CN112335255B

CN112335255B - Receiving apparatus and receiving method

Info

Publication number: CN112335255B
Application number: CN201980041480.7A
Authority: CN
Inventors: 小岛知也; 平山雄一
Original assignee: Sony Semiconductor Solutions Corp
Current assignee: Sony Semiconductor Solutions Corp
Priority date: 2018-06-27
Filing date: 2019-06-13
Publication date: 2023-09-19
Anticipated expiration: 2039-06-13
Also published as: JP2021158395A; WO2020004051A1; KR102663341B1; CN112335255A; KR20210023858A

Abstract

The present technology relates to a receiving apparatus and a receiving method, which can more easily output a desired data stream. Provided is a receiving device provided with a control unit that performs the following control: control of selecting an output data stream of an output object extracted from a transmission data stream is performed based on whether a multi-frame header or header information of the multi-frame header is included in the transmission data stream transmitted by one or more carriers. The present technique is applicable, for example, to a receiver supporting digital cable television broadcasting.

Description

Receiving apparatus and receiving method

Technical Field

The present technology relates to a receiving apparatus and a receiving method, and more particularly, to a receiving apparatus and a receiving method capable of outputting a desired data stream more easily.

Background

In order to transmit a large-capacity signal that cannot be transmitted by one channel, it is known to develop a multicarrier transmission scheme that extends a conventional transmission scheme to divide a large-capacity signal and transmit the divided large-capacity signal on a plurality of carriers (for example, refer to patent document 1).

Prior art literature

Patent literature

Patent document 1: international publication No. 2016/117283

Disclosure of Invention

Technical problem to be solved by the invention

However, when various types of data streams such as data streams conforming to the multicarrier transmission scheme can be output, it is required to easily output a desired data stream.

The present technology has been studied in view of such a situation, and an object is to enable a desired data stream to be output more easily.

Solution for solving the technical problems

The receiving device according to one aspect of the present technology includes a control unit that performs control for selecting an output data stream to be extracted from a transport data stream transmitted by each of one or more carriers, based on whether or not a multiframe header is included in the transport data stream or header information of the multiframe header.

The reception method according to one aspect of the present technology is a reception apparatus that performs the following control: control of selecting an output data stream of an output object extracted from a transmission data stream transmitted by each of one or more carriers is performed based on whether a multiframe header or header information of the multiframe header is contained in the transmission data stream.

In a receiving apparatus and a receiving method according to one aspect of the present technology, the following control is performed: control of selecting an output data stream of an output object extracted from a transmission data stream transmitted by each of one or more carriers is performed based on whether a multiframe header or header information of the multiframe header is contained in the transmission data stream.

In addition, the receiving device according to one aspect of the present technology may be a stand-alone device or may be an internal block constituting one device.

Effects of the invention

According to one aspect of the present technique, a desired data stream may be more easily output.

In addition, the effects described herein are not necessarily limited, and may be any of the effects described in the present disclosure.

Drawings

Fig. 1 is a diagram showing the configuration of an embodiment of a transmission system to which the present technology is applied.

Fig. 2 is a block diagram showing an exemplary configuration of the transmitting apparatus.

Fig. 3 is a diagram showing an example of a data flow handled by the receiving apparatus.

Fig. 4 is a diagram showing an exemplary configuration of a multiframe.

Fig. 5 is a diagram showing an outline of syntax of a multi-frame header.

Fig. 6 is a diagram showing an example of the constitution of a TLV packet and a split TLV packet.

Fig. 7 is a block diagram showing a configuration example of a receiving apparatus having a conventional function.

Fig. 8 is a flowchart illustrating a flow of the data stream output setting process corresponding to the conventional function.

Fig. 9 is a flowchart illustrating a flow of the data stream output setting process corresponding to the conventional function.

Fig. 10 is a block diagram showing a configuration example of a receiving apparatus having a new function.

Fig. 11 is a diagram showing an example of reception setting, judgment reference, and automatic output selection of the cable television transmission scheme.

Fig. 12 is a diagram showing an example of channel selection and TS/TLV judgment.

Fig. 13 is a diagram showing an example of carriers in the case of the scheme of table a.

Fig. 14 is a diagram showing an example of signal flow in the demodulation IC at the time of the mode of table a.

Fig. 15 is a diagram showing an example of carriers in the case of the scheme of table B.

Fig. 16 is a diagram showing an example of signal flow in the demodulation IC at the time of the mode of table B.

Fig. 17 is a diagram showing an example of carriers in the case of the scheme of table C-a.

Fig. 18 is a diagram showing an example of signal flow in the demodulation IC at the time of the manner of table C-a.

Fig. 19 is a diagram showing an example of carriers in the case of the scheme of table D-a.

Fig. 20 is a diagram showing an example of signal flow in the demodulation IC at the time of the manner of table D-a.

Fig. 21 is a diagram showing an example of carriers in the case of the scheme of table E-b.

Fig. 22 is a diagram showing an example of signal flow in the demodulation IC at the time of the manner of table E-b.

Fig. 23 is a diagram showing an example of carriers in the case of the scheme of table F-a.

Fig. 24 is a diagram showing an example of signal flow in the demodulation IC at the time of the manner of table F-a.

Fig. 25 is a diagram showing an example of carriers in the case of the scheme of the table F-c.

Fig. 26 is a diagram showing an example of signal flow in the demodulation IC at the time of the manner of table F-c.

Fig. 27 is a diagram showing an example of carriers in the case of the scheme of table G-a.

Fig. 28 is a diagram showing an example of signal flow in the demodulation IC at the time of the manner of table G-a.

Fig. 29 is a diagram showing an example of carriers in the case of the scheme of table H-b.

Fig. 30 is a diagram showing an example of signal flow in the demodulation IC at the time of the manner of table H-b.

Fig. 31 is a flowchart illustrating a flow of processing at the transmitting side and the receiving side.

Fig. 32 is a flowchart illustrating the flow of the data stream output setting process corresponding to the new function.

Fig. 33 is a flowchart illustrating the flow of demodulation and synthesis processing.

Fig. 34 is a diagram showing an exemplary configuration of a computer.

Detailed Description

Embodiments of the present technology are described below with reference to the drawings. The following procedure is described.

1. Embodiments of the present technology

2. Modification examples

3. Computer structure

< 1. Embodiments of the present technology >

(configuration example of transmission System)

Fig. 1 is a diagram showing the configuration of an embodiment of a transmission system to which the present technology is applied. In addition, a system refers to a logical set of multiple devices.

In fig. 1, a transmission system 1 is a system supporting a broadcasting scheme of digital cable television broadcasting such as ISDB-C (Integrated Services Digital Broadcasting for Cable).

In the digital cable television broadcast (cable television), a multi-carrier transmission scheme is adopted, and a data stream exceeding the transmission capacity of one carrier is divided and transmitted by using a plurality of carriers on the transmitting side, and a data stream divided and transmitted by a plurality of carriers is synthesized on the receiving side. In the multicarrier transmission scheme, for example, a modulation scheme such as 64QAM (Quadrature Amplitude Modulation) or 256QAM may be used for each of the plurality of carriers.

The transmission system 1 includes a transmitting apparatus 10, a receiving apparatus 20, and a CATV transmission line 30. In fig. 1, only one receiving apparatus 20 is shown for simplicity of explanation, but in reality, each cable television subscriber's house is provided with a receiving apparatus 20.

The transmitting apparatus 10 is provided at a head end (head end) of a cable station.

The transmitting apparatus 10 receives a broadcast signal of terrestrial broadcast or satellite broadcast, processes a content data stream of a program or the like thereof, and transmits (retransmits) the content data stream to the receiving apparatus 20 via the CATV transmission line 30. In addition to the retransmission, the transmitting apparatus 10 may transmit a content data stream such as a program independently created by a cable television station or a program received via a communication line such as the internet to the receiving apparatus 20 via the CATV transmission line 30.

The CATV transmission line 30 is formed of a transmission medium such as a coaxial cable or an optical fiber, and connects the head end of the cable television station to the home of the cable television subscriber.

The receiving apparatus 20 is provided in a fixed receiver such as a television receiver or a Set Top Box (STB) in a house of a cable television subscriber.

The reception device 20 receives the broadcast signal transmitted from the transmission device 10 via the CATV transmission line 30, processes the content data stream, displays video such as a program on a display, and outputs sound synchronized with the video from a speaker. Thus, the cable television user can watch the contents such as the program.

(configuration example of transmitting device)

Fig. 2 is a block diagram showing an exemplary configuration of the transmitting apparatus 10 shown in fig. 1.

In fig. 2, the transmitting apparatus 10 includes input ports 101-1 to 101-3, a front-end signal processing unit 102, a slot allocation unit 103, TSMF processing units 104-1 to 104-3, QAM modulating units 105-1 to 105-3, and a mixing unit 106.

The input port 101-1 is a port for inputting a signal (TS signal) in the form of a transport data stream, and the TS signal input thereto is supplied to the slot allocation section 103.

The input port 101-2 is a port for inputting a signal (TLV signal) in the form of TLV (Type Length Value), and the TLV signal inputted thereto is supplied to the slot assignment unit 103.

The input port 101-3 supplies the IF signal or the RF signal inputted thereto to the front-end signal processing section 102.

The front-end signal processing section 102 applies front-end signal processing to the IF signal or RF signal supplied from the input port 101-3, and supplies it to the slot allocation section 103.

The time slot allocation unit 103 allocates the signals inputted thereto to time slots on a multiframe (TSMF: transport Streams Multiplexing Frame) to perform multiplexing (division multiplexing), and supplies the resulting signals to the TSMF processing units 104-1 to 104-3.

The TSMF processing section 104-1 applies TSMF-related TSMF processing to the signal supplied from the time division section 103, and supplies the resultant signal to the QAM modulation section 105-1.

The TSMF processing section 104-2 applies TSMF processing to the signal supplied from the time slot allocating section 103, and supplies the resultant signal to the QAM modulating section 105-2.

The TSMF processing section 104-3 applies TSMF processing to the signal supplied from the time slot allocating section 103, and supplies the resultant signal to the QAM modulating section 105-3.

The QAM modulator 105-1 applies modulation processing according to a modulation scheme such as 64QAM or 256QAM to the signal supplied from the TSMF processor 104-1 based on information such as NIT (Network Information Table) or header information of the TSMF, and supplies the resultant signal to the mixer 106.

The QAM modulator 105-2 applies modulation processing to the signal of the TSMF processor 104-2 based on NIT, header information of TSMF, and the like, and supplies the resultant signal to the mixer 106.

The QAM modulator 105-3 applies modulation processing to the signal of the TSMF processor 104-3 based on NIT, header information of TSMF, and the like, and supplies the resultant signal to the mixer 106.

The mixing section 106 mixes the signals supplied from the QAM modulating sections 105-1 to 105-3 and transmits (transmits) the signals as broadcast signals.

(processing example of receiving apparatus)

Fig. 3 is a diagram showing an example of a data stream processed by the reception apparatus 20 of fig. 1.

The reception apparatus 20 includes a reception system 200 including, for example, a demodulation IC, a synthesis apparatus, and the like. The reception system 200 processes and outputs a data stream extracted from the broadcast signal transmitted from the transmission apparatus 10.

Here, as the data stream handled by (the reception system 200 of) the reception apparatus 20, for example, a single transport data stream (single TS) according to a single TS multiplexing scheme, a plurality of transport data streams (plurality of TSs) according to a plurality of TS multiplexing scheme, a transport data stream according to a multi-carrier transmission scheme, and the like are included, and therefore, the reception system 200 needs to support various types of data streams.

A single TS is used, for example, for general broadcast oriented. On the other hand, a plurality of transport streams of TS and multicarrier transmission scheme are used for retransmitting content broadcast by satellite in cable television, for example.

In addition, as satellite broadcasting (BS broadcasting), advanced broadband satellite digital broadcasting (advanced BS broadcasting) has been started, and for example, a plurality of TSs can be utilized in ordinary BS broadcasting retransmission, and a transmission data stream of a multicarrier transmission scheme can be utilized in advanced BS broadcasting retransmission providing 4K and 8K ultra-high definition television broadcasting services.

(multiple frame composition)

Fig. 4 is a diagram showing an exemplary configuration of a multiframe.

In fig. 4, a plurality of subframes (TSMF) such as TS constitute 1 frame of 53 slots in total, and include 1 slot allocated to a frame header (TSMF header) and 52 slots allocated to data of programs such as program a, program B, and program C. Each program such as program a, program B, and program C is a program of a different broadcast station channel.

(outline of TSMF header)

Fig. 5 is a diagram showing a schematic syntax of a multi-frame header (TSMF header).

The TSMF header includes, as header information, a packet header, frame_sync, version_ number, relative _stream_number_mode, frame_type, stream_ status, stream _id/original_network_id, receiver_ status, reserved _for_future_ use, emergency _ indicator, relative _stream_number, extension information, and CRC field. These fields specify parameters of header information.

The packet header contains sync bytes, frame_pid, and continuity indicator. frame_sync is a field of the synchronization signal of the TSMF. version_number is a field for indicating a TSMF header change.

The relative_stream_number_mode is a field for distinguishing a slot configuration method. frame_type is a field for distinguishing between TSMF forms. stream_status is a field for indicating the relative stream number valid/invalid.

stream_id/original_network_id is a field for identifier/relative stream number correspondence information. In the following, stream_id is also referred to as a data stream identifier, and original_network_id is also referred to as a network identifier. In addition, the stream identifier (stream_id) and the network identifier (original_network_id) are also collectively referred to as identification information.

The receive_status is a field representing the reception information of the headend. reserved_for_future_use is a field (undefined) for future expansion. The urgent_indicator is a field for indicating an emergency alert. The relative_stream_number is a field for relative stream number and slot correspondence information.

When header information of the TSMF header is extended, the extension information is configured using the private_data extension area. The CRC is a field of CRC (CyclICRedundancy Check) value for error detection.

Here, the extension information defines, for example, information for synthesis. The extension information includes fields of eartvak_early_ warning, stream _type, group_id, number_of_ carriers, carrier _ sequence, number _of_frames, frame_ position, field _for_extension.

earthqke_early_warning is a field of seismic alert information for terrestrial digital broadcasting.

stream_type is a field for indicating the type of data stream. "TS" or "TLV" is designated as stream_type. That is, "TS" is specified for a Transport Stream (TS) containing TS packets, and "TLV" is specified for a transport stream (TLV) containing TLV packets (split TLV packets).

Hereinafter, stream_type is also referred to as type information. In addition, the TS packet is a fixed-length (e.g., 188 bytes) packet, and thus is also referred to as a fixed-length packet. On the other hand, TLV packets are variable length packets and are therefore also referred to as variable length packets.

The group_id is a field for identifying a carrier group.

number_of_carriers is a field for indicating the total number of carriers constituting a carrier group. carrier_sequence is a field for indicating the synthesis order of demodulation outputs of carriers. Hereinafter, the total number of carriers (number_of_carriers) and the carrier order (carrier_sequence) are also collectively referred to as synthesis information.

number_of_frames is a field for indicating the number of frames contained in the superframe. frame_position is a field for frame position information. field_for_extension is a field (undefined) for future extension.

(constitution of TLV and split TLV)

In the broadcast system of digital cable television broadcasting (for example, ISDB-C, etc.), a signal in TLV format (TLV signal) is output in the broadcast system of advanced BS broadcasting, etc., with respect to a signal in TS format (TS signal) although the signal is output after demodulation. Therefore, in order to transmit (transfer) TLV signals of a broadcast scheme such as ISDB-C broadcast scheme, it is necessary to convert them into signals of TS format.

That is, the TLV packet is fragmented, and the variable TLV vector is converted into a 188-byte fixed length form as a fragmented TLV packet. The TS packet is 188 bytes, and the time slot of the multiframe (TSMF) is 188 bytes of the same size as the TS packet.

Specifically, in fig. 6, for example, when TLV packet P1 and TLV packet P2 are consecutive, TLV packet P1 is divided into 3 parts in 185 byte units, and payloads of divided TLV packets DP1, DP2, DP3 are stored, respectively. In the split TLV packet DP, the payload is 185 bytes, and a 3-byte split TLV packet header is added. That is, the split TLV data inclusion is 188 bytes, including 3 bytes of header, 185 bytes of payload.

In the example of fig. 6, a portion (185-byte signal) of TLV packet P1 is stored in turn to the payloads of split TLV packets DP1, DP2, and the remaining portion (less than 185-byte signal) is stored to the payloads of split TLV packet DP 3. That is, the payload of the split TLV packet DP3 totals 185 bytes, including the remainder of the TLV packet P1 (less than 185 bytes of signal) and a portion of the following TLV packet P2 (less than 185 bytes of signal).

In the multicarrier transmission scheme, a form of a multiframe (TSMF header) as shown in fig. 4 and a split TLV packet as shown in fig. 6 are used for synthesis. At this time, by adding a TSMF header (fig. 5) to the TLV signal (TLV data stream) packetized by the split TLV data, it can be handled as a transport data stream composed of multiframes.

(example of existing functionality)

Here, in order to compare new functions to which the present technology is applied, the configuration and operation of the receiving apparatus 20 having the conventional functions will be described with reference to fig. 7 to 9.

Fig. 7 is a block diagram showing an exemplary configuration of the receiving device 20 having a conventional function.

In fig. 7, a receiving apparatus 20 having a conventional function includes a microcontroller 900, tuners 901-1 to 901-4, demodulation ICs 902-1 to 902-4, a system on chip 903, and a display 904.

The microcontroller 900 controls the operation of the various parts of the receiving device 20.

The tuners 901-1 to 901-4 receive the broadcast signal transmitted from the transmitting apparatus 10, apply necessary processing, and output the received broadcast signal to the demodulation ICs 902-1 to 902-4, respectively.

The demodulation ICs 902-2 to 902-4 perform demodulation processing on the reception signals of the tuners 901-2 to 901-4, and output the resultant transmission data stream to the demodulation IC902-1.

The demodulation IC902-1 performs demodulation processing on the received signal of the tuner 901-1. The demodulation IC902-1 synthesizes the transmission data stream obtained by the self-demodulation process and the transmission data streams of the demodulation ICs 902-2 to 902-4, and outputs the output data stream of the obtained output object to the system on chip 903.

The system on chip 903 decodes the output data stream of the demodulation IC902-1, and outputs the resultant image data to the display 904.

The display 904 displays an image corresponding to the image data of the system-on-chip 903. Although not shown in fig. 7, the sound data processed by the system on chip 203 is output to a speaker, and a sound corresponding to the sound data is output.

As described above, in the reception apparatus 20 (fig. 7) having the conventional function, the demodulation IC902-1 has the following functions: a function of demodulating the reception signal of the tuner 901-1; and a function of outputting the composite data stream and the transport data stream (single TS or multiple TS) from the demodulation IC902-1 by controlling the tuners 901-1 to 901-4 and the demodulation ICs 902-1 to 902-4 by the microcontroller 900.

Next, with reference to flowcharts of fig. 8 and 9, a flow of the data stream output setting process performed by the reception apparatus 20 (fig. 7) having the conventional function will be described.

Here, first, stream_id and original_network_id are set in the demodulation IC902-1 (S11), and the TS packet of the demodulation IC902-1 is read out (S12). Then, by the judgment processing in step S13, it is judged whether or not there is a TSMF packet in the demodulation IC 902-1.

In step S13, when it is determined that there is a TSMF packet (yes in S13), the process proceeds to step S14. Then, the data of the TSMF header is read out from the demodulation IC902-1 (S14), and stored in the memory (S15). At this time, the extension information is also read out from the TSMF header (S16), and it is determined whether or not the extension information exists through the determination processing of step S17.

In step S17, when it is determined that extension information exists (yes in S17), the process proceeds to step S18. In step S18, TSMF header processing is performed on the other demodulation IC 902-N. Here, the TSMF header processing corresponding to step S18 of fig. 8 is described in detail with reference to the flowchart of fig. 9.

In this TSMF header processing, n=2 is first set as an initial value of the demodulation IC902 (S31) until N > =4 (yes in S38), the N value is incremented (S37), and the loop of steps S32 to S38 is repeated.

That is, stream_id and original_network_id are set in the demodulation IC902-N (S32), and the TS packet of the demodulation IC902-1 is read out (S33). Then, by the judgment processing in step S34, it is judged whether or not there is a TSMF packet in the demodulation IC 902-N.

In step S34, when it is determined that there is a TSMF packet (yes in S34), the process proceeds to step S35. Then, the data of the TSMF header is read out from the demodulation IC902-N (S35), and stored in the memory (S36).

When the N value is incremented and it is determined that the condition N > =4 is not satisfied (no in S37, S38), the process returns to step S32, and the loop of steps S32 to S38 is repeated. Then, when it is determined that the condition N > =4 is satisfied (yes in S38), or when it is determined that there is no TSMF packet (no in S34), the TSMF header processing is ended, and the processing returns to step S18 in fig. 8.

In step S19 of fig. 8, the extension information obtained in the processing of step S16, the extension information obtained from the TSMF header obtained in the TSMF header processing (fig. 9), is processed. Then, by the judgment processing of step S20, it is judged whether or not synthesis is possible based on the result of the processing (S19) of the extension information.

In step S20, when it is determined that the synthesis is possible (yes in S20), the process proceeds to step S21. Then, the synthesis object data stream is set to the output form at the demodulation IC902-1 (S21). Next, by the judgment processing of step S22, it is judged whether the data stream type is "TLV" based on the result of the processing of the extension information (S19).

In step S22, when it is determined that the data stream type is "TLV", the process proceeds to step S23. And, the TLV data stream (TLV conversion object data stream) is set as a data stream form at the demodulation IC902-1 (S23). On the other hand, in step S22, when it is determined that the data stream type is "TS", the process proceeds to step S24. And, the TS data stream (non-TLV conversion object data stream) is set as a data stream form at the demodulation IC902-1 (S24).

On the other hand, when it is determined that there is no TSMF packet (no in S13), when it is determined that there is no extension information (no in S17), or when it is determined that synthesis is impossible (no in S20), the process proceeds to step S25. And, the non-synthesis object data stream is set to the output form at the demodulation IC902-1 (S25).

After the process of step S23, S24, or S25 is completed, the process proceeds to step S26. Then, as a data stream output, the demodulation IC902-1 is set to the ON state.

In the above, the flow of the data stream output setting processing corresponding to the existing function is described. In this data stream output setting process, for example, it takes time to read out the data of the demodulation IC902 by the processes of steps S11, S12, S14, and S18 (S32, S33, and S35 in fig. 9), S21, S22, S23, S24, and S26 in fig. 8. In particular, in fig. 7, since a plurality of tuners 901 are provided and a plurality of demodulation ICs 902 are provided correspondingly, it takes a longer time to read data from each demodulation IC 902. As a result, in (the receiving system 200 of) the receiving apparatus 20 having the conventional function, for example, after switching programs, the time until displaying the video increases.

In addition, in (the reception system 200 of) the reception apparatus 20, although the synthesis target data stream is synthesized based on header information (extension information) of the TSMF header of the TSMF packet, there are a large number of parameters in the header information, and it is complicated to determine which data stream is to be output and control the output data stream to be output. As shown in fig. 3, the (receiving system 200 of the) receiving apparatus 20 needs to process and output various types of data streams such as a transport data stream according to a single TS multiplexing scheme, a transport data stream according to a plurality of TS multiplexing schemes, and a transport data stream according to a multicarrier transmission scheme, and thus, it is required to easily output a desired data stream.

In addition, in the data stream output setting processing corresponding to the conventional function, it is necessary to store the data of the TSMF packet in the memory (S15 in fig. 8 and S36 in fig. 9), and the reception system 200 needs to prepare an additional memory. Which may cause problems in terms of cost and processing speed.

In view of such problems, new functions applying the present technology can more easily output a desired data stream. In addition, in the new function of the present technology, for example, after switching programs, the time required for displaying a new image is shortened, and the receiving system 200 does not need to provide an additional memory. The configuration and operation of the receiving apparatus 20 having the new function will be described below.

(configuration example of receiving device with New function)

Fig. 10 is a block diagram showing an exemplary configuration of the receiving apparatus 20 having a new function.

In fig. 10, the receiving apparatus 20 having the new function is configured to include tuners 201-1 to 201-4, demodulation ICs 202-1 to 202-4, a system on chip 203, and a display 204. Further, the tuner 201, the demodulation IC202, and the system on chip 203 correspond to at least a part of the reception system 200 of fig. 3.

The tuner 201-1 receives the broadcast signal transmitted from the transmitting apparatus 10 and applies necessary processing, and supplies the resultant received signal (signal of carrier wave) to the demodulation IC202-1. Like the tuner 201-1, the tuners 201-2 to 201-4 apply necessary processing to broadcast signals, and supply the resultant received signals to the demodulation ICs 202-2 to 202-4, respectively.

The demodulation IC202-2 applies demodulation processing (e.g., demodulation of 64QAM, 256QAM, etc.) to the received signal supplied from the tuner 201-2, and supplies the resultant transmission data stream to the demodulation IC202-1. Like the demodulation IC202-2, the demodulation IC202-3 and the demodulation IC202-4 apply demodulation processing to the received signal, and supply the resultant transport data stream to the demodulation IC202-1.

Demodulation IC202-1 includes control unit 210, demodulation unit 211, TSMF processing units 212-1 to 212-4, synthesis unit 213, TLV conversion unit 214, selector 215, and selector 216. The reception signal of the tuner 201-1 and the transmission data streams of the demodulation ICs 202-2 to 202-4 are input to the demodulation IC202-1.

The control unit 210 controls operations of the respective parts of the demodulation IC202-1. For example, the control unit 210 is constituted by a processor such as a microcontroller.

The demodulation section 211 applies demodulation processing (for example, demodulation of 64QAM, 256QAM, or the like) to the reception signal of the tuner 201-1, and supplies the resultant transmission data stream to the TSMF processing section 212-1.

The TSMF processing section 212-1 performs TSMF processing with respect to the TSMF packet on the transport stream supplied from the demodulation section 211. The TSMF processing includes, for example, (TSMF header of) a TSMF packet from a transport data stream extracted from a received signal (signal of carrier), or extracting extension information of the TSMF header, or the like.

The TSMF processing unit 212-1 supplies the control unit 210 with a TSMF notification including the detection result of (the TSMF header of) the TSMF packet and header information (extension information) of the TSMF header. Further, the TSMF processing section 212-1 supplies the transport data stream supplied from the demodulation section 211 to the synthesizing section 213. Further, the TSMF processing unit 212-1 may extract and output a packet corresponding to the specified flow identifier and network identifier.

Like the TSMF processing unit 212-1, the TSMF processing units 212-2 to 212-4 perform TSMF processing on the transport streams of the external demodulation ICs 202-2 to 202-4, and supply TSMF notification including the detection result of the TSMF packet and header information (extension information) of the TSMF header to the control unit 210, respectively. The TSMF processing units 212-2 to 212-4 supply the transport streams of the external demodulation ICs 202-2 to 202-4 to the synthesizing unit 213, respectively.

The control unit 210 controls output stream selection of an output destination based on TSMF notification including the detection result of the TSMF packet supplied from the TSMF processing units 212-1 to 212-4 and header information (extension information).

Here, the control unit 210 determines whether or not the transport stream (output format) is a synthesis target stream based on the TSMF notification including the detection result of the TSMF packet. The control unit 210 supplies a control signal corresponding to the determination result of the synthesis target data stream to the selector 216.

Further, the control section 210 determines whether the data stream type (data stream format) of the transport data stream is "TLV" or "TS" based on the extension information of the TSMF header. The control section 210 supplies a control signal corresponding to the determination result of the data stream type to the selector 215.

The synthesizing section 213 synthesizes the transport streams supplied from the TSMF processing sections 212-1 to 212-4, and supplies the synthesized stream (divided TLV stream or TS stream) obtained by the synthesis to the TLV converting section 214 or the selector 215.

In addition, in the composite data stream, the data stream type of the split TLV data stream is designated as "TLV", and is a TLV conversion object data stream. On the other hand, the data stream type of the TS data stream is designated as "TS", and is a non-TLV conversion object data stream.

The TLV conversion object data stream is input to the TLV conversion section 214. The TLV conversion section 214 converts the divided TLV data packets contained in the TLV conversion object data stream (TLV data stream) into TLV data packets. At this time, since the data stream type is "TLV", the selector 215 selects the output side of the TLV conversion section 214 as an input based on the control signal of the control section 210, and the TLV conversion object data stream (TLV data stream) of the TLV conversion section 214 is input to the selector 215 and then output to the selector 216.

On the other hand, the non-TLV conversion object data stream (TS data stream) is directly input to the selector 216. At this time, the data stream type is "TS", and the selector 215 selects the output side of the synthesizing section 213 as an input based on the control signal of the control section 210, and the non-TLV conversion target data stream (TS data stream) of the synthesizing section 213 is directly input to the selector 215 and then output to the selector 216.

The selector 216 selects the non-synthesis target data stream input from the demodulation unit 211 or the TSMF processing unit 212-1 or the synthesis target data stream (TLV conversion target data stream or non-TLV conversion target data stream) input from the selector 215 based on the control signal of the control unit 210, and outputs the selected data stream as an output target output data stream to the system-on-chip 203.

The system on chip 203 performs predetermined processing such as decoding on the output data stream input from the demodulation IC202-1 (the selector 216), and outputs the resultant video data (or image data) to the display 204.

The display 204 is a display device (display apparatus) such as a liquid crystal display (LCD: liquid Crystal Display) or an organic EL display (OLED: organICLight Emitting Diode). The display 204 displays a video (or image) corresponding to the video data (or image data) input by the system on chip 203.

In fig. 10, although illustration is omitted for convenience of explanation, audio (sound) corresponding to sound data processed by the system on chip 203 can be output from a sound output device such as a speaker.

The receiving device 20 is constructed as described above.

(example of a watch)

In fig. 11, reception settings, judgment criteria, and automatic output selections are listed for various cable television transmission modes, and are assigned to tables a to H, respectively.

The transmission method is determined depending on a single TS or a plurality of TSs, a plurality of carriers, a single QAM or a plurality of QAM, or the like specified by a standard specification, a usage specification, or the like.

The reception setting indicates whether or not ID specification of a data stream identifier (stream_id) and a network identifier (original_network_id) is required. The judgment standard indicates whether the TSMF data packet has a TSMF header or not and whether header information has extension information or not.

The automatic output selection indicates whether the output form is a composite object data stream or a non-composite object data stream, and whether the data stream form is a TLV conversion object data stream or a non-TLV conversion object data stream.

The standard specification a specifies, for example, a single TS multiplexing device specification, a plurality of TS multiplexing device specifications, a multicarrier transmission scheme specification, and the like, in accordance with a standard specification of digital cable television broadcasting and the like set by the CATV technology association of japan.

The usage specification B specifies a single QAM modulation scheme, a plurality of QAM modulation schemes, and the like, for example, in accordance with a cross modulation usage specification and the like set by the cable laboratory in japan.

Here, the standard specification a and the usage specification B are combined, and when the single TS scheme is adopted, the number of carriers is "1", the multiplexing scheme is "single TS", and when the multiple TS scheme is adopted, the number of carriers is "1", and the multiplexing scheme is "multiple TS". In the following description, the former method is referred to as a table a method, and the latter method is referred to as a table B method.

In addition, the standard specification a and the usage specification B are combined, and when the single QAM scheme is adopted for a plurality of carriers, the number of carriers is "1", the multiplexing scheme is "split TLV", and when the single QAM scheme is adopted, the number of carriers is "1", and the multiplexing scheme is "split TLV" or "TS". In the following description, the former method is referred to as a table C method, and the latter method is referred to as a table D or a table E method.

Further, the standard a and the usage specification B are combined, and when a plurality of carriers are adopted in a plurality of QAM schemes, the number of carriers is "2 to 4", the multiplexing scheme is "split TLV", and when a plurality of carriers are adopted, the number of carriers is "2 to 4", and the multiplexing scheme is "split TLV" or "TS". In the following description, the former method is referred to as a table F method, and the latter method is referred to as a table G or a table H method.

In the method of table a, the number of carriers is "1", the multiplexing method is "single TS", and the following conditions are applied as the reception setting, the judgment criterion, and the automatic output selection. That is, as reception settings, the IDs of stream_id, original_network_id are designated as "unnecessary". Further, as a judgment reference, since the TSMF header is not added, the extension information (number_of_carriers, stream_type) is "none". Further, as an automatic output selection, the composition and TLV are converted into "non-object".

In the scheme of table B, the number of carriers is "1", the multiplexing scheme is "multiple TSs", and the IDs of stream_id and original_network_id are designated as "needed" as reception settings. In addition, as a judgment reference, although the TSMF header is added, the extension information (number_of_ carriers, stream _type) is "none". In addition, as an automatic output option, the composition and TLV are converted into "non-object".

In addition, in the TSMF header, the private_data extension area is used for configuration of extension information, but when all bits of private_data are "1" or "0", it can be determined that extension information is "none".

In the scheme of table C, the number of carriers is "1", the multiplexing scheme is "split TLV", and the IDs of stream_id and original_network_id are designated as "required" as reception settings. In addition, as a judgment reference, a TSMF header is added, and extension information is included. As extension information, number_of_carriers= "1", stream_type= "0" are specified. In addition, as an automatic output selection, the composition and TLV are converted into "objects".

In the scheme of table D, the number of carriers is "1", the multiplexing scheme is "split TLV and TS", and the IDs of stream_id and original_network_id are designated as "required" as reception settings. In addition, as a judgment reference, a TSMF header is added, and extension information is included. As extension information, number_of_carriers= "1", stream_type= "0" are specified. In addition, as an automatic output selection, the composition and TLV are converted into "objects".

In the scheme of table E, the number of carriers is "1", the multiplexing scheme is "split TLV and TS", and the IDs of stream_id and original_network_id are designated as "required" as reception settings. In addition, as a judgment reference, a TSMF header is added, and extension information is included. As extension information, number_of_carriers= "1", stream_type= "1" are specified. Further, as an automatic output selection, the composition is "object", and the TLV is converted into "non-object".

In the scheme of table F, the multiplexing scheme with the number of carriers of "2 to 4" is "split TLV", and the IDs of stream_id and original_network_id are designated as "needed" as reception settings. In addition, as a judgment reference, a TSMF header is added, and extension information is included. As extension information, number_of_carriers= "2 to 4", stream_type= "0" are specified. In addition, as an automatic output selection, the composition and TLV are converted into "objects".

In the table G format, the number of carriers is "2 to 4", the multiplexing format is "split TLV and TS", and the IDs of stream_id and original_network_id are designated as "needed" as reception settings. In addition, as a judgment reference, a TSMF header is added, and extension information is included. As extension information, number_of_carriers= "2 to 4", stream_type= "0" are specified. In addition, as an automatic output selection, the composition and TLV are converted into "objects".

In the scheme of table H, the number of carriers is "2 to 4", the multiplexing scheme is "split TLV and TS", and the IDs of stream_id and original_network_id are designated as "required" as reception settings. In addition, as a judgment reference, a TSMF header is added, and extension information is included. As extension information, number_of_carriers= "2 to 4", stream_type= "1" are specified. Further, as an automatic output selection, the composition is "object", and the TLV is converted into "non-object".

(example of TS/TLV judgment)

The data stream type can be identified by the stream_type included in the extension information of the TSMF header, and when the multicarrier transmission scheme, which is the scheme of tables C to H, is adopted, the combination of a plurality of carriers may be established (successful) or may be erroneous.

First, in the multi-carrier transmission scheme, when stream_type= "0" is designated, the data stream type is recognized as TLV packets, and when carrier order and total number (carrier_sequence, number_of_carriers) are confirmed and it is determined that the combination is possible, the combination of a plurality of carriers is established. In the following description, this will be referred to as the case of table a.

Second, in the multi-carrier transmission scheme, when stream_type= "1" is designated, the data stream type is recognized as TS packets, and when the order and total number of carriers are confirmed and it is determined that the combination is possible, the combination of a plurality of carriers is established. In the following description, this will be referred to as the case of table b.

Third, in the multi-carrier transmission scheme, if the stream_type= "1" or "0" is not specified, the data stream type is recognized as a single TS or a plurality of TSs, or if the carrier order or the total number cannot be confirmed and it is determined that the combination is impossible, the combination becomes a plurality of carrier combination errors. Hereinafter, this case will be referred to as the case of table c.

In the following description, for convenience of explanation, the form of tables a to H shown in fig. 11 and the form of tables a to c shown in fig. 12 are collectively referred to as "form of tables x to y". In the expression "form of table x-y", x corresponds to any one of "a" to "H" in the form of tables a to H of fig. 11, and y corresponds to any one of "a" to "c" in the case of tables a to c of fig. 12. Note that, when the tables a to c in fig. 12 are not satisfied, the expression of "-y" is omitted.

(1) Table A mode

(example of carrier wave)

Fig. 13 is a diagram showing an example of carriers when the scheme of table a is adopted.

As shown in fig. 13, when the condition of table a is satisfied, the reception apparatus 20 receives one carrier C1. The carrier C1 includes a single transport stream (single TS) but does not include TSMF packets as a transport stream. That is, in the scheme of table a, the transport stream does not include (the TSMF header of) the TSMF packet, and the header information does not include extension information.

(Signal flow)

Fig. 14 is a diagram showing an example of a signal flow in the demodulation IC202-1 when the scheme of table a is adopted.

In fig. 14, the configuration of the demodulation IC202-1 in the reception device 20 is extracted and illustrated, and the signal flow is indicated by a bold arrow in the figure. The meaning of these diagrams is the same in other drawings (diagrams showing examples of signal flows) corresponding to the drawings described below.

The demodulation section 211 performs demodulation processing on the received signal inputted thereto, and supplies the resultant transport data stream (single TS) to the TSMF processing section 212-1. In the case of table a, since one carrier C1 is received, only the TSMF processing unit 212-1 is input with the transport stream, out of the TSMF processing units 212-1 to 212-4.

The TSMF processing section 212-1 performs TSMF processing on the transport stream (single TS) of the demodulation section 211, and tries to detect the TSMF packet. At this time, the TSMF processing section 212-1 fails to detect a TSMF packet from the single transport stream, and thus provides a TSMF notification indicating that the TSMF packet was not detected to the control section 210.

The control unit 210 determines that the transport stream (single TS) is a non-composite target stream based on the TSMF notification (non-detection notification of the TSMF packet) of the TSMF processing unit 212-1, and supplies a control signal according to the determination result to the selector 216.

The selector 216 selects a transport stream (single TS) which is a non-synthesis target stream inputted from the demodulation section 211 based on a control signal of the control section 210, and outputs an output stream which is an output target thereof to the system-on-chip 203 in the subsequent stage.

As described above, in the case of table a, the transport stream (single TS) transmitted by one carrier C1 does not include (the TSMF header of) the TSMF packet, and therefore, the single transport stream extracted from the reception signal of the carrier C1 by the demodulation IC202-1 is selected as the non-synthesis target stream and output as the output stream.

(2) Table B mode

(example of carrier wave)

Fig. 15 is a diagram showing an example of carriers when the scheme of table B is adopted.

As shown in fig. 15, when the condition of table B is satisfied, the reception apparatus 20 receives one carrier C1. The carrier C1 contains a plurality of Transport Streams (TSs), and the TSMF header contains no extension information although it contains TSMF packets.

The plurality of TSs include data streams of program a, program B, and program C. In the data stream of the program a, the stream_id= "0x11" is assigned to the stream identifier, and the original_network_id= "0x22" is assigned to the network identifier. In addition, the stream_id= "0x33", the original_network_id= "0x44", and the stream_id= "0x55", the original_network_id= "0x66" are allocated to the data stream of the program B.

That is, in the scheme of table B, the transport stream includes (the TSMF header of) the TSMF packet, and the header information does not include extension information.

(Signal flow)

Fig. 16 is a diagram showing an example of a signal flow in the demodulation IC202-1 when the scheme of table B is adopted.

In the embodiment of table B, the data streams of program a, program B, and program C are included in carrier C1 as a plurality of TSs, and here, the identification information for identifying the output data streams to be output designates stream_id= "0x11" and original_network_id= "0x22", respectively, and are provided in control unit 210 and TSMF processing unit 212.

The demodulation section 211 performs demodulation processing on the received signal inputted thereto, and supplies the resultant transport data stream (TS) to the TSMF processing section 212-1. In the case of table B, since one carrier C1 is received, only the TSMF processing unit 212-1 receives the transport stream.

The TSMF processing unit 212-1 applies TSMF processing to the Transport Stream (TS) of the demodulation unit 211, and attempts to detect TSMF packets designated as stream_id= "0x11" and original_network_id= "0x22" in header information of the TSMF header. At this time, the TSMF processing section 212-1 may detect a TSMF packet from a plurality of transport streams and the TSMF header does not contain extension information, so that a TSMF notification indicating that the TSMF packet was detected and that the extension information does not exist is provided to the control section 210. Further, the TSMF processing section 212-1 extracts and outputs transport streams (streams of program a) identified by stream_id= "0x11", and original_network_id= "0x 22".

The control unit 210 determines that the Transport Stream (TS) is a non-synthesis target stream and is a plurality of TSs based on the TSMF notification (notification that the TSMF packet is detected and the extension information is not present) of the TSMF processing unit 212-1, and supplies a control signal according to the determination result to the selector 216.

The selector 216 selects a non-composite target data stream input from the TSMF processing unit 212-1 as a transport data stream (a data stream of the program a) of a plurality of TSs based on a control signal of the control unit 210, and outputs the selected transport data stream as an output data stream to the system-on-chip 203.

As described above, in the case of table B, the Transport Stream (TSs) transmitted by one carrier C1 contains TSMF packets, and the header information of the TSMF header does not contain extension information, so that the multiple transport streams extracted from the reception signal of carrier C1 by demodulation IC202-1 are selected as non-synthesis target streams and the multiple TSs, and outputted as output streams.

(3) Table C-a mode

(example of carrier wave)

Fig. 17 is a diagram showing an example of carriers when the scheme of table C-a is adopted.

As shown in fig. 17, when the condition of the table C-a is satisfied, the reception device 20 receives one carrier C1. In this carrier C1, a transport data stream (TLV) with split TLV packets is included, TSMF packets are included, and the TSMF header includes extension information.

That is, in the manner of table C-a, the transport data stream (TLV) contains (the TSMF header of) the TSMF packet, and the header information contains extension information. In addition, in the extension information, the data stream type is designated as "TLV".

(Signal flow)

Fig. 18 is a diagram showing an example of a signal flow in the demodulation IC202-1 when the manner of table C-a is adopted.

The demodulation section 211 performs demodulation processing on the received signal inputted thereto, and supplies the resultant transport data stream (TLV) to the TSMF processing section 212-1. In the case of table C-a, since one carrier C1 is received, only TSMF processing unit 212-1 receives the transport stream (TLV).

The TSMF processing section 212-1 performs TSMF processing on the transport stream (TLV) of the demodulation section 211, and tries to detect the TSMF packet. At this time, the TSMF processing section 212-1 detects the TSMF packet from a transport stream (TLV) including the split TLV packet, and the TSMF header can extract extension information, and thus provides a TSMF notification indicating that the TSMF packet was detected, and the extracted extension information (header information) to the control section 210. Further, the TSMF processing section 212-1 supplies the transport data stream (TLV) of the demodulation section 211 to the synthesizing section 213.

The synthesizing unit 213 removes TSMF packets included in the transport data stream (TLV) input from the TSMF processing unit 212-1, and supplies the resultant split TLV data stream to the TLV converting unit 214. The TLV conversion unit 214 processes the split TLV data stream input from the synthesis unit 213, and converts the split TLV data packet into a TLV data packet.

The control unit 210 determines that the transport data stream (TLV) is the synthesis target data stream based on the TSMF notification (notification of the detection of the TSMF packet and the presence of extension information) of the TSMF processing unit 212-1, and supplies a control signal according to the determination result to the selector 216. The control unit 210 determines that the transport data stream (TLV) is a TLV conversion target data stream based on the extension information (data stream type: "TLV") of the TSMF processing unit 212-1, and supplies a control signal according to the determination result to the selector 215.

The selector 215 selects a TLV conversion object data stream (TLV data stream) input by the TLV conversion section 214 based on a control signal of the control section 210, and supplies the TLV conversion object data stream (TLV data stream) to the selector 216. The selector 216 selects a TLV conversion target data stream (TLV data stream) input from the selector 215 based on a control signal of the control section 210, and outputs the TLV conversion target data stream as an output data stream to the system on chip 203.

As described above, in the case of table C-a, the transport stream (TLV) transmitted by one carrier C1 contains TSMF packets, and the TSMF header contains extension information (stream type: "TLV"), and in the demodulation IC202-1, the transport stream (TLV) extracted from the received signal of the carrier C1 is selected as the synthesis target stream, and also selected as the TLV conversion target stream, and output as the output stream.

(4) Table D-a mode

(example of carrier wave)

Fig. 19 is a diagram showing an example of carriers when the scheme of the table D-a is adopted.

As shown in fig. 19, when the condition of the table D-a is satisfied, the reception apparatus 20 receives one carrier C1. The carrier C1 contains two transport data streams (TLV/TS), namely a transport data stream (TLV) and a transport data stream (TS).

The transport data stream (TLV) includes TSMF packets and the TSMF header includes extension information. In addition, in the transport data stream (TLV), stream_id= "0x11" is allocated as a data stream identifier, and original_network_id= "0x22" is allocated as a network identifier.

The Transport Stream (TS) includes TSMF packets and the TSMF header includes extension information. In addition, in the Transport Stream (TS), stream_id= "0x33" is allocated as a stream identifier, and original_network_id= "0x44" is allocated as a network identifier.

That is, in the manner of table D-a, the two transport data streams (TLVs/TSs) each contain (the TSMF header of) a TSMF packet, and the header information contains extension information. In addition, in the extension information, the data stream type is to specify "TLV" or "TS" for each transport data stream.

(Signal flow)

Fig. 20 is a diagram showing an example of a signal flow in the demodulation IC202-1 when the manner of the table D-a is adopted.

In the case of the scheme of table D-a, the carrier C1 includes two transport streams (TLV/TS), i.e., a transport stream (TLV) and a Transport Stream (TS), and here, as identification information for identifying the output data stream to be output, stream_id= "0x11" and original_network_id= "0x22" are specified, respectively, and are set in the control unit 210 and the TSMF processing unit 212.

The demodulation section 211 performs demodulation processing on the received signal inputted thereto, and supplies the resultant transport data stream (TLV/TS) to the TSMF processing section 212-1. In the case of table D-a, since one carrier C1 is received, only the TSMF processing unit 212-1 receives the transport stream (TLV/TS).

The TSMF processing unit 212-1 performs TSMF processing on the transport stream (TLV/TS) of the demodulation unit 211 based on the set identification information, and attempts to detect TSMF packets designated as stream_id= "0x11" and original_network_id= "0x22" in header information of the TSMF header.

At this time, the TSMF processing section 212-1 detects the TSMF packet of the detection target from the transport stream (TLV) and extracts extension information from the TSMF header thereof. The TSMF processing unit 212-1 supplies a TSMF notification indicating that the TSMF packet was detected and the extracted extension information (header information) to the control unit 210. Further, the TSMF processing section 212-1 supplies the transport data stream (TLV) identified by stream_id= "0x11", and original_network_id= "0x22" to the synthesizing section 213.

As described above, when the table D-a is used, in the demodulation IC202-1, of the two types of transmission data streams (TLV/TS) transmitted from one carrier C1, the transmission data stream (TLV) including (the TSMF header of) the TSMF data packet identified from the set identification information (stream_id= "0x11", original_network_id= "0x 22") is selected as the synthesis target data stream, and the TSMF header further includes the extension information (data stream type: "TLV"), and thus is also selected as the TLV conversion target data stream and output as the output data stream.

(5) Table E-b mode

(example of carrier wave)

Fig. 21 is a diagram showing an example of carriers when the scheme of table E-b is adopted.

As shown in fig. 21, when the condition of table E-b is satisfied, the reception apparatus 20 receives one carrier C1. The carrier C1 includes a transport data stream (TLV) and a transport data stream (TS).

In the scheme of the table E-b, as in the scheme of the table D-a (fig. 19), stream_id= "0x11" and original_network_id= "0x22" are allocated to the transport data stream (TLV), and stream_id= "0x33" and original_network_id= "0x44" are allocated to the transport data stream (TS), respectively.

That is, in the manner of table E-b, the two transport data streams (TLVs/TSs) each contain (the TSMF header of) a TSMF packet, and the header information contains extension information. In addition, in the extension information, the data stream type is designated as "TLV" or "TS" for each transport data stream.

(Signal flow)

Fig. 22 is a diagram showing an example of a signal flow in the demodulation IC202-1 when the manner of table E-b is adopted.

In the case of the scheme of table E-b, carrier C1 contains two types of data streams (TLV/TS), and here, the identification information for identifying the output data stream to be output is set in control unit 210 and TSMF processing unit 212, while specifying stream_id= "0x33" and original_network_id= "0x44", respectively.

The demodulation section 211 performs demodulation processing on the received signal inputted thereto, and supplies the resultant transport data stream (TLV/TS) to the TSMF processing section 212-1. In the case of the scheme of table E-b, since one carrier C1 is received, only the TSMF processing unit 212-1 receives the transport stream (TLV/TS).

The TSMF processing unit 212-1 performs TSMF processing on the transport stream (TLV/TS) of the demodulation unit 211 based on the set identification information, and attempts to detect TSMF packets designated as stream_id= "0x33" and original_network_id= "0x44" in header information of the TSMF header.

At this time, the TSMF processing section 212-1 detects a TSMF packet of the detection target from the Transport Stream (TS), and extracts extension information from the TSMF header thereof. The TSMF processing unit 212-1 supplies a TSMF notification indicating that the TSMF packet was detected and the extracted extension information (header information) to the control unit 210. Further, the TSMF processing section 212-1 supplies the transport data stream (TS) identified by stream_id= "0x33", and original_network_id= "0x44" to the synthesizing section 213.

The synthesizing unit 213 removes TSMF packets included in the data stream (TS) input from the TSMF processing unit 212-1.

The control unit 210 determines that the Transport Stream (TS) is the synthesis target stream based on the TSMF notification (notification of the detection of the TSMF packet and the presence of extension information) of the TSMF processing unit 212-1, and supplies a control signal according to the determination result to the selector 216. The control unit 210 determines that the Transport Stream (TS) is a non-TLV conversion target stream based on the extension information (stream type: "TS") of the TSMF processing unit 212-1, and supplies a control signal according to the determination result to the selector 215.

The selector 215 selects the non-TLV conversion target data stream (TS data stream) input from the synthesizing section 213 based on the control signal of the control section 210, and supplies the selected stream to the selector 216. The selector 216 selects a non-TLV conversion target data stream (TS data stream) input from the selector 215 based on a control signal of the control section 210, and outputs the selected stream to the system on chip 203.

As described above, when the table E-b is used, in the demodulation IC202-1, of the two types of transmission data streams (TLV/TS) transmitted via one carrier C1, the transmission data stream (TS) including (the TSMF header of) the TSMF packet identified from the set identification information (stream_id= "0x33", original_network_id= "0x 44") is selected as the synthesis target data stream, and the TSMF header includes the extension information (data stream type: "TS"), and thus is also selected as the non-TLV conversion target data stream, and output as the output data stream.

(6) Table F-a mode

(example of carrier wave)

Fig. 23 is a diagram showing an example of carriers when the scheme of table F-a is adopted.

As shown in fig. 23, when the conditions of table F-a are satisfied, reception apparatus 20 receives 4 carriers C1 to C4. Each of the carriers C1 to C4 includes a transmission data stream (TLV). Further, each transport data stream (TLV) includes a TSMF packet, and a TSMF header includes extension information.

Among the carriers C1 to C4, three of the carriers C1, C2, and C4 are the carriers to be synthesized, and stream_id= "0x11" and original_network_id= "0x22" are allocated as common identification information. On the other hand, among the carriers C1 to C4, one wave of the carrier C3 is a non-composite object, and stream_id= "0x33" and original_network_id= "0x44" are allocated as unique identification information.

That is, in the scheme of table F-a, the transport data Streams (TLVs) transmitted via carriers C1 to C4 each include (TSMF header of) TSMF packets, and the header information includes extension information.

In the extension information, "TLV" is commonly assigned to each carrier as a data stream type, and a unique value is assigned to each carrier in the carrier order and total number. For example, in the extension information of the carrier C1, the carrier order and the total number are designated as "1" and "3", respectively. For example, the carrier order and the total number are designated as "2" and "3" in the extension information of the carrier C2, and as "3" and "3" in the extension information of the carrier C4, respectively.

(Signal flow)

Fig. 24 is a diagram showing an example of a signal flow in the demodulation IC202-1 when the manner of the table F-a is adopted.

In the case of the scheme of table F-a, each of the 4 carriers C1 to C4 includes a transport data stream (TVL), and here, as identification information for identifying the output data stream to be output, each of stream_id= "0x11" and original_network_id= "0x22" is specified and set in the control unit 210 and the TSMF processing unit 212.

The transport data stream (TLV) included in the carrier C1 of the first wave is input to the TSMF processing section 212-1 via the demodulation section 211. The TSMF processing unit 212-1 performs TSMF processing on the transport stream (TLV) of the demodulation unit 211 based on the set identification information, and attempts to detect TSMF packets in which stream_id= "0x11" and original_network_id= "0x22" are specified in header information of the TSMF header.

At this time, the TSMF processing section 212-1 detects the TSMF packet of the detection target from the transport stream (TLV) and extracts extension information from the TSMF header thereof. The TSMF processing unit 212-1 supplies a TSMF notification indicating that the TSMF packet was detected and the extracted extension information (header information) to the control unit 210.

Here, among the extension information obtained from the carrier C1, stream_type= "TLV" as a data stream type, carrier_sequence= "1" as a carrier order, and number_of_carriers= "3" as a total number of carriers are specified. Further, the TSMF processing section 212-1 supplies the transport data stream (TLV) identified by stream_id= "0x11", and original_network_id= "0x22" to the synthesizing section 213.

The transport data stream (TLV) included in the carrier C2 of the second wave is input from the external demodulation IC202-2 to the TSMF processing section 212-2. The TSMF processing section 212-2 tries to detect a TSMF packet in which stream_id= "0x11" and original_network_id= "0x22" are specified, based on the set identification information. Then, the TSMF processing unit 212-2 supplies the control unit 210 with TSMF notification indicating that the TSMF packet was detected and the extracted extension information (header information).

Here, in the extension information obtained from the carrier C2, stream_type= "TLV", carrier_sequence= "2", number_of_carriers= "3" are specified. Further, the TSMF processing section 212-2 supplies the transport data stream (TLV) identified by stream_id= "0x11", and original_network_id= "0x22" to the synthesizing section 213.

The transport data stream (TLV) included in the carrier C3 of the third wave is input from the external demodulation IC202-3 to the TSMF processing section 212-3. The TSMF processing section 212-3 tries to detect the TSMF packet based on the set identification information. Here, since TSMF packets in which stream_id= "0x33" and original_network_id= "0x44" are specified are detected, the TSMF processing unit 212-3 supplies TSMF notification indicating that the TSMF packet is detected and extension information of no object exists, and the extracted extension information (header information) to the control unit 210.

The transport data stream (TLV) included in the carrier C4 of the fourth wave is input from the external demodulation IC202-4 to the TSMF processing section 212-4. The TSMF processing section 212-4 tries to detect a TSMF packet in which stream_id= "0x11" and original_network_id= "0x22" are specified, based on the set identification information. Then, the TSMF processing unit 212-4 supplies the control unit 210 with TSMF notification indicating that the TSMF packet was detected and the extracted extension information (header information).

Here, in the extension information obtained from the carrier C4, stream_type= "TLV", carrier_sequence= "3", number_of_carriers= "3" are specified. Further, the TSMF processing section 212-4 supplies the transport data stream (TLV) identified by stream_id= "0x11", and original_network_id= "0x22" to the synthesizing section 213.

The control unit 210 extracts header information (e.g., extension information) from (the TSMF header of) the TSMF packet processed by the TSMF processing units 212-1 to 212-4 from the TSMF header identified by stream_id= "0x11" and original_network_id= "0x 22". Here, the carriers including the TSMF header identified by stream_id= "0x11", and original_network_id= "0x22" are three waves of the carrier C1 of the first wave, the carrier C2 of the second wave, and the carrier C4 of the fourth wave.

The control unit 210 confirms the carrier order and the total number based on the extracted header information (composite information of the extension information of the three waves). Here, since the carrier sequence (carrier_sequence) is "1", "2", and "3", the total number of carriers (number_of_carriers) of the three waves is "3", the number is the same and the total number is the same, and the three waves can be synthesized, the control unit 210 determines that the transport data Streams (TLVs) corresponding to the three waves (carriers C1, C2, and C4) are the data streams to be synthesized, and supplies the control signals corresponding to the determination results to the selector 216.

Further, the control section 210 confirms the data stream type specified in the extracted header information (extension information of three waves). Here, since each of the three waves designates stream_type= "TLV", the control unit 210 determines that the transmission data stream (TLV) corresponding to the three waves (carriers C1, C2, and C4) is a TLV conversion target data stream, and supplies a control signal corresponding to the determination result to the selector 215.

The combining unit 213 combines the transport data Streams (TLVs) input from the TSMF processing unit 212-1, the TSMF processing unit 212-2, and the TSMF processing unit 212-4, and supplies the resultant combined data stream (split TLV data stream) to the TLV converting unit 214. The TLV conversion unit 214 processes the split TLV data stream input from the synthesis unit 213, and converts the split TLV data packet into a TLV data packet.

The selector 215 selects a TLV conversion object data stream (TLV data stream) input from the TLV conversion section 214 based on a control signal of the control section 210, and supplies the TLV conversion object data stream (TLV data stream) to the selector 216. The selector 216 selects a TLV conversion target data stream (TLV data stream) input from the selector 215 based on a control signal of the control section 210, and outputs the TLV conversion target data stream as an output data stream to the system on chip 203.

As described above, when the scheme of table F-a is adopted, in the demodulation IC202-1, among the transmission data Streams (TLVs) transmitted through the four waves of the carriers C1 to C4, the transmission data stream (TLV) of the three waves including (the TSMF header of) the TSMF packet identified from the set identification information (stream_id= "0x11", original_network_id= "0x 22") (in which the carrier order and the total number in the composition information of the extension information of the three waves have been matched) is selected as the composition target data stream, and the TSMF header includes the extension information (data stream type: "TLV"), and thus is also selected as the TLV conversion target data stream, and output as the output data stream.

(7) Manner of Table F-c

(example of carrier wave)

Fig. 25 is a diagram showing an example of carriers when the scheme of the table F-c is adopted.

As shown in fig. 25, when the conditions of table F-C are satisfied, the reception device 20 receives three carriers C1 to C3. Each of the carriers C1 to C3 includes a transmission data stream (TLV). Further, each transport data stream (TLV) includes a TSMF packet, and a TSMF header includes extension information.

The carriers C1 to C3 are all carriers to be synthesized, and stream_id= "0x11" and original_network_id= "0x22" are allocated as common identification information.

That is, in the scheme of tables F to C, the transport data stream (TLV) transmitted through carriers C1 to C3 contains (the TSMF header of) the TSMF packet, and the header information contains extension information.

In the extension information, each carrier is designated as a "TLV" as a data stream type, and the carrier order and total number are designated as unique values for each carrier. For example, the carrier order and the total number are designated as "1" and "3" in the extension information of the carrier C1, as "1" and "3" in the extension information of the carrier C2, and as "2" and "3" in the extension information of the carrier C3.

(Signal flow)

Fig. 26 is a diagram showing an example of a signal flow in the demodulation IC202-1 when the manner of the table F-c is adopted.

In the case of the scheme of tables F to C, the three carriers C1 to C3 each include a transport stream (TLV), and here, as identification information for identifying the output stream to be output, stream_id= "0x11" and original_network_id= "0x22" are designated, respectively, and are set in the control unit 210 and the TSMF processing unit 212.

The transport data stream (TLV) included in the carrier C1 of the first wave is input to the TSMF processing section 212-1 via the demodulation section 211. The TSMF processing section 212-1 performs TSMF processing on the transport stream (TLV) of the demodulation section 211 based on the set identification information, and tries to detect TSMF packets in which stream_id= "0x11" and original_network_id= "0x22" are specified in header information of the TSMF header.

At this time, the TSMF processing section 212-1 detects the TSMF packet of the detection target from the transport stream (TLV) and extracts extension information from the TSMF header thereof. The TSMF processing unit 212-1 supplies a TSMF notification indicating that the TSMF packet was detected and the extracted extension information (header information) to the control unit 210. Here, in the extension information obtained from the carrier C1, stream_type= "TLV", carrier_sequence= "1", number_of_carriers= "3" are specified, respectively.

The transport data stream (TLV) included in the carrier C2 of the second wave is input from the external demodulation IC202-2 to the TSMF processing section 212-2. Based on the set identification information, the TSMF processing section 212-2 attempts to detect a TSMF packet in which stream_id= "0x11" and original_network_id= "0x22" are specified. Then, the TSMF processing unit 212-2 supplies the control unit 210 with TSMF notification indicating that the TSMF packet was detected and the extracted extension information (header information). Here, in the extension information obtained from the carrier C2, stream_type= "TLV", carrier_sequence= "1", number_of_carriers= "3" are specified.

The transport data stream (TLV) included in the carrier C3 of the third wave is input from the external demodulation IC202-3 to the TSMF processing section 212-3. The TSMF processing section 212-3 tries to detect a TSMF packet in which stream_id= "0x11" and original_network_id= "0x22" are specified, based on the set identification information. Then, the TSMF processing unit 212-3 supplies the control unit 210 with TSMF notification indicating that the TSMF packet was detected and the extracted extension information (header information). Here, in the extension information obtained from the carrier C3, stream_type= "TLV", carrier_sequence= "2", number_of_carriers= "3" are specified.

The control unit 210 extracts header information (e.g., extension information) from the TSMF header identified by stream_id= "0x11" and original_network_id= "0x22" from the TSMF header processed by the TSMF processing units 212-1 to 212-3. Here, the carriers including the TSMF header identified by stream_id= "0x11", and original_network_id= "0x22" are three waves of the carrier C1 of the first wave, the carrier C2 of the second wave, and the carrier C3 of the third wave.

The control unit 210 confirms the carrier order and the total number based on the extracted header information (composite information of the extension information of the three waves). Here, since the carrier_sequence is repeated by "1", "2", and "1", and is not synthesizable, the control unit 210 determines that the transport data Streams (TLVs) corresponding to the three waves are non-synthesis target data streams, and supplies a control signal corresponding to the determination result to the selector 216.

The selector 216 selects a transport stream (TLV) as a non-synthesis target stream input from the demodulation section 211 based on a control signal of the control section 210, and outputs the transport stream as an output stream to the system-on-chip 203.

As described above, when the table F-C is used, the transmission data stream (TLV) transmitted through the three waves of the carriers C1 to C3 in the demodulation IC202-1 includes (the TSMF header of) the TSMF packet identified by the set identification information (stream_id= "0x11", original_network_id= "0x 22"), but the carrier order and the total number in the composite information of the extension information of the three waves do not match, and therefore the transmission data stream (TLV) of one carrier (for example, carrier C1) is selected as the non-composite object data stream and outputted as the output data stream.

(8) Table G-a mode

(example of carrier wave)

Fig. 27 is a diagram showing an example of carriers when the scheme of table G-a is adopted.

As shown in fig. 27, when the condition of table G-a is satisfied, the reception device 20 receives the two carriers C1, C2. Each of the carriers C1 and C2 includes two transport data streams (TLV/TS) of a transport data stream (TLV) and a transport data stream (TS). In addition, each transport data stream includes a TSMF packet, and a TSMF header includes extension information.

The two carriers C1 and C2 are carriers to be combined, and stream_id= "0x11" and original_network_id= "0x22" are allocated as common identification information in the transport stream (TLV). On the other hand, in the Transport Stream (TS), stream_id= "0x33", and original_network_id= "0x44" are allocated as general identification information.

That is, in the scheme of table G-a, the transport data stream (TLV/TS) transmitted via carriers C1, C2 contains (the TSMF header of) the TSMF packet, and the header information contains extension information.

In addition, in extension information of a transmission data stream (TLV), a "TLV" is commonly assigned to each carrier as a data stream type, and an eigenvalue is assigned to each carrier in the carrier order and total number. For example, the carrier order and total number are designated "1" and "2" in the extension information of the carrier C1, and "2" in the extension information of the carrier C2. In addition, in extension information of a Transport Stream (TS), a "TS" is commonly designated for each carrier as a data stream type.

(Signal flow)

Fig. 28 is a diagram showing an example of a signal flow in the demodulation IC202-1 when the manner of the table G-a is adopted.

In the case of the table G-a, the two carriers C1 and C2 each include a transport stream (TLV/TS), and here, identification information for identifying the output data stream to be output is set in the control unit 210 and the TSMF processing unit 212, while stream_id= "0x11" and original_network_id= "0x22" are specified.

The data stream (TLV/TS) included in the carrier C1 of the first wave is input to the TSMF processing unit 212-1 via the demodulation unit 211. The TSMF processing unit 212-1 performs TSMF processing on the transport stream (TLV/TS) of the demodulation unit 211 based on the set identification information, and attempts to detect TSMF packets in which stream_id= "0x11" and original_network_id= "0x22" are specified in header information of the TSMF header.

Here, in the extension information obtained from the carrier C1, stream_type= "TLV", carrier_sequence= "1", number_of_carriers= "2" are specified, respectively. Further, the TSMF processing section 212-1 supplies the transport data stream (TLV) identified by stream_id= "0x11", and original_network_id= "0x22" to the synthesizing section 213.

The data stream (TLV/TS) included in the carrier C2 of the second wave is input from the external demodulation IC202-2 to the TSMF processing section 212-2. The TSMF processing section 212-2 tries to detect a TSMF packet in which stream_id= "0x11" and original_network_id= "0x22" are specified, based on the set identification information. Then, the TSMF processing unit 212-2 supplies the control unit 210 with TSMF notification indicating that the TSMF packet was detected and the extracted extension information (header information).

Here, in the extension information obtained from the carrier C2, stream_type= "TLV", carrier_sequence= "2", number_of_carriers= "2" are specified. Further, the TSMF processing section 212-2 supplies the transport data stream (TLV) identified by stream_id= "0x11", and original_network_id= "0x22" to the synthesizing section 213.

The control unit 210 extracts header information (e.g., extension information) from (the TSMF header of) the TSMF packet processed by the TSMF processing unit 212-1 and the TSMF processing unit 212-2, by the TSMF header identified by stream_id= "0x11" and original_network_id= "0x 22". Here, the carrier including the TSMF header identified by stream_id= "0x11" and original_network_id= "0x22" is two waves, that is, the carrier C1 of the first wave and the carrier C2 of the second wave.

The control unit 210 confirms the carrier order and the total number based on the extracted header information (the combination information of the extension information of the two waves). Here, since the carrier sequence (carrier_sequence) is "1" and "2", there are no duplication and deletion, and the total number of carriers (number_of_carriers) of the two waves is "2", the number is the same and the total number is the same, and the transmission data Streams (TLVs) corresponding to the two waves (carriers C1 and C2) are determined to be the data streams to be synthesized by the control unit 210, and the control signal corresponding to the determination result is supplied to the selector 216.

Further, the control section 210 confirms the data stream type specified in the extracted header information (extension information of two waves). Here, since both waves specify stream_type= "TLV", the control unit 210 determines that the transmission data stream (TLV) corresponding to both waves (carriers C1, C2) is a TLV conversion target data stream, and supplies a control signal corresponding to the determination result to the selector 215.

The combining unit 213 combines the transport data Streams (TLVs) input from the TSMF processing unit 212-1 and the TSMF processing unit 212-2, respectively, and supplies the resultant combined data stream (split TLV data stream) to the TLV converting unit 214. The TLV conversion unit 214 processes the split TLV data stream input from the synthesis unit 213, and converts the split TLV data packet into a TLV data packet.

As described above, when the table G-a is used, in the demodulation IC202-1, of the two types of transmission data streams (TLV/TS) transmitted by the two waves of the carriers C1, C2, the transmission data stream (TLV) including (the TSMF header of) the TSMF data packet identified from the set identification information (stream_id= "0x11", original_network_id= "0x 22") is selected as the synthesis target data stream, and the TSMF header includes the extension information (data stream type: "TLV"), and is thus also selected as the TLV conversion target data stream, and is output as the output data stream.

(9) Table H-b mode

(example of carrier wave)

Fig. 29 is a diagram showing an example of carriers when the scheme of table H-b is adopted.

As shown in fig. 29, when the condition of table H-b is satisfied, the reception device 20 receives the two carriers C1, C2. Each of the carriers C1 and C2 includes a transport data stream (TLV) and a transport data stream (TS). In addition, each transport data stream includes a TSMF packet, and a TSMF header includes extension information.

In addition, two of the carriers C1 and C2 are carriers to be combined, and stream_id= "0x11" and original_network_id= "0x22" are allocated as common identification information in a transport stream (TLV). On the other hand, as a Transport Stream (TS), general identification information is allocated with stream_id= "0x33", and original_network_id= "0x44".

That is, in the scheme of table H-b, the transport data stream (TLV/TS) transmitted over carriers C1, C2 contains (the TSMF header of) the TSMF packet, and the header information contains extension information.

In addition, in the extension information of the Transport Stream (TS), a "TS" is commonly assigned to each carrier as a data stream type, and a unique value is assigned to each carrier in the carrier order and total number. For example, "1" and "2" are designated in the extension information of the carrier C1, and "2" are designated in the extension information of the carrier C2. In addition, in extension information of a transmission data stream (TLV), a "TLV" is commonly specified for each carrier as a data stream type.

(Signal flow)

Fig. 30 is a diagram showing an example of a signal flow in the demodulation IC202-1 when the manner of the table H-b is adopted.

In the case of the scheme of table H-b, the two carriers C1 and C2 each include a transport stream (TLV/TS), and here, as identification information for identifying the output data stream to be output, stream_id= "0x33" and original_network_id= "0x44" are designated, respectively, and are set in the control unit 210 and the TSMF processing unit 212.

The data stream (TLV/TS) included in the carrier C1 of the first wave is input to the TSMF processing unit 212-1 via the demodulation unit 211. The TSMF processing unit 212-1 performs TSMF processing on the transport stream (TLV/TS) of the demodulation unit 211 based on the set identification information, and detects TSMF packets in which stream_id= "0x33" and original_network_id= "0x44" are specified in header information of the TSMF header.

At this time, the TSMF processing section 212-1 detects a TSMF packet of the detection target from the Transport Stream (TS), and extracts extension information from the TSMF header thereof. The TSMF processing unit 212-1 supplies a TSMF notification indicating that the TSMF packet was detected and the extracted extension information (header information) to the control unit 210.

Here, in the extension information obtained by the carrier C1, stream_type= "TS", carrier_sequence= "1", and number_of_carriers= "2" are specified, respectively. Further, the TSMF processing section 212-1 supplies the transport data stream (TS) identified by stream_id= "0x33", and original_network_id= "0x44" to the synthesizing section 213.

The data stream (TLV/TS) included in the carrier C2 of the second wave is input from the external demodulation IC202-2 to the TSMF processing section 212-2. Based on the set identification information, the TSMF processing section 212-2 attempts to detect a TSMF packet in which stream_id= "0x33" and original_network_id= "0x44" are specified. Then, the TSMF processing unit 212-2 supplies the control unit 210 with TSMF notification indicating that the TSMF packet was detected and the extracted extension information (header information).

Here, in the extension information obtained from the carrier C2, stream_type= "TS", carrier_sequence= "2", number_of_carriers= "2" are specified. Further, the TSMF processing section 212-2 supplies the transport data stream (TS) identified by stream_id= "0x33", and original_network_id= "0x44" to the synthesizing section 213.

The control unit 210 extracts header information (e.g., extension information) from (the TSMF header of) the TSMF packet processed by the TSMF processing unit 212-1 and the TSMF processing unit 212-2, the TSMF header being identified by stream_id= "0x33" and original_network_id= "0x 44". Here, the carrier including the TSMF header identified by stream_id= "0x33", and original_network_id= "0x44" is two waves, that is, the carrier C1 of the first wave and the carrier C2 of the second wave.

The control unit 210 confirms the carrier order and the total number based on the extracted header information (the combination information of the extension information of the two waves). Here, since the carrier sequence (carrier_sequence) is "1" and "2", there are no duplication and deletion, and the total number of carriers (number_of_carriers) of the two waves is "2", the number is the same and the total number is the same, and the transmission data streams (TS) corresponding to the two waves (carriers C1 and C2) are determined to be the data streams to be synthesized by the control unit 210, and the control signal corresponding to the determination result is supplied to the selector 216.

Further, the control section 210 confirms the data stream type specified in the extracted header information (extension information of two waves). Here, since both waves specify stream_type= "TS", the control unit 210 determines that the transport data stream (TS) corresponding to both waves (carriers C1, C2) is a non-TLV conversion target data stream, and supplies a control signal corresponding to the determination result to the selector 215.

The synthesizing unit 213 synthesizes the Transport Streams (TSs) input from the TSMF processing unit 212-1 and the TSMF processing unit 212-2, respectively, and outputs the resultant synthesized streams (TS streams).

The selector 215 selects the non-TLV conversion target data stream (TS data stream) input from the synthesizing section 213 based on the control signal of the control section 210, and supplies the selected data stream to the selector 216. The selector 216 selects a non-TLV conversion target data stream (TS data stream) input from the selector 215 based on a control signal of the control section 210, and outputs the selected data stream as an output data stream to the system on chip 203.

As described above, when the scheme of table H-b is adopted, in the demodulation IC202-1, of the two transmission data streams (TLV/TS) transmitted by the two waves of the carriers C1, C2, the transmission data stream (TS) including (the TSMF header of) the TSMF packet identified from the set identification information (stream_id= "0x33", original_network_id= "0x 44") is selected as the synthesis target data stream, and the TSMF header includes the extension information (data stream type: "TS"), and is thus also selected as the non-TLV conversion target data stream, and is output as the output data stream.

(flow of processing on transmitting side and receiving side)

Next, the flow of the processing on the transmitting side and the processing on the receiving side will be described with reference to flowcharts of fig. 31 to 33.

In fig. 31, the processing of steps S111 to S113 is performed by the transmitting apparatus 10 such as a headend, and the processing of steps S211 to S213 is performed by the receiving apparatus 20 such as a television receiver provided in a cable television subscriber' S home.

The transmission device 10 processes the contents such as the programs of terrestrial broadcasting, satellite broadcasting, and the programs independently produced by the cable station (S111), divides each carrier as necessary, and then applies modulation processing according to a modulation scheme such as 64QAM or 256QAM (S112), for example, to transmit the resultant signals as a cable broadcast signal (S113).

The broadcast signal is a signal corresponding to a single TS, a plurality of TSs, a transport stream of a multicarrier transmission scheme, or the like, for example. The broadcast signal transmitted by the transmitting apparatus 10 is received by the receiving apparatus 20 via the CATV transmission line 30.

In step S211, the tuners 201-1 to 201-4 receive the broadcast signal transmitted from the transmitting apparatus 10. Further, the demodulation ICs 202-2 to 202-4 perform demodulation processing on the reception signals received by the tuners 201-2 to 201-4, and supply the demodulation signals to the demodulation IC202-1.

In step S212, the demodulation IC202-1 demodulates the received signal of the tuner 201-1, and performs a synthesis process of the transmission data stream obtained by the demodulation process and the transmission data streams of the demodulation ICs 202-2 to 202-4. In addition, the demodulation and synthesis process will be described in detail with reference to the flowchart of fig. 33.

In step S213, the system on chip 203 performs processing such as decoding on the output data stream of the demodulation IC202-1. As a result, the receiving device 20 displays the video of the content such as the program on the display 204, and outputs the sound synchronized with the video from the speaker.

The processing flows of the transmitting side and the receiving side are described above.

(flow of data stream output setting processing of New function)

Next, with reference to the flowchart of fig. 32, the flow of the data stream output setting process corresponding to the new function will be described.

In step S221, a control device (e.g., a microcontroller, a processor, etc.) including the control unit 210 or an external control unit sets stream_id and original_network_id to the demodulation IC202-1 based on an instruction of a user (so-called a setter user), for example. Here, for example, the control unit 210 and the TSMF processing units 212-1 to 212-4 set stream_id and original_network_id as identification information.

In step S222, the control device including the control section 210 or the external control section sets the demodulation IC202-1 to the ON state to be output as a data stream.

The new-function data stream output setting process is performed, for example, before the process (demodulation and synthesis process) in step S212 is started, and after the process in step S222 is completed, the process is completed.

The flow of the data stream output setting process corresponding to the new function is described above.

(flow of demodulation and Synthesis processing)

Next, with reference to the flowchart of fig. 33, a flow of demodulation and synthesis processing corresponding to the processing of step S212 of fig. 31 will be described. This demodulation and synthesis process is performed by the demodulation IC 202-1.

In step S231, the demodulation unit 211 demodulates the received signal of the tuner 201-1.

In step S232, the TSMF processing units 212-1 to 212-4 perform TSMF processing on the transport stream inputted thereto.

For example, here, based on the identification information (stream_id, original_network_id) set in the processing of step S221 of fig. 32, TSMF processing is performed for each transport data stream, and an attempt is made to detect a TSMF packet in which the identification information (stream_id, original_network_id) is specified in the header information of the TSMF header. Then, when the TSMF notification indicating whether or not the TSMF packet (TSMF header) is detected and the header information of the TSMF header includes extension information, the extension information (header information) is transmitted to the control unit 210.

In step S233, the control unit 210 confirms whether or not there is a TSMF header based on the information of the TSMF processing units 212-1 to 212-4, and confirms extension information of header information when there is a TSMF header.

In step S234, the control unit 210 determines whether or not the TSMF header is included based on the result of the determination in step S233.

In step S234, when it is determined that the TSMF header is not included, the process advances to step S235. In step S235, the control unit 210 controls the selector 216 to output the transport stream (single TS) as the non-synthesis target stream, which is input from the demodulation unit 211, as the output stream. The flow of this process corresponds to the form of table a (fig. 13 and 14).

In step S234, when it is determined that the TSMF header is included, the process advances to step S236. In step S236, the control unit 210 determines whether or not header information of the TSMF header includes extension information based on the result of the determination in step S233.

In step S236, when it is determined that the header information of the TSMF header does not contain extension information, the process advances to step S237. In step S237, the control unit 210 controls the selector 216 to output the non-composite target data stream input from the TSMF processing unit 212-1 as an output data stream, which is a transport data stream of a plurality of TSs (for example, a data stream of a program a). The flow of this process corresponds to the form of table B (fig. 15 and 16).

In step S236, when it is determined that the header information of the TSMF header includes extension information, the process advances to step S238. In step S238, the synthesizing unit 213 performs a synthesizing process of the transport data stream inputted to at least one of the TSMF processing units 212-1 to 212-4.

In step S239, the control unit 210 determines whether the type of data stream included in the extension information is "TLV" or "TS".

In step S239, when it is determined that the type of data stream included in the extension information is "TLV", the process proceeds to step S240.

In step S240, the TLV conversion unit 214 processes the split TLV data stream input from the synthesis unit 213, and converts the split TLV data packet into a TLV data packet.

In step S241, the control unit 210 controls the selector 215 and the selector 216 to output a TLV conversion target data stream (TLV data stream) as an output data stream. The flow of this process corresponds to the form of table C-a (FIGS. 17 and 18), the form of table D-a (FIGS. 19 and 20), the form of table F-a (FIGS. 23 and 24), and the form of table G-a (FIGS. 27 and 28).

In addition, in step S239, when it is determined that the data stream type included in the extension information is "TS", the process advances to step S242.

In step S242, the control unit 210 controls the selector 215 and the selector 216 to output a non-TLV conversion target data stream (TS data stream) as an output data stream. The flow of this process corresponds to the method of table E-b (FIGS. 21 and 22) and the method of table H-b (FIGS. 29 and 30).

After the processing in steps S235, S237, S241, and S242 is completed, the processing returns to step S212 in fig. 31, and the subsequent processing is executed.

In the demodulation and synthesis processing shown in fig. 33, although not explicitly described, when the header information of the TSMF header includes extension information, synthesis information (carrier_sequence, number_of_carriers) of the extension information is confirmed, and the synthesis processing is performed only when the total number and the order of carriers match (S238). For example, the processing flow when the total number and the order of carriers do not match corresponds to the manner of the table F-c (fig. 25, fig. 26).

The flow of demodulation and synthesis processing is described above. By executing the processing shown in the flowcharts of fig. 31 to 33 described above, the reception apparatus 20 (fig. 10) having a new function can easily output a desired data stream.

That is, in the receiving apparatus 20 (fig. 10) having the new function, as shown in the table of fig. 11, it is necessary to process and output various types of data streams such as a transport data stream according to the single TS multiplexing scheme, a transport data stream according to the multiple TS multiplexing scheme, and a transport data stream according to the multicarrier transmission scheme. In contrast, in the new function to which the present technique is applied, the (control section 210 of the) demodulation IC202-1 controls the selection of the output data stream based on whether the transmission data stream contains the TSMF header or header information (extension information) of the TSMF header, so that the desired data stream can be more easily output.

In addition, in the new function to which the present technology is applied, since identification information (stream_id, original_network_id) is set in (the control section 210 and the TSMF processing sections 212-1 to 212-4) of the demodulation IC202-1, the TSMF processing sections 212-1 to 212-4 perform TSMF header related processing based on the set identification information, and the control section 210 controls selection of the output data stream based on the set identification information and information related to header information of TSMF headers of the TSMF processing sections 212-1 to 212-4.

Thus, as shown in the data stream output setting process (fig. 32) corresponding to the new function, the software for receiving each program is installed by fewer processing steps (software process), for example, the time required for displaying a new image after switching programs is shortened. More specifically, the data stream output setting process (fig. 32) corresponding to the new function can greatly reduce the processing steps as compared with the data stream output setting process (fig. 8, 9) corresponding to the existing function, and thus the processing time can be shortened.

In addition, for example, in the case of the data stream output setting process (fig. 32) corresponding to the new function, the process of saving the TSMF packet to the memory (S15 of fig. 8, S36 of fig. 9) as in the data stream output setting process (fig. 8, fig. 9) corresponding to the existing function is not necessary, and the memory of the receiving system 200 can be reduced. As a result, the concern about the cost and processing speed of the receiving system 200 can be eliminated.

< 2. Modification >

(other constitution of receiving device)

In the above description, the reception device 20 (fig. 1) is described as a fixed receiver such as a television receiver or a set-top box (STB), but the fixed receiver may include, for example, a recorder, a game machine, a personal computer, a network memory, and the like. The receiving apparatus 20 is not limited to a fixed receiver, and may include, for example, a mobile receiver such as a smart phone, a mobile phone, a tablet computer, an in-vehicle device such as an in-vehicle television, and an electronic device such as a wearable computer such as a head mounted display (HMD: head Mounted Display).

Further, the demodulation IC202-1 (demodulation apparatus) constituting the reception apparatus 20 (fig. 1) can also be understood as a reception apparatus or a demodulation apparatus to which the present technology is applied. In the above description, the number of the plurality of carriers is 2 to 4, but the number of carriers may be 2 or more and any number thereof may be used (for example, 5 or more).

At this time, the reception device 20 (fig. 10) sets the tuners 201-1 to 201-N and the demodulation ICs 202-1 to 202-N corresponding to the number of N (N is an integer of 2 or more) carriers. In addition, one demodulation unit 211 and N TSMF processing units 212-1 to 212-N are provided in the demodulation IC202-1 (fig. 10). The number of tuners 201, demodulation ICs 202, and TSMF processing units 212 is not necessarily the same as the number of carriers, and may be larger than the number of carriers.

(constitution including communication line)

In the transmission system 1 (fig. 1), various servers may be connected to a communication line such as the internet, and the reception device 20 (fig. 1) having a communication function may access the various servers via the communication line such as the internet to perform bidirectional communication, so as to receive various data such as contents and applications.

(others)

In addition, the terms described in the present specification are examples, and are not intended to exclude the use of other terms. For example, in the above description, frames may be replaced with other terms such as packets.

< 3. Composition of computer >

The series of processes described above may be executed by hardware or software. When a series of processes are performed by software, a program constituting the software is installed on a computer. Fig. 34 is a diagram showing an exemplary configuration of hardware of a computer that executes the series of processes described above by a program.

In the computer 1000, CPU (Central Processing Unit) 1001, ROM (Read Only Memory) 1002, RAM (Random Access Memory) 1003 are connected to each other via a bus 1004. An input/output interface 1005 is also connected to the bus 1004. The input/output interface 1005 is connected to an input unit 1006, an output unit 1007, a recording unit 1008, a communication unit 1009, and a drive 1010.

The input unit 1006 includes a keyboard, a mouse, a microphone, and the like. The output section 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 and the like. The drive 1010 drives a removable recording medium 1011 such as a magnetic disk, an optical magnetic disk, or a semiconductor memory.

In the computer 1000 configured as described above, the CPU1001 loads and executes the programs recorded in the ROM1002 and the recording unit 1008 into the RAM1003 via the input/output interface 1005 and the bus 1004, and performs the series of processing described above.

The program executed by the computer 1000 (CPU 1001) may be provided by being recorded in a removable recording medium 1011 as a packaging medium or the like, for example. Further, the program may be provided through a wired or wireless transmission medium such as a local area network, the internet, digital satellite broadcasting, or the like.

In the computer 1000, a program can be installed to the recording section 1008 via the input/output interface 1005 by installing the removable recording medium 1011 on the drive 1010. Further, the program may be received by the communication section 1009 via a wired or wireless transmission medium and installed to the recording section 1008. The program may be previously installed in the ROM1002 or the recording unit 1008.

In this specification, the processing performed by the computer in accordance with the program is not necessarily performed in time in the order described in the flowchart. That is, the processing executed by the computer according to the program also includes processing executed in parallel or individually (for example, parallel processing or processing decided by an object). In addition, the program may be processed by one computer (processor) or may be distributed by a plurality of computers.

The embodiment of the present technology is not limited to the above embodiment, and various modifications may be made without departing from the scope of the present technology.

In addition, the present technology may employ the following constitution.

(1)

A receiving device, which is used for receiving a signal,

the control unit is configured to control selection of an output data stream to be output extracted from a transport data stream transmitted for each of one or a plurality of carriers, based on whether or not a multiframe header is included in the transport data stream or header information of the multiframe header.

(2)

The receiving device according to the above (1), wherein,

the control section selects the output data stream based on extension information contained in the header information of the multi-frame header identified by the set identification information.

(3)

The receiving device according to the above (2), wherein,

the control unit selects a synthesis target data stream as the output data stream when the transport data stream includes the multi-frame header and the header information includes the extension information.

(4)

The receiving apparatus according to the item (2) or (3), wherein,

the control unit selects a non-synthesis target data stream as the output data stream when the transport data stream does not include the multi-frame header or when the header information does not include the extension information.

(5)

The receiving device according to the item (3) or (4), wherein,

the extension information contains synthesis information of the carrier wave,

the control unit selects the synthesis target data stream or the non-synthesis target data stream as the output data stream based on the synthesis information.

(6)

The receiving device according to the item (5), wherein,

the synthesis information includes at least information indicating the total number and order of the carriers.

(7)

The receiving device according to the item (6), wherein,

the control unit selects the synthesis target data stream as the output data stream when the total number and the order of the carriers match.

(8)

The receiving device according to the item (6) or (7), wherein,

the control unit selects the non-synthesis target data stream as the output data stream when the total number and the order of the carriers do not match.

(9)

The receiving apparatus according to any one of the above (3) to (8), wherein,

the extension information contains type information indicating the type of the transport data stream,

the control section selects a conversion target data stream or a non-conversion target data stream as the output data stream based on the type information.

(10)

The receiving device according to the item (9), wherein,

the synthetic object data stream includes the conversion object data stream or the non-conversion object data stream.

(11)

The receiving device according to the item (9) or (10), wherein,

the type information contains information representing variable length packets or fixed length packets.

(12)

The receiving device according to the above (11), wherein,

the control unit selects the conversion target stream for converting the divided variable-length packets into variable-length packets when the type of the transport stream is the type indicating the variable-length packets.

(13)

The receiving device according to the item (11) or (12), wherein,

the control unit selects the non-conversion target data stream when the type of the transport data stream is the fixed-length packet.

(14)

The receiving apparatus according to any one of the above (1) to (13), wherein,

the transport data stream includes a transport data stream conforming to a single TS multiplexing scheme, a transport data stream conforming to a plurality of TS multiplexing schemes, or a transport data stream conforming to a multi-carrier transmission scheme.

(15)

The receiving device according to the above (2), wherein,

the reception device further includes a plurality of processing units provided corresponding to the number of carriers,

the identification information is provided in the control section and the processing section,

the processing section performs the processing relating to the multi-frame header based on the set identification information,

the control unit selects the output data stream based on the set identification information and the header information of the processing unit.

(16)

The receiving device according to the item (15), wherein,

the identification information includes a data flow identifier and a network identifier.

(17)

The receiving device according to the item (15) or (16), wherein,

The receiving device further includes:

a synthesizing unit for synthesizing the synthesis target data stream; and

and a conversion unit for converting the data stream to be converted.

(18)

The receiving apparatus according to any one of (1) to (17), which is configured as a demodulation apparatus.

(19)

The receiving device according to the item (15) or (16), wherein,

when the number of carriers is N, where N is an integer of 2 or more, the reception device is provided with:

1 st demodulation means; and

a 2 nd demodulation means for demodulating a signal of one carrier wave,

the 1 st demodulation device includes:

the control part;

a demodulation unit that demodulates a signal of one carrier wave;

n said processing units;

a synthesizing unit for synthesizing the synthesis target data stream; and

a conversion unit for converting the data stream to be converted,

the 1 st demodulation means is provided with one,

the 2 nd demodulating device is provided with N-1,

the N processing units process the transport data streams of the demodulation unit and the transport data streams of the N-1 nd demodulation devices, respectively.

(20)

A method of reception, in which a plurality of data packets are received,

the reception apparatus performs the following control:

control of selecting an output data stream of an output object extracted from a transmission data stream transmitted by each of one or more carriers is performed based on whether a multiframe header or header information of the multiframe header is contained in the transmission data stream.

Description of the reference numerals

1 … transmission system; 10 … transmitting means; 20 … receiving means; 30 … CATV transmission line; 201. 201-1 to 201-4 … tuner; 202. 202-1 to 202-4 … demodulation IC;203 … system on a chip (SoC); 210 … control section; 211 … demodulation section; 212. 212-1 to 212-4 … TSMF treatment units; 213 … synthesis section; 214 … TLV conversion section; 215 … selector; 216 … selector; 1000 … computer; 1001 and … CPU.

Claims

1. A receiving device, which is used for receiving a signal,

the control unit is configured to control selection of an output data stream to be output extracted from a transport data stream transmitted by each of one or a plurality of carriers based on whether or not a multi-frame header is included in the transport data stream or header information of the multi-frame header,

the control section selects the output data stream based on extension information contained in the header information of the multi-frame header identified by the set identification information,

the receiving device further includes:

a demodulation unit that demodulates a signal of one carrier wave;

a plurality of processing units provided corresponding to the number of carriers;

a synthesizing unit for synthesizing the synthesis target data stream;

a conversion unit that converts a data stream to be converted; and

The selection of the one of the plurality of the switches,

the control unit supplies a control signal corresponding to a result of the determination of the synthesis target data stream to a selector, and the selector outputs an input from the demodulation unit, the processing unit, the synthesis unit, or the conversion unit as an output data stream to be output based on the control signal.

2. The receiving device according to claim 1, wherein,

3. The receiving device according to claim 1, wherein,

4. The receiving apparatus according to claim 2, wherein,

the extension information contains synthesis information of the carrier wave,

5. The receiving device according to claim 4, wherein,

6. The receiving device according to claim 5, wherein,

7. The receiving device according to claim 5, wherein,

8. The receiving apparatus according to claim 2, wherein,

9. The receiving apparatus according to claim 8, wherein,

10. The receiving apparatus according to claim 8, wherein,

11. The receiving device according to claim 10, wherein,

12. The receiving device according to claim 10, wherein,

13. The receiving device according to claim 1, wherein,

14. The receiving device according to claim 1, wherein,

15. The receiving device of claim 14, wherein,

16. The receiving device according to claim 1, wherein,

the receiving device is configured as a demodulation device.

17. The receiving device of claim 14, wherein,

1 st demodulation means; and

a 2 nd demodulation means for demodulating a signal of one carrier wave,

the 1 st demodulation device includes:

the control part;

the demodulation unit;

n said processing units;

the synthesis part; and

the switching section is configured to switch the switching section,

the 1 st demodulation means is provided with one,

the 2 nd demodulating device is provided with N-1,

18. A method of reception, in which a plurality of data packets are received,

the reception apparatus performs the following control:

based on whether a multi-frame header, or header information of the multi-frame header, is included in a transmission data stream transmitted by each of one or more carriers, control of selecting an output data stream of an output object extracted from the transmission data stream is performed,

The receiving device further includes:

a demodulation unit that demodulates a signal of one carrier wave;

a synthesizing unit for synthesizing the synthesis target data stream;

a conversion unit that converts a data stream to be converted; and

the selection of the one of the plurality of the switches,

the receiving method further comprises the following steps:

selecting the output data stream based on extension information contained in the header information of the multi-frame header identified with the set identification information,

and a control signal corresponding to a result of the determination of the synthesis target data stream is supplied to a selector which outputs an input from the demodulation unit, the processing unit, the synthesis unit, or the conversion unit as an output data stream to be output based on the control signal.