JP2008234228A - Access authority assignment system and access method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To appropriately assign an access authority according to zoom operation/behavior for an entire content or an object to which zooming is applied. <P>SOLUTION: A server 1 having access authority information displays, according to the relation between a browser and the entire content or the object, the entire content or the object on a display part while continuously changing the display form thereof according to a zoom operation content by the browse. The server controls the upper limit or lower limit, or the both of the degree of zoom in a client terminal C. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a browsing authority technique for the entire content or object to which zooming is applied.

  Conventionally, for example, in order to prohibit browsing of important files, there has been a system in which access restriction to contents according to the level of a user of a terminal is provided.

Here, when displaying each object selected from the content, the initial screen of the display information of the content displays only a small size or a small amount of information, and a large size in accordance with a zoom-in operation that zooms in a direction in which the zoom rate increases. Alternatively, a lot of information is gradually displayed on the display, and the zoom operation / behavior is described so that when the zoom rate reaches a specified value, the content is switched to the true content. A technology capable of jumping to the content is disclosed (for example, see Patent Document 1).
JP 2007-34960 A

  However, with the conventional technique for restricting browsing, it is not possible to appropriately grant access authority according to the zoom operation / behavior for the entire content or object to which zooming is applied.

  Accordingly, an object of the present invention is to appropriately grant an access authority according to the zoom operation / behavior for the entire content or object to which zooming is applied.

  According to the first aspect of the present invention, there is provided a client for continuously changing the entire content or the display form of the object on the display unit in accordance with the entire content composed of various objects or the contents of the viewer's zoom operation on each object; An access authority granting system including a server having access authority information, wherein the server comprises storage means for storing the relation between the identification information of the viewer and the whole content or the object, and the acquired identification information of the viewer The key is used as a key to extract the relationship between the viewer and the entire content or object from the storage means, and depending on the relationship between the extracted viewer and the entire content or object, the upper or lower limit or both of the zoom level in the client To control An access authorization system characterized.

  The invention according to claim 2 is the access right granting system according to claim 1, wherein when the viewer performs a zoom operation exceeding a predetermined upper limit or lower limit of the zoom level in the client, it is more than that. A warning that the operation is not permitted is notified.

  The invention according to claim 3 is the access right granting system according to claim 1 or 2, wherein, in the client, when the viewer performs a zoom operation exceeding a predetermined upper limit or lower limit range of zoom, The recommended action is notified to the viewer.

  According to a fourth aspect of the present invention, in the access right granting system according to any one of the first to third aspects, in the client, the viewer exceeds a predetermined upper limit or lower limit range of the zoom level. When a zoom operation is performed, the content is zoomed out and displayed.

  The invention according to claim 5 is a content browsing in which the entire content or the display form of the object is continuously changed in accordance with the zoom operation content of the entire content composed of various objects or the viewer on each object and displayed on the display unit. In the method, a server comprising storage means for storing the relationship between the viewer identification information and the entire content or object stores the relationship between the viewer and the entire content or object using the acquired viewer identification information as a key. The access method is characterized in that the upper limit and / or the lower limit of the degree of zooming is controlled in accordance with the relationship between the extracted viewer and the entire content or object.

  According to a sixth aspect of the present invention, in the access method according to the fifth aspect, when the viewer performs a zoom operation beyond a predetermined upper limit or lower limit range of the zoom level, further operations are permitted. It is characterized by notifying the warning that it is not.

  The invention described in claim 7 is directed to the access method according to claim 5 or 6, when the viewer performs a zoom operation exceeding a predetermined upper limit or lower limit of the zoom level. The recommended action is notified.

  The invention according to claim 8 is the access method according to any one of claims 5 to 7, wherein the viewer performs a zoom operation exceeding a predetermined upper limit or lower limit of the zoom level. The content is zoomed out and displayed.

  According to the present invention, it is possible to appropriately grant the access authority according to the zoom operation / behavior for the entire content or object to which zooming is applied.

  The access authority grant system according to the embodiment of the present invention will be described below. Here, it is assumed that the content is browsed in the Web environment, but the environment is not limited to the Web environment, and may be an environment closed as one information processing apparatus and system. Further, the access target is not limited to the entire content but may be an object or the like.

  "Zooming cross media" that can change not only the level of detail using zooming but also transition of display media is applied to content in the Web environment.

  “Zooming cross media” is to position the zoom operation as a third operation for scrolling and anchor clicking. While scrolling moves the point of interest continuously within the same screen and anchor clicks fly to different screens, zooming / cross media continuously realizes changes in detail and display media transitions within the same screen. Display media transition refers to media objects that are related to each other, and according to the zoom operation, the display is continuously changed from one to the other, or the other is continuously displayed and the other is continuously enlarged. It is to make additional display while vice versa (or vice versa). For example, when subtitle text associated with a moving image is displayed, it is gradually changed from subtitle text display to subtitle text with a zooming operation.

Such zooming operation / behavior is modeled on the basis of three basic concepts of zoom target, zoom rate, and zoom propagation.
1. A zoom target “zoom target” is a unit that is a target of a zoom operation, and is composed of “media objects” of text, still images, moving images, and audio that constitute content. A viewer designates a desired zoom target and performs a zoom operation.
2. The zoom rate “zoom rate” is a value that is uniquely determined with respect to the zoom target, and is a continuous value between 0.0 and 1.0 that represents the degree of zoom. Zooming in the direction of increasing the zoom rate is called zooming in and zooming out in the direction of decreasing the zoom rate. For each media object, the zoom rate is associated with specific attributes (font size, image size, moving image or audio playback section, etc.).
3. Zoom propagation “Zoom propagation” means that when a zoom target is zoomed, other zoom targets are also zoomed together. In zoom propagation, the zoom ratio of the propagation destination is calculated from the zoom ratio of the propagation source zoom object based on a predetermined “zoom ratio relationship”, and the display state of the propagation destination zoom object is controlled. The zoom rate relationship is the ratio of change in the zoom rate between the propagation source and the propagation destination.

  When the zoom-in operation is performed on the object A of the content in the Web environment, the object B below the object A is newly displayed, and the new object C is displayed below the object B. When the zoom-in operation is performed on the content object A in the Web environment, the font sizes of the objects A and B are enlarged. In addition, when a zoom-in operation is performed on the object A of the content in the Web environment, the detail level of the still image that is the object C is increased (the image size is increased). Furthermore, when the object C is enlarged to a certain size, reproduction of a moving image (and sound) is started.

  The screen transition in content browsing in such a Web environment is described in the following display description (structure description and zooming description). The structure description and the zooming description are described in an XML (Extensible Markup Language) based zooming description language (ZDL).

1. Each of the designated text, still image, moving image, and audio of the media object is represented by <text />, <img />, <video />, and <audio /> tags. This tag specifies the specific text content or source file.
2. Zoom rate range
In zoomFactor attribute in the <div /> tag, specify the maximum and minimum values of the zoom factor and represent the range of the zoom factor as a continuous parameter.
3. Each of the display text, still image, moving image, and audio of the media object is represented by <dispText>, <dispImg>, <dispVideo>, and <dispAudio> tags. It is always included in the <div /> tag, and represents the display state of each media object at the zoom ratio in the range specified by the <div /> tag.
4). Describe the zoom target with the <zoomObject /> tag. The initial zoom rate, the zoom target of the zoom propagation destination, and the zoom rate relationship are also described with attributes in the tag. Be sure to include either <div /> or other <zoomObject />.

  Next, an example of zoom propagation when the zoom ratio relationship is a negative value will be described. When the zoom-in operation is performed on the object B of the content in the Web environment, the font size of the object B is enlarged, but the display size of the object C is reduced.

  The above is the outline of the screen transition in content browsing in the Web environment. FIG. 1 shows such a relationship expressed by a simple specific example. In the example of FIG. 1, A, B, and C are zoom targets, and the parentheses indicate the zoom ratio in the initial state. An arrow represents a zoom propagation relationship, and a value attached to the arrow indicates a zoom rate relationship. Since the zoom ratio relationship of AB is 0.5, when zooming in from A to B and zooming in A and changing the zoom ratio from 0.0 to 0.8, the zoom ratio of B changes from 0.0 to 0.4. B and C propagate in zoom with each other but the rate of change is negative (-1.0), so zooming in on one zooms out on the other. For example, in the initial state, only C (moving image) is displayed, and when B (text + sound) is zoomed in and enlarged, C (moving image) is gradually reduced. As in this example, the feature of this modeling is that transition of display media can be easily realized by introducing zoom propagation.

  The client terminal C in the present embodiment applies a search result list of a Web page by a search engine (for example, a robot search engine) as content in the Web environment, and the search result list of the Web page is displayed in the zooming description language (ZDL). Can be output in format.

  Here, the Web page that is the content is a collection of data that is displayed at one time on the Web browser, and is embedded in text data, HTML (or CSS (Cascading Style Sheet), XML, etc.) layout information, and a document. It consists of images, sounds, and moving images.

  FIG. 2 is a schematic configuration diagram of the access authority assignment system according to the present embodiment. As shown in FIG. 2, this system is a system in which a plurality of client computers (hereinafter referred to as client terminals) C, which are terminal devices, are connected to a server computer (hereinafter referred to as servers) 1 via a network N that is the Internet. Is assumed. As described above, the present invention is not limited only to the client / server system involving such network communication.

  Schematically, the server 1 performs a web page search based on a keyword for a general web page on the network N, which is the Internet, and outputs a list of web page search results in a zooming description language (ZDL) format. To do.

  The client terminal C is a general personal computer or the like, and can transmit and receive data to and from the server 1 by using a Web browser. This client terminal C accepts a Web page keyword search request from a viewer and outputs it to the server 1, and at the same time, a search result list of Web pages for the viewer output in the zooming description language (ZDL) format on the server 1. Is interpreted and displayed. That is, the client terminal C is an input / output device for the server 1 that is a content processing apparatus.

  FIG. 3 is a block diagram showing the configuration of the server 1. CPU (Central Processing Unit) 2, ROM (Read Only Memory) 3, RAM (Random Access Memory) 4, HDD (Hard Disk Drive) 5, network interface 6, input unit such as keyboard 7 and mouse 8 And the display 9, and the bus controller arbitrates the data communication between them.

  The HDD 5 has an access right table for each user shown in FIGS. 5, 6, 20 and the like, a table of user attributes as shown in FIG. 4, and the entire contents or objects shown in FIGS. And the like, and the table of payment fees for each user shown in FIGS. 10, 14, and 17 are stored. In the user access right table, for example, access permission information for the entire content or object associated with the user identification information and the user identification information is stored. The user attribute table stores, for example, user identification information and user attribute information associated with the user identification information. In the access fee table, for example, identification information for the entire content or object and information on the fee necessary for access associated with the identification information for the entire content or object are stored. In the payment fee table for each user, for example, user identification information and fee information paid by the user associated with the user identification information are stored.

  Here, the relationship between the identification information of the viewer and the entire content or object indicates whether or not direct access is possible if it is not a requirement that the permission or disapproval of access satisfies a predetermined condition. On the other hand, when it is required that the access permission / rejection satisfies a predetermined condition, it indicates what condition is accessible or inaccessible. Specifically, when it is not required that the access permission / rejection satisfies a predetermined condition, the access right for each user shown in FIGS. 5, 6, 20 and the like is referred to, while the access permission / rejection is predetermined. 4 is a requirement, the user attribute as shown in FIG. 4 is a predetermined attribute, or the access fee shown in FIGS. 10, 14, and 17 is a predetermined value or more. When certain conditions such as certain are set, user attribute information associated with the user identification information and fee information paid by the user associated with the user identification information satisfy the conditions and can be accessed Or is inaccessible because the condition is not met.

  When an access request for the entire content or object is issued from the client terminal C with the user identification information by the zooming operation, the server 1 uses the user identification information received together with the access request as a key as described above. Access permission is determined with reference to each table. Specifically, when it is not required that the access permission / rejection satisfies a predetermined condition, the access permission / rejection is determined with reference to the access right table for each user shown in FIG. 5, FIG. 6, FIG. To do. On the other hand, when it is a requirement that the access permission / rejection satisfy a predetermined condition, the user attribute table as shown in FIG. 4 or the entire contents or objects shown in FIG. 10, FIG. 14, and FIG. With reference to the access fee table and the payment fee table for each user shown in FIGS. 10, 14, and 17, the user attribute as shown in FIG. 4 is a predetermined attribute, etc. 14. For a predetermined condition such as the access fee shown in FIG. 17 being equal to or greater than a predetermined value, the user attribute information associated with the user identification information and the fee paid by the user associated with the user identification information It is determined whether or not the information is accessible by satisfying the condition, or is not accessible because the condition is not satisfied and the access permission is determined.

  On the client terminal C side, when a viewer starts a keyword search on a Web browser, a ZDL viewer that interprets and displays a zoom description language (ZDL) is activated at the same time. The search request input at the client terminal C is transmitted to the server 1. On the server 1 side, which is a content processing apparatus, when a search request input at the client terminal C is received, a database search based on keywords is executed. The display code generation unit ranks the Web page groups of the obtained search results based on a predetermined priority order, selects an object to be zoomed from each Web page, and zooms the Web page search result list Generated in the description language (ZDL) format. The generated search result list of the Web page in the zooming description language (ZDL) format is transmitted from the server 1 which is a content processing apparatus to the client terminal C and displayed on the ZDL viewer. The viewer appropriately performs a zooming operation on the displayed search result list of the Web page.

Hereinafter, an operation based on specific access authority will be described.
First, the case where the user's access right is given as shown in FIG. 6 will be described.

  The screen transition for user A is shown in FIG. First, since the document title is permitted to be accessed, the title list can be browsed. Since access to texts and thumbnail images up to 300 characters is permitted, a list of texts and thumbnail images up to 300 characters can be viewed from the title list by a zoom-in operation. Furthermore, since access is not permitted for the entire document, access to the document is notified when an attempt is made to browse the entire document through a zoom-in operation from a list of up to 300 characters of text and thumbnail images. The notification may be a warning text, a warning voice, or the like. It is also possible to return to a list of body text and thumbnail images up to 300 characters and a title list by zoom-out operation.

  The screen transition for user B is shown in FIG. First, since the document title is permitted to be accessed, the title list can be browsed. Since access to texts and thumbnail images up to 300 characters is permitted, a list of texts and thumbnail images up to 300 characters can be viewed from the title list by a zoom-in operation. Furthermore, since access is permitted for the entire document, a list of the entire document can be browsed by a zoom-in operation from a list of body text and thumbnail images of up to 300 characters. It is also possible to return to a list of body text and thumbnail images of up to 300 characters and a list of titles and a title list from the entire document list by zoom-out operation.

  FIG. 9 shows screen transitions for user C. First, since the document title is permitted to be accessed, the title list can be browsed. Since access to the text and thumbnail images up to 300 characters is not permitted, if the user tries to view the text and thumbnail images up to 300 characters from the title list by zoom-in operation, the user is notified that access is not permitted. The notification may be a warning text, a warning voice, or the like. It is also possible to return to the title list by a zoom-out operation.

  Next, as shown in FIG. 10, a case where the user's access right is given in association with a fee that requires payment will be described.

  Screen transitions for user A are shown in FIG. First, since the painting titles and thumbnail images are allowed to be accessed for free, a list of painting titles and thumbnail images can be viewed. Then, access is granted if the full-size painting image is paid for 300 yen, but the user A is assumed to pay 300 yen, so the list of full-size painting images can be zoomed in from the list of painting titles and thumbnail images. Can be viewed. Furthermore, although the commentary is paid for 350 yen, access is permitted, but user A is assumed to pay 300 yen, so it is insufficient for 50 yen as it is, and by zooming in from the list of full-size painting images If you try to browse with commentary, access will be denied, and you will be informed that an additional 50 yen payment is required to access. The notification may be a warning text, a warning voice, or the like. It is also possible to return to the list of full-size painting images and the list of painting titles and thumbnail images by zooming out.

  Screen transitions for user B are shown in FIG. First, since the painting titles and thumbnail images are allowed to be accessed for free, a list of painting titles and thumbnail images can be viewed. Then, access is permitted if the full-size painting image is paid for 300 yen, but the user B is assumed to pay 350 yen, so the list of full-size painting images can be zoomed in from the list of painting titles and thumbnail images. Can be viewed. Furthermore, although the comment is paid for 350 yen, access is permitted, but since User B is premised to pay 350 yen, the user can browse the comment text with a zoom-in operation from the list of full-size painting images. It is also possible to return to a list of full-size painting images, a list of painting titles and thumbnail images from a commentary by zoom-out operation.

  Screen transitions for user C are shown in FIG. First, since the painting titles and thumbnail images are allowed to be accessed for free, a list of painting titles and thumbnail images can be viewed. Then, access is permitted if the full-size painting image is paid for 300 yen, but the user A is assumed to pay 0 yen, so it is not enough for 350 yen as it is, and from the list of painting titles and thumbnail images. If you try to browse the list of full-size painting images by zooming in, access will be denied, and you will be notified that you will need to pay an additional 350 yen for access. The notification may be a warning text, a warning voice, or the like. It is also possible to return to the list of picture titles and thumbnail images by zooming out.

  Next, as shown in FIG. 14, a case where the user's access right is given in association with a fee that requires payment will be described.

  The screen transition for user A is shown in FIG. First, access is permitted if only video information is paid for 1,000 yen, but since user A is assumed to pay 1500 yen, the video information can be viewed. Access with subtitle data is permitted if the user pays 1500 yen, but since user A is premised to pay 1500 yen, the user can view the subtitle data with the zoom-out operation only from the video information. Furthermore, only subtitle data can be browsed by zoom-out operation from subtitle data attached. Note that it is possible to return only from caption data to only with caption data and video information by a zoom-in operation.

  The screen transition when user B is shown in FIG. First, access is permitted if only video information is paid for 1,000 yen, but user B is able to view the video information because payment is 1000 yen. And, with subtitle data attached, access is permitted if paying 1500 yen, but user B is premised to pay 1000 yen, so it is short of 500 yen as it is, and subtitles can be subtracted from the video information only by zoom-out operation. If you try to browse the data, access will be denied, and you will be informed that you will need to pay an additional 500 yen for access. The notification may be a warning text, a warning voice, or the like. It is also possible to return only to video information by zooming in.

  Next, a case will be described in which the user's access right is given in association with a fee that requires payment as shown in FIG.

  Screen transitions for user A are shown in FIG. First, access is permitted if only thumbnail video information is paid for 1,000 yen, but since user A is assumed to pay 2000 yen, only thumbnail video information can be viewed. Access to the thumbnail video information and subtitle data is permitted if an additional 500 yen is paid, but user A is assumed to pay 2000 yen. Subtitle data can be viewed. In addition, access is granted if full-size video information is paid for an additional 500 yen, but user A is supposed to pay 2000 yen, so full-size video information can be viewed by zoom-in operation from only thumbnail video information. It is. In addition, it is possible to move from full-size video information to only thumbnail video information, thumbnail video information and subtitle data by zoom-out operation, and from thumbnail video information and subtitle data to full-size video information from thumbnail video information and subtitle data. You can also move to information.

  FIG. 19 shows screen transitions for user B. First, access is permitted if only thumbnail video information is paid for 1,000 yen, but since user B is supposed to pay 1000 yen, only thumbnail video information can be viewed. And, if the thumbnail video information and subtitle data are additionally paid for 500 yen, the access is permitted, but the user B is assumed to pay 1000 yen, so there is a shortage of 500 yen as it is, and only the thumbnail video information. If the user tries to view the thumbnail video information and the subtitle data through the zoom-out operation, the access is not permitted, and it is informed that an additional 500 yen payment is required for the access. The notification may be a warning text, a warning voice, or the like. Note that it is also possible to return only to the thumbnail video information by zooming in. In addition, access is permitted if full-size video information is paid for an additional 500 yen, but user B is assumed to pay 1000 yen, so it is insufficient for 500 yen as it is, and zoom-in only from thumbnail video information. If the user tries to view full-size video information by the operation, the access is not permitted, and an additional 500 yen payment is required to access. The notification may be a warning text, a warning voice, or the like. It is also possible to return only to the thumbnail video information by a zoom-out operation.

  Next, the case where the user's access right is given as shown in FIG. 20 will be described with reference to FIG.

  In the case of the document 1 of the user A, first, since the document title is permitted to be accessed, the title list can be browsed. Since access to texts and thumbnail images up to 300 characters is permitted, a list of texts and thumbnail images up to 300 characters can be viewed from the title list by a zoom-in operation. Furthermore, since access is not permitted for the entire document, access to the document is notified when an attempt is made to browse the entire document through a zoom-in operation from a list of up to 300 characters of text and thumbnail images. The notification may be a warning text, a warning voice, or the like. It is also possible to return to a list of body text and thumbnail images up to 300 characters and a title list by zoom-out operation.

  In the case of the document 2 of the user A, first, since the document title is permitted to be accessed, the title list can be browsed. Since access to texts and thumbnail images up to 300 characters is permitted, a list of texts and thumbnail images up to 300 characters can be viewed from the title list by a zoom-in operation. Furthermore, since access is permitted for the entire document, a list of the entire document can be browsed by a zoom-in operation from a list of body text and thumbnail images of up to 300 characters. It is also possible to return to a list of body text and thumbnail images of up to 300 characters and a list of titles and a title list from the entire document list by zoom-out operation.

  In the case of the document 3 of the user A, first, since the document title is permitted to be accessed, the title list can be browsed. Since access to the text and thumbnail images up to 300 characters is not permitted, if the user tries to view the text and thumbnail images up to 300 characters from the title list by zoom-in operation, the user is notified that access is not permitted. The notification may be a warning text, a warning voice, or the like. It is also possible to return to the title list by a zoom-out operation.

  Furthermore, even when the user's access right is given based on the user's attribute as shown in FIG. 5, it can be applied in the same manner as in the above-described embodiments.

  Further, the recommended action may be notified or the corresponding content may be zoomed out and displayed at the timing when the notification of access disapproval is notified.

  The above-described embodiment is a preferred embodiment of the present invention, and various modifications can be made without departing from the gist of the present invention. For example, you may perform the process which implement | achieves the function of each apparatus by making each apparatus run the program for implement | achieving the function of the server 1 and the client terminal C. Further, the program is transmitted to another computer system by a transmission wave via a computer-readable recording medium such as a CD-ROM or a magneto-optical disk, or via a transmission medium such as the Internet or a telephone line. Also good.

It is explanatory drawing which expressed the outline | summary of the screen transition in the content browsing in the Web environment of embodiment of this invention with a simple specific example. It is a system configuration figure of an embodiment of the present invention. It is a block diagram which shows the structure of the server of embodiment of this invention. It is the table which stored the user information of embodiment of this invention. It is an example which shows the case where the access right of the user of embodiment of this invention is provided. It is an example which shows the case where the access right of the user of embodiment of this invention is provided. It is a figure which shows an example of the screen transition of embodiment of this invention. It is a figure which shows an example of the screen transition of embodiment of this invention. It is a figure which shows an example of the screen transition of embodiment of this invention. It is an example which shows the case where the access right of the user of embodiment of this invention is provided. It is a figure which shows an example of the screen transition of embodiment of this invention. It is a figure which shows an example of the screen transition of embodiment of this invention. It is a figure which shows an example of the screen transition of embodiment of this invention. It is an example which shows the case where the access right of the user of embodiment of this invention is provided. It is a figure which shows an example of the screen transition of embodiment of this invention. It is a figure which shows an example of the screen transition of embodiment of this invention. It is an example which shows the case where the access right of the user of embodiment of this invention is provided. It is a figure which shows an example of the screen transition of embodiment of this invention. It is a figure which shows an example of the screen transition of embodiment of this invention. It is an example which shows the case where the access right of the user of embodiment of this invention is provided. It is a figure which shows an example of the screen transition of embodiment of this invention.

Explanation of symbols

1 Server C Client terminal

Claims (8)

In accordance with the entire contents composed of various objects or the zoom operation contents of the viewer for each object, the display contents of the client and the access authority information are displayed by continuously changing the entire contents or the display form of the objects. An access authorization system including a server,
The server includes storage means for storing the relationship between the identification information of the viewer and the entire content or the object, and uses the acquired identification information of the viewer as a key between the viewer and the entire content or the object. The access is characterized in that the relationship is extracted from the storage means, and the upper or lower limit or both of the zoom level in the client is controlled in accordance with the relationship between the extracted viewer and the whole content or the object. Authorization system.   In the client, when a viewer performs a zoom operation exceeding a predetermined upper limit or lower limit range of the zoom level, a warning that a further operation is not permitted is notified. The access authorization system according to claim 1.   3. The recommended action is notified to the viewer when the viewer performs a zoom operation beyond a predetermined upper limit or lower limit of the zoom level in the client. The access authorization system described.   The content is zoomed out and displayed when the viewer performs a zoom operation exceeding a predetermined upper limit or lower limit range of the zoom level in the client. The access right granting system according to any one of the above. In the content browsing method of continuously changing the entire content or the display form of the object according to the zoom operation content of the entire content composed of various objects or the viewer for each object, and displaying on the display unit,
A server comprising storage means for storing the relationship between the identification information of the viewer and the whole content or the object, and using the acquired identification information of the viewer as a key, the relationship between the viewer and the entire content or the object An access method comprising: extracting from a storage means, and controlling an upper limit and / or a lower limit of a zoom level in accordance with a relationship between the extracted viewer and the whole content or the object.   6. A warning that a further operation is not permitted when a viewer performs a zoom operation exceeding a predetermined upper limit or lower limit range of zooming degree. Access method.   The access method according to claim 5 or 6, wherein when the viewer performs a zoom operation beyond a predetermined upper limit or lower limit of the zoom level, the viewer is notified of a recommended action. .   The content is zoomed out and displayed when the viewer performs a zoom operation exceeding a predetermined upper limit or lower limit range of the zoom level. The access method described in.

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