JP2005100106A - Structured data display program and structured data display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To cause a structured data display device which reads structured data with a data structure for display on a display device to have the function of not displaying part of the structured data. <P>SOLUTION: A Web browser of a car navigation device 1 uses a tag in a step 210 to read a Web page having a data structure; in steps 220-270 specifies a detailed information part based on the data structure of the structured data read and dictionary data; and in a step 280 causes the display device 20 to display the Web page from which the detailed information part specified has been removed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a structured data display program for displaying structured data having data structure information and a structured data display device, and is suitable for use in a Web browser.

  Conventionally, there are many browsers for displaying structured data (for example, Web pages) described in accordance with a markup language syntax rule having information about its own data structure, such as HTML (Hyper Text Markup Language).

  Many web pages are created on the assumption that they are usually viewed on a desktop PC (personal computer) equipped with a monitor of 15 inches or more and assuming that the user is about 30 cm away from the monitor screen. There are many. However, mobile phones, PDAs, car navigation devices, etc. are data that can be displayed on a single screen because the screen size is smaller than that of a desktop PC and the character size needs to be increased because the screen is far away. The amount will decrease.

  For this reason, when viewing a Web page that is supposed to be viewed on a desktop PC, it is necessary to use a large amount of scrolling to view one page. This large amount of scrolling leads to complication of operation, and in turn collects user information. There is a problem of hindering.

In order to solve such a problem, as in Patent Literature 1 and Patent Literature 2, the server holds the preference of a specific user, generates an HTML source based on information required by each user, There is a way to provide. By using this method, it is considered that the user can eliminate information unnecessary for the user and can browse the information in a format suitable for the user's Web page browsing environment.
JP 2000-148766 JP 2000-066942 A

  However, in the case of the above-described method, it is necessary for the user to register information required by the user in advance on the server side, and the ease of browsing is impaired. Also, once information that is determined to be unnecessary by the user is needed, it takes a lot of effort to see the information again.

  In view of the above, the present invention enables the structured data display device itself that reads structured data having a data structure and displays the structured data on the display device has a function of hiding a part of the structured data. For the purpose.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided a computer reading means (210) for reading structured data having data structure information, and a data structure of the structured data read by the reading means. The structured data in a display format in which the detailed information part including the text data of the structured data is specified (210-270), and the detailed information part specified by the specifying means is omitted. Is a structured data display program for functioning as display control means (280, 610 to 640, 810 to 840).

  As a result, the structured data display program causes the computer to function as reading means and display control means, so that the computer reads the structured data having a data structure and displays the structured data on the display device. Functions as a display device. Further, since the structured data display program causes the computer to function as specifying means and display control means, the computer specifies the detailed information part based on the data structure of the read structured data, and the specified detailed information part is displayed. Since it is omitted, it has a function of hiding a part of the structured data.

  It should be noted that the detailed information portion omitted by the display means for display may be all or part of the detailed information portion specified by the specifying means.

  Further, the invention according to claim 2 is the structured data display program according to claim 1, wherein the specifying means includes dictionary data stored in a storage medium (16) for specifying the detailed information. The detailed data portion including the text data of the structured data is specified by comparing with the structured data.

  According to a third aspect of the invention, in the structured data display program according to the first or second aspect, the specifying means finds out the structured data read by the reading means based on the structure of the data. A headline specifying means (230 to 260) for specifying a part; and a detailed information specifying means (270) for specifying a part sandwiched between the headline parts specified by the headline specifying means as a detailed information part. And

  According to a fourth aspect of the present invention, in the structured data display program according to the third aspect, the header specifying unit converts the structured data read by the reading unit into a data structure of the structured data. Based on this, a tree structure is formed, and when there are a plurality of nodes including a predetermined headword in a certain hierarchy in the whole tree structure, the plurality of nodes are specified as a headline portion.

  Further, in the structured data display program according to any one of claims 1 to 4, the invention according to claim 5 is based on a signal to cancel omission of the detailed information portion in the display. The structured data is displayed on a display device in a display format in which the detailed information portion is not omitted.

  Note that the detailed information portion that the display control means does not omit in the display may be all or some of the detailed information portions omitted by the display control means.

  According to a sixth aspect of the present invention, in the structured data display program according to the fifth aspect, when the display control means receives a signal to cancel the omission in the past more than a predetermined number of times. In addition, the structured data is displayed on a display device in a display format that does not omit the detailed information portion specified by the specifying means.

  As a result, the detailed information portion that has frequently received a signal to cancel omission in the past is not omitted, and the omission display does not hinder acquisition of information required by the user.

  According to a seventh aspect of the present invention, in the structured data display program according to any one of the first to sixth aspects, the display control means omits the detailed information portion that is not omitted in the display. The structured data is displayed on a display device in a display format in which the detailed information portion is omitted based on a signal to the effect.

  Note that the detailed information portion that the display control means omits in the display may be all or some of the detailed information portions that are not omitted by the display control means.

  The invention described in claim 8 is a display means (20), a reading means (210) for reading structured data having data structure information, and a data structure of the structured data read by the reading means. The structured data is displayed in a display form in which the detailed information part including the text data of the structured data is specified (220 to 270) and the detailed information part specified by the specifying means is omitted. Is a structured data display device comprising display control means (280, 610 to 640, 810 to 840) for displaying the image on the display device.

  Thus, the structured data display device that reads the structured data having the data structure and displays the structured data on the display device is detailed based on the data structure of the read structured data by the specifying means and the display control means. Since the information part is specified and the specified detailed information part is omitted, a function of hiding a part of the structured data is provided.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the software process for functioning CPU in the following control circuit as a specific means as described in embodiment mentioned later, or a specific means. It is.

  FIG. 1 shows a configuration of a car navigation apparatus 1 according to the first embodiment of the present invention. The car navigation device 1 includes a position detector 11, an internal memory control device 16, an operation switch group 17, an external memory control device 19, a display device 20, a remote control sensor 21, and a control circuit 18 connected thereto.

  The display device 20 includes a display surface such as a liquid crystal display and a speaker, displays the video on the display surface such as a liquid crystal display in response to an input of the video signal from the control circuit 18, and an audio signal from the control circuit 18. The sound is output to the speaker in response to the input.

  The operation switch group 17 includes input devices such as a plurality of mechanical switches provided around the display surface of the display device 20 and a touch panel provided so as to overlap the display surface. And a signal based on the touch on the touch panel is output to the control circuit 18.

  The remote control sensor 21 outputs a signal received from the remote control 22 that transmits a radio signal using infrared rays or the like to the control circuit 18 based on a user operation.

  The position detector 11 includes a known geomagnetic sensor 12, a gyroscope 13, a vehicle speed sensor 14, and a GPS receiver 15 for GPS (Global Positioning System) that detects the position of the vehicle based on radio waves from the satellite. And current position information based on detection of these sensors 12 to 15 is output to the control circuit 18. Since these sensors 12-15 have errors of different properties, they are configured to use a plurality of sensors in a complementary manner. Depending on the accuracy, it may be configured by a part of the above-described components, and may further include a steering rotation sensor, a wheel sensor for each drive wheel, etc. (not shown).

  The internal memory control device 16 includes a nonvolatile storage medium such as an HDD (Hard Disk Drive), and reads data from the nonvolatile storage medium based on a control command from the control circuit 18 and data if possible. Control writing of. Information stored in the nonvolatile storage medium includes so-called map matching data for improving the accuracy of position detection, various data including map data and landmark data, and a program for operation of the car navigation device 1. In addition, there are headword dictionary data described later.

  The external memory control device 19 controls data reading and data writing to an external storage medium such as a DVD-ROM, a memory stick, or a memory card, if possible. Examples of information stored in the external storage medium include map matching data, map data, landmark data, and the like added to the storage medium controlled by the internal memory control device 16.

  The control circuit 18 is configured as a normal computer, and includes a CPU, a ROM, a RAM, a flash memory, an I / O, and a bus line for connecting these configurations. The control circuit 18 executes a program for the operation of the car navigation device 1 read from the ROM and the external memory control device 19, and reads information from the ROM, RAM, and flash memory when executing the program. The information is written in and the signals are exchanged with the position detector 11, the operation switch group 17, the external memory control device 19, the display device 20, the remote control sensor 21 and the like via the I / O.

  The control circuit 18 can exchange information with a Web server on the Internet and various information servers via a mobile communication device such as a mobile phone 13 having a data communication function.

  When the car navigation apparatus 1 is activated, the CPU of the control circuit 18 reads out and executes a boot program, an operating system (hereinafter referred to as OS) from the ROM, and performs hardware control and process management based on the OS. . Processes operating on the OS include a menu program, a route search program, a map display program, a Web page display program (corresponding to a structured data display program), and other programs.

  In the following description, the operation in which the CPU reads and executes a program is considered as the operation of the executed program.

  The menu program hierarchically displays various programs operating on the OS according to the function and purpose of the program, and starts execution of the program selected by the user from the menu displayed. Note that menu display is performed by outputting image data of the menu to the display surface of the display device 20, and the user selects a remote control terminal (hereinafter referred to as a remote control) 22 or an operation switch via the remote control sensor 21. Detection is performed based on a signal input to the control circuit 18 by a selection operation (cursor movement, confirmation button press, etc.) on the group 17.

  The route search program automatically selects an optimum route from the current position to the destination when the destination position is input by the remote controller 22 or the operation switch group 17, and forms a guidance route to display the display device. 20 is displayed. A Dijkstra method or the like is known as a method for automatically setting an optimum route.

  The map display program includes a vehicle current position mark based on the current position information input from the position detector 11, map data read from the external memory control device 19, and additional data such as a guidance route formed by the route search program. Overlaid on the display surface of the display device 20.

  The Web page display program (hereinafter referred to as “Web browser”) is a program that reads data (hereinafter referred to as “Web page”) created according to the syntax rules of HTML and causes the display device 20 to display the data.

  A Web page includes a tag as information for describing the structure of data that the Web page has. In the Web page, the structure of data described in the Web page is defined by this tag. Therefore, the Web page is structured data structured by tags.

  The Web browser detects the tag of the read Web page, and displays data in a display format corresponding to the data structure of the Web page based on the detected tag type. FIG. 2 is a flowchart showing the processing from reading a Web page to displaying it on the display device 20 in the Web browser. In the processing shown in FIG. 2, the user activates the web browser using the menu program, and further operates the operation switch group 17 or the remote control sensor 21 to locate the web page to be displayed on the display device 20 (for example, The process starts when the Web browser detects that the URL (Universal Reference Locator) of the Web page has been specified.

  First, in step 210, a web page is read. Specifically, a signal requesting the designated web page is transmitted to the web server corresponding to the designated location. This transmission is performed using the mobile phone 23.

  The Web server is a device that is connected to an external network 24 such as the Internet, and that receives a request signal designating a Web page from the external network 24 and transmits the Web page to a signal transmission source.

  Then, the Web page is received from the Web server via the mobile phone 23, and the received data is stored in a predetermined area on the RAM of the control circuit 18.

  An example of the Web page read in this way is shown in FIG. FIG. 3 shows a display image when the Web page is displayed in the format specified by the tag of the Web page, in other words, a display image when the Web page is displayed by a typical Web browser. Represents.

  The first line displayed in FIG. 3, “XXX News XXX Year △△ Month ◇ Day”, is a table tag (start tag <font>, end tag </ font>) in the Web page. ) To specify the portion to be enlarged. Such a font tag is merely a tag for specifying the size and color of a display character, and is not a tag for defining a data structure. In addition, the image tag (<img>) for displaying an image and the anchor tag (start tag <a>, end tag </a>) indicating a hyperlink to another Web page similarly define the data structure. It is not a tag to do.

  In FIG. 3, the portion displayed in the second and lower lines is surrounded by one table tag (start tag <table>, end tag </ table>) in the Web page, thereby displaying a table. It is specified to be a power part. This table tag is a tag that defines the data structure because it indicates that the data has a tabular structure.

  In addition, the second and following lines enclosed by the table tag are a plurality of parts (heading part 1, heading part 2, heading) enclosed by line tags (start tag <tr>, end tag </ tr>). Part 3, heading part 4, detailed information part 1, detailed information part 2, detailed information part 3, and detailed information part 4). . This row tag is also a tag that defines the data structure, like the table tag. Note that each of the detailed information portions 1 to 4 in FIG. 3 is a character display extending over a plurality of lines, but the whole of the plurality of lines is regarded as one line in the structure of the table.

  The portion surrounded by each row tag is further divided into portions surrounded by cell tags (start tag <th> or <td>, end tag </ th> or </ td>). Thus, the cells in each row of the table are divided. This row tag is also a tag that defines the data structure, like the table tag. In the Web page table illustrated in FIG. 3, each portion surrounded by the row tags has only one portion surrounded by cell tags. That is, in this table, only one cell exists in one row.

  After the processing in step 210 as described above, the processing proceeds to step 220 in FIG. 2 and divides the read web page into tokens. Here, the token refers to the tag itself or a character string surrounded by the tag and the tag. A plurality of consecutive tags are regarded as one token.

  Next, in step 230, the data in the read Web page is made into a tree structure based on the data structure of this data. Hereinafter, this tree structure is referred to as a syntax tree. FIG. 4 shows a syntax tree of the Web page illustrated in FIG. In FIG. 4, for the sake of simplicity of explanation, the display of tokens corresponding to the portion after the economic heading portion in FIG. 3 is omitted.

  The syntax tree is composed of “nodes” and “branches” and has a structure in which there are nodes at both ends of one branch. In FIG. 4, one node is described in one row, and branches (for example, branches 31, 32, and 33) are described as broken lines connecting the nodes. The root node corresponding to the root of the syntax tree is a table tag (<table>).

  Also, in this syntax tree, the number of branches that must be passed to reach a specific node from the root node is called the hierarchy of the specific node. For example, since all nodes including cell tags (<td> or <th>) in this syntax tree are always reached from the root node through two branches, the hierarchy of these nodes is all It is the same 2nd hierarchy.

A specific syntax tree is generated by reading tokens in order from the top of the Web page and performing the following processes (1) to (3) for the tokens. At the stage of reading the first token, an area for a variable named a hierarchy counter is secured in the RAM of the control circuit 18, and the value of that variable is set to zero.
(1) Whether the target token is a start tag (<table>, <tr>, etc.) for determining the data structure of the Web page, or an end tag (</ table>, </ tr>) for determining the data structure Etc.) or other tokens. Note that whether the tag determines the structure of the Web page or not is set in advance in the Web browser.
(2) If the token is a start tag for determining the data structure of the Web page, the token hierarchy is set to the current hierarchy counter value and the hierarchy counter value is incremented by one. If the token is an end tag for determining the data structure of the Web page, the token is excluded from the syntax tree and the value of the hierarchy counter is decreased by one. If the token is a token other than a tag for determining the data structure of the Web page, the token hierarchy is set to the current hierarchy counter value.
(3) For tokens that are not excluded from the syntax tree in (2), among the tokens having one value less than the value of the token hierarchy, the processing of (1) to (3) is performed at the end at the present time. The target token is the parent node of the token. If there is no parent node, the token becomes the root node. Note that a parent node of a token is a node that reaches through a branch by going up one level (reducing the number of layers by 1) from the node in the syntax tree corresponding to the token.

  In this way, when the processes (1) to (3) are performed for all tokens, the hierarchy and parent node of each token are determined. Thereby, a syntax tree in which each token and a token corresponding to the parent node are connected by a branch is specified.

  Next, in step 240, a token that hits the entry word dictionary data is searched. The headword dictionary data is data having a plurality of words such as words and phrases, and is stored in advance in the HDD of the internal memory control device 16. As words included in this headword dictionary, words and phrases that are generally often included in headlines, such as “sports” and “society”, are selected in advance.

  As a specific search method, for each word / phrase included in the entry word dictionary data, a token including the word / phrase is searched. However, tokens consisting of tags are excluded from search targets. Then, the target token hit in the search and the hierarchy in the syntax tree of the token are listed in a predetermined storage area in the RAM of the control circuit 18. For example, in the example of FIG. 4, a third-level token 34 including the characters “society” and a third-level token 35 including the characters “sports” are listed.

  Next, in step 250, it is determined whether or not a predetermined n or more corresponding tokens exist in the same hierarchy in the syntax tree. Specifically, the tokens listed in step 240 are divided into groups having the same hierarchy in the syntax tree, and it is determined whether or not there is a group having n or more tokens among these groups. . As n, for example, 2, 3 or the like can be considered. If this determination is affirmative, the process proceeds to step 260, and if negative, the process proceeds to step 280. For example, in the example of FIG. 4 where n = 2, this determination is affirmative because the group of tokens in the third hierarchy includes two or more tokens.

  In step 260, a predetermined part including the corresponding token is set as a heading part. The corresponding token is a token included in the group having n or more tokens. The predetermined part is a sibling token of the corresponding token, all descendant tokens of the corresponding token and sibling token, and a common ancestor token for all the corresponding tokens in the group including the corresponding token. All tokens in the middle of the path in the syntax tree leading to

  Here, the descendant tokens of a token are tokens of all nodes that can be traced from a node in the syntax tree of a token through the branches without going up the hierarchy (reducing the number of hierarchies).

  Also, a sibling token of a token means a token of all nodes (excluding its own token) that reaches through a branch by going down one level from the parent node of that token (increasing the number of hierarchies by one). .

  An ancestor token of a token refers to tokens of all nodes that can be traced from a node in the syntax tree of a token through branches without going down the hierarchy.

  An ancestor token common to a plurality of tokens refers to a token of a node having the highest hierarchy number in the syntax tree among ancestor tokens for all of the plurality of tokens.

In the example of FIG. 4, the sibling tokens of the token 34 that is the corresponding token are a token 37, a token 38, and a token 39. The sibling tokens of the token 35 are a token 40, a token 41, and a token 42. Also, there are no sibling tokens or descendant tokens of the corresponding token.

  A common ancestor token of the corresponding token 34 and the corresponding token 35 is a table token 36. Accordingly, tokens 43 and 44 are all tokens in the middle of the path in the syntax tree from the common ancestor token to the corresponding token 34. Further, tokens 45 and 46 are all tokens in the middle of the path in the syntax tree from the common ancestor token to the corresponding token 35.

  Therefore, in the example of FIG. 4, the tokens 43, 44, 37, 38, 34, 39 are the heading part 1, and the tokens 45, 46, 40, 41, 35, 42 are the heading part 2.

  Next, in step 270, when there is a certain number of characters or more in a narrow portion from one heading portion to the next heading portion, the narrow space portion is specified as a detailed information portion. In the present embodiment, the range from the token next to the last heading part in the Web page to the last token in the Web page is also the narrow part. A certain amount is the number of characters determined in advance according to the characteristics of the function of the car navigation device 1 such as the size of the display screen and the size of characters to be displayed. The ratio of these characters to the display screen is determined to be a predetermined value (for example, 20%, 50%, 100%, 200%). Note that the number of characters refers to the number of characters included in a token other than a token consisting of tags. The information of the detailed information portion specified in this way is stored in the RAM of the control circuit 18.

  In the example of FIG. 4, the portion sandwiched between the token 39 and token 45, which are the heading portion, and the portion after the token 42, which is the heading portion, are narrow portions, and each narrow portion has a number of characters of a predetermined amount or more. Assuming that it is included, these narrow portions are referred to as detailed information portion 1 and detailed information portion 2, respectively.

  Next, in step 280, the Web page is displayed on the display device 20 in a format in which the detailed information part specified in step 270 is changed to an ellipsis. That is, the display screen signal of the Web page in the format in which the detailed information part specified in step 270 is omitted and the ellipsis is arranged in the omitted part is output to the display device 20. The abbreviation symbol may be a graphic symbol, an image symbol, or a character symbol that indicates that the detailed display is omitted and that the screen space for displaying the abbreviation symbol is small.

  In the example of FIG. 4, a typical and standard browser displays a Web page that is displayed on the screen as shown in FIG. In the display of FIG. 5, each of the detailed information portions 1 to 4 in FIG. 3 is replaced with the ellipsis 1 to 4.

  In step 280, when the detailed information part is not specified, such as when the processing is shifted from step 250, the Web page is displayed on the display device 20 according to the description content of the Web page without omission.

  By the processing of FIG. 2 of the Web browser as described above, the car navigation apparatus 1 reads the Web page having the data structure by the tag in Step 210 and the data structure and dictionary of the structured data read in Steps 220 to 270. The detailed information portion is specified based on the data, and the display device 20 is caused to display the Web page in which the specified detailed information portion is omitted in step 280, so that a part of the Web page is hidden. It has become. The screen display becomes compact and the amount of display data per Web page can be reduced. The user can reach the target information with a small amount of scrolling. In addition, since the ellipsis is displayed instead of the omitted detailed information portion, the user can easily know that the detailed information portion is omitted.

  In addition, the Web browser can detect that the user has selected any one of the ellipsis 1 to 4 by operating the operation switch group 17 or the remote controller 22. The detection corresponds to detecting an input of a signal indicating the selection from the operation switch group 17 or the remote control sensor 21. Note that the signal indicating the selection is a signal indicating canceling the omission of the detailed information portion in the display of the Web page. When such a signal is detected, the Web browser starts processing as shown in FIG.

  In step 610, it is first identified which ellipsis symbol is selected from among the ellipsis symbols for the detected operation.

  Next, in step 620, the detailed information part corresponding to the ellipsis specified in step 610 is specified, and the detailed information part and the predetermined re-display are displayed in the ellipsis part of the display currently displayed on the display device 20. Image data in a format that displays an ellipsis is created in the RAM of the control circuit 18. This detailed information portion can be specified by using the information of the result specified in step 270 of FIG. 2 in the RAM of the control circuit 18. Further, as the re-omission symbol, it is sufficient to indicate that a detailed omissible display is displayed, whether it is a graphic symbol, an image symbol, or a character symbol.

  Next, in step 630, the selected ellipsis in the image data in the RAM is deleted.

  Next, in step 640, the display device 20 is caused to redraw the page. Specifically, the image data signal in the RAM generated in steps 620 and 630 is output to the display device 20. In the example of FIG. 5, when the ellipsis 4 is selected by the user, an image that the Web browser displays on the display device 20 by the processing of steps 610 to 640 is shown in FIG. In place of the ellipsis 3 in FIG. 5, a detailed portion 3 and a re-ellipsis are displayed.

  A signal for canceling the omission of the detailed information part by the processing of the Web browser as described above, that is, that the user has selected one of the ellipsis 1 to 4 by operating the operation switch group 17 or the remote controller 22. Based on a signal from the operation switch group 17 or the remote control sensor 21, the Web page can be displayed on the display device in a display format that does not omit the detailed information portion. Therefore, even an omitted portion can be easily displayed as required by the user.

  In addition, the Web browser can detect that the user has selected one of the repeated omission symbols by operating the operation switch group 17 or the remote controller 22. The detection corresponds to detecting an input of a signal indicating the selection from the operation switch group 17 or the remote control sensor 21. Note that the signal indicating the selection is a signal indicating omitting a detailed information portion that is not omitted in the display of the Web page. When such a signal is detected, the Web browser starts processing as shown in FIG.

  In step 810, it is first determined which of the ellipsis symbols is the selected ellipsis symbol.

  Next, in step 820, the detailed information portion corresponding to the re-omission symbol specified in step 810 is specified, and the same ellipsis as described above is displayed in the detailed information portion of the display currently displayed on the display device 20. Image data in such a format is created in the RAM of the control circuit 18.

  In step 830, the selected ellipsis and corresponding detailed information portion in the image data in the RAM are erased.

  Next, in step 840, the display device 20 is caused to redraw the page. Specifically, the image data signal in the RAM generated in steps 820 and 830 is output to the display device 20.

  Through the processing of the Web browser as described above, a signal indicating that the detailed information portion not omitted in the display is omitted, that is, the user operates the operation switch group 17 or the remote controller 22 to select one of the re-abbreviated symbols. Based on the signal from the operation switch group 17 or the remote control sensor 21, a Web page can be displayed on the display device in a display format in which the corresponding detailed information portion is omitted. Therefore, even the displayed detailed information part can be easily hidden as required by the user.

  In the above-described embodiment, when there is a detailed information part that the user frequently cancels the omission display, if there is a display request for the page next, the detailed information is displayed from the time when the page is first displayed. The portion may not be omitted. That is, in step 280 of FIG. 2, the number of times the Web browser has received a signal in the past for canceling the detailed information part for each of the detailed information parts specified in step 270 is a predetermined number (for example, three times). When it is determined that there are many, the Web page may be displayed on the display device in a display format that does not omit the detailed information portion.

  Whether or not the number of times of receiving a signal to release the detailed information portion in the past is greater than the predetermined number is determined in the HDD of the internal memory control device 16 every time an ellipsis is specified in step 610 of FIG. In the abbreviation cancellation history table stored in the table, the value of the item for specifying the number of ellipsis in the ellipsis entry is incremented by 1. In step 280, the contents of the abbreviation cancellation history table The determination may be made by comparing with a predetermined number of times.

  As a result, the detailed information portion that has frequently received a signal to cancel omission in the past is not omitted, and the omission display does not hinder acquisition of information required by the user.

  In addition, the display omission or non-omission of the detailed information portion of the read web page may be explicitly specified by the user as described in the above embodiment, or the display omission of each detailed portion is omitted in advance. A file having a setting for non-omission may be included in the internal memory control device 16, and the Web browser may determine whether to omit or not to display based on the file.

  In the above-described embodiment, the car navigation device 1 is exemplified as the structured data display device and the device that operates the structured data display program. However, this is not limited to the car navigation device, and for example, a PDA (Personal) (Digital Assistant), mobile phone, and the like. That is, it suffices to have a function of reading structured data and a function of displaying the read structured data.

  As structured data structured by tags, besides data described by HTML, for example, data described by XML (eXtended Markup Language), data described by SGML (Standard Generalized Markup Language) are included. is there.

It is a figure showing composition of car navigation device 1 concerning an embodiment of the present invention. 5 is a flowchart of processing from reading a Web page to displaying on a display device 20 by a Web browser. It is a figure which shows an example of the display image when a web page is displayed in the format as prescribed | regulated by the tag of the web page. It is a figure which shows the syntax tree of the web page illustrated in FIG. It is a figure which shows the display in the display apparatus 20 of the web page in which the detailed information part was abbreviate | omitted. It is a flowchart of the process of the Web browser for displaying the omitted detailed information part. 6 is a diagram illustrating an image that the Web browser displays on the display device 20 when the ellipsis 4 is selected by the user in the example of FIG. It is a flowchart of the process of the Web browser for omitting the displayed detailed information part again.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Car navigation apparatus, 11 ... Position detector, 12 ... Geomagnetic sensor,
13 ... Gyroscope, 14 ... Vehicle speed sensor, 15 ... GPS receiver,
16 ... Wireless communication device, 17 ... Operation switch group, 18 ... Control circuit,
19 ... External memory control device, 20 ... Display device, 21 ... Remote control sensor,
22 ... remote control, 23 ... mobile phone, 24 ... external network.

Claims (8)

Computer
A reading means (210) for reading structured data having data structure information;
Based on the data structure of the structured data read by the reading means, specifying means (210-270) for specifying detailed information portions including text data in the structured data, and the details specified by the specifying means A structured data display program for functioning as display control means (280, 610 to 640, 810 to 840) for displaying the structured data on a display device in a display format in which an information portion is omitted. Detailed information including text data of the structured data by comparing the structured data with dictionary data stored in a storage medium (16) for specifying the detailed information. The structured data display program according to claim 1, wherein a portion is specified. The specifying means includes, from the structured data read by the reading means, heading specifying means (230 to 260) for specifying a heading part based on the structure of the data;
3. The structured data display according to claim 1, further comprising: detailed information specifying means (270) for specifying a portion sandwiched between the heading parts specified by the heading specifying means as a detailed information part. program. The headline specifying unit converts the structured data read by the reading unit into a tree structure based on the data structure of the structured data, and a node including a predetermined headword in a certain hierarchy in the entire tree structure. 4. The structured data display program according to claim 3, wherein when there are a plurality of nodes, the plurality of nodes are specified as a heading part. The display control means causes the display device to display the structured data in a display format in which the detailed information portion is not omitted based on a signal to cancel the omission of the detailed information portion in the display. The structured data display program according to any one of claims 1 to 4. The display control means displays the structured data in a display format that does not omit the detailed information portion specified by the specifying means when the number of times that the signal indicating cancellation of the omission is received in the past is greater than a predetermined number. 6. The structured data display program according to claim 5, which is displayed on a display device. The display control means causes the display device to display the structured data in a display format in which the detailed information portion is omitted based on a signal to omit the detailed information portion that is not omitted in the display. The structured data display program according to claim 1, wherein the structured data display program is a program for displaying structured data. Display means (20);
Reading means (210) for reading structured data having data structure information;
Specifying means (220 to 270) for specifying a detailed information portion including text data of the structured data based on the data structure of the structured data read by the reading means;
Structured data display comprising display control means (280, 610 to 640, 810 to 840) for displaying the structured data on a display device in a display format in which the detailed information part specified by the specifying means is omitted. apparatus.

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