WO2004112420A1 - メディア信号の受信装置、送信装置及び送受信システム - Google Patents
メディア信号の受信装置、送信装置及び送受信システム Download PDFInfo
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- WO2004112420A1 WO2004112420A1 PCT/JP2004/008034 JP2004008034W WO2004112420A1 WO 2004112420 A1 WO2004112420 A1 WO 2004112420A1 JP 2004008034 W JP2004008034 W JP 2004008034W WO 2004112420 A1 WO2004112420 A1 WO 2004112420A1
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- transmission
- media signal
- signal
- control signal
- transmission path
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
- H04W28/14—Flow control between communication endpoints using intermediate storage
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/26—Flow control; Congestion control using explicit feedback to the source, e.g. choke packets
- H04L47/263—Rate modification at the source after receiving feedback
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/30—Flow control; Congestion control in combination with information about buffer occupancy at either end or at transit nodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
Definitions
- the present invention relates to a technique for transmitting and receiving data, and more particularly, to a receiving apparatus, a transmitting apparatus, and a transmitting / receiving system that are suitably applied to the distribution of encoded image / audio data via a wireless transmission path. .
- Another object of the present invention is to provide an apparatus capable of minimizing deterioration of reception quality even when a handover occurs in a receiving apparatus at the time of distributing data such as moving images and audio. is there.
- Still another object of the present invention is to provide a method and apparatus capable of minimizing degradation of reception quality due to handover and the like, and reducing the amount of processing on both the transmission side and the reception side. Is to provide.
- the receiving apparatus monitors the storage amount of the buffer storing the media signal on the receiving side, and the storage amount exceeds a predetermined threshold.
- Control means for outputting a control signal to the transmission line when the power falls below the power level.
- a decoder for taking out data from the buffer and decoding the data is provided, and by controlling the data to be received before the data in the buffer expires, the quality of the decoded media signal is improved. Will be maintained.
- the receiving apparatus of the present invention has a configuration that includes a monitoring unit that monitors a reception status, and a control unit that outputs a control signal to a transmission path when the reception status becomes a predetermined status. I'm sorry. An example of the predetermined situation is a wireless handover.
- the transmission device of the present invention includes a storage unit that stores at least two types of media signals having different bit rates, and a control signal input from a transmission path, and switches the bit rate of the media signal based on the control signal.
- a switching unit that outputs a media signal from the storage unit.
- the transmission device inputs a storage unit that stores at least two or more types of files in which at least two types of media signals of different bit rates are stored, and a transmission path power control signal, and based on the control signal, And an output unit for switching a file to be output and outputting the file from the storage unit.
- the transmitting device includes a storage unit storing the media signal, and a conversion unit that receives a control signal from a transmission line, converts the storage unit media signal into a bit rate based on the control signal, and outputs the converted signal. May be provided.
- the transmission device may be configured to read and output the media signal stored in the storage unit at a time interval different from the time interval at which the media signal is encoded, using the control signal to which the transmission path power is also input.
- a transmission / reception system of the present invention includes the above-described reception device and the above-described transmission device.
- a media signal is transmitted from the transmission device to the reception device via a transmission path, and a control signal is transmitted from the reception device to the transmission device. It is intended to be sent.
- the receiving device includes a monitoring unit that monitors the storage amount of the buffer storing the media signal, and a storage unit that determines whether the storage amount exceeds a predetermined threshold.
- Control means for outputting a control signal to the transmission line when the value falls below the threshold value, wherein the transmission device stores at least two types of media signals of different bit rates, and transmits the control signal from the transmission line.
- the storage means stores at least two or more types of files in which at least two types of media signals of different bit rates are stored, and the output means inputs a control signal from a transmission line and performs control.
- the file may be switched from the storage means and output based on the signal.
- the transmitting device includes a storage unit in which the media signal is stored, and a conversion unit that inputs a control signal from a transmission line, converts the media signal from the storage unit based on the control signal, and outputs the converted bit rate. May be provided.
- the transmitting device inputs the control signal from the storage means in which the media signal is stored and the transmission path, and based on the control signal, transmits the media signal from the storage means at a time interval different from the time interval at which the media signal was encoded.
- the reception device includes: a monitoring unit that monitors a reception status; and a control unit that outputs a control signal to a transmission path when the reception status becomes a predetermined status.
- the transmission device is provided with storage means for storing at least two types of files in which at least two types of media signals of different bit rates are stored, and a transmission path power control signal, which is stored based on the control signal. Means for switching and outputting a file from the means.
- the transmission device includes a storage unit in which the media signal is stored, and a conversion unit that receives the control signal from the transmission line, converts the storage unit media signal into a bit rate based on the control signal, and outputs the converted signal.
- the transmitting device inputs the control signal from the storage means in which the media signal is stored and the transmission path, and based on the control signal, transmits the media signal from the storage means at a time interval different from the time interval at which the media signal is encoded.
- Output means for reading and outputting a signal.
- the fluctuation of the wireless network band and the receiving device of the image and / or audio data are used.
- Deterioration of reception quality due to handover between base stations, for example, disturbance of image quality and sound quality can be minimized.
- the amount of additional processing on the transmitting side and the receiving side for obtaining such an effect can be reduced.
- FIG. 1 is a block diagram showing a configuration of an image data distribution system based on the present invention.
- FIG. 2 is a block diagram showing a configuration of a first example of a data receiving device.
- FIG. 3 is a block diagram showing a configuration of a second example of the data receiving device.
- FIG. 4 is a block diagram showing a configuration of a third example of the data receiving device.
- FIG. 5 is a block diagram showing a configuration of a first example of an image data transmitting device.
- FIG. 6 is a block diagram showing a configuration of a second example of the image data transmitting device.
- FIG. 7 is a block diagram showing a configuration of a third example of the image data transmitting device.
- FIG. 8 is a block diagram showing a configuration of a first example of an image data distribution system.
- FIG. 9 is a block diagram showing a configuration of a second example of the image data distribution system.
- FIG. 10 is a block diagram showing a configuration of a third example of the image data distribution system.
- FIG. 11 is a block diagram showing a configuration of a fourth example of the image data distribution system.
- FIG. 12 is a block diagram showing a configuration of a fifth example of the image data distribution system.
- FIG. 13 is a block diagram showing a configuration of a sixth example of the image data distribution system.
- FIG. 14 is a block diagram showing a configuration of a seventh example of the image data distribution system. BEST MODE FOR CARRYING OUT THE INVENTION
- the present invention is also applicable to real time media signals such as audio encoded data and audio encoded data. It goes without saying that the present invention can be applied using a configuration similar to that described below.
- An image data distribution system according to a preferred embodiment of the present invention shown in FIG. 1 distributes an image data signal and / or an audio data signal as a media signal from a data transmission device to a data reception device via a transmission line 106.
- the media signal includes an image data signal
- the data transmitting apparatus is an image data transmitting apparatus 101.
- the data receiving device is the image data receiving device 107.
- an IP (Internet Protocol) network is constructed on the wireless physical layer, and data is transmitted using UDP (User Datagram Protocol DZlP) as a protocol.
- UDP User Datagram Protocol
- the transmission path 106 is a wireless IP network
- the image data transmitting apparatus 101 is a server connected to the wireless IP network, and uses UDPZIP as a transmission protocol and transmits image encoded data.
- the image data receiving device 107 is a client terminal connected to the wireless IP network, receives image encoded data using UDPZIP, and furthermore, the distribution system transmits the image data from the image data receiving device 107 to the transmission path 106.
- the control signal is transmitted to the image data transmitting apparatus 101 via the image data transmitting apparatus 101, and the image data transmitting apparatus 101 switches the bit rate according to the control signal as described later. Transmitting the coded image data Te.
- the image data receiving device 107 will be described.
- FIG. 2 shows a first example of the image data receiving device.
- the image data receiving device 107A shown in FIG. 2 includes a receiving unit 109, a control unit 108, a code data buffer unit 111, and a decoder 112.
- Receiving section 109 receives the encoded image data from transmission path 106 and stores the encoded image data in encoded data buffer section 111.
- the encoding data buffer unit 111 temporarily stores the received encoded image data, and absorbs packet fluctuations and delay of the packets on the transmission path 106, and converts the received packets into a decoder 112. Output to
- the control unit 108 measures the accumulated amount of the buffer in the encoded data buffer unit 111 at predetermined time intervals.
- the accumulation amount of the buffer indicates the amount of data currently staying in the buffer.
- the control unit 108 sends a control signal to the transmission path 106 when the buffer of the encoded data buffer unit 111 is about to expire. That is, when the buffer storage amount falls below a predetermined threshold value, and when the buffer storage amount exceeds this threshold value, the control unit 108 transmits a control signal to the content data distribution side via the transmission path 106.
- the distribution side is generally an image data transmission device.
- the case where the accumulated amount of the buffer is lower than the threshold value corresponds to the case where the amount of accumulated data in the knocker becomes small and the buffer is almost dead.
- RTCP Real-time Transport Control Protocol
- RFC Request for Comments
- IETF Internet Engineering Task Force
- IETF RTSP Real-time Streaming Protocol
- FIG. 3 shows a second example of the image data receiving device. 3, the same components as those in FIG. 2 are denoted by the same reference numerals, and the description thereof will not be repeated below.
- the image data receiving device 107B shown in FIG. 3 is obtained by adding a wireless state determination unit 110 to the image data receiving device 107A shown in FIG.
- the wireless state determination unit 110 is connected to the transmission path 106 together with the reception unit 109, and the output is connected to the control unit 108.
- the wireless state determination unit 110 monitors the wireless reception state of the transmission path 106 in the image data receiving device 107B, and notifies the control unit 108 when the reception state becomes a predetermined state.
- Control unit 108 having received the notification from wireless state determination unit 110 outputs a control signal to transmission line 106.
- FIG. 4 shows a third example of the image data receiving device.
- the same components as those in FIG. 2 are denoted by the same reference numerals, and the description thereof will not be repeated below.
- the image data receiving device 107C shown in FIG. 4 is obtained by adding a handover determination unit 210 to the image data receiving device 107A shown in FIG.
- the handover determination unit 210 monitors the wireless state of the transmission path 106, and based on the wireless state, changes the wireless reception area (or cell) to which the receiving device 107C belongs from the current wireless reception area to an adjacent area.
- the handover is performed, that is, when a handover occurs, the fact is notified to the control unit 108.
- control section 108 Upon receiving the notification of the handover, control section 108 outputs a control signal to transmission path 106.
- This image data receiving apparatus 107C corresponds to the case where the wireless reception state determined by the wireless state determination unit 110 is handover in the image data receiving apparatus 107B shown in FIG. Next, the image data transmitting apparatus 101 will be described.
- FIG. 5 shows a first example of the image data transmitting apparatus.
- the image data transmitting apparatus 101A shown in FIG. 5 includes an image data storage unit 103, an encoded image data transmitting unit 104, and a control unit 102.
- the image data storage unit 103 stores image data signals of at least two different bit rates (for example, B1 and B2).
- the image data storage unit 103 includes storage areas 121 and 122 corresponding to image data signals of different bit rates.
- the image data is assumed to be one of (1) image data stored in advance and (2) image data generated by encoding in real time.
- the control unit 102 receives a control signal transmitted from the image data receiving device to the transmission line 106 from the transmission line 106, and based on the control signal, a signal for switching the bit rate of image data, that is, a bit rate. Output switching signal.
- Image encoded data transmission section 104 switches the bit rate of the image data in accordance with the bit rate switching signal output from control section 102, encodes the data, and outputs it to transmission path 106.
- image data transmitting apparatus 101A shown in FIG. 5 image encoding data of different bit rates (B1 and B2) are stored as files in image data accumulating section 103, respectively.
- the data transmission unit 104 may be configured to switch the file according to the control signal from the transmission path 106 and output the file to the transmission path 106.
- the image data storage unit 103 does not need to explicitly provide storage areas for each bit rate.
- FIG. 6 shows a second example of the image data transmitting apparatus. 6, the same components as those of FIG. 5 are denoted by the same reference numerals, and the description thereof will not be repeated below.
- the image data transmitting apparatus 101B shown in FIG. 6 is configured by adding the image transcoder 205 to the image data transmitting apparatus 101A shown in FIG.
- the image transcoder 205 inputs image coding data, inputs a control signal from the control unit 102, and changes the bit rate of the input image coding data in real time or non-real time according to the control signal. Then, the image data is output to the image encoded data transmission unit 104.
- Image encoded data transmitting section 104 outputs the image data after bit rate conversion to transmission path 106.
- FIG. 7 shows a third example of the image data transmitting apparatus.
- the same components as those in FIG. 5 are denoted by the same reference numerals, and the description thereof will not be repeated below.
- the image data transmitting apparatus 101C shown in FIG. 7 is the same as the image data transmitting apparatus 101A shown in FIG. 5, but differs in the function of the image encoding data transmitting unit.
- the image encoded data transmitting section 204 receives a control signal from the control section 102, and, in accordance with the control signal, transmits the image encoded data at a time interval ( (Or clock) T at a time interval (or clock) T ′ different from T and output to the transmission line 106
- the image data receiving device and the image data transmitting device used in the image data distribution system of the present embodiment have been described above. Next, a specific example of an image data distribution system configured by combining the image data receiving device and the image data transmitting device will be described.
- FIG. 8 shows a first example of the image data distribution system.
- This image data distribution system includes the image data receiving device 107A shown in FIG. 2 and the image data transmitting device 101A having the configuration shown in FIG.
- the image encoded data receiving unit 109 receives the image encoded data from the transmission line 106 and stores it in the encoded data buffer unit 111.
- the encoding data buffer unit 111 outputs the encoded image data to the decoder 112 after absorbing the packet fluctuation and delay of the packet in the transmission line 106 in the encoded image data.
- the control unit 108 measures the accumulated amount of the buffer in the encoded data buffer unit 111 at predetermined time intervals, and when the buffer is about to expire, that is, the accumulated amount of the buffer reaches a predetermined threshold. If it falls below, a control signal is transmitted to the transmission line 106.
- the image data transmitting apparatus 101A stores image data signals of at least two different bit rates (for example, B1 and B2) in the image data storage unit 103.
- the image The data is either (1) image data stored in advance, or (2) image data generated and encoded in real time.
- control section 102 receives a control signal from transmission path 106 and outputs a signal for switching the bit rate of image data based on the control signal.
- the encoded image data transmitting unit 104 switches and reads the bit rate of the encoded image data stored in the image data storage unit 103 in accordance with the control signal, and outputs the bit rate to the transmission path 106.
- the processing in image data receiving apparatus 107A that receives an image data signal via transmission path 106 includes:
- the control unit 108 monitors the accumulated amount of the buffer for storing the image data, and transmits the control signal when the accumulated amount of the buffer exceeds or falls below a predetermined threshold value. Outputting to the path 106.
- the processing in the image data transmitting apparatus 101A is as follows.
- the image data transmitting device 101A As the image data transmitting device 101A, the image data is stored in the image data storage unit 103 as files of different bit rates (B1 and B2), and the image code is stored in accordance with the control signal.
- the one that the danidata transmission unit 104 switches the file and outputs it to the transmission path 106 can be used.
- the process in the image data transmitting device 101A is used, the process in the image data transmitting device 101A
- the processing in the image data receiving device 107A is the same as described above.
- FIG. 9 shows a second example of the image data distribution system.
- This image data distribution system includes the image data receiving device 107B shown in FIG. 3 and the image data transmitting device 101A having the configuration shown in FIG. 9, the same components as those in FIG. 8 are denoted by the same reference numerals, and the description thereof will not be repeated below.
- the wireless state determination unit 110 of the image data receiving apparatus 107B monitors the wireless reception state of the transmission path 106, and notifies the control unit 108 when the reception state becomes a predetermined state.
- the control unit 108 outputs a control signal to the transmission path 106.
- the processing in the image data transmitting apparatus 101A is as follows.
- the image data receiving device 107C shown in FIG. 4 can be used instead of the image data receiving device 107B.
- Configuration of System Using Image Data Receiving Apparatus 107C A third example system is shown in FIG. When the image data receiving apparatus 107C is used, a control signal is transmitted to the image data transmitting apparatus 101A via the transmission path 106 when the wireless reception status is handover. Therefore, the processing in the image data receiving device 107C in this system is as follows.
- the control unit 108 outputs a control signal to the transmission path 106 when the handover is determined as a result of the monitoring by the handover determination unit 210.
- the processing in the image data transmitting apparatus 101A is the same as that in the system shown in FIG.
- FIG. 11 shows a fourth example of the image data distribution system.
- This image data distribution system includes the image data receiving device 107A shown in FIG. 2 and the image data transmitting device 101B having the configuration shown in FIG. 11, the same components as those in FIG. 8 are denoted by the same reference numerals, and the description thereof will not be repeated below.
- the image transcoder 205 inputs the image encoded data, inputs the control signal from the control unit 102, and adjusts the bit rate of the input image encoded data according to the control signal.
- the image data is converted and output to the image encoded data transmission unit 104.
- Image encoded data transmitting section 104 outputs the image encoded data after bit rate conversion to transmission path 106.
- processing in image data receiving apparatus 107A that receives an image data signal via transmission path 106 includes:
- the processing in the image data transmitting apparatus 101B is as follows.
- FIG. 12 shows a fifth example of the image data distribution system.
- This image data distribution system includes the image data receiving device 107B shown in FIG. 3 and the image data transmitting device 101B having the configuration shown in FIG. 12, the same components as those in FIG. 8 are denoted by the same reference numerals, and the description thereof will not be repeated below.
- the wireless state determination unit 110 of the image data receiving device 107B monitors the wireless reception state of the transmission path 106, and notifies the control unit 108 when the reception state becomes a predetermined state.
- the control unit 108 outputs a control signal to the transmission path 106.
- Image data transmission The image transcoder 205 of the device 101B receives the encoded image data, receives a control signal from the control unit 102, converts the encoded image data input from the storage unit 103 according to the control signal, and converts the bit rate thereof. Is output to the image coded data transmission unit 104.
- Image encoded data transmitting section 104 outputs the image encoded data after the bit rate conversion to transmission path 106.
- the processing executed by the image data receiving device 107B in this distribution system includes:
- the processing executed by the image data transmitting apparatus 101B includes:
- the method includes a step of receiving a control signal from the transmission path 106 and converting the bit rate of the image data from the storage unit 103 that stores the image data based on the control signal and outputting the converted image data.
- the image data receiving device 107C shown in FIG. 4 can be used instead of the image data receiving device 107B.
- the control signal is transmitted to the image data transmitting device 101B via the transmission path 106 when the wireless reception status is handover.
- FIG. 13 shows a sixth example of the image data distribution system.
- This image data distribution system includes the image data receiving device 107A shown in FIG. 2 and the image data transmitting device 101C having the configuration shown in FIG.
- the same components as those in FIG. 8 are denoted by the same reference numerals, and the description thereof will not be repeated below.
- encoded image data receiving section 109 receives the encoded image data from transmission line 106 and stores the encoded image data in encoded data buffer section 111.
- the coded data buffer unit 111 outputs the coded image data to the decoder 112 after absorbing the fluctuation of the packet on the transmission path and the late arrival of the packet.
- the control unit 108 measures the accumulated amount of the buffer of the coded data buffer unit 111 at predetermined time intervals, and sends a control signal to the transmission line 106 when the buffer is about to be exhausted.
- the image coded data transmission unit 204 of the image data transmission device 101C receives the control signal transmitted to the image data reception device 107A power transmission line 106 from the control unit 102, and outputs the image code.
- the encoded data is read from the storage unit 103 at a time interval (or clock) T ′ different from the time interval (clock or T) used for encoding, and is output to the transmission path 106.
- the process executed by the image data receiving device 107A includes:
- a step of inputting a control signal from the transmission path reading the image data stored in the storage unit 103 from the storage unit 103 at a time interval different from the time interval in which the image data was encoded, and outputting the image data according to the control signal.
- FIG. 14 shows a seventh example of the image data distribution system.
- This image data distribution system includes the image data receiving device 107B shown in FIG. 3 and the image data transmitting device 101C having the configuration shown in FIG. 14, the same components as those in FIG. 8 are denoted by the same reference numerals, and the description thereof will not be repeated below.
- the wireless state determination unit 110 of the image data receiving apparatus 107B monitors the wireless reception state of the transmission path 106, and notifies the control unit 108 when the reception state becomes a predetermined state. 108 outputs a control signal to the transmission path 106.
- the image coded data transmission unit 204 of the image data transmission device 101C receives the control signal transmitted to the image data reception device 107A power transmission line 106 from the control unit 102, and uses the image coded data for encoding. At the time interval (or clock) T ′ different from the time interval (clock or ⁇ ) T ′, the data is read from the storage unit 103 and output to the transmission path 106.
- the process executed by the image data receiving device 107B includes:
- a control signal is input from the transmission path 106, and the image data stored in the storage unit 103 is stored in the storage unit 103 at a time interval different from the time interval in which the image data was encoded by the control signal. And outputting the data.
- the image data receiving device 107C shown in FIG. 4 can be used instead of the image data receiving device 107B.
- a control signal is transmitted to the image data transmitting apparatus 101C via the transmission path 106 when the wireless reception status is a handover.
- each of the image data receiving device and the image data transmitting device can be realized using a computer. That is, by executing the program on the computer, the processing and control in the image data receiving device and the image data transmitting device described above can be realized.
- the computer includes a processor and a controller.
- the program is read into the computer via a network or via a recording medium such as a CD-ROM storing the program.
- the present invention also includes such a program, program product, or recording medium. Further, a medium for transmitting such a program is also included in the scope of the present invention.
- Processing for monitoring the reception status from the transmission path A process of outputting a predetermined control signal to the transmission path when the reception status is a wireless handover;
- a process of encoding the output media signal and transmitting the encoded media signal to the transmission path is a process of encoding the output media signal and transmitting the encoded media signal to the transmission path.
Abstract
Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US10/560,306 US20070115815A1 (en) | 2003-06-11 | 2004-06-09 | Receiver, transmitter and transmission/reception system for media signal |
EP20040745709 EP1633161A4 (en) | 2003-06-11 | 2004-06-09 | MEDIUM SIGNAL RECEPTION DEVICE, TRANSMITTER AND TRANSMIT / RECEIVER SYSTEM |
CA002528331A CA2528331A1 (en) | 2003-06-11 | 2004-06-09 | Medium signal reception device, transmission device, and transmission/reception system |
JP2005506907A JP4909590B2 (ja) | 2003-06-11 | 2004-06-09 | メディア信号の受信装置、送信装置及び送受信システム |
Applications Claiming Priority (2)
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JP2003-166710 | 2003-06-11 | ||
JP2003166710 | 2003-06-11 |
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WO2004112420A1 true WO2004112420A1 (ja) | 2004-12-23 |
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US (1) | US20070115815A1 (ja) |
EP (1) | EP1633161A4 (ja) |
JP (1) | JP4909590B2 (ja) |
KR (1) | KR20060016809A (ja) |
CN (1) | CN1806456A (ja) |
CA (1) | CA2528331A1 (ja) |
WO (1) | WO2004112420A1 (ja) |
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US7706266B2 (en) * | 2007-03-12 | 2010-04-27 | Citrix Systems, Inc. | Systems and methods of providing proxy-based quality of service |
FR2917933B1 (fr) * | 2007-06-25 | 2009-10-30 | Baracoda Sa | Decodeur de flux dvb. |
CN101911685B (zh) * | 2007-12-29 | 2012-06-27 | 中兴通讯股份有限公司 | 一种视频数据的接收和播放方法 |
KR101220176B1 (ko) * | 2008-12-22 | 2013-01-11 | 한국전자통신연구원 | 이종 망간 핸드오버에 대한 적응형 미디어 전송 제어 시스템 및 방법 |
WO2016015231A1 (en) | 2014-07-29 | 2016-02-04 | SZ DJI Technology Co., Ltd. | System and method for dynamically adjusting recording bitrate to accommodate writing speed of storage device |
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- 2004-06-09 JP JP2005506907A patent/JP4909590B2/ja not_active Expired - Fee Related
- 2004-06-09 US US10/560,306 patent/US20070115815A1/en not_active Abandoned
- 2004-06-09 EP EP20040745709 patent/EP1633161A4/en not_active Withdrawn
- 2004-06-09 CN CNA2004800161188A patent/CN1806456A/zh active Pending
- 2004-06-09 CA CA002528331A patent/CA2528331A1/en not_active Abandoned
- 2004-06-09 KR KR20057023748A patent/KR20060016809A/ko not_active Application Discontinuation
- 2004-06-09 WO PCT/JP2004/008034 patent/WO2004112420A1/ja active Application Filing
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Also Published As
Publication number | Publication date |
---|---|
US20070115815A1 (en) | 2007-05-24 |
JPWO2004112420A1 (ja) | 2006-07-20 |
CN1806456A (zh) | 2006-07-19 |
CA2528331A1 (en) | 2004-12-23 |
JP4909590B2 (ja) | 2012-04-04 |
KR20060016809A (ko) | 2006-02-22 |
EP1633161A4 (en) | 2011-05-11 |
EP1633161A1 (en) | 2006-03-08 |
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