WO2017098950A1 - 受信装置、及び、データ処理方法 - Google Patents
受信装置、及び、データ処理方法 Download PDFInfo
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- 238000003672 processing method Methods 0.000 title claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 209
- 230000003111 delayed effect Effects 0.000 claims abstract description 32
- 230000001934 delay Effects 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 63
- 238000005259 measurement Methods 0.000 claims description 21
- 238000005516 engineering process Methods 0.000 abstract description 37
- 238000012545 processing Methods 0.000 description 173
- 238000000034 method Methods 0.000 description 55
- 230000015654 memory Effects 0.000 description 34
- 238000010586 diagram Methods 0.000 description 9
- 238000007796 conventional method Methods 0.000 description 8
- 230000002194 synthesizing effect Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- 238000012937 correction Methods 0.000 description 5
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- 238000012986 modification Methods 0.000 description 3
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- 230000000694 effects Effects 0.000 description 2
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- 230000007257 malfunction Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
- H04L7/0033—Correction by delay
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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
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/18—Arrangements for synchronising broadcast or distribution via plural systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
Definitions
- the present technology relates to a receiving device and a data processing method, and more particularly, to a receiving device and a data processing method that can perform delay compensation with a more simplified configuration.
- channel bonding (Channel bonding) is known in which multiple channels are combined and used.
- channel bonding is also expected to be adopted in the next generation ATSC (Advanced Television Systems Committee) standard called ATSC3.0 (see, for example, Non-Patent Document 1).
- a broadcast wave (radio wave) transmitted from a transmission facility may cause a propagation delay according to the distance from the transmission point to the reception point.
- broadcast waves transmitted from different transmission facilities have different propagation delay amounts depending on the distance to the reception point.
- the receiver needs to compensate for the delay in order to prevent malfunction, but it is desirable that the circuit configuration for performing the delay compensation be a simplified configuration. For this reason, a proposal for performing delay compensation with a more simplified configuration has been demanded.
- the present technology has been made in view of such a situation, and makes it possible to perform delay compensation with a more simplified configuration.
- a receiving device is transmitted on a reference transmission path among the plurality of transmission paths based on time information included in a packet transmitted for each of a plurality of transmission paths including a broadcast path.
- Delay compensation that compensates for a delay between packets transmitted for each of the plurality of transmission paths by delaying other packets transmitted on a transmission path other than the reference transmission path with respect to the reference packet It is a receiver provided with a part.
- the receiving device may be an independent device or an internal block constituting one device.
- a data processing method is a data processing method corresponding to the above-described receiving device according to one aspect of the present technology.
- the reference of the plurality of transmission paths is based on time information included in a packet transmitted for each of a plurality of transmission paths including a broadcast path. By delaying other packets transmitted on other transmission paths other than the reference transmission path with respect to the reference packets transmitted on the other transmission paths, packets transmitted between the plurality of transmission paths The delay is compensated.
- delay compensation can be performed with a more simplified configuration.
- FIG. 1 is a diagram illustrating a configuration of an embodiment of a transmission system to which the present technology is applied.
- the system refers to a logical collection of a plurality of devices.
- the transmission system 1 includes a transmission device 10 and a reception device 20.
- data transmission conforming to a broadcasting system such as ATSC3.0 is performed.
- the transmission device 10 is a transmitter compatible with a broadcasting system such as ATSC 3.0, and transmits (transmits) content via the transmission path 30.
- the transmission apparatus 10 transmits a broadcast stream including video, audio, and the like (components thereof) and signaling constituting content such as a broadcast program and the like as a broadcast wave (radio wave) via the transmission path 30.
- the receiving device 20 is a receiver compatible with a broadcasting system such as ATSC 3.0, and receives and outputs content transmitted from the transmitting device 10 via the transmission path 30.
- the reception device 20 receives broadcast waves (radio waves) from the transmission device 10, processes video and audio (components thereof) included in the broadcast stream, and signaling (such as broadcast programs). Play content video and audio.
- the transmission path 30 is not only terrestrial (terrestrial broadcast), but also, for example, satellite broadcasting using a broadcasting satellite (BS: Broadcasting) Satellite) or communication satellite (CS: Communications Satellite), or cable. It may be cable broadcasting (CATV) using BS: Broadcasting) Satellite
- BS Broadcasting Satellite
- CS Communications Satellite
- CATV cable broadcasting
- FIG. 2 is a diagram showing the concept of channel bonding.
- channel bonding In digital broadcasting, channel bonding is known in which a plurality of channels (frequency bands) are combined and used. For example, in the DVB-C2 (Digital Video Broadcasting -Cable Second Generation) standard, PLP bundling is defined as one of channel bonding. In addition, channel bonding is expected to be adopted in ATSC 3.0, which is one of the next generation broadcasting systems.
- DVB-C2 Digital Video Broadcasting -Cable Second Generation
- PLP bundling is defined as one of channel bonding.
- ATSC 3.0 is one of the next generation broadcasting systems.
- a high data rate stream is divided into a plurality of (channel) divided streams and transmitted, while on the receiving side, a plurality of divided streams are converted into the original streams. Operation such as restoration (recombination) to a data rate stream becomes possible.
- IP Internet Protocol
- MPEG2-TS Transport Stream
- an input formatting unit (InputtingFormatting) 101 performs necessary processing on an input stream (Input Packet Stream) input thereto, and a packet storing data obtained thereby is converted into a PLP (Physical Process to distribute to Layer Pipe). Data processed by the input format unit 101 is output to the dividing unit 102.
- the partition unit (Stream Partitioner) 102 distributes the data for each PLP input from the input format unit 101 for each RF channel, and sends the data to the BICM (Bit Interleaved Coding and Modulation) processing unit 103 according to the sequence of the RF channel. Output.
- BICM Bit Interleaved Coding and Modulation
- the BICM processing unit 103-1 performs processing such as error correction processing, bit interleaving, and orthogonal modulation on the PLP RF1 data from the dividing unit 102.
- the data processed by the BICM processing unit 103-1 is output to the time interleave processing unit 104-1.
- the time interleave processing unit (Time Interleaver) 104-1 performs interleaving processing in the time direction on the data input from the BICM processing unit 103-1.
- the data processed by time interleaving processing section 104-1 is output to frame / frequency interleaving processing section 105-1.
- a frame / frequency interleaver (Frame & Frequently Interleaver) 105-1 performs processing such as generation of a physical layer frame and interleaving in the frequency direction on the data input from the time interleave processor 104-1.
- the data processed by the frame / frequency interleave processing unit 105-1 is supplied to the OFDM processing unit 106-1.
- the OFDM processing unit 106-1 processes the data input from the frame / frequency interleaving processing unit 105-1, generates an OFDM (Orthogonal Frequency Division Multiplexing) signal corresponding to the physical layer frame, and generates an RF channel 1 (RF1 ) Including broadcast waves).
- OFDM Orthogonal Frequency Division Multiplexing
- the BICM processing unit 103-2 to OFDM processing unit 106-2 have the same functions as the BICM processing unit 103-1 to OFDM processing unit 106-1 described above.
- processing for the PLP RF2 data from the dividing unit 102 is performed, so that an OFDM signal corresponding to the PLP RF2 data is generated, and the RF channel 2 ( The broadcast wave including RF2) is transmitted through the transmission line 30.
- data can be transmitted by using a plurality of channels such as RF channel 1 (RF1) and RF channel 2 (RF2) by channel bonding.
- RF1 RF channel 1
- RF2 RF channel 2
- FIG. 3 is a diagram illustrating channel bonding processing in the transmission apparatus 10.
- the dividing unit 102 processes a BB (Baseband) packet (hereinafter also referred to as BBP (Baseband Packet)) input from the input format unit 101 according to a sequence of the RF channel 1 (RF1). And the physical layer processing unit 111-2 according to the RF channel 2 (RF2) sequence.
- BBP Baseband Packet
- the extension header of each BB packet includes a BBP counter indicating the order of the BB packets. Details of the BBP counter will be described later with reference to FIGS.
- the physical layer processing unit 111-1 corresponds to the BICM processing unit 103-1 to the OFDM processing unit 106-1 in FIG. 2, and performs physical layer processing related to the physical layer.
- this physical layer processing for example, error correction processing, bit interleaving, orthogonal modulation, time direction and frequency direction interleaving, and the like are performed, so that an OFDM signal corresponding to the physical layer frame is generated, and RF channel 1 (RF1) Is transmitted by broadcast waves including
- the physical layer processing unit 111-2 corresponds to the BICM processing unit 103-2 to the OFDM processing unit 106-2 in FIG. 2, performs physical layer processing on the physical layer, and an OFDM signal corresponding to the physical layer frame is RF Transmitted by broadcast waves including channel 2 (RF2).
- RF2 channel 2
- the target input stream is divided into a plurality of divided streams, and the RF channel 1 (RF1), the RF channel 2 (RF2), etc. Transmission can be performed using a plurality of channels.
- FIG. 4 is a diagram illustrating channel bonding processing in the receiving device 20.
- an OFDM signal transmitted by a broadcast wave including the RF channel 1 (RF1) from the transmitting device 10 is received and input to the physical layer processing unit 201-1.
- the receiving device 20 receives the OFDM signal transmitted by the broadcast wave including the RF channel 2 (RF2) from the transmitting device 10 and inputs it to the physical layer processing unit 201-2.
- the physical layer processing unit 201-1 performs physical layer processing related to the physical layer on the OFDM signal transmitted by the broadcast wave including the RF channel 1 (RF 1). By this physical layer processing, processing related to the physical layer frame, frequency direction and time direction deinterleaving, orthogonal demodulation, bit deinterleaving, error correction processing, and the like are performed, so that the BB packet is extracted. BBP # 1, BBP # 3, BBP # 5,... Extracted by the physical layer processing unit 201-1 are held in the buffer memory 202-1 in that order.
- the physical layer processing unit 201-2 performs physical layer processing on the OFDM signal transmitted by the broadcast wave including the RF channel 2 (RF2), and BBP # 2, BBP # 4, ... extracted by the physical layer processing. Are held in the buffer memory 202-2 in that order.
- the buffer memory 202-1 holds BBP # 1, BBP # 3, BBP # 5,... In that order, and the buffer memory 202-2 holds BBP # 2, BBP # 4,.
- the extension header of the BB packet includes a BBP counter indicating the order of the BB packet, and this BBP counter is supplied to the combining unit 203 for each BB packet. Details of the BBP counter will be described later with reference to FIGS.
- the synthesizing unit 203 reads and outputs the BB packet from the buffer memory 202-1 or the buffer memory 202-2 according to the BB counter. For example, the synthesizing unit 203 holds the buffer memory 202-1 for holding BBP # 1, BBP # 3, BBP # 5,..., And BBP # 2, BBP # 4,. By alternately reading BB packets from the buffer memory 202-2, BBP # 1, BBP # 2, BBP # 3, BBP # 4, BBP # 5,... Are output in that order.
- the order in which the BB packets are extracted varies depending on, for example, parameters of the physical layer and the implementation of the transmission device 10 and the reception device 20, but by using a BBP counter included in the extension header of the BB packet. It is possible to rearrange them in the correct order.
- the physical layer parameters include, for example, parameters that are set when interleaving in the time direction is performed by the time interleaving processing unit 104 (FIG. 2).
- the receiving apparatus 20 performs a channel bonding process, and thereby, a plurality of divided streams transmitted using a plurality of channels such as the RF channel 1 (RF1) and the RF channel 2 (RF2).
- RF1 RF channel 1
- RF2 RF channel 2
- the above-described physical layer frame is also referred to as a broadcast packet (physical layer packet).
- the broadcast packet has a meaning as a packet transmitted through a broadcast route in addition to a physical layer packet (a packet processed in the physical layer).
- BBP counter configuration (BBP counter configuration)
- the configuration of the BBP counter will be described with reference to FIGS.
- FIG. 5 shows the structure of a BB packet (BBP: Baseband packet).
- BBP Baseband packet
- a BB packet is composed of a BBP header and a payload.
- BBP header in addition to a 1- or 2-byte basic field (Base Field), an optional field (Optional Field) and an extension field (Extension Field) can be arranged.
- Basic Field Basic Field
- Optional Field optional field
- Extension Field Extension Field
- the pointer information is information for indicating the position of an ALP (ATSCATLink-layer Protocol) packet arranged in the payload of the BB packet.
- ALP ATCATLink-layer Protocol
- the optional field flag (OFI) is information indicating whether an optional field (Optional Field) and an extension field (Extension Field) are arranged to extend the header.
- the optional field flag (OFI) is set to "10" or “11” and the long extension mode (Long Extension Mode) Or it becomes mixed extension mode (Mixed
- 3-bit extension type information (EXT_TYPE) is set at the head of the optional field (“A” in FIG. 5).
- the extension field (ExtensionExtField) corresponds to the number of bytes set in the 5-bit extension length information (EXT_LEN).
- a BBP counter (Counter) is arranged (“A” in FIG. 7).
- 3-bit extension type information (EXT_TYPE) or extension number information (NUM_EXT) is set at the beginning of the optional field (“A” in FIG. 5).
- a BBP counter (Counter) corresponding to the number of bytes set in the extension field (Extension) by 13-bit extension length information (EXT_LEN) ) are arranged ("A" in FIG. 7).
- the BBP counter indicating the order of the BB packets can be included in the extension header of the BB packet (extension field of the BBP header).
- FIG. 8 is a diagram for explaining an outline of propagation delay of channel bonding.
- the transmission apparatus 10 of the broadcasting station divides the input stream into two divided streams, and broadcast waves (radio waves) including the OFDM signal are transmitted from the transmitting station 40-1 and the transmitting station 40-2, respectively.
- the state of being sent out is schematically shown.
- a transmitting station 40-1 and a transmitting station 40-2 are transmission facilities installed at different locations.
- Broadcast waves (broadcast waves including RF channel 1) transmitted (transmitted) from transmitting station 40-1 and broadcast waves (broadcast waves including RF channel 2) transmitted (transmitted) from transmitting station 40-2 are:
- the signal is received by the antenna 50 installed in the house and processed by the receiving device 20 (for example, a television receiver) installed in the house.
- the receiving device 20 transmits a packet (hereinafter also referred to as a broadcast packet P1) transmitted from a broadcasting wave from the transmitting station 40-1 and a packet (hereinafter referred to as a broadcasting packet) transmitted from the transmitting station 40-2.
- a packet hereinafter also referred to as a broadcast packet P1
- a broadcasting packet transmitted from the transmitting station 40-2.
- the original stream is restored (recombined) from the two divided streams.
- each broadcast wave transmitted from each transmitting station has a different propagation delay amount.
- a broadcast packet received by the receiving device 20 has a different propagation delay amount for each transmission path. And in the receiving apparatus 20, even if the broadcast packet having such a different propagation delay amount is processed, the original stream cannot be correctly restored (recombined) from the plurality of divided streams. It is necessary to compensate for the propagation delay.
- the time information is added to the broadcast packet storing the data of the divided stream transmitted for each of the plurality of transmission paths, and the propagation delay for each transmission path is used by using the time information.
- the propagation delay can be compensated by measuring the difference value of the quantity.
- a broadcast packet P1 transmitted by a broadcast wave from the transmitting station 40-1 is composed of a payload (Payload1) and a preamble (Preamble), and this preamble includes time information.
- a broadcast packet P2 transmitted by a broadcast wave from the transmitting station 40-2 is composed of a payload (Payload2) and a preamble (Preamble), and this preamble also includes time information.
- the broadcast packet P1 transmitted by the broadcast wave from the transmitting station 40-1 and the broadcast packet P2 transmitted by the broadcast wave from the transmitting station 40-2 have a propagation delay amount. Therefore, the receiving device 20 has different timings at which those broadcast packets are input (received).
- the broadcast packet P2 transmitted by the broadcast wave from the transmitting station 40-2 is input (received) before the broadcast packet P1 transmitted by the broadcast wave from the transmitting station 40-1. .
- the difference ( ⁇ t 12 ) between the leading times of the broadcast packet P1 and the broadcast packet P2 input (received) at different timings is the propagation delay time T1 in the broadcast wave transmitted from the transmitting station 40-1. This corresponds to the difference (T1-T2) from the propagation delay time T2 in the broadcast wave transmitted from the transmitting station 40-2. If the time difference ( ⁇ t 12 ) of these broadcast packets becomes 0, the difference (T1-T2) between the propagation delay time T1 and the propagation delay time T2 also becomes 0, resulting in transmission. It is possible to compensate for a different propagation delay amount for each path.
- the preambles of the broadcast packet P1 and the broadcast packet P2 include time information.
- This time information indicates the time when the target broadcast packet is transmitted from the transmission device 10, that is, the transmitting station 40-1. Or the time (absolute time) transmitted from the transmitting station 40-2 is shown.
- the same time t1 is used for the preamble of the broadcast packet P1 transmitted by the broadcast wave from the transmitting station 40-1 and the preamble of the broadcast packet P2 transmitted by the broadcast wave from the transmitting station 40-2.
- Each of the time information shown is included.
- receiving apparatus 20 that receives broadcast waves transmitted from transmitting station 40-1 and transmitting station 40-2 via antenna 50, a delay between broadcast packets having time information indicating the same time t1. If the (delay between broadcast packet P1 and broadcast packet P2 in FIG. 9) is eliminated, a different propagation delay amount is compensated for each transmission path. Then, the receiving apparatus 20 can correctly restore (recombine) the original stream from the plurality of divided streams by processing the broadcast packet in which the propagation delay amount is compensated.
- the broadcast packet (for example, broadcast packet P2 in FIG. 9) is delayed until a broadcast packet (for example, broadcast packet P1 in FIG. 9) that is subsequently input (received) is input (received).
- the delay between these packets (for example, the delay between the broadcast packet P1 and the broadcast packet P2 in FIG. 9) is eliminated (the delay is set to 0).
- the broadcast packet transmitted for each of a plurality of transmission paths, and the broadcast packet P1 that is the latest among the broadcast packets having time information indicating the same time is used as a reference packet, and the other packets are transmitted.
- the packet (broadcast packet P2) is delayed.
- the receiving apparatus 20 compensates for a different propagation delay amount for each of a plurality of transmission paths including a broadcast path.
- FIG. 10 shows a configuration example of a propagation delay compensation unit 211 for compensating for a propagation delay amount that is different for each transmission path in the reception device 20.
- the propagation delay compensation unit 211 is a broadcast packet transmitted for each of a plurality of transmission paths, and in order to eliminate a delay between broadcast packets including time information indicating the same time, a propagation delay amount measurement unit 221, a delay A section 222-1 and a delay section 222-2.
- the broadcast packet P1 transmitted by the broadcast wave from the transmitting station 40-1 and the broadcast packet P2 transmitted by the broadcast wave from the transmitting station 40-2 have different propagation delay amounts.
- the input (reception) timing at the receiving device 20 is different.
- the propagation delay amount measuring unit 221 monitors the broadcast packet transmitted by the broadcast wave transmitted from the transmitting station 40-1 and the transmitting station 40-2, thereby detecting the start time of the broadcast packet P1 and the broadcast packet.
- the difference ( ⁇ t 12 ) from the beginning time of packet P2 is measured.
- the propagation delay amount measuring unit 221 measures the time difference ( ⁇ t 12 ) of these broadcast packets, so that the propagation delay time T1 in the broadcast wave transmitted from the transmitting station 40-1 and the transmitting station 40 are measured.
- the propagation delay amount measuring unit 221 supplies the delay time corresponding to the difference (T1-T2) in the propagation delay amount to the delay unit 222-1 or the delay unit 222-2.
- a broadcast packet P1 transmitted by a broadcast wave from the transmission station 40-1 is input to the delay unit 222-1, and a delay unit 222-2 is input from the transmission station 40-2.
- a broadcast packet P2 transmitted through a broadcast wave is input. Further, since the delay time from the propagation delay amount measurement unit 221 is supplied to the delay unit 222-1 or the delay unit 222-2, the input broadcast packet P1 or broadcast packet P2 is determined according to this delay time. Will be delayed.
- the broadcast packet P2 transmitted by the broadcast wave from the transmitting station 40-2 is input first, and then the broadcast packet P1 transmitted by the broadcast wave from the transmitting station 40-1 is input.
- the propagation delay amount measuring unit 221 measures the difference ( ⁇ t 12 ) between the input times of the broadcast packet P1 and the broadcast packet P2, thereby obtaining the difference (T1-T2) in the propagation delay amount of those broadcast packets.
- the corresponding delay time is supplied to the delay unit 222-2.
- the delay unit 222-2 delays the broadcast packet P2 transmitted by the broadcast wave from the transmission station 40-2 according to the delay time from the propagation delay amount measurement unit 221. That is, in the delay unit 222-2, the broadcast packet P2 is transmitted until the broadcast packet P1 transmitted by the broadcast wave from the transmitting station 40-1 is input to the propagation delay compensation unit 211 (the delay unit 222-1). Delayed.
- the propagation delay compensation unit 211 when the broadcast packet P1 transmitted by the broadcast wave from the transmission station 40-1 is input, the broadcast packet P1 that has passed through the delay unit 222-1 and the delay unit 222-2.
- the broadcast packet P2 delayed at the same time is output at the same time.
- the broadcast packet P1 transmitted by the broadcast wave from the transmitting station 40-1 is output as it is without being delayed by the delay unit 222-1 (with 0 delay).
- the broadcast packet P1 transmitted for each of a plurality of transmission paths (routes via the transmission station 40-1 and the transmission station 40-2), which has the same time information indicating the time t1, and the broadcast packet
- the delay becomes 0 the delay becomes 0
- a different propagation delay amount is compensated for each of a plurality of transmission paths (routes through the transmitting station 40-1 and the transmitting station 40-2).
- the receiving device 20 measures a propagation delay time T1 in the broadcast wave transmitted from the transmitting station 40-1 and a propagation delay time T2 in the broadcast wave transmitted from the transmitting station 40-2. However, if the propagation delay time (T1 or T2) for each transmission path can be estimated, the propagation delay can be compensated using the estimation result. However, if the propagation delay time is estimated, a circuit for estimating the propagation delay time, complicated processing, and the like are required.
- the propagation delay amount (delay amount) between broadcast packets including time information indicating the same time is simply measured indirectly using time information added to the broadcast packet. According to the measurement result, the propagation delay can be compensated only by delaying a specific packet. That is, according to the present technology, it is possible to perform delay compensation (propagation delay compensation) with a more simplified configuration without requiring a circuit for estimating the propagation delay time or complicated processing. Further, the present technology has a merit that control can be easily performed because the configuration can be simplified.
- FIG. 11A shows a configuration of the conventional method 1.
- the signal input unit 231-1 processes the OFDM signal transmitted by the broadcast wave (broadcast wave including the RF channel 1) input from the transmitting station 40-1,
- the data is output to the processing unit 232-1.
- the signal processing unit 232-1 performs physical layer processing on the data from the signal input unit 231-1 and outputs the data to the synthesis unit 203. However, in this physical layer processing, processing relating to a physical layer frame (physical layer packet), deinterleaving processing, error correction processing, and the like are performed.
- the signal input unit 231-2 processes the OFDM signal transmitted by the broadcast wave (broadcast wave including the RF channel 2) input from the transmitting station 40-2, and the signal processing unit 232-2 Output to 2.
- the signal processing unit 232-2 performs physical layer processing on the data from the signal input unit 231-2 and outputs the data to the synthesis unit 203.
- the synthesizing unit 203 rearranges the broadcast packets input from the signal input unit 231-1 and the broadcast packets input from the signal input unit 231-2, and outputs them to the signal output unit 233.
- the signal output unit 233 performs necessary processing on the broadcast packet (sorted broadcast packet) input from the combining unit 203 and outputs data obtained thereby to a subsequent circuit.
- the broadcast packet transmitted for each of the plurality of transmission paths is processed, but since the propagation delay compensation process is not performed, the broadcast packet processed by the receiving device 20 is Each transmission path has a different propagation delay amount. For this reason, the receiving apparatus 20 cannot correctly restore (recombine) the original stream from the plurality of divided streams even if the broadcast packet having such different propagation delay amounts is processed.
- FIG. 11B shows the configuration of the conventional method 2.
- buffer memories are provided in the front and rear stages of the signal processing unit 232 as compared with the configuration in A of FIG. 11. That is, data from the signal input unit 231-1 is held in the buffer memory 241-1, and data from the signal input unit 231-2 is held in the buffer memory 241-2.
- the signal processing unit 232 appropriately reads the data held in the buffer memory 241-1 or the buffer memory 241-2, and performs physical layer processing.
- a broadcast packet obtained by physical layer processing for data from the buffer memory 241-1 is held in the buffer memory 242-1 and broadcast obtained by physical layer processing for data from the buffer memory 241-2.
- the packet is held in the buffer memory 242-2.
- the synthesizing unit 203 appropriately reads out the broadcast packets held in the buffer memory 242-1 or the buffer memory 242-2, rearranges the broadcast packets processed by the signal processing unit 232, and outputs them to the signal output unit 233.
- the signal output unit 233 performs necessary processing on the broadcast packet (sorted broadcast packet) input from the combining unit 203 and outputs data obtained thereby to a subsequent circuit.
- the conventional method 2 by providing buffer memories before and after the signal processing unit 232, data from a plurality of streams is processed by one signal processing unit 232 by a so-called time division method. To restore the original sequence.
- the conventional method 2 as compared with the above-described conventional method 1, the physical layer processing by the signal processing unit 232 is performed in time division for each series, so that the number of circuits can be reduced.
- the receiving apparatus 20 cannot correctly restore (recombine) the original stream from the plurality of divided streams even if the broadcast packet having such different propagation delay amounts is processed.
- FIG. 12 illustrates a configuration example when the method 1 of the present technology is employed.
- a propagation delay compensation unit 211 is provided between the signal processing unit 232-1 and the signal processing unit 232-2, and the synthesis unit 203, as compared with the configuration of FIG. Yes.
- the propagation delay compensation unit 211 includes a propagation delay amount measurement unit 221, a delay unit 222-1, and a delay unit 222-2. Note that the delay unit 222-1 and the delay unit 222-2 correspond to the buffer memory 202-1 and the buffer memory 202-2 in FIG. 4 described above.
- the signal input unit 231-1 processes the OFDM signal transmitted by the broadcast wave (broadcast wave including the RF channel 1) transmitted from the transmitting station 40-1 input thereto, and the signal processing unit 232-2. Output to 1.
- the signal processing unit 232-1 performs physical layer processing on the data from the signal input unit 231-1 and outputs a broadcast packet (BB packet) obtained thereby to the delay unit 222-1 of the propagation delay compensation unit 211. .
- BB packet broadcast packet
- processing relating to a physical layer frame (physical layer packet), deinterleaving processing, error correction processing, and the like are performed.
- the signal input unit 231-2 processes the OFDM signal transmitted by the broadcast wave (broadcast wave including the RF channel 2) transmitted from the transmitting station 40-2, and is input to the signal input unit 231-2. Output to 2.
- the signal processing unit 232-2 performs physical layer processing on the data from the signal input unit 231-2, and outputs a broadcast packet (BB packet) obtained thereby to the delay unit 222-2 of the propagation delay compensation unit 211. .
- the propagation delay amount measurement unit 221 is processed by the broadcast packet P1 (FIG. 9, FIG. 10, etc.) processed by the signal processing unit 232-1 and the signal processing unit 232-2.
- Broadcast packet P2 (FIG. 9, FIG. 10, etc.) is monitored, and the difference ( ⁇ t 12 ) in the input time (reception time) of broadcast packets having time information indicating the same time is measured.
- the propagation delay amount measuring unit 221 supplies a delay time corresponding to the indirectly measured difference (T1-T2) in the propagation delay amount to the delay unit 222-1 or the delay unit 222-2.
- the broadcast packet P2 including time information indicating the time t1 is input (received) first. Then, when a broadcast packet P1 including time information indicating time t1 is input (received), the delay time corresponding to the difference (T1-T2) in the propagation delay amount of those broadcast packets is 222-2.
- the delay unit 222-1 and the delay unit 222-2 correspond to buffer memories, but the delay unit 222-2 performs signal processing according to the delay time from the propagation delay amount measurement unit 221.
- the broadcast packet (BB packet) input from the unit 232-2 is delayed.
- the delay unit 222-1 does not require a delay with respect to the broadcast packet (BB packet) input from the signal processing unit 232-1.
- the combining unit 203 appropriately reads out the broadcast packets (BB packets) held in the delay unit 222-1 and the delay unit 222-2 as buffer memories according to the BBP counter included in the extension header of the BB packet, Broadcast packets (BB packets) that have undergone physical layer processing are rearranged and output to the signal output unit 233.
- BB packets Broadcast packets
- the broadcast packet (BB packet) read from ⁇ 1 is not delayed (has 0 delay).
- the broadcast packet P1 that is transmitted for each of a plurality of transmission paths routes via the transmitting station 40-1 and the transmitting station 40-2) and includes the time information indicating the same time t1 and the broadcast packet are transmitted.
- There is no delay with respect to the packet P2 (the delay becomes 0), and as a result, a different propagation delay amount is compensated for each of a plurality of transmission paths.
- the broadcast packet P1 is input (received) earlier than the broadcast packet P2.
- the delay time corresponding to the difference (T1-T2) in the propagation delay amount of these broadcast packets is supplied from the propagation delay amount measuring unit 221 to the delay unit 222-1.
- the delay unit 222-1 delays the broadcast packet (BB packet) input from the signal processing unit 232-1 according to the delay time.
- the signal output unit 233 performs necessary processing on the broadcast packets (bordered broadcast packets) input from the combining unit 203, and outputs data obtained thereby to a subsequent circuit.
- the rearranged BB packets are processed by the signal output unit 233, and the IP packets obtained thereby are output to the subsequent circuit.
- Method 1 of the present technology broadcast packets transmitted for each of a plurality of transmission paths are processed, but propagation delay compensation processing is performed by the propagation delay compensation unit 211 to indicate the same time. A delay between broadcast packets having time information is eliminated, and a different propagation delay amount is compensated for each transmission path. Therefore, the receiving device 20 can correctly restore (recombine) the original stream from the plurality of divided streams by processing the broadcast packet in which such propagation delay amount is compensated.
- the propagation delay compensation unit 211 uses the time information included in the broadcast packet to indirectly determine the amount of propagation delay between broadcast packets including the time information indicating the same time.
- the propagation delay can be compensated only by delaying a specific broadcast packet according to the measurement result. That is, in the method 1 of the present technology, propagation delay compensation can be performed with a more simplified configuration without requiring a circuit for estimating the propagation delay time or complicated processing.
- FIG. 13 illustrates a configuration example when the method 2 of the present technology is employed.
- the propagation delay compensation unit 211 and the synthesis unit 203 are arranged before the signal input unit 231, the signal processing unit 232, and the signal output unit 233 compared to the configuration of A in FIG. 11 described above.
- the propagation delay compensation unit 211 includes a propagation delay amount measurement unit 221, a delay unit 222-1, and a delay unit 222-2. Note that the delay unit 222-1 and the delay unit 222-2 correspond to the buffer memory 202-1 and the buffer memory 202-2 in FIG. 4 described above.
- the propagation delay amount measurement unit 221 monitors the broadcast packet P1 (FIG. 9, FIG. 10, etc.) processed by the signal processing unit 232 and the broadcast packet P2 (FIG. 9, FIG. 10, etc.). Then, by measuring the difference ( ⁇ t 12 ) in the input time (reception time) of broadcast packets having time information indicating the same time, the difference (T1-T2) in the propagation delay amount of those broadcast packets is measured. To do.
- the propagation delay amount measuring unit 221 supplies a delay time corresponding to the measured propagation delay amount difference (T1-T2) to the delay unit 222-1 or the delay unit 222-2.
- the broadcast packet P2 including the time information indicating the time t1 is input (received) first, and then the time information indicating the time t1. Is input (received), a delay time corresponding to the difference (T1-T2) in the propagation delay amount of these broadcast packets is supplied to the delay unit 222-2.
- the propagation delay compensation unit 211 data (broadcast packet) obtained by processing the OFDM signal transmitted by the broadcast wave transmitted from the transmitting station 40-2 is input and held in the delay unit 222-2. .
- the delay unit 222-2 delays the data (broadcast packet) input thereto according to the delay time supplied from the propagation delay amount measurement unit 221.
- the delay unit 222-1 does not require a delay with respect to data (broadcast packet) obtained by processing the OFDM signal transmitted by the broadcast wave transmitted from the transmitting station 40-1.
- the synthesizing unit 203 appropriately reads data (broadcast packets) held in the delay unit 222-1 and the delay unit 222-2 as buffer memories, and rearranges the broadcast packets.
- the broadcast packets rearranged in this way are output to the signal input unit 231.
- the broadcast packet P1 that is transmitted for each of a plurality of transmission paths (routes via the transmitting station 40-1 and the transmitting station 40-2) and includes the time information indicating the same time t1 and the broadcast packet are transmitted.
- There is no delay with respect to the packet P2 (the delay becomes 0), and as a result, a different propagation delay amount is compensated for each of a plurality of transmission paths.
- the broadcast packet P2 is input (received) earlier than the broadcast packet P1 has been described, but the broadcast packet P1 is input (received) earlier than the broadcast packet P2. In this case, the same processing can be performed only by the delayed packet being the broadcast packet P1.
- the propagation delay compensation process is performed, so that the subsequent circuit of the synthesis unit 203 is integrated into one system. can do. Also in method 2 of the present technology, propagation delay compensation processing is performed by the propagation delay compensation unit 211 to eliminate delays between broadcast packets having time information indicating the same time, and to perform different propagation for each transmission path. The amount of delay is compensated. Therefore, the receiving device 20 can correctly restore (recombine) the original stream from the plurality of divided streams by processing the broadcast packet in which such propagation delay amount is compensated.
- the propagation delay compensation unit 211 uses the time information included in the broadcast packet to indirectly determine the amount of propagation delay between broadcast packets including the time information indicating the same time.
- the propagation delay can be compensated only by delaying a specific broadcast packet according to the measurement result. That is, in the method 2 of the present technology, the propagation delay compensation can be performed with a more simplified configuration without requiring a circuit for estimating the propagation delay time or complicated processing.
- the target physical layer frame (physical layer packet) is described as representing the time (absolute time) transmitted from the transmission facility (transmitting device 10). It can be said that the time information represents an absolute time at a predetermined position in the stream of the physical layer frame (physical layer packet).
- the time at a predetermined position in the stream is a time at a predetermined timing during which the bit at the predetermined position is being processed by the transmission apparatus 10.
- the time of the predetermined timing while the bit at the predetermined position is being processed by the transmission device 10 for example, when the bit at the predetermined position is output from a certain block of the transmission device 10.
- time information added to the broadcast packet for example, time information defined by PTP (Precision Time Protocol) can be used.
- PTP Precision Time Protocol
- the broadcast packet for which propagation delay is to be compensated has been described on the premise that it has time information indicating the same time (for example, time t1).
- the time information need not necessarily indicate the same time as long as the time information can identify the broadcast packet.
- the broadcasting station transmitting apparatus 10 has been described as having a configuration such as a multiplexer and a modulation unit.
- a multiplexer and a modulation are used in a general digital broadcasting system. Parts and the like are installed in different places. That is, for example, in FIG. 8, the transmission apparatus 10 is indicated by a dotted line with respect to the transmission station 40-1 and the transmission station 40-2. ) Represents that they are installed at the transmitting station 40-1 and the transmitting station 40-2.
- other functions for example, a multiplexer
- the transmission apparatus 10 are installed in a broadcasting station, for example.
- the broadcast route does not have to be a channel bonding target route.
- the receiving device 20 when receiving a broadcast wave (radio wave) from a plurality of broadcast paths that are not subject to channel bonding, the receiving device 20 performs propagation delay compensation processing, so that different propagation is performed for each of the plurality of broadcast paths. The amount of delay can be compensated.
- the delay compensated for each of the plurality of transmission paths is not limited to a propagation delay.
- This delay may be compensated.
- a delay such as a signal delay may be caused by a physical layer parameter (transmission parameter) for transmitting a broadcast wave, or by mounting of the transmission device 10 and the reception device 20, but the reception device 20 By performing delay compensation processing (propagation delay compensation processing), delay such as signal delay can be compensated.
- RF1 RF channel 1
- RF2 RF channel 2
- the number of transmission routes is not limited to two. Three or more transmission paths can be targeted.
- the transmission path is not limited to the broadcast path, and may include other paths such as a communication path, as will be described later.
- a broadcast path (route via the transmitting station 40-1 and the transmitting station 40-2) has been described.
- the transmission path is not limited to a broadcasting path, for example, Communication paths can be included. Therefore, hereinafter, delay compensation when a communication path is included in addition to a broadcast path as a plurality of transmission paths will be described with reference to FIGS. 14 to 16.
- FIG. 14 is a diagram for explaining an outline of propagation delay in broadcasting / communication cooperation.
- broadcast waves including RF channel 1 transmitted from the transmitting station 40-1 and broadcast waves (including RF channel 2) transmitted from the transmitting station 40-2.
- Broadcast wave is received by the antenna 50 installed in the house and processed by the receiving device 20 (for example, a television receiver having a communication function) installed in the house. Further, the receiving device 20 is connected to the server 60 via the Internet 40-3, and can exchange data via the Internet 40-3.
- a packet transmitted via the Internet 40-3 is also referred to as a communication packet P3.
- each broadcast wave transmitted from each transmitting station such as the transmitting station 40-1 and the transmitting station 40-2 has a different propagation delay amount.
- a delay also occurs when the receiving device 20 and the server 60 communicate via the Internet 40-3. Therefore, a packet (broadcast packet or communication packet) received by the receiving device 20 has a different propagation delay amount for each of a plurality of routes including a broadcast route and a communication route. Need to compensate.
- the time information is also added to a communication packet transmitted through the communication path.
- the propagation delay can be compensated.
- time information is contained in the preamble of the broadcast packet P1 transmitted by the broadcast wave from the transmitting station 40-1 and the preamble of the broadcast packet P2 transmitted by the broadcast wave from the transmitting station 40-2. include. Similarly, the time information is also included in the communication packet P3 transmitted from the server 60 via the Internet 40-3.
- the broadcast packet P1 transmitted by the broadcast wave from the transmitting station 40-1 the broadcast packet P2 transmitted by the broadcast wave from the transmitting station 40-2, and the server 60 from the Internet. Since the propagation delay amount is different from that of the communication packet P3 transmitted through 40-3, the timing at which these packets are input (received) in the receiving device 20 is different.
- a packet is transmitted for each of a plurality of transmission paths (a path via the transmitting station 40-1 and the transmitting station 40-2, a path via the Internet 40-3), and has the same time t1. Since the packet having the time information shown is input (received) in the order of the broadcast packet P2, the communication packet P3, and the broadcast packet P1, the most delayed broadcast packet P1 is used as a reference packet, and other packets (broadcast packet P2 and The communication packet P3) is delayed.
- the difference ( ⁇ t 12 ) between the start time of the broadcast packet P1 and the start time of the broadcast packet P2 is set to 0, the difference (T1-T2) between the propagation delay time T1 and the propagation delay time T2 Will also be 0.
- the difference ( ⁇ t 13 ) between the start time of the broadcast packet P1 and the start time of the communication packet P3 is set to 0, the difference (T1-T3) between the propagation delay time T1 and the propagation delay time T3 Will also be 0.
- the broadcast packet P1 is used as a reference packet, and the time difference between the other packets (broadcast packet P2 and communication packet P3) is set to 0, and as a result, a different propagation delay amount is compensated for each transmission path. It becomes possible to do.
- the packet (for example, the broadcast packet P2 and the communication packet P3 in FIG. 15) input (received) first, and the packet (for example, the broadcast packet P1 in FIG. 15) input (received) after that is input. It is delayed until it is input (received) so that there is no delay between those packets (for example, the delay between the broadcast packet P1, the broadcast packet P2, and the communication packet P3 in FIG. 15) ( Set the delay to 0).
- the receiving apparatus 20 compensates for different propagation delay amounts for each of a plurality of transmission paths including a broadcast path and a communication path.
- FIG. 16 is a diagram illustrating a configuration example in the case where communication paths are included in a plurality of transmission paths.
- the broadcast wave transmitted from the transmitting station 40-1 (broadcast wave including the RF channel 1) and the broadcast wave transmitted from the transmitting station 40-2 ( In addition to a series of broadcast waves including the RF channel 2, a signal from a series of communication lines (Internet 40-3) is input.
- the signal input unit 231-1 processes the OFDM signal transmitted by the broadcast wave transmitted from the transmission station 40-1 input thereto and outputs the processed OFDM signal to the signal processing unit 232-1.
- the signal processing unit 232-1 performs physical layer processing on the data from the signal input unit 231-1 and outputs a broadcast packet (BB packet) obtained thereby to the signal output unit 233-1.
- the signal output unit 233-1 performs necessary processing on the broadcast packet (BB packet) input from the signal processing unit 232-1 and converts the IP packet obtained thereby into the delay unit 222 of the propagation delay compensation unit 211. Output to -1.
- the signal input unit 231-2 processes the OFDM signal transmitted there by broadcast waves transmitted from the transmitting station 40-2 and outputs the processed signal to the signal processing unit 232-2.
- the signal processing unit 232-2 performs physical layer processing on the data from the signal input unit 231-2, and outputs a broadcast packet (BB packet) obtained thereby to the signal output unit 233-2.
- the signal output unit 233-2 performs necessary processing on the broadcast packet (BB packet) input from the signal processing unit 232-2, and the resulting IP packet is transmitted to the delay unit 222 of the propagation delay compensation unit 211. Output to -2.
- a communication packet (IP packet) transmitted from the server 60 via the Internet 40-3 is received and input to the delay unit 222-3 of the propagation delay compensation unit 211.
- the propagation delay amount measurement unit 221 includes a broadcast packet P1 (FIG. 15 and the like) processed by the signal processing unit 232-1 and a broadcast packet processed by the signal processing unit 232-2.
- P2 (FIG. 15 etc.) and the communication packet P3 (FIG. 15 etc.) received via the Internet 40-3 are monitored.
- the propagation delay measuring unit 221 measures the difference ( ⁇ t 12 , ⁇ t 13 ) between the input time (reception time) of the broadcast packet and the communication packet having time information indicating the same time, so that those packets are Measure the difference in propagation delay (T1-T2, T1-T3).
- the propagation delay amount measuring unit 221 determines the delay time corresponding to the difference (T1-T2, T1-T3) of the indirectly measured propagation delay amount as the delay unit 222-1, the delay unit 222-2, or the delay time. To the unit 222-3.
- the broadcast packet P1 is processed by the signal processing unit 232-1
- the broadcast packet P2 is processed by the signal processing unit 232-2
- the communication packet P3 is input (received)
- the same time t1 is shown.
- a packet having time information is received in the order of a broadcast packet P2, a communication packet P3, and a broadcast packet P1
- the delay time according to the difference in propagation delay amount of these packets (T1-T2, T1-T3) This is supplied to the delay unit 222-2 and the delay unit 222-3.
- the delay unit 222-1 to the delay unit 222-3 correspond to a buffer memory, but the delay unit 222-2 has a delay time (T1-T2) from the propagation delay amount measurement unit 221.
- the delay unit 222-1 does not require a delay with respect to the broadcast packet (IP packet) input from the signal output unit 233-1.
- the synthesizing unit 203 appropriately reads the broadcast packet (IP packet) and the communication packet (IP packet) held in the delay unit 222-1 to the delay unit 222-3 as buffer memories, and Rearrange communication packets.
- the broadcast packets (IP packets) and communication packets (IP packets) rearranged in this way are output to the subsequent circuit.
- the broadcast packet (IP packet) read from the delay unit 222-1 is not delayed (has 0 delay).
- a packet transmitted for each of a plurality of transmission paths (routes via the transmitting station 40-1, the transmitting station 40-2, and the Internet 40-3), and includes a broadcast packet including time information indicating the same time
- the delay between P1, the broadcast packet P2, and the communication packet P3 is eliminated (the delay becomes 0).
- a different propagation delay amount is compensated for each of a plurality of transmission paths.
- the most delayed broadcast packet P1 is used as a reference packet, and other packets (broadcast packets).
- P2 and communication packet P3) are delayed, but when broadcast packet P2 or communication packet P3 is most delayed, broadcast packet P2 or communication packet P3 is used as a reference packet, and other packets are transmitted. What is necessary is just to be delayed.
- propagation delay compensation processing is performed by the propagation delay compensation unit 211, and time information (time) indicating the same time is obtained.
- time information time indicating the same time is obtained.
- a delay between a broadcast packet having a stamp) and a communication packet is eliminated (a variation in delay is suppressed), and a different propagation delay amount is compensated for each transmission path. Therefore, the receiving device 20 can correctly restore (recombine) the original stream from the plurality of divided streams by processing the broadcast packet and the communication packet in which such propagation delay amount is compensated.
- time information added to the communication packet for example, time information defined by NTP (Network Time Protocol) can be used.
- NTP Network Time Protocol
- delays other than the propagation delay are assumed, but here, the propagation delay has been described as an example. However, a delay other than the propagation delay may be considered.
- FIG. 17 is a diagram for explaining delay compensation when the time is shifted for each transmission facility.
- a broadcast packet that is transmitted for each of a plurality of transmission paths (routes that pass through the transmission station 40-1 and the transmission station 40-2) and that has time information indicating the same time t1 is transmitted. Since the broadcast packet P2 and the broadcast packet P1 are received in this order, the most delayed broadcast packet P1 is used as a reference packet so that other packets (broadcast packet P2) are delayed.
- the propagation delay is increased.
- the sum of the difference (T1-T2) between the time T1 and the propagation delay time T2 and the time lag for each transmission facility (the time difference between the transmitting station 40-1 and the transmitting station 40-2) is 0. It becomes. As a result, it is possible to compensate for a propagation delay amount that differs for each of a plurality of transmission paths and a deviation in the broadcast packet transmission time for each transmission facility.
- a broadcast packet (for example, a broadcast packet P2 including time information indicating time t1 in FIG. 17) that is input (received) first (for example, FIG. 17) is input (received) thereafter.
- the broadcast packet P1 including the time information indicating the time t1 is input (received)
- the delay between the broadcast packets (for example, the time information indicating the time t1 in FIG. (The delay between the broadcast packet P1 and the broadcast packet P2 included) is eliminated (the delay is set to 0).
- the receiving device 20 compensates not only the propagation delay amount that differs for each of a plurality of transmission paths including the broadcast path, but also the deviation of the broadcast packet transmission time for each transmission facility.
- the propagation delay compensation unit 211 performs the delay compensation process (propagation delay). Compensation process) is performed to eliminate the delay between broadcast packets having time information indicating the same time, and to compensate for the propagation delay amount different for each transmission path and the deviation of the broadcast packet transmission time for each transmission facility. ing. Therefore, the receiving apparatus 20 can correctly restore (recombine) the original stream from the plurality of divided streams by processing the broadcast packet in which such a delay in propagation delay and transmission time is compensated. .
- step S21-1 the signal processing unit 232-1 performs processing (physical layer processing) on the OFDM signal transmitted by the broadcast wave (broadcast wave including the RF channel 1) transmitted from the transmission station 40-1.
- the RF channel 1 (RF1) data is processed.
- step S22-1 the signal processing unit 232-1 acquires time information (FIG. 9 and the like) included in the broadcast packet P1 (its preamble) obtained as a result of the processing in step S21-1. Note that the broadcast packet P1 processed by the signal processing unit 232-1 is output to the delay unit 222-1 of the propagation delay compensation unit 211.
- step S21-2 the signal processing unit 232-2 performs processing (physical layer processing) on the OFDM signal transmitted by the broadcast wave (broadcast wave including the RF channel 2) transmitted from the transmitting station 40-2.
- the RF channel 2 (RF2) data is processed.
- step S22-2 the signal processing unit 232-2 acquires time information (FIG. 9 and the like) included in the broadcast packet P2 (preamble thereof) obtained as a result of the processing in step S21-2. Note that the broadcast packet P2 processed by the signal processing unit 232-2 is output to the delay unit 222-2 of the propagation delay compensation unit 211.
- steps S21-1 to S22-1 RF channel 1 data processing
- steps S21-2 to S22-2 RF channel 2 data processing
- this difference in propagation delay is measured by obtaining a difference in input time (reception time) of broadcast packets having time information indicating the same time.
- the difference of the input time (reception time) of a broadcast packet can be measured by comparing the input time (reception time) for every broadcast packet using the internal time of the receiving device 20, for example.
- step S24 the delay unit 222-1 or the delay unit 222-2 determines the signal processing unit 232-1 or the delay unit 222-2 according to the delay time supplied from the propagation delay amount measurement unit 221 (delay time according to the difference in propagation delay amount).
- the broadcast packet (broadcast packet P1 or broadcast packet P2) input from the signal processing unit 232-2 is delayed.
- the broadcast packet transmitted for each of the plurality of transmission paths and having the time information indicating the same time (for example, time t1) is the latest delayed broadcast packet (for example, broadcast packet P1).
- other packets for example, broadcast packet P2) are delayed.
- step S25 the synthesizing unit 203 appropriately reads out the broadcast packet (broadcast packet P1 or broadcast packet P2) held in the delay unit 222-1 or the delay unit 222-2 as a buffer memory, thereby performing the process of step S24.
- the broadcast packets whose propagation delay is compensated for are rearranged.
- the processing in steps S24 to S25 is performed by the combining unit 203 as follows, for example. That is, the synthesizing unit 203 determines the broadcast packet (BB packet) held in the delay unit 222-1 or the delay unit 222-2 as a buffer memory according to the BBP counter included in the extension header of the broadcast packet (BB packet).
- the broadcast packets (BB packets) that have been appropriately read and subjected to physical layer processing can be rearranged (S25). At this time, the broadcast packet (BB packet) has no delay between the broadcast packets (the delay becomes 0) in the process of step S24, and different propagation delays for each of the plurality of transmission paths are compensated.
- broadcast packets (BB packets) rearranged in the process of step S25 are processed by the signal output unit 233 and output as, for example, IP packets.
- the propagation delay compensation process of FIG. 18 is ended.
- the difference in propagation delay amount for each transmission path is indirectly measured using the time information added to the broadcast packet transmitted for each of the plurality of transmission paths. By delaying a specific broadcast packet according to the difference, a propagation delay amount different for each transmission path is compensated.
- the delay compensation in the case where a broadcast path is included as a plurality of transmission paths has been described.
- a communication path is included as a plurality of transmission paths, Even when there is a deviation in the packet transmission time for each transmission facility, the delay can be compensated.
- the propagation delay changes with time depending on the network conditions such as the Internet 40-3. Therefore, the propagation delay can be compensated by performing the propagation delay compensation process of FIG. 18 in a timely manner. become.
- ATSC particularly ATSC 3.0
- ATSC 3.0 which is a method adopted in the United States and the like
- ISDB Integrated (Services Digital Broadcasting)
- DVB Digital Video Broadcasting
- ATSC 3.0 in which the IP transmission method is adopted has been described as an example.
- the present invention is not limited to the IP transmission method, and is applied to other methods such as an MPEG2-TS (TransportTSStream) method, for example. You may do it.
- digital broadcasting is applicable to satellite broadcasting using broadcasting satellites (BS: Broadcasting Satellite) and communication satellites (CS: Communications Satellite), cable broadcasting such as cable TV (CATV), etc. can do.
- BS Broadcasting Satellite
- CS Communications Satellite
- CATV cable TV
- BB packet Baseband packet
- BB stream Baseband Stream
- BBF Baseband Frame
- time information added to the packet has been described mainly with respect to time information defined by PTP (Precision Time Protocol) or NTP (Network Time Protocol). (Coordinated Universal Time) and time information specified in 3GPP (Third Generation Partnership Project), time information included in GPS (Global Positioning System) information, and other time in a uniquely determined format It is possible to use information at an arbitrary time such as the above information.
- PTP Precision Time Protocol
- NTP Network Time Protocol
- 3GPP Third Generation Partnership Project
- GPS Global Positioning System
- the present technology provides a predetermined standard (assuming that a transmission line other than a broadcast network, that is, a communication line (communication network) such as the Internet or a telephone network) is used as a transmission line.
- a transmission line other than a broadcast network that is, a communication line (communication network) such as the Internet or a telephone network
- the present invention can also be applied to standards other than digital broadcasting standards.
- 1 is a mobile receiver such as a mobile phone, a smartphone, or a tablet terminal in addition to a fixed receiver such as a television receiver, a set top box (STB), or a recorder. It may be a vehicle-mounted device mounted on a vehicle.
- FIG. 19 is a diagram illustrating a configuration example of hardware of a computer that executes the above-described series of processing by a program.
- a CPU Central Processing Unit
- ROM Read Only Memory
- RAM Random Access Memory
- An input / output interface 1005 is further connected to the bus 1004.
- An input unit 1006, an output unit 1007, a recording unit 1008, a communication unit 1009, and a drive 1010 are connected to the input / output interface 1005.
- the input unit 1006 includes a keyboard, a mouse, a microphone, and the like.
- the output unit 1007 includes a display, a speaker, and the like.
- the recording unit 1008 includes a hard disk, a nonvolatile memory, and the like.
- the communication unit 1009 includes a network interface or the like.
- the drive 1010 drives a removable medium 1011 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.
- the CPU 1001 loads the program recorded in the ROM 1002 or the recording unit 1008 to the RAM 1003 via the input / output interface 1005 and the bus 1004 and executes the program. A series of processing is performed.
- the program executed by the computer 1000 can be provided by being recorded on the removable medium 1011 as a package medium, for example.
- the program can be provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting.
- the program can be installed in the recording unit 1008 via the input / output interface 1005 by attaching the removable medium 1011 to the drive 1010.
- the program can be received by the communication unit 1009 via a wired or wireless transmission medium and installed in the recording unit 1008.
- the program can be installed in the ROM 1002 or the recording unit 1008 in advance.
- the processing performed by the computer according to the program does not necessarily have to be performed in chronological order in the order described as the flowchart. That is, the processing performed by the computer according to the program includes processing executed in parallel or individually (for example, parallel processing or object processing).
- the program may be processed by a single computer (processor) or may be distributedly processed by a plurality of computers.
- the present technology can take the following configurations.
- a receiving apparatus comprising: a delay compensator that compensates for a delay between packets transmitted for each of the plurality of transmission paths by delaying other packets transmitted through a transmission path other than the path.
- the delay compensation unit includes: Among the packets transmitted for each of the plurality of transmission paths, a measurement unit that measures a delay amount between packets including time information indicating the same time, and A delay unit that delays a packet that is most delayed among the packets including time information indicating the same time as the reference packet, and other packets as the other packets, according to the measurement result of the delay amount.
- the receiving device according to (1).
- the delay compensated in the broadcast path is a propagation delay according to the distance between the transmission point where the broadcast wave is transmitted and the reception point where the broadcast wave is received (1) to (4) The receiving device described in 1.
- the delay compensated in the broadcast path includes a time lag for each transmission facility that transmits a broadcast wave together with the propagation delay.
- the receiving device according to (1), wherein the delay compensated in the broadcast path is a physical layer parameter for transmitting a broadcast wave or a delay according to the mounting of the receiving device.
- the plurality of transmission paths include a communication path along with the broadcast path.
- the time information is Included in the preamble of packets processed at the physical layer, The receiving device according to any one of (1) to (8), which indicates a time at which the packet is processed.
- the receiving device is Based on time information included in a packet transmitted for each of a plurality of transmission paths including a broadcast path, the reference transmission is performed with respect to a reference packet transmitted on a reference transmission path among the plurality of transmission paths.
- a data processing method including a step of compensating for a delay between packets transmitted for each of the plurality of transmission paths by delaying other packets transmitted on a transmission path other than the path.
- 1 transmission system 10 transmitting device, 20 receiving device, 30 transmission path, 40-1, 40-2 transmitting station, 40-3 internet, 50 antenna, 60 server, 102 dividing unit, 111-1, 111-2 physical layer Processing unit, 201-1 and 201-2 physical layer processing unit, 202-1 and 202-2 buffer memory, 203 synthesis unit, 211 propagation delay compensation unit, 221 propagation delay amount measurement unit, 222-1 and 222-2, 222-3 delay unit, 231, 231-1, 231-2 signal input unit, 232, 232-1, 232-2 signal processing unit, 233, 233-1, 233-2 signal output unit, 1000 computer, 1001 CPU
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Circuits Of Receivers In General (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
Description
2.チャネルボンディングの概要
3.本技術の遅延補償
(1)チャネルボンディングの遅延補償
(2)放送・通信連携の遅延補償
(3)送出設備ごとに時刻がずれている場合の遅延補償
4.受信側の遅延補償処理の流れ
5.変形例
6.コンピュータの構成
図1は、本技術を適用した伝送システムの一実施の形態の構成を示す図である。なお、システムとは、複数の装置が論理的に集合したものをいう。
図2は、チャネルボンディングの概念を示す図である。
図3は、送信装置10におけるチャネルボンディングの処理を示す図である。
図4は、受信装置20におけるチャネルボンディングの処理を示す図である。
ここで、図5乃至図7を参照して、BBPカウンタの構成について説明する。
図8は、チャネルボンディングの伝播遅延の概要を説明する図である。
図10には、受信装置20において、伝送経路ごとに異なる伝播遅延量を補償するための伝播遅延補償部211の構成例が示されている。伝播遅延補償部211は、複数の伝送経路ごとに伝送される放送パケットであって、同一の時刻を示す時刻情報を含む放送パケットの間の遅延をなくすために、伝播遅延量計測部221、遅延部222-1、及び、遅延部222-2を有している。
次に、図11乃至図13を参照して、チャネルボンディングの機能を有する受信装置20において、図10の伝播遅延補償部211による伝播遅延補償処理を行う場所について説明する。ここでは、比較のため、まず、図11を参照して、従来の方式の構成について説明してから、その後に、図12及び図13を参照して、本技術の方式の構成について説明する。
図11のAには、従来の方式1の構成を図示している。
図12には、本技術の方式1を採用した場合の構成例を図示している。
図13には、本技術の方式2を採用した場合の構成例を図示している。
図14は、放送・通信連携の伝播遅延の概要を説明する図である。
図16は、複数の伝送経路に通信の経路を含む場合の構成例を示す図である。
放送の経路を含む複数の伝送経路ごとに伝送されるパケットに含まれる時刻情報に基づいて、前記複数の伝送経路のうちの基準の伝送経路で伝送される基準パケットに対して、前記基準の伝送経路以外の他の伝送経路で伝送される他のパケットを遅延させることで、前記複数の伝送経路ごとに伝送されるパケットの間の遅延を補償する遅延補償部を備える
受信装置。
(2)
前記遅延補償部は、
前記複数の伝送経路ごとに伝送されるパケットのうち、同一の時刻を示す時刻情報を含むパケットの間の遅延量を計測する計測部と、
前記遅延量の計測結果に従い、同一の時刻を示す時刻情報を含むパケットのうち、最も遅れているパケットを、前記基準パケットとし、それ以外のパケットを、前記他のパケットとして遅延させる遅延部と
を有する
(1)に記載の受信装置。
(3)
前記複数の伝送経路は、複数の周波数帯域を結合して使用するチャネルボンディングの対象となる複数の周波数帯域ごとの伝送経路である
(1)又は(2)に記載の受信装置。
(4)
前記複数の周波数帯域ごとに、放送波が送出される送出地点が異なっている
(3)に記載の受信装置。
(5)
前記放送の経路で補償される遅延は、放送波が送出される送出地点と、その放送波が受信される受信地点との距離に応じた伝播遅延である
(1)乃至(4)のいずれかに記載の受信装置。
(6)
前記放送の経路で補償される遅延は、前記伝播遅延とともに、放送波を送出する送出設備ごとの時刻のずれを含む
(5)に記載の受信装置。
(7)
前記放送の経路で補償される遅延は、放送波を伝送するための物理層のパラメータ、又は、前記受信装置の実装に応じた遅延である
(1)に記載の受信装置。
(8)
前記複数の伝送経路は、前記放送の経路とともに、通信の経路を含む
(1)に記載の受信装置。
(9)
前記時刻情報は、
物理層で処理されるパケットのプリアンブルに含まれ、
前記パケットが処理された時刻を示している
(1)乃至(8)のいずれかに記載の受信装置。
(10)
受信装置のデータ処理方法において、
前記受信装置が、
放送の経路を含む複数の伝送経路ごとに伝送されるパケットに含まれる時刻情報に基づいて、前記複数の伝送経路のうちの基準の伝送経路で伝送される基準パケットに対して、前記基準の伝送経路以外の他の伝送経路で伝送される他のパケットを遅延させることで、前記複数の伝送経路ごとに伝送されるパケットの間の遅延を補償する
ステップを含むデータ処理方法。
Claims (10)
- 放送の経路を含む複数の伝送経路ごとに伝送されるパケットに含まれる時刻情報に基づいて、前記複数の伝送経路のうちの基準の伝送経路で伝送される基準パケットに対して、前記基準の伝送経路以外の他の伝送経路で伝送される他のパケットを遅延させることで、前記複数の伝送経路ごとに伝送されるパケットの間の遅延を補償する遅延補償部を備える
受信装置。 - 前記遅延補償部は、
前記複数の伝送経路ごとに伝送されるパケットのうち、同一の時刻を示す時刻情報を含むパケットの間の遅延量を計測する計測部と、
前記遅延量の計測結果に従い、同一の時刻を示す時刻情報を含むパケットのうち、最も遅れているパケットを、前記基準パケットとし、それ以外のパケットを、前記他のパケットとして遅延させる遅延部と
を有する
請求項1に記載の受信装置。 - 前記複数の伝送経路は、複数の周波数帯域を結合して使用するチャネルボンディングの対象となる複数の周波数帯域ごとの伝送経路である
請求項2に記載の受信装置。 - 前記複数の周波数帯域ごとに、放送波が送出される送出地点が異なっている
請求項3に記載の受信装置。 - 前記放送の経路で補償される遅延は、放送波が送出される送出地点と、その放送波が受信される受信地点との距離に応じた伝播遅延である
請求項1に記載の受信装置。 - 前記放送の経路で補償される遅延は、前記伝播遅延とともに、放送波を送出する送出設備ごとの時刻のずれを含む
請求項5に記載の受信装置。 - 前記放送の経路で補償される遅延は、放送波を伝送するための物理層のパラメータ、又は、前記受信装置の実装に応じた遅延である
請求項1に記載の受信装置。 - 前記複数の伝送経路は、前記放送の経路とともに、通信の経路を含む
請求項1に記載の受信装置。 - 前記時刻情報は、
物理層で処理されるパケットのプリアンブルに含まれ、
前記パケットが処理された時刻を示している
請求項2に記載の受信装置。 - 受信装置のデータ処理方法において、
前記受信装置が、
放送の経路を含む複数の伝送経路ごとに伝送されるパケットに含まれる時刻情報に基づいて、前記複数の伝送経路のうちの基準の伝送経路で伝送される基準パケットに対して、前記基準の伝送経路以外の他の伝送経路で伝送される他のパケットを遅延させることで、前記複数の伝送経路ごとに伝送されるパケットの間の遅延を補償する
ステップを含むデータ処理方法。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018008429A1 (ja) * | 2016-07-08 | 2018-01-11 | ソニーセミコンダクタソリューションズ株式会社 | 送信装置、受信装置、及び、データ処理方法 |
JP2019176263A (ja) * | 2018-03-27 | 2019-10-10 | 富士通株式会社 | 送受信システム、データ受信装置、およびデータ受信方法 |
JP2020123763A (ja) * | 2019-01-29 | 2020-08-13 | 日本放送協会 | 送信装置及び受信装置 |
JP7526024B2 (ja) | 2020-04-22 | 2024-07-31 | 日本放送協会 | 送信装置及び受信装置 |
JP7526025B2 (ja) | 2020-04-22 | 2024-07-31 | 日本放送協会 | 送信装置及び受信装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI722590B (zh) * | 2019-10-02 | 2021-03-21 | 瑞昱半導體股份有限公司 | 目標時脈調整方法及其無線裝置 |
CN115398855A (zh) * | 2020-04-17 | 2022-11-25 | 捷开通讯(深圳)有限公司 | 传播延迟补偿 |
EP4272386A1 (en) * | 2021-01-11 | 2023-11-08 | Aura Intelligent Systems, Inc. | Transmitter and receiver for high-resolution sub-band coded time-frequency waveform radar system with bandpass sampling |
US20220394645A1 (en) * | 2021-06-02 | 2022-12-08 | Corning Research & Development Corporation | Synchronization of frames in multiple streams in a wireless communications system (wcs) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003234726A (ja) * | 2002-02-08 | 2003-08-22 | Kddi Corp | フレーム同期システムの送信装置、受信装置およびフレーム同期方法 |
JP2005252919A (ja) * | 2004-03-08 | 2005-09-15 | Sharp Corp | 通信システム及び送信方法及び受信装置 |
WO2008075608A1 (ja) * | 2006-12-20 | 2008-06-26 | Nec Corporation | 伝送システム、送信装置、受信装置、信号伝送方法及びプログラム |
JP2011101106A (ja) * | 2009-11-04 | 2011-05-19 | Nippon Telegr & Teleph Corp <Ntt> | パラレル光伝送方法、パラレル光伝送システム、及びパラレル光送信装置 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5907582A (en) * | 1997-08-11 | 1999-05-25 | Orbital Sciences Corporation | System for turbo-coded satellite digital audio broadcasting |
SE0002587D0 (sv) * | 2000-07-07 | 2000-07-07 | Ericsson Telefon Ab L M | Rake receiver and method related to a rake receiver |
EP2112775B1 (en) * | 2008-04-25 | 2018-06-06 | Telefonaktiebolaget LM Ericsson (publ) | Method and apparatus for compensation for propagation delay in a wireless communication system |
KR101613857B1 (ko) * | 2009-06-10 | 2016-05-02 | 삼성전자주식회사 | 무선 방송 통신 시스템 및 그의 방송 서비스 방법 |
EP2278738B1 (en) * | 2009-06-30 | 2011-09-21 | Alcatel Lucent | Method and apparatus for line latency measurement in transport networks |
CN102577194B (zh) * | 2009-08-25 | 2014-11-12 | Sem技术公司 | 使分布式网络内时钟同步的系统和方法 |
RU2504086C1 (ru) * | 2009-11-19 | 2014-01-10 | Телефонактиеболагет Л М Эрикссон (Пабл) | Конфигурация сети синхронизации |
US8576713B2 (en) * | 2010-04-23 | 2013-11-05 | Ixia | Traffic generator with priority flow control |
WO2011142113A1 (ja) * | 2010-05-10 | 2011-11-17 | パナソニック株式会社 | デジタル放送受信装置及びデジタル放送受信方法 |
US9769635B2 (en) * | 2010-11-23 | 2017-09-19 | Lg Electronics Inc. | Broadcast signal transmitting apparatus, broadcast signal receiving apparatus, and broadcast signal transceiving method in broadcasting signal transmitting and receiving apparatuses |
KR20140045440A (ko) * | 2011-06-30 | 2014-04-16 | 제넨테크, 인크. | 항-c-met 항체 제제 |
CN102291233B (zh) * | 2011-09-08 | 2014-01-01 | 武汉烽火网络有限责任公司 | 用于获得时间同步中精确线路传输延迟的方法 |
JP5565431B2 (ja) * | 2012-04-18 | 2014-08-06 | 横河電機株式会社 | 制御装置及び制御システム |
CN105556953B (zh) * | 2013-07-29 | 2019-04-19 | Lg电子株式会社 | 发送广播信号的装置、接收广播信号的装置、发送广播信号的方法和接收广播信号的方法 |
EP3036899B1 (en) * | 2013-08-19 | 2022-03-02 | LG Electronics Inc. | Method and apparatus for receiving broadcast signals |
WO2015064942A1 (en) * | 2013-10-28 | 2015-05-07 | Lg Electronics Inc. | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals |
JP6309639B2 (ja) * | 2014-01-13 | 2018-04-11 | エルジー エレクトロニクス インコーポレイティド | 1つ以上のネットワークを介して放送コンテンツを送信又は受信するための方法及び装置 |
CN106031181B (zh) * | 2014-04-18 | 2019-06-14 | Lg电子株式会社 | 广播信号发送设备、广播信号接收设备、广播信号发送方法和广播信号接收方法 |
KR101764637B1 (ko) * | 2014-12-05 | 2017-08-14 | 엘지전자 주식회사 | 방송 신호 송신 방법, 방송 신호 송신 장치, 방송 신호 수신 방법 및 방송 신호 수신 장치 |
KR101911276B1 (ko) * | 2014-12-31 | 2018-10-24 | 엘지전자 주식회사 | 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법, 및 방송 신호 수신 방법 |
WO2017029794A1 (en) * | 2015-08-14 | 2017-02-23 | Sharp Kabushiki Kaisha | Systems and methods for communicating time representations |
US20170064655A1 (en) * | 2015-08-25 | 2017-03-02 | Qualcomm Incorporated | Multi-antenna receiver processing |
-
2016
- 2016-11-29 EP EP16872850.9A patent/EP3389216A4/en active Pending
- 2016-11-29 CA CA3005164A patent/CA3005164A1/en active Pending
- 2016-11-29 WO PCT/JP2016/085285 patent/WO2017098950A1/ja active Application Filing
- 2016-11-29 KR KR1020187014325A patent/KR20180090993A/ko not_active Application Discontinuation
- 2016-11-29 US US15/770,772 patent/US20180324102A1/en active Pending
- 2016-11-29 CN CN201680070319.9A patent/CN108292989B/zh active Active
- 2016-11-29 JP JP2017555023A patent/JPWO2017098950A1/ja active Pending
- 2016-11-29 MX MX2018006721A patent/MX2018006721A/es unknown
- 2016-12-01 TW TW105139691A patent/TWI735486B/zh active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003234726A (ja) * | 2002-02-08 | 2003-08-22 | Kddi Corp | フレーム同期システムの送信装置、受信装置およびフレーム同期方法 |
JP2005252919A (ja) * | 2004-03-08 | 2005-09-15 | Sharp Corp | 通信システム及び送信方法及び受信装置 |
WO2008075608A1 (ja) * | 2006-12-20 | 2008-06-26 | Nec Corporation | 伝送システム、送信装置、受信装置、信号伝送方法及びプログラム |
JP2011101106A (ja) * | 2009-11-04 | 2011-05-19 | Nippon Telegr & Teleph Corp <Ntt> | パラレル光伝送方法、パラレル光伝送システム、及びパラレル光送信装置 |
Non-Patent Citations (2)
Title |
---|
"MMT-Based Media Transport Scheme in Digital Broadcasting Systems, ARIB STD-B60 ver.1.0", ASSOCIATION OF RADIO INDUSTRIES AND BUSINESSES, 31 July 2014 (2014-07-31), pages 29 - 38, XP008185074 * |
See also references of EP3389216A4 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018008429A1 (ja) * | 2016-07-08 | 2018-01-11 | ソニーセミコンダクタソリューションズ株式会社 | 送信装置、受信装置、及び、データ処理方法 |
JPWO2018008429A1 (ja) * | 2016-07-08 | 2019-04-18 | ソニーセミコンダクタソリューションズ株式会社 | 送信装置、受信装置、及び、データ処理方法 |
US10615951B2 (en) | 2016-07-08 | 2020-04-07 | Sony Semiconductor Solutions Corporation | Transmission apparatus, reception apparatus, and data processing method |
JP7166919B2 (ja) | 2016-07-08 | 2022-11-08 | ソニーセミコンダクタソリューションズ株式会社 | 送信装置、及び、データ処理方法 |
JP2019176263A (ja) * | 2018-03-27 | 2019-10-10 | 富士通株式会社 | 送受信システム、データ受信装置、およびデータ受信方法 |
JP7069936B2 (ja) | 2018-03-27 | 2022-05-18 | 富士通株式会社 | 送受信システム、データ受信装置、およびデータ受信方法 |
JP2020123763A (ja) * | 2019-01-29 | 2020-08-13 | 日本放送協会 | 送信装置及び受信装置 |
JP7257153B2 (ja) | 2019-01-29 | 2023-04-13 | 日本放送協会 | 送信装置及び受信装置 |
JP7526024B2 (ja) | 2020-04-22 | 2024-07-31 | 日本放送協会 | 送信装置及び受信装置 |
JP7526025B2 (ja) | 2020-04-22 | 2024-07-31 | 日本放送協会 | 送信装置及び受信装置 |
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JPWO2017098950A1 (ja) | 2018-09-27 |
MX2018006721A (es) | 2018-08-01 |
EP3389216A4 (en) | 2019-01-09 |
US20180324102A1 (en) | 2018-11-08 |
TW201731279A (zh) | 2017-09-01 |
EP3389216A1 (en) | 2018-10-17 |
TWI735486B (zh) | 2021-08-11 |
CN108292989A (zh) | 2018-07-17 |
KR20180090993A (ko) | 2018-08-14 |
CN108292989B (zh) | 2022-08-30 |
CA3005164A1 (en) | 2017-06-15 |
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