KR101894889B1 - Method and apparatus for providing video on demand service - Google Patents

Abstract

The present invention relates to a VoD service providing apparatus and an operation method thereof. Disclosed is a technology to improve the performance of the overall VoD service since data can be more quickly provided by preventing an unnecessary resource waste and reducing a load. To this end, a new VoD service transmission efficiency scheme for allowing data optimized for a VoD service to be transmitted is proposed.

Description

TECHNICAL FIELD [0001] The present invention relates to a VoD service providing apparatus and a VoD service providing apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VoD service providing technology, and more particularly, to a new efficient VoD service transmission method in which data optimized for a VoD service is transmitted.

2. Description of the Related Art Recently, users are increasingly using Video On Demand (VoD) services through digital broadcasting. Unlike the over-the-air broadcasting streamed in real time from the contents providing server, the VOD service stores the contents in advance and operates in such a manner that the contents are provided at the time of user's ordering.

The existing VoD service providing method stores and transmits video content as it is, including content created for the purpose of over-the-air broadcasting service, content being screened / scheduled / completed in a movie theater, content transmitted through the Internet, There is a limitation in that transmission efficiency is reduced because video contents including unnecessary information for providing VoD service can not be transmitted.

For example, in the case where empty NULL packets in which no data exists for providing over-the-air broadcasting service and image contents in which meaningless filler data for matching the format are inserted are streamed in real time, In the existing VoD service providing method, since the image contents are stored and provided at the time of the user's order, unnecessary null packet and filler data are transmitted to wastes resources and reduces transmission efficiency.

Accordingly, the present invention proposes a method of eliminating unnecessary information (e.g., filler data, null packet) included in image contents so as to provide VoD contents optimized for the VoD service do.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a new VOD service transmission efficiency scheme, in which optimized data is transmitted to a VoD service.

According to a first aspect of the present invention, there is provided an apparatus for providing a VoD service, the apparatus comprising: means for dividing data transmitted by TS packets, when a program for providing a VoD service is multiplexed and reconstructed into at least one TS packet; A packet managing unit for detecting a null packet based on a result of checking a specific field; If the remaining TS packets after the removal of the null packet of the TS packets are encoded and reconstructed to have at least one NAL unit, a second specific field for identifying the type of the NAL unit, And a unit management unit for detecting Filler Data.

The TS packet includes a TS header and a TS payload, and the first specific field is a field for displaying an identifier for distinguishing data transmitted through the TS payload among at least one field in the TS header .

The packet management unit detects the null packet in which there is no data to be transmitted through the TS payload based on a result of comparing the value of the identifier of the first specific field with a TS specified value And removing it.

The NAL unit includes a NAL header and a NAL payload, and the second specific field is a field for displaying an identifier for identifying a type of the corresponding NAL unit among at least one field in the NAL header .

The unit management unit may further include a supplemental enhancement information (SEI) type corresponding to supplementary supplementary information if the first NAL unit has a value of an identifier of the second specific field having a first NAL specific value, Is determined to have the same value.

Wherein the unit management unit judges that the first NAL unit is the filler data and removes it if the value of the identifier of the first NAL payload associated with the first NAL unit coincides with the value associated with the filter data do.

The unit management unit may determine that the second NAL unit is the filler data and remove the second NAL unit when the value of the identifier of the second specific field is the second NAL unit value .

According to a second aspect of the present invention, there is provided a method of operating a VoD service providing apparatus, the method comprising: when a program for providing a VoD service is multiplexed and reconstructed into at least one TS packet, A packet management step of detecting a null packet based on a result of checking a first specific field for the NACK packet; And a second specific field for identifying a type of the NAL unit when the remaining TS packet from which the null packet is removed is encoded and has at least one NAL unit, And a unit managing step of detecting data (filler data).

The TS packet includes a TS header and a TS payload, and the first specific field is a field for displaying an identifier for distinguishing data transmitted through the TS payload among at least one field in the TS header .

The packet management step detects the null packet in which there is no data to be transmitted through the TS payload based on a result of comparing the value of the identifier of the first specific field with a predetermined TS specific value And then removed.

The NAL unit includes a NAL header and a NAL payload, and the second specific field is a field for displaying an identifier for identifying a type of the corresponding NAL unit among at least one field in the NAL header .

Wherein the unit management step comprises: when the first NAL unit having the value of the identifier of the second specific field has a first NAL specific value, the first NAL unit may perform supplemental enhancement information (SEI) corresponding to the supplementary supplementary information, Type is determined.

The unit managing step determines that the first NAL unit is the filler data and removes it if the value of the identifier of the first NAL payload associated with the first NAL unit matches the value associated with the filter data .

Wherein the unit managing step determines that the second NAL unit is the filler data and removes the second NAL unit if the identifier of the second specific field has a second NAL specific value do.

Therefore, according to the VoD service providing apparatus and the operation method thereof of the present invention, a new VoD service transmission efficiency scheme that allows data optimized for the VoD service to be transmitted is proposed, thereby preventing unnecessary resource waste and reducing load, It is possible to obtain an effect of improving the performance of the overall VoD service.

1 is an exemplary diagram illustrating a communication environment to which the VoD service providing apparatus of the present invention is applied.
2 is a block diagram illustrating a configuration of a VoD service providing apparatus according to an embodiment of the present invention.
3 is an exemplary diagram illustrating a program multiplexing of image contents and a TS packet structure according to an embodiment of the present invention.
4 is an exemplary diagram showing a configuration of a NAL unit when reconfigured into a Network Abstraction Layer (NAL) according to an embodiment of the present invention.
5 is a flowchart illustrating an operation method of a VoD service providing apparatus according to an embodiment of the present invention.

It is noted that the technical terms used herein are used only to describe specific embodiments and are not intended to limit the invention. It is also to be understood that the technical terms used herein are to be interpreted in a sense generally understood by a person skilled in the art to which the present invention belongs, Should not be construed to mean, or be interpreted in an excessively reduced sense. Further, when a technical term used herein is an erroneous technical term that does not accurately express the spirit of the present invention, it should be understood that technical terms that can be understood by a person skilled in the art are replaced. In addition, the general terms used in the present invention should be interpreted according to a predefined or prior context, and should not be construed as being excessively reduced.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or similar elements throughout the several views, and redundant description thereof will be omitted. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

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

FIG. 1 shows a communication environment to which the VoD service providing apparatus of the present invention is applied.

As shown in FIG. 1, the communication environment to which the present invention is applied may have a configuration including a VoD service providing apparatus 100, a user terminal 200, and a content providing server 300.

The VoD service providing apparatus 100 is a device for storing video contents in advance for VoD service provision and transmitting VoD contents at the time of user's order, and in particular, a service to be provided by the present invention, that is, So that unnecessary information included in the video contents is removed to generate and transmit VoD contents, thereby realizing a VoD service transmission efficiency scheme.

Here, the image contents include contents generated for the over-the-air broadcasting service, contents being displayed / scheduled / completed in the movie theaters, contents transmitted through the Internet, and the like, and empty NULL packets, , Filler data inserted without meaning to match the format, and the like.

In the embodiment of the present invention, it is described that unnecessary information for VoD service is NULL packet and filler data. However, the present invention is not limited to this, and other information that is not related to VoD service provision Of course, be included.

Hereinafter, for convenience of description, it will be described that unnecessary information for VoD service provision is null packet and filler data.

That is, when the video content is received from the content providing server 300, the VoD service providing apparatus 100 removes NULL packets and filler data included in the video content, The VoD contents are generated and transmitted to the user terminal 200. More specific contents will be described later.

The user terminal 200 is provided with VoD contents via a network related to VoD service provision.

The content providing server 300 receives the video content from the content provider so that the VoD service can be provided, and provides the video content to the VoD service providing apparatus 100.

Hereinafter, a configuration of a VoD service providing apparatus according to an embodiment of the present invention will be described in detail with reference to FIG.

2, when a program for providing a VoD service is multiplexed and reconfigured into at least one TS packet, the apparatus 100 for providing a VoD service according to the present invention includes: A packet management unit 110 for detecting a null packet based on a result of checking a specific field, and a re-constructing unit 110 for re-constructing at least one NAL unit by encoding the remainder of the TS packet, And a unit management unit 120 for detecting filler data based on a result of checking a second specific field for identifying a type of the NAL unit.

Here, the program for providing the VoD service may be at least one video data, audio, data, etc. constituting the video content received for providing the VoD service from the content providing server 300.

Accordingly, the VoD service providing apparatus 100 generates and provides VoD contents by removing null packets and filler data from the video contents so that data optimized for the VoD service is transmitted, The transmission efficiency can be realized. Hereinafter, each configuration in the VoD service providing apparatus 100 will be described in detail.

The VoD service providing apparatus 100 of the present invention may include a configuration for receiving video contents in cooperation with the content providing server 300 or providing VoD contents to the user terminal 200 ). However, for convenience of explanation, only the main feature configuration will be described.

The packet managing unit 110 performs a function of removing a null packet included in the image content.

More specifically, when the video content for VoD service is received from the content providing server 300, the packet managing unit 110 multiplexes the program of the video content and reconstructs it into at least one TS packet.

In this regard, FIG. 3 shows an example of multiplexing a program of image contents.

3 (a), the packet managing unit 110 stores each elementary stream ES of a program including video, audio, data, and the like that constitute video contents through a packetizer 111 PES stream, and each PES stream is reconstructed through the TS Mux 112 into a TS stream including at least one TS packet.

Here, the TS packet includes a TS header 410 and a TS payload 420, as shown in FIG. 3 (b), as a minimum unit constituting the TS stream.

The TS header 410 includes at least one field F11-F19 for displaying information of a program constituting the TS stream, time information of the program, control information, and the like. In particular, the PID field F15 of the TS header 410 displays an identifier for distinguishing data transmitted through the TS payload 420. [

That is, data transmitted through the TS payload 420 is distinguished according to the value of an identifier displayed in the PID field F15. In the case of a null packet, Quot; 0x1FFF "which is a predetermined TS specified value.

Accordingly, the packet management unit 110 can confirm the PID field F15 as a first specific field for separating data transmitted per TS packet.

As a result, when the image content is reconstructed into a TS stream including at least one TS packet according to the above-described procedure, the packet management unit 110 stores a PID field F15, which is a first specific field for identifying the data transmitted per TS packet It is possible to detect a null packet based on the result of checking.

That is, if the data transmitted through the TS payload 420 is present based on the result of comparing the value of the identifier of the PID field F15 for each TS packet with the predetermined TS specified value (0x1FFF) (Null Packets) that are not transmitted.

If the value of the identifier of the PID field F15 matches the predetermined TS specified value 0x1FFF as a result of the comparison, the packet management unit 110 determines that the TS packet does not contain data transmitted via the TS payload 420 It is determined that the packet is a null packet.

On the other hand, if the value of the identifier of the PID field F15 does not coincide with the predetermined TS specified value (0x1FFF), the packet managing unit 110 stores the remainder value of Table 1 excluding the predetermined TS specified value (0x1FFF) 0x0000-0x1FFE), it is determined that data to be transmitted through the TS payload 420 exists.

When a null packet is detected in accordance with the above-described procedure, the packet managing unit 110 transmits the remaining TS packets of the TS stream from which the null packet has been removed to the unit managing unit 120.

The unit management unit 120 removes the filler data from the remaining TS packets from which null packets have been removed, thereby generating VoD contents.

More specifically, when the remaining TS packets whose Null Packets have been removed from the TS stream are received from the packet management unit 110, the unit management unit 120 encodes the remaining TS packets for network transmission and transmits the encoded TS packets to at least one NAL unit (NAL Unit).

In this regard, FIG. 4 shows an example of reconfiguration in the Network Abstraction Layer (NAL).

As shown in FIG. 4A, the unit management unit 120 transmits the remaining TS packets whose null packets are removed from the TS stream to a NAL stream including at least one NAL packet for network transmission Reorganize.

Herein, the NAL packet includes a NAL unit (NAL Unit) and a Raw Byte Sequence Payload (RBSP) as a minimum unit constituting the NAL stream, and includes a NAL header 510 as shown in FIG. 4 (b) And the NAL payload 520 where the RBSP is located.

The NAL header 510 includes at least one field F21-F34 for displaying information necessary for data decoding. In particular, the type field F23 of the NAL header 510 displays an identifier for identifying the type of the corresponding NAL unit. That is, the type of the corresponding NAL unit is determined by the SPS type, the PPS type, the SEI type, the slice type, the filler data type, etc. according to the value of the identifier displayed in the type field F23.

Accordingly, the unit management unit 120 can confirm the type field F23 with a second specific field for identifying the type of the corresponding NAL unit.

As a result, when the remaining TS packets having null packets removed from the TS stream are reconstructed into a NAL stream in accordance with the above-described procedure, the unit management unit 120 transmits a NAL header (a second specific field for identifying the type of the NAL unit) Filler data can be detected on the basis of the result of checking the type field F23 in the field F22.

That is, the unit management unit 120 confirms the predetermined NAL specific value related to the function of the filler data among the identifiers of the type field F23. Here, the preset NAL specific value is a value that can confirm that the filler data is inserted in the NAL payload of the corresponding NAL unit. If the type of the NAL unit is the SEI type mentioned in Table 2 Quot; 6 "to be distinguished and" 12 " to be distinguished by the filler data type may correspond to this NAL specific value.

Hereinafter, the process of detecting and removing filler data (Filler Data) when the NAL specific value of the type field F23, which is the second specific field, is "6 " I will.

The unit management unit 120 determines that the first NAL unit having the value of the identifier of the type field F23 that is the second specific field has the first NAL specification value 6, It is determined that the SEI type corresponds to the SEI type.

Here, in the case of the SEI type, supplemental additional information such as the timing of video coding is provided, so that it can be notified as additional information that the filler data is inserted in the image content.

To this end, as shown in Table 3, the value of the identifier of the NAL payload for distinguishing the supplementary supplementary information to be carried on the SEI payload, which is the first NAL payload associated with the first NAL unit, will be.

Accordingly, when the first NAL unit is determined to be the SEI type, the unit management unit 120 transmits a first NAL payload related to the first NAL unit, that is, a NAL payload for distinguishing supplementary supplementary information sent to the SEI payload It is possible to determine whether the filler data (Filler Data) is inserted by checking the value of the identifier of the load.

For example, the identifier "3" of the first NAL payload is used to insert the filler data into the image content among the identifiers of the NAL payload, and the size of the first NAL payload is "5 & , The unit management unit 120 recognizes the identifier "3" of the first NAL payload in advance with a value associated with the filter data. Thereafter, when the value of the identifier of the first NAL payload associated with the first NAL unit matches the value (3) associated with the filter data, the unit management unit 120 determines that the filler data is inserted into the first NAL payload And deletes "0xFF bytes" as much as the size of the first NAL payload as shown in Table 4 to generate VoD contents.

As a result, the unit management unit 120 determines that the value of the identifier of the type field F23 in the second specific field of the at least one NAL unit, that is, the NAL header 510 is the first NAL having the first NAL specification value 6 If the unit exists, the value of the identifier of the first NAL payload associated with the first NAL unit after determining that the first NAL unit has the SEI type corresponding to the supplemental supplemental information is the value associated with the filter data (e.g., 3 , It is determined that the filler data is inserted in the first NAL payload, and "0xFF bytes" is removed by the size (e.g., 5) of the first NAL payload to generate VoD content.

Next, the process of detecting and removing the filler data when the NAL specific value of the type field F23, which is the second specific field, is "12 " would.

The unit management unit 120 determines that the second NAL unit has a filler data type when the second NAL unit whose value of the identifier of the type field F23 which is the second specific field has the second NAL specification value 12 exists .

If the type of the second NAL unit itself indicates filler data, the unit management unit 120 determines that the filler data is inserted in the second NAL payload associated with the second NAL unit, Quot; 0xFF bytes "as much as the size of RBSP (Raw Byte Sequence Payload) included in the load, thereby generating VoD content.

Hereinafter, a process of generating and transmitting VoD content by removing unnecessary information included in image content in the VoD service providing apparatus of the present invention will be described in more detail with reference to FIG. Hereinafter, for convenience of explanation, reference will be made to the above-mentioned reference numerals in FIGS. 1 to 4.

5, when the video content for providing a VoD service is received from the content providing server 300, the VoD service providing apparatus 100 of the present invention multiplexes the program of the video content to generate at least one TS packet (S100, S101).

More specifically, the VoD service providing apparatus 100 transmits each elementary stream ES of a program including video, audio, data, and the like that constitute video contents to the packetizer 111 as shown in FIG. 3A. To a PES stream and then each PES stream is reconstructed through TS Mux 112 into a TS stream containing at least one TS packet.

Here, the TS packet may be expressed as a TS payload 420 in which the TS header 410 and the RBSP are located, as shown in FIG. 3 (b), as a minimum unit constituting the TS stream.

The TS header 410 includes at least one field F11-F19 for displaying information of a program constituting the TS stream, time information of the program, control information, and the like. In particular, the PID field F15 of the TS header 410 displays an identifier for distinguishing data transmitted through the TS payload 420. [

That is, the data transmitted through the TS payload 420 is distinguished according to the value of the identifier displayed in the PID field F15. When the value is an Null packet, Quot; 0x1FFF ", which is a preset TS specific value, as shown in Table 1.

Accordingly, the VoD service providing apparatus 100 can confirm the PID field F15 with the first specific field for identifying the data transmitted per TS packet (S102). The VoD service providing apparatus 100 then transmits the TS payload 420 based on the result of comparing the value of the identifier of the PID field F15 which is the first specific field for each TS packet with the predetermined TS specified value 0x1FFF, (Null Packet) in which there is no data transmitted through the Null Packet (S103, S104).

That is, if it is determined in step S103 that the value of the identifier of the PID field F15 matches the predetermined TS specified value (0x1FFF), the VoD service providing apparatus 100 transmits the TS packet to the TS payload 420 It is determined that the transmitted data is a null packet.

On the other hand, if it is determined in step S103 that the value of the identifier of the PID field F15 does not match the predetermined TS specified value (0x1FFF), the VoD service providing apparatus 100 determines whether the value of the identifier (0x0000-0x1FFE) in Table 1, it is determined that data to be transmitted through the TS payload 420 exists.

When a Null Packet is detected in accordance with the above-described procedure, the VoD service providing apparatus 100 encodes the remaining TS packets of the TS stream from which Null Packets have been removed, and has at least one NAL Unit NAL stream (S105).

More specifically, the VoD service providing apparatus 100 transmits the remaining TS packets whose null packets (null packets) of the TS stream have been removed to a NAL packet including at least one NAL packet for network transmission as shown in FIG. ≪ / RTI >

Herein, the NAL packet includes a NAL unit (NAL Unit) and a Raw Byte Sequence Payload (RBSP) as a minimum unit constituting the NAL stream, and includes a NAL header 510 as shown in FIG. 4 (b) And a NAL payload 520. [

The NAL header 510 includes at least one field F21-F34 for displaying information necessary for data decoding. In particular, the type field F23 of the NAL header 510 displays an identifier for identifying the type of the corresponding NAL unit. That is, the type of the corresponding NAL unit is determined by the SPS type, the PPS type, the SEI type, the slice type, the filler data type, etc. according to the value of the identifier displayed in the type field F23.

Accordingly, the VoD service providing apparatus 100 can confirm the type field F23 with a second specific field for distinguishing the type of the corresponding NAL unit (S106). Thereafter, the VoD service providing apparatus 100 detects filler data based on a result of checking the type field F23 in the NAL header 510, which is a second specific field for identifying the type of the NAL unit .

That is, the VoD service providing apparatus 100 confirms the predetermined NAL specific value related to the function of the filler data among the identifiers of the type field F23. Here, the preset NAL specific value is a value that can confirm that the filler data is inserted in the NAL payload of the corresponding NAL unit. If the type of the NAL unit is the SEI type mentioned in Table 2 Quot; 6 "to be distinguished and" 12 " to be distinguished by the filler data type may correspond to this NAL specific value.

Accordingly, the VoD service providing apparatus 100 determines whether or not there is a first NAL unit whose identifier value of the type field F23 which is the second specific field has the first NAL specification value 6 (S107 ).

As a result of the determination in step S107, if there is a first NAL unit in which the value of the identifier of the type field F23, which is the second specific field, has the first NAL specification value 6, the VoD service providing apparatus 100 transmits, The type of the NAL unit is determined as the SEI type indicating supplementary additional information.

Here, in the case of the SEI type, supplemental additional information such as the timing of video coding is provided, so that it can be notified as additional information that the filler data is inserted in the image content.

To this end, as shown in Table 3, the value of the identifier of the NAL payload for distinguishing the supplementary supplementary information to be carried on the SEI payload, which is the first NAL payload associated with the first NAL unit, will be.

When the first NAL unit is determined to be the SEI type, the VoD service providing apparatus 100 determines whether a first NAL payload related to the first NAL unit, i.e., supplementary additional information to be sent to the SEI payload, It is possible to determine whether the filler data is inserted by checking the value of the identifier of the NAL payload.

For example, the identifier "3" of the first NAL payload is used to insert the filler data into the image content among the identifiers of the NAL payload, and the size of the first NAL payload is "5 & , The VoD service providing apparatus 100 recognizes the identifier "3" of the first NAL payload in advance with a value associated with the filter data. Thereafter, when the value of the identifier of the first NAL payload associated with the first NAL unit matches the value (3) associated with the filter data, the VoD service providing apparatus 100 determines whether the filler data is inserted in the first NAL payload And deletes "0xFF bytes" as much as the size of the first NAL payload as shown in Table 4 to generate VoD contents.

As a result, the VoD service providing apparatus 100 determines that the value of the identifier of the type field F23 in the second specific field of the at least one NAL unit, that is, the NAL header 510, 1 NAL unit exists, the value of the identifier of the first NAL payload associated with the first NAL unit after determining that the first NAL unit has the SEI type corresponding to the supplemental supplemental information is a value associated with the filter data : 3), it is determined that the filler data is inserted into the first NAL payload, and "0xFF byte" is removed by the size (e.g., 5) of the first NAL payload to generate VoD contents (S108-S114 ).

On the other hand, if it is determined in step S107 that the first NAL unit having the identifier value of the type field F23, which is the second specific field, has the first NAL specification value 6, the VoD service providing apparatus 100 , It is determined whether or not a second NAL unit whose identifier value of the type field F23 which is the second specific field has the second NAL specification value 12 exists (S111).

As a result of the determination in step S111, if there is a second NAL unit in which the value of the identifier of the type field F23, which is the second specific field, has the second NAL specification value 12, the VoD service providing apparatus 100, It is determined that the NAL unit is a filler data type.

When the type of the second NAL unit itself indicates filler data, the VoD service providing apparatus 100 determines that the filler data is inserted in the second NAL payload related to the second NAL unit, VoD content is generated by removing "0xFF bytes" as much as the size of RBSP (Raw Byte Sequence Payload) included in the NAL payload (S112-S114).

On the other hand, if it is determined in step S111 that the second NAL unit having the identifier value of the type field F23, which is the second specific field, has the second NAL specification value 12, the VoD service providing apparatus 100 , It is determined that there is no null packet (NULL packet) and filler data (unnecessary information) in the image content, and the process of removing unnecessary information is omitted and VoD content is generated.

As described above, according to the VoD service providing apparatus and the operation method of the present invention, it is possible to prevent unnecessary resource waste and reduce the load by proposing a new VoD service transmission efficiency scheme in which data optimized for the VoD service is transmitted. It is possible to provide data more quickly and improve the performance of the overall VoD service.

The apparatus and method for providing a VoD service according to an embodiment of the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be known to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media 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 machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

According to the VoD service providing apparatus and the operation method thereof of the present invention, a new VoD service transmission efficiency scheme for transmitting data optimized for the VoD service is proposed, so that data can be provided more quickly by preventing unnecessary resource waste and reducing load In order to improve the performance of the overall VoD service, it is possible to overcome the limitations of the existing technology, so that it is not only the use of the related technology but also the possibility of marketing or operating the applicable device, This is an invention that is industrially usable because it is possible.

100: VoD service providing device
110: Packet management unit 120:
200: user terminal
300: Content providing server

Claims (14)

When a program for providing a VoD service is multiplexed and reconstructed into at least one TS packet, a first specific field for identifying the data for each TS packet is checked, and a value of an identifier of the first specific field and a predetermined TS specific value A packet management unit for detecting and removing a null packet in which there is no data transmitted through the TS payload in the TS packet based on the comparison result; And
If the remaining TS packets after the removal of the null packet of the TS packets are encoded and reconstructed to have at least one NAL unit, a second specific field for identifying the type of the NAL unit, And a unit management unit for detecting Filler Data;
The unit management unit,
When there is a first NAL unit having a first NAL specific value as an identifier of the second specific field, it is determined that the first NAL unit has a supplemental enhancement information (SEI) type corresponding to supplementary supplementary information ,
If the value of the identifier of the first NAL payload associated with the first NAL unit matches the value associated with the filler data, the first NAL unit determines that the filler data is the filler data and removes the first NAL unit To the VoD service providing apparatus. The method according to claim 1,
The TS packet includes a TS header and a TS payload,
Wherein the first specific field comprises:
And a field for displaying an identifier for distinguishing data transmitted through the TS payload among at least one field in the TS header. delete The method according to claim 1,
The NAL unit includes a NAL header and a NAL payload,
Wherein the second specific field comprises:
And an identifier for identifying a type of the corresponding NAL unit among at least one field in the NAL header. delete delete The method according to claim 1,
The unit management unit,
And the second NAL unit judges that the second NAL unit is the filler data and removes the second NAL unit when there is a second NAL unit having a second NAL specific value as an identifier of the second specific field. The VoD service providing apparatus. When a program for providing a VoD service is multiplexed and reconstructed into at least one TS packet, a first specific field for identifying the data for each TS packet is checked, and a value of an identifier of the first specific field and a predetermined TS specific value A packet management step of detecting and removing a null packet in which there is no data transmitted through the TS payload in the TS packet based on the comparison result; And
If the remaining TS packets after the removal of the null packet of the TS packets are encoded and reconstructed to have at least one NAL unit, a second specific field for identifying the type of the NAL unit, And a unit management step of detecting Filler Data;
The unit management step includes:
If there is a first NAL unit having a first NAL specific value as an identifier of the second specific field, the first NAL unit determines that the first NAL unit has a supplemental enhancement information (SEI) type corresponding to supplementary supplementary information ,
If the value of the identifier of the first NAL payload associated with the first NAL unit matches the value associated with the filler data, the first NAL unit determines that the filler data is the filler data and removes the first NAL unit The method comprising the steps of: 9. The method of claim 8,
The TS packet includes a TS header and a TS payload,
Wherein the first specific field comprises:
Wherein the field is a field for displaying an identifier for distinguishing data transmitted through the TS payload among at least one field in the TS header. delete 9. The method of claim 8,
The NAL unit includes a NAL header and a NAL payload,
Wherein the second specific field comprises:
And a field for displaying an identifier for identifying a type of the corresponding NAL unit among at least one field in the NAL header. delete delete 9. The method of claim 8,
The unit management step includes:
Wherein the second NAL unit judges that the second NAL unit is the filler data, and removes the second NAL unit if the second NAL unit has a value of the identifier of the second specific field, How it works.

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