WO2018021036A1 - 受信装置、受信方法、およびプログラム - Google Patents
受信装置、受信方法、およびプログラム Download PDFInfo
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- WO2018021036A1 WO2018021036A1 PCT/JP2017/025463 JP2017025463W WO2018021036A1 WO 2018021036 A1 WO2018021036 A1 WO 2018021036A1 JP 2017025463 W JP2017025463 W JP 2017025463W WO 2018021036 A1 WO2018021036 A1 WO 2018021036A1
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000012937 correction Methods 0.000 claims abstract description 87
- 238000000605 extraction Methods 0.000 claims abstract description 66
- 238000012545 processing Methods 0.000 claims abstract description 55
- 239000000284 extract Substances 0.000 claims abstract description 26
- 238000005516 engineering process Methods 0.000 abstract description 13
- 230000005540 biological transmission Effects 0.000 description 48
- 238000006243 chemical reaction Methods 0.000 description 23
- 239000012556 adjustment buffer Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/13—Linear codes
- H03M13/19—Single error correction without using particular properties of the cyclic codes, e.g. Hamming codes, extended or generalised Hamming codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
-
- 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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
- H04N21/6336—Control signals issued by server directed to the network components or client directed to client directed to decoder
Definitions
- the present technology relates to a receiving device, a receiving method, and a program, and particularly to a receiving device, a receiving method, and a program that can reduce power consumption.
- ISDB-S Integrated Services Digital Broadcasting for Satellite
- BS digital television broadcasting BS digital audio broadcasting
- 110-degree CS digital broadcasting 110-degree CS digital broadcasting
- TMCC Transmission / Multiplexing / Configuration / Control
- TMCC information is used to correctly demodulate and reproduce received data in a receiver such as a television receiver or a portable terminal having a television function.
- Patent Document 1 discloses a receiving apparatus that extracts parameters related to data transmission and multiplexing from the entire TMCC information and demodulates them according to the extracted parameters.
- ISDB-S3 which is the successor to the current ISDB-S
- ISDB-S3 it is possible to efficiently transmit higher quality images, sounds and data in the same band as the current standard.
- an LDPC (Low-Density-Parity-Check) code is used as an error correction code. Error correction using an LDPC code exhibits high correction capability, but power consumption is high in implementation.
- the present technology has been made in view of such a situation, and enables power consumption to be reduced.
- the receiving apparatus of the present technology includes an extraction circuit that extracts a part of the control information added to the data, and data specified by the part of information extracted by the extraction circuit from the data.
- An extraction processing circuit for extracting and an error correction circuit for correcting an error of the data extracted by the extraction processing circuit are provided.
- the control information can include parameters related to the data after a predetermined number of frames.
- the extraction processing circuit can extract data specified by the parameter from the control information added to the data of a predetermined number of frames before the data of the current frame.
- the error correction circuit performs error correction of the control information added to the data of the current frame together with the extracted data, and the extraction circuit adds the data added to the data of the current frame.
- the parameter of the control information can be extracted.
- the control information may be TMCC information defined in ARIB STD-B44, and the parameters may be relative stream / slot information and relative stream / transmission stream ID correspondence table information.
- the error correction circuit can perform error correction using an LDPC code.
- the error correction circuit can be made to perform error correction with an operation clock corresponding to the amount of the extracted data.
- the receiving method of the present technology extracts a part of the control information added to the data, extracts the data specified by the extracted part of the information from the data, and extracts the extracted data Error correction.
- the program of the present technology extracts a part of the control information added to the data, extracts the data specified by the extracted part of the information from the data, and extracts the extracted data
- a computer is caused to execute a process including a step of performing error correction.
- a part of the control information added to the data is extracted, the data specified by the extracted part of the information is extracted from the data, and the extracted data Error correction is performed.
- FIG. 1 is a block diagram illustrating a configuration example of a general receiving apparatus.
- the receiving device 1 is, for example, a device that demodulates and plays back digital satellite broadcast program data (images and sounds).
- the image and sound of the program reproduced by the receiving device 1 are output from the display device 2 connected to the receiving device 1.
- the receiving device 1 is provided outside the display device 2, but may be provided inside the display device 2.
- the digital satellite broadcast received by the receiver 1 is, for example, an ARIB ⁇ ⁇ ⁇ STD-B44 standard advanced broadband satellite digital broadcast.
- program image data is encoded by a predetermined encoding method such as MPEG, and the program data of multiple channels is multiplexed and broadcasted.
- TMCC information which is control information related to transmission and multiplexing, is added to multiplexed data obtained by multiplexing program data of a plurality of channels.
- the receiving apparatus 1 includes A / D conversion circuits 11-1 and 11-2, a digital demodulation circuit 12, an error correction decoding circuit 13, a speed adjustment buffer 14, and an MPEG decoder 15.
- a modulated signal received by an antenna (not shown) is input to A / D conversion circuits 11-1 and 11-2.
- the A / D conversion circuit 11-1 performs A / D conversion on the input modulation signal and outputs a digital signal having an in-phase component (I channel).
- the A / D conversion circuit 11-2 performs A / D conversion on the input modulation signal and outputs a quadrature component (Q channel) digital signal.
- the digital demodulation circuit 12 performs digital demodulation processing on the digital signals supplied from the A / D conversion circuit 11-1 and the A / D conversion circuit 11-2, and outputs the in-phase component data generated by the digital demodulation processing and Output orthogonal component data.
- the error correction decoding circuit 13 generates multiplexed data as a transmission main signal based on the in-phase component data and the quadrature component data supplied from the digital demodulation circuit 12, and corrects the error.
- the error correction decoding circuit 13 generates TMCC information based on the in-phase component data and the quadrature component data supplied from the digital demodulation circuit 12, and performs error correction.
- an LDPC code is added as an inner code and a BCH code is added as an outer code to multiplexed data and TMCC information for each predetermined unit.
- error correction decoding circuit 13 error correction of multiplexed data and TMCC information is performed using these error correction codes.
- the error correction decoding circuit 13 outputs the multiplexed data and TMCC information after error correction to the speed adjustment buffer 14.
- the speed adjustment buffer 14 stores TS packets constituting the multiplexed data supplied from the error correction decoding circuit 13. Further, the speed adjustment buffer 14 separates TS packets that store program data of a designated channel based on the TMCC information supplied from the error correction decoding circuit 13. Then, the speed adjustment buffer 14 adjusts the rate so as to be the same as the data rate on the transmission side, and outputs the separated TS packet.
- the MPEG decoder 15 decodes the TS packet supplied from the speed adjustment buffer 14 and outputs the program data of the channel being received obtained by decoding to the display device 2.
- LDPC codes are used as error correction codes. Error correction using an LDPC code can exhibit high correction capability. However, as shown in FIG. 2, in a period during which error correction using the LDPC code is performed (LDPC operation period), current consumption increases and power consumption increases.
- the signal transmitted in the ARIB ⁇ ⁇ ⁇ STD-B44 standard advanced broadband satellite digital broadcasting is configured in units of frames.
- 1 frame is composed of 120 slots, and each slot is composed of a synchronization signal, a transmission signal point arrangement signal, and 66 data.
- TMCC information is divided and added after each data so as to be surrounded by a broken line in the figure.
- the TMCC information generated by collecting the divided and transmitted information includes parameters related to data after two frames.
- Each slot is assigned an ID corresponding to a program channel (hereinafter referred to as a transmission stream ID).
- the user can view a desired program by extracting the data (stream) of the slot corresponding to the requested transmission stream ID from the transmitted signal.
- error correction using LDPC codes is performed on multiplexed data and TMCC information for all slots.
- error correction using an LDPC code is performed on data in slots other than the slot corresponding to the requested transmission stream ID, that is, unnecessary data.
- a stream corresponding to the requested transmission stream ID is extracted.
- FIG. 4 is a block diagram illustrating a configuration example of a receiving device according to an embodiment of the present technology.
- the receiving device 21 is a device that demodulates and reproduces digital satellite broadcast program data (images and sounds), similar to the receiving device 1 of FIG.
- the image and sound of the program reproduced by the receiving device 21 are output from the display device 22 connected to the receiving device 21.
- the receiving device 21 is provided outside the display device 22, but may be provided inside the display device 22.
- the receiving device 21 includes A / D conversion circuits 31-1, 31-2, a digital demodulation circuit 32, an error correction decoding circuit 33, a speed adjustment buffer 34, and an MPEG decoder 35.
- the A / D conversion circuits 31-1, 31-2, the digital demodulation circuit 32, the speed adjustment buffer 34, and the MPEG decoder 35 in the reception device 21 are the same as those in the A / D conversion circuit 11- in the reception device 1 of FIG. 1 and 11-2, the digital demodulation circuit 12, the error correction decoding circuit 13, the speed adjustment buffer 14, and the MPEG decoder 15 have basically the same functions, and thus the description thereof is omitted.
- the error correction decoding circuit 33 includes an IQ conversion circuit 41, an extraction processing circuit 42, an error correction circuit 43, and an extraction circuit 44.
- the IQ conversion circuit 41 performs bit conversion between the in-phase component data and the quadrature component data supplied from the digital demodulation circuit 12 and supplies the converted data to the extraction processing circuit 42.
- the extraction processing circuit 42 extracts the data specified by the information supplied from the extraction circuit 44 and the TMCC information divided and added to each data from the data supplied from the IQ conversion circuit 41 to obtain an error. This is supplied to the correction circuit 43.
- the error correction circuit 43 performs error correction on the data and TMCC information extracted by the extraction processing circuit 42 using an LDPC code as an inner code and a BCH code as an outer code as error correction codes.
- the error correction circuit 43 supplies the data after error correction to the speed adjustment buffer 34. Further, the error correction circuit 43 supplies TMCC information after error correction to the extraction circuit 44.
- the extraction circuit 44 outputs the TMCC information supplied from the error correction circuit 43 to the speed adjustment buffer 14.
- the extraction circuit 44 extracts a part of the entire TMCC information supplied from the error correction circuit 43 and supplies the extracted information to the extraction processing circuit 42. Specifically, the extraction circuit 44 extracts a parameter relating to data after two frames as a part of the entire TMCC information. This parameter indicates the correspondence between the transmission stream ID and the slot corresponding to the designated channel. Extraction of information (parameters) by the extraction circuit 44 is performed, for example, for each frame.
- the extraction processing circuit 42 extracts the stream of the slot corresponding to the requested transmission stream ID from the data of the current frame based on the parameter included in the TMCC information added to the data two frames before,
- the error correction circuit 43 is supplied.
- step S1 the A / D conversion circuit 31-1 and the A / D conversion circuit 31-2 perform A / D conversion on the input modulation signal.
- step S2 the digital demodulation circuit 32 performs digital demodulation processing on the digital signal obtained by A / D conversion.
- step S3 the IQ conversion circuit 41 of the error correction decoding circuit 33 performs bit conversion of data obtained by the digital demodulation processing.
- step S4 the extraction processing circuit 42 divides the stream specified by the requested transmission stream ID from the data of the current frame based on the parameters supplied from the extraction circuit 44 and adds them to each data. Extracted with the TMCC information.
- step S5 the error correction circuit 43 performs error correction on the stream and TMCC information extracted by the extraction processing circuit 42.
- the data after error correction is supplied to the speed adjustment buffer 34, and the TMCC information after error correction is supplied to the extraction circuit 44.
- step S6 the extraction circuit 44 extracts parameters related to the transmission stream ID from the TMCC information after error correction, and feeds back the parameters to the extraction processing circuit 42.
- step S7 the speed adjustment buffer 34 adjusts and outputs the TS packets constituting the data supplied from the error correction circuit 43 so as to have the same rate as the data rate on the transmission side.
- step S8 the MPEG decoder 35 decodes the TS packet supplied from the speed adjustment buffer 34, and outputs the program data of the designated channel to the display device 2.
- the frames # 1 to # 8 include a stream whose transmission stream ID is ID3 and a stream whose ID is 4.
- the TMCC information including parameters related to data after 2 frames is input to the extraction circuit 44.
- the TMCC information added to the data of frame # 1 includes parameters related to the data of frame # 3. Therefore, after the error correction of the data of frame # 1, the TMCC information including the parameters related to the data of frame # 3 is input to the extraction circuit 44, as shown in the middle part of FIG.
- the TMCC information added to the data of frame # 2 includes parameters related to the data of frame # 4. Therefore, after error correction of the data of frame # 2 is performed, TMCC information including parameters relating to the data of frame # 4 is input to the extraction circuit 44, as shown in the middle part of FIG.
- TMCC information including parameters relating to data after two frames is sequentially input to the extraction circuit 44.
- a parameter indicating the correspondence between the transmission stream ID and the slot is supplied to the extraction processing circuit 42 as a parameter related to data after two frames included in the TMCC information.
- the extraction processing circuit 42 selects the stream specified by the requested transmission stream ID based on the parameters supplied from the extraction circuit 44 for the data after frame # 3. Can be extracted.
- ID3 is requested as the transmission stream ID, and the stream with the transmission stream ID ID3 is extracted from the data after frame # 3 and output.
- the extraction processing circuit 42 does not extract the streams, so all the streams are output.
- FIG. 7 shows the structure of TMCC information.
- TMCC information includes an 8-bit change instruction, 192-bit transmission mode / slot information, 128-bit stream type / relative stream information, and 896-bit packet format / relative stream information.
- TMCC information includes 3840-bit pointer / slot information, 480-bit relative stream / slot information, 256-bit relative stream / transmission stream ID correspondence table information, 8-bit transmission / reception control information, and 3614-bit extension information. included.
- relative stream / slot information and relative stream / transmission stream ID correspondence table information are extracted from the TMCC information.
- FIG. 8 shows the structure of relative stream / slot information.
- the relative stream / slot information indicates the correspondence between the slot and the relative stream number, and the relative stream number transmitted in each slot is indicated in order from the slot 1.
- the relative stream number is indicated by 4 bits.
- a relative stream number is also assigned to a dummy slot which is an invalid slot.
- FIG. 9 is a diagram showing the structure of relative stream / transmission stream ID correspondence table information.
- the relative stream / transmission stream ID correspondence table information indicates the correspondence between the relative stream number used in the relative stream / slot information and the transmission stream ID, and corresponds to each relative stream number in order from the relative stream number 0.
- a transmission stream ID is indicated.
- the transmission stream ID is indicated by 16 bits.
- the transport stream ID becomes a transport stream identifier (TS_ID) of MPEG-2 System when the stream type is MPEG-2 TS, and becomes a stream identifier (TLV stream ID) when the stream type is TLV format.
- FIG. 10 is a diagram showing details of stream extraction processing using relative stream / slot information and relative stream / transmission stream ID correspondence table information.
- the transmission stream ID is relative stream number 2.
- slots # 1 to # 120 among slots # 1 to # 120, slots # 1 to # 3,..., # 116 to # 120 have a relative stream number 3, and slot # 6 has a relative stream number F. (Hexadecimal number) is assigned a relative stream number D (hexadecimal number) to slot # 115. Slots # 4 and # 5 are dummy slots, and relative stream number 3 is assigned to them.
- Searched transmission stream ID 827 corresponds to relative stream number 3. Therefore, next, the stream of the slot to which the relative stream number 3 is assigned is extracted based on the relative stream / slot information.
- streams in slots # 1 to # 3,..., # 116 to # 120 corresponding to the relative stream number 3 are extracted. Since slots # 4 and # 5 to which relative stream number 3 is assigned are dummy slots, no stream is extracted.
- the stream extraction processing is performed using the relative stream / slot information and the relative stream / transmission stream ID correspondence table information.
- the slot stream corresponding to the requested transmission stream ID is extracted, and error correction using the LDPC code is performed on the extracted data. That is, error correction using an LDPC code is not performed on data in slots other than the slot corresponding to the requested transmission stream ID, that is, unnecessary data.
- the LDPC operation period in which the current consumption takes a large value as shown in the upper part of FIG. 11 becomes intermittent as shown in the lower part of FIG. That is, since the entire LDPC operation period is shortened, power consumption can be reduced in error correction using an LDPC code.
- the intermittent LDPC operation period as shown in the lower part of FIG. 11 is due to a reduction in the amount of data for error correction in slot units.
- the time required for processing data extracted for one frame is shorter than the time required for processing data of all slots for one frame. Therefore, the amount of time that power is consumed and the time that it is not consumed can be reduced by the amount of time that data is processed.
- the power consumption in the entire LDPC operation period can be reduced, the current fluctuation in the intermittent LDPC operation period as shown in the lower part of FIG. Not preferable.
- the error correction circuit 43 performs error correction with an operation clock corresponding to the amount of data extracted by the extraction processing circuit 42. Specifically, the frequency of the operation clock is lowered so that the smaller the amount of data extracted by the extraction processing circuit 42, the longer the processing takes.
- the current waveform in the LDPC operation period is averaged, and the current fluctuation can be reduced.
- the series of processes described above can be executed by hardware or software.
- a program constituting the software is installed from a program recording medium into a computer incorporated in dedicated hardware or a general-purpose personal computer.
- FIG. 13 is a block diagram illustrating a hardware configuration example 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 155 is further connected to the bus 154.
- the input / output interface 155 is connected to an input unit 156 composed of a keyboard, a mouse, etc., and an output unit 157 composed of a display, a speaker, and the like.
- the input / output interface 155 is connected to a storage unit 158 made up of a hard disk, a non-volatile memory, etc., a communication unit 159 made up of a network interface, etc., and a drive 160 that drives the removable media 161.
- the CPU 151 loads the program stored in the storage unit 158 to the RAM 153 via the input / output interface 155 and the bus 154 and executes it, thereby executing the above-described series of processing. Is done.
- the program executed by the CPU 151 is recorded on the removable medium 161 or provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital broadcasting, and is installed in the storage unit 158.
- the program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.
- this technique can take the following structures.
- An extraction circuit that extracts part of the control information added to the data;
- An extraction processing circuit for extracting data specified by the partial information extracted by the extraction circuit from the data;
- a receiving device comprising: an error correction circuit that performs error correction on the data extracted by the extraction processing circuit.
- the control information includes a parameter related to the data after a predetermined number of frames.
- the extraction processing circuit extracts data specified by the parameter from the control information added to the data of a predetermined number of frames before the data of the current frame.
- the error correction circuit performs error correction of the control information added to the data of the current frame together with the extracted data,
- the receiving device according to (3), wherein the extraction circuit extracts the parameter from the control information added to the data of the current frame.
- the control information is TMCC information defined by ARIB STD-B44,
- the receiving device according to any one of (2) to (4), wherein the parameters are relative stream / slot information and relative stream / transport stream ID correspondence table information.
- the receiving apparatus according to any one of (1) to (5), wherein the error correction circuit performs error correction using an LDPC code.
- the receiving apparatus according to any one of (1) to (6), wherein the error correction circuit performs error correction with an operation clock corresponding to the amount of the extracted data.
- Extract some of the control information added to the data Extracting the data specified by the extracted information from the data, A receiving method including a step of correcting an error of the extracted data.
- Extract some of the control information added to the data Extracting the data specified by the extracted information from the data, A program that causes a computer to execute processing including steps for correcting errors in extracted data.
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Abstract
Description
1.一般的な受信装置の構成例
2.本技術の受信装置の構成例
3.受信装置の処理
4.ストリームの抜出処理の流れ
5.ストリームの抜出処理の詳細
6.コンピュータの構成例
図1は、一般的な受信装置の構成例を示すブロック図である。
図4は、本技術の一実施形態に係る受信装置の構成例を示すブロック図である。
次に、図5のフローチャートを参照して、受信装置21の処理について説明する。
ここで、図6を参照して、抜出処理回路42によるストリームの抜出処理の流れについて説明する。
さらに、ストリームの抜出処理の詳細について説明する。
図13は、上述した一連の処理をプログラムにより実行するコンピュータのハードウェアの構成例を示すブロック図である。
(1)
データに付加された制御情報のうちの一部の情報を抽出する抽出回路と、
前記データから、前記抽出回路により抽出された前記一部の情報で特定されるデータを抜き出す抜出処理回路と、
前記抜出処理回路により抜き出されたデータの誤り訂正を行う誤り訂正回路と
を備える受信装置。
(2)
前記制御情報には、所定数フレーム後の前記データに関するパラメータが含まれる
(1)に記載の受信装置。
(3)
前記抜出処理回路は、現フレームの前記データから、所定数フレーム前の前記データに付加された前記制御情報のうちの前記パラメータで特定されるデータを抜き出す
(2)に記載の受信装置。
(4)
前記誤り訂正回路は、前記抜き出されたデータとともに、現フレームの前記データに付加された前記制御情報の誤り訂正を行い、
前記抽出回路は、現フレームの前記データに付加された前記制御情報のうちの前記パラメータを抽出する
(3)に記載の受信装置。
(5)
前記制御情報は、ARIB STD-B44で規定されるTMCC情報であり、
前記パラメータは、相対ストリーム/スロット情報、および、相対ストリーム/伝送ストリームID対応表情報である
(2)乃至(4)のいずれかに記載の受信装置。
(6)
前記誤り訂正回路は、LDPC符号を用いた誤り訂正を行う
(1)乃至(5)のいずれかに記載の受信装置。
(7)
前記誤り訂正回路は、前記抜き出されたデータの量に応じた動作クロックで、誤り訂正を行う
(1)乃至(6)のいずれかにに記載の受信装置。
(8)
データに付加された制御情報のうちの一部の情報を抽出し、
前記データから、抽出された前記一部の情報で特定されるデータを抜き出し、
抜き出されたデータの誤り訂正を行う
ステップを含む受信方法。
(9)
データに付加された制御情報のうちの一部の情報を抽出し、
前記データから、抽出された前記一部の情報で特定されるデータを抜き出し、
抜き出されたデータの誤り訂正を行う
ステップを含む処理をコンピュータに実行させるプログラム。
Claims (9)
- データに付加された制御情報のうちの一部の情報を抽出する抽出回路と、
前記データから、前記抽出回路により抽出された前記一部の情報で特定されるデータを抜き出す抜出処理回路と、
前記抜出処理回路により抜き出されたデータの誤り訂正を行う誤り訂正回路と
を備える受信装置。 - 前記制御情報には、所定数フレーム後の前記データに関するパラメータが含まれる
請求項1に記載の受信装置。 - 前記抜出処理回路は、現フレームの前記データから、所定数フレーム前の前記データに付加された前記制御情報のうちの前記パラメータで特定されるデータを抜き出す
請求項2に記載の受信装置。 - 前記誤り訂正回路は、前記抜き出されたデータとともに、現フレームの前記データに付加された前記制御情報の誤り訂正を行い、
前記抽出回路は、現フレームの前記データに付加された前記制御情報のうちの前記パラメータを抽出する
請求項3に記載の受信装置。 - 前記制御情報は、ARIB STD-B44で規定されるTMCC情報であり、
前記パラメータは、相対ストリーム/スロット情報、および、相対ストリーム/伝送ストリームID対応表情報である
請求項2に記載の受信装置。 - 前記誤り訂正回路は、LDPC符号を用いた誤り訂正を行う
請求項1に記載の受信装置。 - 前記誤り訂正回路は、前記抜き出されたデータの量に応じた動作クロックで、誤り訂正を行う
請求項1に記載の受信装置。 - データに付加された制御情報のうちの一部の情報を抽出し、
前記データから、抽出された前記一部の情報で特定されるデータを抜き出し、
抜き出されたデータの誤り訂正を行う
ステップを含む受信方法。 - データに付加された制御情報のうちの一部の情報を抽出し、
前記データから、抽出された前記一部の情報で特定されるデータを抜き出し、
抜き出されたデータの誤り訂正を行う
ステップを含む処理をコンピュータに実行させるプログラム。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2000079405A1 (fr) * | 1999-06-21 | 2000-12-28 | Hitachi, Ltd. | Processeur de donnees |
JP2002077765A (ja) * | 2000-08-25 | 2002-03-15 | Sony Corp | Bsデジタル放送復調/復号装置 |
JP2015080029A (ja) * | 2013-10-15 | 2015-04-23 | 日本放送協会 | 送信装置、受信装置、デジタル放送システム及びチップ |
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JP5867772B2 (ja) | 2010-09-10 | 2016-02-24 | ソニー株式会社 | 受信装置、およびプログラム |
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2017
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000079405A1 (fr) * | 1999-06-21 | 2000-12-28 | Hitachi, Ltd. | Processeur de donnees |
JP2002077765A (ja) * | 2000-08-25 | 2002-03-15 | Sony Corp | Bsデジタル放送復調/復号装置 |
JP2015080029A (ja) * | 2013-10-15 | 2015-04-23 | 日本放送協会 | 送信装置、受信装置、デジタル放送システム及びチップ |
Non-Patent Citations (1)
Title |
---|
ARIB STD-B44 VERSION 2.0-E1, 31 July 2014 (2014-07-31), pages 7 - 14, 37, 47-53, 57-82, XP055314241, Retrieved from the Internet <URL:http://www.arib.or.jp/english/html/overview/doc/6-STD-B44v2_0-E1.pdf> [retrieved on 20170824] * |
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