WO2006040827A1 - 送信装置、受信装置、並びに再生装置 - Google Patents
送信装置、受信装置、並びに再生装置 Download PDFInfo
- Publication number
- WO2006040827A1 WO2006040827A1 PCT/JP2004/015250 JP2004015250W WO2006040827A1 WO 2006040827 A1 WO2006040827 A1 WO 2006040827A1 JP 2004015250 W JP2004015250 W JP 2004015250W WO 2006040827 A1 WO2006040827 A1 WO 2006040827A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- data
- playback
- reproduction
- reproduction information
- media
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234381—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by altering the temporal resolution, e.g. decreasing the frame rate by frame skipping
-
- 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
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
-
- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N21/4351—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reassembling additional data, e.g. rebuilding an executable program from recovered modules
-
- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
Definitions
- the present invention relates to a transmission device, a reception device, and a reproduction device for enabling reproduction control without causing reproduction deterioration.
- the playback device temporarily lacks the video data to be played back, and playback must be paused. It becomes a moving image that is difficult to see for the user.
- the playback device may cause the video buffer to overflow. Therefore, by reducing the interval between video frames to be played back, the video buffer Prevent overflow. In this way, it is possible to prevent the video from being discarded and to shorten the delay until playback.
- Patent Document 1 Japanese Patent Application Laid-Open No. 7-327214 Disclosure of the invention
- the conventional moving image playback device has a problem in that a visual influence such as a slightly faster or slower movement occurs because the frame playback interval is dynamically changed.
- the present invention has been made to solve the above-described problems, and provides a transmitting device, a receiving device, and a reproducing device that can perform reproduction control without changing the frame interval. Objective.
- a transmitting apparatus comprises: encoding means for temporally dividing and encoding media data having temporal continuity; and a data unit encoded by the encoding means means Reproduction information generating means for generating reproduction information based on the contents, and transmission means for transmitting the media data encoded by the encoding means and the reproduction information generated by the reproduction information generating section. is there.
- the receiving device decodes media encoded data from the receiving means, receiving means for extracting the received data power into media encoded data and reproduction information having temporal continuity. And decoding means for reproducing the media data decoded by the decoding means based on the reproduction information from the receiving means.
- the playback apparatus includes a storage means for storing media encoded data and playback information having temporal continuity in advance, and media encoded data and playback information from the storage means.
- the frame interval Playback control can be performed without changing the value.
- FIG. 1 is a block diagram showing a configuration of a transmission device and a reception device according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram for explaining the operation at the time of playback control according to Embodiment 1 of the present invention, and showing an example in the case of playing back an audio waveform.
- FIG. 3 An operation at the time of playback control according to Embodiment 1 of the present invention is described, and adjustment of playback timing is not performed! FIG.
- FIG. 4 is a diagram for explaining the operation at the time of playback control according to Embodiment 1 of the present invention and showing an example in which playback timing is adjusted.
- FIG. 5 is a diagram for explaining the operation at the time of playback control according to Embodiment 1 of the present invention, and is a diagram showing another example in which playback timing is adjusted.
- FIG. 6 is a block diagram showing a configuration of a playback device according to Embodiment 2 of the present invention.
- FIG. 1 is a block diagram showing the configuration of the transmission device and the reception device according to Embodiment 1 of the present invention.
- a transmission device 1 and a reception device 11 are connected via a network 10 to transmit / receive media data.
- the media data 2 input to the transmission device 1 is temporally continuous data such as video and audio.
- the encoding unit 3 encodes the media data 2 and generates the encoded data.
- the reproduction information generation unit 4 generates the reproduction information in data units encoded by the code key unit 3.
- the transmission unit 5 transmits the encoded data generated by the encoding unit 3 and the reproduction information generated by the reproduction information generation unit 4 together as one encoding unit.
- the receiving unit 12 of the receiving device 11 also receives the data strength received via the network 10 from the code decoder. Data and playback information.
- the decoding unit 13 decodes the encoded data.
- the playback unit 14 plays back the decrypted media data based on the playback information.
- FIG. 1 is a block diagram related to the transmission of a single piece of media data, but it is also possible to simultaneously transmit a plurality of media data by providing a plurality of similar functional units.
- the encoding unit 3 of the transmission apparatus 1 divides the temporally continuous media data 2 into arbitrary units, performs code encoding, and generates encoded data.
- the reproduction information generation unit 4 generates reproduction information in units of data encoded by the code key unit 3.
- the reproduction information indicates auxiliary information such as importance in reproduction in consideration of the contents of the media data.
- the reproduction information generating unit 4 receives information on the media data from the encoder unit 3.
- the code information unit 3 detects the magnitude of the amount of power (power) of the audio at the time of the code signal, and notifies the reproduction information generation unit 4 of this, so that the reproduction information generation unit 4 Audio data with a small amount of power is recorded as playback information because it does not affect playback audio even if it is not played back.
- the transmission unit 5 transmits the encoded data generated by the encoding unit 3 and the reproduction information generated by the reproduction information generation unit 4 together.
- a code key unit for sending code key data is generated, reproduction information is set in the header portion, and code key data is set in the information portion of the code key unit.
- the reception unit 12 separates the encoded data and the reproduction information from the received data and sends them to the decoding unit 13 and the reproduction unit 14, respectively.
- the decoding unit 13 decodes the encoded data and transfers it to the reproduction unit 14 as media data.
- the playback unit 14 plays back the decrypted media data based on the playback information. In this way, when reproducing the code data using the reproduction information, for example, by considering that the audio power is low as noise and not outputting it, noise can be prevented from being reproduced. On the other hand, all audio data can be output as usual.
- the transmission apparatus 1 since the transmission apparatus 1 transmits reproduction information in addition to encoded data, information (importance) in reproduction can be recognized for each code key data unit.
- the receiving device 11 controls whether or not playback is possible for each code key data unit based on the playback information. Therefore, it is possible to select and reproduce only the code data that seems necessary.
- the size and frequency of the audio waveform are important factors. Therefore, when encoding is performed by the encoding unit 3, the amount of power (power) of the audio is detected and the size thereof is detected. Is sent to the playback information generator 4.
- the reproduction information generating unit 4 regards the notified magnitude as the electric energy of the corresponding volume, and sets the electric energy as reproduction information corresponding to each code key data.
- the receiver 11 reproduces the code data based on this reproduction information, but it is also possible not to reproduce the one with a small amount of power.
- a content-important part is a part in which the video is moving. In other words, the larger the amount of change, the more important in terms of the content. Therefore, when the video data is encoded by the encoding unit 3, the amount of change in the previous frame force is expressed by the amount of power, and the magnitude is notified to the reproduction information generation unit 4.
- the reproduction information generation unit 4 regards the notified power amount as a change amount of the frame, and sets the change amount as reproduction information corresponding to each code key data.
- the receiver 11 reproduces the code data based on the reproduction information, but it is also possible not to reproduce the data having a small change amount.
- the word is one continuous voice. Silence is included in the word, and the amount of power at that time is small, but it has continuity as one word including the silence.
- the amount of power is monitored and there is a high possibility that the portion will be a discontinuous portion.
- the silent portion is also included in the word. For this reason, it is appropriate to consider the part where the electric energy is small for a certain period of time as a discontinuous part.
- the power amount is detected by the code key unit 3
- discontinuity can be detected by monitoring the change in the power amount, and the continuity as media is included in the reproduction information. be able to.
- FIG. 2 shows an example of a speech waveform, showing a waveform of a conversation consisting of four words “Today's fine weather”. Where the amplitude is large, the amount of power increases, but the word also includes a portion where the amount of power decreases. Since the part where the electric energy is small before and after the four words continues for a long time, these parts can be regarded as non-continuous parts as breaks in phrases.
- the reproduction information is transmitted as metadata separately from the encoded data, so that the encoded data can be transmitted by the conventional method, and the interconnection with the conventional apparatus is ensured. Then, by transmitting the playback information as metadata, playback control can be performed as necessary.
- the code data can be transmitted by the conventional method, and the reproduction information can be used as necessary.
- the encoded data and the reproduction information when transmitting the encoded data and the reproduction information by the transmission unit 5, it is possible to determine whether or not the encoded data can be transmitted according to the content of the reproduction information. For example, when the content of the reproduction information related to a certain code data is small in the amount of power or change that is not continuous, the encoded data can be prevented from being transmitted.
- the encoded data is selected and transmitted based on the content of the reproduction information. be able to.
- a silent part is included in a word, and the amount of power at that time is small, but continuity as one word including the silent part is important.
- the data should be played as it is without any special control. If playback is controlled in this area, the difference from the original sound will become clear. Since audio data that is silent and has no continuity does not change compared to the original audio even if that portion is not played back, playback can be stopped. If necessary, even if the next audio data is output, deterioration cannot be recognized in terms of audio quality.
- the content of the reproduction information has continuity, and when the amount of change is large, the encoded data is not reproduced. The load can be reduced.
- 3 and 4 are diagrams showing an example of the reproduction control operation of the present invention.
- the transmitter 1 generates and transmits data at intervals of 100 ms
- the receiver 11 receives and reproduces data at intervals of 100 ms.
- the operation clock is shifted between the transmission device 1 and the reception device 11, the time for processing the same data for 100 ms will be different.
- the reproduction interval at the reception device 11 is wider than that of the transmission device 1 as shown in FIG. 3, so that the reproduction timing of the media data is gradually delayed.
- continuity between data is indicated by horizontal lines between data.
- number 1 The second and second data have continuity, the third and fourth data have no continuity, and the fifth and subsequent data have continuity. These continuities are illustrated based on the reproduction information.
- the fourth data scheduled to be reproduced in the fourth time slot of the receiving apparatus 11 is discarded, and the fifth data is reproduced in the time slot of the fourth data.
- the discarded fourth data is a non-continuous part of the data, so it does not affect the media playback quality.
- the playback timing can be adjusted by controlling the playback so that media data before continuity is discarded and the new media data is played back.
- FIG. 5 shows an example of another reproduction control operation of the present invention.
- the situation is the same as in the case of Fig. 3, but this time an example in which the operating clock of the receiver 1 is fast is shown.
- the playback is temporarily interrupted at a portion where there is no continuity so as not to affect the playback quality of the media.
- the continuity between the second and third data is interrupted, so even if there is a slight increase in the time between the playback of these data, the playback quality is improved. Has no effect. Therefore, the third data on the time scale of the receiver 11 is not reproduced, and the fourth data on the fourth time scale is reproduced. By doing this, it is possible to temporarily avoid the shortage of insufficient data.
- the reproduction timing can be adjusted by delaying and outputting the media data of a portion without continuity!
- the playback unit 14 plays back the media data sent from the decoding unit 13
- the playback clock cannot be adjusted in accordance with the reception timing of the media data.
- the playback unit 14 has an excess or deficiency of playback data.
- the media data sent from the decoding unit 13 to the playback unit 14 is counted, and the number of media data that has not been played back is counted, and the number is large so that the number approaches a certain value. In this case, the media data is discarded. Conversely, if the number is small, the playback timing of the media data is delayed. At that time, it is possible to suppress degradation in playback quality by selecting media data that is subject to discard or delay that has no continuity.
- the playback delay increases in playback by using the playback information to discard or delay the media data. And important recycling is not discarded.
- Embodiment 1 described above relates to playback control as communication data.
- Embodiment 2 will be described in which playback control is performed in the case of playback of, for example, stored coded data during non-communication.
- FIG. 6 is a block diagram showing the configuration of the playback device 21 according to Embodiment 2 in such a case.
- the playback device 21 plays back encoded media data, and stores pre-stored media encoded data having temporal continuity and playback information.
- Unit 16 a reading unit 15 for reading media code key data and reproduction information from the storage unit 16, and a media code key data read by the reading unit 15
- a reproducing unit 14 for reproducing the media data decoded by the decoding unit 13 based on the reproduction information read by the reading unit 15.
- the code key data and the reproduction information are stored in the storage unit 16 of the playback device 21.
- the encoded data and the reproduction information are acquired by a method such as receiving and storing the data transmitted from the transmission device 1 of the first embodiment via the network, and storing in the storage unit 16 in advance.
- the reading unit 15 reads the encoded data and the reproduction information from the storage unit 16, and passes them to the decoding unit 13 and the reproduction unit 14, respectively.
- the decoding unit 13 decodes the encoded data and transfers it to the reproduction unit 14 as media data.
- the playback unit 14 plays back the decrypted media data based on the playback information. At this time, if the playback unit 14 recognizes that there is no effect on the playback quality of the media even if the media data is skipped or delayed by the playback information, such playback control is performed. Is possible.
- the media data can be played back while being thinned out. At that time, it is possible to thin out only the media data that does not deteriorate the reproduction quality by using the reproduction information.
- code-rich data including reproduction information is used as accumulated data, and reproduction control is performed based on reproduction information, so that various reproduction can be performed without causing deterioration in reproduction quality. Control can be performed.
- media playback is performed depending on the interval of received data, but in the case of the playback device 21 that does not depend on communication, the playback interval can be freely changed. Therefore, it may be a force that it is desirable to fast-forward parts that are not important as content, for example, images with little movement.
- the reproducing unit 14 can reproduce only the video with the large amount of variation. Can be provided to the user.
- playback of media data with a small amount of power and change amount is skipped according to playback information, so only important parts of content can be played back.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/015250 WO2006040827A1 (ja) | 2004-10-15 | 2004-10-15 | 送信装置、受信装置、並びに再生装置 |
| JP2006540808A JPWO2006040827A1 (ja) | 2004-10-15 | 2004-10-15 | 送信装置、受信装置、並びに再生装置 |
| US11/628,661 US20070248170A1 (en) | 2004-10-15 | 2004-10-15 | Transmitting Apparatus, Receiving Apparatus, and Reproducing Apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/015250 WO2006040827A1 (ja) | 2004-10-15 | 2004-10-15 | 送信装置、受信装置、並びに再生装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006040827A1 true WO2006040827A1 (ja) | 2006-04-20 |
Family
ID=36148129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/015250 Ceased WO2006040827A1 (ja) | 2004-10-15 | 2004-10-15 | 送信装置、受信装置、並びに再生装置 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20070248170A1 (ja) |
| JP (1) | JPWO2006040827A1 (ja) |
| WO (1) | WO2006040827A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010074524A (ja) * | 2008-09-18 | 2010-04-02 | Konica Minolta Business Technologies Inc | 動画再生装置、動画再生方法および動画再生プログラム |
| JP2015119335A (ja) * | 2013-12-18 | 2015-06-25 | Kddi株式会社 | 動き変化量に応じて撮影動画像のフレームを間引く端末、システム、プログラム及び方法 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101390192B1 (ko) * | 2008-01-17 | 2014-04-29 | 삼성전자주식회사 | 동영상 전송 시스템의 송신 장치 및 수신 장치, 그 버퍼제어 방법 |
| JP2012010263A (ja) * | 2010-06-28 | 2012-01-12 | Sony Corp | 符号化装置、撮像装置、符号化伝送システムおよび符号化方法 |
| US10979744B2 (en) * | 2017-11-03 | 2021-04-13 | Nvidia Corporation | Method and system for low latency high frame rate streaming |
| CN112422514B (zh) * | 2020-10-26 | 2024-06-07 | 深圳Tcl新技术有限公司 | 多媒体数据传输方法、装置、智能家居设备及存储介质 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06153180A (ja) * | 1992-09-16 | 1994-05-31 | Fujitsu Ltd | 画像データ符号化方法及び装置 |
| JPH11252552A (ja) * | 1998-03-05 | 1999-09-17 | Sony Corp | ビデオ信号の圧縮符号化方法及び圧縮符号化装置、並びに、圧縮符号化データの多重化方法及び多重化装置 |
| US6792323B2 (en) * | 2002-06-27 | 2004-09-14 | Openpeak Inc. | Method, system, and computer program product for managing controlled residential or non-residential environments |
-
2004
- 2004-10-15 JP JP2006540808A patent/JPWO2006040827A1/ja active Pending
- 2004-10-15 US US11/628,661 patent/US20070248170A1/en not_active Abandoned
- 2004-10-15 WO PCT/JP2004/015250 patent/WO2006040827A1/ja not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| BABA M. ET AL: "Real Time IP Tsushin ni Tekishita Giji Dokigata Multimedia Saisei Hoshiki (Pseudo synchronus media presentation for real-time IP communication)", FIT 2004 (DAI 3 KAI JOHO KAGAKU GIJUTSU FORUM) KOEN ROBUNSHU, 20 August 2004 (2004-08-20), pages 201 - 202, XP002998966 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010074524A (ja) * | 2008-09-18 | 2010-04-02 | Konica Minolta Business Technologies Inc | 動画再生装置、動画再生方法および動画再生プログラム |
| JP2015119335A (ja) * | 2013-12-18 | 2015-06-25 | Kddi株式会社 | 動き変化量に応じて撮影動画像のフレームを間引く端末、システム、プログラム及び方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070248170A1 (en) | 2007-10-25 |
| JPWO2006040827A1 (ja) | 2008-05-15 |
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