WO2005074182A1 - コンテンツの配信方法、エンコード方法及び受信再生方法と装置並びにプログラム - Google Patents
コンテンツの配信方法、エンコード方法及び受信再生方法と装置並びにプログラム Download PDFInfo
- Publication number
- WO2005074182A1 WO2005074182A1 PCT/JP2004/018574 JP2004018574W WO2005074182A1 WO 2005074182 A1 WO2005074182 A1 WO 2005074182A1 JP 2004018574 W JP2004018574 W JP 2004018574W WO 2005074182 A1 WO2005074182 A1 WO 2005074182A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- data
- encoded data
- content
- encoding
- error correction
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
Definitions
- the present invention relates to a technology for distributing content over a network, and more particularly, to a method for transmitting coded data with resistance to data loss on a transmission path, and recording data so as to have resistance.
- the present invention relates to a method of storing in a device, a method of receiving and decoding encoded data, and a device, a system, and a program thereof.
- a method using a compression coding method such as MPEG (Moving Picture Experts Group) -1, MPEG-2, and MPEG-4.
- MPEG Motion Picture Experts Group
- MPEG-4 Motion Picture Experts Group
- an input image frame is subjected to inter-frame prediction by motion compensation in units of a rectangular area of a fixed size called a macroblock, and the obtained motion vector and the prediction residual image data are quadratic.
- the signal data compressed by performing the original discrete cosine transform and quantization is subjected to variable length coding.
- Non-patent Document 3 a file format as described in Non-patent Document 3 below.
- RTP Real-Time Transport Protocol
- the client obtains the encoding data from the received packet and decodes the data to reproduce moving images and audio.
- retransmission is a method in which the client informs the distribution side to retransmit the lost packet and transmits it again.
- retransmission cannot be used on transmission lines without uplink.
- the FEC transmits the FEC data (error correction data) at the same time as the encoded data, and if the packet is lost, the FEC data is calculated to calculate the lost packet. This is a method of restoring.
- Multiple transmission is a method of transmitting a packet of the same information a plurality of times to reduce the probability of packet loss.
- a configuration is also known in which audio data is simultaneously encoded by a plurality of encoders to generate encoded data having different compression rates, and is transmitted via a packet-based network such as an IP network (for example, Patent Document 1) described later.
- IP network for example, Patent Document 1
- Non-Patent Document 1 IETF RFC 1889 "RTP: A Transport Protocol for Real-Time
- Non-Patent Document 2 ISO / IEC 14496-12: 2003: “Information technology-Coding of audio-visual objects ⁇ Part 12: ISO base media file format”
- Non-Patent Document 3 ISO / IEC 15444-12: 2003 "Information technology-JPEG 2000 image coding system-Part 12: ISO base media file format"
- Patent Document 1 JP-A-2003-318851 (Fig. 1)
- a main object of the present invention is to provide a content that suppresses as much as possible the remarkable disturbance of the reproduction content on the reception side caused by the transmission error of the encoded data without sending the feedback information from the reception side to the transmission side.
- Another object of the present invention is to provide a method, an apparatus, and a program for achieving the above main object without depending on a specific content distribution server.
- Still another object of the present invention is to provide a method, an apparatus, and a program for achieving the above-mentioned main object without applying an extra calculation load to a content distribution server.
- the invention disclosed in this application is configured roughly as follows in order to achieve the above object.
- an encoder encoder
- encodes encodes
- FEC Forwards Error Correction
- the generated encoded data or FEC data is stored in the storage unit, preferably as a single file.
- an identifier is attached to each encoded data and FEC data, and the data is stored as if it were one piece of encoded data (continuous encoded data).
- a method includes: creating N (where N is a positive integer of 2 or more) encoded data from one input content;
- N (where N is a positive integer of 2 or more) encoded data is created from one input content
- encoding may be performed so that the same part of the content can be decrypted even if the same part of the content is exchanged in the encoding unit between the N pieces of encoded data.
- an identifier having the same number may be added as a header to the coding unit of the same part of the N pieces of coded data.
- a method includes the steps of: generating encoded data from input content; and generating error correction code (FEC) data from the encoded data.
- FEC error correction code
- the encoded data and the error correction code data are combined into one And storing in a file.
- FEC error correction code
- the encoding device (encoding device) according to one aspect of the present invention generates N (where N is a positive integer of 2 or more) encoded data from one input content. And N means for storing the N encoded data as one encoded data in at least one file.
- a means for creating N (where N is a positive integer of 2 or more) encoded data from one input content, and the N encoded data Data may be merged for each frame unit, and means for storing the merged N encoded data as one continuous encoded data in at least one file may be provided. ,.
- means for merging the N coded data for each frame unit by shifting the coded data by an amount corresponding to a predetermined time length, and a means for merging the N coded data And means for storing as a single track in at least one file.
- a program according to another aspect of the present invention provides a computer that constitutes an encoding device that inputs and encodes content.
- N is a positive integer of 2 or more
- the content is inputted and encoded.
- the computers that make up the device are inputted and encoded.
- N is a positive integer of 2 or more
- a content receiving and reproducing method includes a step of receiving data in which a plurality of encoded data are merged;
- a client device for receiving data in which a plurality of encoded data are merged, and encoding each of the plurality of encoded data from the received data. It is provided with: means for identifying in units; means for separating into individual coded data in coding units; and means for decoding and outputting the separated coded data.
- a system includes an encoder that encodes content data or input data from an image signal input device such as a camera and records the encoded data in a file, and the data recorded in the file through a network.
- a distribution server for distributing to a client device, and a client device for selecting, decoding, displaying and reproducing data transmitted from the distribution server and received through the network.
- the encoder is a data input unit for inputting content data or input data from an image input device, and encoding the input data to N (where N is a predetermined positive integer of 2 or more)
- N is a predetermined positive integer of 2 or more
- And information about the continuous encoded data itself And a file output unit that outputs the file.
- the client device preferably includes a receiving unit that receives a packet from the distribution server via the network, a data processing unit that converts the received packet into continuous encoded data, In order to eliminate duplication of data in the same frame and the same part, data with a relatively high compression ratio is discarded in parts where multiple coded data are available.
- a general RTP Real-time Transport
- the reason is that, in the present invention, by sending a plurality of coded data or sending FEC data, the probability of data loss due to transmission errors is reduced.
- the means for achieving the above effects depends only on the encoder and the client, and the distribution server can have a general configuration.
- the reason is that a plurality of encoded data or FEC data is stored as one file, so that the distribution server in the middle is not affected.
- FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.
- FIG. 2 is a diagram showing a configuration of an encoder according to an embodiment of the present invention.
- FIG. 3 is a diagram showing a configuration of a distribution server according to an embodiment of the present invention.
- FIG. 4 is a diagram showing a configuration of a client according to an embodiment of the present invention.
- FIG. 5 is a diagram showing a data structure of a file according to an embodiment of the present invention.
- FIG. 6 is a diagram showing a configuration of an encoder according to an embodiment of the present invention.
- FIG. 7 is a diagram showing a configuration of an encoder according to another embodiment of the present invention.
- FIG. 8 is a diagram showing a data structure of a file according to another embodiment of the present invention. Explanation of symbols
- FIG. 1 is a diagram showing a configuration of the first exemplary embodiment of the present invention.
- the first embodiment of the present invention includes an encoder 103, a distribution server 105, and a client 106 (terminal). These respectively operate roughly as follows.
- the encoder 103 encodes the data of the original content 101 or the input data (digital signal data) of the camera (CCD camera or the like) 102 and records it in the file 104.
- the input data is moving image data or moving image data and audio data.
- the distribution server 105 distributes the data recorded in the file 104 to the client 106 through the IP (Internet Protocol) network 107.
- IP Internet Protocol
- the client 106 selects data received from the distribution server 105 through the IP network 107, decodes the data, and displays and reproduces the data on an output device.
- FIG. 2 is a diagram showing an example of the configuration of the encoder 103 in FIG. 1 (indicated by reference numeral 203 in FIG. 2).
- the encoder 203 includes a data input unit 204, an N-th (where N is a predetermined positive integer of 2 or more) encoding unit 207 from the first encoding unit 205, a merge ⁇ 208, It has a fan output ⁇ 209.
- N is a predetermined positive integer of 2 or more
- moving image and audio data are encoded and output as N encoded data.
- the parameters used in the N encoder sections 205 to 207 can be set individually, and the respective compression ratios can be set individually.
- the N pieces of encoded data are encoded so as to be able to be decoded even if the data is exchanged between encoded data in a unit of encoded data.
- the coding unit is a frame, or a video packet or a macro block in the case of MPEG-4.
- the N pieces of encoded data are reconfigured into one piece of continuous encoded data by the merging section 208.
- the configured continuous data is output to at least one file by the file output unit 209.
- information of the continuous encoded data itself which is not limited to the continuous encoded data, is also output.
- FIG. 3 is a diagram showing an example of the configuration of the distribution server 105 (in FIG. 3, denoted by reference numeral 302) in FIG.
- distribution server 302 includes a file input unit 303, a file analysis unit 304, a call processing unit B305, a key generation unit 306, and a rookie signal B307.
- the file input section 303 reads the force data of the file 301 (corresponding to the file 104 in FIG. 1).
- the data is analyzed by the file analysis unit 304 and divided into transmission units.
- the data divided into transmission units by the file analysis unit 304 is encapsulated into transmission packets by the packet generation unit 306.
- the packet created by the packet generation unit 306 is sent to the client 106 by the distribution unit 307.
- the call processing unit 305 performs information transmission and information exchange with the client 106 based on the information obtained by the file analysis unit 304.
- FIG. 4 is a diagram showing an example of the configuration of the client 106 (shown by reference numeral 401 in FIG. 4) in FIG.
- the client 401 includes a call processing unit 402, a reception unit B 403, a data processing unit 404, a data reconstruction unit 405, a decoding unit 406, and a reproduction unit 407.
- the operation of the client 401 will be described with reference to FIG.
- the call processing unit 402 performs information transmission and information exchange with the distribution server 105, and obtains information on data to be distributed.
- Receiving section 403 receives a packet from distribution server 105 via IP network 107.
- the packet received by receiving section 403 is returned to continuous code data by data processing section 404 using information from call processing section 402. However, there is no data corresponding to the packet loss in the IP network 107 on the way.
- the data reconstructing unit 405 reconstructs the original single encoded data.
- data having a high compression ratio is discarded in a portion where a plurality of encoded data are arranged.
- the data reconstructed by the data reconstructing unit 405 is decoded by the decoding unit 406 and the call processing unit
- the original moving image or audio data is decoded by using the information from 402, and is reproduced and displayed by the reproducing unit 407.
- the file 104 is configured with a plurality of encoded data as if it were one encoded data
- the distribution server 105 performs distribution by a general method, Automatically, a plurality of encoded data are simultaneously delivered in a packet. If a bucket loss occurs during distribution, the image quality and sound quality will be degraded, but the probability of packet loss will be reduced by simultaneously distributing a plurality of encoded data.
- the present invention As a result, in the client 106, deterioration in image quality and sound quality can be avoided as compared with the case where the present invention is not used. According to the present embodiment, since the compression ratio of the encoded data is changed, it is possible to save the transmission bandwidth to be used, rather than simply sending the same thing a plurality of times.
- the second embodiment of the present invention is different in the configuration of the encoder 103 of the first embodiment of the present invention. That is, the encoder 103 according to the first embodiment of the present invention shown in FIG. 1 has a configuration of an encoder 703 shown in FIG. 7 instead of the configuration of the encoder 203 shown in FIG.
- encoder 703 includes a data input unit 704, an encoding unit 705, an FEC unit 706, a merge unit 707, and a final output sound B708. It corresponds to the original content 701, the camera 702, and the finale 709f of FIG. 7, and the original content 101, the camera 102, and the finale 104 of FIG.
- moving image and audio data, or data of the moving image and the audio or data of the moving image and the audio are input from the original content 701 or the camera 702 to the data input unit 704.
- moving image and audio data are encoded by the encoding unit 705.
- FEC data is generated in the FEC unit 706 using the encoded data.
- the encoded data and the FEC data are reconfigured by the merging unit 707 into one continuous encoded data.
- the configured continuous data is output to at least one file 709 by the file output unit 708.
- information of the continuous encoded data itself which is not limited to the continuous encoded data, is also output.
- distribution server 105 in FIG. 1 has the configuration shown in FIG. 3, and operates as follows.
- distribution server 302 reads data from file 301 at file input unit 303.
- the data is analyzed by the file analysis unit 304 and divided into transmission units.
- the divided data is encapsulated into a packet for transmission by the packet generation unit 306.
- the created packet is delivered by the delivery unit 307 to the client 106 (see FIG. 1) through the IP network 107 (see FIG. 1).
- the call processing unit 305 performs information transmission and information exchange with the client based on the information obtained by the file analysis unit 304. Since the file 301 includes encoded data and FEC data collectively, the distribution unit 307 distributes encoded data and FEC data packets at the same time.
- the client 106 shown in FIG. 1 has the configuration shown in FIG. Works like that.
- the call processing unit 402 communicates and exchanges information with the distribution server 105 (see FIG. 1) to obtain information on the data to be distributed.
- the receiving unit 403 receives a packet from the distribution server through the IP network 107 (see FIG. 1).
- the received packet is returned to continuous encoded data by the data processing unit 404 using information from the call processing unit 402.
- the data reconstructing unit 405 calculates using the FEC data and reconstructs the coded data with the packet loss.
- the original moving image or audio data is obtained by decoding by the decoding unit 406, and is reproduced and displayed by the reproducing unit 407.
- the distribution server 105 distributes the data in a general manner. Then, the encoded data with FEC data is automatically distributed in packets. If packet loss occurs during distribution, image quality and sound quality will be degraded. However, by distributing FEC data, encoded data can be reconstructed even if packet loss occurs. As a result, in the client 106, compared to the case where the present invention is not used, it is possible to avoid deterioration in image quality and sound quality.
- the encoder 603 includes a data input unit 604, a first encoding unit 605, a second end unit 606, a merge unit 607, and a fan output 608. Including.
- Encoder 603 operates as follows.
- moving image data and / or audio data are input from the original content 601 or the camera 602 to the data input unit 604.
- the moving image is encoded by an encoding method such as MPEG-4
- the audio is encoded by AAC (Advanced Audio Codec) or AMR (Adaptive Multi Rate). It is encoded by an encoding method and output as encoded data.
- the parameters used in the two encoding units 605 and 606 can be set arbitrarily, and the compression ratio can be set arbitrarily.
- the coding method, frame configuration, frame rate, intra-frame interval, and image size are the same for the two coded data
- the coding method, frame configuration The sampling rate is the same for the two encoded data.
- the two encoded data are encoded so that they can be decrypted even if the data are exchanged as long as they are in the same encoding unit.
- the coding unit is a frame, a video packet, a macroblock, or the like.
- the two coded data are formed into one continuous coded data in the merging section 607.
- An example of the configuration of the continuous encoded data at this time will be described with reference to FIG.
- Encoded data A501 is data encoded by first encoding section 605, and encoded data B502 is data encoded by second encoding section 606.
- encoded data B502 is data encoded by second encoding section 606.
- data is arranged in a frame unit in order along the flow of time.
- the continuous encoded data 503 is composed of these two encoded data.
- the data of the encoded data A501 and the data of the encoded data B502 are alternately arranged in frame units.
- M is an integer, and the data of the same frame are shifted by M frames so that they are adjacent to each other.
- a header is further inserted at the head of each video packet.
- This header includes an identifier indicating whether the subsequent frame or video packet is coded data A501 or coded data B502, the length of the frame or video packet, and the sequence number. enter.
- the configured continuous encoded data is output as a single track to a file such as MP4 by the file output unit 608.
- the information output at this time is not only continuous data but also information of continuous data itself and information of RTP header.
- the RTP header is It is output in frame units or video packet units, and transmitted by the distribution server 105 (see Fig. 1) in frame units or video packet units. This information includes the size of each frame or video packet including the header in the continuous data.
- the output to one MP4 file may be output to a file divided into a plurality.
- the distribution server 105 of FIG. 1 has the configuration shown in FIG. 3, and operates as follows.
- the data is read.
- the data is analyzed by the file analysis unit 304, and is divided into frames or video packets.
- the divided data is encapsulated in an RTP packet by the packet generation unit 306.
- the RTP packet is delivered to the client 106 of Fig. 1 via the IP network 107 by the rookie communication unit 307 via UDP (User Datagram Protocol).
- UDP User Datagram Protocol
- the call processing unit 305 based on the information obtained by the file analysis unit 304,
- P Real Time Streaming Protocol
- SDP Session Description Protocol
- the file 301 is configured as the continuous encoded data 503 in FIG.
- the RTP packet delivered at 307 consists of a packet of encoded data A501 and encoded data
- the continuous encoded data 503 is configured by shifting the encoded data A501 and the encoded data B502 by M frames, even when distributed, it is temporally shifted by M frames. Will be delivered.
- the client 106 has the configuration shown in Fig. 4 and operates as follows.
- information is transmitted to the distribution server 105 using the RTSP, SDP, or the like, and information on data to be distributed is obtained.
- the receiving unit 403 receives the RTP packet from the distribution server 105.
- the data processing unit 404 removes the RTP header and returns the original continuous encoded data 503 (see Fig. 5). However, there is no data corresponding to the packet loss in the IP network 107 on the way. [0102] Next, the data reconstructing unit 405 uses the header 504 (see Fig. 5) to remove data having a high compression ratio for a portion having the same frame or video packet in order to remove an overlapping portion. Discard.
- the original encoded data is reconstructed.
- the original moving image or audio data is obtained by decoding by the decoding unit 406, and is reproduced and displayed by the reproducing unit 407.
- the second embodiment of the present invention includes an encoder 103, a distribution server 105, and a client 106, as shown in FIG.
- the encoder 103 includes, as shown in FIG. 7, a data input unit 704, a unit code 705, an FEC unit B706, a merge unit 707, and a final output unit 708.
- the distribution server 105 includes a file input unit 303, a file analysis unit 304, a call processing unit 305, a packet generation unit 306, and a distribution unit 307, as shown in FIG.
- the client 106 includes a call processing unit 402, a reception unit B403, a data processing unit 404, a data reconstruction unit 405, a decoding unit 406, and a reproduction unit 407.
- Encoder 703 in FIG. 7 operates as follows. First, moving image data and / or audio data are input from the original content 701 or the camera 702 to the data input unit 704.
- the moving image is encoded by an encoding method such as MPEG-4, and the audio is encoded by an encoding method such as AAC or AMR, and is output as encoded data.
- FEC data is created in the FEC unit 706 using the encoded data. Many types are already known in this FEC. In the present invention, this type of FEC is not involved.
- the encoding data and the FEC data are formed into one continuous encoded data by the merging unit 707.
- An example of the configuration of the continuous encoded data at this time will be described with reference to FIG.
- the encoded data 801 is data encoded by the encoding unit 705.
- data is arranged in order of time in a frame unit.
- This encoding The continuous encoded data 802 is formed from the data.
- the encoded data 801 and the FEC data 803 are alternately arranged in frame units or in the case of moving image data in video packet units.
- the header 804 stores information of a subsequent frame or video packet. This information includes the length of the subsequent frame or video packet and the sequence number.
- the configured continuous encoded data is output by the file output unit 708 as at least one file (eg, MP4) as one track, for example.
- file eg, MP4
- Information output at this time includes information on continuous data itself, which is not limited to continuous data, and information on the RTP header. This information includes the size of each frame or each video packet including the header in the continuous data. In this example, it is needless to say that the force output to one MP4 file and the output to a plurality of divided files may be used.
- the distribution server 105 of FIG. 1 has the configuration shown in FIG. 3, and operates as follows.
- the data is read from the file 301 by the file input unit 303.
- the data is analyzed by the file analysis unit 304, and is divided into frames or video packets.
- the divided data is encapsulated into an RTP packet by the packet generation unit 306.
- the RTP packet is delivered by the delivery unit 307 to the client 106 in FIG. 1 via the IP network 107 via UDP.
- the call processing unit 305 transmits information based on the information obtained by the file analysis unit 304 using a client, RTSP, SDP, or the like. Since the finale 301 is configured like the continuous encoded data 802, the RTP packet distributed by the distribution unit 307 is distributed with both the encoded data packet and the FEC data packet.
- the client 106 has the configuration shown in FIG. 4, and operates as follows.
- the call processing unit 402 communicates information with the distribution server 105 using RTSP, SDP, or the like, and obtains information on data to be distributed.
- the receiving unit 403 receives the RTP packet from the distribution server 105.
- the received RTP packet is stripped of the RTP header in the data processing unit 404, and is returned to the original continuous encoded data 802. However, there is no data for packet loss on the IP network on the way.
- the data reconstructing unit 405 calculates using the FEC data to reconstruct the original coded data.
- it is decoded by the decoding unit 406.
- the original moving image or audio data is obtained and reproduced and displayed by the reproducing unit 407.
- the present invention can be applied to applications such as a program or a device for distributing or receiving a moving image and a sound on an IP network. Also, the present invention can be applied to a program and an apparatus for encoding moving images and sounds.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005517385A JPWO2005074182A1 (ja) | 2004-01-28 | 2004-12-13 | コンテンツの配信方法、エンコード方法及び受信再生方法と装置並びにプログラム |
CN2004800410867A CN1906880B (zh) | 2004-01-28 | 2004-12-13 | 内容分发方法、编码方法、接收再现方法和装置 |
US10/587,712 US7856585B2 (en) | 2004-01-28 | 2004-12-13 | Content distribution method, encoding method, reception/reproduction method and apparatus, and program |
EP04806935A EP1713193A4 (en) | 2004-01-28 | 2004-12-13 | CONTENT DISTRIBUTION M THODE, CODA GE MODE, M THODE AND RECOVERY / REPRODUCTION DEVICE, AND PROGRAM sb / sb |
US12/943,073 US8055974B2 (en) | 2004-01-28 | 2010-11-10 | Content distribution method, encoding method, reception/reproduction method and apparatus, and program |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004020124 | 2004-01-28 | ||
JP2004-020124 | 2004-01-28 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/587,712 A-371-Of-International US7856585B2 (en) | 2004-01-28 | 2004-12-13 | Content distribution method, encoding method, reception/reproduction method and apparatus, and program |
US12/943,073 Continuation US8055974B2 (en) | 2004-01-28 | 2010-11-10 | Content distribution method, encoding method, reception/reproduction method and apparatus, and program |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005074182A1 true WO2005074182A1 (ja) | 2005-08-11 |
Family
ID=34823740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/018574 WO2005074182A1 (ja) | 2004-01-28 | 2004-12-13 | コンテンツの配信方法、エンコード方法及び受信再生方法と装置並びにプログラム |
Country Status (6)
Country | Link |
---|---|
US (2) | US7856585B2 (ja) |
EP (1) | EP1713193A4 (ja) |
JP (1) | JPWO2005074182A1 (ja) |
KR (2) | KR20080102322A (ja) |
CN (2) | CN101714909A (ja) |
WO (1) | WO2005074182A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006042306A (ja) * | 2004-06-25 | 2006-02-09 | Seiko Epson Corp | 映像配信システム、映像配信装置、映像受信装置、映像配信方法、映像受信方法、映像配信プログラム及び映像受信プログラム |
WO2008072469A1 (ja) * | 2006-12-11 | 2008-06-19 | Nec Corporation | メディア送受信方法、メディア送信方法、メディア受信方法、メディア送受信装置、メディア送信装置、メディア受信装置、ゲートウェイ装置、及びメディアサーバ |
JP2015170962A (ja) * | 2014-03-06 | 2015-09-28 | 日本放送協会 | 送信装置、受信装置及び水中伝送システム |
JP7392374B2 (ja) | 2019-10-08 | 2023-12-06 | ヤマハ株式会社 | 無線送信装置、無線受信装置、無線システム及び無線送信方法 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7136066B2 (en) * | 2002-11-22 | 2006-11-14 | Microsoft Corp. | System and method for scalable portrait video |
FR2895181B1 (fr) * | 2005-12-16 | 2008-12-05 | Mediatvcom Sarl | Procede et systeme de transmission d'un flux de donnees multimedia |
US9781028B2 (en) * | 2013-03-26 | 2017-10-03 | Panasonic Corporation | Transcoding and dynamic error correction for content centric networks using a proxy server |
JP6540189B2 (ja) * | 2015-04-21 | 2019-07-10 | ソニー株式会社 | 送信装置、送信方法、およびプログラム |
US11049219B2 (en) | 2017-06-06 | 2021-06-29 | Gopro, Inc. | Methods and apparatus for multi-encoder processing of high resolution content |
US11228781B2 (en) | 2019-06-26 | 2022-01-18 | Gopro, Inc. | Methods and apparatus for maximizing codec bandwidth in video applications |
US11481863B2 (en) | 2019-10-23 | 2022-10-25 | Gopro, Inc. | Methods and apparatus for hardware accelerated image processing for spherical projections |
CN113315997B (zh) * | 2020-02-27 | 2023-07-14 | 株式会社东芝 | 发送装置、服务器装置、发送方法以及程序 |
JP7438835B2 (ja) * | 2020-04-21 | 2024-02-27 | 株式会社東芝 | サーバ装置、通信システム、プログラムおよび情報処理方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09307532A (ja) * | 1996-05-13 | 1997-11-28 | Canon Inc | 通信端末装置及びデータ伝送システム |
JPH10126389A (ja) * | 1995-09-29 | 1998-05-15 | Toshiba Corp | 符号化装置および復号化装置 |
JPH11331253A (ja) * | 1998-05-13 | 1999-11-30 | Mitsubishi Electric Corp | データ配布装置 |
JP2001101427A (ja) * | 1999-09-30 | 2001-04-13 | Victor Co Of Japan Ltd | 画像圧縮方法、画像圧縮装置、画像伸長装置及び記録媒体 |
JP2001136150A (ja) * | 1999-08-25 | 2001-05-18 | Matsushita Electric Ind Co Ltd | 制御信号を用いるofdm信号の伝送システムならびにこれに関する装置及び方法 |
JP2003318851A (ja) * | 2002-04-26 | 2003-11-07 | Nec Corp | オーディオデータの符号変換伝送方法と符号変換受信方法及び装置とシステムならびにプログラム |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5862153A (en) * | 1995-09-29 | 1999-01-19 | Kabushiki Kaisha Toshiba | Coding apparatus and decoding apparatus for transmission/storage of information |
JPH09294264A (ja) * | 1996-04-25 | 1997-11-11 | Toshiba Corp | 画像圧縮処理方法および画像圧縮処理装置 |
JP3532709B2 (ja) | 1996-10-29 | 2004-05-31 | 株式会社東芝 | 動画像符号化方法および装置 |
JPH10191282A (ja) * | 1996-12-27 | 1998-07-21 | Hitachi Ltd | データ伝送方法およびそれを用いた通信システム、送信装置、受信装置 |
KR100243008B1 (ko) * | 1997-04-07 | 2000-03-02 | 김영환 | 엠펙(mpeg) 인코더 및 디코더 |
US6163870A (en) * | 1997-11-06 | 2000-12-19 | Compaq Computer Corporation | Message encoding with irregular graphing |
US6081909A (en) * | 1997-11-06 | 2000-06-27 | Digital Equipment Corporation | Irregularly graphed encoding technique |
US6618368B1 (en) * | 1998-02-19 | 2003-09-09 | Hitachi, Ltd. | Data gateway and method for relaying data |
CN1110205C (zh) * | 1998-12-15 | 2003-05-28 | 国家科学技术委员会高技术研究发展中心 | 并行解码的数字信源解码器 |
EP1079576A3 (en) * | 1999-08-25 | 2003-05-07 | Matsushita Electric Industrial Co., Ltd. | Multicarrier receiver with direct extraction of a control signal |
EP1172958A1 (fr) | 2000-07-11 | 2002-01-16 | Koninklijke Philips Electronics N.V. | Système de communication, émetteur, mèthode de protection contre des erreurs de transmission |
JP2002044663A (ja) * | 2000-07-24 | 2002-02-08 | Canon Inc | 画像符号化装置及び方法、画像表示装置及び方法、画像処理システム並びに撮像装置 |
US7095729B2 (en) | 2000-12-22 | 2006-08-22 | Intel Corporation | Method for multimedia communication over packet channels |
EP1274248A1 (en) * | 2001-06-29 | 2003-01-08 | Matsushita Electric Industrial Co., Ltd. | Data reproduction apparatus and data reproduction method |
EP1461954B1 (en) * | 2001-12-28 | 2006-06-07 | Matsushita Electric Industrial Co., Ltd. | Data reproduction apparatus and data reproduction method |
JP2003299095A (ja) * | 2002-04-02 | 2003-10-17 | Hitachi Ltd | 動画像処理装置、動画処理方法及び動画記録装置 |
US7957465B2 (en) * | 2002-04-26 | 2011-06-07 | Nec Corporation | Moving picture data code conversion/transmission method and device, code conversion/reception method and device |
-
2004
- 2004-12-13 KR KR1020087026710A patent/KR20080102322A/ko not_active Application Discontinuation
- 2004-12-13 EP EP04806935A patent/EP1713193A4/en not_active Withdrawn
- 2004-12-13 US US10/587,712 patent/US7856585B2/en active Active
- 2004-12-13 JP JP2005517385A patent/JPWO2005074182A1/ja active Pending
- 2004-12-13 WO PCT/JP2004/018574 patent/WO2005074182A1/ja active Application Filing
- 2004-12-13 KR KR1020067017267A patent/KR100894235B1/ko active IP Right Grant
- 2004-12-13 CN CN200910146251A patent/CN101714909A/zh active Pending
- 2004-12-13 CN CN2004800410867A patent/CN1906880B/zh active Active
-
2010
- 2010-11-10 US US12/943,073 patent/US8055974B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10126389A (ja) * | 1995-09-29 | 1998-05-15 | Toshiba Corp | 符号化装置および復号化装置 |
JPH09307532A (ja) * | 1996-05-13 | 1997-11-28 | Canon Inc | 通信端末装置及びデータ伝送システム |
JPH11331253A (ja) * | 1998-05-13 | 1999-11-30 | Mitsubishi Electric Corp | データ配布装置 |
JP2001136150A (ja) * | 1999-08-25 | 2001-05-18 | Matsushita Electric Ind Co Ltd | 制御信号を用いるofdm信号の伝送システムならびにこれに関する装置及び方法 |
JP2001101427A (ja) * | 1999-09-30 | 2001-04-13 | Victor Co Of Japan Ltd | 画像圧縮方法、画像圧縮装置、画像伸長装置及び記録媒体 |
JP2003318851A (ja) * | 2002-04-26 | 2003-11-07 | Nec Corp | オーディオデータの符号変換伝送方法と符号変換受信方法及び装置とシステムならびにプログラム |
Non-Patent Citations (1)
Title |
---|
See also references of EP1713193A4 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006042306A (ja) * | 2004-06-25 | 2006-02-09 | Seiko Epson Corp | 映像配信システム、映像配信装置、映像受信装置、映像配信方法、映像受信方法、映像配信プログラム及び映像受信プログラム |
JP4556703B2 (ja) * | 2004-06-25 | 2010-10-06 | セイコーエプソン株式会社 | 映像配信システム |
WO2008072469A1 (ja) * | 2006-12-11 | 2008-06-19 | Nec Corporation | メディア送受信方法、メディア送信方法、メディア受信方法、メディア送受信装置、メディア送信装置、メディア受信装置、ゲートウェイ装置、及びメディアサーバ |
JPWO2008072469A1 (ja) * | 2006-12-11 | 2010-03-25 | 日本電気株式会社 | メディア送受信方法、メディア送信方法、メディア受信方法、メディア送受信装置、メディア送信装置、メディア受信装置、ゲートウェイ装置、及びメディアサーバ |
JP2015170962A (ja) * | 2014-03-06 | 2015-09-28 | 日本放送協会 | 送信装置、受信装置及び水中伝送システム |
JP7392374B2 (ja) | 2019-10-08 | 2023-12-06 | ヤマハ株式会社 | 無線送信装置、無線受信装置、無線システム及び無線送信方法 |
Also Published As
Publication number | Publication date |
---|---|
US7856585B2 (en) | 2010-12-21 |
CN1906880B (zh) | 2010-04-28 |
EP1713193A1 (en) | 2006-10-18 |
KR20060123598A (ko) | 2006-12-01 |
KR20080102322A (ko) | 2008-11-24 |
CN1906880A (zh) | 2007-01-31 |
US20110055658A1 (en) | 2011-03-03 |
JPWO2005074182A1 (ja) | 2008-01-10 |
US20070174752A1 (en) | 2007-07-26 |
CN101714909A (zh) | 2010-05-26 |
US8055974B2 (en) | 2011-11-08 |
EP1713193A4 (en) | 2012-02-22 |
KR100894235B1 (ko) | 2009-04-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8055974B2 (en) | Content distribution method, encoding method, reception/reproduction method and apparatus, and program | |
JP4475235B2 (ja) | コンテンツの符号化、配信及び受信方法と装置とシステムならびにプログラム | |
JP4949591B2 (ja) | ビデオ誤り回復方法 | |
JP4405689B2 (ja) | データ伝送 | |
JP4016709B2 (ja) | オーディオデータの符号変換伝送方法と符号変換受信方法及び装置とシステムならびにプログラム | |
JP2003224839A (ja) | ストリーミングシステム及びストリーミング方法、ストリーミングサーバ及びデータ配信方法、クライアント端末及びデータ復号方法、オーサリング装置及びオーサリング方法、並びにプログラム及び記録媒体 | |
JP2003318864A (ja) | 符号化パケット伝送受信方法およびその装置ならびにプログラム | |
US7627184B2 (en) | Content distribution/reception device, content transmission/reception method, and content distribution/reception program | |
JP4182347B2 (ja) | 画像データ通信システム及び画像データ通信方法 | |
Girod et al. | A scalable codec for Internet video streaming | |
Vilei et al. | A novel unbalanced multiple description scheme for video transmission over wlan | |
Kiran et al. | Reduction of jitter in 3D video by transmitting over multiple network paths | |
JP5359724B2 (ja) | ストリーミング配信システム、サーバ装置、ストリーミング配信方法及びプログラム | |
Fresia et al. | An encoding/packetization solution for MPEG-4 facial animations delivery over RTP | |
Vilei et al. | Unbalanced multiple description with variable frame rate | |
PERKIS et al. | Multimedia over IP Networks | |
JP2011176442A (ja) | ストリーミング配信装置、中継装置、ストリーミング配信方法、中継方法及びプログラム | |
JPH11355768A (ja) | 符号化画像の再生方法,符号列変換装置および符号列変換プログラムの記録媒体 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005517385 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007174752 Country of ref document: US Ref document number: 10587712 Country of ref document: US Ref document number: 200480041086.7 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004806935 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020067017267 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2004806935 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1020067017267 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 10587712 Country of ref document: US |