JP2006031125A - Communication terminal and address access method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication terminal and an address access method capable of further easily designating a communication route used for the following communications based on data constituted in a markup language. <P>SOLUTION: A HTML analysis processing part 219 analyzes and displays received HTML data on a liquid crystal display 214, and extracts and stores an anchor text, an URL and a communication interface of each link in a link information storage part 220. When any anchor text is selected by a touch panel 215, an event processing part 217 refers to the link information storage part 220 to acquire the corresponding URL and communication interface, and transmits them to a content acquisition processing part 218. The content acquisition processing part 218 makes a communication control part 213 connect with the URL by use of the corresponding communication interface. HTML data newly received after connection are transmitted to the HTML analysis processing part 219 and analyzed again there. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a communication terminal having a plurality of communication interfaces and an address access method using such a communication terminal, and in particular, a plurality of communications that can attempt to communicate with contents that handle information and services through different communication paths. The present invention relates to a communication terminal having an interface and an address access method using such a communication terminal.

  In recent years, with the maturity of communication technology and the reduction in the cost of circuit components such as chips, many communication networks equipped with wireless LAN (Local Area Network) access points have been constructed by individuals, companies, or hotspot operators. It has become. Many communication networks using a wireless LAN are connected to the Internet, and access to the Internet by so-called bearer communication using a wireless LAN terminal is widely performed. On the other hand, Internet connection services via a mobile phone network are provided by mobile phone companies and the like, and access to the Internet using mobile phones has become common.

  In these various communication networks, not only the contents of available services but also communication quality such as communication speed and communication charge and the degree of security to be secured are often different. For example, there may be a difference that an Internet connection via a wireless LAN is faster and less expensive, but an Internet connection via a mobile phone network ensures higher security. Therefore, the wireless LAN is used for normal communication, and the cellular phone network is used for exchanging important information. Even if the communication destination is the same, the communication quality varies depending on the situation. It is desirable that communication networks can be properly used. However, in order to perform communication by selecting a plurality of different communication networks, a communication interface corresponding to each communication network is required. In addition, a plurality of communication terminals such as a wireless LAN terminal and a mobile phone must be used properly, which not only complicates the work for starting communication, but also is not appropriate communication when it is necessary to carry the communication terminal. There is also a risk of carrying the terminal by mistake.

  In view of this, a communication terminal in which a plurality of communication interfaces (bearers) are incorporated in one device has been conventionally proposed (see, for example, Patent Document 1). In the first proposal, the communication terminal receives a selection of a communication interface to be used from a user, and uses the communication interface selected when data is transmitted.

  Furthermore, a communication terminal in which a communication interface to be used is selected on the communication terminal side according to the type of transmission data has been proposed (see, for example, Patent Document 2 and Patent Document 3). In these second and third proposals, a table in which the type of transmission data is associated with the communication interface to be used is provided in advance, and the transmission data is referred to by referring to this table when data is transmitted. It is possible to select a communication interface suitable for each type. In these proposals, the communication interface can be automatically switched and used on the communication terminal side, and it becomes possible to provide a more comfortable communication environment that reduces the burden on the user.

  By the way, for example, when trying to access a specific server on the Internet, access may be possible or impossible depending on the communication path. In addition, the communication path may be different when the communication interface is different. Therefore, it may be necessary to select a communication interface according to the server to be accessed.

  In the second and third proposals, the communication interface is switched according to the type of transmission data. Therefore, if the correspondence between the transmission data and the accessible server or the correspondence with the communication interface including this is described in the table, the communication interface is automatically switched according to the transmission data. It is possible to avoid a situation where access to the server becomes impossible. However, the communication network layout relationship of the entire communication system may change over time, and when the contents of the table become old, a communication interface that cannot access the target server may be selected.

In view of this, a communication terminal has been proposed in which a table that associates the type of transmission data with a communication interface can be appropriately updated with information sent from the communication network side (see, for example, Patent Document 4). According to the fourth proposal, the communication network constituting the communication system corresponds to the URL (Uniform Resource Locator) of each server existing on the communication network and the communication interface to be used when communicating with each server. There is a specific server that holds the attached tables. The communication terminal can download necessary table information from this specific server as appropriate, and can update the contents of its own table to the latest one.
Japanese Patent Laying-Open No. 2004-40483 (paragraphs 0009 and 0023, FIG. 1) JP 2001-237976 (paragraphs 0026 and 0027, FIG. 6) JP 2001-119252 A (paragraphs 0041 and 0042, FIG. 1) Japanese translation of PCT publication No. 2002-523928 (paragraph 0059, FIG. 4B)

  By the way, in many communication networks using a wireless LAN, the TCP / IP (Transmission Control Protocol / Internet Protocol) protocol is used as a communication protocol as in the Internet. Therefore, when connecting to a communication network using a wireless LAN, commercially available application software such as a WWW (World Wide Web) browser or mailer used for Internet connection via a mobile phone network may be used almost as it is. Many. Therefore, when the same protocol is used in each communication network to be connected, common application software can be used. That is, it is possible to access various websites on the Internet using a common WWW browser while using a plurality of communication interfaces.

  On the other hand, content such as information and services included in websites launched by providers, companies, or individuals is diversified, and communication quality required by the user or content creator is usually different for each content. For example, when receiving video data by streaming, relatively high-speed communication is required. In chat, where conversations are performed using characters, communication at a relatively low cost is required. On the other hand, high security is required for net banking, which can use services of financial institutions such as banks. Further, the communication quality may differ depending on the communication path as described above.

  That is, in the case of a communication terminal having a plurality of different communication interfaces, the communication interface suitable for use may be different for each content. In such a case, it is desirable that communication can be performed while appropriately selecting a communication interface suitable for each content.

  However, for example, when a hyperlink to a desired URL is selected and data is received from the URL, the type of data and the data size may be unknown, and the communication terminal that acquires the content is appropriate. Communication path may not be selected. Also, in order to ensure high security for services that involve the transmission of credit card numbers on websites, make sure that the communication terminal uses a highly secure communication path when transmitting data. There is a need.

  Therefore, in order to improve the security of website content and to realize detailed services for users on the communication terminal side, it is used by the website content creator to acquire the next content on the communication terminal and transmit the next data. It is desirable that the communication interface to be specified can be specified in relation to the communication path.

  However, in order to specify the communication path on the content creator side by applying the fourth proposal, the content creator side associates each URL that can be a communication partner of the communication terminal with an appropriate communication interface. It is necessary to create a table and register it on a specific server. In addition, each communication terminal must acquire information about all URLs that may be accessed and store them in its own table. The capacity increases and it takes time to update the table. That is, it is difficult to apply to a WWW browser characterized by being able to freely browse a large number of unspecified websites by hyperlinks.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a communication terminal and an address access method that can more easily specify a communication path to be used for subsequent communication based on data configured in a markup language.

  According to the first aspect of the present invention, (b) a plurality of communication means that communicate with each other through different communication paths, and (b) data acquired using any of the plurality of communication means is in a predetermined markup language. A markup language discriminating means for discriminating this, and (c) decoding the markup language discriminated by the markup language discriminating means and linking it to an address on the communication network. Link information extracting means for extracting link information, and (d) communication for selecting a communication means to be used when accessing an address indicated by each link information from each link information extracted by the link information extracting means. Communication means selection information acquisition means for acquiring means selection information; and (e) each communication hand acquired by the communication means selection information acquisition means. Corresponding communication means determining means for determining which of the plurality of communication means corresponds to the selection information, and (f) each of the addresses on the communication network indicated by the communication means and link information determined by the corresponding communication means determining means. Communication means / address correspondence storage means for associating and storing, (g) address designation means for designating the address of the communication destination, and (h) communication means / address correspondence relation at the address designated by this address designation means (I) when one of the plurality of communication means is searched by the search means, the address specified by the address specifying means is accessed using the search means. The communication terminal is provided with a communication means selection means.

  That is, according to the first aspect of the present invention, the communication terminal includes a plurality of communication means for performing communication through different communication paths. If the data acquired by communication using these is configured in a predetermined markup language such as HTML (Hyper Text Markup Language) (including when some are configured), this is determined, and the mark Link information is extracted from the up-language, and communication means selection information is acquired from the extracted link information. The link information is for linking to an address on a communication network such as a hypertext link, for example, and the communication means selection information is for selecting a communication means to be used when accessing the address indicated by each link information. Is. It is determined which of the plurality of communication means each of the acquired communication means selection information corresponds to, and the determined communication means is associated with the address indicated by the link information, and the communication means / address correspondence relationship. Stored in the storage means. Then, when the address of the next or subsequent communication destination is designated, the communication means / address correspondence storage means is searched by that address, and any one of the plurality of communication means provided in the own apparatus is searched. And the designated address is accessed using the communication means. Thereby, the communication terminal can select the communication means used when accessing the address represented by the link information included in the data based on the acquired data configured in the predetermined markup language. That is, the creator of the data using the markup language is used for the next or subsequent access to the communication terminal that has acquired the data configured in the markup language by the link information added with the communication means selection information. A communication path can be easily specified.

  In the invention described in claim 9, (a) data obtained by using any one of a plurality of communication means that communicate via different communication paths provided in the communication terminal is configured in a predetermined markup language. A markup language determining step for determining the case, and (b) link information for extracting link information for decoding the markup language determined in the markup language determining step and linking to an address on the communication network And (c) communication for acquiring communication means selection information for selecting a communication means to be used when accessing an address indicated by each link information from each link information extracted in this link information extraction step. Means selection information acquisition step and (d) each communication acquired in this communication means selection information acquisition step A corresponding communication means determination step for determining which of the plurality of communication means corresponds to the stage selection information; and (e) an address on the communication network represented by the communication means and link information determined in the corresponding communication means determination step. A storage step of storing each of them in communication means / address correspondence storage means in association with each other; (f) an address designation step for designating the address of the communication destination; A search step for searching for the address correspondence storage means; and (h) when any one of the plurality of communication means is searched in this search step, the communication means is used to specify the address specification step. And a communication means selection step for accessing the address.

  That is, in the invention described in claim 9, the communication means selection information for selecting an address on the communication network and the communication means to be used is obtained from the link information included in the data configured in the acquired predetermined markup language. It is acquired, and it is determined which of the plurality of communication means each acquired communication means selection information corresponds to. Each of them is stored in a state associated with the address represented by the link information. When one of the addresses stored as the next or subsequent communication destination is specified, the stored communication means is retrieved and the specified address is accessed using the corresponding communication means. . Accordingly, it is possible to select a communication means to be used when accessing the address represented by the link information included in the data based on the acquired data configured in the predetermined markup language. That is, the creator of the data using the markup language is used for the next or subsequent access to the communication terminal that has acquired the data configured in the markup language by the link information added with the communication means selection information. A communication path can be easily specified.

  As described above, in the present invention, communication is used when an address is acquired from link information included in acquired markup language data and an address indicated by the link information is accessed based on the link information. Determine the means. Then, when accessing the address acquired from the link information, the corresponding communication means is used. As a result, the data creator configured in the markup language can easily specify the communication path to be used for the next or subsequent access to the communication terminal that has acquired the data.

FIG. 1 shows an outline of the configuration of a communication system according to an embodiment of the present invention. In this communication system 200, a portable information terminal 201 as a communication terminal that transmits and receives various types of information communicates using the first network 202 ₁ or the second network 202 ₂ using the TCP / IP protocol. Is supposed to do. A first wireless base station 203 ₁ is arranged in the first network 202 _1, and a second wireless base station 203 ₂ is arranged in the second network 202 ₂ , respectively. A first wireless communication antenna 204 ₁ and a second wireless communication antenna 204 ₂ for performing communication are provided.

The portable information terminal 201 can be connected only to the first wireless base station 203 ₁ when the _first wireless communication antenna 204 ₁ is used, and the second wireless base station when the second wireless communication antenna 204 ₂ is used. It has become connectable only to station 203 _2. That is, the portable information terminal 201 can access the first network 202 ₁ using the first wireless communication antenna 204 _1, while using the second wireless communication antenna 204 ₂ to access the second network 202. ₂ can be accessed. A first WWW server 205 ₁ is connected to the first network 202 _1, and a second WWW server 205 ₂ is connected to the second network 202 ₂ . In the present embodiment, it is assumed that the domain name of the first WWW server 205 ₁ is “carrier.ne.jp” and the domain name of the second WWW server 205 ₂ is “archive.ne.jp”.

FIG. 2 shows the configuration of the portable information terminal used in this embodiment. The portable information terminal 201 includes a first wireless communication control unit 211 ₁ that controls the first wireless communication using the _first wireless communication antenna 204 ₁ , and a second wireless communication antenna 204 ₂ that uses the _second wireless communication antenna 204 ₂ . A second wireless communication control unit 211 ₂ that controls the wireless communication of the second wireless communication control unit 211 and a communication control unit 213 that is connected to both wireless communication control units 211 ₁ and 211 ₂ and performs communication control common to both. It has been. In addition, a liquid crystal display 214 as a display unit is provided as an interface with the user, and a touch panel 215 is provided on the front surface thereof. A WWW browser processing unit 216 is disposed between the communication control unit 213, the liquid crystal display 214, and the touch panel 215.

  The WWW browser processing unit 216 includes an event processing unit 217 that performs processing corresponding to various events. The event processing unit 217 includes a content acquisition processing unit 218 that acquires content, an HTML analysis processing unit 219 that analyzes HTML (Hyper Text Markup Language) data, and a link that stores link information as various types of information regarding a link destination. It is connected to the information storage unit 220. Further, the HTML analysis processing unit 219 and the link information storage unit 220 are directly connected without going through the event processing unit 217. Here, HTML is a document structure description language, and HTML data refers to text data described in HTML. Inside the HTML analysis processing unit 219, a communication interface designation acquisition unit 221 that reads the designation of the communication interface included in the HTML data is arranged. The content acquisition processing unit 218 in the WWW browser processing unit 216 is connected to the communication control unit 213, the event processing unit 217 is connected to the touch panel 215, and the HTML analysis processing unit 219 is connected to the liquid crystal display 214.

Each configuration of the WWW browser processing unit 216 is realized by a CPU (Central Processing Unit) (not shown) and a storage medium such as a ROM (Read Only Memory) that stores a control program. The entire processing unit 216 functions as WWW browser software (hereinafter simply referred to as a browser). A first radio communication by the first radio communication control unit 211 _1, the second radio communication by the second wireless communication control unit 211 _1, a pre-priority is set as the default, the content acquisition processing unit 218 is registered.

The first WWW server 205 ₁ or the second WWW server 205 shown in FIG. 1 is selected by selecting a hypertext link (hereinafter simply referred to as a link) of HTML data on the portable information terminal 201 having such a configuration. _The case of acquiring content from ₂ will be described. It is assumed that the content including the first HTML data is read into the browser and the content is displayed on the liquid crystal display 214 as the first web page.

FIG. 3 shows the first web page based on the first HTML data displayed on the liquid crystal display. The liquid crystal display 214, as the first web page 226 _1, the string "menu""News" is displayed. The underline attached to these character strings indicates that the character string is linked to another specific web page. By pressing a portion corresponding to the underlined character string on the touch panel 215, the linked page is displayed on the liquid crystal display 214.

FIG. 4 shows the description contents of the first HTML data. Two links are described as the first HTML data 227 ₁ . The first is a link for “menu”, and “http://provider1.co.jp/menu.html” as a link destination is described using an anchor tag (link tag). The second is a link about “notice”, and the URL “http://carrier.ne.jp/notice.html” as a link destination is similarly described using an anchor tag. For the latter, communication interface priority information “bearer =“ first wireless communication ”” is added as an attribute of the anchor tag. This is for specifying a bearer, that is, a communication interface to be used when acquiring the content indicated by the URL, and is described by the creator of the _first HTML data 2271.

The URL to be displayed on the liquid crystal display 214 as a web page first when the WWW browser processing unit 216 is activated and the communication interface to be used are set in the event processing unit 217 in advance. The event processing unit 217 first passes these as link information to the content acquisition processing unit 218, and the HTML data acquired by the content acquisition processing unit 218 as an initial screen by the processing described later is the first data. It is assumed that ₁ HTML data 2271 is obtained.

FIG. 5 shows the contents of the link information stored in the link information storage unit corresponding to the first HTML. HTML analysis processing unit 219 shown in FIG. 2 is displayed on the web page of each link by processing the first HTML data 227 ₁ shown in FIG. 4 is described when loaded into WWW browser processing unit 216, after Link information composed of an anchor text and URL as a character string and a communication interface to be used is extracted. These are stored in the link information storage unit 220 in advance in association with the coordinates where the anchor text is displayed. This association is transmitted to the event processing unit 217. In the case of the example shown in FIG. 4, there is no particular description about the communication interface used for the “menu” link, so “no designation” is set. In the case of the communication interface used for the “notice” link, “first wireless communication” is described, and the description content is designated.

Now, with the first web page 226 ₁ as shown in FIG. 3 is displayed on the liquid crystal display 214 of the portable information terminal 201, the user is a new destination by pressing one point of the touch panel 215 Content shall be acquired. This processing is performed by the content acquisition processing unit 218 according to an instruction from the event processing unit 217 in the WWW browser processing unit 216 shown in FIG.

  FIG. 6 shows the flow of new content acquisition processing by selecting a link. The event processing unit 217 illustrated in FIG. 2 monitors pressing of the touch panel 215 (step S231). When the touch panel 215 is pressed (Y), the coordinate data of the pressed position is analyzed to check whether content acquisition is instructed (step S232). When the acquisition of content is instructed by pressing the coordinates of the area corresponding to any anchor text in FIG. 2 (Y), the coordinates are pressed with reference to the coordinates described above in the link information storage unit 220. Link information corresponding to the anchor text is acquired (step S233). For example, when the character string “menu” of the first web page in FIG. 3 is clicked, the URL “http://provider1.co” of the link information stored in the link information storage unit 220 in FIG. .Jp / menu.html ”and the communication interface“ unspecified ”to be used are acquired. The event processing unit 217 passes the acquired link information to the content acquisition processing unit 218 (step S234).

  When the content acquisition processing unit 218 receives the link information, the content acquisition processing unit 218 checks whether the communication interface is designated by the link information (step S235). When the communication interface is specified (Y), the content acquisition processing unit 218 is specified by using the communication interface specified by controlling the communication control unit 213 for the content acquisition request. The server is connected to the server where the URL exists using the HTTP protocol (step S236). If no designation is made (step S235: N), a communication interface to be used is determined based on the priority registered in the content acquisition processing unit 218 (step S237), and the communication interface is used. The communication control unit 213 is instructed to connect to the server (step S236). In step 237, the wireless communication interface with the highest priority is selected in order.

  If the connection to the server is successful (step S238: Y), the content acquisition processing unit 218 acquires the content as HTML data corresponding to the instructed URL from the server, and the HTML analysis processing unit 219 via the event processing unit 217. (Step S239). The HTML analysis processing unit 219 analyzes the received HTML data, determines the arrangement of contents included in the data, forms a web page, and displays it on the liquid crystal display 214 (step S240). And the communication interface designation | designated acquisition part 221 of the HTML analysis process part 219 performs the process which acquires link information from HTML data (step S241).

  If the connection to the server fails in step S238 (N), and the predetermined number of times as the upper limit of the connection attempt using the same communication interface has not been reached (step S242: N), the process proceeds to step S236. Go back and try connecting again. When the number of connection failures reaches a predetermined number (step S242: Y), the communication interface is not specified in step S234, and there is a communication interface that is not used to try to connect to the specified WWW server (Step S243: Y), the process returns to step S237, and a connection is attempted using a communication interface with a low priority. If the designation for the communication interface has been acquired in step S233 or if all the communication interfaces have been used even if no designation has been made (step S243: N), the process ends (return).

  FIG. 7 shows the flow of link information acquisition processing by the communication interface designation acquisition unit, and corresponds to step S241 in FIG. The communication interface designation acquisition unit 221 searches for an anchor tag, that is, a descriptive sentence “<A>” from the beginning of the HTML data received by the HTML analysis processing unit 219 in step S239 of FIG. Text and URL are acquired (step S251). Then, it is determined whether or not there is a description sentence in the format of “bearer =“ ”” as an attribute of the anchor tag (step S252). If it exists, it is determined whether or not the character string in the double quotation is valid for designating the communication interface by the own apparatus (step S253). Specifically, it is determined whether or not there is a character string in double quotations and specifies any one of the communication interfaces provided in the own apparatus.

  If it is valid (Y), the character string is acquired as the communication interface to be used for the designated communication interface (step S254). Then, the position of the anchor text of the web page displayed on the liquid crystal display 214 is associated with the coordinate data of the touch panel 215 (step S255), and the anchor text, the URL, and the communication interface to be used are stored in the link information storage unit 220. Store (step S256).

  If the tag attribute specifying the communication interface is not described in the anchor tag (step S252: N), or if the tag attribute is not valid (step S253: N), the communication interface to be used is “specified”. “None” is set (step S257), and the process proceeds to step S255. In step S256, “not specified” is stored as the communication interface used in the link information storage unit 220.

  If the anchor tag search has not reached the end of the HTML data (step S258: N), the process returns to step S251 to continue the search. When the search is completed up to the end of the HTML data and the extraction and storage of link information for all anchor tags is completed (step S258: Y), the process is terminated. When the HTML analysis processing unit 219 stores new link information in the link information storage unit 220, the previously stored link information is deleted. Alternatively, the link information storage unit 220 itself may delete the stored data based on the data amount and the stored time in the oldest order.

  Returning to FIG. 6, the description will be continued. When all the link information of the HTML data is stored in the link information storage unit 220 in the process of step S241 described with reference to FIG. 7, the process of acquiring new content by selecting the link ends, and the user touches the touch panel again. Wait for pressing (return). As described above, a new web page is displayed on the liquid crystal display 214 and the link information is stored in the link information storage unit 220.

The above process will be described with a specific example. "News" in the first web page 226 ₁ of the string and is clicked as shown in Figure 3. Then, the pressed position is notified to the event processing unit 217 shown in FIG. The event processing unit 217 searches the link information storage unit 220 in which the link information shown in FIG. 5 is stored for “notification” which is the corresponding anchor text. As a result, “http://carrier.ne.jp/notice.html” is acquired as the URL of the link destination, and “first wireless communication” is acquired as the communication interface to be used. Since “carrier.ne.jp” is the domain name of the first WWW server 205 ₁ in FIG. 1, the communication control unit 213 attempts to connect to the _first WWW server 205 1. Wireless communication antenna 204 ₁ is used. When the connection is successful, the content “/notice.html” is acquired from the _first WWW server 2051 as the second HTML data.

Assuming that the first network 202 ₁ cannot be accessed via the second network 202 ₂ shown in FIG. 1, it is possible to access the _first WWW server 205 ₁ using the second wireless communication antenna 204 _2. Can not. That is, the content “/notice.html” cannot be acquired even if the _second wireless communication antenna 204 ₂ is used. However, since the information “bearer =“ first wireless communication ”” is added as the attribute of the anchor tag, the communication interface (in this case, the first wireless communication antenna) as instructed by analyzing this is added. 204 ₁ etc.), it is possible to select an appropriate communication path and quickly acquire content.

FIG. 8 shows the contents of the second HTML data. In the second HTML data 227 ₂ , which is the content “/notice.html” acquired from the first WWW server 205 ₁ , three links are described by anchor tags. First, the anchor text is “New Arrival Information”, the link destination is the URL “http://carrier.ne.jp/whatsnew.html”, and “bearer =“ first wireless communication ”” is an attribute. It has been added. Second, the anchor text is “past content”, the link destination is the URL “http://archive.ne.jp/old.html”, and “bearer =“ second wireless communication ”” as an attribute. Is added. The third is that the anchor text is “news” and the link destination is the URL “http://news.co.jp/index.html”, and the attribute regarding the communication interface to be used is not particularly added.

In step S240 of FIG. 6, HTML analysis processing unit 219, the second analyzes the HTML data 227 _2, and displays to determine the alignment of the content included in the data constituting the web page on the liquid crystal display 214. Then, the link information is extracted and stored in the link information storage unit 220 by the process shown in step S241 of FIG.

FIG. 9 shows a screen of the second web page displayed on the display unit based on the second HTML data shown in FIG. The second of the web page 226 _2, the string "What's New" to underline is attached to the "past of contents" and "News" is displayed.

  FIG. 10 shows the contents of the link information stored in the link information storage unit corresponding to the second HTML data shown in FIG. The communication interface used for the “new arrival information” link is “first wireless communication”, the communication interface used for the “past content” link is “second wireless communication”, and “ The communication interface used for the “news” link is “not specified”.

Here, the display portion of the second web page 226 ₂ string "past contents" shown in FIG. 8 is further pressed. Then, as in the case of the first web page 226 _1, the pressed position of the touch panel 215 (FIG. 2) is notified to the event processing section 217. The event processing unit 217 searches the link information storage unit 220 for “past content” which is the corresponding anchor text. As a result, “http://archive.ne.jp/old.html” is acquired as the URL of the link destination, and “second wireless communication” is acquired as the communication interface to be used. Since “archive.ne.jp” is the domain name of the second WWW server 205 ₂ in FIG. 1, the communication control unit 213 tries to connect to the _second WWW server 205 ₂ . It will use the second wireless communication antenna ₂₀₄₂ that was specified at this time. If the connection is successful, it acquires the content "/old.html" as a new HTML data from the second WWW server 205 _2.

Via the first network 202 ₁ in FIG. 1 when the second can not access the network 202 _2, to the second access to the WWW server 205 ₂ using the first wireless communication antenna 204 ₁ The content “/old.html” cannot be acquired. However, in this embodiment, as described above, information “bearer =“ second wireless communication ”” is added as an attribute of the anchor tag. Therefore, by analyzing this and using the communication interface as instructed, it is possible to select an appropriate communication path and quickly acquire the content.

  As described above, the communication interface priority information in a predetermined format is added in association with the anchor text of the HTML data, and this is analyzed by the communication terminal that receives the HTML data, and the communication is executed according to the communication interface priority information. The creator can specify the communication interface to be used in the communication terminal. Specifically, an anchor tag attribute for designating a communication interface to be used in the form of extending HTML is defined, and a browser of the communication terminal analyzes this and instructs the communication control unit to use the communication interface. You only have to set it.

  An example based on the above-described embodiment will be described below. In this embodiment, WCDMA (Wideband Code Division Multiple Access) wireless communication and IEEE (the Institute of Electrical and Electronic Engineers) 802.11 wireless communication are used for portable information terminals. It is a mobile phone that supports.

FIG. 11 shows an outline of the configuration of the mobile phone communication system according to the embodiment. In the cellular telephone communication system 300, as corresponding to the portable information terminal 201 and the first network 202 ₁ and the second network 202 ₂ of the communication system 200 shown in FIG. 1, the portable telephone 301 is the PSTN A cellular phone network 302 and a LAN 303 that is an intranet built by a company exist. A WCDMA wireless base station 304 that performs wireless communication by the WCDMA system is connected to the mobile phone network 302, and a WCDMA antenna 305 provided in the mobile phone 301 performs wireless communication with the WCDMA wireless base station 304. ing. Further, a wireless LAN access point 306 that performs wireless communication by a wireless LAN method based on IEEE 802.11 is connected to the LAN 303, and a wireless LAN antenna 307 provided in the mobile phone 301 communicates with the wireless LAN access point 306. Is supposed to do.

Furthermore, the cellular phone network 302 and LAN303, respectively via the first gateway ₃₀₈₁ and the second gateway device 308 ₂ is connected to the Internet 309. A first WWW server 310 ₁ is connected to the cellular phone network 302, a second WWW server 310 ₂ is connected to the LAN 303, and a third WWW server 310 ₃ is connected to the Internet 309. The first of the WWW server 310 ₁ of the domain name has become a "www.carrier.ne.jp". The second of the WWW server 310 ₂ of the domain name has become a "local.carrier.ne.jp". Domain name of the 3 WWW server 310 ₃ has become a "www.provider1.co.jp".

The first gateway device 308 ₁ is the cellular phone network 302 is adapted to be freely accessible to the Internet 309 side, rejects the connection request from the Internet 309 side to the cellular telephone network 302 side for security purposes It is set to be. Therefore, it is not possible to access the first WWW server 310 ₁ on the cellular phone network 302 using wireless LAN antenna 307. Similarly, since the second gateway device 308 ₂ is also set to reject a connection request from the Internet 309 side to the LAN 303 side, the second WWW server 310 ₂ on the LAN 303 using the WCDMA antenna 305 is used. Can not access.

Mobile phone network 302 and WCDMA radio base station 304 and the first WWW server 310 ₁ and the first gateway device 308 ₁ connected thereto are those mobile operators are building. Further, the wireless LAN access point 306 and the second WWW server 310 ₂ and the second gateway device 308 ₂ connected thereto and LAN303 are those companies are building. It is assumed that the WCDMA wireless base station 304 and the wireless LAN access point 306 are installed at a relatively close distance, and the mobile phone 301 is in a place where the respective communication areas overlap.

FIG. 12 shows the configuration of the mobile phone in the present embodiment, and corresponds to FIG. The same parts as those in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted as appropriate. The cellular phone 301 includes a WCDMA control unit 311 that controls the WCDMA antenna 305 and a wireless LAN antenna 307 that correspond to the first and second wireless communication control units 211 ₁ and 211 ₂ in FIG. A wireless LAN control unit 312 that performs control is provided. Further, as corresponding to the liquid crystal display 214 and the touch panel 215 of FIG. 2, a liquid crystal panel unit 314 and a dial button unit 315 constituted by a plurality of button switches are provided. Further, the WWW browser processing unit 216 and the communication control unit 213 are the same as those in FIG. 2, and the WWW browser processing unit 216 executes the processing procedure described in FIG.

The mobile phone 301 having such a configuration acquires content from the first WWW server 310 ₁ , the second WWW server 310 _2, or the third WWW server 310 ₃ in FIG. 11 by selecting a link of HTML data. The case where it goes is explained. First, it is assumed that the content including the first HTML data is read into the browser and displayed on the liquid crystal panel unit 314 as the first web page.

FIG. 13 shows the screen of the first web page displayed on the liquid crystal panel unit. The first web page 326 _1, are displayed "News" and the string "menu" to underline is attached indicating that it is a link. When these character strings are clicked by operating the dial button unit 315, the content of the associated URL can be acquired.

FIG. 14 shows the contents of the first HTML data. Two links are described in the first HTML data 327 ₁ . The first is a normal link to which an anchor text “Menu” is given, and the link destination is URL “http://www.provider1.co.jp/menu.html”. The second is a link to which an anchor text “Notice” is given, and the link destination is URL “http://www.carrier.ne.jp/notice.html”. Communication interface priority information “bearer =“ wcdma ”” is added.

FIG. 15 shows the contents of the link information stored in the link information storage unit corresponding to the first HTML. The link information is obtained by extracting link information by the HTML analysis processing unit 219 when the first HTML data 327 ₁ is read by the WWW browser processing unit 216, and is used for the “menu” link. The interface is “not specified”, and the communication interface used for the “notification” link is “WCDMA”.

Here, it is clicked the first web page 326 ₁ of the string "News" shown in FIG. 13, to the acquisition of the corresponding content is requested. Then, the event of the click operation is notified to the event processing unit 217, and the event processing unit 217 determines which link has been clicked, and inquires the link information storage unit 220 for information regarding the link. As a result, link information associated with the anchor text “Notification” is acquired. That is, “http://www.carrier.ne.jp/notice.html” is acquired as the URL of the link destination, and “WCDMA” is acquired as the communication interface to be used. Then, the event processing unit 217 passes the link information to the content acquisition processing unit 218 to instruct acquisition of the corresponding content. The content acquisition processing unit 218 uses the WCDMA antenna 305 to connect to the communication control unit 213 to the first WWW server 310 _{1 in} FIG. 11 having the domain name “www.carrier.ne.jp”. Instruct. When the connection is successful, the content “/notice.html” is downloaded as the second HTML data from the _first WWW server 3101, and the second HTML data is passed to the HTML analysis processing unit 219.

At this time, even if the wireless LAN antenna 307 is used, the first WWW server 310 ₁ cannot be accessed, and the content “/notice.html” stored in the _first WWW server 310 ₁ is acquired. I can't. However, in this embodiment, information “bearer =“ wcdma ”” is added as an anchor tag attribute. Therefore, by analyzing this and using the communication interface as instructed, it is possible to select an appropriate communication path and quickly acquire the content.

FIG. 16 shows the contents of the second HTML data. In the second HTML data 327 ₂ , which is the content “/notice.html” acquired from the first WWW server 310 ₁ , three links are described by anchor tags. The first is that the anchor text is “news” and the link destination is the URL “http://www.provider1.co.jp/news.html”, and no attribute regarding the communication interface to be used is added. Second, the anchor text is “past article”, the link destination is “http://www.carrier.ne.jp/old.html”, and “bearer =“ wcdma ”” is added as an attribute. Has been. The third is that the anchor text is “Intranet”, the link destination is the URL “http://local.carrier.ne.jp/index.html”, and “bearer =“ wlan ”” is added as an attribute. Yes.

In step S240 of FIG. 6, HTML analysis unit 219 analyzes the second HTML data 327 _2, and displays to determine the alignment of the content included in the data constituting the Web page on the liquid crystal panel unit 314 . Then, the link information is extracted and stored in the link information storage unit 220 by the process shown in step S241 of FIG.

FIG. 17 shows the screen of the second web page displayed on the liquid crystal panel unit based on the second HTML data shown in FIG. The second of the web page 326 _2, the string "News" to underline is attached "past articles" and "intranet" is displayed.

  FIG. 18 shows the contents of link information stored in the link information storage unit corresponding to the second HTML data shown in FIG. The communication interface used for the “past article” link is “WCDMA”, the communication interface used for the “intranet” link is “WLAN”, and the communication interface used for the “news” link. Is “not specified”. That is, the HTML analysis processing unit 219 interprets that “bearer =“ wcdma ”” indicates the use of the WCDMA antenna 305 and “bearer =“ wlan ”” indicates the use of the wireless LAN antenna 307. It has become.

When the second web page 326 ₂ of FIG. 17 is displayed, further the string "Intranet" by operation of the user is clicked, a communication interface to be used in the same procedure is selected. Since the anchor text “Intranet” is associated with “WLAN” as a communication interface to be used, the wireless LAN antenna 307 is used to connect to the _second WWW server 3102 in FIG. Try. When the connection is successful, the content “/index.html” is acquired.

At this time, even if the WCDMA antenna 305 is used, the second WWW server 310 ₂ cannot be accessed, and the content “/index.html” stored in the _second WWW server 310 ₂ cannot be obtained. Can not. However, the information “bearer =“ wlan ”” is added as an attribute of the anchor tag, and by analyzing this and using the communication interface as instructed, an appropriate communication path is selected, and the content is promptly displayed. It is possible to get.

If the second web page 326 ₂ of the string "News" is as shown in FIG. 17 is clicked, the communication interface to be used is not specified in particular. This relevant server is a 3 WWW server 310 ₃ arranged on the Internet 309, also in the communication route using the WCDMA antenna 305, also in the communication route using the wireless LAN antenna 307, access can This is because. Therefore, if the connection fails using one of the wireless communication interfaces, it is possible to try again on the other side.

  As described above, according to the present embodiment, the communication terminal selects and uses one of a plurality of communication interfaces provided when performing communication. For this reason, it is possible to save the user from manually selecting a communication interface to be used. The communication interface specified by the communication interface priority information when analyzing the communication interface priority information specifying the communication interface to be used, described in association with the link in the HTML data, and acquiring the content of the corresponding link. Therefore, the communication interface can be selected based on the HTML data. In addition, by defining new anchor tag attributes for specifying the communication interface to be used in the form of extending HTML to the browser, and setting identifiers for various communication interfaces, it is easy to specify the communication interface on the content creation side. Can be standardized.

  In the present embodiment, the plurality of communication interfaces provided in the communication terminal communicate with each other through different communication paths. Therefore, the format of the communication interface priority information is defined in advance in association with each communication interface provided in the communication terminal, and is given priority on the content creation side in consideration of the network layout and environment of the entire communication system. It is possible to select an appropriate communication path by correctly adding communication interface priority information for specifying a communication interface to be used. In other words, by adding communication interface priority information that specifies the communication interface that can access each link destination, the communication terminal can identify the communication interface that can access the target server before connection, and wasteful connection Processing and cutting processing can be reduced. In recent years, wireless LAN devices conforming to the IEEE 802.11 standard have been commercially available at a low cost, and many companies and general users have established their own communication networks. Some of them are not connected to the Internet, and there are cases where a firewall is provided to prevent unauthorized access even if they are connected. When communication is performed using such a communication network, the communication terminal of the present invention having room for selecting a communication path is preferable. Further, it is possible to give a room for instructing a communication interface to be used for the next communication to the communication terminal that acquires the content to the content creator. As a result, it becomes possible for the content creator to construct a more convenient service such as reducing the burden on the user and realizing a detailed service, and to improve the security of the content.

  Furthermore, in this embodiment, even if server names collide between a plurality of different networks, by specifying a communication interface to be used, these can be distinguished and connected to download contents.

  In the embodiments and examples described above, the case where the communication terminal includes two wireless communication interfaces has been described. However, the case where only the wired communication interface is provided, or the wireless communication interface and the wired communication interface are mixed. Needless to say, the present invention can be applied to the above-mentioned cases. Of course, the present invention can be applied to a case where three or more communication interfaces are provided. In addition, as a specification of a communication interface to be used, a plurality of communication interfaces may be specified, and a priority order may be specified. Specifically, for example, when identifiers of a plurality of communication interfaces are described by separating them with commas in a character string within a double quotation of a part described by “bearer =“ ”, the priority is higher in order from the front. And analyze. In this case, connection is attempted using a high-priority wireless communication interface, and when the connection fails a predetermined number of times, the process of switching to the next higher-priority wireless communication interface and attempting connection is repeated. Further, the format of the communication interface priority information is not limited to “bearer =“ ”, but may be any information that can be distinguished from other anchor tag attributes and can determine the designated communication interface. In addition to the type of communication interface, ESSID (Extended Service Set Identifier) information as an identifier on the network of a wireless base station or access point that directly communicates may be associated.

  Further, although the touch panel and the button switch are adopted as the means for receiving the anchor text selection, the present invention is not limited to this, and other input means that can specify the display position may be used. Further, the link information storage unit may not be managed by individual communication terminals, but may be provided on the server side that these communication terminals can access in common. In this case, the HTML analysis processing unit and the event processing unit may access this server to exchange information, and the link information stored in the link information case may be shared by a plurality of communication terminals. In this case, the HTML analysis processing unit stores the URL and the communication interface to be used in the link information as a pair, and transmits the correspondence between the coordinate data of the input means of the own device and the URL of each link to the event processing unit. Like that. When the event processing unit receives the content acquisition request from the input unit, the event processing unit transmits the URL to the server, and the server acquires the communication interface to be used from the link information storage unit provided for itself based on the received URL. The URL is sent back to the event processing unit of the communication terminal that has sent the URL. For accessing the server, a communication interface used for content acquisition may be used, or another wired or wireless communication means may be used.

  The communication interface specification acquisition unit acquires the specification of the communication interface when the HTML analysis processing unit analyzes the HTML data. However, after the URL is selected, the communication interface specification acquisition unit reads from the description of the anchor tag corresponding to the HTML data. May be. In this case, the communication interface to be used is not stored in the link information storage unit. In addition, the communication interface priority information is added in the form of being embedded as an attribute in the HTML anchor tag, but may be applied to other HTML tags that specify content acquisition by URL specification such as IMG, FORM, OBJECT, and EMBED. Further, in addition to designating content acquisition, it may be applied to an HTML tag that designates transmission of data to a specific URL from the communication terminal side, for example, when the ACTION attribute is added to the FORM. In this case, a communication interface used for data transmission from the communication terminal side can be designated on the content creator side, and it is possible to improve security by using a safer communication path.

  Further, although the case where it is applied to HTML has been described, it is needless to say that the present invention can also be applied to other document structure description languages such as XHTML (eXtensible HyperText Markup Language) that can specify content acquisition by URL specification. Instead of the WWW browser, the present invention may be applied to other software having a function of displaying the data described in the document structure description language and receiving a link selection. In addition, even if the communication methods of multiple communication interfaces are the same, when communication is set via different communication paths, such as communication with different radio base stations and access points. Needless to say, this is also applicable.

1 is a system configuration diagram showing an outline of a configuration of a communication system in an embodiment of the present invention. It is a block diagram showing the structure of the portable information terminal as a communication terminal in embodiment. It is a top view showing the screen of the 1st web page displayed on the display part in an embodiment. It is explanatory drawing showing the content of the 1st HTML data in embodiment. It is explanatory drawing showing the content of the link information stored in the link information storage part corresponding to 1st HTML in embodiment. It is a flow chart showing the flow of processing at the time of acquiring new contents by selection of a link in an embodiment. It is a flowchart showing the flow of the link information acquisition process by the communication interface designation | designated acquisition part in embodiment. It is explanatory drawing showing the content of the 2nd HTML data in embodiment. It is a top view showing the screen of the 2nd web page displayed on a display part based on the 2nd HTML data in an embodiment. It is explanatory drawing showing the content of the link information stored in a link information storage part corresponding to the 2nd HTML data in embodiment. 1 is a system configuration diagram showing an outline of a configuration of a mobile phone communication system in an embodiment. It is a block diagram showing the structure of the mobile telephone in an Example. It is a top view showing the screen of the 1st web page displayed on the liquid crystal panel part in an example. It is explanatory drawing showing the content of the 1st HTML data in an Example. It is explanatory drawing showing the content of the link information stored in the link information storage part corresponding to 1st HTML in an Example. It is explanatory drawing showing the content of the 2nd HTML data in an Example. It is a top view showing the screen of the 2nd web page displayed on a liquid crystal panel part based on the 2nd HTML data in an example. It is explanatory drawing showing the content of the link information stored in a link information storage part corresponding to the 2nd HTML data in an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 200 Communication system 201 Portable information terminal 202 Network 203 Wireless base station 204 Wireless communication antenna 205, 310 WWW server 211 Wireless communication control part 213 Communication control part 214 Liquid crystal display 215 Touch panel 216 WWW browser process part 217 Event process part 218 Content acquisition process part 219 HTML analysis processing unit 220 Link information storage unit 221 Communication interface designation acquisition unit 226, 326 Web page 227, 327 HTML data 300 cellular phone communication system 301 cellular phone 302 cellular phone network 303 LAN
304 WCDMA radio base station 305 WCDMA antenna 306 Wireless LAN access point 307 Wireless LAN antenna 308 Gateway device 309 Internet 311 WCDMA control unit 312 Wireless LAN control unit 314 Liquid crystal panel unit 315 Dial button unit

Claims (9)

A plurality of communication means for communicating via different communication paths,
Markup language discrimination means for discriminating the data acquired using any one of the plurality of communication means in a predetermined markup language;
Link information extracting means for decoding the markup language determined by the markup language determining means and extracting link information for linking to an address on a communication network;
Communication means selection information acquisition means for acquiring communication means selection information for selecting a communication means to be used when accessing an address indicated by each link information from each link information extracted by the link information extraction means,
Corresponding communication means determination means for determining which of the plurality of communication means corresponds to each communication means selection information acquired by the communication means selection information acquisition means;
A communication means / address correspondence storage means for storing the communication means determined by the corresponding communication means determination means in association with each address on the communication network represented by the link information;
An address designating means for designating a communication destination address;
Search means for searching the communication means / address correspondence storage means at an address designated by the address designation means;
A communication means selecting means for accessing the address designated by the address specifying means using the communication means when any one of the plurality of communication means is searched by the search means; A communication terminal characterized by.   When the correspondence communication means determination means determines two or more communication means for an address on one communication network, the communication means / address correspondence storage means associates the two or more communication means with one address. The communication terminal according to claim 1, wherein the communication terminal is stored.   2. The communication terminal according to claim 1, wherein the communication means / address correspondence storage means is arranged on a server capable of communicating with any of the plurality of communication means.   2. The communication terminal according to claim 1, wherein the communication means / address correspondence storage means is built in the own apparatus.   2. The communication according to claim 1, further comprising a priority setting unit for setting a priority for a communication unit used by the communication unit selection unit when the search unit searches for two or more communication units. Terminal.   When the search means does not search any communication means, the communication means selection means uses the plurality of communication means in a predetermined order to access the address designated by the address designation means. The communication terminal according to claim 1, wherein:   When the communication means selection information specifies one or more communication means to be used for communication with priority added, the communication means selection means selects any of the plurality of communication means according to the priority. The communication terminal according to claim 1, wherein the communication terminal is a means for using the above.   At least one of the plurality of communication means is a communication means for performing communication by a wireless LAN compliant with the IEEE 802.11 standard, and designates a communication means for performing communication using the wireless LAN in the communication means selection information. Further, access point designation information as information for designating a wireless LAN access point to be connected is added to the communication means selection information, and the communication means selection means uses a communication means for performing communication using this wireless LAN. 2. The communication terminal according to claim 1, wherein the communication terminal is connected to a wireless LAN access point indicated by corresponding access point designation information to access an address designated by the address designation means. Markup language determination step for determining, when data acquired using any one of a plurality of communication means that communicate via different communication paths provided in a communication terminal is configured in a predetermined markup language When,
A link information extraction step of extracting link information for decoding the markup language determined in this markup language determination step and linking to an address on a communication network;
From each link information extracted in this link information extraction step, a communication means selection information obtaining step for obtaining communication means selection information for selecting a communication means to be used when accessing an address indicated by each link information;
A corresponding communication means determination step for determining which of the plurality of communication means corresponds to each of the communication means selection information acquired in the communication means selection information acquisition step;
A storage step of associating each of the communication means determined in the corresponding communication means determination step with each of the addresses on the communication network represented by the link information and storing them in the communication means / address correspondence storage means;
An address specifying step for specifying the address of the communication destination;
A search step of searching the communication means / address correspondence storage means at the address specified in the address specifying step;
A communication means selection step for accessing the address designated in the address designation step by using the communication means when any one of the plurality of communication means is retrieved in the retrieval step. An address access method for a communication terminal characterized by the above.

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