KR101706950B1 - A method and an apparatus for 3-dimensional broadcast signal transmitting/receiving - Google Patents

Abstract

In particular, the present invention relates to a method and an apparatus for transmitting a 3D broadcasting signal to a portable or mobile broadcasting receiver by extending the ATSC-M / H transmission standard, and a method and apparatus for transmitting the 3D broadcasting signal through the above- To a method and apparatus for receiving a 3D broadcast signal. According to another aspect of the present invention, there is provided a 3D broadcasting signal transmission method including the steps of: encoding mobile data including basic video data and additional video data for a 3D broadcasting program according to a Forward Error Correction-FEC (Coding) Encoding signaling information including TPC (Transmission Parameter Channel) data and FIC (Fast Information Channel) data including basic video data and transmission information on the additional video data, and encoding the signaling information including FIC coding parameters according to the FEC coding parameters. Forming a plurality of mobile data groups including the encoded mobile data and the encoded signaling information and transmitting the plurality of sets of mobile data groups through a plurality of slots included in a transmission frame .
According to another aspect of the present invention, there is provided a 3D broadcasting signal receiving method including receiving a plurality of sets of mobile data groups including basic video data and additional video data for a 3D broadcasting program through a plurality of slots included in a transmission frame, The method comprising: decoding TPC data contained in a plurality of sets of mobile data groups; using the decoded TPC data to generate FEC frames (or error correction And decoding and displaying the video data and the audio data included in the decoded frame, respectively.

Description

TECHNICAL FIELD [0001] The present invention relates to a 3D broadcast signal transmitting / receiving method and a 3D broadcast signal transmitting /

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for transmitting and receiving three-dimensional broadcast signals, and more particularly, to transmitting and receiving basic video data and additional video data for a 3D broadcasting program when mobile data is transmitted.

In general, three-dimensional (3D) images (or stereoscopic images) provide a stereoscopic effect using the stereoscopic principle of the two eyes. Since human beings perceive perspective through the binocular parallax due to the difference between the two eyes, that is, the distance between the two eyes about 65mm away, the 3D image provides an image so that the left eye and the right eye are each associated with a planar image It is possible to provide three-dimensional feeling and perspective.

Such 3D image display methods include a stereoscopic method, a volumetric method, and a holographic method. In the stereoscopic method, a left view image for viewing in the left eye and a right view image for viewing in the right eye are provided so that the left and right eyes respectively view the left view image and the right view image through the polarizing glasses or the display device itself Allow 3D effects to be recognized.

In the stereoscopic method, a pair of left and right images obtained by photographing the same subject with a left camera and a right camera separated by a predetermined distance are used. The multi-view image uses three or more images acquired from three or more cameras having a certain distance or angle. Hereinafter, the present invention will be described with reference to a stereoscopic method, but the spirit of the present invention may be applied to the multi-point method.

The stereoscopic image or the multi-view image can be compression-coded and transmitted in various ways including MPEG (Moving Picture Experts Group). For example, a stereoscopic image or a multi-view image can be compression-coded and transmitted in the H.264 / AVC (Advanced Video Coding) scheme. At this time, the receiving system can obtain the 3D image by decoding the reception image in the reverse of the H.264 / AVC coding scheme.

Also, one of the left view image and the right view image of the stereoscopic image or one of the multi-view images is allocated as a base layer image and the remaining image is assigned as an enhancement layer image, Can be encoded in the same manner as the monoscopic image, and the image of the enhancement layer can be encoded and transmitted only for the relationship information between the base layer and the enhancement layer. JPEG, MPEG-2, MPEG-4, H.264 / AVC, or the like can be used as an example of the compression enhancement method for the base layer image, and the present invention uses the H.264 / AVC scheme as an embodiment . The compression coding method for the image of the upper layer is H.264 / SVC (Scalable Video Coding) or MVC (Multi-view Video Coding).

Meanwhile, the conventional terrestrial DTV transmission / reception standard is based on 2D video content. Accordingly, there is no specific method for transmitting a broadcast signal so that the portable broadcast receiver can receive a 3D broadcast signal.

Particularly, in the case of such a 3D broadcasting, even when a broadcasting signal is transmitted and received in an existing 2D broadcasting receiver, it must be compatible with a broadcasting signal except for a broadcasting signal for 3D broadcasting. Therefore, it is necessary to distinguish the basic video data for the existing 2D broadcasting and the video data for the 3D broadcasting addition in order to ensure compatibility.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an ATSC-M / H transmission standard in which basic video data that can be received by an existing 2D broadcast receiver included in mobile data, And transmitting and receiving signaling information including transmission / reception information for additional video data for the 3D broadcasting signal transmission and reception.

It is also an object of the present invention to form a plurality of mobile data groups according to FEC parameters using mobile data and signaling information including basic video data and additional video data in the ATSC-M / H transmission standard, And transmitting the 3D broadcasting signal through a plurality of slots included in the transmission frame.

The 3D broadcasting signal transmission method according to the present invention includes the steps of encoding mobile data including basic video data and additional video data for a 3D broadcasting program according to a Forward Error Correction (FEC) coding parameter, Encoding signaling information including TPC (Transmission Parameter Channel) data and FIC (Fast Information Channel) data including transmission information for the additional video data; and encoding the encoded mobile data and the encoding Forming a plurality of mobile data groups including the signaling information, and transmitting the set of the plurality of mobile data groups through a plurality of slots included in a transmission frame.

In addition, the 3D broadcasting signal transmission apparatus according to the present invention may include a first encoder for encoding mobile data including basic video data and additional video data for a 3D broadcasting program according to FEC coding parameters, and a second encoder for encoding the basic video data and the additional video data A second encoder to encode signaling information including TPC data and FIC data including transmission information for the encoded data and the encoded signaling information in accordance with the FEC coding variable to form a plurality of mobile data groups including the encoded mobile data and the encoded signaling information And a transmitter for transmitting the set of the plurality of mobile data groups through a plurality of slots included in the transmission frame.

A 3D broadcasting signal receiving method according to the present invention includes the steps of receiving a set of a plurality of mobile data groups including basic video data and additional video data for a 3D broadcasting program through a plurality of slots included in a transmission frame, Decoding the TPC data included in the set of mobile data groups of the plurality of mobile data groups by using the decoded TPC data, Frame), and decoding and displaying the video data and the audio data included in the decoded frame, respectively.

The 3D broadcasting signal receiving apparatus according to the present invention includes a receiving unit for receiving a plurality of sets of mobile data groups including basic video data and additional video data for a 3D broadcasting program through a plurality of slots included in a transmission frame, A first decoding unit for decoding TPC data included in a plurality of sets of mobile data groups, a FEC frame for collecting the plurality of mobile data groups included in the plurality of sets of mobile data groups using the decoded TPC data Or an error correction decoding frame) and a display unit for decoding and displaying the video data and the audio data included in the decoded frame, respectively.

The 3D broadcasting signal transmitting and receiving method and apparatus according to the present invention have the following effects.

First, since basic video data for 2D broadcasting and transmission information of additional video data for 3D broadcasting are transmitted to TPC and FIC data, the receiver can distinguish and receive information for 3D broadcasting through the transmission information. Therefore, there is compatibility with a receiver that receives only 2D broadcasts.

Second, since 3D broadcasting can be implemented using the ATSC-M / H standard, it is possible to transmit stable 3D broadcasting signals of mobile data to various distortions and noises occurring in the channels.

Thirdly, since the 3D broadcasting request signal can be transmitted from the receiving side, a 3D broadcasting service for user's convenience can be provided.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments but should be determined according to the claims.

1 is a block diagram in accordance with an embodiment of a transmission system in accordance with the present invention.
2 is a diagram illustrating an M / H frame structure according to an embodiment of the present invention.
3 is an embodiment of a stereoscopic image multiplexing format of various image formats for implementing 3D broadcasting
4 is a diagram illustrating an embodiment in which a single parade according to the present invention is assigned to a slot in an M / H frame.
FIG. 5 shows an embodiment for transmitting a plurality of parides to one M / H frame according to the present invention.
FIG. 6 shows an embodiment in which the process of allocating a plurality of parades in FIG. 5 is extended to five subframes in one M / H frame.
7 is a block diagram showing the structure of a signaling encoder 113 according to the present invention.
Figure 8 is an embodiment of a table including TPC data according to the present invention.
FIG. 9 illustrates an embodiment in which mobile data groups including basic video data and additional video data for a 3D broadcast program according to the present invention are transmitted through different parades.
FIG. 10 shows an embodiment in which transmission information according to FIG. 9 is shown in a table including TPC data.
11 is an embodiment in which mobile data groups including basic video data and additional video data for a 3D broadcasting program according to the present invention are transmitted through the same parade.
FIG. 12 shows an embodiment in which the transmission information according to FIG. 11 is shown in a table including TPC data.
FIG. 13 illustrates an embodiment in which, when a receiver requests additional video data for a 3D broadcast signal, the transmitter transmits mobile data groups including additional video data.
FIG. 14 shows another embodiment in which, when a receiver requests additional video data for a 3D broadcast signal, the transmitter transmits mobile data groups including additional video data.
15 is a diagram illustrating an embodiment of a method for transmitting a 3D broadcasting request signal from a receiving side to a transmitting side and receiving the 3D broadcasting request signal.
16 is a diagram illustrating another embodiment of a method of transmitting and receiving a 3D broadcasting request signal from a receiving side to a transmitting side.
17 is a configuration block diagram of a receiving system according to an embodiment of the present invention.
18 is a block diagram illustrating an embodiment of a signaling decoder 1706 according to the present invention.
FIG. 19 is a flowchart illustrating a 3D broadcasting signal transmission method according to an embodiment of the present invention.
FIG. 20 is a flowchart illustrating a 3D broadcasting signal receiving method according to an embodiment of the present invention.

According to another aspect of the present invention, there is provided a method for transmitting 3D broadcasting signals, the method including transmitting basic data for a 3D broadcasting program and mobile data including additional video data to a forward error correction (FEC) Encoding,

 Encoding signaling information including TPC (Transmission Parameter Channel) data and FIC (Fast Information Channel) data including transmission information of the basic video data and the additional video data,

Forming a plurality of mobile data groups according to the FEC coding parameters, the mobile data groups including the encoded mobile data and the encoded signaling information;

And transmitting the set of the plurality of mobile data groups through a plurality of slots included in a transmission frame.

The mobile data groups may comprise first mobile data groups according to a first FEC coding variable and second mobile data groups according to a second FEC coding variable.

In this case, the first mobile data groups may include the basic video data and the second mobile data groups may include the additional video data.

The TPC data may include 3D broadcast information indicating whether 3D broadcasting is available, mobile data group information indicating whether the mobile data groups are the first mobile data groups or the second mobile data groups, And second mobile data group information indicating a mobile data group paired with the groups.

Also, if the first FEC coding variable and the second FEC coding variable are the same, the basic video data and the additional video data may be separately included in the mobile data groups, respectively.

In this case, the TPC data includes mobile data group information indicating the number and position of mobile data groups including the basic video data, 3D broadcasting information (second identifier) indicating whether 3D broadcasting is possible, And second mobile data group information indicating the number of data groups.

According to another aspect of the present invention, there is provided a 3D broadcast signal receiving method,

Receiving a set of a plurality of mobile data groups including basic video data and additional video data for a 3D broadcast program through a plurality of slots included in a transmission frame,

Decoding the TPC data included in the set of the plurality of mobile data groups,

Decoding an FEC frame (or an error correction decoding frame) which is a collection of the plurality of mobile data groups included in the set of the plurality of mobile data groups using the decoded TPC data; and

And decoding and displaying the video data and the audio data included in the decoded frame, respectively.

The mobile data groups may comprise first mobile data groups according to a first FEC coding variable and second mobile data groups according to a second FEC coding variable. In this case, when a 3D broadcast viewing request signal is input from the user,

And receiving a second set of mobile data groups including the additional video data through a plurality of slots included in the transmission frame.

In addition, when the 3D broadcast viewing request signal is inputted from the user, the method may further include receiving mobile data groups including the additional video data through the plurality of slots included in the transmission frame as another method have.

Other objects, features and advantages of the present invention will become apparent from the detailed description of embodiments with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a configuration and an operation of an embodiment of the present invention will be described with reference to the accompanying drawings, and the configuration and operation of the present invention shown in and described by the drawings will be described as at least one embodiment, The technical idea of the present invention and its essential structure and action are not limited.

VSB (Vestigial Sideband) transmission system adopted as a digital broadcasting standard in North America and Korea has a disadvantage in that reception performance of a receiving system is deteriorated in a poor channel environment due to a single carrier system. Particularly, in the case of a portable or mobile broadcast receiver, robustness against channel change and noise is further required, so that when the mobile data is transmitted using the VSB transmission method, the reception performance is further deteriorated. Accordingly, in order to improve the reception performance, the ATSC-M / H standard has been developed as a method of performing additional coding on mobile data and transmitting the same to provide a method and an apparatus for transmitting a broadcasting signal and noise-resistant broadcasting signals.

The standard M / H (or MH) is the first letter of each of a mobile and a handheld, and is used as a concept opposite to fixed data.

The fixed data is data that can be received by the fixed receiving system. For convenience of description, the fixed data is referred to as main data or main service data in the present invention. The main data may include audio / video (A / V) data. That is, the main data may include HD (High Definition) or SD (Standard Definition) A / V data, and various data for data broadcasting may be included.

The M / H service data includes at least one of mobile service data and handheld service data. For convenience of description, the M / H service data may be referred to as mobile data or mobile service data do. At this time, the mobile data may include not only M / H service data, but also service data indicating movement or carrying, so that the mobile data will not be limited to the M / H service data.

The mobile data defined above may be data having information such as a program execution file, stock information, etc., or A / V data. In particular, the mobile data may be A / V data having a smaller resolution and a smaller data rate than the main data as service data for a portable or mobile terminal (or broadcast receiver). For example, if the A / V codec used for the existing main service is an MPEG-2 codec, the A / V codec for mobile service may be MPEG-4 Advanced Video Coding (AVC), and Scalable Video Coding (SVC). Also, any kind of data can be transmitted with the mobile data. For example, TPEG (Transport Protocol Expert Group) data for broadcasting traffic information in real time can be transmitted as mobile data.

In addition, the data service using the mobile data includes a weather service, a traffic service, a securities service, a viewer participation quiz program, a real-time opinion survey, an interactive education broadcast, a game service, a plot of drama, Providing information on programs by service, media, hourly, or topic that enables information service, information on past competitions of sports, profiles and grades of athletes, and product information and orders And the present invention is not limited thereto.

Therefore, in the ATSC-M / H standard, main data and mobile data can be multiplexed and transmitted to the same physical channel without affecting reception of main data in the existing receiving system at all. In addition, mobile data can be transmitted and received by performing additional encoding on mobile data, and stable transmission of mobile data is possible even with various distortions and noises occurring in the channel.

1 is a block diagram in accordance with an embodiment of a transmission system in accordance with the present invention.

As shown in FIG. 1, the transmission system mainly includes a packet timing and PCR (Packet Timing and PCR Adjustment) compensating unit (100) for receiving main data, a preprocessing A pre-processor 110, a packet mux 120, a post-processor 130, a Sync Mux 140, a Pilot Inserter 150 A modulator (8-VSB modulator) 160, and a transmission unit (170). The packet timing and PCR compensation unit 100 compensates for the packet including the mobile data and the packet not including the mobile data in the time division multiplexing process because the displacement is different.

The preprocessing unit 110 performs additional encoding on the input mobile data. The mobile data processed by the preprocessing unit 110 can quickly and strongly respond to noise and channel changes.

The preprocessor 110 includes a Reed-Solomon (RS) frame encoder 111, a block processor 112, a signaling encoder 113, a group formatter 114 , And a packet formatter 115. [0031]

The RS frame encoder 111 may form at least one RS frame through RS-Cyclic Redundancy Check (CRC) encoding after data-rendering the mobile data. And may include a plurality of RS frame encoders according to the number of RS frames. The RS frame encoder 111 divides the RS frame formed as described above into a plurality of RS frame portions and outputs the RS frame portions.

The block processor 112 performs Serially Concatenated Convolutional Code (SCCC) outer encoding on the output of the RS frame encoder 111. [ The block processor 112 forms an SCCC block by dividing one RS frame portion of the plurality of RS frame portions, performs convolutional encoding on the data included in the SCCC block, And outputs the data block.

The signaling encoder 113 may perform Forward Error Correction (FEC) coding on the signaling information inserted in the mobile data group generated by the group formatter 114. The signaling information may include Transmission Parameter Channel (TPC) data and Fast Information Channel (FIC) data. This will be described later.

The group formatter 114 forms a mobile data group or a data group using the data included in the mobile data block output from the block processor 112 and the signaling information and Trellis Coded Modulation (TCM) initialization data.

The packet formatter 115 may add an MPEG header having a packet PID as a final step of the preprocessing unit 100 to generate a mobile packet of 118 packets per group.

The post-processing unit 130 performs post-processing for modulating the main data according to the VSB scheme. The receiver can distinguish and process the multiplexed main data and the preprocessed mobile data through the packet mux 120 of the transmitter.

The post-processing unit 130 includes a modulated data randomizer 131, an RS frame encoder 132, a data interleaver 133, a non-systematic RS encoder an encoder 134, a parity replica 135, and a trellis encoder 136.

The data renderer 131 is a first block of the post-processing unit 130, and can perform data rendering on main data and MPEG header, and bypass data rendering on mobile data. In addition, only a part of the mobile data packet can be rendered. For example, when the preprocessing unit 110 performs randomization on the mobile data, the data renderer 131 discards the synchronization byte among the 4-byte MPEG headers included in the mobile data packet, And output it to the RS frame encoder 132 by performing demultiplexing. That is, the data other than the MPEG header can be output to the RS frame encoder 132 without performing rendering. The data renderer 131 may or may not render the signaling data included in the mobile data packet.

The RS encoder 132 performs RS encoding on the data to be rendered or bypassed by the data renderer 131, adds 20 bytes of RS parity, and outputs the RS parity to the data interleaver 133.

The data interleaver 133 receives the data output from the RS frame encoder 132 and can interleave the data by convoluting the data in units of bytes.

The output of the data interleaver 133 is input to the non-systematic RS encoder 134 and the parity substitution unit 135.

The initialization of the memory in the trellis encoder 136 is performed in order to convert the output data of the trellis encoder 136 located at the rear end of the parity substitution unit 135 into known data defined by the appointment at the transmitting / need.

The initialization data is determined based on the memory state of the trellis encoder 136 and is generated. The initialization data thus generated is input to the trellis encoder 136 instead of the TCM initialization position holder.

Therefore, it is necessary to recalculate the RS parity due to the effect of the replacement initialization data and replace it with the RS parity output from the data interleaver 133.

The non-systematic RS encoder 134 receives the mobile data packet including the TCM initialization position holder to be replaced with the initialization data from the data interleaver 133, and receives the initialization data from the trellis encoder 136. The TCM initial position holder among the mobile data packets is replaced with the initialization data, and unstructured RS coding is performed on the mobile data packet. The mobile data packet is output to the parity substitute 135.

The parity substitution unit 135 selects the output of the data interleaver 133 if the data output from the data interleaver 133 is data in the main data packet or data in the mobile data packet not including the TCM initialization position holder to be replaced Systematic RS encoder 134 and outputs the selected data to the trellis encoder 136 if the data is data in the mobile data packet including the TCM initialization position holder.

The trellis encoder 136 includes twelve trellis encoders. The trellis encoder 136 performs 12-way interleaving on the byte units of data output from the parity substitution unit 135 on a symbol basis, performs trellis encoding on the data, .

The sync mux 140 inserts field sync and segment sync into the data output from the trellis encoder 136 and outputs the data.

The pilot inserter 150 inserts the pilot signal into the data output from the sync mux 140.

The modulator 160 may modulate the data output from the pilot inserter 150 in VSB manner.

The transmitter 170 then transmits the modulated signal from the modulator 160 to the receiver.

2 is a diagram illustrating an M / H frame structure according to an embodiment of the present invention.

The mobile data of the present invention is multiplexed with main data in units of M / H frames, modulated by the VSB method, and transmitted to the receiving system.

At this time, one M / H frame includes K1 subframes, and one subframe may include K2 slots. Also, one slot may contain K3 data packets. In the present invention, K1 is set to 5, K2 is set to 16, and K3 is set to 156, as an embodiment. The values of K1, K2 and K3 proposed in the present invention can be changed according to the designer's intention.

 As shown in FIG. 2, one M / H frame includes 5 subframes, and one subframe includes 16 slots. In this case, one M / H frame includes 5 subframes and 80 slots.

And one slot may contain 156 data packets (i.e., transport stream packets) at the packet level and 156 data segments at the symbol level. Or a half of the VSB field. That is, since one data packet of 207 bytes has the same amount of data as one data segment, a data packet before data interleaving can be used as a concept of a data segment. At this time, one VSB field is equal to the size of two slots, and two VSB fields are gathered to form one VSB frame, so that one VSB frame is equal to the size of four slots.

In addition, FIG. 2 shows an allocation procedure of mobile data groups allocated to one subframe among five subframes constituting an M / H frame. The method of allocating mobile data groups may be applied equally to all M / H frames or may be different for each M / H frame. The same applies to all subframes within one M / H frame, or may be applied to each subframe differently. At this time, assuming that the allocation of the data group is applied to all the subframes in the M / H frame, the number of data groups allocated to one M / H frame is a multiple of 5.

And allocating consecutive multiple data groups as far apart as possible in a subframe. This makes it possible to strongly respond to burst errors that may occur in one subframe.

For example, assuming that three groups are allocated to one subframe, the first slot (Slot # 0), the fifth slot (Slot # 4) and the ninth slot (Slot # 8) do. FIG. 2 shows an example in which 16 data groups are allocated to one subframe by applying the allocation rule. In this example, 0, 8, 4, 12, 1, 9, 5, 13, 2, 14, 3, 11, 7, and 15, respectively.

Equation (1) is a mathematical expression of rules for assigning data groups to one subframe as described above.

Where O = 0 if i < 4,

O = 2 else if i <8,

O = 1 else if i <12,

O = 3 else.

Here, j is a slot number in one subframe and may have a value between 0 and 15. The i is a group number and may have a value between 0 and 15.

In the present invention, a collection of data groups having the same FEC variable included in one M / H frame is called a parade. This will be described later.

Figure 3 is an embodiment of a stereoscopic image multiplexing format of various image formats for implementing 3D broadcasting.

The image format of the 3D broadcasting service includes a side-by-side format of (a), a top-bottom format of (b), an interlaced format of (c) A checker board format of (e), an anaglyph format of (f), and the like.

(a), the left and right images are respectively down-sampled by 1/2 in the horizontal direction, one sampled image is sampled on the left side, and the remaining sampled video is located on the right side, and one stereo-scopic It is the format that composes the image. (b), the left image and the right image are respectively down-sampled by 1/2 in the vertical direction, one sampled image is sampled and the other sampled image is located at the bottom, and one stereo-scopic image . In the interlaced method of (c), the left image and the right image are respectively down-sampled by 1/2 in the horizontal direction so as to cross each line, and the two images are configured as one image, or the left image and the right image are respectively vertically And the two images are formed into one image. The frame sequential scheme of (d) is a format in which a left video and a right video are temporally crossed in one video stream. The checkerboard format of (e) is a format in which two images are formed as one image by downsampling the left and right images so that they cross each other in the vertical and horizontal directions. The anaglyph format of (f) is a format for composing an image to produce stereoscopic effect using complementary color contrast.

In the present invention, either the left image or the right image in the stereoscopic image is referred to as basic video data that can be received by the 2D receiver, and the remaining image is referred to as additional video data for 3D broadcasting. This can be changed according to the designer's intention.

4 is a diagram illustrating an embodiment in which a single parade according to the present invention is assigned to a slot in an M / H frame.

As with the assignment of the data groups of FIG. 2, it is also an embodiment that the parades are allocated as far apart as possible within the subframe. This makes it possible to strongly respond to burst errors that may occur in one subframe.

The parade allocation method can be applied differently for each M / H frame based on the M / H frame, and can be applied equally to all M / H frames. The same applies to all subframes within one M / H frame, or may be applied to each subframe differently. The present invention is applicable to all subframes within one M / H frame, which may be different for each M / H frame. That is, the M / H frame structure may vary in M / H frame units

Fig. 4 shows an example of a parade in which three data groups are allocated in one subframe.

When three data groups are sequentially allocated in one subframe in a 4-slot period and this process is performed for five subframes in the corresponding M / H frame, 15 data groups are stored in one M / H frame . Here, the 15 data groups are mobile data groups included in one parade. Therefore, one subframe includes 16 slots and four slots are equal to one VSB frame, so that one subframe may include four VSB frames.

Also, when data groups for one parade are allocated, main service data may be allocated between data groups and data groups of other parades may be allocated. That is, data groups for a plurality of parades may be allocated to one M / H frame.

Basically, the allocation of data groups to multiple parades is not different from that of a single parade. In other words, data groups in other parades allocated to one M / H frame are also allocated in 4-slot periods.

At this time, the data group of another parade may be allocated in a circular manner from a slot to which the data group of the previous parade is not allocated.

For example, assuming that the allocation of data groups for one parade is made as shown in FIG. 4, the data group for the next parade is allocated from the 12th slot in one subframe. This is an example, and for another example, the data group of the next parade may be sequentially allocated in another slot in one subframe, for example, from the third slot to the fourth slot period. This can be changed according to the designer's intention.

FIG. 5 shows an embodiment for transmitting a plurality of parides to one M / H frame according to the present invention. Particularly, FIG. 5 shows an example of parade transmission of one subframe among five subframes constituting an M / H frame.

Assuming that the first parade # 0 includes three data groups per subframe, the positions of the groups in the subframe can be obtained by substituting 0 to 2 for the i value of Equation (1). That is, the data groups of the first parade are sequentially allocated to the first, fifth, and ninth slots (Slot # 0, Slot # 4, Slot # 8) in the subframe.

Assuming that the second parade # 1 includes two data groups per subframe, the positions of the groups in the subframe can be obtained by substituting 3 to 4 in the i value of Equation (1). That is, the data groups of the second parade are sequentially allocated to the second and twelfth slots (Slot # 1, Slot # 11) in the subframe.

If the third parade # 2 includes two groups per subframe, the positions of the groups in the subframe can be obtained by substituting 5 to 6 for the i value of the above equation (1). That is, the data groups of the third parade are sequentially allocated to the seventh and eleventh slots (Slot # 6, Slot # 10) in the subframe.

In this manner, data groups for a plurality of parades can be allocated to one M / H frame, and the allocation of data groups in one subframe is performed in serial from left to right with a group space of 4 slots.

Therefore, the number of groups of one parade per sub-frame (NOG) that can be assigned to one subframe can be any one of integers from 1 to 8. Since one M / H frame includes five subframes, the number of data groups of one parade that can be allocated to one M / H frame is any one of multiples of 5 from 5 to 40 .

FIG. 6 shows an embodiment in which the process of allocating a plurality of parades in FIG. 5 is extended to five subframes in one M / H frame. And data groups belonging to the same parade are allocated sequentially in a 4-slot period within each subframe.

As described above, the M / H frame is divided into five subframes, and data groups corresponding to several parades are present in each subframe. Data groups corresponding to each parade are bundled in M / H frame units and included in one parade.

7 is a block diagram showing the structure of a signaling encoder 113 according to the present invention.

The signaling encoder 113 includes a TPC encoder 700, an RS encoder for FIC 701, a block interleaver 702, a multiplexer 703, a signaling A signaling randomizer 704 and a parallel concatenated convolutional code-PCCC encoder 705. [

The signaling information can be divided into two types of signaling channels. One is Transmission Parameter Channel (TPC) data, and the other is Fast Information Channel (FIC) data.

The TPC data is signaling information including transmission parameters such as RS frame information, RS coding information, FIC information, data group information, SCCC information, M / H frame information, and the like. Also, the TPC data may include information on FEC parameters. The TPC data is merely an embodiment for facilitating understanding of the present invention. Addition and deletion of signaling information included in the TPC can be easily changed by those skilled in the art, so the present invention is not limited to the above embodiments. At this time, the TPC data mainly includes parameters used in a physical layer module and is transmitted without being interleaved, so that the receiving system can access the TPC data by slot.

The FIC data transmitted through the FIC is provided to enable fast service acquisition at the receiver and includes cross layer information between the physical layer and the upper layer.

The RS encoder for TPC 700 receives 10 bytes of TPC data and performs (18, 10) -RS encoding to add 8 bytes of RS parity data to 10 bytes of TPC data. The RS-encoded 18-byte TPC data is output to a multiplexer 564. [

The RS encoder for FIC 701 receives 37 bytes of FIC data and performs (51, 37) -RS encoding to add 14 bytes of RS parity data to 37 bytes of FIC data. The RS-encoded 51-byte FIC data is input to a block interleaver 702 and interleaved on a predetermined block basis. For example, the block interleaver 702 is a variable-length block interleaver and interleaves FIC data in each subframe RS-coded and inputted, in units of TNoG (column) x 51 (row) blocks, and outputs the interleaved data to the multiplexer 704 . Here, the TNoG is the total number of data groups allocated to one subframe. The block interleaver 702 is synchronized with the first FIC data of each subframe.

The block interleaver 702 writes the 51-byte RS code word in left-to-right, top-down, row-by-row, column-by-column, top-down, left-to-right, and 51-byte units.

A multiplexer (Mux) 704 multiplexes RS-encoded TPC data in the TPC encoder 200 and FIC data interleaved in the block interleaver 702 on the time axis, and multiplexes the multiplexed 69-byte data into a signaling randomizer and outputs it to the randomizer (704).

The signaling renderer 704 randomizes the multiplexed data and outputs it to a convolutional encoder 705. The convolutional encoder 705 can encode the rendered data, that is, the signaling information data, according to the PCCC scheme.

For example, if the convolutional encoder 705 performs coding at a 1/4-code rate, 69 bytes input to the convolutional encoder 705 are expanded to 276 bytes by 1/4 PCCC coding and output. 276 bytes output from the convolutional encoder 705 may be output to the group formatter 114 and inserted into the signaling information area of the corresponding data group.

Figure 8 is an embodiment of a table including TPC data according to the present invention.

The TPC data includes at least one of a Sub-Frame number field, a Slot_number field, a Parade_id field, a starting_Group_number field, a number_of_Group field, a Parade_repetition_cycle field, an RS_Frame_mode field, an RS_code_mode_primary field, an RS_code_mode_secondary field, an SC_CC_Block_mode field, an SCCC_outer_code_mode_A field, A SCCC_outer_code_mode_C field, an SCCC_outer_code_mode_D field, a FIC_version field, a Parade_continuity_counter field, a TNoG field, a scalable mode field, and a tpc_protocol_version field.

The Sub-frame_number field indicates the number of current subframes in the M / H frame, and is transmitted for M / H frame synchronization. The Sub-frame_number field value may have a value between 0 and 4.

The Slot_number field indicates the number of current slots in the corresponding subframe and is transmitted for M / H frame synchronization. The Slot_number field value may have a value between 0 and 15.

The Parade_id field indicates an identifier for identifying a parade to which the corresponding mobile data group belongs.

The SGN field indicates the first slot number for the parade to which the group belongs.

The NoG field indicates the number of groups assigned to the parade to which the group belongs. The NoG field value may have a value between 0 and 7. The slot numbers assigned to the corresponding parade can be calculated from SGN and NoG using Equation (1).

The PRC field indicates the repetition period of the parade transmitted in units of M / H frames.

The RS_Frame_mode field is generated by distinguishing mobile data having a different FEC code rate into a primary RS frame and a secondary RS frame when generating an RS frame by performing RS-CRC encoding on mobile data in the RS frame encoder 111 .

The RS_code_mode_primary field indicates an RS code mode for the primary RS frame.

The RS_code_mode_secondary field indicates an RS code mode for the secondary RS frame.

The SCCC_Block_mode field indicates how the SCCC blocks are allocated to the mobile data block in the block processor 112.

The SCCC_outer_code_mode_A field indicates an SCCC outer code mode for a specific area A when the mobile data group is divided into a plurality of areas.

The SCCC_outer_code_mode_B field indicates an SCCC outer code mode for a specific area B when the mobile data group is divided into a plurality of areas.

The SCCC_outer_code_mode_C field indicates the SCCC outer code mode for the specific region C when dividing the mobile data group into a plurality of regions.

The SCCC_outer_code_mode_D field indicates the SCCC outer code mode for the specific area D when dividing the mobile data group into a plurality of areas.

The FIC_version field indicates the version of the FIC data.

The Parade_continuity_counter field is incremented from 0 to 15, and increases by 1 for each (PRC + 1) M / H frame. For example, if PRC = 011, the Parade_continuity_counter field is incremented every fourth M / H frame.

The TNoG field indicates the total number of groups allocated in one subframe.

The tpc_protocol_version field indicates a version of the structure of the TPC data table and has a 5-bit value. The 2 most significant bits (MSBs) are used for major version changes, which are incompatible with ATSC-M / H, and the 3 most significant bits (LSBs) It is used for minor version changes that are compatible with. In the present invention, the TPC protocol minor version change method is used because it must be compatible with the existing ATSC-M / H. The value of this field can be changed according to the designer's intention.

FIG. 9 illustrates an embodiment in which mobile data groups including basic video data and additional video data for a 3D broadcast program according to the present invention are transmitted through different parades. In this case, different parades can be allocated in a 2-slot period among a plurality of slots included in one subframe, which can be changed according to the designer's intention.

FIG. 10 shows an embodiment in which transmission information according to FIG. 9 is shown in a table including TPC data.

In the present invention, 11100 is displayed for tpc_protocol_version. However, it is possible to select a value other than 111 which is the default value of the LSB 3-bit, which can be changed according to the designer's intention. FIG. 10 shows an example in which additional TPC data for 3D is shown using a reserved 16 bits region 1000 included in a table including TPC data of FIG. The added field basically includes information about the current frame when the sub-frame_number is equal to or smaller than 1, and information about the next frame when the sub-frame_number is equal to or greater than 2. This can be changed according to the designer's intention.

As shown in FIG. 10, the TPC data may include a 3d_enable field, a 3d_mode field, a 3d_parade_mode field, a 3d_connected_parade_id field, and the like. Current_ / next_ of the field name indicates information of each field, whether it is for a current subframe or for a next subframe. If the number of the subframe is less than or equal to 1, it represents a field for the parade included in the current subframe. If the number of the subframe is greater than or equal to 2, a field for the parade included in the next subframe have.

The 3d_enable field indicates whether the current or next parade contains additional video data for 3D broadcasting. In the present invention, allocating one bit is an embodiment, but more bits can be used according to the designer's intention.

The 3d_mode field is a variable that indicates whether a plurality of 3D broadcasting technologies are used. The designer can determine the number of allocated bits according to the type of technology provided by the standard. Accordingly, the number of reserved bits is determined.

The 3d_parade_mode field indicates whether the current or next parade is a parade including basic video data or a parade including additional video data for 3D. For example, if the field value is '1', it is a parade including basic video data. If the field value is '0', it is defined as a parade including additional video data. According to this information, the receiver can distinguish RS decryption and can distinguish and transmit each signal.

The 3d_connected_parade_id field is a field indicating a parade including video data paired for 3D broadcasting. If the current parade or the next parade includes basic video data, the 3d_connected_parade_id field is an id value of a parade including additional video data. If the parade has additional information for 3D, it becomes the parade's id value including the basic video data. This shows the pairs of parades for 3D broadcast programs.

11 is an embodiment in which mobile data groups including basic video data and additional video data for a 3D broadcasting program according to the present invention are transmitted through the same parade.

As shown in Fig. 11, the parade number in this case is equal to # 0, and the parade of # 0 may include mobile data groups including basic video data and mobile data groups including additional video data for 3D broadcasting have. The number of mobile data groups comprising additional video data may differ from the number of mobile data groups comprising basic video data and the order of allocation of mobile data groups in the parade may be sequential or nonsequential depending on the designer's intention .

FIG. 12 shows an embodiment in which the transmission information according to FIG. 11 is shown in a table including TPC data.

tpc_protocol_version uses the same minor protocol change method as in FIG. FIG. 12 shows an example in which additional TPC data for 3D is shown using a reserved 16 bits area 1200 included in a table including TPC data in FIG. The TPC data shown in Fig. 12 may include a 3d_enable field, a 3d_mode field, a 3d_ext_nog_minus_1 field, and a 3d_rs_mode field. Current_ / next_ of the field name indicates information of each field, whether it is for a current subframe or for a next subframe. If the number of the subframe is less than or equal to 1, the field for the parade included in the current subframe is represented. If the number of the subframe is greater than or equal to 2, the field for the parade included in the next subframe is displayed .

The 3d_enable field indicates whether the current or next parade contains additional video data for 3D broadcasting. In the present invention, allocating one bit is an embodiment, but more bits can be used according to the designer's intention.

The 3d_mode field is a variable that indicates whether a plurality of 3D broadcasting technologies are used. The designer can determine the number of allocated bits according to the type of technology provided by the standard. Accordingly, the number of reserved bits is determined.

The 3d_ext_nog_minus_1 field indicates the number of mobile data groups containing additional video data for 3D broadcasting. Since the maximum number of mobile data groups that a parade can have in the ATSC-M / H standard is limited to 8, the number of mobile data groups including basic video data is limited to 8 as in the conventional method, The maximum number of groups of mobile data groups that contain additional video data for &lt; RTI ID = 0.0 &gt; In this case, the maximum number of mobile data groups included in the parade may be 16. It is also possible to limit the sum of the number of mobile data groups including basic video data and the number of mobile data groups including additional video data for 3D broadcasting to 8. This can be changed according to the designer's intention.

The 3d_rs_mode field is a structure of the RS frame generated by the RS frame encoder 111 included in the current or next subframe. It is assumed that the mobile data including the basic video data and the additional video data for the 3D broadcasting are converted into one RS frame And transmits the mobile data including the basic video data and the additional video data for 3D broadcasting to the respective RS frames in separate RS frames, and transmits the separate RS And information on whether to process each of the frames. It is necessary in a transmission system that uses both methods for RS frames, which can be changed according to the designer's intention. The receiver can receive basic video data and additional video data for 3D broadcasting using TPC data information of the parade.

In the present invention, the current number_of_groups_minus_1 field and the next_number_of_groups_minus_1 field included in the existing TPC data are used as follows.

If the current number_of_groups_minus_1 field and the next_number_of_groups_minus_1 field indicate the number of mobile data groups including basic video data, the total number of mobile data groups included in the current or next parade is the sum of the current_number_of_groups_minus_1 field and the current_3d_ext_nog_minus_1 field, May be the sum of the fields next_number_of_groups_minus_1 and next_3d_ext_nog_minus_1.

If the current number_of_groups_minus_1 field and the next_number_of_groups_minus_1 field indicate the total number of mobile data groups included in the whole or next parade, the total number of groups is limited to 8. The number of mobile data groups including the basic video data is May be a value obtained by subtracting the current_3d_ext_nog_minus_1 field and the next_3d_ext_nog_minus_1 field in the current number_of_groups_minus_1 field and the next_number_of_group_minus_1 field, respectively.

FIG. 13 illustrates an embodiment in which, when a receiver requests additional video data for a 3D broadcast signal, the transmitter transmits mobile data groups including additional video data. When the receiver requests the 3D broadcasting signal to the transmitter, the transmitter transmits the additional left screen or the right screen for realizing the 3D broadcasting and the transmission information for transmitting the 3D broadcasting signal through independent parades, Data groups can be extended and transmitted.

Referring to FIG. 13, mobile data groups having different FEC coding parameters are transmitted through parade # 0 and parade # 1, respectively. In this case, when a signal for requesting transmission of additional video data for viewing only a broadcast program corresponding to parade # 0 in 3D broadcast is input from the receiver, additional video data for 3D broadcast for parade # Mobile data groups can be transmitted via parade # 2. In this case, the number of the parade can be arbitrarily designated, and information on whether the parade # 0 and the parade # 2 are paired can be transmitted using the 3d_connected_parade_id field included in the TPC data as shown in FIG.

14 is another embodiment of transmitting mobile data groups including additional video data at the transmitting side when the receiving side requests additional video data for the 3D broadcasting signal at the receiving side.

Referring to FIG. 14, mobile data groups having different FEC coding parameters are transmitted through parade # 0 and parade # 1, respectively, and basic video data are included from 4th to 8th in the mobile data group of parade # 1 Respectively. In this case, when a signal requesting transmission of additional video data for viewing only the broadcast program corresponding to parade # 1 in 3D broadcasting is input from the receiving side, the transmitter transmits the mobile data groups 9 to 11 of parade # Including additional video data for 3D broadcasting.

15 is a diagram illustrating an embodiment of a method for transmitting a 3D broadcasting request signal from a receiving side to a transmitting side and receiving the 3D broadcasting request signal.

In the present invention, a case of transmitting a 3D broadcasting request signal from a portable telephone is an embodiment, which can be changed according to the designer's intention. The user can transmit a 3D broadcast request signal to the cellular phone base station 1502 with respect to a broadcast program of a specific channel through the cellular phone 1501. [ The cellular phone base station 1502 transmits the 3D broadcast request signal to the broadcasting signal transmitting side 1504 through the cellular phone network 1503. The broadcast signal transmitting side 1504 adds the mobile data group including the additional video data for 3D broadcasting of the broadcast program of the specific channel to the broadcast channel and transmits the mobile data group through the broadcast signal antenna 1505, To the cellular phone 1501 of the user.

16 is a diagram illustrating another embodiment of a method of transmitting a 3D broadcasting request signal from a receiving side to a transmitting side and receiving the 3D broadcasting request signal.

16 shows a case in which additional video data for 3D broadcasting is transmitted from a transmitting side to a receiving side through a cellular phone network or a wireless Internet network instead of a broadcasting channel. In the present invention, a 3D broadcasting request signal is transmitted in a portable telephone as an embodiment, but this can be changed according to the designer's intention. The user can transmit a 3D broadcast request signal to the cellular phone base station 1602 through the cellular phone 1601 for a broadcast program of a specific channel. The mobile phone base station 1602 can transmit the 3D broadcast request signal to the broadcast signal transmitting side 1604 through the mobile phone network or the wireless Internet network 1603. [ The broadcasting signal transmitting side 1604 adds a mobile data group including additional video data for 3D broadcasting of the broadcasting program of the specific channel to the mobile phone network or the wireless Internet network 1603 and transmits 13 or the method shown in Fig.

FIG. 17 is a block diagram of a receiving system according to an embodiment of the present invention.

The receiving system of FIG. 17 includes an antenna 1700, a channel synchronizer 1701, a channel equalizer 1702, a channel decoder 1703, an RS frame decoder An RS frame decoder 1704, an M / H TP interface block 1705, a signaling decoder 1706, an operation controller 1707, an FIC processor (FIC an FIC-Chunk Processor 1708, a Common IP Protocol Stack 1709, an Interaction Channel 1710, an A / V Processor 1711, A Service Signaling Channel (SCC) Processing Buffer & Parser 1712, a Service Map DB 1713, a Service Guide-SG-Processor 1714, And a second storage unit (SG DB) 1715. The image receiving system may further include a Rich Media Environment Processor (RME) processor 1716, a Service Protection Processor 1717, and a Non-Real Time Processor 1718. The receiving system may further include a main service data processing unit. In this case, the main service data processing unit may include a data deinterleaver, an RS decoder, and a data derandomizer.

The first storage unit 1713 is a service map database and the second storage unit 1715 is a service guide database DB.

The channel synchronization unit 1701 includes a tuner and a demodulator. The tuner tunes the frequency of a specific channel through an antenna 1700, downconverts it to an intermediate frequency (IF) signal, and outputs it to a demodulator. The signal output from the tuner is a passband digital IF signal.

The demodulator in the channel synchronization unit 1701 converts the input passband digital signal into a baseband digital signal by carrying out carrier recovery and timing recovery using the known data sequence included in the data group in the transmission system .

The channel equalizer 1702 receives the known data sequence, for example, the first, third, and the sixth known data streams, to cause a multi-path, a Doppler effect, Thereby compensating for distortion of the signal. At this time, the channel equalizer 1702 can feed back the output of the channel decoder 1703 and improve the equalization performance.

The signaling decoder 1706 extracts and decodes the signaling data (e.g., TPC data and FIC data) from the received signal. The decoded TPC data is output to the operation controller 1707, and the decoded FIC data is output to the FIC processor 1708. In one embodiment, the signaling decoder 1706 performs signaling decoding in the reverse of the signaling encoder to extract TPC data and FIC data from the received signal. For example, the signaling decoder 1706 performs the recursive turbo decoding of the parallel concatenated convolutional code (PCCC) scheme on the data of the signaling information area among the input data, and performs derandering on the turbo decoded signaling data And then separates the FIC data and the TPC data from the derandomized signaling data. Further, the signaling decoder 1706 performs RS decoding on the separated TPC data in the reverse order of the transmitting side and outputs it to the operation controller 1707.

8, the TPC data includes a Sub-Frame number field, a Slot_number field, a Parade_id field, a starting_Group_number field, a number_of_Group field, a Parade_repetition_cycle field, an RS_Frame_mode field, an RS_code_mode_primary field, an RS_code_mode_secondary field, an SC_Block_mode Field, an SCCC_outer_code_mode_A field, an SCCC_outer_code_mode_B field, an SCCC_outer_code_mode_C field, an SCCC_outer_code_mode_D field, a FIC_version field, a Parade_continuity_counter field, a TNoG field, a scalable mode field, and a tpc_protocol_version field. The transmission information for 3D broadcasting may include a 3d_enable field, a 3d_mode field, a 3d_parade_mode field, a 3d_connected_parade_id field, and a 3d_ext_nog_minus_1 field and a 3d_rs_mode field shown in FIG. 12, as shown in FIG.

Then, the signaling decoder 1706 deinterleaves the separated FIC data in units of subframes, performs RS decoding inverse to the transmitting side, and outputs the decoded FIC data to the FIC processor 1708. The transmission unit of the FIC data deinterleaved and RS-decoded in the signaling decoder 1306 and output to the FIC processor 1708 is an FIC segment.

The channel decoder 1703, also referred to as a block decoder, performs forward error correction (FEC) to recover meaningful data from the received signal. For this, the channel decoder 1703 may use the SCCC-related information among the signaling data. In an embodiment, the channel decoder 1703 receives channel-equalized data input from the channel equalizer 1702 and performs data transmission on the transmission side by performing both serial and concatenated convolutional code (SCCC) block coding and trellis coding, That is, if data or signaling data in an RS frame is subjected to trellis decoding and block decoding inversely to the transmitting side, only trellis decoding can be performed if the data is subjected to only trellis coding without performing block coding .

The RS frame decoder 1704 performs RS-CRC decoding on the received data to recover the RS frame. That is, forward error correction (FEC) is performed to recover the RS frame. For this, the RS frame decoder 1704 may use RS related information among the signaling data, in particular, the 3d_rs_mode field.

The M / H TP interface unit 1705 extracts M / H TP packets from the RS frame, restores the IP datagram, and outputs the extracted IP datagram to the common IP protocol stack 1709. Where the M / H TP packets encapsulate the IP datagram. That is, the header of each M / H TP packet is analyzed and the IP datagram is restored from the payload of the corresponding M / H TP packet.

An operation controller 1707 controls the operation of various baseband processes using the decoded TPC data structure. That is, the operation controller 1707 receives the TPC data and delivers the M / H frame time information, the presence / absence of the selected parade data group, the location information of the known data in the data group, and the power control information to each necessary block.

The FIC processor 1708 collects the input FIC segments and stores the FIC chunks in the first storage unit 1713 after restoring the FIC chunks. The FIC chunk includes an ensemble selection process and signaling information required for a mobile service scan process.

The service signaling channel processor 1712 extracts the service signaling channel table sections from the designated IP multicast stream and stores them in the first storage unit 1713. The service signaling channel includes IP level signaling information required for M / H service selection and scanning. The service signaling channel according to the present invention transmits at least one of SMT, GAT, RRT, CIT and SLT. At this time, the connection information of the IP datagram transmitting the service signaling channel is a well-known destination IP address and a well-known destination UDP port number. Accordingly, the service signaling channel processor 1712 extracts an IP stream that transmits the service signaling channel, that is, service signaling data, having a well-known destination IP address and a well-known destination UDP port number. At least one of SMT, GAT, RRT, CIT and SLT is restored from the extracted service signaling data and stored in the first storage unit 1713. For example, the first storage unit 1713 may store a service map configured from signaling information collected by the FIC processor 1708 and the service signaling channel processor 1712.

The A / V processor 1711 separates the video data and the audio data from the IP datagram input through the common IP protocol stack 1709, decodes them into respective decoding algorithms, and displays them on the screen. For example, the audio decoding algorithm may be an AC-3 decoding algorithm, an MPEG 2 audio decoding algorithm, an MPEG 4 audio decoding algorithm, an AAC decoding algorithm, an AAC + decoding algorithm, a HE AAC decoding algorithm, an AAC SBR decoding algorithm, Algorithm, and at least one of the MPEG 2 video decoding algorithm, the MPEG 4 video decoding algorithm, the H.264 decoding algorithm, the SVC decoding algorithm, and the VC-1 decoding algorithm can be applied as the video decoding algorithm.

The SG processor 1714 restores the announcement data, stores the announcement data in the second storage unit 1715, and provides the service guide to the viewer.

The interaction (or return) channel portion 1710 provides the uplink from the receiving system via the common IP protocol stack 1709. At this time, the interaction channel should be IP-compatible.

The RME processor 1716 receives the RME data transmitted through the M / H broadcast or the interaction channel through the common IP protocol stack 1709, and restores and processes the RME data.

The SP processor 1717 restores and processes the service protection related data received through the common IP protocol stack 1709. And provides protection to the M / H service according to the subscription status of the viewer.

The NRT processor 1718 restores and processes non-real-time data such as file applications.

18 is a block diagram illustrating an embodiment of a signaling decoder 1706 according to the present invention.

The signaling decoder 1706 performs iterative turbo decoding and RS decoding on the data in the signaling information area of the equalized data. The resultant TPC data is output to the operation controller 1707, and the FIC data can be output to the upper layer.

To this end, the signaling decoder 1706 includes a recursive turbo decoder 1811, a derandomizer 1812, a demultiplexer 1813, an RS decoder for TPC 1814, , A block deinterleaver 1815, and an FIC decoder (FIC decoder)

The de-randomizer 1812 performs de-interleaved turbo decoding and derandomizes the input data and outputs the data to the demultiplexer 1813. The demultiplexer 1813 demultiplexes 18-byte TPC data and 51 Identifies the FIC data of the byte.

The TPC data is output to the TPC decoder 1814 corresponding to the RSs 18 and 10 of the GF 256. The TPC decoder 1814 receives the hard decision value from the recursive turbo decoder 1811 and performs general RS decoding. Alternatively, the TPC decoder 1814 may receive the soft decision value and perform the erasure decoding. The TPC data error-corrected in the TPC decoder 1814, that is, transmission parameter information is output to the operation controller 1707. At this time, the TPC decoder 1814 may transmit the determination result to the operation controller 1707 to prevent an operation error that may occur due to a wrong transmission parameter.

Also, since the partial information of the TPC data is repeatedly transmitted to each mobile data group, decoding performance can be improved by using this feature. For example, in the case of FEC mode information such as SCCC or RS, information on the next M / H frame is transmitted repeatedly in three subframes in one M / H frame, so that only once in three subframes If decoding is successful, there is no problem in receiving the next M / H frame.

The FIC data separated in the demultiplexer 1813 is output to the (TNoG x 51) block deinterleaver 1815. The block deinterleaver 1815 is the inverse of the (TNoG x 51) block interleaver of the signaling encoder of the transmitting side.

For example, the (TNoG x 51) block interleaver on the transmitting side is a variable-length block interleaver, and can interleave FIC data in each subframe in units of TNoG (column) x 51 (row) blocks. Here, the TNoG is the total number of data groups allocated to one subframe in one M / H frame.

The FIC data de-interleaved in the block deinterleaver 1815 is input to the FIC decoder 1816 corresponding to the RSs 51 and 37 of the GF 256. [ Like the TPC decoder 1814, both the hard decision value and the soft decision value can be used, and the error corrected FIC data in the FIC decoder 1816 is output to the FIC processor 1708.

Meanwhile, the TNoG value required in the block deinterleaver 1815 can be obtained from the TPC data output from the TPC decoder 1814, and can be performed in the signaling decoder 1706 or in the operation controller 1707. The block deinterleaver 1815 may include a controller for this case if it is performed in the block deinterleaver 1815.

FIG. 19 is a flowchart illustrating an embodiment of a 3D broadcasting transmission method according to the present invention.

The RS frame encoder 111 encodes the mobile data including the basic video data for the 3D broadcasting program and the additional video data according to the FEC coding variable (S1900).

In operation S1910, the signaling encoder 113 encodes signaling information including TPC data and FIC data including transmission information of the basic video data and the additional video data.

The group formatter 114 forms a plurality of mobile data groups including the encoded mobile data and the encoded signaling information according to FEC coding parameters (S1920).

The transmitting unit 170 transmits a plurality of sets of mobile data groups through a plurality of slots included in the transmission frame (S1930).

20 is a flowchart illustrating an embodiment of a 3D broadcasting receiving method according to the present invention.

An antenna 1700 receives a plurality of sets of mobile data groups including basic video data and additional video data for a 3D broadcasting program through a plurality of slots included in a transmission frame (S2000).

The signaling decoder 1706 decodes the TPC data included in the received set of the plurality of mobile data groups (S2010).

The RS frame decoder 1704 decodes the FEC frame (or the error correction decoding frame), which is a collection of a plurality of mobile data groups included in a plurality of sets of mobile data groups, using the decoded TPC data (S2020).

The A / V processor 1711 decodes and displays the video data and the audio data included in the decoded frame, respectively (S2030).

Claims (20)

Encoding service data including basic video data and additional video data for a 3D broadcast program according to a Forward Error Correction (FEC) coding parameter;
Encoding the signaling information including the basic video data and the transmission information for the additional video data;
Allocating the encoded service data and the encoded signaling information to a signal frame according to the FEC coding parameter; And
And transmitting the signal frame. The method according to claim 1,
Wherein the signal frame comprises first service data encoded according to a first FEC coding variable and second service data encoded according to a second FEC coding variable. 3. The method of claim 2,
Wherein the first service data comprises the base video data and the second service data comprises the additional video data. The method of claim 3,
Wherein the signaling information comprises:
3D broadcasting information indicating whether 3D broadcasting is available, first information indicating whether the service data is the first service data or the second service data, and a service providing a pair with service data indicated by the first information And second information indicating data. 3. The method of claim 2,
Wherein if the first FEC coding variable and the second FEC coding variable are the same, the basic video data and the additional video data are transmitted through independent regions of the signal frame. 6. The method of claim 5,
Wherein the signaling information comprises:
And 3D broadcast information indicating whether 3D broadcast is possible. A first encoder for encoding service data including basic video data and additional video data for a 3D broadcast program according to a Forward Error Correction (FEC) coding parameter;
A second encoder for encoding signaling information including transmission information for the basic video data and the additional video data;
And a transmitter for assigning the encoded service data and the encoded signaling information to a signal frame according to the FEC coding variable and for transmitting the signal frame. 8. The method of claim 7,
Wherein the signal frame comprises first service data encoded according to a first FEC coding variable and second service data encoded according to a second FEC coding variable. 9. The method of claim 8,
Wherein the first service data comprises the basic video data and the second service data comprises the additional video data. 10. The method of claim 9,
Wherein the signaling information comprises:
3D broadcasting information indicating whether 3D broadcasting is available, first information indicating whether the service data is the first service data or the second service data, and a service providing a pair with service data indicated by the first information And second information for indicating data. 9. The method of claim 8,
Wherein the basic video data and the additional video data are transmitted through independent regions of the signal frame if the first FEC coding variable and the second FEC coding variable are equal. 12. The method of claim 11,
Wherein the signaling information comprises:
And 3D broadcast information indicating whether 3D broadcast is possible. Receiving at least one signal frame including service data for a 3D broadcast program;
Decoding the signaling information included in the signal frame;
Decoding a Forward Error Correction (FEC) frame collected from the service data included in the signal frame using the decoded signaling information; And
And decoding and displaying the video data and the audio data included in the decoded FEC frame, respectively. 14. The method of claim 13,
Wherein the service data corresponds to any one of first service data encoded according to a first FEC coding variable and second service data encoded according to a second FEC coding variable and the first service data includes basic video data And the second service data includes additional video data. 15. The method of claim 14,
When a 3D broadcast viewing request signal is input from a user,
And receiving second service data including the additional video data. 14. The method of claim 13,
Wherein the signaling information comprises:
3D broadcasting information indicating whether 3D broadcasting is available, first information indicating whether the service data is first service data or second service data, and service data having a pair with service data indicated by the first information, And a second information indicating the second information. A receiver for receiving at least one signal frame including service data for a 3D broadcast program;
A first decoding unit decoding the signaling information included in the signal frame;
A second decoding unit that decodes an FEC frame (or an error correction decoding frame) that collects the service data included in the signal frame using the decoded signaling information; And
And a display unit for decoding and displaying the video data and the audio data included in the decoded FEC frame, respectively. 18. The method of claim 17,
Wherein the service data corresponds to any one of first service data encoded according to a first FEC coding variable and second service data encoded according to a second FEC coding variable and the first service data includes basic video data And the second service data includes additional video data. 19. The method of claim 18,
The receiver may further comprise:
When a 3D broadcast viewing request signal is input from a user,
And receiving second service data including the additional video data. 18. The method of claim 17,
Wherein the signaling information comprises:
3D broadcasting information indicating whether 3D broadcasting is available, first information indicating whether the service data is first service data or second service data, and service data having a pair with service data indicated by the first information, And the second information indicating the second information.

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