JP2003319274A - Digital broadcasting receiver and channel selection method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily switch TV services to be outputted in the case of a plurality of TV services exist in the same transport stream. <P>SOLUTION: When a channel being selected at present has a plurality of TV services, the same channel selection signal as the channel being selected at present is inputted with a remote controller 20, and thereby an output means 14 switches TV services to be outputted to an output device 30. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast receiver for receiving digital broadcasts, and more particularly to a digital broadcast receiver for receiving a transport stream having a plurality of services.

[0002]

2. Description of the Related Art Digital broadcasting is popular for its high number of channels and high image quality, and is rapidly spreading in recent years.

In digital broadcasting, it is also possible for a broadcasting station to provide a plurality of television services with the same transport stream, such as broadcasting three normal programs instead of broadcasting one high-definition program. is there.

When there are a plurality of television services in the same transport stream, conventionally, when the service IDs of other television services in the same transport stream are not preset, a three-digit service is provided. After inputting the ID and pressing the channel selection button, the desired TV service was selected.

In digital broadcasting, there is also a service in which a broadcasting station provides multi-view information such as multi-view television. When a plurality of pieces of visual field information are present in the same transport stream, conventionally, by pressing an image switching button of a remote controller or the like, sub-fields such as different visual field information grouped by a desired component group descriptor are displayed. I was able to select a service.

[0006]

However, as described above, when there are a plurality of services in the same transport stream, there is a problem that it is necessary to perform several steps of operation with several kinds of buttons, which is troublesome. It was

The present invention has been made in view of the above circumstances, and an object thereof is to provide a digital broadcast receiver capable of easily selecting a plurality of services. Another object of the present invention is to provide a tuning method that allows a plurality of services to be easily selected.

[0008]

In order to solve the above problems, the present invention is directed to a digital broadcasting receiver for receiving digital broadcasting, in which a tuning signal receiving means for receiving a tuning signal from a user, and the above tuning station are provided. A broadcast receiving means for selecting a broadcasting station according to a signal to receive the digital broadcast; a separating means for separating each of the television services when a plurality of TV services exist in the same transport stream; An output unit that outputs the selected television service and outputs the other television service existing in the transport stream when the same channel selection signal is received. Provided.

According to the above configuration, when a plurality of TV services are present in the same transport stream, the TV service to be output is switched by inputting the same tuning signal as that of the station being received.

Further, in a digital broadcasting receiver for receiving digital broadcasting, a tuning signal receiving means for receiving a tuning signal from a user and a broadcasting station for receiving the digital broadcasting according to the tuning signal. When there are a plurality of field-of-view information grouped in the same transport stream, the broadcast receiving means that separates the field-of-view information and the separating means that outputs the separated field-of-view information An output unit that outputs the other field-of-view information that has been grouped when the channel selection signal is received is provided.

According to the above configuration, when a plurality of field-of-view information grouped in the same transport stream exists, the field-of-view information to be output is switched by inputting the same tuning signal as the station being received. .

Further, in a digital broadcasting receiver for receiving a digital broadcasting, a tuning signal receiving means for receiving a tuning signal from a user, and a broadcasting station for tuning the received broadcasting signal according to the tuning signal are received. And a separating means for separating each of the TV services or the view information when there are a plurality of TV services or a plurality of grouped view information in the same transport stream. An output unit that outputs the television service or the field-of-view information and outputs the television-service or the other grouped field-of-view information when the same channel selection signal is received. A broadcast receiver is provided.

According to the above configuration, when a plurality of field-of-view information grouped in the same transport stream exists, the same channel selection signal as that of the station being received is input to output the TV service or the field-of-view. Switch information.

Further, in a tuning method for selecting a digital broadcast, a tuning signal from a user is received, a broadcasting station is selected according to the tuning signal, the digital broadcasting is received, and the same transport is performed. When a plurality of TV services are present in the stream, the TV services are separated for each TV service, the separated TV services are output, and when the same tuning signal is received, the other TV services are present in the transport stream. There is provided a channel selection method characterized by outputting the television service of.

According to the above method, when a plurality of TV services exist in the same transport stream, the TV service to be output is switched by inputting the same tuning signal as that of the station being received.

Further, in the tuning method for selecting a digital broadcast, a tuning signal from a user is received, a broadcasting station is selected according to the tuning signal, the digital broadcasting is received, and the same transport is performed. When a plurality of field-of-view information grouped in a stream is present, the field-of-view information is separated, the separated field-of-view information is output, and when the same channel selection signal is received, the transport stream A channel selection method is provided, which is characterized by outputting other visual field information existing in the.

According to the above method, when a plurality of field-of-view information grouped in the same transport stream exists, the field-of-view information to be output is switched by inputting the same tuning signal as the station being received. .

Further, in a tuning method for selecting a digital broadcast, a tuning signal from a user is received, a broadcasting station is selected according to the tuning signal, the digital broadcasting is received, and the same transport is performed. When there are a plurality of TV services or grouped view information in the stream, the TV service or view information is separated for each TV service, and the separated TV service or view information is output and the same A channel selection method is provided which, when receiving the channel selection signal, outputs the television service or the other field-of-view information grouped in the transport stream.

According to the above method, when a plurality of field-of-view information grouped in the same transport stream exists, the same channel selection signal as that of the station being received is input to output the TV service or the field-of-view. Switch information.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a digital broadcast receiver according to an embodiment of the present invention.

The digital broadcast receiver 10 includes a tuning signal receiving means 11 for receiving a tuning signal transmitted from a user via a remote controller (hereinafter referred to as a remote controller) 20, etc., and a broadcasting station according to the tuning signal. Broadcast receiving means 12 for selecting a channel to receive a digital broadcast, and a separating means 13 for separating a plurality of TV services and a plurality of pieces of visual field information in the same transport stream.
And the separated TV service and output means 14 for outputting the visual field information to the output device 30.

The operation of the digital broadcast receiver 10 will be described below. Note that, here, a case where the received digital broadcast has a plurality of television services in the same transport stream will be described.

When the user selects a channel with the remote controller 20, the channel selection signal receiving means 11 receives a channel selection signal transmitted from the remote controller 20. The channel selection signal is transmitted to the broadcast receiving means 12, the broadcast receiving means 12 selects a broadcast station according to the channel selection, and receives a digital broadcast radio wave from the selected broadcast station via an antenna (not shown). The received broadcast wave is demodulated, and data in the transport stream format is obtained. The transport stream has a plurality of television services. The separating means 13 separates these and inputs them to the output means 14.

At this time, when the same channel selection signal is input again by the remote controller 20, the channel selection signal receiving means 11 receives this channel selection signal and outputs the television service from the output means 14 to the output device 30. Switch. For example, in the case where there are three TV services as shown in FIG. 1, when the first tuning operation is set to output TV service 1, when the same tuning signal is input again, The output unit 14 outputs the TV service 2, and when the same channel selection signal is input again, the output unit 14 outputs the TV service 3 to the output device 30. Here, when the same channel selection signal is further input, the output means 14 outputs the television service 1 to the output device 30 again.

FIG. 2 is a state transition diagram at the time of a channel selection operation in a channel having a plurality of television services. Here, 8ch selected by the user is 200ch, 201c
A case will be described where there are three television services, h and 202ch. Here, the TV service 1 of FIG. 1 and the TV service 2 of FIG.
1ch and TV service 3 are compatible with 202ch.

T1: When the user presses the one-touch button corresponding to 8ch on the remote controller 20, first, 200ch is output by the output means 14 and the output device 30.
You can watch it at. Here, when the 8ch is pressed again, the state transits to the state T2.

T2: In the state T1, since channel 8 is pressed, the next channel 201 is output. Here, 8 more
When ch is pressed, the state transits to state T3. T3: Since 8ch is pressed again in the state T2,
The next 202 ch is output. Here, when 8ch is further pressed, the state returns to the state T1.

The TV service output when the channel having a plurality of TV services is first selected by the remote controller 20 refers to the service ID assigned to each TV service, and the service ID is the most appropriate. A small television service may be output, or may be set in advance according to the user's request.

The order in which the same channel selection signal is received and a plurality of television services are switched may be output in the order of service ID, or may be set according to the user's request.

In the above, the case where a plurality of TV services exist in the same transport stream has been described, but even one TV service is grouped in the transport stream like a multi-view TV. In the case of a service that includes a plurality of pieces of visual field information, the same operation is performed. That is, when the same channel selection signal is input by the user, the visual field information output to the output device 30 is switched, and the image viewed from a different visual field is displayed on the screen.

As described above, since the same channel selection signal is input to the user in order to switch each service to be output when a plurality of services exist in the same transport stream, for example, the remote controller 20 Easy to do with one button.

Details of the embodiments of the present invention will be described below. FIG. 3 is a hardware configuration diagram of the digital broadcast receiver according to the embodiment of the present invention.

The digital broadcast receiver 100 according to the embodiment of the present invention includes a front end 101 for demodulating digital broadcast radio waves received by an antenna 110, a descrambler 102 for descrambling a pay broadcast, and the like.
Demultiplexer 103 for separating the transport stream into video data packets, audio data packets, etc.
And an AV (Audio-Visu) that decodes the encoded signal.
al) decoder 104 and GUI (Graphical User Inter
face) The video signal is combined with the decoded video signal to create a TV
(TeleVision) Graphics 105 transmitted to 120
And a CPU (Central Processing) that controls each system.
Unit) 106, a memory 107 for storing display data such as fonts and temporarily storing data controlled by the CPU 106, and a channel selection signal transmitted by infrared rays from the remote controller 130 to be received and converted into a remote controller code.
And a front panel 108 that transmits the signal to the H.06.

The operation of the digital broadcast receiver 100 will be described below. When a channel is selected by the user operating the remote controller 130, the channel selection signal is received by the front panel 108, converted into a remote controller code, and input to the front end 101 via the CPU 106. In the front end 101, a broadcasting station is tuned in accordance with the inputted tuning signal, and a broadcast wave transmitted from the selected broadcasting station is received by an antenna 110 and demodulated. MP obtained here
A transport stream of EG (Moving Picture Experts Group) 2 is input to the descrambler 102. The descrambler 102 scrambles the CPU 10 if there is scrambled data by pay broadcasting or the like.
The transport stream, which is descrambled and descrambled under the control of 6, is input to the demultiplexer 103. Under the control of the CPU 106, the demultiplexer 103 converts the transport stream into video data packets, audio data packets, and SI (Service Informatio).
n) Separate into data packets. The SI data packet has an electronic program guide (EPG: Electronic Program G).
uide) information is included. Here, the video data packet and the audio data packet are the AV decoder 104.
And the SI data packet is transmitted to the CPU 106. The AV decoder 104 transmits the video signal and the video signal decoded from the audio data packet and the audio signal to the TV 120 and outputs them. Further, the graphics 105 creates a GUI video signal such as EPG according to the drawing command transmitted from the CPU 106, and outputs the GUI video signal together with the video signal to the TV 120.

In the following, in the same transport stream received and demodulated, a plurality of TV services, a plurality of view information grouped into a multi-view TV, etc.
The operation of the digital broadcast receiver 100 when there are a plurality of services will be described.

In digital broadcasting, three normal broadcasting programs can be included in the same transport stream instead of the high definition television programs. In the case of such a channel, the user presses the same channel button on the remote controller 130 a plurality of times to switch the service to be decoded by the AV decoder 104 and output to the TV 120.

The channel selection process in the digital broadcast receiver 100 at this time will be described with reference to a flowchart. Figure 4,
FIG. 5 is a flowchart of the channel selection method of the present invention.

For simplification, the channel is shown as ch and the transport stream is shown as TS in the figure. S1: Channel selection signal reception When the user selects a channel with the remote controller 130, the front panel 108 receives the channel selection signal and C
Under the control of the PU 106, it is converted into a remote control code and transmitted to the front end 101.

S2: Determining Whether Channel Selected and Current Channel Are Same Here, the CPU 106 determines whether the channel selected by the user is the same as the channel currently being received by the front end 101. Determine whether or not. Here, if they are the same, the process proceeds to step S3, and if they are different, step S1.
Go to 4.

S3: Judgment as to whether or not the current channel is a plural television service Here, under the control of the CPU 106, it is a packet of the transport stream separated by the demultiplexer 103, and is described in the packet of PID = 0. PAT
By referring to (Program Association Table), it is determined whether or not the current channel has a plurality of television services. If the channel has a plurality of television services, the process proceeds to step S4. If the channel does not have the plurality of television services, the process proceeds to step S7.

S4: Judgment as to whether or not the service ID of the current channel is the maximum in the same transport stream The CPU 106 compares the service IDs associated with a plurality of TV services and finds that the service ID of the current channel is the same. , It is determined whether or not it is the maximum in the same transport stream. Here, if it is the maximum service ID, the process proceeds to step S5, and if it is not the maximum, the process proceeds to step S6.

S5: Select the smallest service ID among the services in the same transport stream In step S4, the service ID of the selected service in the current channel is determined to be the maximum, so CP
Under the control of U106, the service with the minimum service ID is selected, decoded, output to the TV 120, and the processing ends.

S6: Next service ID of the current channel
In the selection step S4, it is determined that the service ID of the service being selected is not the maximum in the current channel, so the service having the next largest service ID is selected under the control of the CPU 106, and the decoded service is output to the TV 120. Then, the process ends.

S7: Determining Whether Current Channel Is Multiview Television Here, the CPU 106 has a multiview having a plurality of sub-services in which the current channel provides a plurality of view information grouped by component descriptors. Determine whether it is a TV. Here, in the case of a multi-view television, the process proceeds to step S8, and otherwise, step S1.
Go to 4.

S8: Judgment as to whether or not the current channel is the main service CPU 106 judges whether or not the currently selected channel is the main service for providing the main visual field information in the multi-view television. However, the main service must be selected when selecting or starting a multi-view TV. If it is the main service, the process proceeds to step S9. If it is not the main service, the process proceeds to step S10.

S9: Select first sub-service Since it is determined in step S8 that the current channel is the main service, under the control of the CPU 106, the visual field information grouped by the component descriptor is selected. The sub service that is the first view information is selected, decoded, output, and displayed on the TV 120.

S10: It is judged whether the current service is the first sub-service. In step S8, when it is judged that the current channel is the sub-service, the CPU 106 sets the sub-service to 1 Determine if it is the second sub-service. Here, if it is the first sub-service, the process proceeds to step S11, and if it is not the first sub-service,
It proceeds to step S13.

S11: Judgment on whether or not there is a second sub service The CPU 106 judges whether or not there is a second sub service grouped by the component descriptor of the multi-view television. Here, if there is a second sub service, the process proceeds to step S12, and if not, the process proceeds to step S13.

S12: Select the second sub-service Under the control of the CPU 106, the second sub-service A
The V decoder 104 decodes and outputs to the TV 120 for display. After that, the process ends.

S13: Since there is no other service for selecting and selecting the main service, the main service is selected again under the control of the CPU 106, and the AV decoder 10 is selected.
4, and outputs to the TV 120 for display. After that, the process ends.

S14: Select the preset channel, select the preset channel as it is, and
Under the control of No. 6, it is decoded by the AV decoder 104, output to the TV 120, and displayed. After that, the process ends.

As described above, in the case of a channel in which a plurality of services exist in the same transport stream,
Since the user is made to input the same channel in order to switch each service to be output, it is possible to easily switch the service with one button of the remote controller 130, for example.

In the above description, the number of television services and multi-view television services existing in the same transport stream is three, but the number is not limited to three.

[0054]

As described above, according to the present invention, when a plurality of TV services exist in the same transport stream, the same channel selection signal is input to switch the TV services. Move the finger from the button corresponding to the selected channel on the remote controller that was pressed first, without performing the complicated remote controller operation that involves several steps when searching for the desired service from among the services It is possible to select the desired service by simply pressing continuously without using.

Similarly, in the case of a multi-view television having a plurality of field-of-view information grouped in the same transport stream, the same channel selection signal is input so that the sub-service corresponding to each field-of-view information is input. Since it was switched, it corresponds to the channel selection on the remote control that was pressed first without performing the complicated remote control operation of several steps when searching and selecting the desired service from multiple services The desired service can be selected by simply pressing the button continuously without moving the finger.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a digital broadcast receiver according to an embodiment of the present invention.

FIG. 2 is a state transition diagram at the time of a channel selection operation in a channel having a plurality of television services.

FIG. 3 is a hardware configuration diagram of the digital broadcast receiver according to the embodiment of the present invention.

FIG. 4 is a flowchart of a channel selection method of the present invention.

FIG. 5 is a flowchart of a channel selection method of the present invention.

[Explanation of symbols]

10 ... Digital broadcast receiver, 11 ... Channel selection signal receiving means, 12 ... Broadcast receiving means, 13 ... Separating means, 14 ...
... output means, 20 ... remote control, 30 ... output device

Claims (6)

[Claims] 1. A digital broadcasting receiver for receiving digital broadcasting, and a tuning signal receiving means for receiving a tuning signal from a user, and a broadcasting station selected according to the tuning signal to receive the digital broadcasting. Broadcast receiving means for separating, when there are a plurality of TV services in the same transport stream, separating means for separating each of the TV services, and outputting the separated TV services to obtain the same channel selection signal. A digital broadcast receiver, comprising: an output unit that outputs another television service existing in the transport stream when the digital broadcast is received. 2. A digital broadcasting receiver for receiving digital broadcasting, and a tuning signal receiving means for receiving a tuning signal from a user, and a broadcasting station selected according to the tuning signal to receive the digital broadcasting. Broadcast receiving means for separating, when there is a plurality of field-of-view information grouped in the same transport stream, a separation means for separating each field-of-view information, and outputting the separated field-of-view information An output unit that outputs the other field-of-view information that has been grouped when the tuning signal is received. 3. A digital broadcasting receiver for receiving digital broadcasting, and a tuning signal receiving means for receiving a tuning signal from a user, and a broadcasting station selected according to the tuning signal to receive the digital broadcasting. Broadcast receiving means and separating means for separating each of the TV services or the view information when there are a plurality of TV services or a plurality of grouped view information in the same transport stream, and An output unit that outputs the television service or the field-of-view information and, when the same channel selection signal is received, outputs the television service or the other field-of-view information that has been grouped. Broadcast receiver. 4. A tuning method for selecting digital broadcasting, wherein a tuning signal from a user is received, a broadcasting station is selected according to the tuning signal to receive the digital broadcasting, and the same transport is used. If a plurality of TV services are present in the stream, the TV services are separated for each of the TV services, the separated TV services are output, and when the same channel selection signal is received, the other TV services are present in the transport stream. Channel selection method characterized by outputting the TV service of. 5. A channel selection method for selecting a digital broadcast, receiving a channel selection signal from a user, selecting a broadcast station according to the channel selection signal, receiving the digital broadcast, and using the same transport. When there is a plurality of field-of-view information grouped in a stream, the field of view information is separated and the separated field-of-view information is output, and when the same channel selection signal is received, the transport stream A method of selecting a channel characterized by outputting other visual field information existing in the. 6. A tuning method for selecting digital broadcasting, wherein a tuning signal from a user is received, a broadcasting station is selected according to the tuning signal to receive the digital broadcasting, and the same transport is used. When a plurality of TV services or a plurality of view information grouped in a stream exist, the TV service or view information is separated for each TV service, and the separated TV service or the view information is output. A channel selection method, wherein when the channel selection signal is received, the television service existing in the transport stream or the other field-of-view information grouped is output.