail display control unit displays the mail the flag information is added to the display unit.

  According to such a configuration, it is possible to identify the mail from the specific partner registered as the target of the privacy function and display the corresponding mail text by inputting the password information registered by the user. Also, it is possible to eliminate the trouble of releasing the privacy setting when referring to this mail.

  In the invention according to claim 2, in the communication device according to claim 1, when the mail list display is requested, the mail display control unit removes the mail with the flag information added from the mail list and displays it. The mail processing control unit requests the input of the personal identification information, and the personal identification detection processing unit compares the input personal identification information with the personal identification information stored in the mail processing control unit, and the personal identification information matches. When the mail is detected, the mail display control unit displays a mail list including the mail with the flag information added on the display unit.

  According to such a configuration, when an email targeted for privacy setting is displayed in the email list, the privacy setting target email is displayed in addition to the email list after matching the password information. The existence of the corresponding mail can be kept secret from the three parties.

  In the invention according to claim 3, in the communication device according to claim 1, when a mail list display is requested, the mail display control unit displays a mail list including the mail with the flag information added thereto, When the display of the mail text is requested by selecting the mail with the flag information added from the mail list, the mail processing control unit requests the input of the password information, and the password detection processing unit When the personal identification information is compared with the personal identification information stored in the mail processing control unit, and the coincidence of the personal identification information is detected, the selected mail is displayed on the display unit.

  According to such a configuration, it is possible to identify the mail from the specific partner registered as the target of the privacy function and display the corresponding mail text by inputting the password information registered by the user. Also, it is possible to eliminate the trouble of releasing the privacy setting when referring to this mail.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. However, the embodiments shown below exemplify a communication device for embodying the technical idea of the present invention, and are not intended to identify the present invention as the communication device. The present invention is equally applicable to communication devices of other embodiments included in the scope.

  FIG. 1 is a block diagram showing a configuration of a communication device (for example, a mobile phone) 10 according to an embodiment of the present invention, and FIG. 2 is an external view showing an appearance of the mobile phone 10 of FIG.

  The mobile phone 10 includes a call unit 11 and a function control unit 21 according to the present invention. The calling unit 11 includes a microphone 12, a speaker 13, and a wireless unit 14. The radio unit 14 includes an antenna, a transmission / reception circuit, a modulation / demodulation circuit, a compression / decompression circuit, a voice codec, and the like, and transmits voice input from the microphone 12 via the radio unit 14 as a voice signal, The audio signal is received and output to the speaker 13.

  The function control unit 21 includes a main control unit 22, a display unit 23, an operation unit 24, an incoming mail storage unit 25, an outgoing mail storage unit 26, an email list storage unit 27, an email display control unit 28, a display memory 29, and an email processing control. Part 30, a specific character string detection part 31, a password detection processing part 32, and the like. The main control unit 22 includes a microcomputer, a RAM, a ROM, and the like and functions as a computer device, and controls the above-described units of the radio unit 14 and the function control unit 21.

  FIG. 2 is a diagram showing an appearance of the mobile phone 10 shown in FIG. The cellular phone 10 includes a display unit 23 and an operation unit 24 configured by a liquid crystal display unit or the like. The operation unit 24 is provided with a call key 241, a function selection key 243, and a plurality of numeric keys 245. A mode key without a number, a cursor key for operating a specific display image on the screen displayed on the display unit 23, and the like are provided.

  The display unit 23 and the operation unit 24 are used for operations and displays for data communication via the Internet network in addition to displays and operations for calls on the mobile phone 10. The operation unit 24 is used for inputting a desired character string in order to input a telephone number during a call and to use various data communication services via an Internet network such as an electronic mail. For example, when the mail receiving function is activated, the operation unit 24 receives mail received by the mobile phone 10 and the display unit 23 is used to display the received mail. In addition, when an incoming mail is received on the standby screen, an incoming mail notification is performed.

  The operation unit 24 is provided with a call key 241, a function selection key 243, and a numeric keypad 245. When a call is performed, a telephone number can be input by operating the numeric keypad 245 and a call can be made by operating the call key 241. Alphanumeric, katakana and hiragana characters are assigned to the numeric keypad 245, and character code conversion is performed by an alphanumeric kana conversion control unit (not shown). The character code conversion is converted into an input character code corresponding to the operated key depending on whether the input mode is alphanumeric / kana mode or kana-kanji conversion mode. The function selection key 243 is a key for enabling a predetermined function of the mobile phone 10, and the function assigned to this key differs depending on the manufacturer and model.

The mail processing control unit 30 processes outgoing mail and incoming mail. The received mail storage unit 25 stores (saves) mail received by the mobile phone 10, and the sent mail storage unit 26 stores (saves) mail transmitted from the mobile phone 10. The mail list storage unit 27 stores received mail list data and outgoing mail list data. The mail display control unit 28 controls the display unit 23 to display individual mails stored in the received mail storage unit 25 and the transmitted mail storage unit 26 and a received mail list and a transmitted mail list stored in the mail list storage unit 27. 3 and 4 are diagrams showing the data structure of the received mail list and the transmitted mail list stored in the mail list storage unit 27. As shown in FIG. 3, a mail ID is added to the received mail list in order from the new mail, and the sender / address (mail address), the mail title, the received date and time are stored, and whether the mail is subject to privacy setting. Flag information indicating whether or not is stored. In the flag information, it is assumed that “1” is an email subject to privacy setting and “0” is an email not subject to privacy setting. In the following description, setting the flag “ON” indicates that the flag information is “1”, and setting the flag “OFF” indicates that the flag information is “0”.

  When the user of the mobile phone 10 sets email privacy using the operation unit 24, the privacy function is enabled (turned on) by the function selection key 243. Then, the other party of the mail to be subject to the privacy setting process is set. This setting generally sets the mail address address of the other party, but in the present invention, a specific character string in the mail text, for example, a name, nickname, or a specific keyword determined with the other party You can also set a string. These settings are stored in the mail processing control unit 30 together with the password information used when referring to the privacy setting target mail.

  The body of the email contains the title of the email. The specific character string is, for example, a character string representing the content of the document that is concealed to a third party, such as “confidential”, “business negotiations”, a pictograph of the heart, It includes the character strings and symbols etc. decided in. The user of the mobile phone 10 registers the specific character string as described above regarding the email to be set as a privacy setting target. The registered specific character string data is stored in the mail processing control unit 30. Also, the password information for referring to the mail to be set for privacy setting is registered. The registered password information is also stored in the mail processing control unit 30 in the same manner as the specific character string.

  When the mobile phone 10 receives a mail, the specific character string detection unit 32 detects whether or not the specific character string stored in the mail processing control unit 30 is included from the transmission source address and the mail text of the received mail. When a specific character string is detected, it can be seen that the received mail is a mail subject to privacy setting. The technique disclosed in Patent Document 3 can be applied to the detection of the specific character string.

  When it is determined that the received mail is a privacy setting target mail, the mail processing control unit 30 stores the mail in the received mail storage unit 25 and stores it in the received mail list of the mail list storage unit 27. The flag information indicating that the corresponding mail is a privacy target mail is added and stored (see FIG. 3). Based on this, the mail display control unit 28 performs control to prohibit the display of the mail with the flag information added when the privacy setting is valid when displaying the mail or the mail list on the display unit 23. . The flag information is added in the same manner to the outgoing mail for the other party whose privacy is to be set, and the display of the outgoing mail and its list is restricted.

  On the other hand, when the user of the mobile phone 10 refers to the privacy setting target mail, the registered personal identification information is input. The password detection processing unit 32 compares the input password information with the registered password information stored in the mail processing control unit 30, and if the password information matches, the mail display control unit 28 displays the mail list storage unit 27. When the received mail list stored in the list is displayed as a list, the target mail for privacy setting to which flag information “1” is added is added and displayed on the display unit 23.

  When the user selects a mail to be referred to from the received mail list displayed on the mail display unit 23, the mail display control unit 28 reads the selected mail from the received mail storage unit 25 and displays it on the display unit 23. At this time, even if the selected mail is a mail with flag information added, it can be displayed because the collation of the password information has been completed. The same applies to outgoing mail.

  FIG. 6 is a flowchart showing an example of a procedure for informing an incoming mail in the mobile phone 10 according to the embodiment of the present invention described above.

  When the mobile phone 10 receives the mail in the process of step S101, the specific character string detection unit 32 analyzes the character string of the mail body (including the mail title) of the received mail in the process of step S102, and sends it to the mail processing control unit 30. It is detected whether or not the stored specific character string is included. When the specific character string is detected in the determination process in step S102, it is understood that the received mail is a mail for which privacy setting is to be made.

  If the received mail is a privacy setting target mail, the mail processing control unit 30 stores the received mail in the received mail storage unit 25 and stores the received mail information in the received mail list of the mail list storage unit 27 ( (See FIG. 3). At that time, a process of adding and storing flag information indicating that it is a privacy setting target is performed.

  On the other hand, when the received mail does not include the specific character string, the mail processing control unit 30 stores the received mail in the received mail storage unit 25 and stores the received mail information in the received mail list of the mail list storage unit 27 ( (See FIG. 3). At this time, no flag information indicating that it is a privacy setting target is added.

  Next, in step S105, the mail display control unit 28 determines whether there is a mail list display request. If there is no mail list request, the process returns to the process of step S101. If there is a mail list display request, the mail process control unit 30 requests input of password information in the process of step S106. In step S107, it is determined whether or not the password information is input. If the password information is not input, the process proceeds to step S112, and the mail display control unit 28 sets the normal mail list (the privacy setting target). A list of mails without the flag information) is displayed on the display unit 23.

  When the input of the password information is determined in the determination process in step S107, the password detection processing unit 30 compares the password information stored in the mail processing control unit 30 in the process of step S108 with the input password information, thereby determining the password information. It is determined whether or not they match. If the password information does not match, the mail processing control unit 30 proceeds to the process of step S113, displays an error, and ends the process.

  If it is determined in the determination process in step S108 that the password information is the same, the process proceeds to step S110, where the mail display control unit 28 displays the mail list list of all mails (all mails including mails having flag information for privacy setting). The list is displayed on the display unit 23, and the process proceeds to step S111. In step S111, the mail display control unit 28 displays the text of the mail selected by cursor selection from the mail list displayed on the display unit 23 on the display unit 23, and ends the process.

  If the mobile phone 10 has such a configuration, when displaying the mail targeted for the privacy setting in the mail list, the mail that is the object of the privacy setting is added to the mail list after checking the match of the password information. Therefore, it is possible to conceal the presence of the corresponding mail from a third party.

  The flowchart shown in FIG. 5 shows the mail processing procedure when displaying the mail list that does not include the target mail for privacy setting when displaying the mail list. The mobile phone 10 can also be configured to display a list, and when the privacy setting target mail is selected from the mail list, and when the mail text display request is requested, the password information is checked.

FIG. 6 is a flowchart showing a mail display procedure on the mobile phone when the mobile phone 10 has such a configuration. The processes from step S201 to step S203 and step S204 in FIG. 6 are the same as the processes from step S101 to steps S103 and S104 in FIG.

  In FIG. 6, in step S205, the mail display control unit 28 determines whether there is a mail list display request. If there is no mail list request, the process returns to step S201. If there is a mail list display request, the mail display control unit 28 displays all mail list lists on the display unit 23. When the mail text to be displayed is selected from the displayed mail list by cursor selection, the process proceeds to step S206, and the mail processing control unit 30 determines whether or not flag information is added to the selected mail. .

  If flag information is not added to the selected mail, the process proceeds to step S210, and the mail display control unit 28 displays the text of the selected mail on the display unit 23 and ends the process.

  If it is determined that flag information is added to the selected mail, the mail processing control unit 30 requests input of personal identification information in the process of step S207, proceeds to the process of step S208, and the personal identification detection processing unit 32 performs step S208. In this process, the password information stored in the mail processing control unit 30 is compared with the input password information to determine whether the password information matches. If the password information does not match, the mail processing control unit 30 proceeds to the process of step S211, displays an error, and ends the process.

  If it is determined in the determination process of step S208 that the password information is the same, the process proceeds to step S209, and the mail display control unit 28 displays the text of the selected mail on the display unit 23 and ends the process.

  As described above in detail, according to the communication device according to the present invention, the mail is identified from the specific partner registered as the target of the privacy function, and the corresponding mail text is obtained by inputting the password information registered by the user. It can be displayed.

It is a block diagram which shows the structure of the communication apparatus which has the group processing function of the transmission / reception mail concerning the Example of this invention. It is a figure which shows the external appearance of the communication apparatus of FIG. It is a figure which shows the data structure of the list of the received mail memorize | stored in the received mail memory | storage part. It is a figure which shows the data structure of the list of the transmission mail memorize | stored in the transmission mail memory | storage part. It is a flowchart which shows an example of the display procedure of the mail in the communication apparatus concerning the Example of this invention. It is a flowchart which shows the other example of the display procedure of the mail in the communication apparatus concerning the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Mobile phone 11 ... Call part 12 ... Microphone 13 ... Speaker 14 ... Wireless part 21 ... Function control part 22 ... Main control part 23 ... Display part 24 ..Operation unit 25... Received mail storage unit 26... Sent mail storage unit 27... Group setting unit 28 .. mail display control unit 30 .. mail processing control unit 31. Detection processing unit 32... PIN detection processing unit

Claims (3)

A communication device having a privacy setting function for setting a specific character string to enable privacy setting and concealing the display of the mail text in which the specific character string is detected,
The communication device includes a mail processing control unit, a specific character string detection processing unit, and a password detection processing unit,
The mail processing control unit stores information on a specific character string that identifies a mail that is a target of privacy setting, and password information, and the specific character detection processing unit stores either or both of a transmitted mail and a received mail. The specific character string is detected in one of the mail texts, and the mail processing control unit adds flag information indicating that it is a privacy setting target to the mail list corresponding to the mail in which the specific character string is detected. And save
When displaying the mail text with the flag information added, the mail processing control unit requests input of the password information, and the password detection processing unit stores the input password information and the mail processing control unit. The mail display control unit displays the mail with the flag information added thereto on the display unit when the password information is compared and the match of the password information is detected.   When the mail list display is requested, the mail display control unit displays the mail with the flag information added to the mail list, and the mail processing control unit requests the input of the personal identification information. When the password detection processing unit compares the input password information with the password information stored in the mail processing control unit and detects a match of the password information, the mail display control unit adds the flag information. The communication apparatus according to claim 1, wherein a mail list including the received mail is displayed on a display unit.   When a mail list display is requested, the mail display control unit displays a mail list including the mail with the flag information added, selects a mail with the flag information from the mail list, and selects a mail text. When the display is requested, the mail processing control unit requests input of the personal identification information, and the personal identification detection processing unit displays the input personal identification information and the personal identification information stored in the mail processing control unit. The communication apparatus according to claim 1, wherein the selected mail is displayed on a display unit when the comparison and the coincidence of the password information are detected.

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