JPH0983883A - Channel selecting apparatus, channel selecting method, broadcasting apparatus and broadcasting method - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To output video, text and audio services provided in a plurality of channels of a specific broadcast band in an arbitrary combination. SOLUTION: When a packet designation signal for designating a combination of video, text, and audio services of a plurality of channels of a specific broadcast band by a user operation is input from a remote commander, a channel selection device displays video corresponding to the input signal. Extracts and outputs text and voice packet signals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel selection device, a channel selection method, a broadcasting device and a broadcasting method, and more particularly, the broadcasting device generates a packet containing a list of packets of a broadcast channel, and the channel selection device Select a predetermined packet signal from video packet signal, audio packet signal, or text packet signal of one broadcast channel,
The present invention relates to a channel selection device and a channel selection method, a broadcasting device and a broadcasting method, which are combined with a signal selected from a video packet signal, an audio packet signal, or a text packet signal of another broadcast channel and output.

[0002]

2. Description of the Related Art Broadcast service information provided to users includes video information, audio information, text information and the like. These pieces of information have been compressed with high density and transmitted using radio waves or signals flowing through cable lines as media, particularly with the progress of data compression technology in the field of digital broadcasting.

FIG. 16 shows a configuration example of a conventional analog signal channel selecting device.

A signal designating a specific band (specific broadcast channel) from the user is transmitted from the remote commander 1 to the control circuit 6 in the channel selecting device 5 via an infrared signal.

The signal of each broadcasting channel is transmitted as an electric wave from each broadcasting station, and this electric wave is received by the antenna 2 and converted into an internal signal. The converted internal signal is transmitted to the band selection circuit 7 of the channel selection device 5.
The band selection circuit 7 is configured to select a specific broadcast band based on the information on the broadcast band designated by the user which is output from the control circuit 6.

The band selecting circuit 7 tunes a specific broadcasting band (specific broadcasting channel), extracts only the specific broadcasting band signal from a plurality of broadcasting band signals, and further,
This signal is separated into a video signal, a text signal, and an audio signal.

The video signal processing circuit 8 decodes the video signal of the video signal and the text signal supplied from the band selection circuit 7, processes the signal according to the interface of the display device 3, and processes the text. The signal is output to the display device 3 together with the signal.

The audio signal processing circuit 9 performs decoding processing on the audio signal supplied from the band selection circuit 7, and then
The signal is amplified and output to the speaker 4.

In this way, the information of the broadcast band (broadcast channel) selected by the user is displayed on the display device 3 and the speaker 4 by the image, text, and the like of the broadcast channel.
And provided to the user as voice.

[0010]

However, in the conventional channel selection device, it is possible to select one broadcast channel from a plurality of broadcast channel signals, but the combination of video, text, and audio is fixed. , There was a problem that the user cannot select. That is, for example, it is not possible to combine and output the text information provided on the first broadcast channel, the video information provided on the second broadcast channel, and the audio information provided on the third broadcast channel. There were challenges.

In the conventional channel selecting apparatus shown in FIG.
The band selection circuit 7, the video signal processing circuit 8, and the audio signal processing circuit 9 are prepared for a plurality of broadcast channels, and are provided between the video signal processing circuit 8 and the display device 3, and between the audio signal processing circuit 9 and the speaker 4, respectively. By providing an output selection circuit for selectively outputting the video, text, and audio signals, the above-described combination becomes possible. However, doing so has a problem of increasing the manufacturing cost of the channel selection device 5.

Further, even when signals are digitized and signals of a plurality of broadcast channels are packetized by one transmission channel and multiplexed and transmitted, if the reception of one broadcast channel is instructed, the video signal of that broadcast channel is issued. However, there is a problem in that the packets of the text signal and the voice signal are automatically selected, and the user cannot freely select the packets of the arbitrary broadcast channels by combining them.

The present invention has been made in view of the above circumstances, and is intended to enable selective output of any combination of video signals, audio signals, and text signals provided by a plurality of broadcast channels. .

[0014]

A channel selecting apparatus according to claim 1, among a plurality of broadcast channel signals including at least two of at least a video signal, an audio signal corresponding to the video signal, and a data signal. Receiving means for receiving a predetermined one, a video signal of a first broadcast channel signal of the broadcast channel signals, and an audio signal or a data signal of a second broadcast channel signal different from the first broadcast channel signal. It is characterized by comprising a selecting means for selecting.

The tuning method according to claim 5 is
A video of a first broadcast channel signal of the broadcast channel signals, which receives a predetermined one from among a plurality of broadcast channel signals including at least two of a video signal, a corresponding audio signal, and a data signal. It is characterized in that a signal and an audio signal or a data signal of a second broadcast channel signal different from the first broadcast channel signal are selected.

According to a sixth aspect of the present invention, there is provided a channel selection device, wherein at least a packet including a list of packets is selected from a broadcast band signal including a packet having a list of packets of a plurality of broadcast channels transmitted by the broadcast band signal. The detection means for detecting, and the generation means for generating a signal for indicating whether the signal of the broadcast channel is constituted by a video signal, an audio signal or a data signal corresponding to the detection result of the detection means. It is characterized by

According to a seventh aspect of the present invention, there is provided a channel selection method, wherein at least a packet including a list of packets is selected from a broadcast band signal including a packet having a list of packets of a plurality of broadcast channels transmitted by the broadcast band signal. Detect and
It is characterized in that a signal for displaying whether the signal of the broadcast channel is composed of a video signal, an audio signal or a data signal is generated corresponding to the detection result.

A broadcasting device according to a eighth aspect of the invention includes a generation means for generating a packet having a list of packets of a plurality of broadcast channels transmitted by one broadcast band signal,
It is characterized in that it is provided with a packetizer for a plurality of broadcast channels and a superimposing means for superimposing the packet generated by the generating means into one broadcast band signal.

According to a ninth aspect of the broadcasting method, a packet having a list of packets of a plurality of broadcasting channels transmitted in one broadcasting band signal is generated, and the packets are packetized into a plurality of broadcasting channels. It is characterized in that a packet having a list of packets is superimposed on one broadcast band signal.

According to another aspect of the present invention, there is provided the channel selecting device, wherein each of the receiving means has at least two of at least a video signal, an audio signal corresponding thereto, and a data signal.
A predetermined one is received from a plurality of broadcast channel signals including one, and the selecting means selects a first one of the broadcast channel signals.
The video signal of the broadcast channel signal and the audio signal or the data signal of the second broadcast channel signal different from the first broadcast channel signal are selected.

In the channel selection method according to the fifth aspect, a predetermined one is selected from a plurality of broadcast channel signals each including at least two of at least a video signal, an audio signal corresponding thereto, and a data signal. The video signal of the first broadcast channel signal and the audio signal or the data signal of the second broadcast channel signal different from the first broadcast channel signal are received and selected.

In the channel selecting apparatus according to the sixth aspect, the detecting means extracts a packet from a broadcast band signal including at least a packet having a list of packets of a plurality of broadcast channels transmitted by the broadcast band signal. The packet including the list is detected, and the generation unit generates a signal for indicating whether the signal of the broadcast channel is composed of a video signal, an audio signal or a data signal, corresponding to the detection result.

In the channel selection method according to claim 7, a packet including a list of packets from a broadcast band signal including at least a packet containing a list of packets of a plurality of broadcast channels transmitted by the broadcast band signal. Is detected, and a signal for indicating whether the signal of the broadcast channel is composed of a video signal, an audio signal or a data signal is generated corresponding to the detection result.

In the broadcasting apparatus according to the present invention, the generation means generates a packet having a list of packets of a plurality of broadcast channels transmitted by one broadcast band signal, and the superposition means packetizes. The plurality of broadcast channel packets and the packet generated by the generating means are superimposed on one broadcast band signal.

In the broadcasting method according to claim 9, 1
A packet containing a list of packets of a plurality of broadcast channels transmitted by one broadcast band signal is generated, and a packet of a plurality of packetized broadcast channels and a packet containing the list of packets are formed into one broadcast band signal. To superimpose inside.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below. In order to clarify the correspondence between each means described in the claims and the following embodiments, parentheses after each means are described. Within
The characteristics of the present invention will be described as follows by adding a corresponding embodiment (but one example). However, of course,
It does not mean that each means is limited to those described.

[0027] The tuning device according to claim 1 is
Receiving means for receiving a predetermined one of a plurality of broadcast channel signals including at least two of a video signal, an audio signal corresponding to the video signal, and a data signal (for example, the selection unit of FIG. 4 for performing the process of FIG. 9). Station device 15),
Selection means for selecting a video signal of the first broadcast channel signal of the broadcast channel signals and an audio signal or a data signal of the second broadcast channel signal different from the first broadcast channel signal (for example, in FIG. 4). A packet selection circuit 63) and output means for outputting the video signal and the audio signal or the data signal selected by the selection means (for example, the video signal processing circuit 64 and the audio signal processing circuit 6 in FIG. 4).
5) and are provided.

According to a second aspect of the present invention, there is provided a channel selection device which displays a signal for indicating whether a broadcast channel signal is composed of a video signal, an audio signal or a data signal, and a selection result by the selection means. The present invention is further characterized by further including generation means for generating a signal to be displayed (for example, the channel selection device 15 of FIG. 10 that performs the process of step S64 of FIG. 11).

The channel selecting device according to claim 4 detects a packet including a list of packets from a broadcast band signal including at least a packet including a list of packets of the broadcast channel transmitted by the broadcast band signal. Detecting means (for example, the tuning device 1 of FIG. 4 for performing the processing of FIG.
5) is further provided.

According to a sixth aspect of the present invention, there is provided a channel selection device, wherein at least a packet from a broadcast band signal including a packet having a list of packets of a plurality of broadcast channels transmitted by the broadcast band signal is included in a packet of the previous period. Detecting means (for example, the channel selecting device 15 of FIG. 10 for performing the processing of FIG. 8) for detecting the signal, and the signal of the broadcast channel corresponding to the detection result is constituted by any one of a video signal, an audio signal and a data signal. Generating means for generating a signal for indicating whether or not (for example, FIG. 1 performing step S64 in FIG. 11).
0 channel selection device 15).

The broadcasting device according to claim 8 is,
Packet means for digitizing and packetizing the video signal, the audio signal or the data signal of each broadcast channel signal including at least two of the video signal, the corresponding audio signal and the data signal (for example, FIG. 3).
A / D conversion circuit 40-1 and video encoder 42-1) and a generation means for generating a packet having a list of packets of a plurality of broadcast channels transmitted by one broadcast band signal (for example, FIG. 3). Packet list generation circuit 45), and a superimposing unit that superimposes the packets of a plurality of broadcast channels packetized by the packet unit and the packet generated by the generating unit into one broadcast band signal (for example, FIG. 3). Multiplexer 46) of the above.

FIG. 1 is a diagram showing the configuration of an embodiment of a digital broadcasting channel selection system to which the channel selection device of the present invention is applied.

A signal corresponding to a user's operation is transmitted from the remote commander 11 as an operation unit to the channel selection device 15 as an infrared signal. As this operation unit, an operation panel or the like equipped in the channel selection device 15 can be used in addition to a remote commander that transmits an infrared signal or a wireless signal. In that case, the operation signal is transmitted via the in-device bus or, if the operation panel is separated from the tuning device 15, via the inter-device bus.

The digital broadcasting signal transmitted from the broadcasting device 16 installed in the broadcasting station includes a plurality of broadcasting channels in the same transmission channel, and each broadcasting channel includes a packetized video signal and a text signal. (Data signal) and voice signal are included. The signal of this transmission channel also includes the packets of the packet list indicating the contents of the packets included in the transmission channel. Of course, the contents of packets included in other transmission channels may be included in the packet list. In this case, the packet list is common to all transmission channels.

Further, each packet is provided with a packet ID for identifying the packet, and the packet ID provides a packet list, a video packet signal provided on a specific broadcast channel, and a specific broadcast channel. It is possible to identify a text packet signal that is provided and a voice packet signal that is provided on a specific broadcast channel. In addition, the packet list includes the names of the superimposed broadcast channels and the packet IDs of the video packet signal, the text packet signal, and the audio packet signal provided on each broadcast channel.

The broadcast signal composed of a plurality of transmission channels is received by the antenna 12 and then received by the channel selection device 15.
It is designed to be sent to. As a medium for transmitting a broadcast signal, a wire such as a CATV cable can be used instead of a radio wave. In that case, instead of the antenna 12, a device that receives a signal according to an interface with the channel selection device 15 is used.

The tuning device 15 specifies the transmission channel band specified by the user from the received signal, and selects the video signal, the text signal, and the audio signal provided by a plurality of broadcasting channels included in the specified transmission channel. Any combination can be selected by the user.

The video signal and the text signal transmitted from the tuning device 15 are provided to the user as a video output by the display device 13, and the audio signal transmitted from the tuning device 15 is output to the user as a voice output by the speaker 14. It is designed to be offered.

The channel selection system shown in this embodiment selects a signal of a specific broadcast band from broadcast signals composed of a plurality of broadcast bands (transmission channels), and video signals of a plurality of broadcast channels of the selected broadcast band, The system outputs a text signal and a voice signal in a combination selected by the user.

FIG. 2 is a block diagram showing the configuration of an embodiment of the broadcasting device 16 shown in FIG.

The video / audio signals for each broadcast band are separated by the signal selection circuit 20 into m broadcast bands, and processing circuits 21-1 to 21- for processing the respective broadcast band signals.
It is designed to be output to m.

Each of the processing circuits 21-1 to 21-m receives a plurality of (n) broadcast channel signals contained in one broadcast band signal output from the signal selection circuit 20 as a video signal and an audio signal of each channel. , And each text signal are packetized, and these packet signals are superimposed (multiplexed) on one broadcast band signal.

Further, each processing circuit 21-1 to 21-m
Is configured to generate list information indicating the contents of each packet and packetize the list information.

Each modulation circuit 22-1 to 22-m modulates each broadcast band signal supplied from each processing circuit 21-1 to 21-m by a predetermined method such as QPSK modulation or FM modulation, and a multiplexer. It is designed to output to 23.

Each broadcast band signal output from each modulation circuit 22-1 to 22-m is output to 1 by the multiplexer 23.
The signals are multiplexed into one broadcast signal and transmitted as radio waves from the antenna 25 via the transmission circuit 24.

FIG. 3 is a block diagram showing the configuration of an embodiment of the processing circuits 21-1 to 21-m shown in FIG.

The video signal of the first broadcast channel (CH1) is A (analog) by the A / D conversion circuit 40-1.
/ D (digital) conversion, followed by compression by the video encoder 42-1 by the MPEG method, packetization, and output to the multiplexer 46.

The audio signal of the first broadcast channel (CH1) is A / D converted by the A / D conversion circuit 41-1 and then M by the audio encoder 43-1.
The data is compressed by the PEG method, packetized, and transmitted to the multiplexer 46.

The text data of the first broadcast channel (CH1) is encoded by the text encoder 44-1, packetized, and output to the multiplexer 46.

From the second broadcast channel (CH2) to the nth
The same processing as in the case of the first broadcast channel is performed also in the broadcast channel (CHn) of.

The packet list generation circuit 45 recognizes the packet IDs of the video signal, the audio signal, and the text data of each broadcast channel, and a list information signal indicating whether the packet signal in this broadcast band is composed of packets. Is generated, the list information signal is packetized and output to the multiplexer 46.

The multiplexer 46 is adapted to multiplex these packet signals and output them.

FIG. 4 is a block diagram showing the configuration of an embodiment of the channel selection device 15 shown in FIG.

A signal designating a specific broadcast band (transmission channel) from a user, a specific video signal, a specific text signal, a specific audio signal, or all signals (video signal, text signal, audio signal) provided on a specific broadcasting channel. A signal designating ")" is transmitted from the remote commander 11 to the control circuit 60 of the channel selection device 15 via an infrared signal.

A broadcast signal composed of a plurality of broadcast bands is received by the antenna 12 from the transmission radio wave as its medium,
The signal is supplied to the band selection circuit 61 of the channel selection device 15. The band selection circuit 61 includes the control circuit 6
It is controlled to select a specific broadcast band based on the information of the broadcast band specified by the user supplied from 0.

A signal for specifying a video signal, a text signal, or an audio signal provided by a user on an arbitrary broadcast channel, or all signals (video signal, text signal, and audio signal) provided on a specific broadcast channel. ) Is designated by the control circuit 60, and the control circuit 60 sends a command signal for selecting a predetermined broadcast band to the band selection circuit according to the identification result. In addition to outputting to 61, a command signal for extracting a predetermined packet signal is output to the packet selection circuit 63.

The band selection circuit 61 is adapted to select a signal in a specific broadcast band in response to this command and output it to the conversion circuit 62.

The signal of the selected specific broadcast band is subjected to processing such as error detection and correction and descrambling by the conversion circuit 62, and the video signal provided in each broadcast channel according to the format determined as the broadcast signal. , Packet signal of text signal and voice signal, or packet signal of packet list. Each packet signal is supplied to the packet selection circuit 63.

The packet selection circuit 63 selects these packet signals corresponding to the combination of packet IDs designated by the control circuit 60, outputs the video packet signal and the text packet signal to the video signal processing circuit 64, and outputs the audio packet. The signal is output to the audio signal processing circuit 65. Further, the packet selection circuit 63 outputs a packet list for managing packet IDs and packet signal types to the control circuit 60 in response to a request from the control circuit 60.

The video signal processing circuit 64 performs MPEG decoding processing on the video signal, processes the video signal in accordance with the interface of the display device 13, and outputs it to the display device 3 together with the text signal.

The audio signal processing circuit 65 is adapted to perform MPEG decoding processing on the audio signal, amplify it, and output it to the speaker 4.

FIG. 5 is a diagram showing an example of the operation unit of the remote commander 11.

This operation section is composed of a conventional UP / DOWN key for TV (television) broadcasting selection and five types of UP / DOWN keys for performing the same instruction in the channel selection instruction method.

Each time the user presses the video signal UP key U1, the channel selecting device 15 is instructed to select the video of the next broadcast channel (broadcast channel number), and the video signal DOWN key D1 is pressed once. Each time, the video selection of the previous broadcast channel (broadcast channel number) is designated.

Similarly, each time the user presses the voice UP key U2, the text UP key U3, or the program UP key U4 once, the channel selection device 15 is caused to receive the voice, text, or the voice of the next broadcast channel, respectively. The user is instructed to select a program (video, audio, and text constituting the program), and the user selects the audio DOWN key D2 and the text DOWN.
Each time the key D3 or the program DOWN key D4 is pressed, the sound, the text, the text of the previous broadcast channel,
Alternatively, selection of a program (video, audio, and text that compose the program) is instructed.

Also, the user sets the broadcast band UP key U5 to 1
Each time the button is pressed, the tuning device 15 is instructed to tune to the next broadcast band (transmission channel), and each time the user presses the broadcast band DOWN key D5 once, the previous broadcast band (transmission channel). Is tuned.

Another embodiment of the operation unit of the remote commander 11 is shown in FIG.

This operation unit is operated by UP key U10, DOWN
It is composed of a key D10 and a switching key S, and each time the user presses the switching key S once, a program selection mode,
The selection modes are cyclically switched in the order of the video selection mode, the audio selection mode, the text selection mode, and the broadcast band selection mode.

The instruction operation of the UP key U10 (or DOWN key 10D) to the channel selection device 15 in each selection mode is the same as the instruction operation of each UP (or DOWN) key of the operation unit of FIG.

Next, the processing operation of the channel selection device 15 shown in FIG. 4 corresponding to the user's key operation using the operation unit shown in FIG. 5 will be described with reference to the flowchart of FIG.

When the user activates the channel selection system of FIG. 1 including the channel selection device 15 by activating the system, the control circuit 60 of the channel selection device 15 is activated in step S11 of FIG. The first (initial setting) broadcast band is set as the broadcast band instructed by the user.

In the subsequent decision as to whether or not the instruction signal for tuning the broadcast band (transmission channel) shown in step S12 is input, in this case, step S1
Corresponding to the initial setting of 1, broadcast band (transmission channel)
Since it is determined that the instruction signal for tuning the
Subroutine processing shown in the subsequent step S13 is executed.

In step S13, the tuning process of the designated broadcast band, the contents recognition process of the packet list, and the like are performed. By this processing, the initially set first broadcast band is selected, and the control circuit 60 of the tuning device 15 is selected.
Understands the service provided in the first broadcast band from the packet list.

The details of the processing shown in step S13 will be described with reference to the flowchart of FIG.

When receiving the input of the signal instructing the selection of the designated broadcast band, the control circuit 60 commands the band selection circuit 61 to select the designated broadcast band. In response to this instruction, in step S30 of FIG. 8, the band selection circuit 61 selects the broadcast band designated by the user (in this case, the first broadcast band), and the signal of this broadcast band is sent to the conversion circuit 62. Output.

The signal in the broadcast band selected in step S30 is subjected to processing such as error detection / correction and descrambling by the conversion circuit 62 in step S31, and is a packet signal of a video signal, a text signal and an audio signal. Is converted to.

In step S32, the packet selection circuit 63
Selects a packet in the packet list from the packets of the broadcast band signal (transmission channel signal) supplied from the conversion circuit 62, and outputs this packet list to the control circuit 60. At this time, the packet list of the first broadcast band which is the initially set broadcast band is sent to the control circuit 60.

Subsequently, in step S33, the control circuit 60 recognizes the type of service provided within the specific broadcast band designated by the user, based on the packet list. At this time, the packet list of the first broadcast band is referred to, and the contents of this packet list are grasped.

Next, returning to the flowchart of FIG. 7, in step S14, the control circuit 60 uses the video signal, audio signal, and text signal of the initially set first broadcast channel as a packet signal instructed by the user to output. To set.

In the subsequent step S15, the packet signal requested by the user is selectively output. By this processing, the video signal, the audio signal, and the text signal of the first broadcasting channel of the first broadcasting band which is initialized are selected.
Output from

Here, details of the process shown in step S15 will be described with reference to the flowchart of FIG.

The signal processed in step S15 of FIG. 7 includes the output instruction signal of the video provided in the specific broadcast band, the output instruction signal of the text provided in the specific broadcast band, and the audio provided in the specific broadcast band. One of the output instruction signal and the output instruction signal of the program (video, text, and audio) of the specific broadcast channel provided in the specific broadcast band. For other signals, the steps S40, S43, S45, and S47 in FIG. 9 are used.
In the decision shown in (1), the control circuit 60 recognizes the signal as an unsuitable signal and performs an error process such as a re-input process or an error message display process in step S49.

In the decision shown in step S40,
The output instruction signal of the video provided in the specific broadcast band is recognized, the output instruction signal of the audio provided in the specific broadcast band is recognized in the decision shown in step S43, and the decision shown in step S45 is performed. The output instruction signal of the text provided in the specific broadcast band is recognized, and in the decision shown in step S47, the output instruction signal of the program (video, audio, and text) of the specific broadcast channel provided in the specific broadcast band is recognized. Recognition is done.

In this way, the video output instruction signal provided in the specific broadcast band, the audio output instruction signal provided in the specific broadcast band, the text output instruction signal provided in the specific broadcast band, and the specific broadcast band are sequentially provided in this manner. The instruction signal from the user is selected in the order of the program output instruction signal of the provided specific channel, and the process corresponding to each instruction signal is executed.

In the decision shown in step S40, when the control circuit 60 recognizes that the instruction signal of the video output provided in the specific broadcast band is received,
In the subsequent step S41, the packet selection circuit 63 issues an instruction to select the packet ID corresponding to the video signal and selectively output the video packet signal identified by this packet ID.
Output to

In the decision shown in step S43, when the control circuit 60 recognizes that it has received the audio output instruction signal provided in the specific broadcast band,
In the subsequent step S44, a packet ID corresponding to the voice signal is selected, and a command for selecting and outputting the text packet signal identified by this packet ID is output to the packet selection circuit 63.

In the decision shown in step S45, when the control circuit 60 recognizes that the instruction signal for text output provided in the specific broadcast band is received, in the subsequent step S46, the packet ID corresponding to the text signal is received. Is selected, and an instruction to select and output the voice packet signal identified by this packet ID is output to the packet selection circuit 63.

In the decision shown in step S47, when the control circuit 60 recognizes that the instruction signal of the program output of the specific broadcast channel provided in the specific broadcast band is received, the program is changed to the subsequent step S48. All the corresponding packet IDs are selected and an instruction to selectively output the packet signals identified by these packet IDs is output to the packet selection circuit 63.

Step S41, S44, S46, or S
In step S42 after 48, the packet selection circuit 63 extracts each packet signal based on the designated packet ID, outputs the video packet signal and the text packet signal to the video signal processing circuit 64, and outputs the audio packet signal. Output to the audio signal processing circuit 65.

In this way, the video packet signal, the text packet signal and the audio packet signal are output to the display device 13 and the speaker 14 via the video signal processing circuit 64 and the audio signal processing circuit 65, respectively.

In this case, the user instruction signal set in step S14 of FIG. 7 is the video, audio, and text output instruction signal of the initially set first broadcast channel. Therefore, step S47 of FIG. Then, this instruction signal is recognized, and in the subsequent step S48, the control circuit 60 causes the video packet signal of the corresponding broadcast channel,
An instruction to select the voice packet signal or the text packet signal is output to the packet selection circuit 63. In the following step S42, packet signals corresponding to these packet IDs are output to the video signal processing circuit 64 and the audio signal processing circuit 65.

The video, audio, and text of the first broadcast channel in the first broadcast band thus initialized are provided to the user.

Returning to the flowchart of FIG. 7, the channel selection device 15 continues to output the video and audio of the first broadcast channel in the first broadcast band until the next instruction signal is input in step S16.

In this state, it is assumed that the user presses the image UP key U1 on the operation unit shown in FIG. 5 once. At this time, the channel selection device 15 receives the video output instruction signal of the next broadcast channel (second broadcast channel), and the input key reception waiting shown in step S16 is released.

Returning to step S12, it is determined whether or not the signal is an instruction to tune the designated broadcast band.

In the decision at step S12, it is judged that the instruction signal is not a signal for instructing the tuning of the designated broadcasting band. Therefore, the process branches to step S15 and the video output process of the designated second broadcasting channel is performed. Be seen.

The video output process at this time will be described with reference to FIG. 9 showing the details of the process in step S15.
In step S40, it is determined that this instruction signal is an image output instruction signal, and in the subsequent step S41, the control circuit 60 issues an instruction to the packet selection circuit 63 to selectively output the video packet signal of the second broadcast channel. Output. In step S42, the packet signal (including the designated video packet signal) corresponding to each packet ID is output to the video signal processing circuit 64 and the audio signal processing circuit 65.

Thus, the video of the second broadcast channel of the first broadcast band, the sound of the first broadcast channel of the first broadcast band, and the text of the first broadcast channel of the first broadcast band. Is provided to the user.

Subsequently, returning to step S16 of FIG. 7, the channel selection device 15 outputs this video / audio signal until the next input signal is received.

[0100] In this way, the user can change the image UP of FIG.
Each time the (DOWN) key, the voice UP (DOWN) key, or the text UP (DOWN) key is pressed,
Video, audio and text of the next (previous) broadcast channel can be newly selected and output.

Next, in this state (the video of the second broadcast channel of the first broadcast band, the sound of the first broadcast channel of the first broadcast band, and the first broadcast channel of the first broadcast band). It is assumed that the user presses the broadcast band UP key U5 of FIG. 5 once from the state of outputting the text).

Then, the next broadcast band (second broadcast band)
The signal instructing the tuning of is received by the channel selection device 15, and the input key reception waiting shown in step S16 is released.

Returning to step S12, it is determined whether or not the signal is an instruction to tune the designated broadcast band.

In step S12, it is determined that the instruction signal from the user is a signal for instructing tuning of the broadcast band. Therefore, in the subsequent step S13, the flowchart of FIG. The processing shown is performed, and as a result, the second broadcast band is tuned, and the control circuit 60 grasps the contents of the packet list of the second broadcast band.

Next, in step S14, the control circuit 60 sets the initially set video and audio of the first broadcast channel as a packet signal instructed to be output by the user.

Subsequently, in the subsequent step S15, the video output processing of the first broadcast channel is performed.

In this way, the video and audio of the first broadcast channel in the second broadcast band is provided to the user. Succeedingly, in a step S16, the channel selecting device 15 outputs the video / audio signal until the next instruction signal is received.

As described above, the user can arbitrarily select the broadcast band, and from this state, FIG.
Video UP / DOWN key, audio UP / DOWN key,
By operating the text UP / DOWN key, the user can receive the provision of the video / audio service in which the video, audio, and text in the second broadcast band are freely combined.

FIG. 10 shows the second channel selection device 15 shown in FIG.
3 is a block diagram showing the configuration of the embodiment of FIG. The difference between the tuning device 15 shown in FIG. 10 and the tuning device 15 shown in FIG. 4 lies in the parts shown in the control circuit 60 and the video signal processing circuit 64. In FIG. 10, parts corresponding to those in FIG. The same reference numerals are given, and the description thereof will be omitted as appropriate.

When the control circuit 60 receives the signal of the packet list information for controlling the type of the packet signal input from the packet selection circuit 63, the control circuit 60 determines the packet signal of the designated broadcast band (transmission channel) based on the packet list. The type is grasped, an image data (selected image data) signal for displaying the type of the packet signal to the user is generated, and this signal is output to the video signal processing circuit 64.

When the control circuit 60 receives a packet signal selection instruction signal from the user via the remote commander 11, the control circuit 60 generates an image data signal for displaying a mark on the selected packet signal, This signal is output to the video signal processing circuit 64.

The video signal processing circuit 64 superimposes the above-mentioned image data signal output from the control circuit 60, the video packet signal and the text packet signal output from the packet selection circuit 63, and outputs them to the display device 13. Has been done.

Next, the processing operation of the channel selection device 15 shown in FIG. 10 will be described with reference to the flowchart of FIG.

The process of step S60 in FIG.
The process is the same as the process of step S11 of FIG.
The process of step S61 of FIG. 1 is the same as the process of step S13 of FIG. 7, and the process of step S62 of FIG. 11 is the same as the process of step S14 of FIG. The detailed description of the steps of Step 1 is omitted.

When the user activates the channel selection system of FIG. 1 including the channel selection device 15 by activating the system, in step S60 of FIG. 11, tuning of the first broadcast band is instructed. Signal is initialized as an instruction signal from the user, the first broadcast band is selected in step S61, and the control circuit 60 recognizes the contents of the packet list of the first broadcast band. continue,
In step S62, the signal instructing the output of the packet signal of the first broadcast channel is initialized as an instruction signal from the user.

In the subsequent subroutine processing of step S63, the packet signal of the first broadcast channel is output to the video signal processing circuit 64 and the audio signal processing circuit 65.

Details of the processing in step S63 will be described with reference to FIG.
This will be described with reference to the flowchart of FIG.

The process of the flowchart shown in FIG. 12 is obtained by connecting the processes of the decision part shown in the flowchart of FIG. 9 in series. In the process of FIG. 12, the same step number as the step corresponding to the case of FIG. Is attached, and the description is simplified as appropriate.

In step S50, the validity of the input signal from the user is checked, and if an inappropriate input signal is received, the control circuit 60 performs error processing such as re-input processing and error message output processing. To do.

In the following step S40, it is determined whether or not the instruction signal is an image output instruction signal. If it is determined that the instruction signal is not an image output instruction signal, the process branches to step S43, and the instruction signal is output. Is determined to be the video output instruction signal, the control circuit 60 outputs a command signal for selecting the designated video packet signal to the packet selection circuit 63 in the subsequent step S41, and the subsequent step S43. Process.

Similarly, steps S43 and S44.
When the user instructs the voice output, the control circuit 60 outputs a command signal for selecting the designated voice packet signal to the packet selection circuit 63, and the text output from the user is performed in step S45 and step S46. When instructed, the control circuit 60 outputs an instruction signal for selecting the designated text packet signal to the packet selection circuit 63, and in step S47 and step S48, control is performed when the user instructs the program output. The circuit 60 outputs a command signal for selecting the packet signal of the designated program to the packet selection circuit 63.

In the following step S42, the packet selection circuit 63 outputs the packet signal corresponding to the designated packet ID to the video signal processing circuit 64 and the audio signal processing circuit 65.

Since the user's instruction signal set in step S62 of FIG. 11 is the instruction signal of the video, audio, and text output of the initially set first broadcast channel, this instruction is issued in step S47 of FIG. The signal is recognized, and in the subsequent step S48, the control circuit 60
Outputs to the packet selection circuit 63 an instruction to select a video packet signal, an audio packet signal, and a text packet signal of the corresponding broadcast channel. In the following step S42, packet signals corresponding to these packet IDs are output to the video signal processing circuit 64 and the audio signal processing circuit 65.

[0124] In this way, the first initialization is performed.
The video, audio, and text of the first broadcast channel in the broadcast band of the are provided to the user.

Returning to the flowchart of FIG. 11, in step S64, the selection screen data signal is generated and output, and the selection screen is displayed to the user.

At this time, an embodiment of the selection screen displayed by the selection screen data generated by the channel selection device 15 is shown in FIG.
Shown in

Each line of the selection screen shown in FIG. 13 is a line G5.
As indicated by 0, it corresponds to specific program information. In addition, from the left side of each line, the service provider, the program name, the presence / absence of a video packet, the presence / absence of an audio packet, the presence / absence of a text packet, or their contents are shown. The presence / absence of each packet is indicated by an asterisk when it is present and blank when it is not present. At this time, the display when a specific program is selected is shown by M51 and M52. This M51 and M5
2, when a specific program is selected, the program name, the video packet of the program (if any), the audio packet of the program (if any), and the video text packet of the program Is marked (if any).

The user can grasp the service (packet signal) provided in the specific broadcast band on this screen, and can select the specific service from this screen.

The processing of step S64 of FIG. 11 will be described. The control circuit 60 refers to the packet list acquired in step S61 to generate an image data signal for displaying all services provided in the specific broadcast band. In addition, an image data signal for displaying the service (packet signal) designated by the user as a mark is generated,
This signal is output to the video signal processing circuit 64.

In this state (a state in which there is no input from the user after activating the channel selection system), the packet signal of the first broadcast channel is set as the packet signal instructed by the user in step S62. Therefore, as shown in FIG. 13, an image data signal for displaying the mark (mark M51 and mark M52) when one program is selected is generated and output to the video signal processing circuit 64.

At this time, the video signal processing circuit 64 operates as shown in FIG.
The image data signal of the screen shown by 3 and the packet selection circuit 63
The video packet signal from is superposed and output to the display device 13.

The user can operate the remote commander 11 from the selection screen shown in FIG. 13 to instruct the channel selection device 15 to select video / audio output.

FIG. 14 is a diagram showing an embodiment of the operation unit of the remote commander 11 for performing such an operation.

Each time the user presses the display key X once, the display of the selection screen and the non-display of the selection screen are switched, and when the confirmation key Y is pressed, a confirmation signal indicating that the combination of the selected video and audio is confirmed. Is output to the tuning device 15,
As a result, the selected combination of video and audio is output.

[0135] Further, the user selects the UP key U for switching the broadcast band.
By pressing 21 and the DOWN key D21, an instruction signal for instructing the selection of another broadcast band is output to the channel selection device 15.

The user selects the UP key U20 (DOWN key D
20) Press once to move the cursor one position up (down) and then press the RIGTH key R20 (LEFT key L20).
When is pressed once, the position of the cursor is moved one position to the right (left) on the selection screen.

In FIG. 13, marks M51 and M52 indicating that the video / audio is selected move together with this cursor, and the user can freely combine the output of the video / audio by using this cursor movement.

For example, the screen of FIG. 13 is displayed now, and the cursor is at the position (N) of the program of the first broadcast channel.
When the user presses the RIGTH key R20 shown in FIG. 14 once from this state, the cursor moves one position to the right (the position of the image of NHK) and the cursor moves to the program. Since it does not exist at the position (position of M51), the mark of M51 indicating that the program is selected is erased. As a result, the marks will appear in the video, audio, and text positions of the first broadcast channel,
The cursor is displayed at the position of the image of the first broadcast channel. From this state, the UP key U20 / DOWN key D20 can be used to select an image from the first to Nth broadcast channels.

The processing at this time will be described with reference to the flow chart of FIG. 11. The user can use the RIGHT key R20 shown in FIG.
When is pressed once, the user's instruction signal is received by the channel selection device 15, and the reception waiting of the input signal shown in step S65 of FIG. 11 is released.

At the decision at the subsequent step S66, the kind of the instruction signal is discriminated and the instruction signal is the RIGHT signal for moving the cursor to the right, so that the step S64
In step S64, the cursor is moved one position to the right (the position of the video of the first broadcast channel), and the selected service (packet signal) is located at the position of the video, audio, and text of the first broadcast channel. An image data signal for displaying the mark indicating is generated, and this signal is output to the video signal processing circuit 64.

After this, the user selects the DOWN key D in FIG.
When 20 is pressed once, the channel selection device 5 receives the user's instruction signal, and the reception waiting of the input signal shown in step S65 of FIG. 11 is released.

At the decision of the subsequent step S66, the type of the instruction signal is discriminated, and the instruction signal is the DOW of the image.
Since it is an N signal, it branches to step S64,
At 64, an image data signal for displaying the service (packet signal) instructed by the user as a mark is generated, and this signal is output to the video signal processing circuit 64. as a result,
The video of the second broadcast channel and the audio and text position marks of the first broadcast channel are displayed.

In this way, by moving the cursor on the selection screen, the mark indicating that the audio / video is selected can be moved, and the audio / video can be arbitrarily combined.

After the user presses the RIGHT key R20 shown in FIG. 14 once from the state of the selection screen shown in FIG.
When the N key D20 is pressed three times, the cursor moves to the position of the video of the fourth broadcast channel (the position of the video of Asahi Broadcasting), and the mark M52 indicating that the video is selected also moves to the position of this cursor. To do. As a result, the mark M52 is displayed at the position of the video of the fourth broadcast channel and the sound and text of the first broadcast channel.

From this state, the user performs the RIGH of FIG.
When the T key R20 is pressed once, the cursor moves one position to the right, and a mark M5 indicating that audio is selected at the audio position of the fourth broadcast channel (audio position of Asahi broadcast)
2 moves. Furthermore, when the user presses the DOWN key D20 of FIG. 14 twice, the cursor moves to the audio position of the sixth broadcast channel (the audio position of the Osaka cable (service mark)) and the audio is selected. Mark M indicating
52 also moves to the position of this cursor. As a result, the fourth
The mark M52 is displayed at the position of the video of the broadcast channel, the audio of the sixth broadcast channel, and the text of the first broadcast channel.

From this state, the user performs the RIGH of FIG.
When the T key R20 is pressed once, the cursor moves one position to the right, and the mark M52 indicating that the text is selected is moved to the position of the text of the sixth broadcast channel (the position of the text of Osaka Cable). (However, there is no Osaka wired text, so selecting text is invalid). Further, when the user presses the UP key U20 of FIG. 14 four times, the cursor moves to the position of the text of the second broadcast channel (the position of the text of Weather), and the mark indicating that the text is selected is also displayed. Move to the cursor position. As a result, marks are displayed at the positions of the video of the fourth broadcast channel, the sound of the sixth broadcast channel, and the text of the second broadcast channel. The display of the selection screen at this time is shown in FIG.

In the selection screen shown in FIG. 15, a mark M60 indicating that the video of Asahi Broadcasting, which is the fourth broadcasting channel, has been selected, and a sound of Osaka Cable, which is the sixth broadcasting channel, have been selected. A mark M61 that indicates and a mark M62 that indicates that the text of the second broadcast channel, Weather, has been selected are shown to the user.

When confirming the combination of video and audio output as the combination shown in FIG. 15, the user presses the confirm key Y in FIG. As a result, the selected video / audio output instruction signal is transmitted from the remote commander 11 to the channel selection device 15.

When the tuning device 15 receives the video / audio output instruction signal from the user, the input signal reception waiting in step S65 of FIG. 11 is canceled.

Then, in the decision of step S66, the type of the instruction signal is determined. In this case, since it is determined that the instruction signal is an instruction signal for confirming the selection, the process branches to step S63.

Now, the process in this case will be described with reference to the flowchart of FIG. 12, which is a detailed process of step S63. In step S40 and step S41, the packet selection circuit 63 is notified to the fourth broadcast. The selection of the video packet signal of the channel (Asahi Broadcasting Co., Ltd.) is instructed, and in step S43 and step S44, the packet selection circuit 6
3 is instructed to select the audio packet signal of the sixth broadcast channel (Osaka Wired), and in step S45 and step S46, the packet selection circuit 63 is instructed to the text packet of the second broadcast channel (Weather). Signal selection is instructed, and in the subsequent step S42, these instructed packet signals are selected, and the video signal processing circuit 64 is selected.
Is output to the audio signal processing circuit 65.

In this way, the user can play the video of the Giant Battle relay program provided by Asahi Broadcasting, the audio of the Enka program provided by Osaka Cable, and the video and audio composed of the text of the weather forecast program provided by Weather. You can receive services at the same time.

At this time, the screen displayed on the display device 13 includes the Asahi video, the text of Weather, and the screen shown in FIG.
The selection screen shown in FIG. 5 is a superimposed screen, and the user can switch to a screen not displaying this selection screen by the display key X in FIG.

When the user presses the display key X in FIG. 14 once, an instruction signal is transmitted to the channel selection device 15 and the waiting for the input signal in step S65 in FIG. 11 is cancelled.

At the subsequent step S66,
The type of the instruction signal is determined, and the instruction signal is determined to be a signal for instructing the end of display of the selection screen. Therefore, in step S67, the control circuit 60 suspends the output of the selection screen data and the video signal processing circuit. Reference numeral 64 denotes the display device 13 for displaying only the video packet signal and the text packet signal.
Output to

Succeedingly, in a step S68, the control circuit 60 carries out a waiting process for receiving an instruction signal for instructing the display of the selection screen.

In this way, it is possible to output an image in which the selection screen is not displayed.

When the user presses the display key X in FIG. 14 once again, the display signal reception waiting in step S68 in FIG. 11 is released, and the process branches to step S64 to display the selection screen. .

Next, the operation when the user changes the broadcast band and the processing corresponding to the operation will be described with reference to the flowchart of FIG.

The user selects the bandwidth UP key U21 shown in FIG.
When the (or DOWN key D21) is pressed once, the waiting for input signal reception in step S66 of FIG. 11 is canceled.

At the subsequent step S66,
Since the type of the instruction signal is determined and the instruction signal is determined to be the instruction signal for tuning the designated broadcast band, step S
Branch to 61, the subsequent processing is executed, and the next (or previous)
The video and audio signal of the first broadcast channel of the broadcast band of is output.

As described above, the user selects the video from the video services provided on different broadcast channels, selects the text from the text services provided on the different broadcast channels, and selects the text on the different broadcast channels. It is possible to select an audio from the provided audio services and to enjoy a combination of the selected images, texts, and audios.

Further, since the type of service provided in the specific broadcast band can be visually grasped, the service provided by the back program can be grasped in an instant.

Further, since the selection result of selecting the video, text and audio can be displayed, it is possible to prevent the user's erroneous operation.

In addition to the above embodiments, the present invention can be modified in various ways.

[0166]

As described above, according to the channel selection device of the first aspect and the channel selection method of the fifth aspect, respectively,
A video of a first broadcast channel signal of the broadcast channel signals, which receives a predetermined one from among a plurality of broadcast channel signals including at least two of a video signal, a corresponding audio signal, and a data signal. Since the signal and the audio signal or the data signal of the second broadcast channel signal different from the first broadcast channel signal are selected, only one selection block of the specific broadcast band is provided, so that the video, the text and the audio are selected. Information can be output in any combination.

[0167] The tuning device according to claim 6 and claim 7.
According to the tuning method described in (1), at least the packet including the list of packets is detected from the broadcast band signal including the packet including the list of the packets of the plurality of broadcast channels transmitted by the broadcast band signal, and the broadcast is performed. Since the signal for indicating whether the signal of the channel is composed of the video signal, the audio signal or the data signal is generated, the service provided in the specific broadcasting band and the selected service can be easily performed. Can be grasped.

[0168] The broadcasting device according to claim 8 and claim 9.
According to the broadcasting method described in 1), the video signal, the audio signal or the data signal of each broadcast channel signal including at least two of at least a video signal, an audio signal corresponding to the video signal, and a data signal are digitized, To generate a packet having a list of packets of a plurality of broadcast channels transmitted in one broadcast band signal, and packetizing a packet of the plurality of broadcast channels and a packet having a list of the packets. 1
Since they are superimposed on one broadcast band signal, each packet signal can be easily extracted.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of a channel selection system using a channel selection device of the present invention.

2 is a block diagram showing a configuration example of a broadcasting device 16 in FIG.

FIG. 3 is a block diagram showing a configuration example of processing circuits 21-1 to 21-m in FIG.

4 is a block diagram showing a configuration example of a channel selection device 15 of FIG.

FIG. 5 is a diagram showing an example of an operation unit of a remote commander 11.

FIG. 6 is a diagram showing a second example of the operation unit of the remote commander 11.

FIG. 7 is a flowchart illustrating an operation of the channel selection device 15 shown in FIG.

FIG. 8 is a flowchart illustrating a subroutine process shown in step S13 of FIG.

9 is a flowchart illustrating a subroutine process shown in step S15 of FIG.

10 is a block diagram showing a second configuration example of the channel selection device 15 of FIG.

11 is a flowchart illustrating an operation of the channel selection device 15 shown in FIG.

FIG. 12 is a flowchart illustrating a process of step S63 of FIG.

13 is an example of a packet selection screen in which an image data signal generated by the channel selection device 15 shown in FIG. 10 is displayed on the display device 13.

FIG. 14 is a diagram showing a third example of the operation unit of the remote commander 11.

15 is a second example of a packet selection screen in which an image data signal generated by the channel selection device 15 shown in FIG. 10 is displayed on the display device 13. FIG.

FIG. 16 is a block diagram showing a configuration example of a conventional channel selection device.

[Explanation of symbols]

 1 remote commander 2 antenna 3 display device 4 speaker 5 channel selection device 6 control circuit 7 band selection circuit 8 video signal processing circuit 9 audio signal processing circuit 11 remote commander 12 antenna 13 display device 14 speaker 15 channel selection device 16 broadcasting device 20 signal Selection circuit 21-1 to 21-m Processing circuit 22-1 to 21-m Modulation circuit 23 Multiplexer 24 Transmission circuit 25 Antenna 40-1 to 40-n Video signal A / D conversion circuit 41-1 to 41-n Audio signal A / D conversion circuit 42-1 to 42-n video encoder 43-1 to 43-n audio encoder 44-1 to 44-n text encoder 45 packet list generation circuit 46 multiplexer 60 control circuit 61 band selection circuit 62 conversion circuit 63 Pa Tsu DOO selection circuit 64 the video signal processing circuit 65 the audio signal processing circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Muramatsu 6-735 Kita-Shinagawa, Shinagawa-ku, Tokyo Within Sony Corporation (72) Inventor Kamoto Muratsubaki 6-7-35, Kita-Shinagawa, Shinagawa-ku, Tokyo No. Sony Corporation (72) Inventor Kazuhiro Akaike 6-735 Kitashinagawa, Shinagawa-ku, Tokyo Sony Corporation (72) Inventor Mika Ito 6-735 Kita-Shinagawa, Shinagawa-ku, Tokyo Soni -Inside the corporation

Claims (9)

[Claims] 1. Receiving means for receiving a predetermined one of a plurality of broadcast channel signals each including at least two of a video signal, an audio signal corresponding to the video signal, and a data signal, and the broadcast channel signal. Selecting means for selecting the video signal of the first broadcast channel signal and the audio signal or the data signal of the second broadcast channel signal different from the first broadcast channel signal, and the selecting means. A tuning device comprising: the output means for outputting the video signal and the audio signal or the data signal. 2. A generation for generating a signal for indicating whether the signal of the broadcast channel is composed of the video signal, the audio signal or the data signal, and a signal for displaying a selection result by the selection means. The tuning device according to claim 1, further comprising means. 3. The video signal, audio signal or data signal of each broadcast channel signal is digitized and packetized, and a plurality of the broadcast channel signals are transmitted by one broadcast band signal, The channel selection device according to claim 1, wherein the selection means selects a predetermined one of the packets. 4. A detection means for detecting a previous period packet including a list of previous period packets from at least the broadcast band signal including a packet having a list of packets of the broadcast channel transmitted by the broadcast band signal. The channel selection device according to claim 1, wherein: 5. A predetermined signal is received from a plurality of broadcast channel signals each including at least two of a video signal, an audio signal corresponding to the video signal, and a data signal, A video signal of a first broadcast channel signal and an audio signal or data signal of a second broadcast channel signal different from the first broadcast channel signal are selected, and the selected video signal and audio signal or data signal are selected. A channel selection method characterized by outputting. 6. Detecting means for detecting a previous-stage packet including a list of previous-stage packets from the broadcast band signal including at least a packet containing a list of packets of a plurality of broadcast channels transmitted by the broadcast-band signal, Generating means for generating a signal for indicating whether the signal of the broadcast channel is composed of the video signal, the audio signal or the data signal, corresponding to the detection result of the detecting means. And a tuning device. 7. A first-stage packet including a list of previous-stage packets is detected from the broadcast-band signal including at least a packet containing a list of packets of a plurality of broadcast channels transmitted by the broadcast-band signal, and a detection result thereof is detected. Corresponding to, the signal of the broadcast channel,
A channel selection method, characterized in that a signal for displaying a signal for displaying which of the video signal, the audio signal and the data signal is displayed is generated. 8. A packet for digitizing and packetizing the video signal, audio signal or data signal of each broadcast channel signal including at least two of at least a video signal, a corresponding audio signal and a data signal, respectively. Means, generating means for generating a packet having a list of packets of the plurality of broadcast channels transmitted by one broadcast band signal, and packets of the plurality of broadcast channels packetized by the packet means, A broadcasting apparatus comprising: a superimposing unit that superimposes the packet generated by the generating unit on one broadcast band signal. 9. The video signal, the audio signal or the data signal of each broadcast channel signal including at least two of at least a video signal, an audio signal corresponding to the video signal, and a data signal are digitized, packetized, and A packet having a list of packets of the plurality of broadcast channels transmitted by a broadcast band signal is generated, and the packetized packets of the plurality of broadcast channels and the packet having the list are included in one broadcast. A broadcasting method characterized by being superimposed on a band signal.