JP2009043226A - Display method and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a user's operation waiting time occurs during page transition when a plurality of content exists because many thumbnail images have to be generated during displaying content on a page with many images in the conventional manner to take time till the completion of display. <P>SOLUTION: When the content is read, only necessary images and sentences on a first page are read, and images on the second and subsequent pages when do not have to be displayed soon except the necessary images and sentences are replaced with an image of a small amount of data and read (step AS1 to AS4). While the user looks at the page after completing the display on the first page of the content, A sequential order is attached to a deeply related item (page) first, the image of a small amount of data is replaced with the original image and read (step AS5 and AS6), the original image is displayed when the user tries to look at another item (page) (step AS7). The image that becomes unnecessary to be displayed is hidden so as not to be seen. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display method and a display device, and more particularly, to a display method and a display device for displaying multimedia contents such as images and sounds, and contents such as menus and help items with many items.

  In recent years, with the spread of personal computers (hereinafter referred to as personal computers) to ordinary households, the Internet has become rapidly accessible. In addition to personal computers, electronic devices with functions that can be connected to the Internet, such as game consoles and digital broadcast receivers, have also been found in the market. Many mobile phones use content on the Internet, and it can be said that the Internet has permeated our lives. Shopping online on online shopping sites and exchanging emails with friends using mobile phones has become a natural sight in our daily lives.

  With the development of the Internet, most companies operate their own websites. Most of the contents on the Internet are described in HTML (Hyper Text Markup Language). This is because it is relatively easy to create and has a high degree of freedom of expression. Therefore, an increasing number of individuals create websites written in HTML. Blogs are also popular as an easy way to run a website.

  Blogs and websites often use illustrations and photos. This is because, compared to websites that are mainly composed of text, images can be used to create beautiful appearances and create easy-to-understand content, allowing for various expressions. Currently, most websites use images. In addition to images, you can see a lot of content using audio files and video files, and it looks better than content that consists only of text, and you can expect advertising effects, so more sites are introducing Yes.

On the other hand, as a function of the personal computer, there are several buttons or images and character strings arranged on the screen, and the function of displaying the contents of related items by pressing or focusing the button etc. by the user is well known. It is often used to display items with many items such as menus and help. In addition, image management software used for image editing, such as digital cameras, can also display functions such as displaying the original image by selecting an image thumbnail. By creating content with such a layout, there are advantages such that a large area can be allocated to the content itself, such as explanation, and that it is easy to move to other content by pressing a button or the like.

  FIG. 23 shows an example of a general menu. FIG. 23A shows that the right image is displayed when the A button displayed on the screen of the personal computer is focused. FIG. 23B shows that when the A button is pressed (clicked), the explanatory text is displayed simultaneously with the image shown in FIG. In FIG. 23C, a plurality of thumbnail images, which are small-area images, are arranged in the vertical direction on the left side of the screen. When any one of the thumbnail images is selected, a large-area screen region on the right side is displayed. It shows that the selected thumbnail image is displayed.

  As an advantage of content such as this menu, it is possible to realize a screen that makes it easy to grasp the overall configuration by displaying the title of the content and thumbnail images side by side, and it is easy to understand the contents by using many images There are points that can be created, and things that are beautiful to the eye can be created. In particular, a familiar example is realized using HTML for a device equipped with a browser. Nowadays, it is often seen that companies publish them on the Internet by creating content by organizing the instructions for their products and the procedures until using their products into a menu-like format.

  These contents have a high degree of freedom, such as using many images or linking to other pages, giving users an easy-to-understand and familiar impression, and creating intuitive and easy-to-understand instructions. In the future, it is expected to be introduced in home appliances such as digital broadcast receivers equipped with browsers.

  However, the advantage of being able to use images is fully utilized for users who view content on a device with a large memory capacity, such as a personal computer, but for users viewing content on a device with a small memory capacity, such as a digital broadcast receiver. May not necessarily be an advantage.

  In general, when a large number of images are used or when a large image is used, the amount of data in the content becomes large. Also, the memory installed in a digital broadcast receiver or the like has a smaller capacity than the memory of a personal computer that is currently on the market. This is because digital broadcast receivers often do not use a large-capacity memory to reduce production costs. For this reason, the amount of data stored in the memory when reading the content is smaller than that of a personal computer, and in the case of content with a large amount of data, it takes time to complete the display.

  For example, a considerable amount of images are required when creating a user-friendly instruction manual. When several images are put in one piece of content, it takes time to complete the display of the content because the digital broadcast receiver has a small memory capacity. There is a method to create a link for each image without putting the image in one piece of content, but this method is good in terms of readability of the content contents on the screen of the digital broadcast receiver However, as the number of images increases, the user's operation and waiting time increase, which makes it unusable.

  Even on the Internet, content that takes time to display can be avoided. As shown in FIG. 24, when browsing content continuously on the Internet using a personal computer (PC) 12, it is connected to the server 11 via the Internet, and the content data placed on the server 11 is read to the PC 12. Come.

  On the other hand, when trying to display a page that uses a lot of multimedia files such as images, there is a problem that the amount of data is larger than that of a text-centered page and it takes time to complete the display. Therefore, the user is held until the display is completed, and smooth surfing is not possible. Or, if it takes too much time to complete the page display, the user often goes to see another page until the display is completed, which is disadvantageous to the content production side.

  In addition, when there is no linked multimedia file, there is a problem that nothing is displayed in the corresponding part depending on the browser. Therefore, even if there is an image there, the user may not be able to obtain the target information or sufficient information because nothing is displayed. In addition, there is a problem in that the layout may be corrupted depending on the page and the appearance of the page may be impaired.

  In general, when a multimedia file with a large amount of data such as a large image is used, the amount of data when reading the content also increases. This is particularly noticeable in video. In the case of a device with a small memory capacity such as a mobile phone, it takes time to complete display of content with a large amount of data. If the amount of data is too large, the display may not be completed due to insufficient memory capacity. However, if the number of multimedia files to be included in one piece of content is reduced, the time until the display is completed can be shortened, but the degree of freedom on the content production side is reduced.

  In this way, even on the Internet, content that takes a long time to display is avoided, and there are many sites that try to reduce the amount of data as much as possible, but most of them are described on the assumption that they will be viewed on a personal computer. As a result, memory capacity may be insufficient when browsing on mobile phones and other electronic products. Also, if the amount of images and texts is reduced to reduce the amount of data, the content intelligibility and quality may be impaired.

Also, even if the user intends to create an easy-to-understand content using an image, when the content is actually read and displayed, the content may not always be easy to understand for the user.
For example, the image may be unclear or the color and size of characters may be difficult to read. This often occurs due to the difference between the environment in which the image is created and the environment of the device that actually displays it.

  From the above, in order to display the content, there are few operation procedures that the user has to perform, and the content that can shorten the reading time at the time of page transition and the time until the display is completed without impairing the content It is desirable to display. It is also desirable to display the content with clear images and clear characters.

  Therefore, an image with a small amount of data, such as a thumbnail image or a compressed image, is generated from the original image data, and after the image is displayed, the original is read while the user is viewing the content, and is replaced and displayed. Conventionally, a method for improving the display speed is known (see, for example, Patent Document 1).

  In this conventional display method, as shown by A in FIGS. 25 (A) and 25 (C), for example, compared to the case of sequentially reading and displaying, for example, three input images, FIG. 25 (B). As shown by B in FIG. 5C, first, an image with a small amount of data is generated from the original image data, and the original image is read while the user is viewing the content. Since it is replaced and sequentially displayed, the waiting time of the user can be shortened.

  In addition, the information about the color characteristics of the receiving terminal is acquired, the content is color-converted to match the color characteristics of the receiving terminal, and the color-converted content is delivered to the receiving terminal to be displayed on the receiving terminal side. It is known to make the color of content close to the color of content on the server side (see, for example, Patent Document 2).

JP 2006-221406 A JP 2002-218262 A

However, in the display method described in Patent Document 1, it is necessary to perform processing for generating thumbnail images. When displaying the contents of a page with many images, many thumbnail images must be generated. It takes time. In addition, the display method for one piece of content can be accelerated by the display method described in Patent Document 1, but when there are a plurality of pieces of content, rereading of data occurs for each piece of content, and the user operation waiting time at the time of page transition The problem that can be done is not solved.
Further, in the method described in Patent Document 2, only the color can be approximated to the server-side content, and is insufficient when the content image is unclear. An output profile corresponding to a playback device such as a receiving terminal needs to be set in advance, and cannot be changed by the user's intention.

  The present invention has been made in view of the above points, and when displaying content, a multimedia file such as an image is temporarily replaced with an image stored in the main body, thereby displaying the time until the content display is completed. It is an object to provide a display method and a display device that can be shortened.

Another object of the present invention is to reduce the time for reading content and the time for switching between contents when viewing contents such as menus and help items with many items on a device with a small memory capacity for screen display. To provide a display method.
Still another object of the present invention is to provide a display method and a display device that enhance the convenience of the user by making the content image displayed on a playback device such as a receiving terminal clear and easy to view.

In order to achieve the above object, a first invention is a display method by an electronic device equipped with a browser having a function of displaying a page of acquired content.
Of the acquired content pages, the data of the first page including the image file is read into the buffer memory, and among the acquired content pages, the second and subsequent pages including the image file are read. The first step of replacing the image file of the page with the image data whose data amount is smaller than that of the image file and temporarily reading it into the buffer memory, and all the pages after the second page including the acquired content image file For the image file, the completion of the reading of the first page data is determined by reading the image data into the buffer memory whose data amount replaced in the first step is smaller than that of the image file, and the first page data is displayed. The second step to be displayed on the display and the display on the display During the display period of the data of the first page of the content, the third step of sequentially reading the data of the second and subsequent pages including the image file into the buffer memory, and the reading of the data into the buffer memory at the third step The data of any page among the data of the second and subsequent pages that contain the read image file is read from the buffer memory at an arbitrary timing and displayed on the display unit, and until then displayed on the display unit The data of a certain page includes a fourth step of switching to non-display.

  In the present invention, an image of each page of a multi-page content including an image file is displayed on an electronic device having a memory having a smaller capacity than that of a memory mounted on a personal computer and equipped with a browser. For the second and subsequent pages including the image file among the acquired content pages, the buffer file is replaced by replacing the image file of that page with image data having a smaller data amount than the image file. By reading in, the period until the data display of the first page of content is completed can be shortened compared to the case where the data of all the pages is read at once and displayed. Further, according to the present invention, the data of the second and subsequent pages including the image file can be sequentially read into the buffer memory during the data display period of the first page of the content.

In order to achieve the above object, the second invention is a display device that once reads data of a page including an image file among pages of arbitrary content into a buffer memory and displays the data on a display unit. And
Of the acquired content pages, the data of the first page including the image file is read into the buffer memory, and among the acquired content pages, the second and subsequent pages including the image file are read. The first data reading means that replaces the image file of the page with image data whose data amount is smaller than that of the image file and temporarily reads it into the buffer memory, and the second and subsequent pages including the image file of the acquired content With respect to the image files of all pages, the completion of reading of the data of the first page is determined by reading into the buffer memory the image data whose data amount replaced by the first data reading means is smaller than that of the image file. Display control means for displaying page data on the display unit; Second data reading means for sequentially reading the data of the second and subsequent pages including the image file into the buffer memory during the display period of the data of the first page of the content displayed on the display unit; Data of any page among the data of the second and subsequent pages containing the image file read into the buffer memory by the second data reading means is read from the buffer memory at an arbitrary timing and displayed on the display unit. And switching means for switching to non-display of the data of the page which has been displayed on the display unit until then.

In order to achieve the above object, a third invention is a display method by an electronic device equipped with a browser, which has a function of displaying a multimedia file acquired from an arbitrary server via a network.
A first step of acquiring a multimedia file from an arbitrary server, a second step of determining the type of the acquired multimedia file, and a plurality of types of multimedia files are displayed in a one-to-one correspondence. The type identification image indicating the type of the multimedia file determined in the second step is selected from the data holding unit that holds in advance a plurality of type identification images having a smaller data amount than the image of the multimedia file to be A third step, a fourth step of generating a display page based on the type identification image selected in the third step, and displaying the display page on the display unit, and a display period of the display page A fifth step of reading the multimedia file data obtained in the first step into the buffer memory; and a buffer After data reading completion multimedia files to memory, and hides the display page, and, characterized in that it comprises a sixth step of switching the display data of the multimedia file read from the buffer memory.

  According to the present invention, when displaying a page using a multimedia file, a display page generated based on the type identification image is displayed rather than the image of the multimedia file originally intended to indicate the type of the multimedia file. The multimedia file data can be read into the buffer memory during the display period of the display page.

In order to achieve the above object, the fourth invention provides a one-to-one correspondence between a function for displaying a multimedia file acquired from an arbitrary server via a network on a display unit and a plurality of types of the multimedia file. In response to the above, a display device using an electronic device equipped with a browser, including a data holding unit that holds in advance a plurality of type identification images whose data amount is smaller than the image of the multimedia file that is originally intended to be displayed. And
Obtaining means for obtaining the multimedia file from the arbitrary server via the network;
Determining means for determining the type of the acquired multimedia file;
Selecting means for selecting the type identifying image indicating the type of multimedia file determined by the determining means from the data holding unit;
Display control means for generating a display page based on the type identification image selected by the selection means, and displaying the display page on the display unit;
Read control means for reading the data of the multimedia file acquired by the acquisition means into a buffer memory during the display period of the display page;
And switching means for making the display page non-displayed and switching the data of the multimedia file read from the buffer memory to display after the completion of data reading of the multimedia file to the buffer memory. And

In order to achieve the above object, a fifth invention is a display method by an electronic device equipped with a browser having a function of displaying a multimedia file acquired from an arbitrary server via a network,
A first step of obtaining the multimedia file from the arbitrary server;
A second step of determining the type of the acquired multimedia file;
From the data holding unit that holds a plurality of type identification images having a data amount smaller than the image of the multimedia file originally intended to be displayed in a one-to-one correspondence with the plurality of types of the multimedia file. A third step of selecting the type identification image indicating the type of multimedia file determined in step 2;
A fourth step of generating a display page based on the type identification image selected in the third step and displaying the display page on a display unit;
During the display period of the display page, the multimedia file data is filtered while the multimedia file data acquired in the first step is being read into the buffer memory, A fifth step of completing the memory;
And sixth step of switching the display of the multimedia file data read from the buffer memory to non-display after the storage of the data of the multimedia file in the buffer memory is completed. It is characterized by that.

In order to achieve the above object, a sixth invention is a display method by an electronic device equipped with a browser having a function of displaying a multimedia file acquired from an arbitrary server via a network,
A first step of obtaining the multimedia file from the arbitrary server;
A second step of determining the type of the acquired multimedia file;
From the data holding unit that holds a plurality of type identification images having a data amount smaller than the image of the multimedia file originally intended to be displayed in a one-to-one correspondence with the plurality of types of the multimedia file. A third step of selecting the type identification image indicating the type of multimedia file determined in step 2;
A fourth step of generating a display page based on the type identification image selected in the third step and displaying the display page on a display unit;
A fifth step of storing data of the multimedia file acquired in the first step in a buffer memory during a display period of the display page;
A sixth step of hiding the display page and switching the multimedia file data read from the buffer memory to display after the storage of the data of the multimedia file in the buffer memory is completed;
A seventh step of performing a filtering process on the data of the displayed multimedia file.

  In order to achieve the above object, according to a seventh aspect, in the third, fifth, or sixth aspect, the data holding unit includes an error type in addition to the plurality of type identification images. Is stored in advance, and when the multimedia file data cannot be read from the buffer memory in the sixth step, the error type identification image indicating the error type is stored in the error type identification image. The method further includes a seventh step of reading from the data holding unit and replacing the display page displayed on the display unit.

In order to achieve the above object, according to an eighth aspect of the present invention, there is a one-to-one correspondence between a function for displaying a multimedia file acquired from an arbitrary server via a network on a display unit and a plurality of types of the multimedia file. In response to the above, a display device using an electronic device equipped with a browser, including a data holding unit that holds in advance a plurality of type identification images whose data amount is smaller than the image of the multimedia file originally intended to be displayed. And
Obtaining means for obtaining the multimedia file from the arbitrary server via the network;
Determining means for determining the type of the acquired multimedia file;
Selecting means for selecting the type identifying image indicating the type of multimedia file determined by the determining means from the data holding unit;
Display control means for generating a display page based on the type identification image selected by the selection means, and displaying the display page on the display unit;
During the display period of the display page, the multimedia file data is filtered while the multimedia file data acquired by the acquisition unit is being read into the buffer memory, and then stored in the buffer memory. Control means to complete;
And switching means for making the display page non-displayed and switching the data of the multimedia file read from the buffer memory to display after the completion of data reading of the multimedia file to the buffer memory. And

In order to achieve the above object, the ninth invention provides a one-to-one correspondence between a function for displaying a multimedia file acquired from an arbitrary server via a network on a display unit and a plurality of types of the multimedia file. In response to the above, a display device using an electronic device equipped with a browser, including a data holding unit that holds in advance a plurality of type identification images whose data amount is smaller than the image of the multimedia file that is originally intended to be displayed. And
Obtaining means for obtaining the multimedia file from the arbitrary server via the network;
Determining means for determining the type of the acquired multimedia file;
Selecting means for selecting the type identifying image indicating the type of multimedia file determined by the determining means from the data holding unit;
Display control means for generating a display page based on the type identification image selected by the selection means, and displaying the display page on the display unit;
Read control means for reading the data of the multimedia file acquired by the acquisition means into a buffer memory during the display period of the display page;
Switching means for making the display page non-display after completion of data reading of the multimedia file to the buffer memory and switching the data of the multimedia file read from the buffer memory to display;
Filtering means for filtering the data of the displayed multimedia file.

  According to the present invention, it is possible to shorten the time until the data display of the first page of the content is completed as compared with the case where the data of all the pages is read at once and displayed. In addition, according to the present invention, it is possible to reduce the time required for page transition compared to the method of displaying the page data after reading it into the buffer memory in units of pages (the display can be switched between pages at a high speed), and the operation can be performed. This saves time and is particularly convenient when the user browses menu-like content.

  In addition, according to the present invention, when displaying content on a network, a multimedia file such as an image is temporarily replaced with an image stored in the main body, and the multimedia file can be read during the display period. By replacing and displaying the multimedia file when it is needed after completion, the time required for content loading and the time required for page transition can be shortened, and the time required for content display completion can be shortened. It is possible to improve user convenience in the device.

  Further, according to the present invention, when the data of the multimedia file cannot be read, the error type identification image indicating the error type is read from the data holding unit and displayed by replacing the display page displayed on the display unit. Thus, even when the original image data cannot be displayed for some reason, the problem that no image is displayed can be prevented, and the reason can be determined by the user.

  Since the acquired multimedia file image is filtered, the image can be made clear and easy to see, and the convenience of the user can be enhanced.

  Next, the best mode for carrying out the invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is a flowchart for explaining the operation of the first embodiment of the display method according to the present invention. FIG. 2 is a schematic block diagram of the first embodiment of the display apparatus according to the present invention.
The present embodiment is an example in which the present invention is applied to a digital broadcast receiver as an electronic device having a memory having a smaller capacity than that of a memory mounted on a personal computer and a browser.

  In FIG. 2, a digital broadcast signal transmitted from a broadcast station (not shown) is supplied to a tuner 102 via an antenna 101, and after being selected and received here, is supplied to a central processing unit (CPU) 100, and a video RAM A predetermined signal process is performed on the (VRAM) 105 to obtain a video signal. This video signal is supplied to the display unit 106 via the display controller 104 and displayed. The display controller 104 controls the display unit 106 based on the video synchronization signal.

  On the other hand, in addition to the normal control function related to the reception display operation of the broadcast signal, the CPU 100 displays the content data and various display data based on the content browsing program stored in the memory 103 and is specific to this embodiment described later. Based on the operation, display is performed by the display unit 106. The flash memory 107 stores data of content to be displayed in advance. Further, the CPU 100 has a browser function for displaying the acquired content on the display unit 106 and setting the display area. The memory 103 also functions as a buffer memory.

  The digital broadcast receiver according to the present embodiment has a function of connecting to a network such as the Internet, and executes the content data acquired from a server on the network or the content data stored in the flash memory 107. The data is read into the memory 103 by a method peculiar to the form, and then read and displayed. Compared with the reading / reading speed of the flash memory 107, the reading / reading speed of the memory 103 used as the buffer memory is much higher. Since the display unit 106 displays the content data only for the data read from the memory 103, the content data stored in the flash memory 107 is once read into the memory 103, which is a buffer memory. It is read out and displayed on the display unit 106.

  Next, a display method according to the present embodiment based on the CPU 100 and the content browsing program stored in the memory 103 will be described with reference to the flowchart of FIG. The content browsing program of the digital broadcast receiver first acquires the first page A of the content to be displayed and reads it into a buffer memory portion (hereinafter also simply referred to as a buffer or buffer memory) of the memory 103 (step AS1). . As described above, in the present embodiment, the content to be displayed can be acquired from a server on the network or the flash memory 107. However, in the following description, it is assumed that the content is acquired from the flash memory 107. .

  Subsequently, it is determined whether or not an image file is used for the page A (step AS2). If the image file is not used, the process is terminated. If the image file is used, the image that may not be visible from the beginning is hidden (step AS3). However, when an image file is used for the page A displayed at the beginning of the acquired content, all the original data is set to be displayed.

  The image that does not need to be seen is an image of each page after the second page that uses the image file of the acquired content. In the present embodiment, the images of the second and subsequent pages using this image file are set to non-display under the control of the CPU 100, read from the flash memory 107, and read from the second and subsequent pages. The image data of each page is replaced with an image having a smaller data amount than the original image that the CPU 100 wants to display (step AS4).

  Then, instead of the images of the second and subsequent pages using the acquired image file of the content, the image data having a small data amount replaced with the image data is read into the memory 103. When the page is completed, the first page data of the content is read from the memory 103 and displayed on the display unit 106, and the image data of each page after the second page is read from the flash memory 107 again. Is read into the memory 103 (step AS5). At this time, the image of the first page A is displayed on the display unit.

After the original image is read into the memory 103 in step AS5, the original image of each page after the second page is not displayed while it is not necessary to display (step AS6).
Then, when the user designates an arbitrary page after the second page, the image of the designated page is switched from non-display to display, read from the memory 103, and displayed on the display unit 106 (step AS7). At this time, the image of the first page is switched from display to non-display.

  As described above, in the present embodiment, when content is read, only necessary images and sentences on the first page are read, and other images on the second page that do not need to be displayed immediately are data. It is replaced with an image having a small amount and read (steps AS1 to AS4). FIG. 4A shows an example in which an image of two pages (two sheets) is replaced with an image having a small data amount (for example, a very small transmission image). FIG. 4B shows an example of a display screen when the left two images in FIG. 4A are read as small images. The display image of the large area on the right side of the display screen is an image of the original data amount (for example, the first page) before the image of the two pages replaced with the image having a small data amount. .

Once the display of the content is completed, while the user is viewing the items (pages) that have already been displayed, the images with the smaller data are assigned to the original items in order from the related items (pages). It is replaced and read (steps AS5 and AS6), and is displayed when the user tries to see another item (page) (step AS7). Hide images that no longer need to be displayed. “A deeply related item” is an item that is likely to be viewed next by the user for reasons such as being deeply related to the content of the buttons that are close to each other.
This also applies to content that can be accessed directly. An example showing the depth of the relationship between contents is shown in FIG.

FIG. 3A is a display screen of the digital broadcast receiver when the A button is focused and the opened content is the A page. In this case, as shown in FIG. 3 (B), the C button is close to the A button and may be immediately focused. Therefore, the C button is related, and as shown in FIG. The next button in is expected to be linked to the content that continues, and it is highly likely that it will be referenced next.
Therefore, when the A button has focus and the A page is open, the contents of the B and C pages and the contents of the next page are preferentially read.

  In the present embodiment, all pages displayed at the beginning of content are set to display original image data. The image data of the other pages of the content is replaced with data with a small amount of data and is hidden so that the data of all pages of the apparent content is read and then the image data of the first page is displayed. . The content reading method of this embodiment is schematically shown in “Replace and read” in FIG.

  In the present embodiment, all the image data of pages other than the first page of the content is composed of data with a small amount of data, and therefore, schematically shown as “read all data at once” in FIG. In addition, the time until the display of the first page is completed is shorter in the present embodiment than in the reading method in which the first page is displayed after reading all the data of all pages of the content at once. Further, in this embodiment, the reading time experienced by the user can be shortened compared to the method of alternately reading and displaying each page, which is schematically shown as “reading only one page” in FIG. .

  In the present embodiment, the image data of pages other than the first page of the content is stored in the digital broadcast receiver during the display period of the page displayed by the CPU 100 on the display unit 106. Since the stored data is stored in the buffer memory and then the stored data is read out as necessary, there is an advantage that the display switching between pages can be performed at a higher speed than when the page is read again. The above buffer memory is included in the memory 103 of FIG.

In this embodiment, after displaying the first page of the content, the original data is replaced with the one with the smaller amount of data in order from the page closely related to the first page of the content, and is read into the buffer memory. The reason for reading from a page closely related to the first page of content is that the user is likely to open it as the next page of content to be viewed. Since these operations are performed while the user is viewing the first displayed content page, the content of the next page can be displayed without the user feeling a waiting time. When a user tries to view another page of content, the user simply switches the currently displayed content page from display to non-display, and switches the content page to be displayed from non-display to display.

  By doing so, it is not necessary to read data again when viewing another page, and it is possible to move between pages at high speed. As an example of means that can actually realize such movement, a case where a digital broadcast receiver equipped with a browser, JavaScript, and CSS (Cascading Style Sheets) is used (Java is a registered trademark; the same applies hereinafter) is shown. When JavaScript is used, HTML content can be dynamically operated and interactively operated, and is currently supported by most browsers.

  In this embodiment, it is used for the operation when HTML is first read and for the transition between pages. Also, CSS can align the document format. When you want to arrange several documents in the same style, you can set the formats that are used repeatedly in this way by grouping them together in the CSS. This is called a class. In recent years, it has been widely used because the appearance of content contents can be unified by referring to the same class. In the class, text color, background color, etc. can be set as attributes.

  CSS (Cascading Style Sheets) attributes used in this embodiment are visibility (display attribute that can be set to display or not) and background image (background-image; background in the specified area) Attribute used when specifying an image file to be processed). If you set the visibility attribute, you can specify whether or not to display an image that refers to the class. For the image to be displayed first, the visibility is set to “possible”. By making this visible, it is specified to display an image. For images that do not need to be displayed first, when specifying a background image (background-image), make sure that an image with a small amount of data is read first, and set the display attribute to hidden. Set it.

  By doing so, it is specified not to display an image. Since the HTML content that is read first is an image with a small amount of data other than the picture that you want to display from the beginning, the time until the display is completed is longer than when all the images are displayed on one piece of content. (See FIG. 4C). By using the JavaScript function, it is possible to change the CSS attribute value once read. In the present embodiment, when viewing another image, the visibility of the image that has been viewed so far is switched from visible (display) to hidden (non-display) and hidden. Then, the image that has been hidden (hidden) until now is set to be visible (displayed).

  In addition, CSS attributes that can be changed by JavaScript can not only display / hide images but also background image attributes that refer to image files. An image with a small amount of data is designated as a background image for an image that is not displayed in the initial state, and display of HTML content is completed once. While the user is looking at the first loaded item, the address of the original image is changed in order from the closely related item. A closely related item refers to an item that may be referenced immediately from the first loaded item. For example, it is a continuation item after the first read item (see FIG. 3). The reason for reading from items that are closely related is that the user is more likely to browse next than other items, so it is considered that an image is required earlier than other items. After changing to the address of the original image, the image is not visible to the user, but is read, and when the visibility is changed to “possible” (display), the image originally intended to be displayed is displayed. When this method is used, only the display / non-display switching of the image is required as compared with the case of displaying the image separately for each page, so that the time until the display is completed is shortened.

  According to the present embodiment, even if the content displayed on the page changes, the HTML content is created with one HTML, so the HTML content is not reloaded and the waiting time until the user completes the display. Can be reduced. Further, according to the present embodiment, an image that has been read once can be displayed only by switching the visibility (possible) or hidden (non-display) from the next use. For this reason, once an image is displayed, no reading time is generated, so that the movement between pages can be performed lightly.

  FIG. 5 shows a diagram in which the menu screen in the present embodiment is realized using a large image and HTML. The rectangular small area images A, B, C, D, and E on the left side of the screen shown in FIGS. 5B to 5C are images showing buttons. By pressing these buttons, The page content corresponding to the selected button is displayed on the large area screen portion on the right side of the screen. For example, page A is displayed when the A button is pressed, and page B is displayed when the B button is pressed. As a result, although it looks 5 pages, it can actually be created with a single HTML, and the transition between pages is just switching the visibility of the image, so it is faster than creating a link with each page created it can.

  That is, when three pages A1, B2, and C2 of one content shown in FIG. 5A are selected and displayed, first, as shown in FIG. Assume that A is opened and the A button is in focus. As a result, as shown in FIG. 5B, in the class read at the time of displaying the page, the background image attribute is set to image A1, and the visibility is set to displayable (possible). Is displayed. In the following, visibility is indicated for solid lines in the figure, and visibility is not displayed for dotted lines (hidden). In the initial state shown in FIG. 5B, the image used in the other page B is set as an image B1 having a small amount of data as the background image attribute, and the visibility cannot be displayed, and the image is not displayed. It has become. The same applies to the image C1 used in the page C.

  While the user is viewing page A which is the first display state, images of page B and page C, which are items that are likely to be viewed by user from page A, are displayed as background images in this embodiment. Replace and read the original image. Here, the reason why the relevance is judged to be high is that the items above and below the button A are the button B and the button C. Since these focus movements from the button A are short, page B or page C This is because there is a possibility that it will be referred to sooner than D or page E.

  When the images of page B and page C are read, the images of page D and page E are replaced and read in the same manner. When the user presses the B button to view another page, the visibility of the image A1, which is the background image of the currently displayed page A, is set to be non-displayable so that the background image of the page B is not visible. The visibility of the original image set to “1” is changed to displayable (FIG. 5C). In this example, the button placed on the left side of the screen is pressed to display the next page, but an onclick function is used as one means for detecting that the button has been pressed. How to use is listed.

As shown in FIG. 5C, when the focus is moved from the A button to the B button and it is detected that the button is clicked, the visibility of the displayed image A1 is disabled and the visibility of the image B1 is displayed. Is changed to displayable, the screen of the image B2 is displayed on the front.
In page B, page D and page A are thought to be closely related from the position of the button, but since page A has already been displayed, it is not read again. Page D is read if it has not been read while page A is displayed.

Similarly, in the display state shown in FIG. 5B, when the user presses the C button to view another page, the visibility of the image A1, which is the background image of the currently displayed page A, cannot be displayed. The visibility of the original image set as the background image of page C is changed to displayable and displayed. That is, as shown in FIG. 5D, when it is detected that the focus is moved from the A button to the C button and the click is detected, the visibility of the displayed image A1 is disabled and the image C2 is displayed. Is changed to displayable, the screen of the image C2 is displayed on the front.
In page C, page E and page A are considered to be closely related from the position of the button, but page A has already been displayed, so it will not be read again. Page E is read if it has not been read while page A is displayed.

  FIG. 6 is a sequence diagram simply showing the operation of the present embodiment. In the example of FIG. 5, the content to be displayed is 5 pages in total, but in FIG. 6, it is assumed that the number of pages is 3 for easy understanding. Pages B ′ and C ′ are pages obtained by replacing page B and page C with images having a data amount smaller than the data amount.

  In FIG. 6, when the user first issues an instruction to display the first page A of a certain content (step S21), the data of page A is first read into the buffer (step S22), and then replaced with the data with the smaller amount of data. The data of page B 'and page C' thus received are temporarily read together without being displayed (steps S23 and S24). Only page A is displayed. Here, since the content has a total of 3 pages, the reading of the first page A of the content is completed by reading the data of a total of 3 pages of pages A, B ′, and C ′ into the buffer (step S25).

  Here, the time required to complete the reading of page A requires time to complete the reading of other pages B and C, but in this embodiment, the data is replaced with data with a small amount of data. Since page B 'and page C' are apparently read as page B and page C, reading of page A is completed in a shorter time than conventional.

  Subsequently, although it seems that the display of page 3 has been completed once, the original page B and page C data is read into the buffer while the user is displaying page A (steps S26 and S27). . Thereafter, when the user switches the page from page A to page B (step S28), the page displayed on the display unit is switched from A to B (step S29), and the display of page B is completed (step S29). Step S30). As described above, in the present embodiment, since only the display and non-display of the page are switched, the user does not have time to reload the page, and the page transition can be performed quickly.

  FIG. 7 shows a display screen of an embodiment applied to an exhibition guide menu or the like. With the image shown in FIG. 7A as the initial screen, the screen is switched when a predetermined time elapses or the next button on the initial screen is pressed, and page A, which is the next page shown in FIG. 7B, is opened. While the user is viewing page A, page B is displayed when button B is pressed, page C is displayed when button C is pressed, and the next button is pressed or time passes. The page contents are read with the page to be displayed as a deeply related item.

  After preferentially reading the data of the next page of page B, page C, and page A, the data of page D and page E are read. FIG. 7C shows the display screen when moving to page B, and FIG. 7D shows the display screen when moving to page C. In FIGS. 7C and 7D, the screen of page A is hidden and the screens of page B and page C are displayed on the front as shown by the dotted lines. Then, the data of the next page that seems to be closely related to page B and page C is read. If page D data has not been read while page A is open, page D data is also read preferentially. The B button and the C button are buttons next to the A button. However, since page A is activated and displayed first, the data remains in the flash memory and is not read again.

  Next, the effects expected when the first embodiment is actually applied to content will be described with specific numerical values. The size per content (one page) that can be replaced with a small image is 80 kB. Further, it is assumed that there is 200 kB of minimum data that does not cause replacement. Furthermore, the size of an image with a small data amount set first is 1 kB. The total data amount is shown on the assumption that the number of content pages is 5 (5 pages).

(1) When this embodiment is not applied and data of all pages of content is first read 200 kB + 80 kB × 5 sheets = 600 kB
(2) When this embodiment is not applied, only the first page of content is read, and the second and subsequent pages are read in page units 200 kB + 80 kB × 1 sheet = 280 KB
(3) In the case of this embodiment 200 kB + 80 kB × 1 sheet + 1 kB × 4 sheets = 284 KB
If these contents are viewed on a device with a line speed of 600 KB per second, the time required is 1 second (= 600 KB ÷ 600 KB) when this embodiment is not applied and all data is read first. However, when this embodiment is not applied and only the first page is read and then read each time, it is 0.466 seconds (= 280 kB ÷ 600 kB; however, the reading time occurs when moving to another page) According to the present embodiment, it is 0.473 seconds (= 284 kB ÷ 600 kB; reading of other pages is not experienced by the user), and the reading time is reduced to less than half of the data reading time of all pages, and the content Obviously, there is no waiting time when the page is moved, and it is clear that there is an effect of shortening the waiting time of the user.

  As described above, according to the present embodiment, when viewing a content such as a menu or help with many items on a device having a small memory capacity for screen display, only the necessary images among the content images are first displayed. Display and replace other images with ones with a small amount of data, and use them by reading and replacing the content that is closely related to the current content while the user is viewing the content image Compared to displaying images etc. all at once, the time to complete the display can be shortened, and the display switching between pages can be performed at high speed. Convenience when browsing can be improved.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.
FIG. 8 is a schematic configuration diagram of a second embodiment of a display device according to the present invention.
This is an example applied to a digital broadcast receiver equipped with a browser that has a smaller capacity than the memory installed in a personal computer. The digital broadcast receiver according to the present embodiment has a function of connecting to a network such as the Internet, and displays multimedia contents such as images and sounds on the network.

  Here, a mechanism when the content on the server 21 (page A using the original multimedia file) is read is shown. It is expected that there are many methods for realizing such a mechanism, but the following is described on the assumption that this content is described in HTML.

  The content browsing program 22 installed in the digital broadcast receiver reads the content data page A on the server 21 connected via the Internet. Further, it is assumed that a file corresponding to an image (for example, sound, image, moving image, etc.) corresponding to the type of multimedia file is stored in the data holding unit 23 in the main body of the digital broadcast receiver. The digital broadcast receiver further includes a buffer 24, a memory 25, and a display unit 26.

  In the present embodiment, when a multimedia file such as an image exists when content is read, the data recorded in advance in the data holding unit 23 in the digital broadcast receiver (main body) is replaced with the image. Display. As an example of data recorded in the data holding unit 23 in the main body, an icon having a data amount smaller than an image to be originally displayed so that the type of data can be seen at a glance. Assume that the icons displayed at this time have several types in the data holding unit 23 so that the icons can be changed according to the type of the original file as will be described later.

  In this embodiment, an image on the Internet or the like is not read and an image is not generated, and display is performed using data in the main body to perform display at a high speed, and while the image is being displayed, Read the original multimedia data. If it is necessary to display it, display it after replacing the data. As an example of means for realizing such movement easily and visually, in this embodiment, in this embodiment, a digital broadcast receiver equipped with a browser, HTML content built in the main body, and Java. The case where it implement | achieves by Script is shown.

  When JavaScript is used, HTML content can be dynamically operated and interactively operated, and is currently supported by most browsers. In the present embodiment, as an example of processing performed after an image in the main body is displayed first and the image is read, as shown in FIG. 9A, the HTML file to be displayed is called image_load () in Java Script. Suppose you have a function that reads the original image. The original image is assumed to be placed on a server (21 in FIG. 8) connected to the Internet.

  When an image is put on the HTML content, if <IMG-onLoad = “processing”> is described, the processing described in onLoad is performed when the image is read. When a JavaScript function, image_load (), as shown in FIG. 9B, is inserted here, after the image recorded in the main body has been read (see FIG. 9C), the original image is displayed. The original content to be read and displayed can be displayed (see FIG. 9D).

  Next, the operation of the present embodiment shown in FIG. 8 will be described with reference to the flowchart of FIG. 10 of the second embodiment of the method of the present invention and FIG. In FIG. 11, the right half of the figure shows the movement of the browsing program 22, and the left half shows the display function. Here, a case where an icon is used will be described as an example of a small amount of data and high visibility. First, the content browsing program 22 of FIG. 8 reads the original page A of the content data on the server 21 via the network (step BS1). Subsequently, it is determined whether or not the read page A uses a multimedia file such as an image (step BS2). If not, page A is displayed (step BS9), and the process is terminated.

  On the other hand, if a multimedia file is used, an address (reference address) is temporarily stored in the buffer 24 from a location referring to the multimedia file (step BS3). For example, in the case of HTML, if there is a reference to a multimedia file such as <IMG src = "..."> <embed src = "file: // ...">, the address referred to is stored in the buffer 24. Keep it inside. Also, as shown in FIG. 11, the buffer 24 stores the file name (Filename) of the multimedia file to be read.

  Subsequently, from the extension and file name of the reference address stored in the buffer 24, it is determined what type (image, sound, etc.) the multimedia file is (step BS4). FIG. 12 shows an example specifically showing the relationship between the determined file type and the corresponding icon. FIGS. 12A to 12C show icons created using JPEG images, WAV audio, and MPEG moving images as examples. The icons in FIGS. 12D to 12F are icons used in the example of FIG. 16 to be described later. However, as shown in FIG. 12, the user can see what type of file is in one shot. Use something.

  Although not shown in FIG. 12, even if the icon is not divided by the extension of the linked file or the like, it is used by other users who do not have knowledge of the extension as used in other drawings. There is also a method of dividing and indicating with icons so that it can be understood that there is data such as images, video and audio even if it is viewed. The above icons are stored in advance in the data storage unit 23 in the main body.

  Returning to FIG. 10 and FIG. The browsing program 22 selects an icon of a type corresponding to the determined multimedia file from the icons stored in the data storage unit 23 in the main body of FIG. 8, and generates a page B (FIG. 8) based on the selected icon. 8) is replaced with the multimedia file (step BS5), and the page B of the replaced icon is displayed on the display unit 26 (step BS6).

  Subsequently, after the display of page B is completed, the multimedia file is read from the server 21 with reference to the address stored in the buffer 24 and stored in the memory 25 (step BS7), and the reading is completed. Then, the original multimedia file page A image (28 in FIG. 8) is replaced and displayed on the display unit 26 (steps BS8 and BS9). If the referenced file cannot be read for some reason at this time, or there is no data to be read, it will not be replaced.

  FIG. 13 is a sequence diagram for explaining the operation of the present embodiment described with reference to FIGS. In FIG. 13, when the user issues a display request for page A (step S1-1), the display request is displayed on the display unit 26, and the browsing program 22 according to the present embodiment transfers the data for page A to the network. To go to the server 21 through (step S2). Thereby, the browsing program 22 acquires the data of page A from the server 21 via the network (step S3), and stores the reference address from the acquired data to the multimedia file in the buffer (24 in FIG. 8). (Step S4), the icon is changed to the icon in the data holding unit 23 in the main body according to the file type (Step S5), and the page B that refers to the icon is configured (Step S6).

  Next, the browsing program 22 displays the state of page B on the display unit 26 (step S7-1). When the display of page B on the display unit 26 is completed (step S7-2), the browsing program 22 proceeds to acquire original data from the server 21 based on the reference address in the buffer (step S8). When the original data is acquired via the network (step S9), it is stored in the memory (25 in FIG. 8), and then the display on the display unit 26 is changed from the state in which the main body icon is displayed from the memory 25. Page A on which an image based on the original data is displayed is reproduced (steps S10 and S11).

  As described above, according to the second embodiment, when a content page using a multimedia file such as an image is displayed, data recorded in the main body data holding unit 23 (for example, data (Such as icons that can be seen at a glance) for each file type, read the original data while the data is displayed, and display or play it when necessary. Therefore, it is possible to reduce the time required for reading the content and the time required for page transition, and the convenience of the user in the function can be improved.

  In addition, by doing so, it is possible to avoid the problem that no image is displayed even if the page display cannot be completed due to insufficient memory. Since these operations are performed while the user is viewing the displayed page, the reading of all data can be completed without the user feeling a waiting time.

  Next, the effects expected when the present embodiment is actually applied to content will be described with specific numerical values. The size per multimedia file that can be replaced with an icon in the main body is 80 kB. Further, it is assumed that there is 200 kB of minimum data that does not cause replacement. Furthermore, the icon size in the main body with a small amount of data set first is assumed to be 1 kB. Also assume that there are five linked multimedia files.

  As shown in FIG. 14 (A), the present embodiment is not applied, and the total data amount when first reading all the data of the multimedia file is 600 kB (= 200 kB + 80 kB × 5). When these contents are displayed on a device with 600 kB per second, the waiting time required to complete the display is 1 second (= 600 kB ÷ 600 kB).

  On the other hand, as shown in FIG. 14B, in this embodiment in which an image in the main body is first read and then the original image is read and sequentially displayed, the amount of data to be read is 284 kB (= 200 kB + 80 kB × 1). Therefore, when these contents are displayed on a device having a line speed of 600 kB per second, the waiting time until the display is completed is 0.473 seconds (= 284 kB ÷ 600 kB).

  Therefore, compared with the case of the conventional method shown in FIG. 14A in which the user waiting time is schematically indicated by A in FIG. 14C, the user waiting time is schematically indicated by B in FIG. It is clear that the present embodiment of FIG. 5B has the effect that the reading of other pages is not experienced by the user and that the reading time is reduced to less than half of the total data reading time.

(Third embodiment)
Next, a third embodiment of the present invention will be described.
FIG. 15 is a schematic configuration diagram of the third embodiment of the display method according to the present invention.
In the figure, the same components as those in FIG. This embodiment is an example in which the functions of steps BS7 to BS9 in FIG. 10 of the second embodiment are further expanded to cope with errors. For this purpose, an error display icon is also prepared in the in-body data holding unit 23.

  Next, the operation of the present embodiment will be described with reference to the flowchart of FIG. In the figure, the same processing steps as those in FIG. 10 are denoted by the same reference numerals, and the description thereof is omitted. In the embodiment shown in FIG. 15, following step BS6 in FIG. 10, the original multimedia file data on the server 21 is acquired (step BS11 in FIG. 16), and it is determined whether the data can be displayed ( Step BS12 in FIG. 16) When it can be displayed (when data is acquired), it is replaced with the original data (step BS8 in FIG. 16). This is the same as in the second embodiment.

  On the other hand, in this embodiment, when the browsing program 31 in FIG. 15 determines in step BS12 that the multimedia file could not be acquired for some reason, the program determines the type of error 32 returned (FIG. 15). 16 step BS13). Then, the icon 33 in the data holding unit 23 in the main body corresponding to the determined error is replaced with the image displaying the page B and displayed on the display unit 26 (step BS14 in FIG. 16). Thereafter, page A in which the address of the reference image is changed is displayed (step BS9 in FIG. 16).

  Thus, in this embodiment, the reason why the multimedia file could not be displayed to the user even when the multimedia file could not be displayed as shown in FIG. 15 can be indicated by the icon 33 and no image is displayed. The problem can be prevented.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIGS.
FIG. 17 is a schematic configuration diagram of a fourth embodiment of a display device according to the present invention.
FIG. 18 is a diagram illustrating an image that has been subjected to filter processing using a median filter. FIG. 18A illustrates an original image without filter processing, and FIG. 18B illustrates a processed image that has been subjected to filter processing. , (C) shows a filtering method.
FIG. 19 is a diagram showing the types of filters used in the filter processing, where (A) is the original image to be filtered, (B) is the 8-neighbor sharpening filter, and (C) is the weighted average. Indicates a filter.
FIG. 20 is a flowchart for explaining the operation in the fourth embodiment of the present invention.
FIG. 21 is a diagram for explaining the filter processing of the displayed image.
FIG. 22 is a sequence diagram for explaining operations in the fourth embodiment of the present invention.

As shown in FIG. 17, the display device according to the fourth embodiment of the present invention is a filter program for performing a filtering process on an image displayed on the display unit 26 in the display device according to the second embodiment. 34 is added, and the others are the same.
The filtering process can be performed using various filters.

First, an original image filtering method using a median filter will be described with reference to FIG.
The filter processing using the median filter takes out N × N (N is a natural number) pixels from the original image and arranges the density values of these pixels in order from the smallest to the largest. The density value is set to an N × N center density value after processing, and this operation is sequentially performed in the row direction and the column direction to obtain a processed image.
In this case, N = 3, and pixels of 3 × 3 size are extracted from the original image shown in FIG. 18A, and the density values of the pixels are arranged in order from the smallest to the largest. As shown in FIG. 18C, the minimum value is 1, the maximum value is 6, and the middle density value is 2. For this reason, the density value in the middle of the 3 × 3 pixel range of the processed image is determined to be 2. By performing the above in the row direction and the column direction of the image, a filtered image without sesame salt-like noise shown in FIG. 18B is obtained.

In addition to the filters described above, there are an 8-neighbor sharpening filter shown in FIG. 19B and a weighted average filter shown in FIG. 19C.
As shown in FIG. 19B, the 8-neighbor sharpening filter has a 3 × 3 coefficient centered on a pixel to be processed.
When performing filter processing using this filter, multiplication is performed by eight coefficients of an 8-neighbor sharpening filter corresponding to 8 pixels in the vicinity of the pixel to be filtered of the original image before processing shown in FIG. Further, the center pixel is multiplied by the center coefficient of the 8-neighbor sharpening filter, the sum of each value obtained by the multiplication is obtained, and this sum is filtered by the center pixel of the original image before processing. The pixel value after processing is used. According to this filter processing, the change in density value can be emphasized at the edge portion of the image, and a clear image can be generated.

In the weighted average filter, as shown in FIG. 19C, a 3 × 3 weighting coefficient is arranged.
When performing filter processing using this filter, a weight coefficient is set to a 3 × 3 pixel value for nine pixels in the vicinity of the pixel to be filtered in the original image before processing shown in FIG. Multiply and calculate the sum. The pixel value of the pixel to be filtered is replaced with the above sum value, and this operation is performed along the row direction and the column direction to obtain a filtered image.
According to this filter processing, since each pixel value is read and the median value is calculated, it is not necessary to compare or rearrange the pixel values, so that high-speed processing is possible.

In addition, when there is a restriction such as a small memory capacity for image display, color table conversion to realize high-quality image representation with limited colors using frequency method or median cut quantum method It can be performed.
Furthermore, in addition to image processing using filters, image noise is removed with binary images such as characters, expansion and contraction processing that corrects shadowed characters and missing characters, and the position and direction of the image. There is image processing based on conversion processing such as affine transformation for determining coordinates when performing rotation or the like.

Next, the operation of the fourth exemplary embodiment of the present invention will be described.
As shown in FIG. 20, in the operation of the fourth embodiment of the present invention, the same steps as (Step BS1) to (Step BS6) in the operation of the second embodiment are performed. When there is a request to view the content with the filtered or converted image from (step BS15), (step BS16) is sequentially performed.

(Step BS15)
After performing (Step BS6), the browsing program 22 is executed, and the multimedia file is read from the server 21, and as shown in FIG. Is displayed, and an item to be filtered is selected from the menu by a button (shown as a blue button in FIG. 21A) provided at the lower portion of the screen of the display unit 26, and then the filter program 34 is executed. And store the filtered multimedia file in memory 25 as described above.

(Step BS16)
Next, when all the multimedia files are stored in the memory 25, as shown in FIG. 21B, the page B of the icon displayed on the display unit 26 is the original multimedia file that has been filtered. The image is replaced with the image of page A and displayed on the display unit 26.

Further, in the operation of the second embodiment, when (Step BS1) to (Step BS9) are finished and page A is displayed on the display unit 26 and then the filtering process is performed, the original data already read into the memory 25 is used. After the image data of the multimedia file is read again, the filtering process can be performed by performing the same steps as in (Step BS15).
By doing the above, you can perform user's favorite filter processing, such as color conversion if the color is difficult to understand and confusing, or noise removal if the text in the image is difficult to see, You can get an easy-to-understand image that suits your taste.

Next, an operation sequence in the embodiment of the present invention will be described.
As shown in FIG. 22, the operation sequence of the fourth embodiment of the present invention performs the same steps as (step S1) to (step S7-2) in the operation sequence of the second embodiment, Thereafter, when there is a request from the user to view the content with the filtered or converted image, (Step S12) to (Step S14) are sequentially performed, and the rest is the same.

(Step S12)
After performing (Step S7-2), a request is made from the user to view the content with the filtered or converted image.

(Step S13)
While the browsing program 22 is executed and the multimedia file is being read from the server 21 (steps S8 and S9), as shown in FIG. In FIG. 21A, an item to be filtered is selected from the menu by displaying a blue button), and then the filtering program 34 is executed, and the filtered multimedia file is stored in the memory 25. Remember.

(Step S14)
The page B of the icon displayed on the display unit 26 constitutes the image (page A ′) of page A of the original multimedia file subjected to the filtering process stored in the memory 25.
(Step S15)
This page A ′ is displayed on the display unit 16.
(Step S16)
The display of such page A ′ is completed.

  Furthermore, after the steps from (Step S1) to (Step S11) in the operation sequence of the second embodiment are completed and the page A is displayed on the display unit 26, the content is viewed by the image that has been filtered or converted by the user. If there is a request, the filtering process can be performed by the same steps as described above.

Specifically, this is performed as follows.
(Step S17)
After performing (Step S11), a request is made from the user to view the content with the filtered or converted image.

(Step S18)
While the browsing program 22 is executed and the multimedia file is being read from the server 21 (steps S8 and S9), as shown in FIG. In FIG. 21 (A), a blue button is displayed), and after selecting an item to be filtered from the menu, a filter program 34 is executed, and the filter processing stored in the memory 25 is performed. Filter media files.

(Step S19)
Configure a filtered multimedia file page A ′.

(Step S20)
This page A ′ is displayed on the display unit 26.
(Step S21)
Thus, the display of page A ′ is completed.

  According to the fourth embodiment, it is possible to improve the convenience of the user by making the image clear and easy to see.

In the case of the fourth embodiment, it is possible to cope with errors as in the third embodiment.
An item to be filtered is selected from the menu by a button (displayed as a blue button in FIG. 21A) provided at the bottom of the screen of the display unit 26, but the item to be filtered is set in advance. In this case, the filter processing may be performed by pressing the blue button in FIG.
Thus, a user who wants to frequently use a filter on an image can immediately see the content of the image filtered by simply pressing a single button. If a filter preview function or the like is added, the user can visually confirm what kind of filter the filter is.

  The present invention is not limited to the above embodiment, and for example, the present invention can be applied to an electronic device equipped with a browser other than a digital broadcast receiver. The present invention also includes browsing programs 22 and 31 themselves.

It is a flowchart for operation | movement description of 1st Embodiment of the display method of this invention. 1 is a schematic block diagram of a first embodiment of a display device of the present invention. It is a figure which shows an example of the depth of the relationship between the contents in the 1st Embodiment of this invention. It is a figure which shows the comparison of the 1st Embodiment of this invention and the conventional content reading method. It is a figure which shows the example of a display image which implement | achieved the 1st Embodiment of this invention by HTML. It is a sequence diagram for operation | movement description of the 1st Embodiment of this invention. It is a figure which shows the example of a display image at the time of applying the 1st Embodiment of this invention to the guidance menu of an exhibition. It is a schematic block diagram of 2nd Embodiment of the display apparatus of this invention. It is a figure which shows the example which realized the 2nd Embodiment of this invention visually. It is a flowchart for operation | movement description of 2nd Embodiment of the display method of this invention. It is the figure which visualized the flowchart of FIG. It is a figure which shows an example of the relationship between the address in the buffer and the data in a main body in the 2nd Embodiment of this invention. It is a sequence diagram for operation | movement description of the 2nd Embodiment of this invention. It is a figure explaining the effect of the 2nd Embodiment of this invention. It is a schematic block diagram of the 3rd Embodiment of this invention. It is a flowchart for operation | movement description of the principal part of the 3rd Embodiment of this invention. FIG. 10 is a schematic configuration diagram of a fourth embodiment of a display device according to the present invention. It is a figure which shows the image which performed the filter process using the median filter. It is a figure which shows the kind of filter used for a filter process. 10 is a flowchart for explaining operations in the fourth embodiment of the present invention. It is a figure explaining the filter process of the displayed image. FIG. 10 is a sequence diagram for explaining operations in the fourth embodiment of the present invention. It is a figure which shows each example of a general menu screen. It is a schematic system block diagram of an example of the conventional display method. It is a figure explaining the advantage in the case of replacing | exchanging and reading the image in a main body.

Explanation of symbols

21 Server 22, 31 Browsing program 23 Data storage unit 24 Buffer 25 Memory 26 Display unit 27 First page B to be displayed
28 Original image page 33 Image in the main body that shows why the image cannot be displayed 34 Filter program 100 Central processing unit (CPU)
103 Memory 106 Display 107 Flash Memory

Claims (9)

A display method by an electronic device equipped with a browser having a function of displaying a content page,
Of the acquired content page, the data of the first page including the image file is read into the buffer memory, and among the acquired content pages, the second and subsequent pages including the image file are read. Replacing the image file of the page with image data whose data amount is smaller than that of the image file, and temporarily reading it into the buffer memory;
With respect to the image files of all the second and subsequent pages including the acquired image file of the content, the amount of the image data replaced in the first step is smaller than that of the image file in the buffer memory. A second step of determining completion of reading of the data of the first page by reading, and displaying the data of the first page on a display unit;
A third step of sequentially reading the data of the second and subsequent pages including the image file into the buffer memory during the display period of the data of the first page of the content displayed on the display unit; ,
The data of an arbitrary page among the data of the second and subsequent pages including the image file read into the buffer memory in the third step is read from the buffer memory at an arbitrary timing and displayed. And a fourth step of switching to non-display the data of the page that has been displayed on the display unit until then. A display device that once reads data of a page including an image file among pages of arbitrary content into a buffer memory and displays the data on a display unit,
An acquisition means for acquiring a page of arbitrary content;
Of the acquired content page, the first page data including the image file is read into the buffer memory, and the second and subsequent pages including the image file are included in the acquired content page. First data reading means for replacing the image file of the page with image data having a data amount smaller than that of the image file and temporarily reading the data into the buffer memory;
The buffer memory of image data in which the data amount replaced by the first data reading means is smaller than that of the image file for the image files of the second and subsequent pages including the acquired content image file Display control means for determining completion of reading of the data of the first page by reading into the display unit, and displaying the data of the first page on the display unit;
Second data reading for sequentially reading the data of the second and subsequent pages including the image file into the buffer memory during the display period of the data of the first page of the content displayed on the display unit Means,
Data of an arbitrary page is read from the buffer memory at an arbitrary timing among the data of the second and subsequent pages including the image file read into the buffer memory by the second data reading means. A display device comprising: switching means for displaying the data on the display unit and switching the data of the page displayed on the display unit to non-display. A display method by an electronic device equipped with a browser having a function of displaying a multimedia file acquired from an arbitrary server via a network,
A first step of obtaining the multimedia file from the arbitrary server;
A second step of determining the type of the acquired multimedia file;
From the data holding unit that holds a plurality of type identification images having a data amount smaller than the image of the multimedia file originally intended to be displayed in a one-to-one correspondence with the plurality of types of the multimedia file. A third step of selecting the type identification image indicating the type of multimedia file determined in step 2;
A fourth step of generating a display page based on the type identification image selected in the third step and displaying the display page on a display unit;
A fifth step of reading data of the multimedia file acquired in the first step into a buffer memory during a display period of the display page;
And a sixth step of switching the display of the multimedia file data read from the buffer memory to non-display after the completion of reading the data of the multimedia file into the buffer memory. A display method characterized by. A function for displaying a multimedia file acquired from an arbitrary server via a network on a display unit, and a plurality of types of the multimedia file in a one-to-one correspondence, and more data than an image of the multimedia file to be originally displayed. A display device using an electronic device equipped with a browser, comprising a data holding unit that holds a plurality of types identification images with a small amount in advance,
Obtaining means for obtaining the multimedia file from the arbitrary server via the network;
Determining means for determining the type of the acquired multimedia file;
Selecting means for selecting the type identifying image indicating the type of multimedia file determined by the determining means from the data holding unit;
Display control means for generating a display page based on the type identification image selected by the selection means, and displaying the display page on the display unit;
Read control means for reading the data of the multimedia file acquired by the acquisition means into a buffer memory during the display period of the display page;
And switching means for making the display page non-displayed and switching the data of the multimedia file read from the buffer memory to display after the completion of data reading of the multimedia file to the buffer memory. Display device. A display method by an electronic device equipped with a browser having a function of displaying a multimedia file acquired from an arbitrary server via a network,
A first step of obtaining the multimedia file from the arbitrary server;
A second step of determining the type of the acquired multimedia file;
From the data holding unit that holds a plurality of type identification images having a data amount smaller than the image of the multimedia file originally intended to be displayed in a one-to-one correspondence with the plurality of types of the multimedia file. A third step of selecting the type identification image indicating the type of multimedia file determined in step 2;
A fourth step of generating a display page based on the type identification image selected in the third step and displaying the display page on a display unit;
During the display period of the display page, the multimedia file data is filtered while the multimedia file data acquired in the first step is read into the buffer memory, A fifth step of completing the memory;
And sixth step of switching the display of the multimedia file data read from the buffer memory to non-display after the storage of the data of the multimedia file in the buffer memory is completed. A display method characterized by that. A display method by an electronic device equipped with a browser having a function of displaying a multimedia file acquired from an arbitrary server via a network,
A first step of obtaining the multimedia file from the arbitrary server;
A second step of determining the type of the acquired multimedia file;
From the data holding unit that holds a plurality of type identification images having a data amount smaller than the image of the multimedia file originally intended to be displayed in a one-to-one correspondence with the plurality of types of the multimedia file. A third step of selecting the type identification image indicating the type of multimedia file determined in step 2;
A fourth step of generating a display page based on the type identification image selected in the third step and displaying the display page on a display unit;
A fifth step of storing data of the multimedia file acquired in the first step in a buffer memory during a display period of the display page;
A sixth step of hiding the display page and switching the multimedia file data read from the buffer memory to display after the storage of the data of the multimedia file in the buffer memory is completed;
And a seventh step of performing a filtering process on the data of the displayed multimedia file.   In addition to the plurality of type identification images, an error type identification image indicating an error type is held in advance in the data holding unit, and in the sixth step, the data of the multimedia file is stored from the buffer memory. A seventh step of reading the error type identification image indicating the error type from the data holding unit and replacing the display page displayed on the display unit and displaying it when the data cannot be read; The display method according to claim 3, 5 or 6. A function for displaying a multimedia file acquired from an arbitrary server via a network on a display unit, and a plurality of types of the multimedia file in a one-to-one correspondence, and more data than an image of the multimedia file to be originally displayed. A display device using an electronic device equipped with a browser, comprising a data holding unit that holds a plurality of types identification images with a small amount in advance,
Obtaining means for obtaining the multimedia file from the arbitrary server via the network;
Determining means for determining the type of the acquired multimedia file;
Selecting means for selecting the type identifying image indicating the type of multimedia file determined by the determining means from the data holding unit;
Display control means for generating a display page based on the type identification image selected by the selection means, and displaying the display page on the display unit;
During the display period of the display page, the multimedia file data is filtered while the multimedia file data acquired by the acquisition unit is being read into the buffer memory, and then stored in the buffer memory. Control means to complete;
And switching means for making the display page non-displayed and switching the data of the multimedia file read from the buffer memory to display after the completion of data reading of the multimedia file to the buffer memory. Display device. A function for displaying a multimedia file acquired from an arbitrary server via a network on a display unit, and a plurality of types of the multimedia file in a one-to-one correspondence, and more data than an image of the multimedia file to be originally displayed. A display device using an electronic device equipped with a browser, comprising a data holding unit that holds a plurality of types identification images with a small amount in advance,
Obtaining means for obtaining the multimedia file from the arbitrary server via the network;
Determining means for determining the type of the acquired multimedia file;
Selecting means for selecting the type identifying image indicating the type of multimedia file determined by the determining means from the data holding unit;
Display control means for generating a display page based on the type identification image selected by the selection means, and displaying the display page on the display unit;
Read control means for reading the data of the multimedia file acquired by the acquisition means into a buffer memory during the display period of the display page;
Switching means for making the display page non-display after completion of data reading of the multimedia file to the buffer memory and switching the data of the multimedia file read from the buffer memory to display;
Filtering means for filtering the data of the displayed multimedia file. A display device comprising: