KR102088832B1 - Electronic publication book service system and method based on network data rate and resource priority - Google Patents

Abstract

The present invention relates to an electronic publication book service system and a method based on network data rate and resource priority capable of delivering a large amount of content related to EPUB e-book in real time, and allowing adaptively selecting the resources of the delivered content according to the network data rate and resource priority. The electronic publication book service system and a method add an information file allowing a differentiated download service according to the network data rate and the priority of each resource included in large EPUB e-book contents, and allow a user device to perform a differentiated download service according to the network data rate and resource priority. Therefore, an excessive load is not concentrated on a service provider, and content adjusted according to the network data rate is provided to a user to increase service satisfaction.

Description

EPUB e-book service system and method based on network data rate and resource priority}

The present invention relates to an EPUB e-book service system and method according to network speed and resource importance, and in particular delivers large-capacity EPUB e-book related content in real time, but adapts resources of the delivered content according to network speed and resource importance. It relates to an EPUB e-book service system and method according to network speed and resource importance that can be selectively provided.

Currently, when a user purchases an e-book composed in the form of electronic publication (EPUB), the corresponding EPUB is downloaded to an electronic library on the user's terminal and can be viewed through an e-book viewer.

However, as the EPUB format is used as a standard format for digital textbooks and cartoons, the size of e-books increases to several gigabytes as music, videos, or numerous high-quality pictures are included inside the e-book. Is appearing. In order for such high-capacity e-book data to be sold on the Internet, it takes a long time to download data, and viewers who read the data are very systemically burdened to load high-capacity data at once. To solve this problem, service providers are currently selling hundreds of mega e-books in several e-books.

However, when a single e-book is divided into several services, it is difficult to manage the server, and there is a user's inconvenience in that a single book is divided into several in the user's study.

Therefore, recently, there is a case in which large-capacity content is transmitted in a streaming method, but even in streaming, it may take a long time to prepare for viewing depending on the number of connected users or the network environment of the user device, as well as a problem that the waiting continues. .

Therefore, the current user device viewing method is to receive and process the modified resource suitable for the network speed by first performing text-oriented playback when the network speed is slow or by changing the resolution or bit rate for images, videos, and music. It is also done. However, this method not only has to generate multiple versions of similar content for a single content, but in a service environment where concurrent users are rapidly increasing, the network continues to be downloaded until all users can download all remote e-book resources. Since there is a request through, there is a problem inevitably deteriorating the overall quality of service.

As a result, a user may complain that the e-book that he or she reads is not normally viewed according to the network environment, and in the case of a service provider, there may be a problem that the quality of service is lowered due to excessive network load.

Korean Patent Registration No. 10-1908410 [Method of providing e-book using page information]

The purpose of the embodiments of the present invention is to provide a download service differentiated according to the network speed and the importance of the resource for each resource included therein for a large-capacity EPUB e-book content when a large-capacity EPUB e-book content is to be streamed. By adding a file and adding the function to perform a differentiated download according to the network speed and the importance of resources based on this information file on the user device, the excessive load is not concentrated on the service provider, and suitable for the user depending on the network speed It is to provide an EPUB e-book service system and method according to network speed and resource importance to reduce service dissatisfaction because the adjusted content is provided.

Another object of the present invention is to provide a content selected according to priority through adaptive HTML content when a user wants to view an e-book, so if the network speed is low, if the importance of the resource is not high, the content with a large network load is initially visible Therefore, it is to provide an EPUB e-book service system and method according to network speed and resource importance so that even users with low network speed can increase their satisfaction with e-book reading.

In particular, another object of the present invention is to modify the HTML portion of the EPUB content according to the set priority, and repackage it, so that a large resource with a large load during repacking is not re-encoded, thereby reducing the burden of adding an adaptive HTML function. It is to provide an EPUB e-book service system and method according to network speed and resource importance.

In order to achieve the above object, the EPUB e-book service system according to the network speed and resource importance according to an embodiment of the present invention interlocks with the e-book server providing original content of the EPUB e-book, to the EPUB e-book. Depending on the network speed and importance of the resource for each included resource, insert the information to differentially view the resource into the original content including the link to the resource to generate the modified content and provide it to the e-book server An e-book service providing device, and receives the modified content from the e-book server, measures the network speed before viewing the modified content, and selects differential viewing information included in the modified content according to the measured network speed to the user Includes user devices provided.

As an example, the apparatus for providing an e-book service adds priority setting information according to a network speed to HTML content included in the EPUB e-book and includes a link to the resource, and a priority and a required transmission speed for the linked resource. According to this, the adaptive HTML content in which the selected exposure information is inserted so that the linked resource can be viewed differentially is generated as the modified content and provided to the e-book server, but the linked resource itself is not changed. It is characterized by.

As an example, when the linked resource is a video, the e-book service providing apparatus adds an information file including playback section selection information so as to play only a part selected according to a transmission speed, and the corresponding video link is added to the added information file. It is characterized by changing to a link to.

On the other hand, the information file includes summary playback information composed of a plurality of setting information for the location and length to be played in the video for each transmission speed, and the total data amount to be reproduced without changing the resolution or bit rate of the original video is transmitted to the transmission speed. Can be customized. Furthermore, when the user device plays a viewable video included in the modified content, the original video may be played according to a plurality of setting information for the video playback position and length for each transmission speed included in the information file corresponding to the measured network speed. have.

As an example, the user device receives the corrected content from the e-book server to view the e-book, measures the network speed, selects only the resources classified to be viewed according to the corresponding speed, and displays it to the user. It may not be requested to the network as being not included in.

In the EPUB e-book service method according to the network speed and resource importance according to another embodiment of the present invention, an e-book service providing device interlocks with an e-book server that provides original EPUB e-book content, and includes resources included in the EPUB e-book. Generating modified content by inserting information to differentially view the corresponding resource according to the network speed and the importance of the resource into the original content including a link to the resource, and wherein the e-book service providing device comprises When the modified content is provided to the e-book server, after updating the original content corresponding to the modified content received by the e-book server, repackaging the e-book without encoding the multimedia resource separately, and a user viewing the e-book The device receives the modified content from the e-book server, and And measuring the network speed before viewing the modified content and providing differential viewing information included in the modified content according to the measured network speed.

The EPUB e-book service system and method according to the network speed and resource importance according to an embodiment of the present invention provide a differentiated download service according to the network speed and the importance of the resource for each resource included therein for a large-capacity EPUB e-book content. Add the information file that can be used, and the user device is based on the information file to perform the differentiated download according to the network speed and the importance of the resource, so that the service provider does not concentrate excessive load. Since appropriately adjusted content is provided, it is possible to increase service satisfaction.

In particular, even when the network environment is bad or the number of concurrent users is difficult during a large-capacity EPUB e-book streaming service, the user's device may use a small amount based on the browsing information differentiated according to the network speed existing in the e-book. Since high-priority information is downloaded and viewed first, it is not felt that the service is delayed or disconnected, and if the network environment is good, high-capacity, high-quality contents can be viewed, thereby maintaining the quality of streaming services. There is.

1 is a block diagram of an EPUB e-book service system according to an embodiment of the present invention.
2 is an operation configuration diagram of an EPUB e-book service system according to an embodiment of the present invention.
3 is a configuration diagram for generating modified content of the EPUB e-book service system according to an embodiment of the present invention.
4 is an exemplary diagram for changing a link of an e-book service providing apparatus according to an embodiment of the present invention.
5 is an exemplary view showing original HTML content received by an e-book service providing apparatus according to an embodiment of the present invention.
6 is an exemplary view showing a modified content in which an e-book service providing apparatus according to an embodiment of the present invention inserts differentiated browsing information for each priority in the original HTML content.
7 is an exemplary view showing an information file for reproducing a summary that is newly generated for a video resource by an e-book service providing apparatus according to an embodiment of the present invention.
8 is a configuration diagram illustrating an operation method of a user device according to an embodiment of the present invention.
9 shows exemplary screens of e-book contents that are differentially displayed according to priority according to an embodiment of the present invention.
10 is a conceptual diagram for explaining a method of playing a video in a summary manner according to an information file at a low network speed according to an embodiment of the present invention.
11 is a flowchart illustrating an operation process of an e-book service providing apparatus according to an embodiment of the present invention.
12 is a flowchart illustrating an operation process of a user device according to an embodiment of the present invention.

The present invention as described above will be described in detail through the accompanying drawings and embodiments.

It should be noted that the technical terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. In addition, technical terms used in the present invention should be interpreted as meanings generally understood by a person having ordinary knowledge in the technical field to which the present invention belongs, unless defined otherwise. It should not be interpreted as a meaning, or an excessively reduced meaning. In addition, when the technical term used in the present invention is a wrong technical term that does not accurately represent the spirit of the present invention, it should be understood as being replaced by a technical term that can be correctly understood by those skilled in the art. In addition, the general terms used in the present invention should be interpreted as defined in the dictionary or in context before and after, and should not be interpreted as an excessively reduced meaning.

In addition, the singular expression used in the present invention includes a plural expression unless the context clearly indicates otherwise. In the present invention, terms such as “consisting of” or “comprising” should not be construed to include all of the various components, or various stages, described in the invention, including some of the components or some stages It may or may not be construed as further comprising additional components or steps.

Further, terms including ordinal numbers such as first and second used in the present invention may be used to describe elements, but the elements should not be limited by terms. The terms are used only to distinguish one component from another component. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may be referred to as a first component.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings, but the same or similar elements will be given the same reference numbers regardless of the reference numerals, and redundant descriptions thereof will be omitted.

In addition, in the description of the present invention, when it is determined that detailed descriptions of related known technologies may obscure the subject matter of the present invention, detailed descriptions thereof will be omitted. In addition, it should be noted that the accompanying drawings are only for easy understanding of the spirit of the present invention and should not be interpreted as limiting the spirit of the present invention by the accompanying drawings.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 11.

1 is a configuration diagram for an EPUB e-book service system according to an embodiment of the present invention, as shown, the user device 100 configured with the EPUB viewer 110, the user device 100 and information via a communication network It may include an e-book service providing device 200 for transmitting and receiving and a web server 300 for providing an e-book substantially.

At this time, the communication network can be applied to a variety of known communication methods, the user device 100 is a tablet PC (Tablet PC), a laptop (Laptop), a smart phone (Smart Phone) having a communication function, output function, various interface functions ), Portable terminal, mobile terminal, personal digital assistant (PDA), portable multimedia player (PMP) terminal, personal computer, wearable personal station (WPS) ) And the like. Also, the e-book service providing apparatus 200 may be configured as a server.

In an embodiment of the present invention, a configuration for changing a general e-book to a streaming method and a configuration for performing quality management by reflecting a network state for an e-book provided in a streaming method will be described.

However, the process of changing a general e-book to a streaming method is not a necessary process, and there are also e-books configured in consideration of a streaming method in the first place, and for an e-book considering such streaming, for an individual user according to an embodiment of the present invention Quality management performance configuration reflecting the network status can be applied.

First, the e-book service providing apparatus 200 maintains the original content for the electronic publication (EPUB) e-book provided by the web server (= e-book server) 300 in its original state without separating it into a plurality of files, Change the link information for the link location of each real content corresponding to the body content of the EPUB e-book included in the attribute information of the original content to the location of the server, and exclude the actual content from the original content to remove the service content. After generating, it is possible to provide the content for the service to the user device 100 in conjunction with the web server 300.

Accordingly, the EPUB viewer 110 of the user device 100 receiving the service content provides the link information corresponding to the object to be read when the service content is viewed, to the web server 300, and the e-book The service providing apparatus 200 receives the actual content corresponding to the link information from the web server 300, and changes the link location of the link information included in the actual content to the link location of the web server 300. The modified content may be generated and provided to the EPUB viewer 110 of the user device 100 through the web server 300.

Through this, the EPUB viewer 110 can download the modified content from the web server 300 and display it on the user device 100 for viewing, and add additional images, videos, and sound sources included in the modified content. When receiving a selection input for link information corresponding to content, access to the web server 300 according to the link information corresponding to the additional content to download the additional content from the web server 300 or the additional content If is a video or sound source, it may be received through a streaming method and output through the user device 100.

That is, the e-book service system according to an embodiment of the present invention maintains the e-book-related original content composed of a large-capacity EPUB file on the web server 300 instead of excluding the actual content related to the body content from the original content Provide the service content generated by individually linking the actual content to a location (address) for downloading from the web server 300 to the EPUB viewer 110, and using the service content, the EPUB viewer 110 ) Provides modified content that is identical to the actual content corresponding to the user's viewing target and the body content to be downloaded and viewed from the web server 300, and additional content linked to the actual content is also included in the modified content Downloading or streaming from the web server 300 using link information is also possible after viewing. It can provide.

Through this, the EPUB file provided to the user device 100 is minimized, and the original content corresponding to the e-book is not separately managed or provided, thereby providing the convenience of e-book management, and at the same time, the object to be browsed for each viewing part By providing content individually, it is possible to reduce the load load and communication load when reading an e-book.

On the other hand, in this case, since the entire e-book is changed from a method that the user device 100 downloads and reads, to a method of downloading and reading content in real time in a streaming method, a problem with streaming viewing of large resources included in the e-book Can occur.

That is, a service delay occurs when the number of user connections to the web server 300 providing style resources such as various multimedia and fonts included in the e-book content increases or the network environment of the user device 100 deteriorates. The network load can surge.

Therefore, in the embodiment of the present invention, the e-book service providing apparatus 200 changes the link information of the content to the link location of the web server 300, and when the resource targeted for the link information is a large resource, it is given priority. By inserting information that can be viewed according to ranking and network speed, it is possible to exclude large resources with low priority from e-book reading when network performance is poor. Through this, the user recognizes that the corresponding resource having low priority is not initially, and does not request the resource to the web server 300, thereby preventing the overall quality of service from deteriorating due to the increase in connection load.

2 is a detailed configuration diagram of the EPUB e-book service system according to the above, as shown, the EPUB viewer 110 may include an e-book management unit 111 and a viewing unit 112, the e-book service provided The device 200 may include an e-book service providing unit 210, an e-book generating unit 220 and a content processing unit 230.

The e-book service providing unit 210 includes e-book list information for a plurality of e-books held by the web server 300 in conjunction with a web server 300 that provides original content for each of the different e-books. The e-book service page can be provided to the user device 100.

In addition, the e-book management unit 111 included in the EPUB viewer 110 outputs an e-book service page provided from the e-book service providing unit 210 through the user device 100, and in the e-book service page Selection information for the selected e-book may be transmitted to the web server 300 according to a user input.

Accordingly, the web server 300 works with the e-book generation unit 220 when receiving the selection information, extracts original content corresponding to the selected e-book according to the selection information, and generates the e-book generation unit 220 ).

At this time, the original content may be composed of a file having an EPUB-based extension. Basically, EPUB uses XHTML or HTML5 to create internal text and document structures, and uses CSS to create a document frame and format. It is composed and uses XML for list, table form, and EPUB metadata, and consists of all contents contained in EPUB in a ZIP file.

Therefore, the original content includes property information including container.xml, style.css, toc.ncx, package.opf, etc., and actual content related to the body content and images, videos, sound sources, etc. included in the actual content. It may be composed of additional content.

In addition, the OPF (Open Package Format) file included in the attribute information is a file containing link information on the link location of all the actual contents included in the e-book from text to image, and the NCX (Navigation Center eXtended) table of contents file The location can also be determined from this file.

According to the above-described configuration, the e-book generating unit 220 is included in the attribute information of the original content so that the user device 100 can download and view the actual content included in the original content from the web server 300. The service information may be generated by changing link information for the link location of the actual content from a local location to the location of the web server 300 and excluding the actual content from the original contents.

For example, when the e-book 1 is selected according to the selection information, the e-book generation unit 220 may receive the original content corresponding to the e-book 1 from the web server 300, and at this time, the attribute information of the original content Link information for the actual content included in is set to be linked to a local location (address) which is a storage location (address) in the original content, as shown at the top of FIG. 4.

Accordingly, the e-book generation unit 220 stores the local content of the link information in the web server 300 so that the actual content is stored so that the actual content can be received from the web server 300 as shown in the lower part of FIG. 4. The link information may be changed to the location of the web server 300 to which the access address of the web server 300 is added to the local location to be linked to the location (address).

In addition, the e-book generation unit 220 may generate service content by excluding the actual content from the original content in which the link information is changed from a local location to a location of the web server 300.

Thereafter, the e-book generation unit 220 may transmit the service content generated by minimizing the size of the original content to the user device 100 through the web server 300.

Accordingly, the EPUB viewer 110 configured in the user device 100 may receive the service content through the user device 100 and download the actual content through the web server 300 to view the e-book. This will be described in detail.

First, the e-book management unit 111 receives and stores service content, and the reading unit 112 can view the service content according to a user input. At this time, the reading unit 112 may output the table of contents information included in the attribute information through the user device 100, and may select a reading target from the table of contents information according to a user input.

Accordingly, the browsing unit 112 may transmit the request information including the link information for downloading the actual content to be read to the web server 300 according to the link information for the actual content to be read when the service content is viewed. .

Meanwhile, when receiving the request information, the web server 300 may extract the actual content corresponding to the link location of the link information from the original content, based on the link information included in the request information, and extract the extracted actual content It can be provided to the processing unit 230.

At this time, the actual content may be composed of HTML or an image as described above, and when the actual content is composed of HTML, various additional contents may be linked and configured.

Therefore, since the actual content includes link information for the additional content, and the link information for the additional content is also set to a local location, the actual content is provided to the viewing unit 112 of the user device 100 as it is. You cannot receive additional content linked to.

To this end, the content processing unit 230 determines whether link information is included in the actual content received from the web server 300, and if the link information is not included, the actual content is transmitted through the web server 300 to the user device 100 ), And when link information is included, the local location according to the link information included in the actual content is the location (address) where additional content is stored in the web server 300 as in the process of generating content for the above-described service. The modified content changed to the location (address) of the server 300 may be generated.

Thereafter, the content processing unit 230 returns (provides) the modified content to the web server 300 in response to the actual content, and the web server 300 transmits the modified content to the user device 100 in response to the request information You can.

Through this, the viewing unit 112 may display the modified content to be viewed through the user device 100.

At this time, the browsing unit 112 may transmit the request information including the link information corresponding to the additional content to the web server 300 as described above when the link information for the additional content is selected according to the user input from the edited content displayed and displayed. In addition, the web server 300 may extract the additional content from the original content according to the link information included in the request information and transmit it to the user device 100.

Even in the case of an e-book that does not support streaming in this way, streaming may be possible through the e-book service providing apparatus 200 according to an embodiment of the present invention, and the modified content may be generated at each user's request. Thereafter, the generated web server 300 may receive the modified content and repackage the corresponding e-book.

On the other hand, in this case, since the entire user's device 100 is not downloaded and viewed, the transmission delay may occur depending on the network state when the user device 100 for streaming is accessed. Network overload may occur. That is, since various multimedia resources included in the e-book content must be provided through the real-time web server 300, the number of users may increase or the resource download may take a long time depending on the network environment of the user device 100. Service complaints may occur, and the load on the network of the web server 300 may be sustained because a plurality of user devices continuously request resources through the network in order to download all the resources.

Of course, in recent years, in consideration of the network situation with the user device, the resolution of the video may be lowered or the bit rate may be lowered to provide a low-capacity video (or sound source) differentially. Since a plurality of media files need to be created and retained in advance, the resource storage space of the web server 300 increases exponentially, and in order to repackage it as an e-book, a computational load increases due to DRM setting, etc., and it takes a lot of time. On the other hand, even in the case of a user, since relatively low quality information is received, dissatisfaction with the service may occur, and even in the case of such low quality media resources, there is a problem that a transmission delay may occur when the user increases.

Accordingly, in the embodiment of the present invention, the e-book service providing apparatus 200 generates the modified content in which the link location of the link information included in the actual content is changed to the link location of the web server 300, and the corresponding link information. If the resource to be targeted is a multimedia resource, information that can be viewed differentially according to priority and network speed may be inserted.

FIG. 3 conceptually shows a configuration in which the e-book generation unit 220 generates content for a service and a configuration in which the content processing unit 230 modifies HTML content into adaptive HTML content and provides it to the web server 300, Through this process, the web server 300 can reconfigure the e-book with attribute information having link information, adaptive HTML, and existing large-capacity resources, and repackage the download-type e-book into a streaming e-book. It is possible to maintain the quality in consideration of the network load while making it. Of course, if necessary, only one of these functions can be performed. If the original content is already configured as a link method for streaming, only the configuration that maintains the quality of service through adaptive HTML can be applied.

The method for providing adaptive HTML modified content of the content processing unit 230 will be described with reference to FIGS. 5 to 10 which are more specific embodiments.

First, the content processing unit 230 of the e-book service providing apparatus 200 receives HTML content including links to multimedia resources such as images, sound sources, videos, and style resources such as fonts from the web server 300, As illustrated in FIG. 5, this may include fonts and links to various images and videos.

The content processing unit 230 according to an embodiment of the present invention modifies this to the adaptive HTML shown in FIG. 6, and inserts the priority information A1 preset in the original HTML content as shown. The priority information is to classify the contents that should be given preferentially according to the speed. In the illustrated example, the priority to be displayed is pr0 for any network speed, and the priority to be displayed is pr1 when the speed is 1 Mbps or more. And, if the speed is 3Mbps or more, what is to be displayed is defined as pr2, which can be set to a wider range, which may be a preset criterion in consideration of the network capacity of the web server 300 or the user environment.

In addition, as illustrated, the content processing unit 230 defines a priority for a font file corresponding to a large resource as the lowest pr2 and changes it to a tag that inserts selective exposure information to disable it when the speed is less than 3 Mbps ( a1), and insert additional exposure information (a2) to show the image only when pr1 or higher (speed) is applied to the additional image portion with a medium priority (a2), so that additional images are also omitted when the speed is less than 1Mbps. In the case of a video, selective exposure information is inserted (a4) so that it is provided only when pr2 having the lowest priority.

On the other hand, in the case of the main video that should always be provided, the importance is high, but if all of them are provided all the time, a speed drop may occur. Therefore, an information file including play section selection information is added to play only a part selected according to the transmission speed. The corresponding video link is changed to a link to the added information file (a3).

In the illustrated example, a new information file (sample-1.mpd) is created and the corresponding video file is replaced.

As shown in FIG. 7, a playback method in consideration of this is defined for a case of having a network speed lower than pr1 of 1 Mbps or less, as shown in FIG. 7, and the 'summary' format is provided so that the original video resource can respond to a slow speed without changing In this way, the setting information for playing the video is defined according to the speed.

That is, as shown, it includes summary playback information composed of a plurality of setting information for the location and length to be played in the video for each transmission speed, and transmits the total amount of data to be played without changing the resolution or bit rate of the original video. Set according to. In the illustrated example, if the speed is 57 kbps or less, the video is limited to 14 seconds of summary format by playing at 1.234 seconds at the starting point, 2.421 seconds at the 10 second position, and 10.321 seconds at the 25 second position. The setting information is configured to play (M1). In other words, considering the resolution and bit rate of the relevant video, if it is less than 57 kbps, it is set to be limited to about 14 seconds, and then the information summarizing the core part of the video can be inserted according to the limited amount. Contents can be provided in the original resolution according to the network speed without touching. The content reproduction unit 230 may receive the content playback unit 230 from the e-book provider (publisher, author, administrator, etc.) or the web server 200 (settings made by the web server administrator). Receive information).

If the speed is 57 kbps to 112 kbps, a video of 24 seconds as the setting information can be reproduced as summary information (M2). If it is faster than that, the entire video is played.

In this way, the content processing unit 230 adds priority setting information according to the network speed to the original HTML and allows the linked multimedia resources to be viewed differentially according to the priority and the required transmission speed for the linked multimedia resources. The adaptive HTML content in which the selective exposure information is inserted is generated as modified content and provided to the web server 300.

Through this, the user browses the e-book contents in a streaming manner through the EPUB viewer 110 of the user device, but only the contents having high priority when the network speed is slowed down. At this time, the user is unable to confirm itself that there is a content having a low priority and a large resource, and these resources do not request the web server 300 by the user device 100, so the number of users increases or the network It is possible to adaptively maintain the quality of service even when the load increases and the speed decreases.

The illustrated content processing unit 230 may generate the modified content in the adaptive HTML format as described above each time the e-book is read, and provide it to the web server 300 each time, and the web server 300 receiving the adaptive HTML may Based on this, the e-book can be repackaged.

The web server 300 may repackage the corresponding e-book by receiving new modified content including selective exposure information that allows the user to browse multimedia resources differently according to priority and network speed. However, a large multimedia resource that affects the packaging speed does not need to be re-encoded, thereby reducing the burden on repackaging.

After all, changing link information to support streaming of e-books that do not support streaming, inserting selective exposure information according to priority and speed to maintain quality according to the network access load by streaming, or both, are used for large-scale resources. Since the modified HTML is generated by transforming the document type HTML having link information, there is no need to re-encode the multimedia resource, so the repackaging load of the web server 300 is low, so that the burden of accommodating these services is rarely generated. Does not.

8 is a configuration diagram illustrating an operation method of a user device according to an embodiment of the present invention.

As illustrated, when the EPUB viewer 110 selects an e-book having adaptive HTML content from the web server 300 through the e-book management unit 111 and reads it through the reading unit 112, the reading unit 112 may Before processing the adaptive HTML content, the network speed is measured through the speed measurement unit, and only resources classified to be viewed according to the speed are selected and the adaptive HTML content is provided to the user through the screening request display unit. It is not included in the content and is not requested to the network. When the network request speed is below the standard, the screening request display unit may partially request a video based on the summary setting information of the video and provide the video as a summarized video to the user.

With reference to FIGS. 6 and 7 described above, display contents for each network speed will be described with reference to FIGS. 9 and 10.

First, if the network speed measured by the reading unit 112 is faster than 3 Mbps which is the standard defined in pr2 of the lowest priority, all resources are displayed to the user. As shown in FIG. 9A, font resources are downloaded, and the main image and additional images are displayed. , Both the main video and additional videos are displayed, and when the user selects additional videos, the entire video is played.

If the network speed measured by the browsing unit 112 is between 1 Mbps and 3 Mbps, only the ones corresponding to the priority pr1 are selectively displayed, and thus, as shown in FIG. 9B, the additional video is not displayed as if there is no corresponding content in the first place. Also, the font provided by the system is used without downloading font resources. The main video displayed at this time is played in its entirety.

If the network speed measured by the browsing unit 112 is less than 1 Mbps, additional images and additional videos, which are resources with low priority, are not displayed, but only the main image and the main video with high priority, as shown in FIG. 9C.

Meanwhile, in the case of the main video, the content is defined in a separate information file, and when the playback of the main video is selected, it may be played differently according to the current transmission speed as shown in FIGS. 10A to 10C.

If the speed measured by the speed measurement unit of the viewing unit 112 is greater than or equal to 112 kbps, which is the maximum speed defined in FIG. 7, the entire video is played as shown in FIG. 10A.

If the speed measured by the speed measurement unit of the viewing unit 112 is 57 kbps to 112 kbps, only a part of the video (in the embodiment, 24 seconds in length) of the corresponding video is partially reproduced, as shown in FIG. Is provided.

If the speed measured by the speed measurement unit of the reading unit 112 is less than 57 kbps, only a portion (14 seconds in the embodiment) of the video is partially reproduced as shown in FIG. 10C.

As described above, the user browses contents that are provided in a sequential order, starting with high-priority resources that must be provided in accordance with the network speed from the beginning. It is possible to maintain the quality of service experienced.

11 is a flowchart showing an operation process of an e-book service providing apparatus according to an embodiment of the present invention, and as shown, the e-book service providing apparatus has priority for a network speed suitable for transmitting original EPUB content from the e-book server. Priority setting and necessary transmission speed for the linked resources are added, and priority setting information according to the network speed is added for HTML content including a link to a large resource among the content by receiving the rating setting information and receiving the original EPUB content. In accordance with this, the selected exposure information to enable differential reading of the linked resource is inserted.

If video information is present among the linked resources and the priority of the video is high, an information file including play section selection information is added to play only a part selected according to the transmission speed, and the video link is added to the added information file. Change it to a link to apply.

The generated adaptive HTML and information files are provided to the web server, and if necessary, the corresponding web server repackages the e-book including the adaptive HTML and information files. In this case, it is not necessary to re-encode large resources.

12 is a flowchart showing an operation process of a user device according to an embodiment of the present invention. As illustrated, when a user device wants to receive and view modified content through a web server, the network speed is first measured by measuring the network speed. Resources are downloaded in accordance with the selection information by priority defined in the modified content based on. In this way, resources downloaded according to priority and speed are provided to the user as content.

Through this, even if the streaming user rapidly increases, users with a slow network speed can select and view only the resources with high priority, so that the network load is not rapidly increased and the user's service satisfaction can also be maintained.

Meanwhile, the device referred to in the present invention may be implemented with a hardware component, a software component, and / or a combination of a hardware component and a software component. The systems, devices and components described in embodiments include, for example, processors, controllers, arithmetic logic units (ALUs), digital signal processors (micro signal processors), microcomputers, field programmable arrays (FPAs), PLUs ( It may be implemented using one or more general purpose computers or special purpose computers, such as a programmable logic unit, microprocessor, or any other device capable of executing and responding to instructions. In addition, such a server or device may run an operating system (OS) and one or more software applications running on the operating system. In addition, the device may access, store, manipulate, process and generate data in response to the execution of the software. For convenience of understanding, a server or a device may be described as one being used, but a person having ordinary skill in the art, the processing device may include a plurality of processing elements and / or a plurality of types of processing. It can be seen that it may contain elements. For example, a server or device may include a plurality of processors or a processor and a controller. In addition, other processing configurations, such as parallel processors, are possible. In addition, the device can control various sensors directly through the interface or through a separate hardware / software board or module for controlling a driver or sensor, and can cover all various logical, electrical, and optical modifications for this. have.

Furthermore, in the embodiments of the present invention, devices for collecting data and components thereof may be devices including hardware or software for collecting information of physical and electrical sensors, and receiving and processing electrical signals. Interface, drive driver, communication device, power supply, microcontroller for control, storage unit, operating system or firmware, and may include sensors as needed.

The above-described contents will be able to be modified and modified without departing from the essential characteristics of the present invention to those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

100: user device 110: EPUB viewer
111: e-book management unit 112: reading unit
200: e-book service providing device 210: e-book service providing unit
220: e-book generation unit 230: content processing unit
300: web server

Claims (10)

In conjunction with the e-book server that provides the original EPUB e-book content, links to the resource are provided to enable information to be differentially viewed according to the network speed and the importance of the resource for each resource included in the EPUB e-book. An e-book service providing device that inserts the included original content to generate modified content and provides it to the e-book server;
A network comprising a user device that receives the modified content from the e-book server, measures the network speed before viewing the modified content, and selectively provides differential viewing information included in the modified content to the user according to the measured network speed. EPUB e-book service system according to speed and resource importance.
The method according to claim 1, The apparatus for providing an e-book service adds priority setting information according to a network speed to HTML content included in the EPUB e-book and includes a link to the resource. According to the required transmission speed, adaptive HTML content in which selective exposure information is inserted to enable differential viewing of the linked resource is generated as the modified content, and provided to the e-book server, but the linked resource itself EPUB e-book service system according to network speed and resource importance, characterized in that it does not change.
The method according to claim 1, wherein the e-book service providing apparatus adds an information file including play section selection information so as to play only a part selected according to a transmission speed when the linked resource is a video, and the video link is added to the EPUB e-book service system according to network speed and resource importance, characterized by changing to a link to an information file.
The method according to claim 3, The information file includes a summary playback information composed of a plurality of setting information for the location and length to be played in the video for each transmission speed, the total amount of data to be played without changing the resolution or bit rate of the original video EPUB e-book service system according to the network speed and resource importance, characterized in that to set in accordance with the transmission speed.
The method according to claim 4, When the user device plays a viewable video included in the modified content, according to a plurality of setting information for the video playback position and length for each transmission speed included in the information file corresponding to the measured network speed EPUB e-book service system according to network speed and resource importance, characterized by playing the original video.
The method according to claim 1, The user device receives the modified content from the e-book server to view the e-book, and then measures the network speed, selects only resources classified to be viewed according to the corresponding speed, displays it to the user, and displays it to the user. EPUB e-book service system according to network speed and resource importance, characterized in that the resource is not included in the content and is not requested to the network.
The e-book service providing device works in conjunction with an e-book server that provides original EPUB e-book content, and provides information that allows you to differentially view the resource according to the network speed and the importance of the resource for each resource included in the EPUB e-book. Generating modified content by inserting the original content including a link to the corresponding resource;
If the e-book service providing device provides the modified content to the e-book server, updating the original content corresponding to the modified content received by the e-book server and repackaging the e-book without encoding the multimedia resource separately. Wow;
A user device reading an e-book receives the modified content from the e-book server, and measures the network speed before viewing the modified content to provide differential viewing information included in the modified content according to the measured network speed. EPUB e-book service method according to the network speed and resource importance, including.
The method according to claim 7, The step of generating the modified content is included in the EPUB e-book, adds priority setting information according to the network speed to the HTML content including a link to the resource, the priority for the linked resource Network speed characterized by generating adaptive HTML content in which the selected exposure information to differentially view the linked resource according to the required transmission speed and the modified resource is generated as the modified content, and providing it to the e-book server. EPUB e-book service method according to the importance of resources and resources.
The method according to claim 7, If the e-book service providing device is the linked resource is a video, adds an information file including playback section selection information so as to play only a partial selection selected according to the transmission speed, and the video link to the EPUB e-book service method according to the network speed and resource importance, comprising the step of changing to a link to the added information file.
The method according to claim 9, The information file includes a summary playback information consisting of a plurality of setting information for the location and length to be played in the video for each transmission speed, the total amount of data to be played without changing the resolution or bit rate of the original video EPUB e-book service method according to the network speed and the importance of resources, characterized in that set according to the transmission speed.

Images