KR20140057135A - Recording medium, reproducing device for providing a service based on data of the recording medium, and method thereof - Google Patents

Abstract

A recording medium playback apparatus is disclosed. The apparatus includes a driver section for loading a recording medium, a data processing section for processing video data, and a control section for providing a service corresponding to the additional information, when the recording medium on which the HEVC encoded video data and the additional information are recorded is loaded, . Here, the service includes at least one of a trick play service, a service area expansion service, and an object adjustment service.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a recording medium playback apparatus and a service providing method for providing a service on the basis of data recorded on the recording medium. 2. Description of the Related Art [0002]

The present invention relates to a recording medium, a recording medium reproducing apparatus and a service providing method thereof, and more particularly to a recording medium on which data is recorded, a recording medium reproducing apparatus capable of providing various services based on the data, ≪ / RTI >

Due to the development of electronic technology, various types of products are being developed and distributed.

In addition, according to the needs of users for various contents, the size of content processed in the electronic device has greatly increased. Specifically, large-volume contents such as various 3D (three-dimensional) contents and UHD (Ultra High Definition) contents are also used.

Such contents can be recorded and provided on various recording media. When the recording medium is loaded, the recording medium reproducing apparatus can reproduce and output the data recorded on the recording medium. Examples of the recording medium include a Blu-ray Disc (BD), a DVD, a CD, and the like.

The user can enjoy the data recorded on the recording medium by using the recording medium reproducing apparatus. At this time, the user may want additional functions to make data use more convenient. For example, the user may want to quickly and easily search for a desired portion, or may enlarge a portion of a screen or a subtitle. Accordingly, a need has arisen for a technique for providing such various services in a recording medium playback apparatus.

It is an object of the present invention to provide a recording medium, a recording medium playback apparatus capable of providing various services using data recorded on the recording medium, and a service providing method thereof.

In order to achieve the above-mentioned object, the recording medium reproducing apparatus according to an embodiment of the present invention is characterized in that when the recording medium on which the video data encoded with the HEVC format and the additional information are mounted is loaded, A data processing unit for processing the video data, and a control unit for providing a service corresponding to the additional information. Here, the service may include at least one of a trick play service, an area of interest enlargement service, and an object adjustment service.

The recording medium may be a Blu-ray disc composed of four layers such as an index table, a movie object / a BD-J object, a play list and a clip. The additional information may be recorded in at least one of an STN_table_UHD table included in the playlist file, CPI_UHD () recorded in the clip file, and EP_map_for_UHD_trickplay.

In addition, the controller may selectively perform the trick play service, the ROI service, and the object adjustment service according to a user selection.

According to an embodiment of the present invention, there is provided a method of providing a service, the method comprising: loading the recording medium loaded with the video data encoded with the HEVC scheme and the additional information; loading the recording medium; . Here, the service may include at least one of a trick play service, an area of interest enlargement service, and an object adjustment service.

The recording medium may be a Blu-ray disc composed of four layers such as an index table, a movie object / a BD-J object, a play list, and a clip. Here, the additional information may be recorded in at least one of an STN_table_UHD table included in the playlist file, CPI_UHD () recorded in the clip file, and EP_map_for_UHD_trickplay.

The method may further include detecting, from the recording medium, additional information corresponding to the selected service when one of the trick play service, the ROI service, and the object adjustment service is selected according to a user selection.

According to various embodiments of the present invention, data for providing various services is recorded on a recording medium according to a predetermined structure, and the recording medium reproducing apparatus can provide various services by using it.

1 is a block diagram showing the configuration of a recording medium reproducing apparatus according to an embodiment of the present invention;
2 to 7 are views for explaining various embodiments of a recording medium reproducing apparatus for performing a trick play service,
FIGS. 8 to 12 are diagrams for explaining various examples of the data structure of an optical disc including video data and additional information,
FIGS. 13 to 22 are diagrams for explaining various embodiments of a recording medium playback apparatus for performing an area-of-interest enlargement service,
23 is a block diagram showing an example of a configuration of a broadcast receiving apparatus for providing a service of interest enlargement service,
24 is a flowchart for explaining a method of providing a service of interest enlargement service,
25 to 32 are diagrams for explaining various embodiments of a recording medium playback apparatus for performing an object adjustment service,
33 to 35 are diagrams showing various examples of data structures stored in a recording medium for performing an object adjustment service,
36 to 39 are flowcharts for specifically explaining various methods of providing an object adjustment service,
40 is a diagram showing an example of a configuration of a broadcast receiving apparatus that provides an object coordination service,
41 to 46 are views for specifically explaining a method of recording additional information for use in various embodiments of the present invention.

Hereinafter, the present invention will be described in detail.

1 is a block diagram showing a configuration of a recording medium reproducing apparatus according to an embodiment of the present invention. The recording medium playback apparatus 100 refers to a device that detects and plays back data recorded on the recording medium 10.

The recording medium 10 may be various types of media such as a Blu-ray disc, a holographic disc, a DVD, a CD, a USB memory stick, an external hard disc, and the like. The recording medium reproducing apparatus 100 may be implemented as one independent apparatus as shown in FIG. 1, but is not limited thereto. For example, a display device such as a TV. In the following embodiments, for the sake of convenience of description, an apparatus for reproducing a Blu-ray Disc and providing the reproduced data to a display apparatus will be described as an example.

Referring to FIG. 1, a recording medium reproducing apparatus 100 includes a driver 110, a data processor 120, and a controller 130.

The driver unit 110 is a component for driving the recording medium 10 to detect data when the recording medium 10 is mounted. When the recording medium reproducing apparatus 100 is implemented as an apparatus for reproducing an optical disc such as a Blu-ray disc, the driver unit 110 is connected to a tray for raising the optical disc, a motor for rotating the optical disc, An optical pickup unit for emitting a laser beam to read or write a signal to or from the optical disc, an objective lens, and a driver unit 110 A DSP (Digital Signal Processor) for controlling and operating the overall function, a front end processor (FEP) for controlling the laser divergence of the optical pickup unit and analyzing the received signal, and the like.

Video data and various kinds of additional information may be recorded on the recording medium 10 mounted on the driver unit 110. When the recording medium is loaded, the driver unit 110 can load the recording medium and detect video data, additional information, and the like. The detected data may be provided to the data processing unit 120 or the control unit 130.

The video data may be encoded in a HEVC (High Efficiency Video Coding) encoding method and recorded on a recording medium. HEVC is a next-generation video coding standard that is being discussed by Joint Collaborative Team on Video Coding (JCT-VT), which is formed by ISO / IEC Moving Picture Experts Group (MPEG) and ITU-T Video Coding Experts Group to be. HEVC can encode 8K * 4K (7680x4320) image with about 2 times compression performance than existing MPEG4-AVC.

The video stream coded by the HEVC coding scheme includes an I frame, a P frame, a B frame, and the like. An I frame (Intra Frame) is a key frame directly compressed from a source. I frames can be decoded independently without reference to other frames. A P frame (Previous or Predicted Frame) is a frame formed based on information of a key frame that has been previously obtained. A B-frame (Bidirectional Frame) is a frame constructed based on information of I and P frames before and after.

The data processing unit 120 is a structure for processing the video data read by the driver unit 110. The data processing unit 120 includes a demultiplexer for detecting video data, audio data, additional data, etc. of the content recorded on the recording medium 10, a video decoder for decoding video data, a scaler, an audio decoder A filtering unit for noise filtering, a signal amplifying unit for amplifying an audio signal, a data decoder unit for processing additional data, a rendering unit for generating an object according to the decoded additional data, a mixer, and the like. The data processing unit 120 may decode the video data read by the driver unit 110 using a codec corresponding to the encoding method of the data recorded on the recording medium 10. [ The process for the audio data is omitted from the description and description in this specification.

The control unit 130 provides various services using the data read by the driver unit 110. The service may include at least one of a trick play service, a service area expansion service, and an object adjustment service.

Trick play service refers to a service that plays back video data at various speeds (2x, 3x, 4x, ....) in forward or backward directions. The ROI service refers to a service for partially displaying only a part of a frame and displaying it in a distinctive manner. The object adjustment service is a service for displaying objects such as a caption or a menu displayed on the screen in a magnified view. The control unit 130 may appropriately use the video data and the additional information recorded in the recording medium 10 to provide such a service.

The control unit 130 may appropriately use the video data and the additional information recorded in the recording medium 10 to provide such a service. That is, in order for the above-described services to be supported, various additional information must be recorded in the recording medium.

In this case, the data should be recorded in a form conforming to the standard standard applied to the recording medium 10. [ When the video stream stored in the recording medium 10 is an HDMV HEVC video stream, the following constraints can be applied.

• The minimum size per slice is one largest coding tree block row. The slice may be composed of at least one maximum coding tree block sequence. The maximum coding tree block column may indicate the entire maximum coding tree block column in the horizontal column of the maximum coding tree block.

• The horizontal boundary of the tile can be aligned by the horizontal boundary of the slice.

HDMV HDVC streams can have multiple temporal sublayers. If trick_play_info is set to 1 in the extension data of the clip information,

□ vps_max_sub_layers_minus 1 can be 1 or 2, otherwise it can be 0.

□ sps_max_sub_layers_minus 1 can be 1 or 2, otherwise it can be 0.

□ vps_temporal_id_nesting_flag can be set to 1.

The temporal ID of the I frame may be equal to zero. The temporal ID of the P frame may be equal to 0 or 1. The temporal ID of the B frame may be larger than that of the P frame in the GOP. The temporal IDs of the B frames in the GOP may be the same. The temporal ID of the reference B frame may be greater than that of the P frame, less than that of the B frame in the GOP, and the temporal IDs of the reference B frame in the GOP may be the same. If there are three consecutive B frames, one of the three can be a reference B frame.

If is_there_interesting_region is set to 1 in the extension data of clip information,

Tiles_enabled_flag in the PPS can be set to 1, otherwise it can be zero.

The entropy_slice_enabled_flag in the PPS can be set to 1,

The dependent_slice_enable_flag in the slice header can be set to 1,

The loop_filter_across_tiles_enabled_flag in the PPS can be set to 0,

If the boundary of the slice is shared with the boundary of the tile, the loop_filter_across_slices_enabled_flag in the PPS can be set to zero.

● The allowed values of the parameters of the VPS can be:

If the value of vps_max_sub_layers_minus1 is greater than 0, the value of vps_temporal_id_nesting_flag may be equal to 1. This means that there is a temporal sublayer and can be used for trick play purposes. Otherwise, the value of vps_temporal_id_nesting_flag may be equal to zero.

The value of vps_max_sub_layers_minus1 can be 0, 1, or 2.

The value of vps_num_hrd_parameters can be set to zero.

The allowed values of the parameters of profile_and_level () referenced by VPS and SPS may be as follows:

The value of general_profile_space can be set to zero.

The value of general_profile_idc can be set to 1.

The value of general_profile_compatible_flag [i] may be set to one.

The value of general_level_idc can be one of 90, 93, 120, 123 or 150.

The value of sub_layer_profile_present_flag [i] may be set to zero.

The value of sub_layer_level_present_flag [i] may be set to zero.

The sub_layer_profile_space [i], the sub_layer_profile_idc [i], the sub_layer_profile_compactibility_flag [i] .

The allowable values of the parameters of the SPS are as follows:

The value of sps_max_sub_layers_minus1 can be either 0, 1, or 2, and can be equal to the value of vps_max_sub_layers_minus1.

If the value of vps_temporal_id_nesting_flag is equal to 1, the value of sps_temporal_id_nesting_flag can be 1.

The value of vui_parameters_present_flag can be set to 1.

The permissible values of the parameters of the PPS are:

The value of entropy_slice_enabled_flag will not change.

□ If tiles_enabled_flag is set to 1, the value of entropy_slice_enabled_flag can be set to 1 for comfortable viewing of UHD content on the HD display. Then, the dependent_slice_enabled_flag in the slice header can be set to one.

□ If tiles_enabled_flag is set to 1, the values of loop_filter_across_tiles_enabled_flag and loop_filter_across_slices_enabled_flag can be set to zero.

As described above, the controller 130 can detect the video data and the additional information from the recording medium 10 on which the data satisfying the various constraints described above are recorded, and provide various services. Hereinafter, embodiments for providing such a service will be described in detail.

≪ Embodiment to perform trick play >

As described above, various types of recording media are currently used. A recording medium reproducing apparatus for reproducing such a recording medium needs to provide a trick play function for reproducing video in all directions or backward direction at a high speed for user convenience as well as normal video playback.

Accordingly, in this embodiment, it is possible to provide accurate and detailed trick play services using the layer hierarchy and the additional information in the video data.

That is, as described above, the video data to be recorded in the recording medium 10 may be coded by the HEVC coding method, and may include an I frame, a P frame, a B frame, and the like.

I, P, and B frames may be divided into a plurality of layers. The hierarchy may be determined according to the decoding order. That is, a frame that can be decoded independently or decoded with reference to at least another frame may be set as a lower layer, and other frames may be set as an upper layer. The hierarchical division example will be described in detail later.

In addition, the recording medium 10 may be recorded with additional information that can be utilized for trick play. The additional information may include GOP (Group of Pictures) structure information, HEVC information, offset information, and the like. The GOP structure information indicates whether or not a Br picture exists in the GOP, the number of B pictures existing between the I or P frames, and the position of the Br picture among the consecutive Bs pictures. Here, one picture refers to a field of one frame or a complementary field pair, and one frame may be a frame itself or a complementary reference field pair or a complementary non-reference field pair. The I frame refers to a case where a frame is composed of only I slices and the B frame and the Br frame refers to a case where a frame is composed of only B slices and the P frame refers to a case where the frame includes only P slices.

The Br frame refers to a reference frame that can be referred to by another B frame among B frames to be decoded referring to another frame. For convenience of explanation, the non-reference B frame excluding the Br frame is referred to as a B frame.

The HEVC information may include a temporal ID for I, P, and B pictures. The temporal IDs may be set differently for each layer. For example, if the temporal ID of the lowest layer is 0, the temporal ID can be set in the order of 1, 2, ... n for the upper layer.

The offset information may include information on an offset to an I, P, or B frame immediately following a decoding order, coding size information of I, P, and B frames to be read, and the like.

The user can input a trick play command using a button (not shown) or a remote controller provided in the main body of the recording medium playback apparatus 100. [ The trick play command is a command for determining how many times the recording medium is reproduced. The trick play rate can be determined by the trick play command. Specifically, the controller 130 can determine that the double-speed trick play command is input when the button matched with the user trick play command is selected once. On the other hand, if the button is selected twice, the speed can be determined differently according to the number of times of button selection in the order of 3 times, 3 times, and 4 times. Alternatively, the control unit 130 may determine a different speed depending on the time that the button matched with the trick play command is pressed. That is, the faster the button is pressed, the faster the speed can be set. In addition, different buttons may be matched for each speed, or a UI screen for selecting a double speed may be displayed to allow the user to determine the speed on the UI screen.

When a trick play command is input, the controller 130 performs a trick play corresponding to the trick play rate determined by the command. More specifically, the control unit 130 selects the layer to be decoded in the video stream using the additional information. The data processing unit 120 is controlled to decode the video data of the selected layer. When decoding is performed, the controller 130 performs trick play corresponding to the trick play speed selected by the user using all or a part of the decoded data. If the recording medium reproducing apparatus is implemented as a Blu-ray Disc reproducing apparatus, a DVD reproducing apparatus, or the like, the control unit 130 selectively outputs a frame corresponding to all or a part of the decoded data to an external display apparatus. The external display device receives and displays the output frame. Thus, trick play can be performed.

Meanwhile, the recording medium reproducing apparatus described above may be implemented in the form of a display device having a display unit (not shown). In this case, the control unit 130 may output the selected frame directly through the display unit to perform trick play.

The hierarchical structure of the video data can be variously implemented. For example, a first layer including an I frame and a P frame, a second layer including a referenceable Br frame, and a third layer including a remaining B frame except a Br frame.

The control unit 130 grasps the type of the GOP using the GOP structure information included in the additional information. That is, it is determined whether there is a Br frame, its position, and how many B frames exist between I frames or P frames. Then, a hierarchy capable of implementing trick play of a predetermined speed is selected. For example, if the I frame and the P frame are arranged at every four frame intervals, if the user selects the 4x fast trick play, the controller 130 can select only the first layer. Accordingly, when the I frame and the P frame are decoded and output, trick play of 4 times speed can be accurately performed. On the other hand, if the user selects the double-speed trick play, the controller 130 can select the first layer and the second layer together. Accordingly, if both I, P, and Br frames are decoded and output, trick play at 2x speed can be performed.

The control unit 130 variously combines the layers to be decoded according to the trick play speed selected by the user, selectively outputs only a part of the frames of the decoded layer, and performs trick play of a predetermined speed. The control unit 130 can selectively read, decode and output only the frames required for fast forward (fast reverse) using the above-described additional information. In particular, when reproducing at 4 times or more speed, there may be frames which are not read out and decoded and output. The control unit 130 may omit reading and decoding by referring to the temporal ID according to the configuration of the video stream. Accordingly, elaborate trick play becomes possible by using P, B, and Br that can not be used as a random access point. Also, the controller 130 can know the length information of the I, P, and B frames based on the offset information among the additional information. Accordingly, in performing the trick play, the start position of the I and P frames can be determined using the offset information, and the data necessary for trick play can be read without parsing using the length.

2 is a view for explaining an example of a process of generating a video stream including frames divided into three layers. More specifically, FIG. 2 illustrates a process of generating a compressed video stream by coding a video stream composed of 24 frames per second in a progressive manner with the HEVC encoder 2000.

2, the video data stored in the recording medium 10 may be coded according to the HEVC standard, but the terms of the MPEG-2 video coding standard and the MPEG-4 AVC video coding standard We will use it together. For example, 24p means that the video stream has 24 frames as progressive video, and 48i means that it has 48 fields as interlaced video.

FIG. 2 shows a process of generating a 24p video stream for decoding in an HEVC decoder having a DPB (decoded picture buffer) of size 3.

2, an uncompressed video sequence 310 comprising a plurality of frames arranged in display order is encoded by the HEVC encoder 2000 and converted into a compressed video sequence 330. In FIG. 2, a POC (Picture Order Count) means a sequence in which frames are output when being reproduced.

In FIG. 2, each frame is divided into three layers. That is, it is divided into a first layer of I and P frames, a second layer of Br frames, and a third layer of B frames. In the hierarchical diagram 320 of the frame, arrows indicate referencing, I, P and B denote I frame, P frame and B frame, respectively, and a Br frame denotes a B frame that can be referred to. The subscripts indicate the display order.

Such a video stream can be generated in a content production apparatus, a transmission apparatus, or the like. Hereinafter, an apparatus for generating a video stream will be collectively referred to as a stream generating apparatus. The stream generating apparatus may be implemented variously in accordance with the embodiment. Further, the stream generating apparatus can generate a stream so as to satisfy the following conditions.

<Condition>

- I and P pictures have the same display order and decoding order.

- If the B picture (ie, the non-reference B picture) is ahead of the decoding order of the other B pictures, it is also in the display order.

- P picture does not refer to B picture.

- B picture can refer to complementary field pairs of I frame or P frame or I, P picture immediately before or immediately after the display order. It is also possible to refer to complementary field pairs of a Br picture or a B picture located between I frame and P frame.

A Br picture (i.e., a reference B picture) may refer to complementary field pairs of an I frame or a P frame or I, P picture just before or immediately after. Also, the Br field can refer to the Br field constituting the complementary reference field pair with itself.

- the maximum number of consecutive B frames in the display order, a complementary reference field pair of a B picture, or a complementary non-reference field pair of a B picture is three.

In the stream generating apparatus having the HEVC encoder 2000, video encoding is performed according to the above-described conditions, and then the video is transmitted. When the stream is a stream for a broadcast program used in the broadcast system, the GOP (Group of Pictures) structure information and the HEVC information among the above-described additional information can be kept constant for the entire stream and the offset information can be variably transmitted .

Therefore, if a GOP (Group of Pictures) structure information and HEVC information are secured for one video stream in a recording medium playback apparatus for receiving a video stream and offset information is provided for every I frame or P frame, The trick play in the reverse direction becomes possible.

FIG. 3 shows a process of decoding a 24p video stream generated as shown in FIG. 2 using an HEVC decoder having a DPB of size 3.

Referring to FIG. 3, a video stream 410 including frames divided into three layers is input to the recording medium playback apparatus 100. A predetermined temporal ID is set for each layer. That is, a temporal ID such as 0 for the first layer, 1 for the second layer, 2 for the third layer is set. The control unit 130 can read and decode data for each frame according to the decoding order.

In FIG. 3, the second stream 420 represents frames arranged in a decoding order. The HEVC decoder 121 in the data processing unit 120 sequentially decodes in accordance with the decoding order. At this time, each frame is sequentially buffered in the DPB 440 of the HEVC. The control unit 130 may control the data processing unit 120 to align and output the decoded frames according to the display order.

In FIG. 3, the last stream 430 represents a stream arranged in display order.

When the trick play command is input, the control unit 130 reads and decodes only the appropriate frame using the additional information, and outputs trick play corresponding to the trick play command.

3, the additional information may have the following values.

- GOP structure information -

Presence of Br picture in GOP: YES

Number of B pictures between I or P pictures immediately before and immediately behind: 3

Position of the Br picture among consecutive Bs pictures: 2

- HEVC information -

Temporal IDs of I and P pictures: 0, 0

- Offset information -

Offset to I, P, or B frames immediately following decoding order: offset 1, offset 2, offset 3

Coding size information of I, P and B frames to be read: 1.3Mbyte (including I and Br), 800Kbyte (including P and Br), 800Kbyte (including P and Br)

The control unit 130 can grasp the structure of the GOP based on the GOP structure information and selectively read, decode and output the layer corresponding to the trick play double speed selected by the user based on the HEVC information and the offset information.

The recording medium playback apparatus 100 can acquire various information related to the trick play from the additional information. On the other hand, GOPs can be created in various structures. Therefore, it is possible to play various tricks depending on the structure of the GOP.

4 is a table summarizing examples of information obtained from various examples of GOP structure information and additional information thereof. According to FIG. 4, the number of consecutive Bs can be variously set as 1, 2, and 3. Also, a Br picture may be included or omitted. Accordingly, a value indicating whether a Br picture exists in the GOP structure information can be recorded as YES or NO. In addition, the position of the Br can also be set variously.

The recording medium playback apparatus 100 may check the supportable trick play speed based on the GOP structure information and determine whether to perform reordering at the minimum speed playback. Reordering refers to a task of redefining the buffering order of the DPB because the decoding order and the display order of the recording medium do not match.

The trick play double speed can be variously implemented as shown in FIG. 4, such as 2x, pseudo 2x, 3x, 4x, 6x, 8x, 12x, 16x, Here, pseudo 2x is not a precise 2x speed, but a similar level of trick play speed at 2x. That is, when the number of consecutive B frames is 1 and 2, only I and P are reproduced. However, when the number of consecutive B frames is 3, P and Br are also reproduced. In this case, depending on the position of Br, it may be 2x accurate or pseudo 2x. On the other hand, the recording medium reproducing apparatus 100 may determine whether or not reordering is necessary depending on whether a B frame or a Br frame is reproduced.

As described above, various trick play can be supported according to the structure of the GOP. The recording medium reproducing apparatus may selectively output data for the decoded frame to perform trick play corresponding to the trick play speed selected by the user.

5 is a diagram for performing a trick play based on offset information when a 24p video stream is input.

In FIG. 5, a first stream 610 indicates a structure of a stream according to an output order, and a second stream 620 indicates a structure of a stream according to a decoding order.

According to the first stream 610, when the user selects the 2 × speed playback, the controller 130 must perform playback in the order of I0, Br2, P4, P8, Br6. At this time, since Br2 and Br6 are displayed before P4 and P8 respectively when displayed, the data processing unit 120 performs reordering in the DPB in the HEVC decoder 121. [ In the other high-speed playback, it is possible to perform trick play by reading out all the P's and decoding it, and then determining whether or not to display them selectively.

More specifically, when a 2x trick play command (fast forward or fast reverse) is input, the recording medium reproducing apparatus 100 initially reproduces only the I frame I0. Then, the P frame P4 and the B frame Br2 are read one by one from a position apart from the offset 1 by one, and then the B frame Br2 and the P frame P4 are output. After the offset 1 + offset 2, jump to the P frame P8, read out, and play back. If the next GOP is input after performing the reproduction in this manner, the I frame and the B frame are read and reordered, and then the B frame and the I frame are output. The control unit 130 repeatedly performs this operation until a user command for stopping the trick play is inputted or until the reproduction is completed up to the last contents time.

In the case of 4x trick play, the recording medium reproducing apparatus 100 initially reproduces only the I frame I0. Then, only the P frame P4 is read out at a position apart from the offset 1. Then, it is offset by 1 + offset 2, and then jumps to the P frame (P8) position. In this way, when playing continuously, when the next GOP is encountered, the I frame is read and output. The control unit 130 repeats this operation while the trick play is performed.

In the case of 8x trick play, the recording medium reproducing apparatus 100 initially reproduces only the I frame I0. Then, only the P frame P4 is read and decoded at a position apart from the offset 1 and stored in the DPB. The data processing unit 120 decodes and outputs the next P frame P8 with reference to the current P frame P4. Because it is 8x speed, P4 only decodes but does not output. As a result, since the I frame and the P8 frame are outputted, 8x fast trick play can be performed. The control unit 130 repeats this operation while the trick play is performed. If the next frame to be output is an I frame, the controller 130 does not need to read the current P frame. In this case, the control unit 130 skips the reading of the P frame.

In this way, trick play of various speeds can be performed.

On the other hand, when trick play of 4x or higher speed is implemented by using only P frame, trick play is possible by decoding all P frames, but there is a case that some of P frames which need not be displayed need not be decoded. Therefore, the P frame to be decoded can omit decoding and reduce the burden on the decoder. In this case, the P frame can be divided into a first layer and a second layer.

Meanwhile, according to another embodiment of the present invention, a plurality of frames are classified into a first layer including an I frame and a partial P frame, a second layer including a remaining P frame, and a third layer including a B frame .

6 is a diagram for explaining a method of reproducing a video stream having a structure according to this embodiment. Specifically, FIG. 6 shows a trick play of a video stream composed of 24 frames or 30 frames per second in a progressive manner to an HEVC decoder having a DPB of size 2. The recording medium playback apparatus 100 can determine the decoding necessity using the HEVC information among the additional information, i.e., the temporal ID.

6, the original frame 810 is arranged in the order of I, B, P, B, P, B, P, B, P, B, P, B, P, (Temporal ID 0), P2, P6, and P10 frames are the second layer (temporal ID 1), and the B frame is the third layer Layer (temporal ID 2).

The stream generating apparatus encodes the original frame 810. The frames of the encoded stream 830 are arranged in the order of I0, P2, B1, P4, B3, P6, B5, P8, B7 ....

The recording medium playback apparatus 100 may skip the decoding process if the temporal ID of the P frame that need not be displayed at the time of double speed playback is larger than the temporal ID of the next P frame. That is, when the trick play is performed at 4 times speed based on the stream of FIG. 8, frames should be outputted in order of I0, P4, P8, P12. The recording medium reproducing apparatus 100 first reads and decodes the I0 frame, and then jumps to the next P frame P2 using the offset information. The control unit 130 skips the decoding of the P2 frame since the temporal ID of the P2 frame is 1 and the temporal ID of the next P frame P4 is 0. [ In FIG. 6, a section where skipping is performed in the case of 4x trick play is shown.

The trick play method for the stream of FIG. 6 is also similar to the method described in FIG. 3, so redundant explanations are omitted.

As described above, the recording medium reproducing apparatus 100 can perform trick play of various speeds based on various additional information. This additional information may be more useful when reading a video stream stored on an optical disc with limited read speed.

7 is a flowchart illustrating a trick play method of a recording medium playback apparatus according to an embodiment of the present invention. 7, a recording medium on which video data and additional information for a plurality of frames separated by layers are loaded (S910), a trick play command is input (S920), and the additional information (S930).

The recording medium reproducing apparatus selects the layer to be decoded based on the side information and the trick play command. The data of the selected layer is decoded (S940). The recording medium reproducing apparatus outputs at least some data out of the decoded data and performs trick play having a trick play speed designated by the trick play command (S950).

Examples of the hierarchy and additional information of the frame described in the video data and the concrete method of performing the trick play using the additional information are specifically described in the description of FIGS. 2 to 6, The description is omitted.

Meanwhile, as described above, the recording medium can be implemented in various types such as a Blu-ray disc, a holographic disc, a DVD, a CD, a USB memory stick, an external hard disc, and the like.

8 is a diagram showing the structure of data stored in the recording medium. Referring to FIG. 8, the recording medium is divided into a plurality of areas 1010 and 1020. In the case of an optical disc such as a Blu-ray disc, an area may be divided into a predetermined number of tracks. In the first area 1010, video data for a plurality of frames classified by layers may be recorded, and additional information may be recorded in the second area 1020.

As described above, the hierarchy of frames can be variously defined according to the embodiment. In the above-described examples, three layers are shown, but they may be divided into two layers or four or more layers.

The additional information recorded in the second area 1020 includes GOP structure information 1011 on the structure of the video frame in the GOP, HEVC information 1012 on the temporal ID determined differently for each layer, The offset information 1013 may be used to specify the offset information. The trick play method using the additional information has been described in detail in the above-described various embodiments, and therefore duplicate explanation is omitted.

9 is a diagram showing a structure of data stored in a recording medium when the recording medium is embodied as a Blu-ray disc.

10, the Blu-ray Disc is composed of four layers such as an index table 1110, a movie object / BD-J object 1120, a play list 1130, and a clip 1140.

The clip 1140 is composed of a clip AV stream file, which is a video stream file, and a clip information file, which is an attribute file in database form associated with the clip AV stream file. The clip information file stores a time stamp for the access point. The recording medium reproducing apparatus can find out the video stream reading position by using the access point information in this file.

The play list (c) is an information structure for informing the order in which the bit streams used in reproduction are to be reproduced, and is composed of a plurality of play items. Typically, a playlist comprises a content such as a movie or a drama, and a playitem constitutes a chapter of the content. A play item in the play list indicates which stream attribute, such as a video stream, an audio stream, a subtitle stream, a menu stream, etc., to be played, and which stream ID (or stream number) has. For example, it tells the stream properties such as video format, frame rate, subtitles, and language code for audio.

The various additional information stored in the recording medium by the above-described embodiments are recorded at appropriate positions in the recording medium according to their attributes.

10 shows an example of the structure of the additional information included in the clip information. According to Fig. 10, the clip information is divided into stream information and a random access point. GOP structure information and HEVC information are recorded in the stream information, and offset information is recorded in the random access point.

In Figure 10, the Br picture number information 1220, the offset 1250 to the next immediately following I or P frame in the decoding order can be set to mandatory data to be written mandatory and the remaining data 1210, 1230, 1240 may be set to optional data to be selectively written.

Temporal ID information 1240 is used to determine an I or P picture that does not need to read and decode a frame during high-speed trick play. The coding size information 1260 of the current picture is used to determine how much data to read after performing data access using the offset. Using the coding size information 1260, it is possible to determine whether or not to read the data without parsing the data. Other information 1210 indicating the presence or absence of Br and Br position information 1230 can be used for accurate double speed calculation (i.e., 2x or pseudo 2x).

On the other hand, the structure of a GOP may not normally vary throughout the video stream. In this case, as shown in FIG. 10, the GOP structure information may be displayed as a part of the stream information indicating information on the video stream.

Since the offset information is information on each I picture and P picture in the stream as random access point information, it can be displayed as a part of the random access point information. In FIG. 10, it is shown that the offset for the I and P frames is recorded, but it is also possible to display the offset only for the P frames.

11 is a diagram showing another structure of offset information. According to Fig. 11, GOP structure information and HEVC information are recorded in the stream information, and offset information is recorded in the random access point. The random access point is again divided into an I picture 1310 and a P frame 1320. Various offset information 1330 is recorded in the random access point for the P frame.

Using the structure shown in FIG. 11, the representation of the I frame can use the existing random access point information as it is, thereby reducing the capacity used for storing additional information.

As described above, the offset information is part of the random access point information and may be expressed in the clip information, but may be inserted into the stream. That is, if the SEI information is inserted before the start of the GOP, the recording medium reproduction apparatus can read and reproduce it when performing the trick play.

Meanwhile, in the above-described embodiments, examples of the method in which the additional information is recorded on the premise that the GOP structure is not changed in the entire video stream has been described. However, the GOP may be changed. In this case, various additional information may be included in the random access point.

12 shows a data structure when additional information is included in the random access point. According to Fig. 12, the random access point is divided into one for the I picture and one for the P picture. GOP structure information 1410, HEVC information 1420, and offset information 1430 are included in the random access point for the P picture for each GOP.

The unit for displaying offset and coding size information may be a byte, an SPN (Source Packet Number), a sector, or the like. Or may be displayed in units of three sectors which is the least common multiple of the SPN and the sector. The unit and amount of the offset information may be determined according to various criteria such as the type and size of the content.

As described above, the additional information can be stored in the recording medium in various manners. The recording medium reproducing apparatus can perform trick play as described above. In addition to the trick play, the recording medium playback apparatus may perform the service area enlargement service.

&Lt; Embodiment to provide the service of interest enlargement service >

FIG. 13 is a block diagram illustrating a configuration of a recording medium playback apparatus 100 that provides a service area enlargement service according to another embodiment of the present invention.

Referring to FIG. 13, the recording medium reproducing apparatus 100 includes a driver 110, a data processor 120, a controller 130, an interface 140, and a storage 150.

The driver unit 110 is a component for driving the recording medium to detect data when the recording medium is mounted. As described above, the recording medium can be various types of media such as an optical disc such as a Blu-ray disc, a holographic disc, a USB memory stick, an external hard disc, and the like. High-resolution contents can be recorded on the recording medium. When the recording medium on which the high-resolution content is recorded is loaded, the driver unit 110 detects the high-resolution content. Here, the high-resolution content means a content having a relatively higher resolution than the output resolution of the display device. For example, UHD content. Hereinafter, a case in which the Blu-ray disc 10 in which UHD contents are stored can be reproduced will be described as an example.

The data processing unit 120 processes the high-resolution content detected by the driver unit 110 to generate a video frame.

The interface unit 140 is a structure for transmitting a video frame or an audio signal generated by the data processing unit 120 to a display device. Specifically, the interface unit 140 may be implemented with an HDMI (High Definition Multimedia Interface).

The storage unit 150 is a component for storing O / S, various programs, data, and the like required for the operation of the recording medium playback apparatus 100. [ The control unit 130 may store various data received from the display device through the interface unit 140 or various information and data detected from the disc 10 in the storage unit 150. [

The control unit 130 controls the driver unit 110 and the data processing unit 120 to process high-resolution contents when a recording medium such as a disc is mounted on the driver unit 110. [ The control unit 130 determines the characteristics of the display device connected to the interface unit 140 using the display characteristic information stored in the storage unit 150.

Display characteristic information may be obtained and stored in the storage unit 150 according to various embodiments. For example, the control unit 130 may receive the display characteristic information from the display device through the interface unit 140. The display characteristic information may include various information such as an output resolution of the display panel provided in the display device, a pixel count, a display size, a viewing distance, a device model name, and the like. As described above, if the interface unit 140 is implemented using HDMI, the control unit 130 can obtain extended display identification data (EDID). The controller 130 may use the EDID maximum horizontal image size, the maximum vertical image size, the established timing bitmap, and the like to determine whether the currently connected display device is a low resolution display device May be estimated. The display characteristic information may be called various names such as viewing environment information, resolution information, EDID, and the like.

As another example, the display characteristic information may be input directly by the user. Specifically, the recording medium playback apparatus 100 can display a UI (User Interface) capable of determining an output resolution through a touch screen panel or an external display device provided in the recording medium playback apparatus 100 . The user can input the output resolution such as UHD, HD, etc. through this UI. The control unit 130 stores the display characteristic information such as the input resolution, which is input, in the storage unit 150. If the display apparatus and the recording medium playback apparatus are connected in the same manner as HDMI, display characteristic information such as screen size information can be automatically obtained and stored as viewing environment information in the recording medium playback apparatus. On the other hand, when the analog connection method is used or the display characteristic information can not be obtained for other reasons, the viewing environment information may be generated at the time of manufacture or at a user setting value and stored in the storage unit 150. [

As described above, the information on the viewing environment of the high-resolution content can be stored in the storage unit 150. [ The control unit 130 determines the characteristics of the display device connected to the interface unit 140 using the information stored in the storage unit 150.

If it is determined that the display device is a low resolution display device, the controller 130 controls the data processor 120 to replace at least a portion of the video frames of the high resolution content with the region of interest image. Here, the low resolution means a resolution relatively lower than the resolution of the content. For example, if the content is UHD content having a resolution of about 4000 (3840x2160) to 8000 (7680x4320), the output resolution of the HD display device having the resolution of 1920x1080 corresponds to the lower resolution. Hereinafter, the high resolution content is UHD content and the low resolution display panel or device is a display panel or device having HD resolution. However, the present invention is not limited thereto and the resolution of the content may be larger than that of the display panel or the device The present embodiment can be applied as it is.

The region of interest image is an image of a local region within one video frame. That is, the video frame of the UHD contents is generated based on that the UHD contents are displayed on a UHD display device which is four times larger than the HD display device. Accordingly, each of the detailed image areas included in the entire image is made a size that can be identified on the basis of the viewing distance of the user based on the UHD viewing environment. However, since it is downscaled by 1/4 times to be displayed on the HD display device, the size of the detailed image area is greatly reduced, so that even if the user is difficult to identify at the same viewing distance, or even if identification is possible, Is difficult to deliver. For example, when the UHD image is displayed on the HD display device, according to the related art, even though the main content of the story is the person on the screen, the person occupies only a small portion of the screen, not the whole screen. In this case, the viewer can not identify the facial expressions or eyes of the characters who share the conversation. Therefore, it is difficult to recognize the feeling that the producer wants to convey.

Therefore, the content creator can select, as a region of interest, a portion of the detailed image regions of each video frame that the user should pay particular attention to. The content creator can provide the region of interest information indicating the region of interest to the recording medium playback apparatus.

The control unit 130 may control the data processing unit 120 to identify a region of interest included in the video frame of the high-resolution content based on the region of interest information, generate the region of interest as a frame size, and replace the corresponding video frame have. The region of interest information may be recorded on the disc 10 itself, provided through an external server device, or provided in various other ways, depending on the embodiment.

Among the constituent elements constituting the embodiment of Fig. 13, the parts overlapping with the constituent elements described in the embodiment of Fig. 1 will not be specifically described and shown.

On the other hand, cropping information may be provided along with the region of interest information. The cripping information refers to information defining a part to be deleted in consideration of the size restriction of an LCU (Largest Coding Unit). That is, when an interesting region is defined in units of LCU in an image frame, an image of 1920 x 1088 size can be extracted from the UHD image. In order to display such an image on a 1920x1080 sized display device, crawling is required. Accordingly, if the framing information defining the position to be framed is provided, a suitable HD size image can be output through the display device. Such cryptographic information may also be provided through a recording medium such as the disk 10, or may be provided through an external server apparatus.

According to an exemplary embodiment, a video frame including a region of interest among video frames of high-resolution content may be divided into a plurality of tile units. The size, position, and shape of each tile may be adaptively selected to fit the size of the region of interest.

Tile is an example of a coding unit in a UHD video encoder.

14 is a diagram for explaining the meaning of a slice and a tile among coding units in the UHD video encoder. The next generation video coding standard, HEVC, which is being discussed in Joint Collaborative Team on Video Coding (JCT-VC), which was formed by ISO / IEC Moving Picture Experts Group (MPEG) and Video Coding Experts Group (ITU-T VCEG) (High Efficiency Video Coding), slices and tiles are defined as shown in FIG.

14, one picture, i.e., one video frame, is divided into a slice consisting of an integer number of coding tree blocks having a consecutive raster scan order, And a rectangular tile including tree blocks. The coding tree block constituting one slice may belong to several different tiles. A plurality of tiles constituting one picture can be decoded independently and simultaneously by a plurality of decoders under a condition that a filter for improving the picture quality of the tile boundary is not used.

As such, one video frame can be divided into a plurality of tile data, and each tile data can be decoded independently.

Accordingly, if interest area information specifying the tile data corresponding to the area of interest is provided, the controller 130 selectively decodes the tile data corresponding to the area of interest among a plurality of tile data according to the area information of interest, The data processing unit 120 may be controlled to generate an image of the data in a frame size.

Fig. 15 shows a case where the region of interest is represented by a tile. As shown in FIG. 15, one video frame can be divided into a plurality of tiles. Since a tile has a rectangular shape with a coding tree block as a basic unit, when a center of the screen is a region of interest, one screen is divided into nine tiles.

According to FIG. 15, the entire area of the video frame 60 can be divided into a total of 9 tiles (Tile ID 0 to 9). If the 5th tile, i.e., TileID 4, is designated as a region of interest, the region of interest information may include TileID 4, which is an identifier for specifying the tile. The control unit 130 controls the data processing unit 120 to expand the image of the tile corresponding to the Tile ID 4 to the entire frame size and replace the corresponding video frame 60 with the image of the expanded TileID 4 portion.

FIG. 16 is a diagram for explaining the operation of the recording medium reproducing apparatus according to the first embodiment for providing the area-of-interest enlarging service.

According to the embodiment of FIG. 16, the area of interest information can be stored in the disc, that is, the recording medium, together with the high-resolution content. According to one example, a high resolution Type information indicating the type of the high-resolution content, interest area information, notification information for informing whether or not the ROI exists, video output mode information for allowing the video frame to be changed using the ROI, and the like Lt; / RTI &gt; It is needless to say that information on subtitles and menus to be added to the high-resolution content may be further included.

High-resolution content means content such as the UHD image described above. The video data of the high-resolution content may include a plurality of tile data.

On the other hand, as described above, the recording medium reproducing apparatus 100 requires display characteristic information in order to grasp whether the screen for displaying the content is a screen for high resolution or a screen for HD. The display characteristic information can be regarded as information necessary for selecting and outputting an object suitable for the screen, but the type information can be selectively recordable information.

The region of interest information is information for specifying a region of interest included in each video frame. According to an embodiment, the region of interest information may have various values. If a video frame is divided into a plurality of tiles and a plurality of tile data is included in the video data as in the present embodiment, the region of interest information may be information specifying at least one tile data among the tile data . According to the H.264 standard, the region of interest information may be recorded in SEI (Supplemental Enhancement Information) or may be stored as separate navigation information.

The video output mode information is information for determining whether to replace the original picture with an image of the region of interest or output the original picture as it is. The video output mode information may include a first value corresponding to Yes or a second value corresponding to No. The video output mode information may be determined by the content creator's intention. That is, some producers may not desire to judge and process the difference between the content and the viewing environment in the recording medium reproducing apparatus 100 by itself. In consideration of such a case, it is necessary to provide the maker with a means for controlling the video frame so as not to arbitrarily change the video frame, and the video output mode information plays such role.

Various information can be stored in the disk 10 as described above. The control unit 130 recognizes the viewing environment of the display device connected to the recording medium reproducing apparatus 100 by using the display characteristic information stored in the storage unit 150 when the disk 10 is loaded.

16 (a) shows a case where the UHD display device 200 is connected. In this case, the controller 130 directly decodes the video data of the high-resolution contents to provide the original video frames. Accordingly, in the UHD display device 200, the original video frames of the high-resolution contents are displayed as they are.

16 (b) and 16 (c) show a case in which the HD display device 300 is connected. When it is determined that the HD display device 300 is connected, the controller 130 downscales the video frame of the high-resolution content to match the display size of the HD display device 300. Then, the control unit 130 confirms the video output mode information.

If the video output mode information has a value of No, the control unit 130 downscales the video frames of the high-resolution contents as a whole according to the display size of the HD display apparatus 300. [ Thus, as shown in Fig. 16B, the original video frame is displayed as it is in a reduced state.

On the other hand, if it is determined that the video output mode information is YES, the control unit 130 confirms the above-described notification information from the information detected by the driver unit 110. [ Thus, it is determined whether or not the region of interest information is included. If the region of interest information is not included, the video data of the high-resolution content is processed to generate a plurality of video frames as they are, and then provided to the display device through the interface unit 140. On the other hand, if the region of interest information is included, the control unit 130 controls the data processing unit 120 to selectively process the tile data designated by the region of interest information to generate a video frame size. Thus, as shown in (c) of FIG. 16, in the HD display device 300, an image corresponding to Tile ID 4 is displayed in a frame size.

With this processing, the user can view important portions of the video frames of discriminating power even in a viewing environment in which each video frame of the high-resolution contents is reduced in size overall in accordance with the display size.

Meanwhile, in the above-described embodiment, since the type information is option information that can be selectively described, the content creator may not record the type information of the content. If the content creator does not record the type information of the content, the control unit 130 may determine the type of the content based on the information reflecting the characteristics of the display device, and may perform the above-described operations.

17 shows a configuration for explaining the operation of the recording medium reproducing apparatus according to the above-described embodiment. 17, the data processing unit 120 of the recording medium reproducing apparatus 100 includes a video decoder unit 121 and a scaler 122. [

The video decoder unit 121 is a structure for decoding video data of high resolution content stored in the disk 10. [

When the disc 10 is mounted, the control unit 130 drives the driver unit 110 to detect various data stored in the disc 10. The control unit 130 compares the information about the viewing environment of the display device 300 stored in the storage unit 150 with the type information stored in the disk 10. [ If the high resolution content is stored in the disc 10 and the viewing environment is low resolution, the control unit 130 controls the video decoder unit (not shown) based on the region of interest information and the video output mode information stored in the disc 10 121).

As in the above-described embodiment, the video frame including the region of interest may be divided into a plurality of tiles. In this case, the bit stream for the video frame may be divided into a plurality of tile data units.

If the video output mode information is Yes, the controller 130 controls the video decoder unit 121 to selectively decode only the tile data specified by the region of interest information. If the video output mode information is No, the control unit 130 controls the video decoder unit 121 to decode all data for the video frame.

The scaler 122 constructs a video frame using the decoded data in the video decoder unit 121. [ As a result, the video frame including the region of interest is replaced with the region of interest generated by the frame size, and the video frame that does not include the region of interest is downscaled as is to fit the display size of the HD display apparatus 300. [ The scaled video frame in the scaler 122 is transmitted to the display device 300. [ Although not shown in FIG. 17, it is needless to say that components such as a mixer for mixing graphics objects such as subtitles and menus into a video frame may be further included in the data processing unit 120.

The content creator can divide the video frame into a plurality of tiles according to the location, size, and type of the region of interest in the specific video frame, that is, the region of interest, if the region of interest exists. For example, if the region of interest is in the central region of the video frame, the video frame can be divided into a total of nine tiles as shown in FIG.

FIG. 18 shows a bit stream for representing a picture composed of one slice and nine tiles. The content creator encodes a video frame, i.e., a picture, including a region of interest, into a plurality of tile data. An HEVC encoder may be used for encoding. The HEVC syntax expresses the coding tree blocks inside the slice in a raster scan order, so that a bitstream is created in the order shown in FIG. That is, the 0th to 8th tile data are sequentially arranged in order from the head part to be inputted first to the video decoder 121 to the tail part to be inputted later. In FIG. 18, Tile IDs 0, 2, 6 and 8 indicate two coding tree blocks, TileID 3 and 5 indicate four coding tree blocks, TileID 1 and 7 indicate three coding tree blocks, and TileID 4 indicates 6 &Lt; / RTI &gt; coded tree blocks.

If TileID 4 is designated by the region of interest information, the video decoder unit 121 selectively detects and decodes the corresponding tile data (Tile ID 4), and does not decode the remaining tile data. Scaler 122 scales the decoded tile data to produce an image of frame size.

As described above, the recording medium playback apparatus can decode and process only a part of a specific video frame. In this case, the encoding process divides the data into a plurality of tile data and encodes the data.

According to another embodiment of the present invention, the recording medium reproducing apparatus can extract and display the region of interest also for the data not distinguished in the encoding process.

FIG. 19 is a diagram for explaining the operation of the recording medium reproducing apparatus according to the second embodiment for providing the ROI enlargement service. In the second embodiment, the recording medium, that is, the disc 10, is provided with high-resolution contents, type information, notification information indicating the presence or absence of the region of interest, which is not divided into tile units or one video frame is composed of one tile, Interest area information, video output mode information, and the like can be stored. Here, the region of interest information includes information for specifying the position of the region of interest within the video frame of the high-resolution content. For example, if the region of interest is specified in a rectangular shape, the region of interest information may include pixel coordinate values, width, and height information of one corner of the four corners of the rectangle.

When the disc 10 is loaded and loaded, the control unit 130 detects and decodes the video data to generate a video frame, crops an area specified by the area information of interest in the video frame, The data processing unit 120 controls the data processing unit 120 to expand the data.

(X, y), (x, y), the width (w) and the height (h), when the upper left corner is set as the reference point , y + h), and (x + w, y + h) rectangles with pixel coordinates as the region of interest. The control unit 130 controls the scaler 122 to generate a video frame according to the decoded video data in the video decoder unit 121, and then to scale and image the image of the portion recognized as a region of interest. Accordingly, the HD display device 300 displays not the original video frame but the framed image, that is, the region of interest.

Referring to FIG. 19, it is shown that an image 810 of a partial area in the entire video frame 800 is enlarged and output to a frame size.

In the above embodiments, the region of interest information is stored in the recording medium and provided to the recording medium reproducing apparatus 100, but the region of interest information may be provided in other ways. That is, the region of interest information may be provided through a separately provided server device.

20 is a block diagram showing the structure of a recording medium playback apparatus according to the third embodiment that provides a service area expansion service. Referring to FIG. 20, the recording medium reproducing apparatus includes a driver 110, a data processor 120, a controller 130, an interface 140, a storage 150, and a communication unit 160.

According to the third embodiment, the recording medium, that is, the disk 10, may store address information for a server apparatus capable of providing region information of interest.

Address information means address information for a server device providing an object for low resolution. The address information may be information such as a URL of the server device, an IP address, a server name, etc., in the form of an identifier or a JAVA program. A time point at which a movie is released using a recording medium in the form of an optical disc may be a time point not exceeding one month after the movie is screened in the theater. In such a short time, it may be difficult to determine the area of interest, and even if it is determined, it may be necessary to add or change the area of interest in the future. Therefore, after the optical disc is firstly released, the server apparatus can be used to provide the region of interest information.

When the address information is detected by the driver unit 110, the control unit 130 controls the communication unit 160 to access the server apparatus using the detected address information.

The communication unit 160 is a component for communicating with an external server apparatus using the address information stored in the disk 10. [ The communication unit 160 can access the server device using Wi-Fi, IEEE, Bluetooth, LAN, or the like. The server device may be a server device operated by a content creator, a producer of a recording medium playback device, a manufacturer of a display device, or the like. The control unit 130 receives the region of interest information about the server device through the communication unit 160 and stores the information in the storage unit 150. [ As described in the second embodiment, the region of interest information may include information on a reference coordinate value for designating a region of interest, a width, a width, and the like.

The control unit 130 controls the data processing unit 120 to enlarge the image of interest region of the video frame by frame size using the region of interest information stored in the storage unit 150. The video frame generated by the data processing unit 120 is provided to an external display device through the interface unit 140 and displayed.

FIG. 21 is a configuration diagram for explaining the operation of the recording medium reproducing apparatus according to the embodiment of FIG. When the UHD display apparatus 200 is connected as shown in FIG. 21A, the recording medium reproducing apparatus 100 decodes the UHD image data as it is and provides a video frame. Accordingly, the UHD display device 200 displays the original video frame as it is.

On the other hand, when the HD display device 300 is connected as shown in (b) and (c) of FIG. 21, the recording medium reproducing apparatus 100 can determine whether or not to clip according to the video output mode information. FIG. 21 (b) shows a case where the video output mode information includes a No value. 21 (b), the recording medium playback apparatus 100 provides the original video frame as it is even if the HD display apparatus 300 is connected.

FIG. 21 (c) shows a case where the video output mode information includes a Yes value. According to (c) of FIG. 21, the recording medium playback apparatus 100 accesses the server apparatus 1000 to receive the region of interest information. The recording medium reproducing apparatus 100 crops and outputs a part of the area according to the received ROI information.

22 is a diagram for explaining an internal configuration and operation of the recording medium reproducing apparatus according to the embodiment of FIG. 22, the communication unit 160 of the recording medium playback apparatus 100 receives the region of interest information from the server apparatus 1000 using the location information of the ROI stored in the disk 10, that is, the address information. The received region of interest information is provided to the video decoder unit 121. [ The video decoder unit 121 performs clipping on the region of interest for the video frame including the region of interest, based on the region of interest information. The framed region of interest image is enlarged to frame size and provided to the HD display device 300.

While the above-described various embodiments have been shown and described with reference to a recording medium playback apparatus that directly reproduces a recording medium, the various embodiments described above may be configured to receive and process signals including high-resolution content through a broadcasting network or other communication network May be implemented in various types of content processing apparatuses such as a signal receiving apparatus (e.g., a set-top box) and a television (i.e., a display apparatus).

23 is a block diagram for explaining an example of a configuration of a content processing apparatus implemented in the form of a broadcast receiving apparatus. Referring to FIG. 23, the content processing apparatus 100 includes a receiving unit 170, a data processing unit 120, a display unit 180, a control unit 130, and a storage unit 150. The same reference numerals are used for elements that are the same as or similar to those described in the other embodiments, and redundant explanations are omitted.

The receiving unit 170 may have a different configuration according to the broadcasting communication standard adopted in the country where the content processing apparatus is used. At present, there are various digital broadcasting standards such as ATSC (Advanced Television System Committee), DVB (Digital Video Broadcasting), ISDB-T (Integrated Services Digital Broadcasting-Terrestrial) For example, if the ATSC standard is employed, the receiver 170 may include an antenna, an RF downconverter, a demodulator, an equalizer, and the like.

The receiving unit 170 receives the signal including the high-resolution content through the broadcasting network and delivers the high-resolution content to the data processing unit 120.

The data processing unit 120 may include a demultiplexer, an RS decoder, a deinterleaver, and the like. The details of the signal transmission and reception for each broadcasting standard are specifically disclosed in the standard document of each broadcasting standard, so detailed descriptions and explanations are omitted.

The display unit 180 includes a display panel. The characteristics of the display panel are stored in the storage unit 150. Accordingly, in the present embodiment, the control unit 130 can directly grasp the characteristics of the display panel provided in the external apparatus, that is, the viewing environment using the information recorded in the storage unit 150 without having to grasp the viewing environment.

In the case where the display panel is for low resolution, the controller 130 controls the data processor 120 to perform operations according to the various embodiments described above, when it is determined that the high resolution content is received through the receiver 170. Accordingly, the video frame of the high-resolution content is displayed downscaled to fit the display size, and a video frame including the ROI is replaced with an image of the ROI.

The display unit 180 displays a video frame to which an object for low resolution is added through a display panel. The display unit 180 may further include a backlight unit and other driving circuits in addition to the display panel, but these are well known in the art, so detailed descriptions and explanations thereof are omitted.

As shown in FIG. 23, when high-resolution contents are provided through a broadcasting network, various additional information such as interest area information, notification information, video output mode information, and the like may be recorded and transmitted in various fields within a broadcast signal. For example, a Terrestrial Virtual Channel Table (TVCT), an Event Information Table (EIT), a Program Map Table (PMT), a metadata stream, and the like.

24 is a flowchart illustrating a content processing method according to an embodiment of the present invention. According to FIG. 24, when a recording medium is loaded (S1310), video data of high-resolution contents recorded on the recording medium is detected (S1320).

The recording medium playback apparatus grasps the viewing environment of the high-resolution contents. As a result of the determination, if the viewing environment is the low-resolution viewing environment (S1330), the recording medium playback apparatus confirms the ROI information (S1340), and replaces the video frame including the ROI with the ROI image (S1350 ). For convenience of explanation, the operation of generating a video frame may be referred to as a data processing step.

In the case where the bit stream of the video data is divided into a plurality of tile data as in the first embodiment, the region of interest information may include identification information of tiles corresponding to the region of interest. In this case, the data processing step may include a decoding step of selectively decoding only the corresponding tile data, and a scaling step of generating an image according to the decoded data in a frame size.

Alternatively, the region of interest information may be information that directly specifies the coordinates of the region. In this case, the data processing step may include decoding all the data of the entire video frame and then cramming the designated coordinate area to obtain the region of interest. The region of interest information may be recorded in the recording medium itself or may be input from an external server device or the like.

Accordingly, at least a portion of the video frame transmitted to the display device may be replaced with the region of interest image and transmitted (S1360).

On the other hand, if the viewing environment is not low resolution, the video data of the high-resolution content is processed as it is and a video frame is generated (S1370). The generated video frame is provided to the display device (S1360).

24, a method performed by a recording medium playback apparatus implemented in the form of a recording medium playback apparatus has been described. However, it is needless to say that the recording medium playback apparatus may be implemented in the form of a broadcast receiving apparatus such as a TV as described above.

In the above-described embodiments, a case where a disc is used as an example of a recording medium has been described. Specifically, a large-capacity recording medium such as a Blu-ray disc, a holographic disc, or the like can be used to store UHD contents. Various information can be recorded on the recording medium as described above according to the embodiment.

The storage area of the recording medium may be divided into a plurality of storage areas according to the type of information to be recorded. For example, the recording medium may include a first storage area for storing high-resolution content, a second storage area for storing type information indicating a type of high-resolution content, a region of interest representing a region of interest included in a video frame of high- A fourth storage area for storing information for notifying whether the ROI exists, a fifth storage for storing video output mode information for allowing the video frame to be changed using the ROI, Region. &Lt; / RTI &gt;

In a case where the area information of interest is provided by an external server device as described above, a seventh storage area in which address information of the server device is recorded may be included in place of the fourth and fifth storage areas.

In addition, the recording medium playback apparatus may provide an object adjustment service. Hereinafter, an embodiment for providing an object adjustment service will be described in detail.

&Lt; Embodiment to provide object adjustment service >

25 is a block diagram showing the configuration of a recording medium playback apparatus according to an embodiment that is implemented in the form of a recording medium playback apparatus and provides an object adjustment service. 25, the recording medium reproducing apparatus 100 includes an input unit 105, a data processing unit 120, a control unit 130, a driver unit 110, an interface unit 150, and a storage unit 160.

The input unit 105 is configured to receive high-resolution contents. The input unit 105 may be implemented to receive the high-resolution content processed by the driver unit 110, or may receive the high-resolution content transmitted from the external broadcasting station or the server apparatus.

The data processing unit 120 processes the high-resolution content input through the input unit 105 to generate a video frame.

The driver unit 110 is a component for driving the recording medium to detect data when the recording medium is mounted.

The controller 130 controls the driver 110 to detect high-resolution contents from the recording medium when it is confirmed that the recording medium on which the high-resolution contents are recorded is mounted on the driver 110. [

The high-resolution content detected by the driver unit 110 is input to the input unit 105, and the input unit 105 provides the high-resolution content to the data processing unit 120. The data processor 120 generates a video frame of high-resolution content under the control of the controller 130 as described above, and then constructs a low-resolution object and adds it to the video frame. In the case of a Blu-ray Disc, video data compressed with a codec of MPEG-2, H.264 / MPEG-4 AVC, or VC-1 standard can be stored. The data processing unit 120 may decode video data using the codec to generate a video frame.

The control unit 130 controls the input unit 105 and the data processing unit 120 to process high-resolution contents. Specifically, the control unit 130 confirms the output resolution of the display panel for displaying the video frame. When the recording medium reproducing apparatus 100 is implemented in the form of a recording medium reproducing apparatus, the control unit 130 confirms the output resolution of the display panel included in the external display apparatus to which the recording medium reproducing apparatus 100 is connected.

On the other hand, when the recording medium reproducing apparatus 100 is implemented in the form of a display device including up to the display panel, the output resolution is confirmed based on its own characteristic information.

If the output resolution of the display panel is low, the controller 130 downscales the video frame of the high-resolution content, constructs an object such as a subtitle or a menu to be added to the video frame as a low resolution object, And controls the data processing unit 120 to process the data. As an object for low resolution is provided, the subtitles can be displayed as large as the user can identify.

Here, the low resolution means a resolution relatively lower than the resolution of the content. For example, if the content is UHD content having a resolution of about 4000 (3840x2160) to 8000 (7680x4320), the output resolution of the HD display device having the resolution of 1920x1080 corresponds to the lower resolution. Hereinafter, the high resolution content is UHD content and the low resolution display panel or device is a display panel or device having HD resolution. However, the present invention is not limited thereto and the resolution of the content may be larger than that of the display panel or the device The present embodiment can be applied as it is.

A video frame to which the low resolution object is added by the data processing unit 120 is provided to the display panel through the interface unit 150 and displayed.

The interface unit 150 is a component for being connected to a display device having a display panel. Specifically, the interface unit 150 may be implemented with an HDMI (High Definition Multimedia Interface).

Accordingly, even when the high-resolution content is displayed through the relatively low-resolution display panel, the size of the subtitle or the menu can be prevented from being reduced in proportion to the resolution, so that the user can easily identify the size.

The storage unit 160 is a component for storing an O / S, various programs, data, and the like required for the operation of the recording medium playback apparatus 100. The storage unit 160 may also store information such as the output resolution of the display device to which the recording medium reproducing apparatus 100 is connected. The output resolution information may be received from the display device 300 and stored in the storage unit 160. That is, the control unit 130 may also store various data received from the display device through the interface unit 150 in the storage unit 160.

The control unit 130 may receive the display characteristic information from the display device through the interface unit 150. The display characteristic information may include various information such as the output resolution of the display panel provided in the display device, the pixel count, the display size, the viewing distance, the device model name, and the like, as described in the other embodiments. Since the display characteristic information has been described in detail in the above-mentioned section, a duplicate description will be omitted.

The control unit 130 stores the display characteristic information in the storage unit 160 and uses the display characteristic information. If the display apparatus and the recording medium playback apparatus are connected in the same manner as HDMI, display characteristic information such as screen size information can be automatically obtained and stored as viewing environment information in the recording medium playback apparatus. On the other hand, when the analog connection method is used or the display characteristic information can not be obtained for other reasons, the viewing environment information may be generated at the time of manufacture or at a user setting value and stored in the storage unit 160.

The control unit 130 can confirm the output resolution of the display panel on which the video frame of the high resolution content is to be displayed by using the display characteristic information stored in the storage unit 160. [ Meanwhile, according to another embodiment of the present invention, the recording medium playback apparatus 100 may provide a UI (User Interface) capable of determining an output resolution. The UI can be displayed by a touch screen panel, a display device, or the like provided in the recording medium playback apparatus 100. The output resolution input by the user via this UI is stored in the storage unit 160. [

Meanwhile, a method of generating an object for a low resolution can be variously implemented according to an embodiment. For example, the low-resolution object itself may be stored separately from the high-resolution object in the recording medium, the low-resolution object may be provided from another source device or another medium, It is also possible to use it by converting it for low resolution. The configuration and operation of the data processing unit 120 may be changed according to these embodiments. Hereinafter, various embodiments for generating a low resolution object will be described in detail.

26 is a view for explaining the operation of the recording medium reproducing apparatus according to the first embodiment for providing the object adjustment service.

Referring to FIG. 26, a UHD image, a UHD subtitle, and an HD subtitle are stored in the disc 10. UHD image means high resolution content, UHD caption means high resolution object and HD caption means low resolution object. As described above, the object may include various graphic menus in addition to the captions, but for the sake of convenience of explanation, the processing of the captions will be described below.

When the disc 10 is loaded in the recording medium reproducing apparatus 100, the recording medium reproducing apparatus 100 confirms the display characteristic information of the connected display apparatus. 26 (a) shows a case connected to the UHD display device 200, and FIG. 26 (b) shows a case connected to the HD display device 300. FIG.

When the UHD display apparatus 200 is connected as shown in FIG. 26A, the controller 130 of the recording medium reproducing apparatus 100 transmits the UHD subtitle 220 to the image frame 210 having the UHD resolution In addition, Accordingly, the user can view the high-resolution content through the wide screen (approximately 110 inches) of the UHD display device 200. [

The UHD image 210 is produced in accordance with the screen size of the UHD display device 200. However, the viewer generally watches the UHD display device 200 at the same distance as when the HD display device 300 is viewed. Since the screen size increases under the same viewing distance, a user viewing through the UHD display device 200 can secure a wide viewing angle (approximately 55 degrees). Assuming that the viewing distance is the same as that of the HD display device 300, it is impossible to make a subtitle or a menu four times larger because the screen is enlarged. In other words, the subtitles 220 are still sized to be viewed comfortably at the same viewing distance as the HD display device.

Therefore, when a UHD image and a subtitle or a menu for UHD are output from the HD display device 200, the subtitle or menu is reduced to about 1/4, which makes reading uncomfortable. However, when the caption or menu is adjusted for low resolution by the recording medium reproducing apparatus 100, the size can be appropriately maintained.

26 (b) shows a case in which the HD display device 300 is connected. In this case, the recording medium reproducing apparatus 100 downscales the UHD image to match the display size of the HD display device 300. Then, the HD subtitle is mixed with a downscaled video frame and supplied to the HD display device 300. The HD display device 300 directly receives the uncompressed video frame through HDMI and outputs it on the screen. As a result, although the video frame 2610 of the UHD image is reduced in size to the HD size, the subtitle is not reduced to the same size as the original subtitle because the HD subtitle 2620 is used. Thus, the user can easily identify the subtitles.

Various information can be stored in the disc 10, that is, the recording medium, so that the recording medium reproducing apparatus 100 can perform the above-described operation.

More specifically, in the present embodiment, the high-resolution content, the type information indicating the type of the high-resolution content, the first object, the first navigation program for using the first object, the second object, A second navigation program for using the object can be stored.

High-resolution content means content such as the UHD image described above. The type information is information for informing whether the contents are UHD contents or HD contents.

As described above, the recording medium reproducing apparatus 100 requires display characteristic information in order to grasp whether the screen for displaying the content is a high-resolution screen or a HD-oriented screen. The display characteristic information can be regarded as information necessary for selecting and outputting an object suitable for the screen, but the type information can be selectively recordable information.

The first object means an object for high resolution, i.e., a UHD object, and the second object can be an object for low resolution, i.e., an HD object. Each of the first and second objects may include at least one of a caption and a menu. Such objects may be stored in the form of image data, but are not necessarily limited thereto. That is, it may be stored in text form.

The first navigation program is a program for navigating the first object so that the first object is an object for a high resolution so that the controller 130 can use it. The second navigation program is a program for recognizing that the second object is an object for a low resolution, Means a program that navigates for use.

The controller 130 can determine the type of contents of the disc 10 using the type information. The UHD display device 200 can recognize the output resolution based on the display characteristic information of the display device 200 or 300 so that the content of the type recorded on the disc 10 can be output normally, 300).

If the connected display device is the UHD display device 200, the controller 130 selects and processes the first object using the first navigation program. On the other hand, if the connected display device is the HD display device 300, the second object is selected and processed using the second navigation program. The navigation program refers to a program that a content creator creates and outputs a UHD object or an HD object by selecting it using a navigation command for disc management. Instead of the navigation program, the content creator may provide navigation information including an identifier for distinguishing whether each caption is for HD or UHD. Therefore, according to another embodiment of the present invention, the first and second navigation information may be recorded on the disc 10 instead of the first and second navigation programs.

On the other hand, as described above, since the type information is option information that can be selectively described, the content creator may not record the type information of the content.

If the content creator does not record the type information of the content, the control unit 130 may perform the above-described operations on the objects other than the image content based on the information reflecting the characteristics of the display device.

The control unit 130 controls the data processing unit 120 to add a subtitle for HD or a menu for HD to a video frame without discriminating whether the content is UHD or HD. On the other hand, when the UHD display apparatus is connected, the control unit 130 controls the data processing unit 120 to select an object such as a caption or a menu for UHD and add the selected object to a video frame. As a result, if there is no type information, no special processing is performed on the image, and only the object is adjusted to fit the screen size.

Fig. 27 shows a configuration for explaining the operation of the recording medium reproducing apparatus according to the above-described embodiment. 27, the data processing unit 120 of the recording medium reproducing apparatus 100 includes a scaler 121 and a mixer unit 122. [

The scaler 121 is a structure for scaling a video frame of high resolution content stored in the disk 10. [ The mixer unit 122 is configured to selectively detect one of the first object and the second object stored in the disc 10 and mix the selected object in the scaled video frame.

When the display unit is connected through the interface unit 150, the control unit 130 receives the display characteristic information and stores the received display characteristic information in the storage unit 150. [ As described above, the display characteristic information may be EDID or the like. The control unit 130 controls the scaler 121 to downscale the video frame of the high resolution content according to the output resolution of the display device 300. When the HD display device 300 is connected to the display device 300,

Then, the control unit 130 loads the second navigation program stored in the disk 10 into the storage unit 150. The control unit 130 may include a microcomputer or a CPU, and the storage unit 150 may include various memories such as a ROM, a RAM, a flash memory, an HDD, and the like. The control unit 130 detects the second object from the storage location of the second object using the second navigation program and then controls the mixer unit 122 to mix the processed object with the processed video frame in the scaler 121. [ The interface unit 140 transmits the video frame in which the second object is mixed by the mixer unit 122 to the display device 300. [ Accordingly, the display apparatus 300 can display a screen to which the low resolution object 2620 is added in the downscaled video frame 2610 of the high resolution content.

On the other hand, if it is determined that the UHD display device is connected, the controller 130 controls the scaler 121 to scale the UHD image frame according to the size of the display device, and transmits the first object, i.e., the UHD object, And controls the mixer unit 122 to mix.

As described above, according to an embodiment of the present invention, objects such as subtitles and menus are provided for high resolution and low resolution, respectively, and are stored in the disc 10. The recording medium playback apparatus 100 appropriately selects such an object according to the output resolution, so that the discrimination power can be increased.

On the other hand, there may be a case where the storage capacity of the disk 10 is insufficient to store both the object for high resolution and the object for low resolution. Accordingly, it may be implemented as an embodiment that provides a low resolution object using a separate server device.

28 is a view for explaining the operation of the recording medium reproducing apparatus according to the second embodiment for providing the object adjustment service. In the embodiment of FIG. 28, high-resolution content, type information indicating the type of high-resolution content, object for high resolution, and address information can be stored in the recording medium. Address information means address information for a server device providing an object for low resolution. The address information may be stored in the form of a JAVA program or identification information such as a URL of the server device, an IP address, a server name, or the like. A time point at which a movie is released using a recording medium in the form of an optical disc may be a time point not exceeding one month after the movie is screened in the theater. In such a short time, it may be difficult to create subtitles or menus corresponding to various display environments. Therefore, after the optical disc is firstly released, the server apparatus can be used to provide a caption or a menu.

FIG. 28A shows a state in which a recording medium reproducing apparatus for reproducing UHD contents is connected to the UHD display apparatus 200. FIG. In this case, the UHD subtitle stored in the disc 10, that is, the object for high resolution is used as it is. Accordingly, the UHD display apparatus 200 displays the UHD image frame 210 to which the UHD subtitle 220 is added.

28 (b) shows a state in which the recording medium reproducing apparatus for reproducing the UHD contents is connected to the HD display apparatus 300. FIG. In this case, the recording medium reproducing apparatus 100 accesses the server apparatus 1000 by using the address information stored in the disk 10, and receives the low resolution object. The received low resolution object is added to the downscaled video frame and provided to the HD display device 300. Accordingly, an HD subtitle 2620 and a video frame 2610 corresponding to the output resolution and display size of the HD display apparatus 300 are displayed.

Fig. 29 shows an example of the internal structure of the recording medium reproducing apparatus according to the embodiment of Fig. 29, the recording medium reproducing apparatus 100 may further include a communication unit (not shown) in addition to the input unit 105, the data processing unit 120, the control unit 130, the driver unit 110, the interface unit 140, 160, and an object storage unit 170.

The communication unit 160 is a component for communicating with an external server apparatus using the address information stored in the disk 10. [ The communication unit 160 can access the server device using Wi-Fi, IEEE, Bluetooth, LAN, or the like. The server device may be a server device operated by a content creator, a producer of a recording medium playback device, a manufacturer of a display device, or the like.

When the low resolution object is downloaded from the server device, the communication unit 160 stores the low resolution object in the object storage unit 170. Although the object storage unit 170 is shown separately from the storage unit 150 in FIG. 29, the object storage unit 170 may be included in the storage unit 150. FIG.

In addition, the data processing unit 120 may include a scaler 121 and a mixer unit 122. The control unit 130 controls the communication unit 160 to receive the low resolution object from the server device 1000 using the address information when the output resolution is determined to be low by the display characteristic information. Accordingly, when the low resolution object is received and stored in the object storage unit 170, the scaler 121 is controlled to downscale the video frame of the content. Then, the mixer unit 122 may be controlled to add the low resolution object stored in the object storage unit 170 to the downscaled video frame.

On the other hand, if the output resolution is confirmed to be high, the control unit 130 controls the mixer unit 122 to mix the UHD subtitle stored on the disc 10 into the UHD image frame.

Accordingly, an object such as a subtitle, a menu, and the like can be displayed in a form corresponding to the output characteristic of the display device.

On the other hand, unlike the above embodiments, an object for a low resolution can be generated by scaling an object for a high resolution.

30 is a view for explaining the operation of the recording medium reproducing apparatus according to the third embodiment for providing the object adjustment service. According to the present embodiment, the recording medium 10 such as a disc can store high resolution content, type information indicating the type of high resolution content, object for high resolution, and subtitle or menu output mode information .

The object output mode information is information indicating whether scaling is permitted for the object for high resolution. That is, the object output mode information may include a bit value corresponding to Yes or a bit value corresponding to No. The object output mode information may be determined by the content creator's intention. That is, some producers may not desire to judge and process the difference between the content and the viewing environment in the recording medium reproducing apparatus 100 by itself. In consideration of this case, it is necessary to provide a means for the creator to control the scaling of the object so that the object output mode information plays such role.

30 (a) shows a state connected to the UHD display device 200. FIG. In this case, the control unit 130 adds the UHD caption 220 to the UHD image frame 210 without checking the object output mode information, and provides the UHD caption 220 to the UHD display apparatus 200.

30 (b) and 30 (c) show a state connected to the HD display device 300. FIG. In this case, the control unit 130 confirms the object output mode information. If the object output mode information is No, the controller 130 downscales the object 2620 for the high resolution by a factor of 4, and then provides the added object to the HD display device 300. In this case, as shown in Fig. 30 (b), the subtitles are scaled at the same rate as the image frame, and thus are displayed in a very small size.

On the other hand, if the object output mode information is Yes, the controller 130 downscales the object for high resolution in consideration of the output resolution and the display size of the HD display device 300. In this case, as shown in FIG. 30C, the caption 2620 is converted into an appropriate size, added to the downscaled video frame 2610, and provided to the HD display device 300.

31 is a diagram showing an internal configuration of a recording medium reproducing apparatus 100 according to the embodiment shown in FIG. Referring to FIG. 31, the data processing unit 120 includes a first scaler 121, a mixer unit 122, and a second scaler 123.

The first scaler 121 is a structure for scaling a video frame of high resolution content. The second scaler 123 is a configuration for scaling an object for high resolution. The mixer unit 122 mixes the video frame output from the first scaler 121 and the object output from the second scaler 123.

The control unit 130 confirms the object output mode information when the output resolution of the display panel is confirmed to be low by the display characteristic information. If the object output mode information includes a Yes value, the controller 130 determines that scaling of the object is permitted. Accordingly, the data processor 120 controls the downscaling and mixing of the video frames of the high resolution content and the high resolution object, respectively. The scaling ratio of the object for high resolution can be determined based on the display size of the display device and the object size. This will be described in detail in the following drawings.

On the other hand, if the object output mode information includes a value of No, the controller 130 determines that scaling control for the object is not allowed. Accordingly, the data processing unit 120 is controlled to downscale the video frames of the high-resolution content and mix the high-resolution objects intact.

When downscaling a high resolution object, the controller 130 may adjust the downscaling ratio such that the object is not downscaled too much.

32 is a diagram for explaining a method of adjusting a scaling ratio for an object in consideration of a display size. The control unit 130 of the recording medium playback apparatus 100 may perform a scale control operation on an object such as a caption or a menu. The scale control operation means an operation of scaling the scaling ratio while changing the scaling ratio so that the content producer can see the screen of the HD display device as much as possible by using the size and position information of the subtitle provided by the content producer on the basis of the UHD screen.

When the downscaling ratio is set to be as small as 4, the subtitle 2620 is displayed very small, as shown in FIG. 32 (a). On the other hand, if the downscaling ratio is set too small, the width of the caption for high resolution is wider than the width of the HD display device 200, so that a part of the caption may be cut off. Therefore, the controller 130 can adjust the downscaling ratio by comparing the actual width of the high-definition subtitle and the horizontal width of the HD display device 200. [

If the width of the subtitle 220 in the UHD display device 200 is x as shown in FIG. 32, the controller 130 may set the downscaling ratio to 1: 1 if x is sufficiently small. As a result, the HD display device 200 can view subtitles of actual size as they are. However, if x is large enough, the subtitles are scaled with a downscaling ratio of y / x and added to the video frame. The size of y may be set to a value slightly smaller than the width of the HD display device 300. 32 (b) shows a state in which y is set to about 1080 pixels. Accordingly, the entire subtitle can be displayed in a size that can be easily identified by the user without being cut off.

As described above, the control unit 130 can adaptively determine the scaling ratio in consideration of the display size and the object size.

In the above-described embodiments, a case where a disc is used as an example of a recording medium has been described. Specifically, a large-capacity recording medium such as a Blu-ray disc, a holographic disc, or the like can be used to store UHD contents. Various information can be recorded on the recording medium as described above according to the embodiment. Although it has been described in the first embodiment that the first and second navigation programs can be stored, it is also possible to implement the embodiment in which the navigation information such as the identifier is stored and provided to the control unit 130 instead of the program form, same.

The storage area of the recording medium may be divided into a plurality of storage areas according to the type of information to be recorded. For example, the recording medium may include a first storage area in which high resolution content is stored, a second storage area in which type information indicating a type of high resolution content is stored, a third storage area in which an object for high resolution is stored, And a fourth storage area where information is stored.

The additional information may vary depending on the embodiment. For example, the additional information may include a first navigation program for notifying an object for a high resolution or a navigation program for providing navigation information, an object for a low resolution, a second navigation program for notifying an object for a low resolution, Address information on the server device, and object output mode information indicating whether or not scaling control is performed on an object for a high resolution, according to each embodiment. In addition, the recording medium may further store metadata indicating the type of each information stored therein, an identifier for each piece of information, and a location of a storage area where each piece of information is stored.

33 shows a stream structure of a recording medium in a case where an object for a low resolution such as an HD subtitle or an HD menu is stored in the recording medium according to the first embodiment.

33, the recording medium 10 according to the embodiment of the present invention includes UHD subtitle data 1351, UHD menu data 1381, and UHD menu data 1350 in the subtitle stream # 2 1350, menu stream # 2 1380, And further includes caption data 1352 for HD and menu data 1382 for HD. Therefore, the recording medium playback apparatus can selectively output the UHD object or the HD object according to the viewing environment in the subtitle stream # 2 (1350) and the menu stream # 2 (1380) of the recording medium (b).

FIG. 34 shows an example of an information structure of a recording medium showing a case where a low-resolution object exists as shown in FIG.

According to FIG. 34, information such as "is_Subtitle_for_HD_Viewing" indicating whether or not the subtitle for HD watching environment exists exists for the UHD playitems is provided in the play list layer (c) of the recording medium.

In the recording medium playback apparatus having the configuration as shown in Fig. 27, captions and menus can be processed by using the recording medium having the data structure as shown in Figs. 33 and 34. Fig.

33 and 34 will be described in detail. First, it is assumed that the current play item # 0 is played back. First, the user can select the subtitle stream number 2 through the remote controller or other input means. In this case, the recording medium reproducing apparatus 100 selects the subtitle stream number 2 according to the user's selection. The recording medium playback apparatus 100 determines whether the current output state is the HD viewing environment. In the presented example, the viewing environment is HD. The method of judging the viewing environment has been described above, so duplicate description will be omitted.

In this case, the recording medium reproducing apparatus 100 analyzes the STN_Table of the play item # 0 in the 00000.mpls file to confirm that the stream ID of the subtitle to be reproduced is 1. If the viewing environment value is UHD, the operation of the recording medium reproducing apparatus for subtitle selection is completed here. However, if the HD viewing environment is the same as the above example, the next step is performed.

In other words, check the UHD extension of the 00000.mpls file to see if there is any subtitles used in the HD viewing environment. Then, the stream ID to be used for reproduction is finally determined. The recording medium reproducing apparatus 100 determines whether the "is_Subtitle_for_HD_Viewing" information has a Yes value in the play list information structure, and if Yes, it determines to reproduce the stream ID 2 linked with this information. On the other hand, if No, it is decided to reproduce the stream ID 1. In Fig. 34, "is_Subtitle_for_HD_Viewing" for stream ID 2 has a value of "Yes", so stream ID 2 is reproduced. As a result, the HD subtitle is added to the video frame and output.

On the other hand, as described above, an object such as a caption or a menu may be produced as a bitmap and stored in a recording medium, but not necessarily limited to, a text format.

35 shows an example of a stream structure of a recording medium storing subtitles and menus produced in text form. 35, a recording medium 10 according to an embodiment of the present invention includes a video stream 1510, audio streams # 1 and # 2 1520 and 1530, a subtitle stream # 1 1540, (1560) is stored in the same manner as the conventional method, but there is a difference in the subtitle stream # 2 (1550) portion.

That is, the conventional recording medium includes only the UHD text data 1552 and the UHD style data 1551 in the subtitle stream # 2 (1550), but the recording medium 10 according to the embodiment of the present invention stores these data And further includes style data 1553 for HD.

The UHD text data 1552 includes a code value of a character such as a character or a numeral constituting a caption. Style data indicates the style in which the corresponding text data is output. When the UHD display apparatus 200 is connected, the recording medium reproducing apparatus 100 processes the UHD text data 1552 using the UHD style data 1551 to generate a UHD subtitle. On the other hand, when the HD display device 300 is connected, the UHD text data 1552 is processed using the HD style data 1553 to generate the HD subtitle.

The information structure as shown in FIG. 34 can also be used in such a recording medium. That is, the control unit 130 of the recording medium playback apparatus 100 uses the HD style data 1553 when "is_Subtitle_for_HD_Viewing" is a Yes value and the viewing environment is HD, otherwise, the style data 1551 for UHD is used, To form a subtitle.

Although only the subtitle stream is shown in Fig. 35, the menu stream can also be processed in a manner similar to the subtitle stream.

As described above, the operation of the recording medium reproducing apparatus according to various embodiments of the present invention for providing the object adjustment service and its detailed configuration have been described in detail. Hereinafter, a content processing method in the recording medium reproducing apparatus according to each embodiment will be briefly described using a flowchart.

36 is a flowchart for explaining a content processing method in a recording medium playback apparatus implemented in the form of a recording medium playback apparatus. Referring to FIG. 36, when a recording medium is loaded (S1610), the viewing environment of the display device connected to the recording medium reproducing apparatus is checked to determine whether the output resolution is low (S1620).

If the resolution is low, the high-resolution content is downscaled and the low-resolution object is added (S1630). Objects for low resolution can be obtained in various ways as described above. The recording medium playback apparatus provides a video frame to which a low-resolution object is added to the display apparatus (S1650).

On the other hand, if the output resolution is a high resolution corresponding to the content processing, the high resolution object is added to the high resolution video frame (S1640), and the object is provided to the display device (S1650).

In this manner, it is possible to display subtitles and menus of a form suitable for the resolution of the display apparatus, and thus the discrimination power can be improved.

As described above, the method of obtaining an object for a low resolution can be variously changed according to an embodiment. Hereinafter, a frame generation step of generating an object for a low resolution and mixing it into a video frame will be described in detail for each of the embodiments.

First, FIG. 37 is a flowchart for explaining a processing method according to the first embodiment for providing an object adjustment service. 37, the recording medium reproducing apparatus demultiplexes the high-resolution contents to detect video data, decodes the video data to generate a video stream, downscales the generated video stream, and generates a size (S1710). &Lt; / RTI &gt;

Then, the low resolution object stored in the recording medium is detected using the navigation program or the navigation information stored in the recording medium (S1720). When the navigation program is used, the control unit 130 of the recording medium playback apparatus loads the navigation program into the RAM, executes the program, and can detect the object according to the program. When the navigation information is used, the controller 130 analyzes the navigation information to identify the location where the low resolution object is stored, and then reads the object from the location.

The recording medium playback apparatus 100 mixes the detected low resolution object into a video frame (S1730). A buffer or the like may be used in the mixing process, but a process such as mixing is a general process, so that the illustration and description of these additional components are omitted in the above-described embodiments.

38 is a flowchart for explaining a processing method according to the second embodiment for providing an object adjustment service. Referring to FIG. 38, after downscaling a video frame of high resolution content (S1810), the server device is accessed using the address information stored in the recording medium (S1820). The server apparatus can transmit data for the low resolution object corresponding to the high resolution content. The recording medium playback apparatus receives and stores the transmitted low resolution object (S1830), detects the object stored at the point in time when each object should be displayed, and mixes the detected object in the video frame (S1840).

39 is a flowchart for explaining a processing method according to the third embodiment for providing an object adjustment service. According to FIG. 39, the video frame of high resolution content is downscaled (S1910), and object output mode information stored in the recording medium is confirmed (S1920). If the scaling control is permitted (S1930), the recording medium playback apparatus scales the high resolution object according to the scaling ratio set in accordance with the display size and the object size (S1940). The principle and method of setting the scaling ratio have been described in detail with reference to FIG. 32, and thus redundant description will be omitted. The recording medium playback apparatus 100 mixes the scaled object into a video frame (S1950).

On the other hand, if the scaling control is not permitted (S1930), the recording medium reproducing apparatus downscales the high resolution object according to the output resolution (S1960). In this case, if the UHD content is connected to the HD display device, the size of the subtitle or menu is reduced by about 1/4.

37 through 39 illustrate and describe the processing for a video frame as being proactive rather than the processing for an object, the order of processing may vary from product to product. For example, object processing may be performed first, video frame processing may be performed, and both processes may be performed in parallel. 37 to 39, the case where the low resolution display device is connected has been described as a reference. The operation when the high-resolution display device is connected has been described in detail in the above-mentioned section, so that duplicate description will be omitted.

Although the configuration and operation of the recording medium reproducing apparatus embodied in the form of a recording medium reproducing apparatus have been specifically described in the above-mentioned section, the recording medium reproducing apparatus itself may be implemented as a display apparatus. For example, it can be implemented as a TV. In this case, the high-resolution content can be received through the broadcast network without being reproduced through the recording medium.

40 is a block diagram showing a configuration of a recording medium playback apparatus implemented in the form of a display device. Referring to FIG. 40, the recording medium reproducing apparatus 100 includes an input unit 105, a data processing unit 120, a control unit 130, a receiving unit 195, and a display unit 190.

The receiving unit 195 may have a different configuration according to the broadcasting communication standard adopted in the country where the recording medium reproducing apparatus is used. At present, there are various digital broadcasting standards such as ATSC (Advanced Television System Committee), DVB (Digital Video Broadcasting), ISDB-T (Integrated Services Digital Broadcasting-Terrestrial) For example, if the ATSC standard is employed, the receiving unit 195 may include an antenna, an RF downconverter, a demodulator, an equalizer, and the like. The data processing unit 120 may include a demultiplexer, an RS decoder, a deinterleaver, and the like. The details of the signal transmission and reception for each broadcasting standard are specifically disclosed in the standard document of each broadcasting standard, so detailed descriptions and explanations are omitted.

The receiving unit 195 receives the signal including the high-resolution content through the broadcasting network and inputs the received signal to the input unit 105.

The input unit 105 transmits the high-resolution content to the data processing unit 120.

The display unit 190 includes a display panel 191. Therefore, in this embodiment, the control unit 130 can directly grasp the characteristics of the display panel provided in the external apparatus, using the specification information recorded in the internal memory, the storage unit, or the like without having to grasp the viewing environment.

When the display panel 191 is for low resolution, the controller 130 controls the data processor 120 to perform operations according to various embodiments described above, when it is determined that the high resolution content is received through the receiver 195.

The display unit 190 displays a video frame to which an object for low resolution is added through a display panel. The display unit 190 may further include a backlight unit, a driving circuit, and the like in addition to the display panel, but it is well known in the art, so detailed illustration and description are omitted.

40, when the high-resolution contents are provided through the broadcasting network, the additional information as described above may be recorded in various fields in the broadcasting signal and transmitted. For example, in the case of a low resolution object, it can be transmitted in an independent elementary stream (ES) format like a video stream, an audio stream, and high-resolution subtitle data, and other information can be transmitted through Terrestrial Virtual Channel Table (TVCT) Table), PMT (Program Map Table), metadata stream, and the like.

As described above, when the recording medium 10 is implemented as a Blu-ray disc, data must be recorded in a form compatible with Blu-ray standards in order to provide such a service. Such data can be recorded in various portions within the recording medium 10. [ Hereinafter, the syntax and recording method of such data will be described in detail.

&Lt; Recording of additional data &

As described above, the recording medium 10 may be embodied as a Blu-ray disc. 10, the Blu-ray Disc is composed of four layers such as an index table 1110, a movie object / BD-J object 1120, a play list 1130, and a clip 1140.

Of these, the STN table is recorded in the play list file. In the playlist file, the ID1 value and the ID2 value of the extension data in ext_data_entry () can be set to 0x000Y and 0x000Z respectively to recognize the extension data as STN_table_UHD (). The presence of STN_table_UHD () indicates that the UHD video is present in the playlist.

If the primary video for the playlist is an MPEG-2 video stream, an MPEG4 AVC stream, or a VC-1 video stream, STN_table_UHD () may not be present in the playlist.

STN_table_UHD provides the following information.

&Lt; RTI ID = 0.0 &gt; - &lt; / RTI &gt; first information to define a coded structure of a video sequence to perform a uniform trick play operation on the players

The second information that allows you to watch UHD videos comfortably in HD viewing environments by defining areas of interest.

▶ Third information that allows non-video visual content (ie, subtitles and menus) to be changed so that non-video visual content can be viewed comfortably in an HD viewing environment.

That is, the first information is information used in embodiments that provide trick play among the various embodiments described above, the second information is information used in embodiments providing the ROI service, Means information used in embodiments providing services.

41 shows an example of the syntax of the STN_table_UHD table that provides the above-described various additional information.

41, in STN_table_UHD, video output mode information (video_output_mode) 4110, information indicating whether there is a region of interest (is_there_interesting_region) 4120, number and number of tiles corresponding to a region of interest Num_of_tiles_of_IR, Tile_num_of_IR [t_id (Is_subtitle_for_HD_viewing_env) 4150 indicating whether it is a caption for HD watching, and information (Is_IG_for_HD_viewing_env) 4160 indicating whether it is a menu for HD viewing or the like can be expressed by various bit values.

In FIG. 41, STN_table_UHD () defines the following stream number for each loop of the pi_id value.

● Primary_video_stream_number [pi_id]

● PG_textST_stream_number [pi_id]

● IG_stream_number [pi_id]

The value of Primary_video_stream_number [pi_id] can be calculated as Primary_video_stream_id + 1. The value of PG_textST_stream_number [pi_id] can be calculated as PG_textST_stream_id + 1, and the value of IG_stream_number [pi_id] can be calculated as IG_stream_id + 1.

Here, one PG TextST stream entry (entry defined in the STN table) and an associated PG TextST stream for HD viewing environment have the same stream number value and one IG stream entry (i.e., an entry defined in the STN table) And the associated IG stream for the HD viewing environment have the same stream number value.

41, the video output mode information (video_output_mode) 4110 may be represented by various bits such as 0 or 1. If the video output mode information (video_output_mode) 4110 is 1, the region of interest may be extracted and output to the display device. Video output mode information (video_output_mode) 4110 is valid on the play list. In order to distinguish whether the current viewing environment is UHD or HD, the horizontal display size of the PSR23 (Player Status Registers 23) is a standard. PSR23 is useful for Profile 5 player and Profile ZZ player.

Is_there_interesting_region 4120 is information for notifying whether or not a region of interest exists. If there is a region of interest in the frame in the play item, Is_there_interesting_region 4120 is recorded as 1.

Num_of_tiles_of_IR 4130 is information indicating how many tiles are present in the ROI, and Tile_num_of_IR [t_id] 4130 and 4140 is information indicating a tile number in the ROI.

If the PG TextST stream of PG_textST_stream_id is prepared to be displayed in the HD viewing environment, Is_subtitle_for_HD_viewing_env information 4150 is set to 1, and if the IG stream of IG_stream_id is prepared to be displayed in the HD viewing environment, Is_IG_for_HD_viewing_env information 4160 is set to 1 Lt; / RTI &gt;

Meanwhile, the various information as described above may be included in the clip information file recorded on the Blu-ray Disc.

42 shows the syntax of CPI_UHD () in the clip information file. In ext_data_entry (), the ID1 value and the ID2 value of the extension data can be set to 0x000x and 0x000y, respectively, to identify the extension data by CPI_UHD ().

If the corresponding clip AV stream file contains an HEVC video stream, CPI_UHD () may be present in ExtensionData () of the clip information file. Otherwise, there may be no CPI_UHD () in ExtensionData () of the clip information file.

In FIG. 42, length is composed of a 32-bit field indicating the number of bytes of CPI_UHD () from immediately after the length field to the end of CPI_UHD ().

The CPI_type may be set to one, indicating that the type of the CPI database is EP_map_type.

The number_of_frames_in_GOP indicates the number of frames in the GOP. If the video sequence is a field format, the complementary field pair is considered a frame and may be less than or equal to the maximum number of video frames displayed in the GOP. The number_of_frames may not change within a single clip.

is_Br_present can be set to 1 if a Br frame is present in the GOP. Once Br_present is set to 1, all GOPs in the sequence can have Br frames.

The number_of_B_frames indicates the number of B pictures between the immediately preceding and immediately following I frame or P frame. This value can be greater than or equal to 1 and less than or equal to 3. The number_of_B_frames may not change within one clip.

padding_word represents zero or more insertion words that can be inserted according to the definition of CPI_UHD (). N1 may be any positive number corresponding to the 32-bit alignment state of the length field described above. Each padding_word can have any value.

FIG. 43 shows an example of the syntax of EP_map_UHD (). 43, the syntax of EP_map_UHD () has Trick_play_info information and EP_map_for_UHD_trickplay_PID (EP_stream_type, Nf) in addition to EP_map () defined in the existing Blu-ray specification.

44 shows an example of the syntax of EP_map_for_UHD_trickplay. In FIG. 44, length is composed of a 32-bit field indicating the total number of bytes immediately after the length field.

Position_of_Br indicates the position of the Br frame among consecutive Bs. Since there may be three Bs consecutively, Position_of_Br may be one of the values of 0, 1, and 2 indicating the first, second, and third of consecutive B2, respectively.

Temporal_ids represents the temporal ID of the I frame or the P frame. As described above, in the embodiment in which trick play is performed, it is possible to judge which P picture is skipped and which P picture is to be read and decoded according to the reproduction speed using the temporal ID. N_of_key_frames_in_GOP can be calculated by the following equation.

[Equation 1]

N_of_key_frames_in_GOP = number_of_frames_in_GOP / (1 + number_of_B_pictures)

In Equation (1), number_of_frames_in_GOP and number_of_B_pictures are defined in CPI_UHD (). For example, if the GOP is composed of 24 frames and the number of consecutive B frames is 3, the number of key frames in one GOP is 6.

In addition, immediately_following_key_frame_offset indicates an offset to the immediately following I or P frame according to the decoding order. Also, key_frame_size indicates a coding size of an I or P picture.

Meanwhile, FIGS. 45 and 46 show various examples of the player status register for UHD reproduction.

Fig. 45 shows the configuration of the PSR 21. PSR21 includes HD portion output mode preference information. In FIG. 45, the HD portion output mode preference information indicates that the full UHD frame is decoded and output when 0b, and 1b indicates that the HD portion of the UHD frame is decoded and output.

Although only the HD portion output mode preference information is shown in FIG. 45, according to another embodiment, the output mode preference information may also be included. The Output Mode Preference information indicates a 2D output mode when 0b and the Stereoscopic Output Mode mode when 1b.

46 shows the configuration of the PSR23. According to PSR23, it indicates the property value of the display connected to the BD-ROM player. 46, information such as a horizontal display size may be recorded in the PSR 23. [ The horizontal display size is information indicating the horizontal size of the connected display in centimeters. The horizontal display size can be written in various values such as 0x001 to 0xFFE depending on the horizontal size of the connected display. 0xFFE means the width of 4094 centimeters. 0x000 is undefined, and 0xFFF may mean a width of 255 centimeters or more.

If the display device does not provide a value through the interface, the BD-ROM player, that is, the recording medium reproducing apparatus 100, can automatically set its value before starting playback. If the value can not be set automatically, it can be set by the user.

As described above, according to various embodiments of the present invention, it is possible to provide various services such as a trick play service, an area of interest enlargement service, and an object adjustment service using additional information stored in the recording medium.

In the above-described services, only one service may be provided in one recording medium playback apparatus, but a plurality of services may be supported in one apparatus. In this case, the service can be selectively provided according to the user's selection. More specifically, when a user command for selecting one of the trick play service, the interest area expanding service, and the object adjustment service is input, the control unit 130 of the recording medium playback apparatus 100 detects the additional information corresponding to the service do.

As described above, when the recording medium is a Blu-ray Disc having four layers such as an index table, a movie object / BD-J object, a play list and a clip, the additional information is included in the play list file The STN_table_UHD table, the CPI_UHD () recorded in the clip file, and EP_map_for_UHD_trickplay. In addition, the additional information may be provided in various forms.

The control unit 130 may detect additional information corresponding to the service selected by the user from among the additional information, and then provide the service using the detected additional information. The service providing method has been described in detail in the above-described various embodiments, so that redundant description will be omitted.

The methods of providing services according to various embodiments of the present invention described above may each be coded in software and recorded in a non-volatile readable medium.

For example, the service providing method may include loading the recording medium and providing a service corresponding to the additional information, when the recording medium on which the video data encoded with the HEVC scheme and the additional information are recorded is loaded have. Here, the service may include at least one of a trick play service, an area of interest enlargement service, and an object adjustment service.

Non-transitory readable media can be installed in various types of devices, such as a recording medium playback device or a display device, and thus the above-described services can be provided in various devices.

A non-transitory readable medium is a medium that stores data for a short period of time, such as a register, cache, memory, etc., but semi-permanently stores data and is readable by the apparatus. In particular, the various applications or programs described above may be stored on non-volatile readable media such as CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM,

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 detail may be made therein without departing from the spirit and scope of the present invention.

110: driver section 120: data processing section
130: control unit 140: interface unit
150: storage unit 160: communication unit

Claims (6)

A driver unit for loading the recording medium, when the recording medium on which the HEVC encoded video data and the additional information are recorded is loaded;
A data processing unit for processing the video data;
And a control unit for providing a service corresponding to the additional information,
Wherein the service includes at least one of a trick play service, a region of interest enlargement service, and an object adjustment service. The method according to claim 1,
The recording medium is a Blu-ray disc composed of four layers such as an index table, a movie object / a BD-J object, a play list and a clip,
The additional information,
An STN_table_UHD table included in the playlist file, CPI_UHD () recorded in the clip file, and EP_map_for_UHD_trickplay. The method according to claim 1,
Wherein the control unit selectively performs the trick play service, the ROI service, and the object adjustment service according to a user selection. Loading the recording medium when the recording medium on which the HEVC encoded video data and the additional information are recorded is loaded;
And providing a service corresponding to the additional information,
Wherein the service comprises at least one of a trick play service, a region of interest enlargement service, and an object coordination service. 5. The method of claim 4,
The recording medium is a Blu-ray disc composed of four layers such as an index table, a movie object / a BD-J object, a play list and a clip,
The additional information,
The STN_table_UHD table included in the playlist file, the CPI_UHD () recorded in the clip file, and the EP_map_for_UHD_trickplay. The method according to claim 1,
Further comprising the step of detecting, from the recording medium, additional information corresponding to the selected service when one of the trick play service, the ROI service, and the object coordination service is selected according to a user selection, Way.

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