JP2008071324A - Content distribution system for information terminal in which calculation resource and communication resource are restricted - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve technology for converting the contents of a Web page or the like into contents for a personal digital assistant whose calculation performance and communication performance are restricted and distributing the converted contents. <P>SOLUTION: The personal digital assistant 20 is connected to the Internet 50 to which a content conversion server 10, a content distribution server 30 and an advertisement management server 40 are connected, an instruction for acquiring contents stored in the content distribution server 30 is transmitted to the content conversion server 10, the content conversion server 10 acquires the contents from the content distribution server 30 and converts the contents into operatable imaged contents 21, and then the content conversion server 10 acquires a list of advertisement from the advertisement management server 40 and transmits contents obtained by embedding the list of advertisement into the operatable imaged contents 21 to the personal digital assistant 20. The personal digital assistant 20 displays the contents. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a content distribution system for converting and transmitting content for a normal information terminal for an information terminal with limited computing resources and communication resources.

  There is a strong demand for browsing documents and Web pages (hereinafter, the documents and Web pages are collectively referred to as contents) in a portable information terminal such as a mobile phone as on a personal computer.

  A portable information terminal has limited capabilities compared to a personal computer in terms of screen resolution, calculation capability, communication speed, power consumption, etc., and a content browsing system using the same technique as a normal information terminal such as a personal computer If it is realized, it becomes a system that is difficult to use and stressful.

  A device called a full browser has been developed as a device for browsing Web pages on a portable information terminal in the same manner as a personal computer. In the full browser, various devices are provided for displaying a web page for a personal computer on a small screen of a mobile terminal. For example, there are a mouse cursor, a screen enlargement / reduction function, and an image data reduction function. The mouse cursor function improves access to parts of the content. For example, it facilitates access to links in web pages. The enlargement / reduction of the screen improves the visibility on a small screen of the mobile terminal.

  A full browser is wasteful because it uses the same method as a personal computer when displaying a web page for a personal computer. For example, when acquiring a Web page including an image from a Web server, the Web page is acquired, then the content of the Web page is analyzed, and an image included therein is acquired. For example, when a web page includes three images, it is necessary to try to connect to the web server four times. The connection start process is a process with a high load among the communication processes, and as a result, the usability of the full browser is deteriorated.

  The problem to be solved by the present invention is to realize content browsing similar to a normal information terminal while reducing the calculation load and communication load by converting the content for an information terminal having limited capability. Is to realize a system to do this.

Means for Solving the Problems and Effects of the Invention

  In order to efficiently distribute content to a mobile phone, it is important to reduce the capacity of the content and reduce the number of connections to the server. That is, the content to be transmitted is converted into content with as little capacity as possible, and sent with a single connection.

A Web page is a content including a plurality of contents such as text contents, image contents, and multimedia contents, but the viewer looks like a single image.
By converting a Web page into a single image, it is possible to reduce the content capacity by reducing the Web page to an image size suitable for a mobile phone, thereby reducing the calculation load and communication load of the information terminal. It can be reduced.
Web page imaging is possible with existing technology.

When browsing a Web page on a personal computer, a specific operation is performed on a certain part, thereby changing the state of the content or switching to another content. This is called a content event. For example, when a part called a link is clicked, the page is switched to another Web page described in the link.
Simply converting a Web page into an image does not include an event such as a link, and is not sufficient for content distribution. Therefore, event information is extracted from the content.

  The content to be converted is displayed on a browsing device on a normal information terminal, and a JavaScript program is executed on the browsing device to extract the coordinates where the event occurs and the processing contents of the event from the content. The processing contents of coordinates and events can be extracted.

Since the image and event information are separated, the image and event information needs to be transmitted and re-implemented on the browsing device on the content display target information terminal.
A method of sending an image and an event with separate connections and performing event processing with an appropriate program on the mobile terminal, a method of sending an image and an event with the same connection and performing event processing with an appropriate program on the mobile terminal, and an image Although the method of sending the event and the program for processing the event through the same connection is conceivable, the latter is realized from the viewpoint of minimizing the number of connections.
A collection of images and events in one file is called “operable imaging content”. The operable imaged content may include a program. By including the program, there is an advantage that the behavior of the imaged content that can be operated can be changed.

  As a technique for collecting images, events, and programs into one file, the Flash technique can be used as an existing technique. Since the Flash technology can be used on many portable terminals, it is convenient to widely spread application systems using this technology, but other alternative technologies such as Java technology may be used.

Hereinafter, the content distribution system of the present invention will be described in detail using embodiments.
FIG. 1 is a configuration diagram of an information distribution system according to the present embodiment.
The content distribution system of the present embodiment is configured by connecting the portable information terminal 20 to a communication line 50 to which the content conversion server 10, the content distribution server 30, and the advertisement management server 40 are connected. The communication line 50 is preferably an Internet communication network.

  The content conversion server 10 has a function of acquiring the content 32 from the content distribution server 30 and converting the content 32 into an operable imaged content 21, and distributes the operable imaged content 21 to the portable information terminal 20.

  The portable information terminal 20 is used by a viewer and displays operable content 21 on a display.

  The content distribution server 30 includes a storage device 31 that stores content 32 such as Web pages. The content distribution server 30 can distribute the requested content 32 via the communication line 50.

  The advertisement management server 40 includes a storage device 41 for storing an advertisement list, and distributes the advertisement list in response to a request from the content conversion server 10.

FIG. 2 is a block diagram illustrating the content distribution system according to the present embodiment from the viewpoint of software.
In the content distribution system of the present embodiment, the content conversion server 10 including the imaged content base program 11, the content distribution server 30 including the content 32, and the advertisement management server 40 including the advertisement list 42 are connected to each other. And the portable information terminal 20 are connected. The content conversion server 10, the content distribution server 30, and the advertisement management server 40 are preferably constructed on independent computers, but a plurality of servers may be integrated into one computer.

  When the content conversion server 10 requests the content 32 from the portable information terminal 20, the content conversion server 10 acquires the content 32 from the content distribution server 30. The obtained content 32 is imaged using a function of the operating system (for example, Mac OS X WebKit library), and scaled to a size suitable for display on the portable information terminal 20.

  The content conversion server 10 acquires the coordinates and type of the event by displaying the content 32 and executing the JavaScript program for acquiring the event information in order to acquire the information related to the event of the content 32. Events include links and forms. The display here may be displayed on an actual screen, or may be virtually displayed on the memory of the content conversion server 10 or the like.

  The content conversion server 10 stores the image and event coordinates and types of the content 32, the advertisement list 42 acquired from the advertisement management server 40, and the imaged content platform program 11 for operating them as a Flash file or a Java archive file. Combine to get operable imaging content. For the combination, a standardly available Flash compiler or Java compiler can be used.

  The advertisement list 42 is a list of advertisement locations (URLs) and times for displaying advertisements, and the portable information terminal 20 controls the advertisements to be displayed and the time according to the advertisement list 42 so that advertisements can be displayed at predetermined times. The effect of appearing or disappearing can be obtained.

It is a block diagram of the content delivery system in this invention. It is a block diagram explaining the content delivery system in this invention from the surface of software.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Content conversion server 11 Imaging content base program 20 Portable information terminal 21 Operable imaging content 30 Content distribution server 31 Content storage storage device 32 Content 40 Advertisement management server 41 Advertisement list storage device 42 Advertisement list 50 Communication Line

Claims (3)

From the step of converting the content into an image, the step of extracting the event in the content, the imaged content and the extracted event in order to comfortably browse the document or the Web page on the browsing device like a personal computer A content distribution system comprising a step of generating lightweight content for a browsing device, and a content distribution step for transmitting the converted content via a network. The event information extraction system according to claim 1, wherein the event occurrence position on the content converted into an image is calculated independently of the browsing device. Sendable content inquiry step from mobile terminal, push reply of presence / absence of content that can be sent from content distribution server, and sendable content to mobile terminal for push delivery to mobile terminal An active content distribution system for mobile terminals, comprising:

Images