WO2018016812A1

WO2018016812A1 - Portable video content playing device and operating method therefor

Info

Publication number: WO2018016812A1
Application number: PCT/KR2017/007633
Authority: WO
Inventors: 오제호; 신현흥
Original assignee: 오제호; 신현흥
Priority date: 2016-07-22
Filing date: 2017-07-17
Publication date: 2018-01-25
Also published as: KR20180010892A; KR101838271B1

Abstract

A portable video content playing device and an operating method therefor are disclosed. The portable video content playing device and the operating method therefor, according to the present invention, receive corresponding video content directly through a video-on-demand service through a mobile communication network or a wireless LAN network and play the same, when the intensity of a wireless signal is weakened during playing of the video content by the reception of the video content through a digital multimedia broadcasting (DMB) service, thereby enabling a user to be supported in seamless viewing of the corresponding video content.

Description

Portable video content playback device and its operation method

The present invention relates to a portable video content reproducing apparatus capable of receiving and reproducing image content data through a network and a method of operating the same.

Recently, with the emergence of various portable devices capable of network communication such as smart phones and tablet PCs, various services that can be applied to such portable devices have been released.

In particular, since these portable devices are equipped with a playback function capable of playing video contents, a service for providing a variety of video contents to these portable devices has emerged.

Typical services that provide video contents to portable devices include DMB broadcasting service that broadcasts broadcast video contents to portable devices in real time through DMB (Digital Multimedia Broadcasting) network and the Internet such as mobile communication network or wireless LAN network. There is a Video On Demand (VOD) service that provides video content to portable devices through the PC.

DMB broadcasting service is a service that is frequently used by users who have a portable device in that it is free. However, due to the characteristics of the DMB network, DMB broadcasting service has many shadowed areas where video contents are not easily received due to the weak strength of the wireless signal. On the other hand, the VOD service is a service provided free or for a fee, and the shaded area is hardly present in comparison with the DMB broadcasting service in that it receives video contents through a well-established mobile communication network or wireless LAN network.

Therefore, when the mobile device capable of playing the video content receives the video content through the DMB broadcasting service and plays the video content, when the strength of the wireless signal is weakened, the corresponding video content is directly transmitted through the mobile communication network or the wireless LAN network. It is necessary to study a technique for allowing a user to watch the video contents without interruption by receiving and playing through the VOD service.

In addition, when receiving a video content on the portable device through the VOD service, if the user views the video content in a landscape view mode with the portable device tilted horizontally, the video content should be displayed on the entire display of the portable device. High-capacity, high-resolution video content needs to be delivered to the portable device, but if the user views the video content in portrait view mode with the portable device held vertically, the video content appears small on a portion of the display of the portable device. Since low resolution video content is not a problem in readability, a large amount of high resolution video content does not need to be delivered to a portable device.

Therefore, in order to reduce the data usage fee due to the use of mobile communication network in VOD service and to prevent data dropping that may occur due to the transmission of a large amount of video content, the user sets the portable device to landscape view mode or portrait view mode. In the case of setting the vertical view mode, a method for improving efficiency in providing VOD service by delivering low-capacity video content having a low resolution to a portable device is required.

The present invention, when receiving the video content through the DMB (Digital Multimedia Broadcasting) broadcasting service to play the video content, when the strength of the wireless signal is weakened, the video content directly through the mobile communication network or WLAN network VOD (Video) The present invention provides a portable video content reproducing apparatus and a method of operating the same, which can be received and reproduced through an On Demand service, so that a user can view the corresponding video content without interruption.

In addition, the present invention distinguishes whether the user sets the portable video content reproducing apparatus to the horizontal viewing mode or the vertical viewing mode, and when the portable viewing contents are set to the vertical viewing mode, the low-capacity video contents having a low resolution are carried. By delivering to the playback device, it is intended to provide a technique that can increase the efficiency in providing VOD services.

According to an embodiment of the present invention, a portable video content reproducing apparatus includes a DMB reproducing unit configured to receive data about video content broadcast through a DMB communication network from a digital multimedia broadcasting (DMB) broadcasting transmission device and to play the video content. Wireless signal measuring unit for measuring the strength of the wireless signal received through the DMB communication network, when the intensity of the wireless signal is measured below the predetermined reference value, the video content is measured at the time measured below the predetermined reference value A playback point information generator for generating information on the last played point last played, a request for transmission of identification information on the video content and information on the last play point, and data after the last play point of the video content To a Video On Demand (VOD) data transfer device Receives the data after the last playback point of the video content from the VOD data transmission apparatus through a video data requesting unit and a mobile communication network or a wireless LAN in a streaming manner to play the video content after the last playback point. And an image replacement playback unit.

In addition, the method of operating a portable video content reproducing apparatus according to an embodiment of the present invention comprises the steps of: receiving data about video content broadcasted through a DMB communication network from a DMB broadcasting transmission apparatus and reproducing the video content, the DMB communication network Measuring the intensity of a wireless signal received through the; when the intensity of the wireless signal is measured below a predetermined reference value, at the point of time when the image content is measured below the predetermined reference value, the last playback point at which the image content was Generating information about the video content, transmitting identification information on the video content, information on the last playback point, and a request for transmission of data after the last playback point of the video content to the VOD data transmission device; The VOD data transmission field through a communication network or a wireless LAN network From a step of reproducing the image contents following the last playback point to receive data following the last reproducing point of the video content in a streaming manner.

In accordance with an aspect of the present invention, a portable video content reproducing apparatus and a method of operating the same are used in a mobile communication network or a wireless LAN when the strength of a wireless signal decreases while receiving video content through a digital multimedia broadcasting (DMB) broadcasting service. By receiving and playing the video content directly through a video on demand (VOD) service through a network, the user can support the video content without interruption.

In addition, the present invention distinguishes whether the user sets the portable video content reproducing apparatus to the horizontal viewing mode or the vertical viewing mode, and when the portable viewing contents are set to the vertical viewing mode, the low-capacity video contents having a low resolution are carried. By transmitting to the device, it is possible to provide a technique for improving the efficiency in providing VOD services.

1 is a diagram showing the structure of a portable video content reproducing apparatus according to an embodiment of the present invention.

2 is a diagram for describing a horizontal view mode and a vertical view mode of a portable video content reproducing apparatus according to an embodiment of the present invention.

3 is a flowchart illustrating a method of operating a portable video content reproducing apparatus according to an embodiment of the present invention.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, a portable video content reproducing apparatus 110 according to the present invention includes a digital multimedia broadcasting (DMB) reproducing unit 111, a wireless signal measuring unit 112, a playback point information generating unit 113, and image data request. The unit 114 and the image replacement playback unit 115 is included.

Here, the portable video content reproducing apparatus 110 according to an embodiment of the present invention receives various types of data for reproducing the video content through network communication such as a smart phone, a tablet PC, a PDA, a notebook computer, and the like. It can be implemented based on the microprocessor-based device of.

The DMB playback unit 111 receives data on video content broadcast through a DMB communication network from a DMB broadcast transmission device (not shown) and reproduces the video content.

The wireless signal measuring unit 112 measures the strength of a wireless signal received through the DMB communication network.

At this time, according to an embodiment of the present invention, the wireless signal measuring unit 112 checks the RSSI (Received Signal Strength Indication) of the wireless signal received by the receiver of the portable video content playback device 110 through the DMB communication network The strength of the wireless signal may be measured.

When the strength of the radio signal is measured below a predetermined reference value, the playback point information generating unit 113 measures the last playback point of the last playback point of the image content at the point of time when the wireless signal is measured below the predetermined reference value. Generate information.

At this time, according to an embodiment of the present invention, the playback point information generation unit 113 generates information on the playback time corresponding to the last playback point at which the video content was last played back as information on the last playback point. can do.

For example, if the video content is a content of 60 minutes in total, and the intensity of the wireless signal is measured below the predetermined reference value when the video content is reproduced for 40 minutes through the DMB reproducing unit 111, the playback point The information generating unit 113 may generate information on the reproduction time of "40 minutes" corresponding to the last reproduction point at which the video content was played last as information on the last reproduction point.

The video data request unit 114 transmits a video on demand (VOD) data transmission device for requesting transmission of identification information on the video content, information on the last playback point, and data after the last playback point of the video content. 130).

Here, the identification information of the video content means unique information for distinguishing the video content, such as a title of the video content or an ID previously assigned to the video content.

At this time, the VOD data transmission device 130 requests for transmission of identification information on the video content, information on the last playback point, and data after the last playback point of the video content from the portable video content playback device 110. Is received, after confirming the data corresponding to the identification information of the video content from a data store in which data for a plurality of video contents is stored, the information on the play time corresponding to the last playback point of the video content. Based on the point of time corresponding to the playback time of the data for the video content based on the transmission to the portable video content playback device 110 the data after the last playback point of the video content in a streaming (streaming) method do.

For example, the VOD data transmission device 130 receives title information "ABC" as identification information for the video content from the portable video content playback device 110, and at the last playback point of "40 minutes" of the video content. When the information on the playback time is received, and the data transmission request for the video content is received, the VOD data transmission device 130 receives an image having a title of "ABC" from the data storage where a plurality of video contents are stored. You can check the data about the content.

Then, the VOD data transmission device 130 stores the data of the video content titled "ABC" stored in the data storage based on the information on the playback time for the last playback point of "40 minutes" of the video content. By using a point corresponding to the playback time of "40 minutes" in the video content as a time point to the portable video content playback device 110 to transmit the data after "40 minutes" of the video content in a streaming manner Can be.

The video replacement playback unit 115 receives the data after the last playback point of the video content from the VOD data transmission apparatus 130 through a mobile communication network or a wireless LAN in a streaming manner, and thus the video content after the last playback point. Play it.

As a result, the portable video content reproducing apparatus (! 10) according to the present invention receives a video content through a DMB broadcasting service, and when the strength of the wireless signal is weakened while playing the video content, through a mobile communication network or a wireless LAN network. By directly receiving and playing the video content through the VOD service, the user can support the video content without interruption.

In this case, according to an embodiment of the present invention, the portable video content reproducing apparatus 110 may further include a mode determining unit 116, a first requesting unit 117, and a second requesting unit 118.

The mode determining unit 116 detects the tilt of the portable video content reproducing apparatus 110 through a tilt detection sensor, and determines whether the portable video content reproducing apparatus 110 intends to display the video content in the horizontal viewing mode. It is determined whether to display video content.

In relation to the horizontal view mode and the vertical view mode, as shown in FIG. 2, the image content may be changed depending on whether the user tilts the portable image content reproducing apparatus 110 in the horizontal direction or uses the image in the vertical direction. This means that the method displayed on the portable video content reproducing apparatus 110 is changed.

For example, when the user tilts the portable video content reproducing apparatus 110 in the horizontal direction as shown by reference numeral 210, the tilt detection sensor mounted on the portable video content reproducing apparatus 110 may be a portable image content. The playback device 110 detects that the current device is inclined in the horizontal direction. From this, the mode determination unit 116 determines that the portable video content playback device 110 intends to display the video content in the landscape view mode. Can be.

As such, when the image content is displayed in the horizontal view mode as shown by reference numeral 210, the image content is displayed in a state where the entire display screen of the portable image content reproducing apparatus 110 is filled up.

On the other hand, when the user uses the portable video content reproducing apparatus 110 in a vertical direction as shown by reference numeral 220, the tilt detection sensor mounted on the portable video content reproducing apparatus 110 is a portable image. It is detected that the content reproducing apparatus 110 is currently leaking in the vertical direction. From this, the mode determining unit 116 determines that the portable video content reproducing apparatus 110 intends to display the image contents in the vertical view mode. can do.

As such, when the image content is displayed in the portrait view mode as shown at 220, the image content may be displayed only at the upper portion of the display of the portable image content reproducing apparatus 110.

In this case, the first requesting unit 117 determines that the portable video content reproducing apparatus 110 is in the horizontal viewing mode as shown at 210 by the mode determining unit 116. The data transmission request for the video content compressed at the first resolution.

In this case, according to an embodiment of the present invention, the VOD data transmission device 130 stores data about the video content compressed at the first resolution on a data storage, and from the portable video content playback device 110. When a request for transmission of data for the video content compressed at the first resolution is received, the data for the video content compressed at the first resolution stored in the data storage for the portable video content reproducing apparatus 110 is received. Can be transmitted in a streaming manner.

On the other hand, the second requester 118 determines that the portable video content reproducing apparatus 110 is in the portrait view mode as shown at 220 by the mode determining unit 116. Transmit a data transmission request for the video content compressed at a second resolution lower than the first resolution.

In this case, according to an embodiment of the present invention, when the VOD data transmission device 130 receives a request for transmitting data for the video content compressed to the second resolution from the portable video content playback device 110, the data is transmitted. The second resolution of the portable image contents reproducing apparatus 110 may be downscaled by performing downscale compression on the image contents compressed at the first resolution stored in the storage into data having the second resolution. It is possible to transmit the data for the video content, the downscale compression is performed in a streaming manner.

Here, the first resolution may be a high definition of HD class, such as 1080p or 720p, and the second resolution may be a low resolution of SD class, such as 480p.

When the portable video content reproducing apparatus 110 is in the landscape view mode, since the video content is displayed in a state where the display screen of the portable video content reproducing apparatus 110 is full, a high resolution image from the VOD data transmission apparatus 130 is provided. It is necessary to receive the content. However, when the portable video content reproducing apparatus 110 is in the portrait view mode, since the video content is displayed at a small point only on a portion of the display screen of the portable video content reproducing apparatus 110, the high resolution from the VOD data transmission apparatus 130 is determined. There is no need to receive video content. Accordingly, if the portable image contents reproducing apparatus 110 according to the present invention determines that the portable image contents reproducing apparatus 110 is in the vertical viewing mode as shown at 220 by the mode determining unit 116, the second request is made. By transmitting the data transmission request for the video content compressed at low resolution to the VOD data transmission device 130, the unit 118 can reduce the traffic that can occur in the network communication network, which may be imposed when using the mobile communication network Data usage fees can also be lowered.

In this case, according to an embodiment of the present invention, the portable video content reproducing apparatus 110 may further include a resolution table holding unit 119.

The resolution table maintaining unit 119 may include a plurality of different screen size values and predetermined different resolutions corresponding to each of the plurality of different screen size values (the predetermined different resolutions are all lower than the first resolution). Save and maintain the recorded resolution table.

In this regard, information may be recorded in the resolution table as shown in Table 1 below.

복수의 서로 다른 화면 크기 값들Multiple different screen size values	서로 다른 해상도Different resolutions
3.2인치3.2 inches	600p600p
2.8인치2.8 inches	480p480p
2.5인치2.5 inches	320p320p
......	......

In this case, the second request unit 118 may include a size value check unit 120, a resolution check unit 121, and a data request unit 122.

When it is determined that the portable image content reproducing apparatus 110 is in the portrait view mode, the size value checking unit 120 checks the size value of the screen on which the image content is to be played in the portrait view mode.

The resolution checking unit 121 checks the resolution corresponding to the size value for the screen on which the image content is to be played in the portrait view mode with reference to the resolution table.

The data requesting unit 122 determines the checked resolution as the second resolution and transmits a data transmission request for the video content compressed at the second resolution to the VOD data transmission apparatus 130.

In relation to the above, when the portable video content reproducing apparatus 110 is in the portrait view mode, when the size of the screen on which the video content is reproduced in the upper portion of the display is "3.2 inches", the size value checking unit 120 determines In the viewing mode, it is possible to check "3.2 inches" which is a size value for the screen on which the video content is to be played.

Then, the resolution checking unit 121 checks the resolution "600p" corresponding to "3.2 inches" which is a size value for the screen on which the image content is to be played in the portrait view mode with reference to the resolution table as shown in Table 1 above. Can be.

In addition, the data requesting unit 122 determines the determined resolution "600p" as the second resolution and requests the VOD data transmission apparatus 130 to transmit data for the image content compressed at the second resolution. Can be transmitted.

At this time, according to an embodiment of the present invention, the size value check unit 120 is to reproduce the image content in the portrait view mode by the user while the image content is being played at the second resolution in the portrait view mode. When the size of the screen is changed, the size value of the screen on which the image content is to be played may be reconfirmed in the portrait view mode.

For example, while the video content is being played in the portrait view mode in the portable video content reproducing apparatus 110, when a user applies a touch input on a display to enlarge or reduce the screen area on which the video content is played, the size is increased. The value checking unit 120 may reconfirm the size value of the screen on which the image content is to be played in the portrait view mode.

The resolution checking unit 121 may re-confirm the resolution corresponding to the size value reconfirmed with respect to the screen on which the image content is to be played back in the portrait view mode with reference to the resolution table.

Thereafter, the data requesting unit 122 re-determines the reconfirmed resolution as the second resolution and requests a VOD data transmission device 130 to transmit a data request for the image content compressed at the re-determined second resolution. Can be resent

In this way, when the user arbitrarily adjusts the screen size at which the image content is displayed in the portrait view mode, the portable image content reproducing apparatus 110 according to the present invention displays the VOD of the appropriate resolution in response to the screen size adjustment. It may be received from the data transmission device 130.

In step S310, data about the video content broadcasted through the DMB communication network is received from the DMB broadcast transmission device to reproduce the video content.

In step S320, the strength of the wireless signal received through the DMB communication network is measured.

In operation S330, when the strength of the wireless signal is measured to be less than the predetermined reference value, information about the last playback point at which the video content was last played back at the point of time measured below the predetermined reference value is generated.

In operation S340, the VOD data transmission apparatus transmits a transmission request for identification information on the video content, information on the last playback point, and data after the last playback point of the video content.

In operation S350, data after the last playback point of the video content is received in a streaming manner from the VOD data transmission apparatus through a mobile communication network or a wireless LAN network to reproduce the video content after the last playback point.

At this time, according to an embodiment of the present invention, in step S330, information about a playback time corresponding to the last playback point at which the video content was last played may be generated as information on the last playback point.

In this case, when the VOD data transmission device receives a transmission request for identification information on the video content, information on the last playback point, and data after the last playback point of the video content, from the portable video content playback device, After confirming the data corresponding to the identification information of the video content from a data store in which data for a plurality of video contents is stored, the data is based on the information on the playback time corresponding to the last playback point of the video content. The data after the last playback point of the video content may be transmitted to the portable video content reproducing apparatus by using a point corresponding to the playback time among the data for the video content as a streaming method.

In addition, according to an embodiment of the present invention, the operation method of the portable video playback device detects the tilt of the portable video content playback device via a tilt detection sensor and the portable video content playback device in the landscape view mode the image content Determining whether to display the video content in a vertical viewing mode or when the portable video content reproducing apparatus is determined to be in the horizontal viewing mode. Transmitting the request to transmit the data for the image content and if the portable image content reproducing apparatus is determined to be in the portrait view mode, the VOD data transmitting apparatus compressed to a second resolution lower than the first resolution; Request for transmission of data about video content It may further comprise the step of transmitting.

In this case, according to an embodiment of the present invention, the method of operating the portable video content reproducing apparatus includes a plurality of different screen size values and a predetermined different resolution corresponding to each of the plurality of different screen size values (the predetermined The method may further include storing and maintaining a resolution table in which different resolutions are all lower than the first resolution).

In this case, the transmitting of the data transmission request for the video content compressed at the second resolution may be performed when the portable video content reproducing apparatus is determined to be in the vertical viewing mode. Confirming a size value for the screen, checking a resolution corresponding to the size value for the screen on which the image content is to be played in the portrait view mode with reference to the resolution table; And transmitting the data transmission request for the video content compressed to the second resolution to the VOD data transmission device, while the video content is reproduced at the second resolution in the portrait view mode. For the screen on which the video content is to be played back in the portrait view mode. Reconfirming the size value for the screen on which the image content is to be played in the portrait view mode when the image is changed, and reconfirming the size value for the screen at which the image content is to be played in the portrait view mode with reference to the resolution table. Reconfirming the resolution corresponding to the second resolution; retransmitting the reconfirmed resolution to the second resolution, and retransmitting a data transmission request for the video content compressed to the reconstructed second resolution to the VOD data transmission apparatus; It may include.

In addition, according to an embodiment of the present invention, the VOD data transmission device stores data about the video content compressed at the first resolution on a data storage, and the first resolution from the portable video content playback device. When the transmission request for the data about the compressed video content is received, the portable video content reproducing apparatus transmits the data about the video content compressed at the first resolution stored in the data storage in a streaming manner. And when the transmission request for data about the video content compressed to the second resolution is received from the portable video content reproducing apparatus, the data about the video content compressed to the first resolution stored in the data storage unit. Downscale compression to data with a second resolution. For the portable video content reproduction device may transmit the data for the video content is scaled down to compress the second resolution is performed in a streaming manner.

In the above, the operating method of the portable video content reproducing apparatus according to the exemplary embodiment of the present invention has been described with reference to FIG. 3. Here, the operation method of the portable video content playback apparatus according to an embodiment of the present invention may correspond to the configuration of the operation of the portable video content playback apparatus 110 described with reference to FIG. 1. It will be omitted.

The method of operating a portable video content reproducing apparatus according to an embodiment of the present invention may be implemented as a computer program stored in a storage medium for execution by combining with a computer.

In addition, the operating method of the apparatus for reproducing a portable video content according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all the things that are equivalent to or equivalent to the claims as well as the following claims will belong to the scope of the present invention. .

Claims

In the portable video content playback device,

A DMB reproducing unit configured to receive data about image content broadcast through a DMB communication network from a digital multimedia broadcasting (DMB) broadcasting transmission device and to reproduce the image content;

A wireless signal measuring unit measuring the strength of a wireless signal received through the DMB communication network;

A playback point information generator for generating information on the last playback point at which the video content was last played back when the strength of the wireless signal is measured below a predetermined reference value, when the video signal is measured below the predetermined reference value; ;

A video data request unit which transmits, to a Video On Demand (VOD) data transmission device, a transmission request for identification information on the video content, information on the last playback point, and data after the last playback point of the video content; And

Video replacement playback unit for receiving the data after the last playback point of the video content from the VOD data transmission apparatus through a mobile communication network or a wireless LAN in a streaming manner to play the video content after the last playback point

Portable video content playback device comprising a.
The method of claim 1,

The reproduction point information generator

Generating information on a playback time corresponding to the last playback point at which the video content was last played back as information on the last playback point,

The VOD data transmission device

When the portable video content reproducing apparatus receives a request for transmission of identification information on the video content, information on the last playback point, and data after the last playback point of the video content, data for a plurality of video contents is received. Check the data corresponding to the identification information of the video content from the data storage in which the data is stored and play the data among the data for the video content based on the information on the play time corresponding to the last playback point of the video content. And transmitting the data after the last playback point of the video content to the portable video content playback device in a streaming manner, using a point corresponding to time.
The method of claim 1,

A mode for detecting the tilt of the portable video content reproducing apparatus by using a tilt sensor to determine whether the portable video content reproducing apparatus wants to display the video content in a horizontal view mode or a vertical view mode Determination unit;

A first request unit which transmits a data transmission request for the video content compressed at a first resolution to the VOD data transmission device when it is determined that the portable video content reproducing apparatus is in the landscape viewing mode; And

If it is determined that the portable video content reproducing apparatus is in the portrait viewing mode, a second request for transmitting a data transmission request for the video content compressed to a second resolution lower than the first resolution to the VOD data transmitting apparatus; part

Portable video content playback device further comprising.
The method of claim 3,

A plurality of different screen size values and a predetermined different resolution corresponding to each of the plurality of different screen size values, wherein the predetermined different resolutions are all lower than the first resolution. Resolution table holder to maintain

More,

The second request unit

A size value checking unit for checking a size value of a screen on which the image content is to be played in the portrait view mode, when the portable image content reproducing apparatus is determined to be in the portrait view mode;

A resolution checking unit which checks the resolution corresponding to the size value of the screen on which the image content is to be played in the portrait view mode by referring to the resolution table; And

A data request unit which determines the checked resolution as the second resolution and transmits a request for transmitting data for the video content compressed at the second resolution to the VOD data transmission apparatus;

Including;

The size value check unit

If the size of a screen on which the image content is to be played in the portrait view mode is changed by the user while the image content is being played at the second resolution in the portrait view mode, the image content is played in the portrait view mode. Double-check the size value for the screen to be

The resolution check unit

Reconfirming the resolution corresponding to the reconfirmed size value with respect to the screen on which the image content is to be played back in the portrait view mode by referring to the resolution table,

The data request unit

And retransmitting the reconfirmed resolution to the second resolution to retransmit the data transmission request for the video content compressed to the re-determined second resolution to the VOD data transmission device.
The method of claim 3,

The VOD data transmission device

Storing data for the video content compressed at the first resolution on a data storage, and when a request for transmitting data for the video content compressed at the first resolution is received from the portable video content reproducing apparatus, Transmitting data about the video content compressed at the first resolution stored in the data storage to the portable video content reproducing apparatus in a streaming manner;

When a request for transmission of data for the video content compressed to the second resolution is received from the portable video content reproducing apparatus, the data for the video content compressed to the first resolution stored in the data storage is stored. Portable video content playback, which performs downscale compression with data having two resolutions, and transmits data on the video content subjected to downscale compression at the second resolution to the portable video content playback device in a streaming manner. Device.
In the operating method of the portable video content playback device,

Receiving data on video content broadcast through a DMB communication network from a digital multimedia broadcasting (DMB) broadcasting transmission device and playing the video content;

Measuring the strength of a wireless signal received through the DMB communication network;

When the strength of the wireless signal is measured below a predetermined reference value, generating information on the last playback point at which the video content was last played back at a time measured below the predetermined reference value;

Transmitting, to a VOD (Video On Demand) data transmission device, a transmission request for identification information on the video content, information on the last playback point, and data after the last playback point of the video content; And

Receiving the data after the last playback point of the video content from the VOD data transmission apparatus through a mobile communication network or a wireless LAN in a streaming manner to play the video content after the last playback point;

Method of operating a portable video content playback device comprising a.
The method of claim 6,

Generating information about the last play point is

Generating information on a playback time corresponding to the last playback point at which the video content was last played back as information on the last playback point,

The VOD data transmission device

When the portable video content reproducing apparatus receives a request for transmission of identification information on the video content, information on the last playback point, and data after the last playback point of the video content, data for a plurality of video contents is received. Check the data corresponding to the identification information of the video content from the data storage in which the data is stored and play the data among the data for the video content based on the information on the play time corresponding to the last playback point of the video content. A method of operating a portable video content reproducing apparatus for transmitting data from the last reproducing point of the video content to the portable video content reproducing apparatus in a streaming manner using a point corresponding to time.
The method of claim 6,

Detecting a tilt of the portable video content reproducing apparatus by using a tilt sensor to determine whether the portable video content reproducing apparatus wants to display the video content in a landscape view mode or a vertical view mode; ;

If it is determined that the portable video content reproducing apparatus is in the landscape viewing mode, transmitting a request for transmitting data for the video contents compressed at a first resolution to the VOD data transmitting apparatus; And

If it is determined that the portable video content reproducing apparatus is in the portrait viewing mode, transmitting a request for transmitting data for the video contents compressed to a second resolution lower than the first resolution to the VOD data transmitting apparatus;

Operation method of a portable video content playback device further comprising.
The method of claim 8,

A plurality of different screen size values and a predetermined different resolution corresponding to each of the plurality of different screen size values, wherein the predetermined different resolutions are all lower than the first resolution. Steps to maintain

More,

The step of transmitting the data transmission request for the video content compressed at the second resolution is

If it is determined that the portable video content reproducing apparatus is in the vertical viewing mode, checking a size value of a screen on which the video content is to be played in the vertical viewing mode;

Checking a resolution corresponding to a size value of a screen on which the image content is to be played in the portrait view mode by referring to the resolution table;

Determining the confirmed resolution as the second resolution and transmitting a data transmission request for the video content compressed at the second resolution to the VOD data transmission apparatus;

If the size of a screen on which the image content is to be played in the portrait view mode is changed by the user while the image content is being played at the second resolution in the portrait view mode, the image content is played in the portrait view mode. Reconfirming the size value for the screen to be;

Reconfirming the resolution corresponding to the reconfirmed size value with respect to the screen on which the image content is to be reproduced in the portrait view mode by referring to the resolution table; And

Re-determining the reconfirmed resolution to the second resolution and retransmitting a request for transmitting data for the video content compressed to the re-determined second resolution to the VOD data transmission apparatus;

Method of operating a portable video content playback device comprising a.
The method of claim 8,

The VOD data transmission device

Storing data for the video content compressed at the first resolution on a data storage, and when a request for transmitting data for the video content compressed at the first resolution is received from the portable video content reproducing apparatus, Transmitting data about the video content compressed at the first resolution stored in the data storage to the portable video content reproducing apparatus in a streaming manner;

When a request for transmission of data for the video content compressed to the second resolution is received from the portable video content reproducing apparatus, the data for the video content compressed to the first resolution stored in the data storage is stored. Portable video content playback, which performs downscale compression with data having two resolutions, and transmits data on the video content subjected to downscale compression at the second resolution to the portable video content playback device in a streaming manner. How the device works.
A computer-readable recording medium having recorded thereon a program for performing the method of any one of claims 6 to 10.
A computer program stored in a storage medium for executing the method of any one of claims 6 to 10 in combination with a computer.