WO2012023787A2 - 디지털 수신기 및 디지털 수신기에서의 컨텐트 처리 방법 - Google Patents
디지털 수신기 및 디지털 수신기에서의 컨텐트 처리 방법 Download PDFInfo
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- WO2012023787A2 WO2012023787A2 PCT/KR2011/006018 KR2011006018W WO2012023787A2 WO 2012023787 A2 WO2012023787 A2 WO 2012023787A2 KR 2011006018 W KR2011006018 W KR 2011006018W WO 2012023787 A2 WO2012023787 A2 WO 2012023787A2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/189—Recording image signals; Reproducing recorded image signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/161—Encoding, multiplexing or demultiplexing different image signal components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/93—Regeneration of the television signal or of selected parts thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
- H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/10537—Audio or video recording
- G11B2020/10592—Audio or video recording specifically adapted for recording or reproducing multichannel signals
- G11B2020/10611—3D video data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/7921—Processing of colour television signals in connection with recording for more than one processing mode
Definitions
- the present invention relates to a digital receiver, and more particularly, to store and play 3D content in a digital receiver having a PVR (Personal Video Recorder) capable of receiving and storing 3-dimensional (3D) signals.
- the present invention relates to a digital receiver capable of processing such content and a content processing method in a digital receiver.
- Analog and digital broadcasts have been mixed in recent years. Recently, analog broadcasts have been terminated and full-scale digital broadcasts are being carried out worldwide.
- the digital receiver should be able to process the content appropriately to reflect this reality.
- the present invention is to solve the above-mentioned problems, in the present invention, while the digital receiver having a PVR capable of receiving and storing the 3D signal to store, play, etc. 3D content through the PVR, 2D / 3D in the process
- An object of the present invention is to provide a digital receiver and a method for processing content in a digital receiver that support functions such as switching and view switching.
- the present invention provides a digital receiver and a method for processing contents in a digital receiver capable of supporting an effective PVR function for a 3D stream for full resolution per eye that is not frame-compatible. Make it another task.
- the present specification proposes the following technical solution in order to solve the above technical problem.
- One example of a method for processing a digital broadcast signal for a 3D service includes: adding and storing a time-stamp to an input 3D video elementary stream; Extracting the stored 3D video elementary stream and uploading according to the system clock based on the time-stamp value of the extracted 3D video elementary stream; Decoding the uploaded 3D video elementary stream; And formatting and decoding the decoded 3D video data according to an output format.
- the 3D video elementary stream may be a dual video stream including a base layer video stream and an enhancement layer video stream.
- time-stamp may be added for each transport packet of a predetermined unit among transport packets for an input 3D video elementary stream.
- the time-stamp may be added to a first transport packet received after a discontinuity period generated in a PID filtering process among transport packets for an input 3D video elementary stream.
- An example of a digital receiver for a 3D service includes a download module for controlling a time-stamp to be stored in an input 3D video elementary stream, extracting the stored 3D video elementary stream, and extracting the extracted 3D video elementary stream.
- a PVR module including an upload module for uploading according to a system clock based on a time-stamp value of the stream;
- a decoder for decoding the uploaded 3D video elementary stream;
- a formatter for formatting the decoded 3D video data according to an output format;
- an output unit configured to output formatted 3D video data.
- the download module may control to analyze the input 3D video elementary stream and generate and store index data for trick play according to the analysis result.
- the 3D video elementary stream may be a dual video stream including a base layer video stream and an enhancement layer video stream.
- the download module may add the time stamp to every transport packet of a predetermined unit among the transport packets for the input 3D video elementary stream.
- the download module may add the time stamp to a first transport packet received after a discontinuity period generated in a PID filtering process among transport packets for an input 3D video elementary stream.
- the digital receiver can provide various PVR functions for 3D content.
- effective PVR function can be supported for 3D stream for full resolution fur-eye in digital receiver.
- the digital receiver can effectively perform trick play, 2D / 3D conversion, and the like on 3D content using the PVR.
- FIG. 1 is a block diagram illustrating an example of a configuration of a digital receiver including a 3D PVR module according to the present invention
- FIG. 2 is a block diagram illustrating an example of configuration of a 3D PVR module of FIG. 1;
- FIG. 3 is a block diagram illustrating an example of a configuration of a download module included in the 3D PVR module of FIG. 2;
- 4 to 6 are diagrams for explaining an example of implementing a time stamp insertion in a download module according to the present invention.
- FIG. 7 is a view illustrating an example of a time stamp index data structure when using a time stamp according to the present invention.
- FIG. 8 is a view illustrating an example of an index configuration in a download module according to the present invention.
- FIG. 9 is a block diagram illustrating an example of a configuration of an upload module included in the 3D PVR module of FIG. 2;
- FIG. 10 is a flowchart illustrating an example of an operation of a receiver during 2D / 3D recording according to the present invention
- FIG. 11 is a flowchart illustrating an example of an operation of a receiver during 2D mode playback according to the present invention
- FIG. 12 is a flowchart illustrating an example of an operation of a receiver during 3D mode playback according to the present invention.
- FIG. 13 is a flowchart illustrating an example of an operation of a receiver when a view switching request is performed according to the present invention.
- module and “unit” for components used in the following description are merely given in consideration of ease of preparation of the present specification, and the “module” and “unit” may be used interchangeably with each other.
- the present invention relates to a digital receiver, and more particularly to 3D in a digital receiver having a PVR (Personal Video Recorder) capable of receiving and storing 3-dimensional (3D) signals.
- the present invention relates to a digital receiver capable of processing content such as storage, reproducing or playing, and a content processing method in a digital receiver.
- the digital receiver stores and plays 3D contents through a PVR in accordance with the present invention, but supports various PVR functions such as 2D / 3D switching and view switching in the process. And a content processing method in a digital receiver.
- the latter that is, full resolution per eye
- full resolution per eye may be used to help the understanding of the present invention among the frame-compatible system and the full resolution per eye system for 3D implementation in a digital receiver.
- the system will be described as an example.
- the scope of the present invention is not limited to the full resolution fur eye, and it will be apparent that the same applies to the frame-compatible system as well as other systems related to the present invention in the same or similar principle.
- the frame-compatible system is a system that recycles a conventional structure as it is when recording 3D content through a PVR in a digital receiver.
- the full resolution fur eye system such as Multiview Video Coding (MVC), Scalable Video Coding (SVC), Dual Codec, etc.
- MVC Multiview Video Coding
- SVC Scalable Video Coding
- Dual Codec Dual Codec
- More efficient methods are needed to support view switching.
- the present specification defines and describes methods such as time-stamp, PVR indexing, thumbnail extraction, and the like for providing 3D services according to the present invention.
- a digital receiver wants to perform functions such as storing, playing, and time-shifting 3D content using a PVR, a dual video stream rather than a single video stream.
- Different processing schemes or efficient schemes than the single video stream are required.
- the digital receiver requires selective processing of a stream necessary to perform the requested trick play function, but in the case of a dual video stream, a download or save process is performed. It is necessary to clarify the identification and processing of each elementary stream (ES) in the or, otherwise the trick play may not be smoothly handled at the request of the user. The same is true when the user requests a trick play in the 2D / 3D mode through the PVR function.
- a digital receiver and a digital receiver capable of various processes such as recording or storing 3D content or playing back, including trick play, for a dual video stream used in a full resolution fur eye system according to the present invention, It describes a content processing method.
- FIG. 1 is a block diagram illustrating an example of a digital receiver configuration including a 3D PVR module according to the present invention.
- an example of a digital receiver includes a receiving part 102, a VSB decoder 104, an input switch part 106, and a system decoder / demultiplexer. (System Decoder & Demux) 108, 3D PVR module 110, video decoder 112, view switching unit / 2D output unit 114, and formatter unit 116.
- System Decoder & Demux System Decoder & Demux
- the digital receiver is not shown in the configuration of FIG. 1, but is a receiver set (SET) including a display device or a display unit (hereinafter, a 'display device') or the configuration of FIG. 1 is a set-top box (STB).
- the display device may be implemented in the form of a box) and connected to a display device through an interface.
- the interface may be an HDMI (High Definition Multimedia Interface) interface between the set-top box and the display device, and an HDMI interface unit (not shown) may be provided in both devices.
- the 3D signaling method defined in the HDMI standard may be applied to use HDMI. Therefore, even in the latter case, the 3D content processed for performing the PVR function in the set-top box may be output from the display device without a problem.
- each component block shown in FIG. 1 may be modularized and merged according to a system, or may be divided into individual components.
- the system decoder / demultiplexing is illustrated and described as one configuration for convenience.
- FIG. 2 to be described later the two configurations are separately described for clarity.
- the receiver 102 includes, for example, a tuner and a demodulator to tune a Radio Frequency (RF) channel and to receive and demodulate a digital signal through the tuned channel.
- the digital signal is a moving picture experts group-2 (MPEG-2) transport stream.
- MPEG-2 moving picture experts group-2
- Elementary Streams (ES) included in the packetized packet ESs are included.
- the video stream may be, for example, a single video ES, and includes a base layer and an enhancement layer. It may be a dual video elementary stream (dual video ES) configured as a layer.
- dual video ES dual video elementary stream
- the video stream is a single video elementary stream (e.g., side by side format or top and bottom format)
- a left image and a right image (right image) Since each of the data has half-resolution, a configuration such as a scaler (not shown) may be further required.
- the video decoder to be described later is, for example, one video decoder for decoding the base layer video elementary stream and one video for decoding the enhancement layer video stream.
- Decoder In other words, at least two video decoders are required.
- a plurality of enhancement layer video streams may be provided for proper decoding corresponding to various coding schemes.
- SI System Information or Service Information
- PSI Program Specific Information
- PSIP Program and System
- DCP information protocol
- DVB-SI digital video broadcasting-service information
- NIT network information table
- SDT service description table
- EIT event information table
- PAT program association table
- PMT program map table
- a transport stream transmitted through a SEI message or an additional SEI message in a video stream or various descriptors belonging to the tables and the descriptors of the tables is 3D.
- the digital receiver may further include, for example, a signaling information processor and an associated database.
- the system decoder 108 to be described later may instead perform a function of the signaling information processor.
- contents of definitions, functions, and the like of related tables and descriptors are available in the content processing process of the digital receiver and the digital receiver of the present invention.
- the VSB decoder 104 performs VSB decoding on the demodulated digital signal.
- the VSB method is illustrated for convenience, but the present invention is not limited thereto, and methods such as quadrature amplitude-modulation (QAM) and quadrature phase-shift keying (QPSK) may be used.
- QAM quadrature amplitude-modulation
- QPSK quadrature phase-shift keying
- the input switch unit 106 switches the transport stream input to the system decoder 108, and when the PVR is played, the stored content input from the storage device through an upload module to be described later. ) Is transmitted to the system decoder 108, and when watching live, a transport packet received through the RF input, the receiver 102, the VSB decoder 104, and the like is transmitted to the system decoder 108.
- the system decoder 108 either decodes the incoming transport stream or decodes a transport packet regarding the stored content transmitted from the 3D PVR module 112. In addition, when the PVR mode is requested, the system decoder 108 controls the demultiplexer so that the demultiplexed video elementary stream is transmitted to the 3D PVR module 110. The system decoder 108 also sends a transport packet for the decoded transport stream or stored content to the video decoder 112. In addition, the system decoder 108 may also perform a function of a controller that decodes information necessary for the digital receiver and controls system-wide control.
- the demultiplexer demultiplexes various elementary streams including audio, video and signaling information from the decoded transport stream.
- the demultiplexed video elementary streams are transmitted to the 3D PVR module 110.
- video data passing through the system decoder 108 may bypass demultiplexing and be transmitted to the video decoder 112.
- the 3D PVR module 110 receives the transport packets for the video elementary stream input through the system decoder / demultiplexer 108 to process and process the PVR mode operation, and to reproduce the input switch unit 106.
- the transport packets are processed and processed. Detailed configuration and function of the 3D PVR module 110 will be described later and will be omitted herein.
- the video decoder 112 decodes the video data processed by the system decoder / demultiplexer 108.
- the video decoder 112 may, for example, decode the video data based on the demultiplexed signaling information in the demultiplexer.
- the video decoder 112 transmits the decoded 2D video data to the view switching / 2D output unit 114, and outputs the decoded 3D video data to the formatter unit 116.
- the view switching unit / 2D output unit 114 outputs video data input from the video decoder 112 to the display device so that 2D video is output / reproduced.
- the view switching unit / 2D output unit 114 may also perform a change process from the 3D view to the 2D view according to a view switching command according to a user's request.
- the formatter unit 116 receives the input left video image and the right video image, formats the output image to match the output frequency or output format, and outputs the same to the display device. If the input video elementary stream is a 2D single video elementary stream, an FRC block (Frame Rae Control block) exists in front of the formatter unit 116, and thus may be appropriately processed for 3D processing.
- FRC block Frae Rae Control block
- FIG. 2 is a block diagram illustrating an example of configuration of a 3D PVR module of FIG. 1.
- an example of the 3D PVR module 110 includes a download module 212, an index & file database 214, and a storage unit. And an upload module 218.
- the transport stream passing through the VSB decoder 104 of FIG. 1 is input to the input switch unit 106.
- the input switch unit 106 first operates in the first mode.
- the first mode is, for example, a process for processing an input transport stream.
- the system decoder 108 transmits the transport stream to the demultiplexer 108 after basic processing.
- the demultiplexer 108 demultiplexes the input transport stream into elementary streams including audio, video, and signaling information.
- the demultiplexer 108 transmits, in particular, transport packets for the demultiplexed video elementary stream (Video ES) to the download module 212.
- the download module 212 inserts a time-stamp into transport packets for the input video elementary stream, transmits the time stamp to the storage unit 216, and stores the index. Index data is generated, transmitted to the index & file database 214, and stored.
- the upload module 218 extracts transport packets from the storage unit 216 when the PVR playback request is received.
- the upload module 218 uploads the transport packets to the input switch unit 106, and the input switch unit 106 outputs the transport packets input to the system decoder 108 according to the PVR playback mode.
- the system decoder 108 directly transmits the transport packets input from the input switch unit 106 to the demultiplexer 108 or the video decoder 112.
- the video decoder 112 decodes input transport packets and outputs video data.
- the video decoder 112 may appropriately decode the transport packets input based on the signaling information transmitted from the system decoder 108.
- the video decoder 112 outputs the corresponding data in a related configuration depending on whether 2D or 3D video data is input after decoding the transport packets.
- a user may request a trick mode from the digital receiver during PVR playback.
- the upload module 218 in the 3D PVR module 110 reads index data from the index & file database 214 and extracts appropriate transport packets from the storage unit 216 based on the read index data. To the input switch unit 106. The procedure is the same as described above.
- FIG. 3 is a block diagram illustrating an example of a configuration of a download module 212 included in the 3D PVR module 110 of FIG. 2.
- 3 is specifically related to the operation and functionality of the download module 212, which basically receives the transport packets for the demultiplexed video elementary streams from the demultiplexer 108. Time stamping and / or indexing.
- the download module 212 is basically a component for performing an operation for storing a PID (Packet IDentifier) stream corresponding to a program to be recorded among transport streams input to the system decoder 108.
- PID Packet IDentifier
- the download module 212 includes a system clock part 312, a time-stamp insertion part 314, and an index processing part 316.
- the index processing unit 316 is for indexing work for convenience of trick play in the PVR play mode as described below, and may be unnecessary in the basic play mode. Therefore, in some cases, it can also be omitted.
- the processing of the time-stamp is basically that transport packets for video elementary streams recorded and stored via the download module 212 are to be uploaded via the upload module 218 in the course of subsequent playback. And the timing of the transport stream input to the system decoder 108 at the time of storage.
- time stamp processing there are three ways of time stamp processing. First, a time-stamp is inserted into every transport packet input from the demultiplexer 108. Second, a time-stamp is inserted into each transport packet of a predetermined predetermined unit. Finally, an adaptive time-stamp is inserted. There may be an insert method. Here, unlike the first scheme, a time-stamp is not inserted into every transport packet. However, unlike the second scheme, a time-stamp scheme is inserted instead of a time-stamp periodically.
- a time-stamped transport of 192 bytes is attached with a time-stamp (4 bytes) to every transport packet (188 bytes) input to the download module 212 via the system decoder 108. It is in the form of a stream.
- the second to third methods it is for minimizing the overhead caused by the time-stamp, and adaptively determines whether to insert a time-stamp for the input transport packet. By time stamping the system efficiency can be increased.
- the input data becomes a transport packet to be stored, and a time-stamp corresponding to the PCR value when the corresponding transport packet is input is added to the data packet.
- the stamp is inserted into a 192 byte time-stamped transport stream.
- FIG. 4 to 6 illustrate an example of an implementation of time stamp insertion in a download module according to the present invention
- FIG. 7 illustrates an example of a time stamp index data structure when using a time stamp according to the present invention. The figure is shown.
- FIG. 4 to 6 specifically illustrate a case where a time-stamp is inserted only when discontinuity occurs, for example, without inserting a time-stamp in all transport packets belonging to all transport streams to be stored. have.
- a method of not inserting a time stamp in all transport packets is called, for example, an adaptive time-stamp insertion method.
- time-stamp index (FIG. 7) indicating a time-stamping zone in each transport packet may be used as described above.
- the time-stamp index data structure used when the adaptive time-stamp is used is a time_stamp_exist field indicating the presence or absence of a time-stamp in a transport packet corresponding to the most significant bit (MSB, 1 bit) in size of 1 byte.
- (field) 710 and the remaining bits include a packet_run_length_minus_1 field 720.
- the packet_run_length_minus_1 field 720 may indicate or identify the number of consecutive transport packets, for example, corresponding packets, that is, time-stamps are not added from the present packet. Therefore, by using the packet_run_length_minus_1 field 720, the time-stamp index defined as shown in FIG.
- the packet_run_length_minus_1 field 720 constituting the time-stamp index is not defined, for example, the packet_run_length_minus_1 field 720 may be added to all transport packets to be input or to all transport packets without a time-stamp. .
- time stamp processing method according to the present invention will be described.
- the following describes a method of implementing the time-stamp index as shown in FIG. 7 with reference to the examples of FIGS. 4 to 6.
- a total of eight PID streams input to the system decoder 108 are illustrated.
- the first two PID streams have a value of 0x0300 as the PID value
- the next four PID streams have a value of 0x0301, 0x0301, 0x0302, and 0x0302, respectively
- the remaining two PID streams have a value of 0x0300 again. Illustrated.
- the PID belonging to the stream to be downloaded among the eight PID streams of FIG. 4 are PID streams having values of 0x0300 and 0x0301, as illustrated in FIG. 5, the PID having a PID value of 0x0302 among the total of eight PID streams is shown.
- a total of six PID streams except two are input to the download module 212 through PID filtering.
- each PID stream is input sequentially, for example. This is because each PID stream has a system clock input to the system decoder 108 because the PID streams stored in the storage unit 216 in the PVR module are used again at the time of reproduction.
- the PID streams input to the download module 212 may include two PIDs having a PID value of 0x0302 through PID filtering among the eight PID streams input to the system decoder 108.
- a total of six PID streams except for the fifth and sixth PID streams in sequence are input to the download module 212, resulting in discontinuities 510.
- the download module 212 is configured for proper processing of PID streams input after the discontinuous section 510 when a discontinuous section 510 is generated between the PID streams. Action should be taken.
- an adaptive time-stamping method in which a time including an adaptive time-stamp defined as shown in FIG. 7 in the PID stream 610 that is input for the first time after the discontinuous period 510.
- a stamp To add a stamp.
- the time_stamp_exist field 710 of the adaptive time-stamp is defined as a value indicating that a time-stamp exists in the packet, and in the following packet_run_length_minus_1 field 720, the PID streams existing between up to the next discontinuity interval are included. By indicating the number, the efficiency of the system can be increased.
- the range in which the PID streams may be indicated may be limited by defining 1 byte. This can be solved by increasing the number of bytes defined by the corresponding adaptive time stamp or adding a time stamp by selecting the PID stream again in an appropriate range. For example, if the run length is 128 or more, the code is split and implemented. Therefore, when 255 consecutive packets without time stamps are generated, it can be expressed as 0x7F 0x7D.
- the time-stamped PID stream may have a size of, for example, 192 bytes.
- the following describes a method of constructing an index in the download module 212, where the index is different from the adaptive time-stamp index described above.
- FIG. 8 is a diagram illustrating an example of an index configuration in the download module 212 according to the present invention.
- an index defined by one byte includes a total of eight flags from the most significant bit (MSB) I_picture_flag to the least significant bit (LSB) Reserved flag.
- Such an index includes, for example, contents for a trick play that is generally requested and implemented in a PVR, for example, for fast forward, skip, and the like, in a flag form.
- the digital receiver decodes the video decoder itself at a normal speed even when the user requests a trick play in the PVR playback process.
- the digital receiver since pictures that are actually decoded according to the requested trick play are skipped and input according to the corresponding speed, the user may feel a fast speed or skip effect.
- the upload module 218 needs to extract and input data to be input to the (system) decoder in order to perform trick play smoothly. To this end, it is necessary to find the location of the corresponding data quickly.
- the index information according to the present invention is for faster and more efficient retrieval of data to be input to the decoder in the upload module 218 in the above case.
- the index information is to extract additional data that can quickly search for the location of the appropriate data in the stored video stream when performing a trick play according to a request during the PVR playback process in the digital receiver, skipping, fast forward (fast forward) When performing forward, etc., data corresponding to a random access point (RAP) is extracted and information is generated to be selectively input to the decoder.
- the random access point (RAP) may be any one of I, B, and P pictures.
- an I picture is described as a random access point (RAP) as an example to help understanding of the present invention and for convenience of description.
- an I picture refers to a picture that can be randomly accessed.
- the index information may define a 2D / 3D related indexing function so that the 2D or 3D mode can be selected during the trick play, that is, the stream can be properly uploaded according to the mode.
- the download module 212 analyzes the transport packets stored when the index is generated. The download module 212 determines whether a random access point (RAP) is included in the corresponding transport packet, for example, based on the analysis result. In addition, the download module 212 determines whether the video elementary stream included in the corresponding transport packet is left image image data or right image image data. In addition, the download module 212 may determine whether the 2D compatible stream in the case of 3D.
- RAP random access point
- the download module 212 may define and implement the determined information as index information.
- the download module 212 is variable to generate an index for each transport packet or group of transport packets (e.g., 100 transport packet bundles or I picture start) to generate an index.
- the download module 212 transmits the inspection result to the index & file database, and manages by mapping the index and the physical location where the transport packet is stored in the index & file database.
- the video elementary stream of the enhancement layer does not necessarily need to be an I picture.
- the download module 212 receives a transport packet to be stored as input data, but each transport packet includes a basic picture including whether the I picture starts or the start byte of the random access point (RAP), and the I picture start position.
- a transport packet including an index including information such as a stream and a view type is output.
- the view type information includes, for example, information on whether 2D compatibility, information on whether a light view is included, and the like.
- an index may be generated for each packet.
- I_picutre_flag for the I picture zone part and picture_start_exist for whether the picture starts exist sequentially from the most significant bit.
- Picture_endt_exist for the end of the picture, base_layer for the base layer, Enhance_layer for the enhancement layer, left for the left image data, right for the left image data, right for future use It is configured to include the reserved flag.
- the digital receiver may know the codec information of the enhancement layer based on the signaling information in the received digital signal.
- the system decoder 108 may recognize that the corresponding video stream is configured as a dual stream.
- the enhance_layer flag may not have meaning independently. This is because the video elementary stream of the enhancement layer itself is based on the video elementary stream of the base layer. Therefore, when the enhance_layer flag is deactivated, the digital receiver may know that the corresponding video stream is a single video stream. In this case, the Base_layer flag may be activated. This is because the base layer itself corresponds to a single video stream, so related information can be defined.
- the left or right flag may be viewed based on the left image image data or the right image image data in 2D mode viewing, for example, in view switching, in addition to identifying left image image data or right image image data of the corresponding data when viewing 3D mode. It can be used to determine whether the corresponding flag information can be used if view switching is requested during viewing as described above.
- the download module 212 has been described in detail so far. The following describes in detail the upload module 218 which uploads the transport packets for the video elementary stream to the system decoder 108 during PVR playback.
- FIG. 9 is a block diagram illustrating an example of a configuration of the upload module 218 included in the 3D PVR module of FIG. 2.
- the upload module 218 plays content stored or recorded in the storage unit 216 of the PVR
- the PVR inputs the transport packets input from the storage unit 216 to the system decoder 108 in a timely manner. Enable playback.
- the upload module 218 removes the four-byte time-stamp when the input transport packet is, for example, a time-stamped transport stream having a size of 192 bytes, thereby removing the system decoder 108 and the video decoder.
- Each packet of size 188 bytes processable at 112 is entered into the system decoder 108 at a timing based on the removed time-stamp.
- the upload module 218 selectively receives only appropriate transport packets based on the index information configured as shown in FIG. 8 extracted from the index & file database 214 to perform the trick play. It may also output to the decoder 108.
- the upload module 218 may include a system clock unit 912, an output controller 914, a time stamp processing unit 916, and the like.
- the system clock unit 912 provides information about a system clock to be referred to when the output control unit 914 controls the output, that is, when controlling the output of the corresponding transport packet.
- the output control unit 914 receives the index data from the index & file database 214 and requests the data from the storage unit 216. In this case, the output control unit 914 may make a request based on the received index data in requesting data to the storage unit 216.
- the storage unit 216 transmits the corresponding transport packet to the time stamp processor 916 according to a request of the output control unit 914. In this case, all of the transport packets output from the storage unit 216 may be time-stamped transport packets, and only some of them may be time-stamped transport packets.
- the time-stamp processor 916 removes the time-stamp from the inputted transport packets and outputs only 188-byte transport packets directly to the output controller 914 or the system decoder 108.
- the output control unit 914 may calculate a system timing according to the system clock of the system clock unit 912 and output the control signal to the time-stamp processing unit 916.
- the transmission timing to the system decoder 108 refers to the time stamp to be removed.
- the system time output from the system clock unit 912 is read and the corresponding value matches the value of the time stamp, the corresponding transport packet is stored. Input to the system decoder 108.
- the output timing may be calculated by using a virtual time stamp value with reference to a bit rate input during recording.
- the virtual time stamp may be generated, for example, in the download module 212 described in the 3D PVR module or may be generated by adding a separate configuration.
- the upload module 218 may refer to the time-stamp index described above with respect to the existence of the time-stamp, and thus may know the length and time-stamp of each transport packet.
- the output control unit 914 does not always receive index data and request data from the storage unit 216 based on the index data, but may request data output based on the index data during normal playback. . That is, in the case of trick play reproduction, the index & file database 214 may not be accessed with the output control unit 914.
- the number of pictures to be skipped in the software / middleware is determined according to the operation mode, and then the picture to be played is selected.
- the PVR module 110 may perform playback by skipping two I pictures when performing fast double speed playback among trick play functions.
- the PVR module 110 may determine the start and end positions of the first I picture by referring to the index file input from the index & file database 214.
- the upload module 218 may read transport packets for the corresponding section from the storage unit 216.
- the upload module 218 may skip over two I pictures, such as the fourth, seventh, and tenth, based on the input index information, read transport packet data for the corresponding position, and input the same to the system decoder 108. have.
- the upload module 218 processes the data at a normal speed with the system decoder 108 and the video decoder 112 during the playback process, but since the input data itself is skipped data, fast double speed playback is possible. Become. For example, assuming that I picture periods are ten, in this case, the effect of fast reproduction at 30x speed is generated.
- FIG. 10 is a flowchart illustrating an example of an operation of a receiver during 2D / 3D recording according to the present invention.
- FIG. 10 illustrates an operation of recording or storing a transport stream input in a 2D / 3D mode in a digital receiver.
- the description of the steps before the first transport stream is processed by the system decoder 108 via the receiver 102 and the VSB decoder 104 uses the foregoing description and the detailed description is Omit.
- the system decoder 108 determines whether there is a request for performing a PVR function, that is, a content storage command or a request, by the user (S102). As a result of the determination, if there is no content storage command, the system decoder 108 processes the input transport stream and then controls it to be output through the demultiplexer and the video decoder 112. Here, appropriate processing may be performed by referring to the above contents depending on whether the inputted transport stream is 2D / 3D and may be output. For example, if the input transport stream is a 3D video stream, it is converted into a 3D output form through the formatter 116 and displayed.
- the system decoder 108 determines whether the recording mode is 2D / 3D if there is a content storage command or request by the user (S104). This is because it is necessary to properly control the operation of the PVR module 110 according to the recording mode requested by the system decoder 108, and the operation of the PVR module 110 may be different according to the recording mode as described above. Because.
- step S104 when the recording mode is the 3D mode, the system decoder 108 must determine the PID combination to enable processing of the transport packet for the video elementary stream to be input to the PVR module 110 via the demultiplexer. do. (S106).
- step S106 the system decoder 108 performs filtering on the PID streams to be input to the PVR module 110 according to the determined PID combination. That is, the system decoder 108 selects the base layer video / audio elementary stream and the enhancement layer video elementary stream among the transport packets input through the demultiplexer and controls the input to the PVR module 110 (S108).
- step S104 determination when the recording mode is the 2D mode, the system decoder 108 must determine the PID combination to enable the transport packet for the video elementary stream to be input to the PVR module 110 via the demultiplexer. (S110).
- step S106 the system decoder 108 performs filtering on the PID streams to be input to the PVR module 110 according to the determined PID combination. That is, the system decoder 108 selects the base layer video / audio elementary stream from the transport packets input through the demultiplexer and controls the input to the PVR module 110 (S112).
- the PVR module 110 stores the analysis and related information on the video data for the video elementary streams input under the control of the system decoder 108 (S114).
- the PVR module 110 generates and inserts a time stamp for the transport packet in the storage unit 216 according to the method as shown in FIGS. 4 to 7 based on the analysis result of the video data performed in step S114. Save (S116).
- the PVR module 110 generates an index file in the same manner as in FIG. 8 so as to enable trick play reproduction of the PVR function after step S116 or at the same time, and stores the index file in the index & file database 214 (S118).
- the analysis of the video data may be performed in the index processing of the download module 212, the main operation of the analysis is to determine the presence of the I picture. For example, it is determined whether information such as a start point and an end point of an I picture, left / right, a base layer or an enhancement layer, and the like are stored, and the storage operation is appropriately performed according to the determination result.
- the download module 212 uses the time point at which each input transport packet is input to the system decoder 108, that is, the system time as the system clock, and designates the time point as a time stamp and inserts it into the transport packet.
- the adaptive time stamp it is possible to determine whether the transport packet is discontinuous, and determine and control the time stamp to be inserted according to the determination result.
- FIG. 11 is a flowchart illustrating an example of a receiver operation during 2D mode playback according to the present invention.
- FIG. 11 is a description of performing a playback operation on content stored for performing a PVR function as shown in FIG. 10.
- the stored content itself may be 2D content / 3D content.
- the upload module 218 determines whether the playback mode is 2D or 3D (S202). As a result of the determination, if the playback mode is 3D, reference is made to FIG. 12 described later (S204), and a detailed description thereof will be omitted.
- the upload module 218 when it is determined that the playback mode is the upload module 218 and is in the 2D playback mode, the upload module 218 performs PID filtering to input the PID stream corresponding to the video elementary stream to be uploaded to the system decoder 108. It performs (S206).
- the upload module 218 reads the index file from the index & file database 214 for upload control on the video elementary stream to be played, and stores the data corresponding to 2D based on the read index file 216.
- the position of the user is determined (S208). That is, in the case of a dual stream, only the base layer elementary stream is received and the video elementary stream corresponding to the enhancement layer video elementary stream is skipped.
- the 2D mode reproduction in which the enhancement layer is omitted without a timing problem for the normal double speed reproduction by the PID filter operation of the subsequent stage (the demultiplexer 108) does not need to skip the enhancement layer. This is possible.
- the upload module 218 uploads the 2D corresponding data according to the system timing (S210), and decodes the 2D corresponding data through the system decoder / demultiplexer 108 and the video decoder 112 (S212), and plays back the video. This is done (S214).
- FIG. 12 is a flowchart illustrating an example of a receiver operation during 3D mode playback according to the present invention.
- FIG. 12 relates to an operation of a receiver during 3D mode reproduction. As described above, it may correspond to a case in which the reproduction mode is 3D as a result of the step S202 determination.
- the upload module 218 determines whether the playback mode is 2D or 3D (S302). As a result of the determination, when the reproduction mode is 2D, the above-described FIG. 11 is referred to (S304).
- the upload module 218 performs PID filtering to input the PID stream corresponding to the video elementary stream to be uploaded to the system decoder 108 (S306).
- the upload module 218 reads the index file from the index & file database 214 for upload control on the video elementary stream to be played, and stores the data corresponding to 3D based on the read index file 216. Determine the location (S308).
- step S308 the upload module 218 determines whether there is a play request for trick play (S310).
- step S310 if there is no trick play playback request, all video elementary streams downloaded when the 3D mode is stored are uploaded based on the determined position of the 3D data (S312).
- step S310 if it is determined in step S310 that there is a trick play reproduction request, only transport packets corresponding to the 3D I picture are extracted and uploaded (S314).
- the system decoder / demultiplexer 108 and the video decoder 112 decode the 3D corresponding data uploaded (S316), and the formatter 116 performs 3D formatting according to the output format (S318).
- the 3D formatted 3D data is output (S320).
- the finally output video is decoded in the I picture of the base and enhancement layer and output through all the transformations in the formatter and the like.
- FIG. 13 is a flowchart illustrating an example of an operation of a receiver when a view switching request is performed according to the present invention.
- the upload module 218 determines the playback mode (S402), and if the 2D mode refers to the description of Figure 10 (S404).
- the upload module 218 again determines whether there is MVC or view dependency (S406). This is because when MVC or view dependency exists, all information corresponding to the base layer must be uploaded (S408).
- the upload module 218 uploads the corresponding data using the index information after performing the operation up to step S408 (S410).
- the system decoder / demultiplexer 108 and the video decoder 112 decode the 3D corresponding data uploaded (S412), and the formatter 116 performs 3D formatting according to the output format (S414).
- the 3D formatted 3D data is output (S416).
- both left and right views are processed, but only the view selected in the final output process may be output.
- the digital receiver may be selected to the desired view.
- the display device and its operation method according to the present invention can not be limitedly applied to the configuration and method of the embodiments described above, the embodiments are all or part of each embodiment so that various modifications can be made It may alternatively be configured in combination.
- the operating method of the display device of the present invention can be implemented as a processor-readable code on a processor-readable recording medium provided in the display device.
- the processor-readable recording medium includes all kinds of recording devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet. .
- the processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.
- the present invention relates to the processing of 3D content in a digital receiver having a PVR device capable of receiving and storing a 3D signal, which can be used in all fields of the digital receiver, and thus has industrial applicability.
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Abstract
Description
Claims (20)
- 3D 서비스를 위한 디지털 방송 신호를 처리하는 방법에 있어서,입력되는 3D 비디오 기본 스트림에 타임-스탬프를 부가하여 저장하는 단계;저장된 3D 비디오 기본 스트림을 추출하고, 추출된 3D 비디오 기본 스트림의 타임-스탬프 값에 기초하여 시스템 클록에 따라 업로드하는 단계;업로드된 3D 비디오 기본 스트림을 디코딩하는 단계; 및디코딩된 3D 비디오 데이터를 출력 포맷에 맞게 포맷팅하여 출력하는 단계;를 포함하는 방법.
- 제1항에 있어서,상기 입력되는 3D 비디오 기본 스트림을 분석하는 단계; 및상기 분석 결과에 따라 트릭 플레이를 위한 인덱스 데이터를 생성하여 저장하는 단계;를 더 포함하는 방법.
- 제2항에 있어서,상기 3D 비디오 기본 스트림은,베이스 레이어 비디오 스트림과 인핸스먼트 레이어 비디오 스트림으로 구성된 듀얼 비디오 스트림인 방법.
- 제3항에 있어서,상기 타임-스탬프는,입력되는 3D 비디오 기본 스트림을 위한 트랜스포트 패킷들 중 소정 단위의 트랜스포트 패킷마다 부가되는 방법.
- 제3항에 있어서,상기 타임-스탬프는,입력되는 3D 비디오 기본 스트림을 위한 트랜스포트 패킷들 중 PID 필터링 과정에서 발생되는 불연속 구간 이후 수신되는 첫번째 트랜스포트 패킷에 부가되는 방법.
- 제4항 또는 제5항에 있어서,상기 타임-스탬프는,해당 트랜스포트 패킷에 타임-스탬프의 존재 여부를 지시하는 제1 플래그와 해당 트랜스포트 패킷 이후 타임-스팸프가 부가된 다음 트랜스포트 패킷까지의 런 렝쓰(run length)를 지시하는 제2 플래그 중 적어도 하나를 포함하는 방법.
- 제6항에 있어서,상기 타임-스탬프는,상기 제2 플래그 값에 기초하여 소정 단위 또는 불연속이 발생하지 않은 경우에 부가되는 방법.
- 제3항에 있어서,상기 인덱스 데이터는,입력되는 3D 비디오 기본 스트림을 위한 트랜스포트 패킷과 관련하여, 해당 패킷 내 I 픽쳐 존재 여부에 대한 정보, I 픽쳐 시작 및 종료 위치에 대한 정보, 및 좌영상 이미지 데이터 또는 우영상 이미지 데이터 여부에 대한 정보를 포함하는 방법.
- 제8항에 있어서,상기 인덱스 데이터는,베이스 레이어 기본 스트림인지를 지시하는 정보 및 인핸스먼트 레이어 기본 스트림인지 여부를 지시하는 정보를 더 포함하는 방법.
- 제9항에 있어서,상기 타임 스탬프가 부가된 트랜스포트 패킷은,192 바이트 크기를 가지고, 업로드 이전에 타임 스탬프가 제거되는 방법.
- 3D 서비스를 위한 디지털 수신기에 있어서,입력되는 3D 비디오 기본 스트림에 타임-스탬프를 부가하여 저장되도록 제어하는 다운로드 모듈과, 저장된 3D 비디오 기본 스트림을 추출하고, 추출된 3D 비디오 기본 스트림의 타임-스탬프 값에 기초하여 시스템 클록에 따라 업로드하는 업로드 모듈을 포함한 PVR 모듈;업로드된 3D 비디오 기본 스트림을 디코딩하는 디코더;디코딩된 3D 비디오 데이터를 출력 포맷에 맞게 포맷팅하는 포맷터; 및포맷팅된 3D 비디오 데이터를 출력하는 출력부;를 포함하는 디지털 수신기.
- 제11항에 있어서,상기 다운로드 모듈은,상기 입력되는 3D 비디오 기본 스트림을 분석하고, 상기 분석 결과에 따라 트릭 플레이를 위한 인덱스 데이터를 생성하여 저장하도록 제어하는 디지털 수신기.
- 제12항에 있어서,상기 3D 비디오 기본 스트림은,베이스 레이어 비디오 스트림과 인핸스먼트 레이어 비디오 스트림으로 구성된 듀얼 비디오 스트림인 디지털 수신기.
- 제13항에 있어서,상기 다운로드 모듈은,입력되는 3D 비디오 기본 스트림을 위한 트랜스포트 패킷들 중 소정 단위의 트랜스포트 패킷마다 상기 타임-스탬프를 부가하는 디지털 수신기.
- 제13항에 있어서,상기 다운로드 모듈은,입력되는 3D 비디오 기본 스트림을 위한 트랜스포트 패킷들 중 PID 필터링 과정에서 발생되는 불연속 구간 이후 수신되는 첫번째 트랜스포트 패킷에 상기 타임-스탬프를 부가하는 디지털 수신기.
- 제14항 또는 제15항에 있어서,상기 타임-스탬프는,해당 트랜스포트 패킷에 타임-스탬프의 존재 여부를 지시하는 제1 플래그와 해당 트랜스포트 패킷 이후 타임-스팸프가 부가된 다음 트랜스포트 패킷까지의 런 렝쓰(run length)를 지시하는 제2 플래그 중 적어도 하나를 포함하는 디지털 수신기.
- 제16항에 있어서,상기 다운로드 모듈은,상기 제2 플래그 값에 기초하여 소정 단위 또는 불연속이 발생하지 않은 경우에 상기 타임-스탬프를 부가하는 디지털 수신기.
- 제13항에 있어서,상기 다운로드 모듈은,입력되는 3D 비디오 기본 스트림을 위한 트랜스포트 패킷과 관련하여, 해당 패킷 내 I 픽쳐 존재 여부에 대한 정보, I 픽쳐 시작 및 종료 위치에 대한 정보, 및 좌영상 이미지 데이터 또는 우영상 이미지 데이터 여부에 대한 정보를 상기 인덱스 데이터에 포함하는 디지털 수신기.
- 제18항에 있어서,상기 인덱스 데이터는,베이스 레이어 기본 스트림인지를 지시하는 정보 및 인핸스먼트 레이어 기본 스트림인지 여부를 지시하는 정보를 더 포함하는 디지털 수신기.
- 제19항에 있어서,상기 업로드 모듈은,상기 타임 스탬프가 부가되어 192 바이트 크기를 가진 트랜스포트 패킷으로부터 업로드 이전에 타임 스탬프를 제거하는 디지털 수신기.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US13/817,369 US20130209063A1 (en) | 2010-08-17 | 2011-08-17 | Digital receiver and content processing method in digital receiver |
KR1020127033699A KR20130098184A (ko) | 2010-08-17 | 2011-08-17 | 디지털 수신기 및 디지털 수신기에서의 컨텐트 처리 방법 |
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US37427810P | 2010-08-17 | 2010-08-17 | |
US61/374,278 | 2010-08-17 |
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WO2012023787A2 true WO2012023787A2 (ko) | 2012-02-23 |
WO2012023787A3 WO2012023787A3 (ko) | 2012-04-12 |
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PCT/KR2011/006018 WO2012023787A2 (ko) | 2010-08-17 | 2011-08-17 | 디지털 수신기 및 디지털 수신기에서의 컨텐트 처리 방법 |
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US (1) | US20130209063A1 (ko) |
KR (1) | KR20130098184A (ko) |
WO (1) | WO2012023787A2 (ko) |
Cited By (1)
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WO2014005558A1 (zh) * | 2012-07-04 | 2014-01-09 | 合一网络技术(北京)有限公司 | 一种供用户上传3d视频到视频网站的系统和方法 |
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KR20120058702A (ko) * | 2010-11-27 | 2012-06-08 | 전자부품연구원 | 디지털 방송에서 서비스 호환 방식 전송 방법 |
JP5641090B2 (ja) * | 2013-03-14 | 2014-12-17 | ソニー株式会社 | 送信装置、送信方法、受信装置および受信方法 |
KR101792518B1 (ko) * | 2013-12-16 | 2017-11-02 | 엘지전자 주식회사 | 트릭 플레이 서비스 제공을 위한 신호 송수신 장치 및 신호 송수신 방법 |
US9942622B2 (en) | 2014-01-24 | 2018-04-10 | Hiperwall, Inc. | Methods and systems for synchronizing media stream presentations |
WO2015115869A1 (ko) * | 2014-02-03 | 2015-08-06 | 엘지전자 주식회사 | 트릭 플레이 서비스 제공을 위한 신호 송수신 장치 및 신호 송수신 방법 |
US11697235B2 (en) * | 2020-07-21 | 2023-07-11 | Seiko Epson Corporation | Injection molding apparatus |
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- 2011-08-17 WO PCT/KR2011/006018 patent/WO2012023787A2/ko active Application Filing
- 2011-08-17 US US13/817,369 patent/US20130209063A1/en not_active Abandoned
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WO2012023787A3 (ko) | 2012-04-12 |
KR20130098184A (ko) | 2013-09-04 |
US20130209063A1 (en) | 2013-08-15 |
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