JP2005292891A - Communication terminal device and communication control processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately analyze the contents of received mail and extract unfavorable mail to be deleted with high accuracy.
When a received mail is stored in a reception BOX of a RAM 3, a CPU 1 sequentially reads each keyword from a plurality of types of keywords stored in a keyword memory 7 and receives a character string that matches each keyword. Detects from mail, calculates match rate α between multiple types of keywords and received mail character string based on the detection result, and receives the received mail if the calculated match rate α is greater than the reference value Delete from BOX.
[Selection] Figure 1

Description

  The present invention relates to a communication terminal device and a communication control processing program thereof, and more particularly to a communication terminal device that transmits and receives mail and a communication control processing program.

  In a communication terminal device such as a mobile phone, since the security system of the mail address is weak, an inappropriate mail not desired by the user may be received. When a character string or an image is transmitted to an unspecified number of e-mail addresses, there are legal restrictions such as notification to that effect and restrictions on the number of e-mail addresses transmitted at a time. However, since it is possible to divide and send e-mails to an unspecified number of times, it is not possible to reject e-mails that the user does not want. Many of these e-mails to unspecified people have obscene content, and the user's emotions are spoken with content that includes character strings such as “adult”, “dating”, “unlimited viewing”, and “free trial”. There are things like selling images and photos for an unreasonable amount, and soliciting illegal gender dating. Mobile phones are now spreading not only to adults, but also to high school and junior high school students, and even to elementary school students. For this reason, it is not preferable that such inappropriate mail is automatically stored in the reception BOX and shown to minors.

Several proposals for rejecting such inappropriate mail have been proposed. For example, according to a proposal, communication is possible by mounting a memory card on which personal information is recorded, and in an information communication device capable of performing accounting processing for the owner of the memory card, the memory card owner's Depending on age information, processing such as deletion when inappropriate data is received can be appropriately executed. According to the configuration of this proposal, a memory card in which personal data of the owner is recorded in advance, a display unit for displaying character data, image data, etc., a list of inappropriate data transmission sources (e-mail addresses) and inappropriate A memory having a list of various data (character strings), a storage area for received mail, and the like. If there is inappropriate data in the received e-mail, the number of inappropriate data is displayed on the display unit. If there is inappropriate data, the email is deleted. However, when the automatic deletion function is off, the e-mail can be displayed. (Patent Document 1)
JP 2003-319031 A

In Patent Document 1, if there is inappropriate data in the received e-mail, the number of inappropriate data is displayed on the display unit, but when the automatic deletion function is on, The email is deleted even if it is one place. However, even if a certain character string is included in the received mail, it is inappropriate to immediately delete the mail as an inappropriate mail. For example, “Regular Adult Disease Screening Notice. Adult Diseases…”, “English Conversation XX. Free Trial Campaign Information ...”, “Hotel Sumidagawa. A good room has been secured. You can also receive e-mails such as “Today's △△ Mail News Incident Book. A woman who was dating in an encounter system ...”. It is inappropriate to delete all of these e-mails because they contain the characters "adult", "unlimited viewing", "free trial", "meeting", and "dating".
An object of the present invention is to solve the above-described conventional problems, and an object of the present invention is to accurately analyze the contents of received mail and to extract undesired mail to be deleted with high accuracy.

  The communication terminal device according to claim 1 is a mail storage unit that stores a received mail received via a predetermined communication line in a first storage unit (corresponding to the RAM 3 in FIG. 1 in the embodiment). When the received mail is stored in the first storage means, it is stored in the second storage means (corresponding to the keyword memory 7 in FIG. 1 in the embodiment). Character string detection means for sequentially reading each reference character string from a plurality of types of reference character strings (corresponding to keywords in the embodiment) and detecting a character string matching each reference character string from received mail ( (Corresponding to CPU 1 in the embodiment) and a matching rate (corresponding to α in the embodiment) of a plurality of types of reference character strings and received mail character strings based on the detection result by the character string detecting means. Calculation Calculating means (corresponding to the CPU 1 in the embodiment) and mail processing means for deleting the received mail when the matching rate calculated by the calculating means is larger than the reference value (in the embodiment, the CPU 1 Equivalent).

In the communication terminal device according to claim 1, as described in claim 2, the mail processing means asks the user to delete the received mail before deleting the received mail (in the embodiment, the deletion switch in FIG. 10). Is displayed on a predetermined display means (corresponding to the display unit 8 in FIG. 1 in the embodiment) together with the calculated matching rate, and the mail is deleted when a deletion command is input. You may make it the structure which does.
Moreover, in the communication terminal device according to claim 1, as described in claim 3, the character string detection means includes the number of characters of the character string that matches one type of reference character string and the character that matches the reference character string. The multiplication value with the number of columns is obtained as the number of detected characters, and the total number of detected characters in the received mail is obtained by accumulating the number of detected characters for each character string that matches the reference character string sequentially read from the second storage means. The calculation means may be configured to calculate the matching rate by dividing the total number of detected characters by the total number of characters in the received mail.

  According to a fourth aspect of the present invention, there is provided a communication control processing program that stores received mail received via a predetermined communication line in first storage means (corresponding to the RAM 3 in FIG. 1 in the embodiment). And when the received mail is stored in the first storage means, a plurality of types of reference characters stored in the second storage means (corresponding to the keyword memory 7 in FIG. 1 in the embodiment) A second step of sequentially reading each reference character string from a string (corresponding to a keyword in the embodiment), and detecting a character string that matches each reference character string from the received mail, and a detection result by the second step A third step of calculating a matching rate (corresponding to α in the embodiment) between a plurality of types of reference character strings and a received mail character string, and a matching rate calculated by the third step. Standard value And a fourth step of deleting the received mail if it is larger. Each step corresponds to the processing of the CPU 1 in the embodiment.

  According to the communication terminal device and the communication control processing program of the present invention, it is possible to accurately analyze the contents of the received mail and extract an undesired mail to be deleted with high accuracy.

Hereinafter, the first and second embodiments of the communication terminal device according to the present invention will be described with reference to block diagrams showing the configuration of the mobile phone in each embodiment shown in FIG. Will be described with reference to the flowchart shown in FIG. 8 and the display screens shown in FIGS.
In FIG. 1, a CPU 1 is composed of a one-chip IC with a built-in DSP (digital signal processor) for baseband signal processing. A ROM 2, RAM 3, RF block 4, switch unit 5, display driver 6, and keyword memory 7 are connected to the system bus of the CPU 1. The display driver 6 is connected to a display unit 8 including an LCD (liquid crystal display). A microphone 9, a speaker 10, and a vibrator 11 are connected to the input / output port of the CPU 1. The CPU 1 exchanges commands and data with these units and controls the cellular phone.

  The ROM 2 stores a communication control processing program including a function for transmitting and receiving calls and mails with other mobile phones and a function for controlling each unit connected to the CPU 1. The RAM 3 is a work area of the CPU 1, a buffer area for temporarily storing data processed by the CPU 1, areas of various registers and flags necessary for execution of a communication control processing program, received mail and transmitted A reception BOX and a transmission BOX for recording mail are provided. The RF block 4 includes a wireless transmission / reception unit, a wireless signal processing unit, and the like (not shown) for transmitting and receiving calls and mails with the telephone communication network.

The switch unit 5 includes an off-hook switch, an on-hook switch, a mail switch, a transmission switch, a cursor switch, a character input switch, and other switches. The function of each switch will be described later. The keyword memory 7 is composed of a rewritable and rewritable nonvolatile memory such as a flash ROM, and a character string input by operating the switch unit 5 is registered as a keyword. The display unit 8 is configured by an LCD (liquid crystal display) or the like, and can display a screen of received mail, a mail to be transmitted, a keyword registration screen, and the like.
In addition, a call notification at the time of outgoing call is made by the speaker 10, a call is made by the microphone 9 and the speaker 10, and an incoming call notification is made by the speaker 10 or the vibrator 11 at the time of incoming call.

Next, the operation of the first embodiment having the configuration shown in FIG. 1 will be described with reference to FIGS. 2 to 6 which are flowcharts of the CPU 1 and the keyword registration screen shown in FIG.
2 and 3 are flowcharts of the main routine. In FIG. 2, after a predetermined initialization (step SA1), a standby screen is displayed on the display unit 8 (step SA2). Next, it is determined whether or not the off-hook switch is turned on (step SA3). When this switch is turned on, a number input screen is displayed (step SA4), the input number is stored in the RAM 3, and a number input process for displaying on the display unit 8 is performed (step SA5). Next, a calling process is performed in response to an ON operation of the calling switch (step SA6), and a call notification is given by the speaker 10 (step SA7). Then, it is determined whether or not a line connection has been established (step SA8). When the line connection is established, the process shifts to a call process (step SA9), and a call is made with the partner user. Thereafter, it is determined whether or not the on-hook switch has been turned on (step SA10). When this switch is turned on, a call termination process such as line disconnection is performed (step SA11), and the process proceeds to step SA2 and waits again. Display the reception screen.

  If the off-hook switch is not turned on in step SA3, it is determined whether or not the mail switch is turned on in the flowchart of FIG. 3 (step SA12). When this switch is turned on, a mail list screen is displayed (step SA13). On the mail list screen, a plurality of items such as new creation, reception BOX, transmission BOX, keyword registration, and the like are displayed. Then, one item is focused (step SA14). For example, the display mode of the item is highlighted to distinguish it from other items.

  Next, it is determined whether or not the cursor switch is turned on (step SA15). When this switch is turned on, the focus position is moved (step SA16). Next, it is determined whether or not a determination switch that is one of the two icon switches displayed on the screen is turned on (step SA17). If this switch is not turned on, the other icon switch is cleared. It is determined whether or not the switch is turned on (step SA18). If this switch is not on, the process proceeds to step SA15 to determine whether the cursor switch is on. On the other hand, when the clear switch is turned on, the mail list screen is deleted, the process proceeds to step SA2 in FIG. 2, and the standby screen is displayed.

  In step SA17 in FIG. 3, when the determination switch is turned on, processing according to the focus position at that time is performed. It is determined whether or not the focus position is newly created (step SA19). If it is newly created, a new mail creation process is performed (step SA20). If it is not a new creation, it is determined whether or not the focus position is a reception BOX (step SA21). If it is a reception BOX, a reception BOX process is performed (step SA22). If it is not a reception BOX, it is determined whether or not the focus position is keyword registration (step SA23). If it is keyword registration, keyword registration processing is performed (step SA24). If the keyword is not registered, other mail processing is performed (step SA25). After any processing is performed according to the focus position, the process proceeds to step SA13 and the mail list screen is displayed again.

  If the mail switch is not on in step SA12, it is determined whether or not the other switch is turned on (step SA26). If the other switch is turned on, the other switch corresponding to the turned on switch is determined. Processing is performed (step SA27), the process proceeds to step SA2 in FIG. 2, and a standby screen is displayed (step SA28). If it is determined in step SA26 that the other switches are not on, the process proceeds to step SA3 in FIG. 2 to determine whether the off-hook switch is on.

  FIG. 4 is a flowchart of the keyword registration process in step SA24 of FIG. First, a keyword registration screen is displayed on the display unit 8 (step SB1). FIG. 8 is a diagram showing a keyword registration screen. On this screen, a plurality of character input areas for a keyword to be registered, a determination switch icon, and a clear switch icon are displayed, and a character input cursor is displayed in the character input area (step SB2). At the beginning of displaying this screen, a character input cursor is displayed at the left end of the uppermost character input area.

Next, it is determined whether or not the cursor switch is turned on (step SB3). If this switch is turned on, it is determined whether it is a vertical cursor or a left and right cursor (step SB4). If the cursor is an up / down cursor, the character input cursor is moved to another character input area (step SB5). On the other hand, when the left / right cursor switch is turned on, the character input cursor is moved within the same character input area (step SB6). After the character input cursor is moved in step SB5 or SB6, or if the cursor switch is not turned on in step SB3, it is determined whether or not a character is input by operating the switch unit 5 (step SB7).
When a character is input, the input character is displayed on the character input cursor (step SB8), and the character input cursor is moved by one character (step SB9).

Next, it is determined whether or not the decision switch is turned on (step SB10). If this switch is not turned on, it is determined whether or not the clear switch is turned on (step SB11). If this switch is not turned on, the process proceeds to step SB3 to determine whether or not the cursor switch is turned on. When the determination switch is turned on, the word of the character string input in each input area is registered as a keyword in the keyword registration area of the keyword memory 7 (step SB12).
After the registration in step SB12 or when the clear switch is turned on in step SB11, the process returns to the main routine.

  5 and 6 are flowcharts of the incoming mail detection process. In FIG. 5, when a mail is received, it is stored in the reception BOX (step SC1). Next, the register of the total number of detected characters is cleared to “0” (step SC2), and the number of characters in the mail body is counted (step SC3). Next, one keyword is taken out from the keyword registration area (step SC4). Then, the number of keywords in the mail body is detected (step SC5). That is, a character string that matches the keyword is detected. Next, the number of characters of the keyword is multiplied by the number of keywords, and the multiplication result is stored in a register for the number of detected characters (step SC6). Next, the number of detected characters is accumulated in the register of the total number of detected characters (step SC7).

For example, assume that the email body of the received email (1) is “Notice of regular adult disease screening. Please make a reservation for adult disease screening”. In this case, the number of characters in the mail body is “29”. When the keyword “adult (2)”, which is the number of characters in parentheses, is extracted from the keyword registration area, the number of keywords in the mail text is “2”. In this case, the number of detected characters is “4 (= 2 × 2).” Since there is no character string that matches another keyword, the total number of detected characters is “4”.
On the other hand, it is assumed that the mail text of another received mail (2) is “Unlimited viewing of adult-oriented images! Free trial! Expect new adult encounters and adult dating!”. In this case, the number of characters in the mail body is “29”. When keywords "adult (2)", "dating (2)", "unlimited viewing (3)", "free experience (4)", "meeting (2)" are taken out from the keyword registration area, The number of detected characters is “19 (= 2 × 4 + 3 × 1 + 4 × 1 + 2 × 1 + 2 × 1)”.

  Then, it is determined whether or not there is an unchecked keyword in the keyword registration area (step SC8). If there is an unchecked keyword, the process proceeds to step SC4, the next keyword is taken out, and step SC8 is taken. Repeat the loop process up to. If there is no keyword not checked in step SC8, the value of the total number of detected characters is divided by the value of the number of characters in the mail, and the divided value is stored in the register as the coincidence rate α (step SC9).

Next, in the flowchart of FIG. 6, it is determined whether or not the value of α is equal to or less than a reference value (step SC10). In this case, the reference value is “0.33”. That is, a case where the matching rate α of the mail text is larger than 1/3 is regarded as an undesirable mail. For example, in the above example, α of the received mail (1) is 4/29 = about 0.14, and α of the received mail (2) is 19/29 = about 0.66. If the value of α is equal to or less than the reference value, the incoming mail notification is performed by the speaker 10 or the vibrator 11 (step SC11), and it is determined whether or not a certain time has passed (step SC12). When the fixed time has elapsed, the incoming call notification is stopped (step SC13), and the process returns to the main routine. On the other hand, if the value of α is larger than the reference value, the mail is deleted from the received BOX (step SC14), and the process returns to the main routine.
Therefore, in the above example, the received mail (1) is stored in the received BOX as it is because the value of α is about 0.14 (<0.33), but the received mail (2) has the value of α. Since it is about 0.66 (> 0.33), it is deleted from the reception BOX.

  FIG. 7 is a flowchart of incoming call detection processing. When the incoming call is detected, the incoming call is notified by the speaker 10 or the vibrator 11 (step SD1), and it is determined whether or not the off-hook switch is turned on (step SD2). When this switch is turned on, the process transits to a call process (step SD3), and a call is made with the partner user. Thereafter, it is determined whether or not the on-hook switch has been turned on (step SD4). When this switch is turned on, the end-of-call processing such as line disconnection is performed (step SD5), and the process returns to the main routine of FIG. To display the standby screen.

As described above, according to the first embodiment, when a received mail is stored in the reception BOX, each keyword is sequentially read from a plurality of types of keywords stored in the keyword memory 7 and matched with each keyword. The character string to be detected is detected from the received mail, and the matching rate α between the multiple types of keywords and the received mail character string is calculated based on the detection result, and if the calculated matching rate α is greater than the reference value, it is received. Delete the received mail from the received BOX.
In this case, the CPU 1 obtains the product of the number of characters in the character string that matches one type of keyword and the number of character strings that match the keyword as the number of detected characters, and matches the keywords sequentially read from the keyword memory 7. The number of detected characters obtained for each character string to be accumulated is accumulated to obtain the total number of detected characters in the received mail, and the number of detected characters is divided by the total number of characters in the received mail to calculate the matching rate α.
Therefore, it is possible to accurately analyze the contents of the received mail and extract unfavorable mail to be deleted with high accuracy.

  Next, the operation of the second embodiment configured as shown in FIG. 1 will be described with reference to the flowchart of the incoming mail detection process shown in FIG. 9 and the incoming mail display screen shown in FIG. The main routine of the CPU 1, the keyword registration process, a part of the incoming mail detection process, and the flowcharts of the incoming call detection process in the second embodiment will be described with reference to the main routine shown in FIGS. 2 and 3 in the first embodiment. 4 is the same as the flowcharts in the keyword registration process shown in FIG. 4, the part of the incoming mail shown in FIG. 5, and the incoming call detection process shown in FIG. A second embodiment will be described.

  After calculating the coincidence rate α in step SC9 in FIG. 5, in the flowchart in FIG. 9, mail arrival notification is performed by the speaker 10 or the vibrator 11 (step SC15), and it is determined whether or not a certain time has passed. (Step SC16). When the predetermined time has elapsed, the incoming call notification is stopped (step SC17), and it is determined whether or not the value of α is larger than the reference value (step SC18). If the value of α is larger than the reference value, a confirmation screen is displayed on the display unit 8 (step SC19), and the e-mail address, subject, matching rate α, etc. are displayed on the confirmation screen (step SC20).

FIG. 10 is a diagram showing a confirmation screen when the value of the coincidence rate α is larger than the reference value. On this screen, a mail address, a subject, a matching rate α, a deletion switch icon, and a clear switch icon are displayed.
Then, it is determined whether or not the deletion switch is turned on (step SC21). When this switch is turned on, this mail is deleted from the reception B0X (step SC22). Then, the process returns to the main routine. On the other hand, it is determined whether or not the clear switch is turned on (step SC23). When this switch is turned on, the process returns to the main routine without deleting this mail.

  As described above, according to the second embodiment, when a received mail is stored in the reception BOX, each keyword is sequentially read out from a plurality of types of keywords stored in the keyword memory 7 and matched with each keyword. The character string to be detected is detected from the received mail, and the matching rate α between the plurality of types of keywords and the character string of the received mail is calculated based on the detection result. If the calculated matching rate α is larger than the reference value, a message asking for deletion of the mail is displayed on the display unit 8 together with the calculated matching rate α before deleting the undesired mail, and a deletion command is issued. Is input, the mail is deleted from the received BOX. Therefore, as in the first embodiment, it is possible to accurately analyze the contents of the received mail and to extract undesired mail to be deleted with high accuracy and to delete it instead of forcibly deleting it. Can be left to the user's discretion.

In each of the above embodiments, the number of detected characters is calculated by multiplying the number of characters of the keyword and the number of keywords in the mail body. However, when registering a keyword, the keyword to be registered may be weighted and registered. Good. For example, “3”, “3”, “2”, “2”, “1” for the keywords “adult”, “dating”, “unlimited viewing”, “free trial”, “meeting” , “2” is weighted and registered, and when the number of detected characters is calculated, weighting is used instead of the number of characters, and “adult (3)”, “dating (3)”, “unlimited (2)”, The number of detected characters may be calculated by multiplying “free trial (1)”, “meeting (2)” and the number of keywords in the mail text.
Further, after that, the CPU 1 may analyze the received undesired mail and change the weighting value of the keyword of the character string having a high frequency. Further, the received undesired mail may be analyzed and a character string that is not registered as a keyword but frequently appears may be additionally registered as a keyword. For example, character strings “adult” and “H experience” and symbols such as “♂” and “♀” are additionally registered.

  In each of the above embodiments, the invention of an apparatus in which the CPU 1 executes a communication control processing program stored in advance in the ROM 2 has been described. However, the RF block 4 is downloaded from an external server or the like via a network. It is also possible to install the communication control processing program in a writable non-volatile memory or the like, and the CPU 1 executes the communication control processing program. In this case, the invention of the program is realized.

That is, the program stores a first step of storing received mail received via a predetermined communication line in the first storage means, and when the received mail is stored in the first storage means, A second step of sequentially reading each reference character string from a plurality of types of reference character strings stored in the storage means 2 and detecting a character string that matches each reference character string from the received mail; A third step of calculating a match rate between the plurality of types of reference character strings and the character string of the received mail based on the detection result of the step of:
And a fourth step of deleting the received mail if the matching rate calculated in the third step is larger than a reference value.

The block diagram which shows the structure of the mobile telephone in each embodiment of this invention. The flowchart of the main routine of the mobile telephone in each embodiment. The flowchart of the main routine following FIG. The flowchart of the keyword registration process in FIG. The flowchart of the mail incoming detection process in each embodiment. The flowchart of the mail incoming detection process in 1st Embodiment following FIG. The flowchart of the incoming call detection process of each embodiment. The figure which shows the keyword registration screen in each embodiment. The flowchart of the mail incoming call detection process in 2nd Embodiment following FIG. The figure which shows the confirmation screen in 2nd Embodiment when the value of a coincidence rate is larger than a reference value.

Explanation of symbols

1 CPU
2 ROM
3 RAM
4 RF block 5 Switch unit 6 Display driver 7 Keyword memory 8 Display unit 9 Microphone 10 Speaker 11 Vibrator

Claims (4)

Mail storage means for storing received mail received via a predetermined communication line in the first storage means;
When the received mail is stored in the first storage means, each reference character string is sequentially read out from a plurality of types of reference character strings stored in the second storage means, and the characters that match the reference character strings A character string detecting means for detecting a string from the received mail;
An arithmetic means for calculating a matching rate between the plurality of types of reference character strings and the character string of the received mail based on a detection result by the character string detection means;
A mail processing means for deleting the received mail when the matching rate calculated by the calculating means is larger than a reference value;
A communication terminal device.   The mail processing means displays a message asking the deletion of the mail together with the calculated matching rate on a predetermined display means before deleting the received mail, and when the deletion instruction is inputted, the mail processing means The communication terminal device according to claim 1, wherein the communication terminal device is deleted.   The character string detection means obtains, as the number of detected characters, a multiplication value of the number of characters of a character string that matches one type of reference character string and the number of character strings that match the reference character string, and the second storage means The total number of detected characters in the received mail is obtained by accumulating the number of detected characters obtained for each character string that matches the reference character string sequentially read from, and the computing means detects the total number of characters in the total number of characters in the received mail. The communication terminal apparatus according to claim 1, wherein the matching rate is calculated by dividing the number of characters. A first step of storing received mail received via a predetermined communication line in a first storage means;
When the received mail is stored in the first storage means, each reference character string is sequentially read out from a plurality of types of reference character strings stored in the second storage means, and the characters that match the reference character strings A second step of detecting a column from the received mail;
A third step of calculating a matching rate between the plurality of types of reference character strings and the character string of the received mail based on the detection result of the second step;
A fourth step of deleting the received mail if the matching rate calculated in the third step is greater than a reference value;
Communication control processing program that executes

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