Transmission device, transmission method, reception device, and reception method

Abstract

The present disclosure relates to a transmission device, a transmission method, a reception device, and a reception method that enable appropriate selection of a broadcast service. Provided is a transmission device that comprises: a generation unit that generates configuration information necessary for selecting an Lch level; and a transmission unit that transmits a broadcast signal including the generated configuration information. According to the present disclosure, the present invention can be, for example, applied to broadcasting, such as a TLV multiplexing method or TMCC, that uses OFDM frames.

Description

Transmitting device, transmission method, receiving device, and receiving method

[0001] The present disclosure relates to a transmitting device, a transmission method, a receiving device, and a receiving method, and particularly to a transmitting device, a transmission method, a receiving device, and a receiving method that enable appropriate channel selection of broadcast services.

[0002] In Japan, studies have been conducted on the enhancement of terrestrial digital television broadcasting towards the next generation, and various technical systems have been studied. For example, the introduction of a pilot signal called the Lch signal, which is assigned to specific subcarriers within a segment for wideband frequency synchronization and noise estimation, has been studied, and the Lch signal can also be used for data transmission (see, for example, Patent Document 1).

[0003] Japanese Patent Application Laid-Open No. 2024-106985

[0004] Although the Lch signal can be transmitted in multiple layers, since the method for selecting a layer is not defined, there is a risk that broadcast services cannot be appropriately channel-selected. Therefore, a proposal for a technique for appropriately channel-selecting broadcast services has been demanded.

[0005] The present disclosure has been made in view of such a situation and enables appropriate channel selection of broadcast services.

[0006] A transmitting device according to one aspect of the present disclosure is a transmitting device including a generation unit that generates configuration information necessary for channel selection of the Lch layer, and a transmission unit that transmits a broadcast signal including the generated configuration information.

[0007] A transmission method according to one aspect of the present disclosure is a transmission method including a transmitting device generating configuration information necessary for channel selection of the Lch layer, and transmitting a broadcast signal including the generated configuration information.

[0008] In the transmitting device and the transmission method according to one aspect of the present disclosure, configuration information necessary for channel selection of the Lch layer is generated, and a broadcast signal including the generated configuration information is transmitted.

[0009] One aspect of the present disclosure is a receiving device comprising a receiving unit that receives a broadcast signal containing configuration information necessary for tuning to the Lch hierarchy, and a control unit that controls the receiving unit, and which tunes to the Lch hierarchy based on the configuration information contained in the broadcast signal.

[0010] One aspect of the present disclosure is a receiving method which includes a receiving device receiving a broadcast signal containing configuration information necessary for tuning to an Lch hierarchy, and tuning to an Lch hierarchy based on the configuration information contained in the broadcast signal.

[0011] In a receiving device and receiving method according to one aspect of this disclosure, a broadcast signal containing configuration information necessary for selecting an Lch hierarchy is received, and an Lch hierarchy is selected based on the configuration information contained in the broadcast signal.

[0012] Furthermore, the transmitting device and receiving device of one aspect of this disclosure may be independent devices or internal blocks constituting a single device.

[0013] This figure shows an example configuration of one embodiment of a transmission system to which this disclosure is applied. This figure shows an example of the transmitter configuration. This figure shows an example of the group_id information list. This figure shows an example of the physical layer frame configuration. This figure shows the group identifier values ​​for each layer. This figure shows an example of the Lch frame configuration. This figure illustrates a transmission method for Lch tuning configuration information. This figure shows an example of the receiver configuration for receiving a transmission signal transmitted from a transmitter. This figure shows an example of transmission control auxiliary information. This figure shows an example of the group_id information list. This is a flowchart illustrating the operation of a receiver. This figure shows an example of transmission control auxiliary information. This figure shows an example of the group_id information list. This is a flowchart illustrating the operation of a receiver. This figure shows an example of transmission control auxiliary information. This is a flowchart illustrating the operation of a receiver. This figure shows an example of transmission control auxiliary information. This is a flowchart illustrating the operation of a receiver. This figure shows an example of Lch TLV. This figure shows an example of the group_id information list is a flowchart illustrating the operation of a receiver. This figure shows an example of Lch TLV. This is a flowchart illustrating the operation of a receiver. This is a diagram showing an example of an Lch TLV. This is a flowchart explaining the operation of the receiver. This is a diagram showing an example of a broadcast service configuration information descriptor. This is a diagram showing an example of a TLV-NIT configuration. This is a flowchart explaining the operation of the microcontroller. This is a diagram showing a first example of transmission control auxiliary information. This is a diagram showing a second example of transmission control auxiliary information. This is a diagram showing a first example of an Lch TLV. This is a diagram showing a second example of an Lch TLV. This is a diagram showing a first example of a broadcast service configuration information descriptor. This is a diagram showing a second example of a broadcast service configuration information descriptor. This is a diagram explaining an example of operation using tlv_repeat and tlv_update. This is a diagram explaining an example of operation using tlv_repeat and tlv_update. This is a diagram showing an example of a computer hardware configuration.

[0014] <System Configuration> Figure 1 is a diagram showing an example configuration of one embodiment of a transmission system to which the present disclosure is applied.

[0015] Figure 1 is a block diagram showing an example configuration of one embodiment of a transmission system to which the present disclosure is applied. In Figure 1, the transmission system consists of a transmitting device 11 and a receiving device 12. In the transmission system of Figure 1, a broadcasting system such as the next-generation ISDB-T (Integrated Services Digital Broadcasting - Terrestrial) system (hereinafter also referred to as the advanced terrestrial broadcasting system) can be adopted as the transmission method. In the advanced terrestrial broadcasting system, broadcasting services are provided by hierarchical transmission using a segment structure in which one channel is divided into segments, similar to the current ISDB-T system, and it is possible to partially receive some of the segments.

[0016] The transmitting device 11 is a device that transmits broadcast content, such as broadcast programs produced by broadcasters, as a transmission signal (broadcast signal). The transmitting device 11 performs the necessary processing on control information and broadcast content data, and transmits the resulting transmission signal from a transmitting antenna installed at the transmission station.

[0017] The receiving device 12 is a device capable of receiving transmission signals, such as a fixed receiver like a television set or a mobile receiver like a smartphone. The receiving device 12 receives the transmission signal sent from the transmitting device 11 via an antenna. The receiving device 12 processes the control information and data obtained from the received transmission signal as needed to output video and audio of broadcast content such as broadcast programs.

[0018] Figure 2 is a block diagram showing an example configuration of the transmitter included in the transmitting device 11 of Figure 1. In Figure 2, the transmitter 21 is configured as an OFDM (Orthogonal Frequency Division Multiplexing) modulation unit. The transmitter 21 has an input I / F 31, a primary modulation unit 32, a level adjustment unit 33, a hierarchical synthesis unit 34, a band division unit 35, a time IL unit 36, a frequency IL unit 37, a band synthesis unit 38, a pilot generation unit 39, a differential reference addition unit 40, a DBPSK modulation unit 41, an OFDM frame configuration unit 42, an IFFT unit 43, and a GI addition unit 44.

[0019] As shown in Figure 2, the transmitter 21 receives data (hierarchical frames) and Lch frames, which constitute frames for each of the single or multiple hierarchical levels, as input signals from the input I / F 31. Each hierarchical frame is converted into an FEC (Forward Error Correction) block that stores error correction codes in the primary modulation unit 32, and energy spreading, BCH coding, LDPC coding, bit interleaving, and mapping are performed. The level adjustment unit 33 adjusts the level of the carrier symbol for each hierarchical level.

[0020] In the hierarchical synthesis unit 34, carrier symbols of each hierarchical level are hierarchically synthesized, and data segments are constructed by bandwidth division by the bandwidth division unit 35, time interleaving by the time IL unit 36, frequency interleaving by the frequency IL unit 37, and bandwidth synthesis by the bandwidth synthesis unit 38. The pilot generation unit 39 generates a pilot signal. For each subframe of an Lch frame, a differential reference bit is added to the beginning in the differential reference addition unit 40, and then DBPSK modulation is performed in the DBPSK modulation unit 41 to generate the Lch signal. The Lch signal is a pilot signal for broadband frequency synchronization and noise estimation, and can also be used for data transmission.

[0021] In the OFDM frame configuration unit 42, a pilot signal and an Lch signal are added to the data segment to form an OFDM frame. The signal after OFDM frame configuration is subjected to OFDM modulation by IFFT (Inverse Fast Fourier Transform) in the IFFT unit 43, a GI (Guard interval) is added in the GI addition unit 44, and the signal is output as an IF (Intermediate Frequency) signal.

[0022] In the advanced terrestrial broadcasting system, a group_id is defined to identify the same broadcasting company when selecting a channel. The group_id is linked to each level, and by specifying the group_id, it becomes possible to select a broadcasting service. Figure 3 shows an example of a list of group_id information included in the transmission control information. TMCC (Transmission and Multiplexing Configuration Control) is used as the transmission control information.

[0023] As shown in Figure 3, the group_id information list is structured within a loop corresponding to the number of layers, number_of_layers, which indicates the number of sublayers; sp_pattern, which indicates the SP pattern; sp_coding, which indicates the SP coding scheme; start_boundary_pilot, which indicates the presence or absence of a boundary pilot at the first symbol of a subframe; end_boundary_pilot, which indicates the presence or absence of a boundary pilot at the last symbol of a subframe; sp_level, which indicates the SP level; time_interleave, which indicates the time interleave length; and group_id, which indicates the group identifier. The group_id identifies the group of broadcasters providing services within the target channel.

[0024] Figures 4 and 5 illustrate an example of the group identifier configuration. Figure 4 shows an example of the physical layer frame configuration. Figure 5 shows the group identifier values ​​for each layer. In Figure 4, the frame configuration is shown with the horizontal direction representing time and the vertical direction representing frequency. One broadcaster (program 1) is composed of ultra-high tolerance audio (1Aa), mobile reception (1Ab), and fixed reception (1B). Layer A is composed of two sub-layers, which can make the transmission parameters of 1Aa more tolerant. Layers A and B are assigned group_id = 0, and are identified as the same broadcaster when selecting a channel. In this example, by using group identifiers, a service is provided that allows continuous audio reception even in reception environments with a low C / N ratio by demodulating the ultra-high tolerance audio layer.

[0025] On the other hand, Lch signals can be transmitted in multiple layers, and can have up to seven layers, but since there is no specified method for the receiving end to select the layer, there is a risk that broadcast services may not be selected properly. Figure 6 shows an example of the structure of an Lch frame. As shown in Figure 6, when lch_valid is 1, the Lch contains valid data, and within a loop corresponding to the number of layers of the Lch indicated by lch_number_of_layer, the following are placed: number_of_segments indicating the number of segments in each layer, fec_type indicating the error correction method, fec_npages indicating the number of FEC pages, fec_nrepeat indicating the number of iterations of the FEC block, fec_block_pointer indicating the FEC block pointer, and fec_block_repeat_pointer indicating the FEC block iteration count pointer. The FEC block pointer indicates the number of bits up to the beginning of the FEC block.

[0026] <Summary of this disclosure> In this disclosure, the transmitting device 11 generates and transmits (transmits) configuration information necessary for tuning at the Lch layer (hereinafter also referred to as Lch tuning configuration information), so that the receiving device 12 can appropriately tune to a broadcast service using the said Lch tuning configuration information. The Lch tuning configuration information can be included in the transmission control auxiliary information of the physical layer transmission control information (TMCC), the signal of the TLV packet transmitted at the Lch layer (a specific layer of Lch) (hereinafter also referred to as Lch TLV), or the control information of the transport layer (the broadcast service configuration information descriptor of TLV-NIT).

[0027] Figure 7 illustrates the transmission method for Lch tuning configuration information. Figure 7 shows the configuration of the frame configuration unit in the transmitter 21, which includes an input I / F 51, an Lch separation unit 52, and a time-division multiplexed frame configuration unit 53. As shown in Figure 7, the physical layer frame (OFDM frame) of the advanced terrestrial broadcasting system consists of a frame synchronization signal section, a TMCC section, one or more subframe sections, and an extended section. The output signals from the transmission path coding unit for each signal section input to the input I / F 51 are time-division multiplexed by the time-division multiplexed frame configuration unit 53. The Lch signal is separated by the Lch separation unit 52 and can be transmitted across the entire frame excluding the frame synchronization signal and the TMCC section. The layer to which the Lch signal is transmitted is the Lch layer.

[0028] Here, as shown in Figure 7, in the method of transmitting Lch tuning configuration information by placing it in the transmission control auxiliary information of the transmission control information (TMCC) (hereinafter also referred to as the first method), the Lch tuning configuration information is placed in the transmission control auxiliary information of the TMCC 61. In the method of transmitting Lch tuning configuration information by placing it in the Lch TLV (hereinafter also referred to as the second method), the Lch tuning configuration information is placed in the TLV signal 62 which includes a TLV packet storing Lch data. In the method of transmitting Lch tuning configuration information by placing it in the transport layer control information (TLV-NIT) (hereinafter also referred to as the third method), the Lch tuning configuration information is placed in the TLV signal 63 which includes a TLV packet storing control information and data.

[0029] In the advanced terrestrial broadcasting system, the adoption of the TLV (Type Length Value) multiplexing method and the MMT (MPEG Media Transport) method is being considered, and MMT-SI (Signaling Information) and TLV-SI are planned to be used as control information for transmission. MMT-SI is control information related to the structure of broadcast content, etc. MMT-SI is transmitted in MMTP (MMT Protocol) packets. Broadcast content data (video data, audio data) is packaged in MMTP packets and transmitted in IP packets. IP packets are transmitted in the form of TLV packets on the broadcast transmission path. TLV-SI is control information related to the multiplexing of IP packets. TLV-SI is transmitted in TLV packets.

[0030] The following describes the details of the transmission method for Lch tuning configuration information, starting with the first to fourth embodiments corresponding to the first method, followed by the fifth to tenth embodiments corresponding to the second method, and finally the eleventh embodiment corresponding to the third method.

[0031] <<First Embodiment (First Method: First Example)>> Figure 8 shows an example of the configuration of a receiving device 12 that receives a transmission signal transmitted from a transmitting device 11. As shown in Figure 8, the transmitting device 11 has a transmitter 21 and a generation unit 22. The generation unit 22 generates control information such as Lch tuning configuration information. The transmitter 21 has the configuration shown in Figure 2 above. The transmitter 21 transmits a transmission signal including the Lch tuning configuration information generated by the generation unit 22. In the first method, the Lch tuning configuration information is placed in the transmission control auxiliary information of the TMCC. The generation unit 22 may be provided inside the transmitter 21.

[0032] The receiving device 12 includes a receiver 71 and a microcontroller 72. The receiver 71 is composed of a demodulation LSI. The receiver 71 receives the transmission signal transmitted from the transmitter 21 and performs demodulation processing. The microcontroller 72 is composed of a microcontroller including a CPU (Central Processing Unit). The microcontroller 72 controls each part of the receiving device 12, including the receiver 71.

[0033] Figure 9 shows an example of transmission control auxiliary information. Transmission control auxiliary information can be placed in the Auxiliary_data of the transmission control information (TMCC). The transmission control auxiliary information 81 in Figure 9 includes information on the correspondence between the Lch hierarchy and group_id as Lch station selection configuration information.

[0034] As shown in Figure 9, the transmission control auxiliary information 81 contains num_of_lch_group, and within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, the following are placed: group_id indicating the group identifier (group ID), lch_layer_index indicating the Lch hierarchy, lch_subframe_index indicating the Lch subgroup number, tlv_repeat indicating whether or not there is repeated retransmission, and tlv_update indicating whether or not there is an update. The correspondence between the Lch hierarchy and group_id is shown by group_id, lch_layer_index, and lch_subframe_index.

[0035] Figure 10 shows an example of a group_id information list. The group_id information list 82 in Figure 10 is structured similarly to the group_id information list in Figure 3, and includes group_ids according to the hierarchy. The group_id information list 82 is included in the transmission control information (TMCC).

[0036] Figure 11 is a flowchart illustrating the operation of the receiver 71. As shown in Figure 11, the receiver 71 obtains a list of group_id information (Figure 10) and the correspondence between the Lch hierarchy and group_id (Figure 9) from the transmitted signal (S11). The receiver 71 passes the obtained list of group_id information (Figure 10) to the microcontroller 72 (S12).

[0037] The microcontroller 72 can specify a group_id based on the list of group_id information supplied by the receiver 71. When the microcontroller 72 specifies a group_id (S13: Yes), the receiver 71 selects the Lch hierarchy to be selected based on the correspondence between the Lch hierarchy and the group_id (Figure 9) (S14).

[0038] As described above, by having the transmitter 21 place Lch tuning configuration information (information linking Lch hierarchy and group_id) in the transmission control auxiliary information of the transmission control information (TMCC), the receiver 71 can use the Lch tuning configuration information to select the Lch hierarchy corresponding to the group_id specified by the microcontroller 72.

[0039] <<Second Embodiment (First Method: Second Example)>> In the second embodiment, the transmitting device 11 and the receiving device 12 are configured in the same way as shown in Figure 8, and the transmitted signal includes the transmission control auxiliary information shown in Figure 12 and the group_id information list shown in Figure 13.

[0040] Figure 12 shows an example of transmission control auxiliary information. As shown in Figure 12, the transmission control auxiliary information 91 contains num_of_lch_group, and group_id, lch_layer_index, lch_subframe_index, tlv_repeat, and tlv_update are placed within a loop corresponding to the number of Lch groups indicated by num_of_lch_group. The correspondence between the Lch hierarchy and group_id is shown by group_id, lch_layer_index, and lch_subframe_index.

[0041] Figure 13 shows an example of a group_id information list. As shown in Figure 13, the group_id information list 92 is structured similarly to the group_id information list in Figure 3, and includes group_ids according to the hierarchy.

[0042] Figure 14 is a flowchart illustrating the operation of the receiver 71. As shown in Figure 14, the receiver 71 obtains a list of group_id information (Figure 13) and the correspondence between Lch hierarchy and group_id (Figure 12) from the transmitted signal (S21). The receiver 71 passes the obtained list of group_id information and the correspondence between Lch hierarchy and group_id to the microcontroller 72 (S22).

[0043] The microcomputer 72 can specify the Lch layer based on the list of group_id information supplied from the receiver 71 and the correspondence between the Lch layer and the group_id. When the Lch layer is specified from the microcomputer 72 (S23: Yes), the receiver 71 selects the specified Lch layer (S24).

[0044] As described above, by arranging the Lch channel selection configuration information (information associating the Lch layer and the group_id) in the transmission control auxiliary information of the transmission control information (TMCC) in the transmitter 21, the microcomputer 72 can specify the Lch layer using the Lch channel selection configuration information, and the receiver 71 can specify the Lch layer specified from the microcomputer 72.

[0045] <<Third Embodiment (First Method: Third Example)>> In the third embodiment, the transmission device 11 and the reception device 12 are configured in the same manner as the configuration shown in FIG. 8, and the transmission signal includes the transmission control auxiliary information shown in FIG. 15.

[0046] FIG. 15 is a diagram showing an example of the transmission control auxiliary information. The transmission control auxiliary information 101 in FIG. 15 includes, as the Lch channel selection configuration information, information regarding the lch_group_identification and the correspondence between the Lch layer and the lch_group_id.

[0047] As shown in FIG. 15, the transmission control auxiliary information 101 has the lch_group_identification and num_of_lch_group arranged, and within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, the lch_group_id, lch_layer_index, lch_subframe_index, tlv_repeat, and tlv_update are arranged. The lch_group_identification indicates the Lch group identification number, and an arbitrary identification number can be defined, such as for each region, etc. Note that it does not have to be the same as the group_id. The lch_group_id is the group ID for the Lch. The correspondence between the Lch layer and the lch_group_id is indicated by the lch_group_id, the lch_layer_index, and the lch_subframe_index.

[0048] FIG. 16 is a flowchart for explaining the operation of the receiver 71. As shown in FIG. 16, the receiver 71 obtains the lch_group_identification and the correspondence relationship between the Lch layer and the lch_group_id (FIG. 15) from the transmission signal (S31). The receiver 71 passes the information regarding the obtained lch_group_identification to the microcomputer 72 (S32).

[0049] Based on the information regarding the lch_group_identification supplied from the receiver 71, the microcomputer 72 can specify the lch_group_id. When the lch_group_id is specified from the microcomputer 72 (S33: Yes), the receiver 71 specifies and selects the Lch layer to be selected from the correspondence relationship between the Lch layer and the lch_group_id (S34).

[0050] As described above, by the transmitter 21 arranging the Lch selection configuration information (information regarding the association of the group defined by the Lch layer and the lch_group_identification) in the transmission control auxiliary information of the transmission control information (TMCC), the receiver 71 can use the Lch selection configuration information to select the Lch layer corresponding to the lch_group_id specified from the microcomputer 72.

[0051] <<Fourth Embodiment (First Method: Fourth Example)>> In the fourth embodiment, the transmission device 11 and the reception device 12 are configured in the same manner as the configuration shown in FIG. 8, and the transmission signal includes the transmission control auxiliary information shown in FIG. 17.

[0052] Figure 17 shows an example of transmission control auxiliary information. As shown in Figure 17, the transmission control auxiliary information 111 contains lch_group_identification and num_of_lch_group, and within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, lch_group_id, lch_layer_index, lch_subframe_index, tlv_repeat, and tlv_update are placed. The transmission control auxiliary information 111 in Figure 17 includes lch_group_identification and information regarding the correspondence between the Lch hierarchy and lch_group_id.

[0053] Figure 18 is a flowchart illustrating the operation of the receiver 71. As shown in Figure 18, the receiver 71 obtains the lch_group_identification and the correspondence between the Lch hierarchy and lch_group_id (Figure 17) from the transmitted signal (S41). The receiver 71 passes the obtained lch_group_identification information and the correspondence between the Lch hierarchy and lch_group_id to the microcontroller 72 (S42).

[0054] The microcontroller 72 can specify the Lch hierarchy based on the lch_group_identification information supplied from the receiver 71 and the correspondence between the Lch hierarchy and lch_group_id. When the receiver 71 receives a specification for the Lch hierarchy from the microcontroller 72 (S43: Yes), it selects the specified Lch hierarchy (S44).

[0055] As described above, the transmitter 21 places Lch tuning configuration information (information regarding the linking of Lch hierarchy and groups defined by lch_group_identification) in the transmission control auxiliary information of the transmission control information (TMCC), so that the microcontroller 72 can specify the Lch hierarchy using the Lch tuning configuration information, and the receiver 71 can select the Lch hierarchy specified by the microcontroller 72.

[0056] <<Fifth Embodiment (Second Method: First Example)>> In the fifth embodiment, the transmitting device 11 and the receiving device 12 are configured in the same way as shown in Figure 8, and the transmitted signal includes the Lch TLV shown in Figure 19 and the group_id information list shown in Figure 20. The Lch TLV is a signal of a TLV packet (TLV signal) transmitted at a specific layer of the Lch, and transmits Lch tuning configuration information. That is, in the second method, the Lch tuning configuration information is placed in the Lch TLV (TLV signal).

[0057] Figure 19 shows an example of an Lch TLV. As shown in Figure 19, the Lch TLV 121 contains type, length, and num_of_lch_group. Within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, the following are placed: group_id (group ID), lch_layer_index (Lch hierarchy), lch_subframe_index (Lch subframe number), tlv_repeat (whether repeated retransmission is performed), and tlv_update (whether an update is performed). The correspondence between the Lch hierarchy and group_id is shown by group_id, lch_layer_index, and lch_subframe_index.

[0058] Figure 20 shows an example of a group_id information list. The group_id information list 122 in Figure 20 is structured similarly to the group_id information list in Figure 3, and includes group_ids according to the hierarchy. The group_id information list 122 is included in the transmission control information (TMCC).

[0059] Figure 21 is a flowchart illustrating the operation of the receiver 71. As shown in Figure 21, the receiver 71 obtains a list of group_id information (Figure 20) from the transmitted signal and selects the Lch layer (a specific layer of the Lch) that contains the Lch tuning configuration information (Lch TLV) (S51). The information for selecting the specific layer of the Lch may, for example, be pre-recorded in the memory built into the receiver 71, or it may be transmitted as control information from the transmitter 21. This allows the receiver 71 to obtain the Lch TLV (Figure 19) transmitted at the specific layer of the Lch. The receiver 71 passes the obtained list of group_id information and the Lch TLV to the microcontroller 72 (S52).

[0060] The microcontroller 72 can specify the Lch hierarchy based on the group_id information list and Lch TLV supplied from the receiver 71. In other words, in this example, the microcontroller 72 interprets the Lch TLV. When the receiver 71 receives a specification for the Lch hierarchy from the microcontroller 72 (S53: Yes), it selects the specified Lch hierarchy (S54).

[0061] As described above, the transmitter 21 places Lch tuning configuration information (information linking the Lch hierarchy and group_id) in the Lch TLV transmitted at a specific Lch hierarchy, so that when the Lch hierarchy is specified by the microcontroller 72, the receiver 71 can tune to the specified Lch hierarchy. Here, the specific Lch hierarchy is used for transmitting configuration information, and the transmitted Lch TLV is interpreted by the microcontroller 72.

[0062] <<Sixth Embodiment (Second Method: Second Example)>> In the sixth embodiment, the transmitting device 11 and the receiving device 12 are configured in the same way as shown in Figure 8, and the transmitted signal includes the Lch TLV shown in Figure 22 and the group_id information list shown in Figure 23.

[0063] Figure 22 shows an example of an Lch TLV. As shown in Figure 22, the Lch TLV 131 contains type, length, and num_of_lch_group, and within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, group_id, lch_layer_index, lch_subframe_index, tlv_repeat, and tlv_update are placed. The correspondence between the Lch hierarchy and group_id is shown by group_id, lch_layer_index, and lch_subframe_index.

[0064] Figure 23 shows an example of a group_id information list. As shown in Figure 23, the group_id information list 132 is structured similarly to the group_id information list in Figure 3, and includes group_ids according to the hierarchy.

[0065] Figure 24 is a flowchart illustrating the operation of the receiver 71. As shown in Figure 24, the receiver 71 obtains a list of group_id information (Figure 23) from the transmitted signal, selects an Lch hierarchy (a specific Lch hierarchy) that contains Lch tuning configuration information (Lch TLV), and obtains the correspondence between the Lch hierarchy and the group_id (Figure 22) (S61). The receiver 71 passes the obtained list of group_id information and the correspondence between the Lch hierarchy and the group_id to the microcontroller 72 (S62). In other words, in this example, the receiver 71 interprets the Lch TLV.

[0066] The microcontroller 72 can specify an Lch hierarchy based on the list of group_id information supplied from the receiver 71 and the correspondence between Lch hierarchy and group_id. When the receiver 71 receives a specification for an Lch hierarchy from the microcontroller 72 (S63: Yes), it selects the specified Lch hierarchy (S64).

[0067] As described above, the transmitter 21 places Lch tuning configuration information (information linking the Lch hierarchy and group_id) in the Lch TLV transmitted at a specific Lch hierarchy, so that when the Lch hierarchy is specified by the microcontroller 72, the receiver 71 can tune to the specified Lch hierarchy. Here, the receiver 71 interprets the transmitted Lch TLV by using a specific Lch hierarchy for configuration information transmission.

[0068] <<Seventh Embodiment (Second Method: Third Example)>> In the seventh embodiment, the transmitting device 11 and the receiving device 12 are configured in the same way as shown in Figure 8, and the transmitted signal includes the Lch TLV shown in Figure 25 and the group_id information list shown in Figure 26.

[0069] Figure 25 shows an example of an Lch TLV. As shown in Figure 25, Lch TLV 141 contains type, length, and num_of_lch_group, and within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, group_id, lch_layer_index, lch_subframe_index, tlv_repeat, and tlv_update are placed. The correspondence between the Lch hierarchy and group_id is shown by group_id, lch_layer_index, and lch_subframe_index.

[0070] Figure 26 shows an example of a group_id information list. As shown in Figure 26, the group_id information list 142 is structured similarly to the group_id information list in Figure 3, and includes group_ids according to the hierarchy.

[0071] Figure 27 is a flowchart illustrating the operation of the receiver 71. As shown in Figure 27, the receiver 71 obtains a list of group_id information (Figure 26) from the transmitted signal, selects an Lch hierarchy (a specific Lch hierarchy) that contains Lch tuning configuration information (Lch TLV), and obtains the correspondence between the Lch hierarchy and the group_id (Figure 25) (S71). The receiver 71 passes the obtained list of group_id information to the microcontroller 72 (S72).

[0072] The microcontroller 72 can specify a group_id based on the list of group_id information supplied by the receiver 71. When the microcontroller 72 specifies a group_id (S73: Yes), the receiver 71 selects the Lch hierarchy to be tuned based on the correspondence between the Lch hierarchy and the group_id (S74). In other words, in this example, the receiver 71 is interpreting the Lch TLV.

[0073] As described above, the transmitter 21 can specify the Lch tier to be selected by the receiver 71 by placing Lch tuning configuration information (information linking the Lch tier and group_id) in the Lch TLV transmitted at a specific Lch tier. Here, the receiver 71 interprets the transmitted Lch TLV by using a specific Lch tier for transmitting configuration information.

[0074] <<Eighth Embodiment (Second Method: Fourth Example)>> In the eighth embodiment, the transmitting device 11 and the receiving device 12 are configured in the same way as shown in Figure 8, and the transmitted signal includes the Lch TLV shown in Figure 28.

[0075] Figure 28 shows an example of an Lch TLV. As shown in Figure 28, Lch TLV 151 contains type, length, lch_group_identification, and num_of_lch_group. Within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, lch_group_id, lch_layer_index, lch_subframe_index, tlv_repeat, and tlv_update are placed. lch_group_identification indicates the Lch group identification number, and any identification number can be defined, for example, by region. lch_group_id is the group ID for Lch. The correspondence between the Lch hierarchy and lch_group_id is shown by lch_group_id, lch_layer_index, and lch_subframe_index.

[0076] Figure 29 is a flowchart illustrating the operation of the receiver 71. As shown in Figure 29, the receiver 71 selects the Lch hierarchy (a specific hierarchy of the Lch) that contains the Lch tuning configuration information (Lch TLV) (S81). As a result, the receiver 71 obtains the Lch TLV (Figure 28) and passes the obtained Lch TLV, along with the list of group_id information obtained from TMCC, to the microcontroller 72 (S82).

[0077] The microcontroller 72 can specify the Lch hierarchy based on the group_id information list and Lch TLV supplied by the receiver 71. In other words, in this example, the microcontroller 72 interprets the Lch TLV. When the receiver 71 receives a specification for the Lch hierarchy from the microcontroller 72 (S83: Yes), it selects the specified Lch hierarchy (S84).

[0078] As described above, the transmitter 21 places Lch tuning configuration information (information relating the Lch hierarchy to the group defined by lch_group_identification) in the Lch TLV transmitted at a specific Lch hierarchy, allowing the receiver 71 to select the Lch hierarchy specified by the microcontroller 72. Here, the specific Lch hierarchy is used for transmitting configuration information, and the transmitted Lch TLV is interpreted by the microcontroller 72.

[0079] <<Ninth Embodiment (Second Method: Fifth Example)>> In the ninth embodiment, the transmitting device 11 and the receiving device 12 are configured in the same way as shown in Figure 8, and the transmitted signal includes the Lch TLV shown in Figure 30.

[0080] Figure 30 shows an example of an Lch TLV. As shown in Figure 30, Lch TLV 161 contains type, length, lch_group_identification, and num_of_lch_group. Within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, lch_group_id, lch_layer_index, lch_subframe_index, tlv_repeat, and tlv_update are placed. lch_group_identification indicates the Lch group identification number. lch_group_id is the group ID for Lch. The correspondence between the Lch hierarchy and lch_group_id is shown by lch_group_id, lch_layer_index, and lch_subframe_index.

[0081] Figure 31 is a flowchart illustrating the operation of the receiver 71. As shown in Figure 31, the receiver 71 selects the Lch hierarchy (a specific Lch hierarchy) that contains the Lch tuning configuration information (Lch TLV), and obtains the lch_group_identification and the correspondence between the Lch hierarchy and lch_group_id (S91). The receiver 71 passes the obtained lch_group_identification information and the correspondence between the Lch hierarchy and lch_group_id to the microcontroller 72 (S92). In other words, in this example, the receiver 71 interprets the Lch TLV.

[0082] The microcontroller 72 can specify the Lch hierarchy based on the lch_group_identification information supplied from the receiver 71 and the correspondence between the Lch hierarchy and lch_group_id. When the receiver 71 receives a specification for the Lch hierarchy from the microcontroller 72 (S93: Yes), it selects the specified Lch hierarchy (S94).

[0083] As described above, the transmitter 21 places Lch tuning configuration information (information regarding the association between Lch layers and groups defined by lch_group_identification) in the Lch TLV transmitted at a specific layer of the Lch, allowing the receiver 71 to select the Lch layer specified by the microcontroller 72. Here, the receiver 71 interprets the transmitted Lch TLV by using a specific layer of the Lch for transmitting configuration information.

[0084] <<Tenth Embodiment (Second Method: Sixth Example)>> In the tenth embodiment, the transmitting device 11 and the receiving device 12 are configured in the same way as shown in Figure 8, and the transmitted signal includes the Lch TLV shown in Figure 32.

[0085] Figure 32 shows an example of an Lch TLV. As shown in Figure 32, Lch TLV 171 contains type, length, lch_group_identification, and num_of_lch_group. Within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, lch_group_id, lch_layer_index, lch_subframe_index, tlv_repeat, and tlv_update are placed. lch_group_identification indicates the Lch group identification number. lch_group_id is the group ID for Lch. The correspondence between the Lch hierarchy and lch_group_id is shown by lch_group_id, lch_layer_index, and lch_subframe_index.

[0086] Figure 33 is a flowchart illustrating the operation of the receiver 71. As shown in Figure 33, the receiver 71 selects the Lch hierarchy (a specific Lch hierarchy) that contains the Lch tuning configuration information (Lch TLV), and obtains the lch_group_identification and the correspondence between the Lch hierarchy and lch_group_id (S101). The receiver 71 passes the list of group_id information obtained from TMCC to the microcontroller 72 (S102).

[0087] The microcontroller 72 can specify a group_id based on the list of group_id information supplied by the receiver 71. When the microcontroller 72 specifies a group_id (S103: Yes), the receiver 71 selects the Lch hierarchy to be tuned based on the correspondence between the Lch hierarchy and the lch_group_id (S104). In other words, in this example, the receiver 71 is interpreting the Lch TLV.

[0088] As described above, the transmitter 21 places Lch tuning configuration information (information regarding the association between Lch layers and groups defined by lch_group_identification) in the Lch TLV transmitted at a specific layer of the Lch, allowing the receiver 71 to specify the Lch layer to tune in. Here, the receiver 71 interprets the transmitted Lch TLV by using a specific layer of the Lch for transmitting configuration information.

[0089] <<Eleventh Embodiment (Third Method: First Example)>> In the eleventh embodiment, the transmitting device 11 and the receiving device 12 are configured in the same way as shown in Figure 8, and the transmitted signal includes the broadcast service configuration information descriptor shown in Figure 34. In the third method, the Lch tuning configuration information is placed in the broadcast service configuration information descriptor included in TLV-NIT.

[0090] Figure 34 shows an example of a broadcast service configuration information descriptor. As shown in Figure 34, the broadcast service configuration information descriptor 181 contains descriptor_tag, descriptor_length, version, and number_of_Lch_service. Within a loop corresponding to the number of services indicated by number_of_Lch_service, Lch_TLV_stream_id, which indicates the TLV stream ID of Lch, and Lch_service_id, which indicates the service ID of Lch, are placed. This descriptor shows the correspondence between Lch and Lch_TLV_stream_id and Lch_service_id. Note that Lch_TLV_stream_id is not mandatory, and only Lch_service_id may be placed.

[0091] As shown in Figure 35, in addition to descriptors such as service list descriptors, TLV-NIT also contains broadcast service configuration information descriptors. The service list descriptor provides a list of broadcast services and service format types within each TLV stream.

[0092] Figure 36 is a flowchart illustrating the operation of the microcontroller 72. As shown in Figure 36, the microcontroller 72 obtains the TLV-NIT (broadcast service configuration information descriptor in Figure 34) supplied from the receiver 71 and obtains the Lch_TLV_stream_id and Lch_service_id for each Lch (S111). The microcontroller 72 specifies the Lch hierarchy that contains the obtained Lch_TLV_stream_id and Lch_service_id (S112). This allows the receiver 71 to select the Lch hierarchy specified by the microcontroller 72.

[0093] As described above, by having the transmitter 21 place Lch tuning configuration information (broadcast service configuration information descriptor) in the TLV-NIT, the microcontroller 72 can specify the Lch hierarchy based on the broadcast service configuration information descriptor.

[0094] <Configuration Information> Figure 37 shows a first example of transmission control auxiliary information including Lch selection configuration information in the first method. The configuration of this transmission control auxiliary information corresponds to the first and second embodiments of the embodiments described above, and includes the correspondence between the Lch hierarchy and group_id.

[0095] As shown in Figure 37, the transmission control auxiliary information includes a 3-bit num_of_lch_group, and within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, there are 3 bits group_id, 3 bits lch_layer_index, 3 bits lch_subframe_index, 1 bit tlv_repeat, and 1 bit tlv_update.

[0096] `group_id` indicates the group identifier (group ID). `group_id` corresponds to the `group_id` in the `group_id` information list. `lch_layer_index` indicates the Lch layer. `lch_subframe_index` indicates the Lch subframe number. `tlv_repeat` indicates whether the same TLV information is repeatedly retransmitted within the frame. `tlv_update` indicates whether the TLV content has been updated since the previous frame.

[0097] Figure 38 shows a second example of transmission control auxiliary information including Lch selection configuration information in the first method. The configuration of this transmission control auxiliary information corresponds to the third and fourth embodiments of the embodiments described above, and includes lch_group_identification and the correspondence between Lch hierarchy and lch_group_id.

[0098] As shown in Figure 38, the transmission control auxiliary information includes 3 bits lch_group_identification and 3 bits num_of_lch_group. Within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, 3 bits lch_group_id, 3 bits lch_layer_index, 3 bits lch_subframe_index, 1 bit tlv_repeat, and 1 bit tlv_update are placed.

[0099] lch_group_identification indicates the Lch group identification number. lch_group_id indicates the group identifier for Lch (Lch group ID). In other words, the group ID indicated by lch_group_id is different from the main line group ID. lch_layer_index indicates the Lch layer. lch_subframe_index indicates the Lch subframe number. tlv_repeat indicates whether the same TLV information is repeatedly retransmitted within the frame. tlv_update indicates whether the TLV content has been updated since the previous frame.

[0100] Figure 39 shows a first example of an Lch TLV containing Lch tuning configuration information in the second method. The configuration of this Lch TLV corresponds to the fifth to seventh embodiments of the above-described embodiments and includes the correspondence between the Lch hierarchy and group_id.

[0101] As shown in Figure 39, the Lch TLV contains an 8-bit type, a 16-bit length, and a 3-bit num_of_lch_group. Within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, there are three bits for group_id, three bits for lch_layer_index, three bits for lch_subframe_index, one bit for tlv_repeat, and one bit for tlv_update. In addition, two bits for reserved2 and five bits for reserved1 are reserved outside the loop.

[0102] `type` indicates the packet type. `Length` indicates the data length. `group_id` indicates the group identifier (group ID). `group_id` corresponds to the `group_id` in the `group_id` information list. `lch_layer_index` indicates the Lch layer. `lch_subframe_index` indicates the Lch subframe number. `tlv_repeat` indicates whether the same TLV information is repeatedly retransmitted within the frame. `tlv_update` indicates whether the TLV content has been updated since the previous frame.

[0103] Figure 40 shows a second example of an Lch TLV including Lch tuning configuration information in the second method. The configuration of this Lch TLV corresponds to the eighth to tenth embodiments of the embodiments described above, and includes lch_group_identification and the correspondence between Lch hierarchy and group_id.

[0104] As shown in Figure 40, the Lch TLV contains 8 bits for type, 16 bits for length, 3 bits for lch_group_identification, and 3 bits for num_of_lch_group. Within a loop corresponding to the number of Lch groups indicated by num_of_lch_group, there are 3 bits for lch_group_id, 3 bits for lch_layer_index, 3 bits for lch_subframe_index, 1 bit for tlv_repeat, and 1 bit for tlv_update. In addition, 2 bits for reserved2 and 5 bits for reserved1 are reserved outside the loop.

[0105] `type` indicates the packet type. `length` indicates the data length. `lch_group_identification` indicates the Lch group identification number. `lch_group_id` indicates the group identifier for Lch (Lch group ID). In other words, the group ID indicated by `lch_group_id` is different from the main line group ID. `lch_layer_index` indicates the Lch layer. `lch_subframe_index` indicates the Lch subframe number. `tlv_repeat` indicates whether the same TLV information is repeatedly retransmitted within the frame. `tlv_update` indicates whether the TLV content has been updated since the previous frame.

[0106] Figure 41 shows a first example of a broadcast service configuration information descriptor that includes Lch channel selection configuration information in the third system. The configuration of this broadcast service configuration information descriptor corresponds to the 11th embodiment among the embodiments described above and is included in TLV-NIT.

[0107] As shown in Figure 41, the broadcast service configuration information descriptor contains an 8-bit descriptor_tag, an 8-bit descriptor_length, an 8-bit version, and an 8-bit number_of_Lch_service. Within a loop corresponding to the number of services indicated by number_of_Lch_service, a 16-bit Lch_TLV_stream_id and a 16-bit Lch_service_id are placed.

[0108] descriptor_tag indicates the descriptor tag. descriptor_length indicates the descriptor length. version indicates the version. Lch_TLV_stream_id indicates the Lch's TLV stream ID. Lch_service_id indicates the Lch's service ID.

[0109] Figure 42 shows a second example of a broadcast service configuration information descriptor that includes Lch channel selection configuration information in the third system. In this broadcast service configuration information descriptor, only Lch_service_id is placed within a loop corresponding to the number of services.

[0110] As shown in Figure 42, the broadcast service configuration information descriptor contains a 16-bit Lch_service_id within a loop corresponding to the number of services indicated by number_of_Lch_service. The Lch_service_id indicates the Lch service ID.

[0111] Refer to Figures 43 and 44 to explain an example of operation using tlv_repeat and tlv_update. For example, the transmission control auxiliary information shown in Figure 37 contains 1 bit tlv_repeat and 1 bit tlv_update, and the meaning of the combination of these bits is as shown in Figure 43. That is, if tlv_repeat = 1 and tlv_update = 1 are specified, the same TLV will be sent repeatedly, and it will be indicated that there is an update to the content of the TLV in that frame. If tlv_repeat = 1 and tlv_update = 0 are specified, the same TLV will be sent repeatedly, and it will be indicated that there is no update to the content of the TLV in that frame. If tlv_repeat = 0 is specified, it will be indicated that the same TLV will not be sent repeatedly.

[0112] As shown in Figure 44, we assume that when TLV#1 is sent four times, and then TLV#2 (a TLV with updated content from TLV#1) is sent three times, the repeatedly sent TLVs (TLV#1, TLV#2) are included in physical layer frames #1, #2, and #3. Here, the horizontal direction in the figure represents time, and physical layer frames #1, #2, and #3 are sent in that order. In this case, the first TLV#1 up to partway through the third TLV#1 is included in frame #1, the part from partway through the third TLV#1 up to partway through the first TLV#2 is included in frame #2, and the part from partway through the first TLV#2 up to partway through the third TLV#2 is included in frame #3.

[0113] In this case, since frame #1 contains the same TLV #1 repeatedly, the transmission control auxiliary information specifies tlv_repeat = 1 and tlv_update = 0. In frame #2, since TLV #1 and TLV #2 are repeatedly contained, the transmission control auxiliary information specifies tlv_repeat = 1 and tlv_update = 1. In frame #3, since the same TLV #2 is repeatedly contained, the transmission control auxiliary information specifies tlv_repeat = 1 and tlv_update = 0.

[0114] In this way, by adding tlv_repeat and tlv_update to the Lch tuning configuration information, the receiving device 12 can determine whether the transmitted Lch TLV is transmitted using the data carousel method (including whether the TLV is updated). As a result, the receiving device 12 can perform operations according to its own determination, reducing the processing load and power consumption. The data carousel method is a method of repeatedly transmitting the same data. In Figures 43 and 44, the transmission control auxiliary information shown in Figure 37 was used as an example for explanation, but similar operations can be performed by specifying bits for tlv_repeat and tlv_update when using the transmission control auxiliary information shown in Figure 38, or the Lch TLV shown in Figures 39 and 40.

[0115] As described above, according to this disclosure, by transmitting Lch tuning configuration information, the receiver can appropriately select Lch broadcast services. In particular, in the second method, by using Lch TLV, it is possible to set Lch tuning information (configuration information) without changing the transmission control auxiliary information of the transmission control information (TMCC). Furthermore, in the first and second methods, it is also possible to configure Lch broadcast services in a way that is not tied to the broadcaster's group_id by using area codes (e.g., prefectures).

[0116] <Modifications> In the above description, the next-generation ISDB-T system (advanced terrestrial broadcasting system) was described as the broadcasting system for terrestrial digital television broadcasting, but this disclosure may be applied to other broadcasting systems. Also, in the above description, the receiving device 12 was given the example of a television receiver, a smartphone, etc., but the fixed receiver may be an electronic device such as a set-top box (STB), a recording device, a game console, or a PC (Personal Computer). Furthermore, the mobile receiver may be an electronic device such as a mobile phone or a tablet computer. In addition, the receiving device 12 may be an electronic device such as an in-vehicle device such as an in-car television, or a wearable computer such as a head-mounted display (HMD).

[0117] In the transmission system configuration shown in Figure 1 above, the example illustrates a case where there is one receiving device 12. However, in reality, multiple receiving devices 12 can be provided, each capable of receiving and processing the transmission signals transmitted from the transmitting device 11. Also, although Figures 2 and 8 above show the configurations of the transmitting device 11 and the transmitter 21, these components (blocks) do not need to be housed in a single enclosure. For example, the transmitting device 11 may be configured as a transmission system (broadcast transmission system) in which at least one of the components shown in Figures 2 and 8 is located in another device (broadcast server). Note that a system refers to a logical collection of multiple devices.

[0118] <Computer Configuration> The series of processes described above can be executed by hardware or by software. When the series of processes are executed by software, the programs that make up that software are installed on the computer. Figure 45 shows an example of the hardware configuration of a computer that executes the series of processes described above by program.

[0119] In a computer, the CPU (Central Processing Unit) 201, ROM (Read Only Memory) 202, and RAM (Random Access Memory) 203 are interconnected by a bus 204. An input / output interface 205 is further connected to the bus 204. An input / output interface 205 is connected to an input unit 206, an output unit 207, a storage unit 208, a communication unit 209, and a drive 210.

[0120] The input unit 206 consists of a keyboard, mouse, microphone, etc. The output unit 207 consists of a display, speaker, etc. The storage unit 208 consists of a hard disk, non-volatile memory, etc. The communication unit 209 consists of a network interface, etc. The drive 210 drives a removable recording medium 211 such as semiconductor memory, magnetic disk, optical disk, or magneto-optical disk.

[0121] In a computer configured as described above, the CPU 201 loads programs stored in the ROM 202 and memory unit 208 into the RAM 203 via the input / output interface 205 and bus 204, and executes them, thereby performing the series of processes described above.

[0122] The program executed by the computer (CPU 201) can be provided by recording it on a removable recording medium 211, such as a packaged medium. The program can also be provided via wired or wireless transmission media, such as a local area network, the internet, or digital satellite broadcasting.

[0123] In a computer, a program can be installed in the storage unit 208 via the input / output interface 205 by inserting the removable recording medium 211 into the drive 210. Alternatively, a program can be received by the communication unit 209 via a wired or wireless transmission medium and installed in the storage unit 208. Furthermore, programs can be pre-installed in the ROM 202 or the storage unit 208.

[0124] The processes that a computer performs according to a program include processes that are executed in parallel or individually (for example, parallel processing or object-based processing). Furthermore, a program may be processed by a single computer (processor) or by multiple computers in a distributed manner.

[0125] The embodiments described herein are not limited to those described above, and various modifications are possible without departing from the spirit of this disclosure. Furthermore, the effects described herein are merely illustrative and not limiting, and other effects may also occur.

[0126] Furthermore, this disclosure can take the following form.

[0127] (1) A transmitting device comprising a generation unit that generates configuration information necessary for tuning to the Lch hierarchy, and a transmitting unit that transmits a broadcast signal including the generated configuration information. (2) The transmitting device according to (1), wherein the configuration information is placed in the transmission control auxiliary information of TMCC. (3) The transmitting device according to (1), wherein the configuration information is placed in the Lch TLV signal. (4) The transmitting device according to (1), wherein the configuration information is placed in TLV-NIT. (5) A transmitting method comprising a transmitting device generating configuration information necessary for tuning to the Lch hierarchy, and transmitting a broadcast signal including the generated configuration information. (6) A receiving device comprising a receiving unit that receives a broadcast signal including configuration information necessary for tuning to the Lch hierarchy, and a control unit that controls the receiving unit, wherein the receiving device tunes to the Lch hierarchy based on the configuration information included in the broadcast signal. (7) The receiving device according to (6), wherein the configuration information is placed in the transmission control auxiliary information of TMCC. (8) The receiving device according to (6), wherein the configuration information is placed in the Lch TLV signal. (9) The receiving device described in (6) is located in the TLV-NIT. (10) A receiving method comprising: the receiving device receiving a broadcast signal containing configuration information necessary for tuning to the Lch hierarchy; and tuning to the Lch hierarchy based on the configuration information contained in the broadcast signal.

[0128] 11 Transmitter, 12 Receiver, 21 Transmitter, 22 Generation Unit, 31 Input Interface, 32 Primary Modulation Unit, 33 Level Adjustment Unit, 34 Layer Combination Unit, 35 Bandwidth Division Unit, 36 Time-Like Unit, 37 Frequency-Like Unit, 38 Bandwidth Combination Unit, 39 Pilot Generation Unit, 40 Differential Reference Addition Unit, 41 DBPSK Modulation Unit, 42 OFDM Frame Composition Unit, 43 IFFT Unit, 44 GI Addition Unit, 51 Input Interface, 52 Lch Separation Unit, 53 Time-Division Multiplexed Frame Composition Unit, 71 Receiver, 72 Microcontroller, 201 CPU

Claims

1. A transmitting device comprising a generation unit that generates configuration information necessary for tuning Lch hierarchy, and a transmission unit that transmits a broadcast signal including the generated configuration information.

2. The transmitting device according to claim 1, wherein the configuration information is placed in the transmission control auxiliary information of the TMCC.

3. The transmitting device according to claim 1, wherein the configuration information is placed in the Lch TLV signal.

4. The transmitting device according to claim 1, wherein the configuration information is placed in the TLV-NIT.

5. A transmission method comprising: a transmitting device generating configuration information necessary for tuning to the Lch hierarchy; and transmitting a broadcast signal containing the generated configuration information.

6. A receiving device comprising a receiving unit that receives a broadcast signal containing configuration information necessary for tuning to the Lch hierarchy, and a control unit that controls the receiving unit, wherein the receiving device tunes to the Lch hierarchy based on the configuration information contained in the broadcast signal.

7. The receiving device according to claim 6, wherein the configuration information is placed in the transmission control auxiliary information of the TMCC.

8. The receiving device according to claim 6, wherein the configuration information is arranged in the Lch TLV signal.

9. The receiving device according to claim 6, wherein the configuration information is placed in the TLV-NIT.

10. A receiving method comprising: a receiving device receiving a broadcast signal containing configuration information necessary for tuning to an Lch hierarchy; and tuning to an Lch hierarchy based on the configuration information contained in the broadcast signal.

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