JP2002182638A - Image display device and image display system - Google Patents

Abstract

(57) [Summary] [Problem] To appropriately display an image represented by HTML content supplied via a network such as the general Internet on a display device provided in a communication terminal device such as a mobile phone or a PHS. thing. SOLUTION: An HTML reading unit 302 analyzes a tag or the like in HTML content received via a network. The display control unit 301 generates a full-scale virtual display image based on the analysis result by the HTML reading unit 302, and stores the virtual display image in the image memory 303. Display control unit 30
Reference numeral 1 enlarges or reduces the stored virtual display image based on information on a user's enlargement (reduction) operation from the operation unit 203 and stores the image in the image memory 304. The display control unit 301 generates a display image that matches the displayable area of the display unit 206 using the enlarged or reduced virtual display image.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a content described in a structure description language (a document including a reference description of an image).
And an image display device which receives the image via a network such as the Internet and displays the image as an image.

[0002]

2. Description of the Related Art In recent years, in conjunction with the spread of the Internet, HTML (Hype
The distribution of contents (multimedia data such as documents, images, and sounds) described in a structure description language such as rText Markup Language is rapidly advancing. HTML
The distribution of content described in a structure description language such as (hereinafter simply referred to as “HTML content”) is performed, for example, as follows.

[0003] In other words, a personal computer or the like connected to a network such as the Internet uses a URL (Uniform Resource Locator) of desired HTML content.
ors) to send to the network. The information providing device (server) corresponding to the URL acquires the HTML content designated by the personal computer from the database, and transmits the acquired HTML content to the personal computer via the network. The personal computer receives the HTML content via a network and analyzes tags and the like in the received HTML content. Thereafter, the personal computer can display an image on a predetermined display device provided based on the analysis result.

On the other hand, at present, not only personal computers but also communication terminal devices such as mobile phones and PHSs receive contents described in a structure description language via a network such as a mobile telephone network, and receive the received contents. Can be used to display an image or the like. In particular,
These communication terminal devices are provided by “i” operated by NTT DOCOMO.
Mode ”,“ EZ Access ”operated by IDO, DDI
By using an information providing service such as “EZweb” operated by the company, it is possible to display an image or the like based on the content described in the structure description language.

[0005]

However, the above-mentioned conventional communication terminal devices such as mobile phones and PHS have the following problems. That is, the above-mentioned conventional communication terminal device has a display device provided in the communication terminal device for contents supplied via an information providing service site (a site dedicated to the communication terminal device) corresponding to the communication terminal device. Can be displayed without any problem.

However, HTML content supplied via the general Internet (general site) is not created on the assumption of display by a display device provided in the above-mentioned conventional communication terminal device. It is created on the assumption that an image is displayed by a personal computer or the like. That is, the size of the image represented by the HTML content as described above exceeds the size of the image that can be displayed by the display device provided in the conventional communication terminal device.

As a result, in the conventional communication terminal device, when the HTML content is received, only a part of the image originally expressed by the HTML content can be displayed.

At present, the number of sites dedicated to communication terminal devices that can be used is very small compared to the number of general sites.
Therefore, according to the communication terminal device that can use the general site, much more information can be utilized than the current situation. Therefore, the HT supplied via the general site
There is a demand for a communication terminal device that can appropriately display an image represented by ML content.

The present invention has been made in view of the above points, and provides an image represented by HTML content supplied through a general network such as the Internet in a communication terminal device such as a mobile phone or a PHS. It is an object of the present invention to provide an image display device that can appropriately display an image on a displayed display device.

[0010]

An image display device according to the present invention generates an image using information described in a structure description language transmitted via a network, and converts the generated image in a full-scale state. The configuration includes a storage unit that stores the image and an image processing unit that uses the stored image to generate a display image to be displayed on a display unit having a displayable area smaller than the size of the image.

In the image display apparatus according to the present invention, the image processing means selects a reference image to be used for generating a display image from the images stored in the storage means according to the display area designated by the operator for the display image. , A display image is generated using the selected reference image.

[0012] In the image display apparatus of the present invention, the image processing means generates a display image from an image obtained by enlarging or reducing the image stored in the storage means in accordance with the scale factor specified by the operator for the display image. , And a display image is generated using the selected reference image.

According to these configurations, the content (information) described in the structure description language received from the predetermined information providing apparatus is analyzed to generate a full-scale virtual display image originally expressed by the content. Then, based on the enlargement operation or reduction operation performed by the operator,
An enlarged or reduced virtual display image is generated. Furthermore, based on the display origin set by the scroll operation performed by the operator, a display image having a size matching the displayable area of the display unit is generated from the enlarged or reduced virtual display image. I have. This makes it possible to appropriately display an image represented by content supplied via a network such as the general Internet on a display device provided in a communication terminal device such as a mobile phone or a PHS.

In the image display apparatus according to the present invention, the image processing means generates the current display image by reducing the image so that the entire image stored in the storage means is displayed in the displayable area of the display means. It adopts the configuration to do.

The image display device of the present invention employs a configuration in which the image processing means generates a current display image representing a range occupied by a previous display image in an image stored in the storage means.

According to these arrangements, the operator can easily confirm which part of the image stored in the storage means corresponds to the displayed image, so that the operator can effectively perform the necessary operations. Information can be read.

The image display device of the present invention employs a configuration including a cursor display means for displaying a cursor so as to overlap an object in a display image in accordance with an instruction from an operator.

According to this configuration, the operator can overlap the cursor with the desired object and click by using the predetermined operation button without moving the cursor so as to overlap the desired object in the display image. it can. Thereby, various contents can be browsed efficiently.

[0019] The image display device of the present invention is configured such that the cursor display means displays a cursor so as to overlap an object located at a specific position in the display image every time a new display image is displayed by the display means. take.

According to this configuration, even when the object on which the cursor is placed is out of the range of the display image and cannot be displayed by the scroll operation, the enlargement operation, or the reduction operation, the operator can select the desired object in the display image. The cursor can be overlaid on a desired object and clicked without moving the cursor using a predetermined operation button so as to overlap with. Thereby, various contents can be browsed more efficiently.

The communication terminal device of the present invention employs a configuration provided with any one of the image display devices described above.

According to this configuration, an image represented by content (information described in a structure description language) supplied via a network such as the general Internet is displayed on a display unit provided in the communication terminal device. It can be displayed properly.

In the image display system according to the present invention, the information providing device transmits information described in a structure description language to a terminal device via a network, and the terminal device
An image is generated using the information transmitted from the information providing device via the network, the generated image is stored in a storage unit in a full scale state, and the size of the image is calculated using the stored image. Also, a display image to be displayed on a display unit having a small displayable area is generated.

According to this system, the content (information) described in the structure description language received from the predetermined information providing device is analyzed, and a virtual display image originally expressed by the content is generated. A virtual display image that is enlarged or reduced is generated based on the enlargement operation or reduction operation performed by. Furthermore, based on the display origin set by the scroll operation performed by the operator, a display image having a size matching the displayable area of the display unit is generated from the enlarged or reduced virtual display image. I have. This makes it possible to appropriately display an image represented by content supplied via a network such as the general Internet on a display device provided in a communication terminal device such as a mobile phone or a PHS.

In the image display system according to the present invention, the information providing apparatus generates an image using information described in a structure description language transmitted via a network, and stores the generated image in a full-scale state. And transmits the image to the terminal device via the network, and the terminal device uses the image transmitted from the information providing device via the network to reduce the size of the image. A display image to be displayed on a display unit having a small displayable area is also generated and displayed on the display unit, and the information provision on the display image via the network is provided with information relating to a scale factor specified by an operator. Transmitted to the device, the information providing device stores the information in the storage unit according to the information received from the terminal device via the network. Image enlarged or to shrink, and transmits an image is enlarged or reduced with respect to the terminal apparatus via the network.

According to this system, the predetermined information providing device analyzes the content desired by the terminal device to generate a full-scale virtual display image, and then, based on the enlargement operation or the reduction operation performed by the terminal device. Thus, an enlarged or reduced virtual display image is generated. Further, the predetermined information providing device transmits the generated enlarged or reduced virtual display image to the terminal device,
The terminal device, without enlarging or reducing the virtual display image, based on the display origin set by the scroll operation performed by the operator, from the enlarged or reduced virtual display image, the displayable area of the display unit Is generated. This makes it possible to appropriately display an image represented by content supplied via a network such as the general Internet on a display device provided in a communication terminal device such as a mobile phone or a PHS. Furthermore, since the communication terminal device does not need to actually generate a display image using the virtual display image, the scale and power consumption of the device main body can be suppressed.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The gist of the present invention is to store an image generated using information described in a structure description language transmitted via a network in a full-scale state, and to store the stored image. To generate a display image to be displayed on display means having a displayable area smaller than the size of the image.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. (First Embodiment) FIG. 1 is a schematic diagram showing a configuration of a communication system according to a first embodiment of the present invention. The terminal device 101 including the image display device according to the present embodiment is connected to a network. That is, the terminal device 10
1 is connected to a gateway, that is, an information providing apparatus 103 via a mobile network 102. Here, the gateway corresponds to an Internet connection service server (i-mode, WAP, or the like). The information providing apparatus 103 is connected to the Internet via a public network 104, and is connected to various information providing apparatuses (here, for example, the information providing apparatus 105 and the information providing apparatus 106). In other words, the terminal device 101 is connected to a network including all of a mobile network, a gateway, a public network, and the Internet.

The terminal device 101 specifies the URL of the desired HTML content and transmits it to the portable network 102. The information providing device 103 transmits the URL specified by the terminal device 101 to the public network 104. This U
RL compatible information providing device (here, information providing device 1
05) is the HT specified by the terminal device 101.
ML contents via the public network 104 to the information providing apparatus 1
Send to 03. The information providing apparatus 103 transmits the HTML content received from the information providing apparatus 105 to the mobile network 102.
To the terminal device 101 via the. As a result, the terminal device 101 can receive the desired HTML content.

FIG. 2 is a block diagram showing a configuration of the terminal device 101 including the image display device according to the first embodiment of the present invention. The terminal device 101 includes a communication unit 202, an operation unit 203, a CPU 201, a display unit 206, a memory 204, and an image memory 205. The terminal device 101 having such a configuration transmits the URL of the desired HTML content to the mobile network 102, analyzes a tag or the like in the HTML content received via the mobile network 102, and based on the analysis result. Image can be displayed. The internal configuration of the CPU 201 will be described with reference to FIG.

FIG. 3 is a block diagram showing an internal configuration of the CPU 201 in the terminal device provided with the image display device according to the first embodiment of the present invention. Note that the same components as those in FIG. 2 in FIG. 3 are denoted by the same reference numerals as those in FIG.

In FIG. 3, the memory 204 stores the received HTML content and outputs the stored HTML content to the HTML reading unit 302. The HTML reading unit 302 analyzes a tag or the like in the HTML content from the memory 204. The operation unit 203 includes various buttons and the like provided on a main surface of a housing on which the terminal device is mounted, and outputs a signal indicating the operation contents of the various buttons by the user to the display control unit 301.

First, the display control unit 301 generates a virtual display image based on the analysis result by the HTML reading unit 302 and outputs it to the image memory 303. The generated virtual display image is stored in the image memory 303. Further, the display control unit 301 performs an operation on the virtual display image stored in the image memory 303 based on a signal indicating the operation content (contents of the enlargement operation and the reduction operation) from the operation unit 203, and Is generated, and the generated virtual display image after calculation is output to the image memory 304. The generated virtual display image after the calculation is stored in the image memory 3.
04. After that, the display control unit 301
An image (ie, a display image) to be displayed on the display unit 206 is generated based on a signal indicating the operation content (scroll operation) from the operation unit 203 from the calculated virtual display image stored in the image memory 304, The display unit 206 displays the generated display image.

Next, the operation of the terminal device having the above configuration will be described with reference to FIG. FIG. 4 (a)
FIG. 3 is a schematic diagram illustrating a state (first example) of generating a display image by a terminal device including the image display device according to the first embodiment of the present invention; FIG. 4B shows Embodiment 1 of the present invention.
FIG. 5 is a schematic diagram showing a state (second example) of generating a display image by a terminal device provided with the image display device according to the first embodiment. FIG.
(C) shows how a terminal device including the image display device according to the first embodiment of the present invention generates a display image (third image).
It is a schematic diagram which shows an example. FIG. 4D is a schematic diagram illustrating a state (fourth example) of generating a display image by the terminal device including the image display device according to the first embodiment of the present invention.

Referring to FIG. 4A, in the present embodiment, first, based on the analysis result of the received HTML content by using a tag or the like, an image originally expressed using the HTML content, That is, this HT
An image (hereinafter, referred to as a “virtual display image”) 401 that is originally displayed on a display device such as a display by a personal computer or the like is generated using the ML content.

Second, an operation is performed on the virtual display image based on the operation contents (enlargement operation and reduction operation contents) by the user of the terminal device. That is, the virtual display image is enlarged or reduced according to the scale factor set by the operation content of the user, and the virtual display image 4 after the operation is calculated.
02 is generated. FIG. 4A shows the virtual display image 402 after the calculation, which is generated when neither the enlargement operation nor the reduction operation is performed by the user.

Third, after the display origin (O ₁ ) of the display image in the virtual display image 402 after the calculation is set based on the operation contents (contents of the scroll operation) by the user of the terminal device, Out of the virtual display image 402 of
With reference to the set display origin, a reference image 403 having a size that matches a displayable area (for example, resolution or the number of dots) of the display unit 206 is extracted as a display image.
Thereby, the display image 403 is generated. The generated display image 403 is appropriately displayed on the display unit 206.

As shown in FIG. 4B, all the virtual display images 401 are displayed on the display unit 20 according to the operation contents of the user.
6, the virtual display image 401 is displayed on the display unit 2
The size is reduced to be the same as the size of the displayable area 06. Thereby, the virtual display image 404 after the calculation is obtained.
Is generated. In this case, the calculated virtual display image 4
04 is the reference image 404, that is, the display image 404 as it is.
Becomes Naturally, the display origin is O ₂ . The generated display image 404 is appropriately displayed on the display unit 206.

Further, as shown in FIG. 4C, when a reduction operation is performed by the user, the virtual display image 401 is displayed.
Is reduced based on a reduction ratio (scale ratio) determined by a user's reduction operation. It goes without saying that the thinning process is performed on the virtual display image 401 by this reduction. Thereby, the virtual display image 405 after the calculation is generated. Then, after the origin (O ₃ ) of the display image in the calculated virtual display image 405 is set based on the content of the user's operation (contents of the scroll operation), from the calculated virtual display image 405, With reference to the set display origin, a reference image 406 having the same size as the displayable area of the display unit 206 is extracted as the display image 406. As a result, a display image 406 is generated. The generated display image 406 is appropriately displayed on the display unit 206.

Finally, as shown in FIG. 4D, when the user performs an enlargement operation, the virtual display image 401 is displayed.
Is enlarged based on the enlargement ratio (scale factor) determined by the user's enlargement operation. Due to this enlargement, a replacement process (for example, a process of replacing a one-dot configuration image in the virtual display image 401 with an image having a predetermined dot configuration) is performed on the virtual display image 401. Thereby, the virtual display image 407 after the calculation is generated. Thereafter, the origin (O ₄ ) of the display image in the virtual display image 407 after calculation is set based on the content of the user's operation (contents of the scroll operation), and then the virtual display image 4 after calculation.
07, a reference image 408 having the same size as the displayable area of the display unit 206 is extracted as the display image 408 based on the set display origin. As a result, a display image 408 is generated. Generated display image 40
8 is appropriately displayed on the display unit 206.

In addition, the display unit 206 as described above
When the user performs an operation (hereinafter, referred to as a “scroll operation”) for requesting to change the range of the display image in the virtual display image after the calculation after the display by Done.

That is, first, based on the scroll operation by the user, the display origin of the display image in the calculated virtual display image generated at the present time is changed and updated. Secondly, a display image having the same size as the displayable area of the display unit 206 is extracted from the calculated virtual display image based on the updated display origin. As a result, a display image is generated. This display image is appropriately displayed on the display unit 206.

The specific operation of the terminal device having the above configuration will be further described with reference to FIG. FIG. 5 is a flowchart illustrating an operation of the terminal device including the image display device according to the first embodiment of the present invention.

First, a step (hereinafter, referred to as “ST”) 501.
In, the terminal device 101 specifies a URL (here, a URL) corresponding to desired HTML content and transmits the URL to the information providing device 103 via the mobile network 102. Thereafter, the information providing apparatus 103 sends the URL to the information providing apparatus 105 corresponding to the URL via the public network 104.
Send As a result, the information providing apparatus 105
HTML content corresponding to the RL is transmitted to the public network 10
4 to the information providing apparatus 103. As a result, the information providing apparatus 103 transmits the H
The TML content is transmitted to the terminal device 101.

In ST502, terminal device 101
HTM from the information providing device 105 via the mobile network 102
L content is received. In ST 503, the received HTML content is stored in memory 204. The stored HTML content is output to the HTML reading unit 302.

In ST504, the HTML reading unit 30
In 2, the tag and the like in the HTML content are analyzed. In ST505, display control section 301 generates a virtual display image based on the analysis result in HTML reading section 302. The generated virtual display image is stored in the image memory 303 in a full scale state. Here, the full scale corresponds to the size of the entire image intended by the sending side (here, the information providing apparatus 105).

In ST506, the display control unit 301 compares the size of the virtual display image stored in the image memory 303 with the size of the displayable area of the display unit 206. That is, the size of the virtual display image is
When the virtual display image is equal to or smaller than the displayable area of No. 06, the virtual display image may be an image appropriately displayed on the display unit 206 without calculation (for example, HTML content on a mobile phone-only site). Be recognized. In this case, the process moves to ST507. Conversely, when the size of the virtual display image is larger than the size of the displayable area of the display unit 206, the virtual display image is an image that is not properly displayed on the display unit 206 without any operation (for example, a general image). (HTML content on the site). In this case, the process moves to ST508.

If the size of the virtual display image is smaller than the size of the displayable area of display unit 206, in ST507, the virtual display image stored in image memory 303 is displayed by the same method as the conventional method. It is displayed on the unit 206. That is, for example, after the virtual display image stored in the image memory 303 is stored in the image memory 304,
The display control unit 301 displays the display unit 206 as a display image.
Will be displayed. Thereafter, the process proceeds to ST501.

On the other hand, the size of the virtual display image is
If it is larger than the size of the displayable area of ST6, ST5
In 08, the display control unit 301 generates a display image. That is, first, the virtual display image stored in the image memory 303 is temporarily stored in the image memory 304 as the virtual display image after the calculation.

Further, from the virtual display image after the calculation stored in the image memory 304, display on the display unit 206 is possible based on a predetermined display origin (for example, display origin O ₆ : see FIG. 4A). A display image having a size matching the region is extracted. As a result, a display image is generated. S
In T509, the generated display image is displayed on the display unit 206 by the display control unit 301.

Thereafter, in ST510, whether or not a scroll operation has been performed by the user is determined based on a signal indicating the content of the operation from operation unit 203, on display control unit 301.
Is determined by If the display control unit 301 determines that the scroll operation has not been performed, the process proceeds to S
The process moves to T512.

When the display control unit 301 determines that the scroll operation has been performed, a display image is generated in ST511. The generation of a specific display image will be further described with reference to FIG. FIG.
FIG. 3A is a flowchart illustrating generation of a display image at the time of a scroll operation by a terminal device including the image display device according to the first embodiment of the present invention.

In ST601, first, the current display origin is changed and updated according to the degree of the scroll operation by the user. Further, in ST602, a display image having a size matching the displayable area of the display unit 206 is extracted from the virtual display image after calculation stored in the image memory 304 with reference to the updated display origin. You. A specific extraction method is as described above. Thereby, a new display image is generated. After this, the processing is S
The process moves to T512.

Referring again to FIG. 5, in ST512, display control section 301 determines whether or not the user has performed an enlargement operation or a reduction operation based on a signal indicating the operation content from operation section 203. . If the display control unit 301 determines that the enlargement operation and the reduction operation have not been performed, the process proceeds to ST509 described above.

If the display control unit 301 determines that the enlargement operation or the reduction operation has been performed, the process goes to ST51.
At 3, a display image is generated. FIG. 6B shows a specific example of the generation of the display image, focusing only on the difference from the generation of the display image in the scroll operation described above.
This will be described with reference to FIG. FIG. 6B is a flowchart illustrating generation of a display image at the time of an enlargement or reduction operation by the terminal device including the image display device according to the first embodiment of the present invention.

In ST603, calculation is performed on the virtual display image stored in the image memory 303 based on the degree of reduction (enlargement) operation (scale reduction) by the user. That is, the virtual display image is reduced (enlarged) by the user.
The virtual display image after the calculation is generated by being reduced or enlarged by the scale factor set by the operation.
By this calculation, a thinning process is performed at the time of reduction, and a replacement process is performed at the time of enlargement.

More specifically, when the virtual display image is reduced to, for example, a quarter by the user's reduction operation, if the width of the virtual display image is, for example, 640 dots, the horizontal direction of the virtual display image is reduced. An operation is performed so as to thin out the dots of. Conversely, when the virtual display image is enlarged, for example, by a factor of two by the user's enlargement operation, if the width of the virtual display image is 640 dots, the horizontal dots of the virtual display image are the same as this dot. For example, an operation is performed to replace with 2 dots. Thereby, a virtual display image after calculation is newly generated.

In ST 604, the newly generated virtual display image after the calculation is stored in image memory 304.
In ST605, after the display origin of the display image in the virtual display image after calculation is set, it matches with the displayable area of the display unit 206 based on the set display origin from the virtual display image after calculation. A display image having a size is extracted. Thereby, a new display image is generated. Thereafter, the process proceeds to ST509. ST509
In, the display image newly generated in ST511 or ST513 is displayed on the display unit 206.

After that, the same operation as described above is performed until the terminal device 101 specifies any URL included in the HTML content. When terminal device 101 specifies any URL, the process proceeds to ST501. The above is the specific operation of the terminal device including the image display device according to the present embodiment.

Next, examples (first to third examples) of realizing the operation unit 203 in the terminal device provided with the image display device according to the present embodiment will be described with reference to FIGS. 8 to 10, respectively. FIG. 8 is a schematic diagram illustrating a first example of an operation unit provided on one main surface of the terminal device including the image display device according to the first embodiment of the present invention. FIG. 9 (a)
FIG. 3 is a schematic diagram showing a second example of the operation unit provided on one main surface of the terminal device including the image display device according to the first embodiment of the present invention. FIG. 9B is a schematic diagram illustrating an operation unit provided on the other main surface of the terminal device including the image display device according to the first embodiment of the present invention. FIG. 10 is a schematic diagram illustrating a third example of the operation unit provided on one main surface of the terminal device including the image display device according to the first embodiment of the present invention.

In terminal devices such as mobile phones and PHSs, the types of operation components (for example, buttons) that can be used in these operation units are limited. In addition, it is often difficult for a user to operate the terminal device (for example, an operation of a touch panel or the like) using both hands outdoors. Even if the user can operate the terminal device using both hands, the safety of the user may be impaired. Therefore, it is desirable that the operation of the terminal device can be executed by one hand of the user. Furthermore, since the user normally grips the terminal device with a finger other than the thumb, it is preferable that the operation of the terminal device can be realized by the user's thumb.
In the present embodiment, in view of such a point, the operation unit of the terminal device is realized as follows.

First, a first example will be described with reference to FIG. As shown in FIG. 8, on one main surface of a housing 800 of a terminal device provided with the image display device according to the present embodiment, a display unit 805 that displays a display image, and an enlargement operation or reduction of the display image is performed. A two-point switch 801 for performing an operation, and four scroll keys arranged at positions forming a ring shape with each other, that is, a scroll key (up) 803a and a scroll key (down) 803
b, a scroll key (left) 803c, a scroll key (right) 803d, and a cursor movement key 80 arranged at the center of a ring formed by the four scroll keys
2, a numeric keypad 804 for inputting a telephone number or the like,
Is provided.

The zoom key 801 has two buttons (up and down buttons, left and right buttons, etc.). The user performs an enlargement operation by pressing one of the two-point buttons (for example, the up button or the left button), and performs a reduction operation by pressing the other (for example, the down button or the right button) of the two-point buttons. . Specifically, for example, the user
The display image is enlarged while one of the two-point buttons is pressed, and the display image is reduced while the other of the two-point buttons is pressed. The time during which the two-point button is pressed by the user corresponds to the above-mentioned “degree of enlargement or reduction desired by the user”.

The cursor movement key 802 has a lever-shaped button. The user operates the cursor movement key 80
By inclining 2 in a predetermined number of directions (here, up, down, left, and right directions), a direction-specific signal can be output to the CPU 201 inside the terminal device. For example, the user moves the cursor displayed on the display unit 805 upward (downward in the figure) while inclining the cursor movement key 802 upward (downward in the figure). While the cursor movement key 802 is tilted rightward in the figure (leftward in the figure), the cursor displayed on the display unit 805 can be moved rightward in the figure (leftward in the figure). . Further, the user operates the cursor movement key 80
By pressing 2 in a direction perpendicular to the main surface, it is possible to click a predetermined object (a transmission target, an operation target such as a box, etc.) overlapping the cursor in the display image.

The user operates the scroll key (up) 803
a, while pressing the scroll key (down) 803b, the scroll key (left) 803c, and the scroll key (right) 803d, a scroll operation can be performed in a desired direction on the display image. The time during which each scroll key is pressed by the user corresponds to the above-described “degree of scroll operation desired by the user”.

Zoom key 801, cursor movement key 80
It is preferable that the scroll keys 2 and the scroll keys are provided within a range where the thumb can abut when the user grips the housing 800. Accordingly, the user can perform a scroll operation, a cursor movement, and an enlargement / reduction operation on the display image with respect to the display image while holding the housing 800 with one thumb of the hand holding the housing 800. It can be carried out.

Note that instead of pressing the zoom key 801,
By controlling the volume (variable control in predetermined steps), it is also possible to perform an enlargement operation and a reduction operation on the display image. That is, the display image can be enlarged while the user rotates the volume in the normal rotation direction, and the display image can be reduced while the user rotates the volume in the reverse rotation direction. Further, the user can enlarge or reduce the display image at a speed corresponding to the rate at which the volume is rotated.

When the zoom key 801 is used, the speed at which the display image is enlarged or reduced is constant, but when the volume is used, the display image is enlarged or reduced by rotating the volume quickly. If the volume is rotated slowly, the speed at which the displayed image is enlarged or reduced is reduced. This allows the user to perform an enlargement or reduction operation that matches the user's operational feeling.

Next, a second example will be described with reference to FIGS. 9 (a) and 9 (b). 9 (a) and 9 (b) are the same as those in FIG.
The same reference numerals as those in FIG. 8 denote the same parts, and a detailed description thereof will be omitted.

As shown in FIG. 9A, on one main surface of the housing 900 of the terminal device provided with the image display device according to the present embodiment, the zoom key 8 shown in FIG.
01 has been removed. As shown in FIG. 9B, on the other main surface of the housing 900 of the terminal device provided with the image display device according to the present embodiment, the user
A shift button 903 is provided in a range where the index finger comes into contact when the user grips 00.

The cursor movement key 90 in FIG.
1 has the same configuration as the cursor movement key 802 in FIG. 8 except for the following points. That is, the cursor movement key 901 functions similarly to the zoom key 801 in FIG. 8 when the user moves the cursor in a predetermined direction while the shift button 903 is pressed.
For example, while the user presses the shift button 903 and tilts the cursor movement key 901, for example, in the upward direction in the figure, the display image is enlarged. During tilting in the direction, the display image is reduced.

Scroll key (up) 902a, scroll key (down) 902b, scroll key (left) 902c
The scroll key (right) 902d has the same configuration as the zoom key 801 in FIG. 8 except for the following points. That is, each scroll key corresponds to the shift button 9
In the state where 03 is pressed, when pressed by the user, it functions in the same way as the zoom key 801 in FIG. For example, while the user is pressing the shift button 903 and pressing one of the scroll keys, the display image is enlarged, and conversely, while pressing the other scroll keys, the display image is enlarged. , The display image is reduced.

When the shift button 903 is pressed, either the cursor movement key 901 or each scroll key may function in the same manner as the zoom key 801 in FIG.

Finally, a third example will be described with reference to FIG. As shown in FIG. 10, a switching button 1001 is provided on one main surface of a housing 1000 of the terminal device provided with the image display device according to the present embodiment. Once the switch button 1001 is pressed, the shift state is set, and when the switch button 1001 is pressed again, the shift state is released. Thereafter, similarly, when the switch button 1001 is sequentially pressed, the shift state is sequentially set and released.

Cursor movement key 1002 in FIG.
Has the same configuration as the cursor movement key 802 in FIG. 8 except for the following points. That is, the cursor movement key 1002 functions in the same manner as the zoom key 801 in FIG. 8 only when the shift state is set by pressing the switching button 1001 and when the user tilts in a predetermined direction.

Scroll key (up) 1003a, scroll key (down) 1003b, scroll key (left) 10
03c and the scroll key (right) 1003d have the same configuration as the zoom key 801 in FIG. 8 except for the following points. That is, each scroll key functions in the same manner as the zoom key 801 in FIG. 8 when pressed by the user only when the shift state is set by pressing the switching button 1001.

When the shift state is set by pressing the switch button 1001, one of the cursor movement key 1002 and each of the scroll keys may function in the same manner as the zoom key 801 in FIG. .

Further, the switching button 1001 may be provided in a range where the user's thumb or forefinger contacts when the user grips the housing 1000. Thereby, the user holds the housing 1000,
The scroll operation on the display image, the movement of the cursor, and the enlargement and reduction operations on the display image
000 can be performed with one thumb in the hand holding the 000.

The implementation example of the operation unit 203 in the terminal device including the image display device according to the present embodiment has been described with reference to FIGS.
Is not limited to the above method, and can be changed as appropriate.

Next, a method of displaying a display image more effectively when performing an enlargement operation or a reduction operation on the display image will be described with reference to FIG. FIG. 7 is a schematic diagram illustrating a state of a display image display method by a terminal device including the image display device according to the first embodiment of the present invention.

First, from the virtual display image 701, the display unit 20
When the image 702 to be displayed on the image 6 is selected as shown in FIG. 7, as described above, the image obtained by reducing or enlarging the image 702 is substantially displayed on the display unit 206.
Will be displayed. Thereafter, when the user performs an enlargement operation, a reduction operation, and a scroll operation, it is difficult to understand which part of the virtual display image the display image displayed on the display unit 206 is located at. May be. In such a case, it becomes difficult for the user to effectively read various information from the display image.

Therefore, in the present embodiment, when the user presses one of the switching buttons (see FIGS. 8 to 10) provided on the operation unit 203 of the terminal device, a normal An image 703 in which the virtual display image is reduced is displayed instead of the display image. Furthermore, this image 7
At 03, a frame 704 indicating the range of the display image 702 previously displayed on the display unit 206 is also displayed. The method of generating the reduced image 703 of the virtual display image is as described above (see FIG. 4B).

Thereafter, the user presses the switch button again, so that the virtual display image is reduced to the image 70.
Instead of 3, a normal display image is displayed. Thereafter, every time the user sequentially presses the switching button, the display unit 206 sequentially displays the reduced image 703 of the virtual display image and the normal display image. Thereby, the user can display an image corresponding to any part of the virtual display image on the display unit 20.
6, it is possible to easily confirm whether the user is watching the information, and necessary information can be read effectively.

Next, a method for the user to operate the cursor more efficiently will be described with reference to FIG.
FIG. 11 is a schematic diagram illustrating a state of a cursor operation in a terminal device including the image display device according to the first embodiment of the present invention.

In a terminal device such as a mobile phone or a PHS, it is difficult to freely move a cursor (pointer) displayed on a display device using a mouse or the like, like a personal computer. . On the other hand, HTM
Images represented by L content (homepages, etc.)
Are often performed by pointing a cursor to an object having a switch function (a transmission button, a URL, an input area, or the like) and clicking. From this, it is clear that the cursor does not need to be placed at a position other than the object having the switch function.

Therefore, in this embodiment, the cursor is
It is arranged so as to overlap an object having a switch function that is always present in the display image. Specifically, FIG.
, A display image 1100 displayed on the display unit 805
For example, when the objects 1101 to 1105 exist as objects having a switch function, the cursor is first placed so as to overlap the object 1105. Thereafter, by tilting the cursor movement key in FIGS. 8 to 10 to the right, the cursor is arranged so as to overlap the object 1101. That is, every time the cursor movement key is tilted, the cursor moves so as to overlap the object located in the direction in which the cursor movement key is tilted. Thereafter, when the cursor movement key is sequentially tilted downward, leftward and downward, the cursor moves to the object 110.
2. Object 1103 and object 1104
Are arranged so as to sequentially overlap.

As a result, the user moves the cursor using predetermined operation buttons so as to overlap with a desired object in the display image. The cursor can be overlaid on the desired object and clicked without requiring a plurality of pressing operations on the button). Thereby, various HTML contents can be browsed efficiently.

Further, when a scroll operation, an enlargement operation, or a reduction operation is being performed, the object on which the cursor is placed may be out of the range of the display image displayed on the display unit 805 and may not be displayed. Therefore, in the present embodiment, in such a case, the specific position (the uppermost part, the upper leftmost part, or the like) in the currently displayed image is
The cursor is automatically placed on the object that exists in. A specific example will be described with reference to FIG. FIGS. 12A to 12F are schematic diagrams illustrating a state of a cursor arranged in a display image displayed by the terminal device including the image display device according to the first embodiment of the present invention. .

First, from the virtual display image 701 to the display unit 80
When the image 1201a to be displayed on the image 5 is selected as shown in FIG.
An image in which 1a is reduced or enlarged is displayed on the display unit 805 substantially as a display image. After the display image is displayed, the cursor is arranged so as to overlap the object located at a specific position in the display image. In this case, although a plurality of objects exist in the display image, the cursor is arranged so as to overlap the object 1201b located at a specific position (here, the uppermost part) in the display image.

Similarly, in FIGS. 12B to 12F, after the display image is displayed, the cursor is arranged so as to overlap with the objects 1202b to 1202f, respectively.

As a result, even when the object on which the cursor is placed is out of the range of the display image displayed on the display unit 805 due to the scrolling operation, the enlarging operation, or the reducing operation, the user does not need to display the object. Moving the cursor using a predetermined operation button so as to overlap with a desired object (usually, in order to move the cursor in this way, a plurality of pressing operations on a plurality of types of buttons are required) )
Instead, a cursor can be placed on a desired object and clicked. Thus, various HTML contents can be browsed more efficiently.

As described above, in the present embodiment, first, the HTML content (content described by the structure description language) received from the predetermined information providing device is analyzed, and the full content originally expressed by the HTML content is analyzed. After the virtual display image of the scale is generated, a virtual display image that is enlarged or reduced is generated based on an enlargement operation or a reduction operation performed by the user. Further, a display image having a size that matches the displayable area of the display unit is generated from the enlarged or reduced virtual display image based on the display origin set by the scroll operation performed by the user. . As a result, H supplied via a general network such as the Internet can be used.
An image represented by the TML content can be appropriately displayed on a display device provided in a communication terminal device such as a mobile phone or a PHS. (Embodiment 2) In this embodiment, in Embodiment 1, a predetermined information providing apparatus generates a virtual display image using HTML content corresponding to a URL desired by a terminal device, and the terminal device After generating a virtual display image enlarged or reduced using the virtual display image based on the performed enlargement operation or reduction operation, transmitting the enlarged or reduced virtual display image to the terminal device via the mobile network. Will be described.

FIG. 13 is a block diagram showing a configuration of an information providing device 103 for transmitting a display image to a terminal device provided with an image display device according to the second embodiment of the present invention. In FIG. 13, the memory 1303 stores the received HT
The ML content is stored, and the stored HTML content is output to the HTML reading unit 1304. The HTML reading unit 1304 analyzes a tag or the like in the HTML content from the memory 1303.

The communication unit 1302 transmits the information regarding the generation of the display image received from the terminal device (here, the terminal device 101) via the portable network 102 (see FIG. 1) to the CPU 13.
Output to 01. Further, the communication unit 1302 transmits the display image on which the encoding process has been performed by the encoding unit 1307 to the terminal device 101 via the mobile network 102.

First, the CPU 1301 generates a virtual display image based on the analysis result by the HTML reading unit 1304 and outputs it to the image memory 1305. The generated virtual display image is stored in the image memory 1305. Next, C
The PU 1301 performs a calculation on the virtual display image stored in the image memory 1305 based on the information on the generation of the display image from the communication unit 1302, thereby generating a virtual display image after the calculation, and generating the generated virtual display image. Is output to the image memory 1306. The generated virtual display image after the calculation is stored in the image memory 1306. Further, the CPU 1301 performs an encoding process on the virtual display image after computation stored in the image memory 1306 using a predetermined encoding method such as the MPEG method. After this, C
The PU 1301 transmits the encoded virtual display image subjected to the encoding process to the terminal device 101 via the communication unit 1302.

FIG. 14 is a block diagram showing an internal configuration of a CPU in a terminal device provided with an image display device according to the second embodiment of the present invention. FIG. 3 in FIG.
The same reference numerals as in FIG. 3 denote the same parts as in FIG. 3, and a detailed description thereof will be omitted.

In FIG. 14, a memory 1401 stores an encoded virtual display image received from the information providing apparatus 103 and having been subjected to an arithmetic operation, and outputs the virtual display image to a decoding unit 1402. The decoding unit 1402 applies a predetermined decoding method (that is, the encoding unit 1 in the information providing apparatus 103) to the encoded virtual display image stored in the memory 1401 after the operation.
By performing a decoding process using a decoding method corresponding to the encoding method used by 307), the virtual display image after calculation (that is, the display image stored in the image memory 1306 in the information providing apparatus 103) is obtained. Generate.
Accordingly, the display control unit 301 uses the virtual display image after the calculation generated by the decoding unit 1402, and
06, a display image to be displayed can be generated.

Next, the terminal device 101 having the above configuration
The operation of the information providing apparatus 103 will be described with reference to FIG. 15, focusing only on the differences from the first embodiment. FIG. 15 is a flowchart illustrating the operation of the terminal device 101 including the image display device according to the second embodiment of the present invention and the operation of the information providing device that transmits a display image to the terminal device 101.

The processing in ST1501 is the same as the processing in ST501 in the first embodiment (FIG. 5), and a detailed description thereof will be omitted. ST1502
, The information providing apparatus 103 receives the HTML content from the information providing apparatus 105 via the public network 104. In the information providing apparatus 103, the received H
The TML content is stored in the memory 1303.
The stored HTML content is stored in the HTML reading unit 13.
04 is output.

In ST1503, HTML reading unit 1
At 304, tags and the like in the HTML content are analyzed. Thereafter, the CPU 1301 causes the HTM
A virtual display image is generated based on the analysis result in the L reading unit 1304. The generated virtual display image is
It is stored in the image memory 1305.

In ST 1504, CPU 1301 compares the size of the virtual display image stored in image memory 1305 with the size of the displayable area of display unit 206 in terminal device 101. That is, when the size of the virtual display image is equal to or smaller than the size of the displayable area of the display unit 206, the virtual display image may be an image that is appropriately displayed on the display unit 206 without being calculated. Be recognized. In this case, the process moves to ST1505. The processing in this case will be described later. Conversely, when the size of the virtual display image is larger than the size of the displayable area of the display unit 206, the virtual display image
It is recognized that the image is not properly displayed on the display unit 206 unless any operation is performed. In this case, the process moves to ST1507.

If the size of the virtual display image is larger than the size of the displayable area of display unit 206, ST1507
, The CPU 1301 controls the image memory 1305
Is temporarily stored in the image memory 1306 as the virtual display image after the calculation. Further, the encoded virtual display image stored in the image memory 1306 is subjected to encoding processing using an encoding method of the MPEG method by the encoding unit 1307. The calculated virtual display image after the encoding process is output to the communication unit 1302 by the CPU 1301.

In ST 1508, the encoded virtual display image subjected to the encoding process is transmitted by communication section 1302 to terminal apparatus 101 via portable network 102. Thereby, in the terminal device 101, the information providing device 103
Are stored in the memory 1401 and the decoding unit 14
02 is output. In the decoding unit 1402, a decoded virtual display image is generated by performing decoding processing on the encoded virtual display image subjected to the arithmetic processing. The generated virtual display image after the calculation is stored in the image memory 304.

In ST1509, display control section 301
Accordingly, a display image having a size that matches the displayable area of the display unit 206 is extracted from the calculated virtual display image stored in the image memory 304 with reference to a predetermined display origin. As a result, a display image is generated. The generated display image is displayed on the display unit 206.

Thereafter, in ST1510, whether or not a scroll operation has been performed by the user is determined by operating section 203.
Display control unit 30 based on a signal indicating the operation content from
1 is determined. If the display control unit 301 determines that the scroll operation has not been performed, the process proceeds to ST1512.

If the display control unit 301 determines that a scroll operation has been performed, a new display image is generated in ST1511. That is, first, the display origin at the present time is changed and updated according to the degree of the user's scroll operation from the operation unit 203. Furthermore, a display image having a size that matches the displayable area of the display unit 206 is extracted from the calculated virtual display image stored in the image memory 304 based on the updated display origin. Thereby, a new display image is generated. Thereafter, the process proceeds to ST1509 described above.
In ST1509, the new display image generated in ST1511 is displayed on display section 206.

On the other hand, if the display control unit 301 determines in ST1510 that the scroll operation has not been performed, the control unit 203 determines in ST1512 whether or not the user has performed an enlargement operation or a reduction operation.
Display control unit 30 based on a signal indicating the operation content from
1 is determined. If the display control unit 301 determines that the enlargement operation and the reduction operation have not been performed, the process proceeds to ST1509 described above.

If the display control unit 301 determines that the enlargement operation or the reduction operation has been performed, the process proceeds to ST15.
At 13, information about the generation of the display image is generated. Here, the information relating to the generation of the display image includes information indicating the degree of reduction or enlargement (scale reduction) desired by the user. Information on the generation of the generated display image is transmitted to the information providing apparatus 103 via the mobile network 102. The information on the display image is stored in the information providing device 1.
03 to the communication unit 1302. Thereafter, the process proceeds to ST1507.

In ST 1507, CPU 1301 performs an operation on the virtual display image based on the information regarding the generation of the display image from terminal device 101. That is, first, based on the degree of reduction (enlargement) (scale reduction) desired by the user of the terminal device 101, the image memory 1
An operation is performed on the virtual display image stored in 305. That is, the virtual display image after calculation is generated by reducing or enlarging the virtual display image by the scale factor set by the user's reduction (enlargement) operation. By this calculation, a thinning process is performed at the time of reduction, and a replacement process is performed at the time of enlargement.

Thereafter, in the information providing apparatus 103, as described above, the generated calculated virtual display image is stored in the image memory 1306, and the encoding unit 1307 uses the MPEG encoding method. An encoding process is performed. Similarly, in ST 1508, the encoded virtual display image subjected to the encoding process is output to communication unit 1302 by CPU 1301, and transmitted to terminal device 101 via mobile network 102.

Thereafter, in ST1509, as described above, the display control section 301 displays the calculated virtual display image stored in the image memory 304 on the display section 206 with reference to a predetermined display origin. A display image having a size matching the possible area is extracted. As a result, a display image is generated. The generated display image is displayed on the display unit 2
06 is displayed. Thereafter, until the terminal device 101 specifies any URL included in the HTML content,
The same operation as described above is performed. Terminal device 101
Specifies any URL, the process goes to ST150.
Move to 1.

On the other hand, if it is determined in ST1504 that the size of the virtual display image is smaller than or equal to the size of the displayable area of display unit 206, in ST1505 the virtual display image stored in image memory 1305 is determined. Is
The image is transmitted as it is to the terminal device 101 via the mobile network 102 as a display image. Thereafter, in ST1506, display image transmitted from information providing apparatus 103 is displayed on display section 206 in terminal apparatus 101. This display image is displayed by the same method as the conventional method.

In the present embodiment, the information providing device 1
03 describes an example in which a calculated virtual display image generated in accordance with an enlargement operation or a reduction operation performed by a user of the terminal device 101 is encoded, and then transmitted to the terminal device 101. The providing device 103 converts the virtual display image after the calculation into information in HTML format (HTML
It is also possible to transmit the content to the terminal device 101. In this case, the terminal device 101 analyzes the HTML content from the information providing device 103 by the HTML reading unit 302, generates a virtual display image after the calculation based on the analysis result, and generates the virtual display image after the calculation. A display image may be generated using the image and displayed on the display unit 206. As a result, the terminal device 10
The amount of information about the virtual display image after the calculation transmitted to 1 can be suppressed.

In this case, however, the terminal device 101
Means that when the user performs an enlargement (reduction) operation,
The virtual display image (HTM) calculated by the information providing apparatus 103
L content), it is necessary to analyze the received HTML content. Generally, the time required for analyzing the HTML content is longer than the time required for the decoding process on the coded signal. Therefore,
It is somewhat difficult for the user to smoothly (larger) display the displayed image.

In view of such a point, the information providing apparatus 10
It is more preferable that No. 3 encodes the virtual display image after the above calculation and transmits it to the terminal device 101. This allows
The terminal device 101 does not need to analyze the HTML content every time it receives the calculated virtual display image from the information providing device 103, that is, decodes the encoded virtual display image after the calculation. Since it is only necessary to perform the conversion process, a display image can be generated at higher speed.
Therefore, the user can enlarge (reduce) the displayed image faster.
Can be displayed.

As described above, in the present embodiment, the predetermined information providing apparatus is provided with the HTM desired by the terminal apparatus.
After analyzing the L content and generating a full-scale virtual display image, a virtual display image that is enlarged or reduced is generated based on an enlargement operation or a reduction operation performed by the terminal device. Further, the predetermined information providing device transmits the generated enlarged or reduced virtual display image to the terminal device, so that the terminal device can perform the scroll operation performed by the user without enlarging or reducing the virtual display image. Based on the set display origin,
A display image having a size matching the displayable area of the display unit is generated from the enlarged or reduced virtual display image. Accordingly, the terminal device can display a display image according to the enlargement operation or the reduction operation performed by the user. Therefore, an image represented by HTML content supplied via a network such as the general Internet can be appropriately displayed on a display device provided in a communication terminal device such as a mobile phone or a PHS. Furthermore, since the communication terminal device does not need to actually generate a display image using the virtual display image, the scale and power consumption of the device main body can be suppressed.

In the above embodiment, the case where the image display device according to the present invention is mounted on a communication terminal device such as a mobile phone or a PHS has been described as an example. It can also be mounted on other communication terminal devices such as terminals, telephones, and personal computers (especially laptop computers equipped with a small display device). In this case, the same effects as those in the above embodiments can be obtained. ADVANTAGE OF THE INVENTION According to the communication terminal device provided with the image display device concerning this invention, the image represented by the HTML content supplied via a network, such as the general internet, is appropriately displayed on the display part provided in this communication terminal device. Can be displayed.

[0118]

As described above, according to the present invention,
An image represented by HTML content supplied through a general network such as the Internet can be appropriately displayed on a display device provided in a communication terminal device such as a mobile phone or a PHS.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a configuration of a communication system according to a first embodiment of the present invention;

FIG. 2 is a block diagram showing a configuration of a terminal device including the image display device according to the first embodiment of the present invention;

FIG. 3 is a block diagram illustrating an internal configuration of a CPU in the terminal device including the image display device according to the first embodiment of the present invention;

FIG. 4 is a schematic diagram showing a state of generating a display image by a terminal device including the image display device according to the first embodiment of the present invention;

FIG. 5 is a flowchart showing an operation of the terminal device including the image display device according to the first embodiment of the present invention;

FIG. 6 is a flowchart showing generation of a display image by the terminal device including the image display device according to the first embodiment of the present invention;

FIG. 7 is a schematic diagram showing a state of a display image display method by a terminal device including the image display device according to the first embodiment of the present invention;

FIG. 8 is a diagram illustrating a first example of the operation unit provided on one main surface of the terminal device including the image display device according to the first embodiment of the present invention;
Schematic showing an example

FIG. 9 illustrates a second operation unit provided on one main surface of the terminal device including the image display device according to the first embodiment of the present invention.
Schematic showing an example

FIG. 10 is a schematic diagram illustrating a third example of the operation unit provided on one main surface of the terminal device including the image display device according to the first embodiment of the present invention;

FIG. 11 is a schematic diagram illustrating a state of a cursor operation in a terminal device including the image display device according to the first embodiment of the present invention;

FIG. 12 is a schematic diagram illustrating a state of a cursor arranged in a display image displayed by the terminal device including the image display device according to the first embodiment of the present invention;

FIG. 13 is a block diagram illustrating a configuration of an information providing apparatus that transmits a display image to a terminal device including the image display device according to the second embodiment of the present invention;

FIG. 14 is a block diagram illustrating an internal configuration of a CPU in a terminal device including the image display device according to the second embodiment of the present invention;

FIG. 15 is a flowchart showing the operation of a terminal device including the image display device according to the second embodiment of the present invention and the operation of an information providing device for transmitting a display image to the terminal device

[Explanation of symbols]

201, 1301 CPU 202, 1302 Communication unit 203 Operation unit 204, 1303, 1401 Memory 205, 303, 304, 1305, 1306 Image memory 206 Display unit 301 Display control unit 302, 1304 HTML reading unit 1307 Encoding unit 1402 Decoding unit

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H04N 1/393 H04B 7/26 109T (72) Inventor Hiroyuki Nagase 4-3-1 Tsunashimahigashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Matsushita Communication Industrial Co., Ltd. (72) Inventor Takeshi Imai 4-3-1 Tsunashimahigashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture F-term (reference) 5B057 CA08 CA12 CB08 CB12 CB16 CC01 CD05 CH08 5C076 AA21 AA22 BA05 BA06 BB03 BB06 CA02 CB02 5C082 BA12 BA27 BB01 BB15 CA04 CA33 CA34 CA81 DA53 MM10 5E501 AB03 AC22 AC25 BA03 EA34 EB05 FA02 FA13 FB04 FB34 5K067 AA34 BB04 BB21 DD52 EE02 EE10 FF16 FF16

Claims (10)

[Claims] A storage means for generating an image using information described in a structure description language transmitted via a network, storing the generated image in a full scale state, and using the stored image. And an image processing means for generating a display image to be displayed on a display means having a displayable area smaller than the size of the image. 2. An image processing means for selecting a reference image used for generating a display image from images stored in a storage means according to a display area designated by an operator for the display image, and selecting the selected reference image. The image display device according to claim 1, wherein a display image is generated by using the image display. 3. An image processing unit selects a reference image used for generating a display image from an image obtained by enlarging or reducing an image stored in a storage unit according to a scale factor specified by an operator for a display image. The image display device according to claim 1, wherein a display image is generated using the selected reference image. 4. The image processing means according to claim 1, wherein said image processing means generates a current display image by reducing said image so that the whole image stored in said storage means is displayed in a displayable area of said display means. The image display device according to claim 1. 5. The image processing device according to claim 1, wherein the image processing means generates a current display image representing a range occupied by a previous display image in the image stored in the storage means.
The image display device according to any one of the above. 6. A system according to claim 1, further comprising a cursor display unit for displaying a cursor so as to overlap an object in a display image in accordance with an instruction from an operator.
The image display device according to any one of claims 1 to 5. 7. The cursor display device according to claim 6, wherein each time a new display image is displayed by the display device, a cursor is displayed so as to overlap an object located at a specific position in the display image. An image display device according to claim 1. 8. A communication terminal device comprising the image display device according to claim 1. 9. An information providing device transmits information described in a structure description language to a terminal device via a network, and the terminal device transmits the information transmitted from the information providing device via the network. To generate an image using the stored image in the storage unit in full scale, and display the image on the display unit having a displayable area smaller than the size of the image using the stored image. An image display system that generates a display image. 10. An information providing apparatus generates an image using information described in a structure description language transmitted via a network, and stores the generated image in a storage unit in a full-scale state. An image is transmitted to a terminal device via the network, and the terminal device has a displayable area smaller than the size of the image using an image transmitted from the information providing device via the network. Generating a display image for display on the display unit, displaying the display image on the display unit, transmitting information regarding the scale ratio specified by the operator for the display image to the information providing apparatus via the network, The information providing device enlarges or reduces an image stored in the storage unit according to information received from the terminal device via the network. The expanded or were reduced image via the network and transmits to the terminal device, an image display system.