JP2012048647A - Portable information terminal, electronic mail display method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable information terminal, an electronic mail display method and a program capable of suppressing occurrence of delays in performing preview display of a text of an electronic mail.SOLUTION: The portable information terminal 10 has: a reception processing unit 20 which extracts identification information 62 and text data from an electronic mail each time the electronic mail is received; an image data generation unit 30 which, for each electronic mail, generates image data 65 for list display out of the extracted text data; an information storage unit 40 which, for each electronic mail, stores the identification information 62 and the image data 65 for list display in association with each other; and a list display unit 50 which extracts the identification information 62 of all the electronic mails subject to list display and the image data 65 for list display of electronic mails selected out of the electronic mails subject to list display, from the information storage unit 40 and performs list display of electronic mails by using the extracted identification information 62 and image data 65.

Description

  The present invention relates to a portable information terminal having an e-mail transmission / reception function, an e-mail display method for displaying a list of e-mails, and a program for realizing them.

  Conventionally, a mail system using a portable information terminal typified by a mobile phone has been constructed (for example, see Patent Document 1). In recent years, due to the improvement in the performance of the hardware constituting the portable information terminal, it has become possible to send and receive e-mails with improved expressive power, such as HTML mail, even in portable information terminals. The amount of data is increasing.

  Furthermore, the portable information terminal is generally provided with a list display function for displaying a list of e-mail transmission / reception times, transmission source addresses, and titles. In recent years, half of the screen is used to display the text of the selected electronic mail at the same time (preview display).

JP 2000-215119 A (FIG. 2)

  By the way, since a personal digital assistant usually responds promptly to a user's request, information other than the text among information to be displayed in a list is always a memory (volatile memory) with a high reading speed and a high writing speed. ). On the other hand, the text data representing the body, the attached file, and the like are read into a non-volatile memory having a slow speed but a large capacity.

  For this reason, the processor of the portable information terminal needs to access the nonvolatile memory to display a preview of the text when an e-mail is selected from the list of e-mails. There is a problem of hanging. In addition, when the selected electronic mail is an HTML mail, since an analysis by an HTML parser is also performed before the preview display, it takes more time.

  As a solution to such a problem, an increase in the capacity of the volatile memory can be considered, but in this case, since the portable information terminal is increased in size, it is difficult to increase the capacity of the volatile memory. Therefore, in the current portable information terminal, when the preview display is performed, the sluggishness of the display occurs as compared with the case where the preview display is not performed, but the user is forced to accept this.

  An object of the present invention is to provide a portable information terminal, an e-mail display method, and a program capable of solving the above-described problems and suppressing the occurrence of slack when previewing the text of an e-mail.

In order to achieve the above object, a portable information terminal according to an aspect of the present invention is a portable information terminal having a function of sending and receiving electronic mail,
A reception processing unit that extracts identification information and text data for identifying the received email from the received email every time the email is received;
An image data generation unit that generates image data for list display from the body data extracted by the reception processing unit for each received e-mail;
An information storage unit that stores the identification information and the image data for list display in association with each received e-mail;
Extracting from the information storage unit the identification information of the e-mails to be listed and the image data for list display of e-mails selected from the e-mails to be listed. Using the extracted identification information and the image data, a list display unit that displays a list of the received emails;
It is characterized by having.

In order to achieve the above object, an e-mail display method according to one aspect of the present invention is a method for displaying a list of e-mails,
(A) each time an e-mail is received, extracting identification information and body data for identifying the e-mail from the received e-mail;
(B) generating image data for list display from the body data extracted in the step (a) for each received e-mail;
(C) For each received e-mail, the identification information extracted in step (a) and the image data for list display generated in step (b) are linked, Storing in a storage device; and
(D) Extracting, from the storage device, the identification information of the e-mails to be listed and the list display image data of the e-mails selected from the e-mails to be listed. And using the extracted identification information and the image data to display a list of the received e-mails;
It is characterized by having.

Furthermore, in order to achieve the above object, a program according to one aspect of the present invention is a program for displaying a list of e-mails by a computer,
In the computer,
(A) each time an e-mail is received, extracting identification information and body data for identifying the e-mail from the received e-mail;
(B) generating image data for list display from the body data extracted in the step (a) for each received e-mail;
(C) For each received e-mail, the identification information extracted in step (a) and the image data for list display generated in step (b) are linked, Storing in a storage device; and
(D) Extracting, from the storage device, the identification information of the e-mails to be listed and the list display image data of the e-mails selected from the e-mails to be listed. And using the extracted identification information and the image data to display a list of the received e-mails;
Is executed.

  As described above, according to the portable information terminal, the e-mail display method, and the program of the present invention, it is possible to suppress the occurrence of slack when previewing the text of the e-mail.

FIG. 1 is a diagram showing a portable information terminal and a mail system that it constitutes in an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the portable information terminal according to the embodiment of the present invention. FIG. 3 is a flowchart showing the operation of the portable information terminal in the embodiment of the present invention.

(Embodiment)
Hereinafter, a portable information terminal, an e-mail display method, and a program according to an embodiment of the present invention will be described with reference to FIGS. First, the structure of the portable information terminal in this embodiment will be described with reference to FIG. FIG. 1 is a diagram showing a portable information terminal and a mail system that it constitutes in an embodiment of the present invention.

  A portable information terminal 10 according to the present embodiment shown in FIG. 1 is a mobile phone or a smartphone having an email transmission / reception function, and can access the mail server 70 via the Internet 80. Then, the portable information terminal 10 transmits an e-mail to other portable information terminals and personal computers via the mail server 70, and receives e-mails from these.

  As shown in FIG. 1, the portable information terminal 10 includes a display device 60 and can display a mail list 61 on the screen of the display device 60. In the example of FIG. 1, the mail list 61 includes identification information 62 of each received email and an email preview 64 selected from the received emails. The identification information 62 is information for identifying the corresponding received mail, and in this embodiment, includes the reception date and time of the corresponding electronic mail, the address of the transmission source, and the title (subject). In the following description, the collection of identification information 62 is referred to as “list information” 63.

  Then, the structure of the portable information terminal 10 is demonstrated using FIG. FIG. 2 is a block diagram showing the configuration of the portable information terminal according to the embodiment of the present invention. As shown in FIG. 2, the portable information terminal 10 includes a reception processing unit 20, an image data generation unit 30, an information storage unit 40, and a list display unit 50.

  The reception processing unit 20 receives an e-mail, and each time it receives the e-mail, it extracts identification information 62 and text data for identifying it from the received e-mail. The image data generation unit 30 generates image data 65 for list display from the body data extracted by the reception processing unit 20 for each received e-mail. The list display image data 65 generated at this time is used as the preview 64. That is, the preview 64 is generated for all received e-mails.

  The information storage unit 40 stores identification information 62 and image data 65 for list display in association with each received e-mail. The list display unit 50 includes identification information 62 (that is, list information 63) of e-mails to be displayed as a list and image data for displaying a list of e-mails selected from the e-mails to be displayed as a list. 65 is extracted from the information storage unit 40. The list display unit 50 displays a list of received emails using the extracted identification information 62 (list information 63) and image data 65 (see FIG. 1).

  In this way, in the portable information terminal 10, image data 65 for preview (for list display) is created every time an e-mail is received. That is, in the portable information terminal 10, image data 65 for preview (for list display) is not created for e-mails to be previewed until the preview display is instructed. For this reason, according to the portable information terminal 10, the occurrence of slack when the body text of the email is preview-displayed is suppressed, and the user can select the target email from the email list display without stress. it can.

  Here, each part of the portable information terminal 10 will be described more specifically. As shown in FIG. 2, the image data generation unit 30 includes a data analysis unit 31 and a buffer 32. The list display unit 50 includes a list processing unit 51 and a buffer 52. Both the buffer 32 and the buffer 52 are storage devices such as a memory. Among these, the buffer 52 is connected to the display device 60 unlike the buffer 32 of the image data generation unit 30. In the present embodiment, the image developed in the storage area of the buffer 52 is displayed on the display screen of the display device 60.

  In the image data generation unit 30, when the data analysis unit 31 receives the body data from the reception processing unit 20, the data analysis unit 31 analyzes the data and specifies the state of text display. For example, when the body data of the e-mail is written in Japanese, the body data is composed of a character code, so the data analysis unit 31 identifies the Japanese character corresponding to each character code. Further, when the electronic mail is an HTML mail, the data analysis unit 301 performs a syntax analysis and specifies a used character, its size, font, figure, and the like.

  Then, the data analysis unit 31 develops an image representing a state in which the specified characters (characters and graphics in the case of HTML mail) are displayed on the storage area of the buffer 32. As a result, image data in a state where the body data is displayed as text is generated. Further, the data analysis unit 31 adjusts the size of the created image data in accordance with the size of the mail list 61 and sets the adjusted image data as image data 65 for list display. Then, the data analysis unit 31 outputs image data 65 for list display to the information storage unit 40.

  In the list display unit 50, the list processing unit 51 acquires the identification information 62 (list information 63) of each electronic mail to be displayed as a list from the information storage unit 40. Further, when the user selects any of the emails, the list processing unit 51 also acquires image data 65 for displaying a list of the selected emails from the information storage unit 40. In the present embodiment, the user selects an e-mail by focusing one of the e-mails in the e-mail list using, for example, the operation key (see FIG. 1) of the portable information terminal 10. It can be carried out.

  Then, the list processing unit 51 expands the image representing the state in which the list information 63 is displayed on the storage area of the buffer 52 and the image of the acquired image data 65 to generate image data of the mail list 61. To do. Thereafter, when the buffer 52 outputs the generated image data to the display device 60, the mail list 61 is displayed on the display screen of the display device 60.

  Next, the operation of the portable information terminal 10 in the embodiment of the present invention will be described with reference to FIG. FIG. 3 is a flowchart showing the operation of the portable information terminal in the embodiment of the present invention. In the following description, FIGS. 1 and 2 are referred to as appropriate. In the present embodiment, the e-mail display method is implemented by operating the portable information terminal 10. Therefore, the description of the e-mail display method in the present embodiment is replaced with the following description of the operation of the portable information terminal 10.

  As shown in FIG. 3, when the reception processing unit 20 first receives an electronic mail from the mail server 70 via the Internet 80, identification information 62 and body data for identifying the electronic mail are received from the received electronic mail. Are extracted (step A1). In step A1, the reception processing unit 20 outputs the identification information 62 to the information storage unit 40 and stores it therein. Further, the reception processing unit 20 outputs the text data to the image data generation unit 30.

  Next, in the image data generation unit 30, when the data analysis unit 31 receives the body data from the reception processing unit 20, the data analysis unit 31 analyzes the data and specifies the state of text display (step A2). At this time, if the received e-mail is an HTML mail, the data analysis unit 31 performs syntax analysis and thereby identifies the state of text display.

  Next, the data analysis unit 31 outputs data specifying the text-displayed state to the buffer 32 to generate image data (step A3). Since the buffer 32 is not connected to the display device 60 as described above, the generated image is not displayed on the screen of the display device 60.

  Next, the data analysis unit 31 cuts out the image data generated in step A3, sets it as image data of an appropriate size as a preview, and sets this as image data 65 for list display (step A4). Further, the data analysis unit 31 outputs the image data 65 for list display to the information storage unit 40.

  Next, when step A4 is executed, the information storage unit 40 stores the output image data 65 in association with the corresponding identification information 62, and manages these as one piece of mail information (step A5). ).

  Next, when the execution of step A5 ends, the list processing unit 51 determines whether or not the user has instructed to display the mail list 61 by a key operation or the like (step A6). As a result of the determination, if no instruction is given, steps A1 to A5 are executed again. On the other hand, if an instruction is given as a result of the determination, step A7 and subsequent steps are executed.

  In step A <b> 7, the list processing unit 51 acquires the identification information 62 (list information 63) for the number of items that can be displayed in the mail list 61 from the information storage unit 40. Then, the list processing unit 51 outputs data specifying the state in which the list information 63 is displayed to the buffer 52, and displays the list information 63 on the screen of the display device 60.

  Next, when the user focuses one of the emails in the list information 63, the list processing unit 51 displays a corresponding list display from the information storage unit 40 based on the identification information 62 of the focused email. Image data 65 is obtained. Then, the list processing unit 51 outputs the acquired image data 65 to the buffer 52, and displays the preview 64 on the screen of the display device 60 (step A8).

  Through the above steps A1 to A8, the list information 61 and the preview 64 are displayed on the screen of the display device 60. The preview image data is generated every time an e-mail is received. For this reason, the time taken to display the preview 64 is minimized, and it is considered that there is very little possibility that the user will feel stress in the display delay.

  Moreover, the program in this Embodiment should just be a program which makes the computer which comprises a mobile telephone or a smart phone perform step A1-A8 shown in FIG. By installing and executing this program on the computer, the portable information terminal 10 and the e-mail display method in the present embodiment can be realized.

  Further, in this case, a CPU (Central Processing Unit) of the computer functions as a reception processing unit 20, a data analysis unit 31, and a list processing unit 51 to perform processing. A storage device such as a memory provided in the computer functions as the information storage unit 40, the buffer 32, and the buffer 52.

  In addition, the program in the present embodiment may be provided in a state stored in a recording medium or via a network such as the Internet. Examples of the storage medium include general-purpose semiconductor storage devices such as CF (Compact Flash) and SD (Secure Digital).

  ADVANTAGE OF THE INVENTION According to this invention, generation | occurrence | production of the shading at the time of carrying out the preview display of the text of an email can be suppressed in a portable information terminal. The present invention is useful for portable information terminals such as mobile phones and smartphones.

DESCRIPTION OF SYMBOLS 10 Portable information terminal 20 Reception processing part 30 Image data generation part 31 Data analysis part 32 Buffer 40 Information storage part 50 List display part 51 List processing part 52 Buffer 60 Display apparatus 61 Mail list 62 Identification information 63 List information 64 Preview 65 List display Image data 70 Mail server 80 Internet

Claims (9)

A portable information terminal having an e-mail transmission / reception function,
A reception processing unit that extracts identification information and text data for identifying the received email from the received email every time the email is received;
An image data generation unit that generates image data for list display from the body data extracted by the reception processing unit for each received e-mail;
An information storage unit that stores the identification information and the image data for list display in association with each received e-mail;
Extracting from the information storage unit the identification information of the e-mails to be listed and the image data for list display of e-mails selected from the e-mails to be listed. Using the extracted identification information and the image data, a list display unit that displays a list of the received emails;
A portable information terminal characterized by comprising:   The image data generation unit generates image data in a state where the body data is displayed as text, and adjusts the size of the generated image data to generate the image data for list display. The portable information terminal described in 1.   The portable information terminal according to claim 1 or 2, wherein the identification information includes at least one of a reception date and time of the electronic mail, a mail address of a transmission source of the electronic mail, and a subject of the electronic mail. A method for listing emails, comprising:
(A) each time an e-mail is received, extracting identification information and body data for identifying the e-mail from the received e-mail;
(B) generating image data for list display from the body data extracted in the step (a) for each received e-mail;
(C) For each received e-mail, the identification information extracted in step (a) and the image data for list display generated in step (b) are linked, Storing in a storage device; and
(D) Extracting, from the storage device, the identification information of the e-mails to be listed and the list display image data of the e-mails selected from the e-mails to be listed. And using the extracted identification information and the image data to display a list of the received e-mails;
An e-mail display method characterized by comprising:   In the step (b), the body data is converted into image data in a text-displayed state, and the image data for list display is generated by adjusting the size of the image data obtained by the conversion. The e-mail display method according to claim 4.   The e-mail display method according to claim 4 or 5, wherein the identification information includes at least one of a reception date and time of the e-mail, a mail address of a transmission source of the e-mail, and a subject of the e-mail. A program for listing emails by computer,
In the computer,
(A) each time an e-mail is received, extracting identification information and body data for identifying the e-mail from the received e-mail;
(B) generating image data for list display from the body data extracted in the step (a) for each received e-mail;
(C) For each received e-mail, the identification information extracted in step (a) and the image data for list display generated in step (b) are linked, Storing in a storage device; and
(D) Extracting, from the storage device, the identification information of the e-mails to be listed and the list display image data of the e-mails selected from the e-mails to be listed. And using the extracted identification information and the image data to display a list of the received e-mails;
A program that executes   In the step (b), the body data is converted into image data in a text-displayed state, and the image data for list display is generated by adjusting the size of the image data obtained by the conversion. The program according to claim 7. The program according to claim 7 or 8, wherein the identification information includes at least one of a reception date and time of the electronic mail, a mail address of a transmission source of the electronic mail, and a subject of the electronic mail.