KR100728367B1 - Video Adaptation system using home-network server - Google Patents

Abstract

The present invention utilizes the homenet server as a relay server for video adaptation, and transfers the address of the video file existing on the web to the homenet server. The present invention relates to an adaptive conversion system.

Homenet Server, Adaptive Conversion, Video

Description

Video Adaptation system using home-network server}

1 is a block diagram of an embodiment of the present invention

2 is an operational flowchart of an embodiment of the present invention.

FIG. 3 is a detailed flowchart illustrating the video content adaptive conversion of the home net server in FIG.

4 is an application example according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: mobile communication device 110: mobile phone

120: PDA 200: phone DB

300: home net server 400: web server

The present invention relates to a video adaptive conversion system, and more particularly, by using a home net server as a relay server performing video adaptive conversion, when the address of a video file existing on the web is transmitted to the home net server, the client is optimized for the client. The present invention relates to a video adaptive conversion system that performs a service of changing and transmitting a video.

Here, the video content includes 2D / 3D graphics video content, animation video content, and the like, and the present invention deals with graphics video content in more detail.

In addition, the video adaptation here refers to an operation of converting the screen size, frame rate, video quality, video capacity size, etc. to suit the environment of the device for playing the video.

The video content provided in a mobile communication device such as a mobile phone and a PDA is a limited number of contents provided by a content provider.

According to the prior art, an adaptation is made to adapt one image content to a different use environment by using information on a usage environment (USAGE ENVIRONMENT), that is, user characteristics, user surroundings, and user terminal capabilities. The problem is that a single-source multi-use environment cannot be provided.

Single source means a single content generated from a multimedia source, and multi-use means that user terminals of various usage environments consume a single source for each usage environment.

The advantage of the single source multi-use environment is that by reprocessing the content to meet the various usage environments, it is possible to provide various types of content that are adapted and adapted to different usage environments. In providing to the user terminal, it is possible to efficiently use or reduce the network bandwidth.

Therefore, the content provider can reduce unnecessary costs incurred in the process of producing or transmitting a plurality of contents in order to match the video content to various usage environments, and from the content consumer's point of view, overcomes the spatial constraints of the environment in which they are located. At the same time, it is possible to consume the optimal video content that satisfies the user's preference as much as possible.

However, there have been a number of adaptive conversion techniques for transforming video to the client environment so that many videos can be viewed on mobile communication devices. Didn't exist.

An object of the present invention devised to solve the above problems, by using a home net server as a relay server for video adaptive conversion, and delivers the address of the video file existing on the web to the home net server optimized for the client The present invention provides a video adaptive conversion system that performs a service of changing and transmitting a video.

In order to achieve the above object, the present invention provides a video adaptive conversion system for converting and providing a video for playback on a mobile communication device, wherein the home net server is used as a relay server for performing video adaptive conversion. Adaptive transformation system.

The home net server may be connected to a web server capable of downloading video content and a phone DB capable of downloading characteristic information of a portable communication device, and may transmit and receive data with the portable communication device.

The characteristic information may be a resolution, a maximum frame, and a support codec of the mobile communication device.

In addition, the data provided from the portable communication device to the home net server is characterized in that it comprises the size of the remaining storage space of the mobile communication device.

Hereinafter, the present invention will be described in detail through examples and drawings.

It is a feature of the present invention to utilize a homenet server as an adaptive conversion server.

When the homenet server is used as an adaptive conversion server, the computational requirements are not high because the client target is limited to the home residents with the homenet server installed.

The homenet server is used as the adaptive conversion server, and the above-mentioned service is possible by applying the adaptive conversion technique.

1 is a block diagram schematically showing the configuration of the present invention.

Based on the home net server 300, the mobile communication device 100, the phone DB 200, and the web server 400 may be connected to each other.

Since the homenet server 300 includes the same configuration in a personal computer, after installing a program capable of performing a video adaptive conversion function on the personal computer, an interface capable of transmitting and receiving the mobile communication device with a USB port of the computer is provided. It connects to an input terminal such as and transmits and receives with a mobile communication device.

The mobile communication device 100 may include a mobile phone 110 and a PDA 120.

The mobile communication device 100 is required to be able to download and play video content from the outside.

The phone DB 200 may be supplied by a mobile communication service provider or a mobile communication device manufacturer, and may provide information about a resolution, a maximum frame, and a support codec of the mobile communication device.

In addition, the web server 400 may provide video content, and may receive user authentication through the home net server 300 or the mobile communication device 100.

Therefore, in order to apply the present invention, a user must first obtain a user qualification from a web server 400 that can provide video content through a membership registration procedure.

As shown in Figure 2, the operating method of the embodiment of the present invention is as follows.

First, the home net server 300 and the client's mobile communication device 100 is connected (S20).

At this time, the home net server 300 immediately grasps the communication network companies and equipment types to which the client subscribes.

For example, LG Telecom, LP-3000 or KTF, KP-3500.

The home net server 300 requests the phone DB 200 for information about the client, that is, information about the mobile communication device 100 that the client has (S30).

In response to the request, the phone DB 200 provides the homenet server 300 with client information such as whether the video can be played, the maximum playback frame, the codec used, and the resolution.

Next, a client connected to the home net server 300 requests a specific video content from the home net server (S50).

For example, the request can be made in the form of 'http://www.lge.co.kr/lg.avi'.

When the video content is requested, the amount of valid storage space of the client's mobile communication device 100 is also transmitted.

For example, 50MB, 3MB, and the like can be delivered.

The home net server 300 requests a video requested by the client from the web server 400 (S60).

And, the home net server 300 downloads the requested video from the web server 400. (S70)

Of course, there may be user authentication of the client or home net server 300 with respect to the web server 400.

In addition, the homenet server 300 determines and modifies a video form in a state most suitable for the client based on the client information of the phone DB 200 and the valid storage space of the mobile communication device 100 (S80).

Finally, the home server 300 provides the client with the modified video in a form suitable for the client (S90).

As shown in Fig. 3, the step S80 of the adaptive conversion comprises the following steps.

First, the client information received from the phone DB 200 is analyzed (S82), and the original video downloaded from the web server 400 is converted into the highest quality form using a codec that can be played in the client environment.

Considerations here include resolution, frame rate, and resolution.

Next, the training pools are compared based on the remaining storage space of the client's mobile communication device 100 (S84), and finally the type of the video to be converted is determined (S85).

In other words, considerations here include storage size and video quality.

In the above, a training pool refers to a correlation between a conversion control element for each codec and a file size, and is used to determine a video type according to storage space.

Then, the original video is finally converted into the determined form (S86).

4 is an application example according to an embodiment of the present invention.

Information of the original video downloaded from the web server 400 requested by the client is as follows.

Codec used: Divx

Resolution: 640 * 480

Frame rate: 30 fps

File size: 20MBytes

The client information provided by the phone DB 200 is as follows.

Codec used: 3ivx

Max Resolution: 176 * 144

Maximum frame rate: 15 fps

Therefore, the information of the highest quality video that can be played on the client is as follows.

Codec: 3ivx

Resolution: 176 * 144

Frame rate: 15 fps

Quality control value when encoding: QF99

File size: 2MBytes

However, the remaining storage space provided to the home net server 300 by the mobile communication device 100 is 0.5 MBytes.

Therefore, the quality of the video should be lowered to fit the storage space.

The quality of the video suitable for this is determined by the training pool, and the result is as follows.

Codec: 3ivx

Resolution: 176 * 144

Frame rate: 10 fps

Quality control value when encoding: QF80

File size: 0.5MBytes

The home net server 300 converts from the original video to the mobile communication device 100 so as to achieve the video quality as described above.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be evident to those who have the knowledge of

In addition, all conditional terms and embodiments listed herein are in principle clearly intended for the purpose of understanding the concept of the invention and are not to be limited to the embodiments and states so specifically listed. Should be.

In the related art, the video content provided in the mobile phone was only a limited number of contents provided by the content provider. However, by using the present method, a vast amount of video content existing on the web can be enjoyed on the mobile phone.

In addition, as described above, the present invention provides a service for adapting and converting image contents to suit different usage environments and various user preferences by using characteristic information of the user terminal and user playback taste characteristic information. It has the effect of providing an environment.

Claims (4)

In the video adaptive conversion system for converting and providing a video for playback on a mobile communication device, Homenet server is used as a relay server that performs video adaptive conversion, The home net server may transmit and receive data with the mobile communication device, And the data provided from the mobile communication device to the home net server includes the remaining storage space of the mobile communication device. The video adaptive conversion system of claim 1, wherein the home net server is connected to a web server capable of downloading video content and a phone DB capable of downloading characteristic information of a mobile communication device. The video adaptive conversion system according to claim 2, wherein the characteristic information is a resolution, a maximum frame, and a support codec of the mobile communication device. delete

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