JP2004015499A - Digital broadcast receiving apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiving apparatus which can recognize a broadcasting network current in reception and another receivable broadcasting network at the same time and enables the broadcasting network currently in reception to be switched to the other receivable broadcasting network through easy operation. <P>SOLUTION: The apparatus is equipped with a demodulation part 1 which generates a transport stream (TS) by demodulating a received signal and a decoder part 2 which generates a video signal and an audio signal by decoding the TS and further provided with a memory 4(1) which stores network information of a plurality of receivable broadcasting networks, operation equipment 10 for selectively setting various states, a display part 9 which displays video, information, etc., and a control part 3; and the control part 3 supplies network information stored in the memory 4(1) to the display part 9 through the selection of the operation equipment 10 to list and display the plurality of receivable broadcasting networks, a choice among the plurality of receivable broadcasting networks which are listed and displayed is made by the operation equipment 10, and the reception is switched to the other broadcasting network. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a digital broadcast receiving apparatus, and more particularly to a digital broadcast receiving apparatus capable of receiving digital broadcasts on a plurality of broadcast networks and displaying a list of receivable broadcast networks.
[0002]
[Prior art]
In general, digital broadcasting is divided into components called a broadcasting network according to a broadcasting satellite to be used and a broadcasting company serving as a business entity. These broadcast networks are identified by network IDs assigned to the respective broadcast networks.
[0003]
At the time that BS digital broadcasting was started, there was only one broadcasting network. However, due to the start of CS digital broadcasting and terrestrial digital broadcasting, a plurality of broadcasting networks are now available. Network exists. For this reason, a digital broadcast receiving apparatus that receives a digital broadcast is required to have a receiving function that can correspond to each of the plurality of broadcast networks.
[0004]
By the way, in each broadcast network, a channel number (service ID) of a program being broadcast on its own broadcast network is individually set, but in different broadcast networks, the same channel number (service ID) is set. May be In addition, the charge unit of the pay broadcast is often charged for each broadcast network. For this reason, the user needs to recognize which broadcast network the broadcast network of the program currently being viewed is.
[0005]
In order to satisfy such a need, there has been proposed a digital broadcast receiving apparatus capable of recognizing which broadcast network is the broadcast network of a program currently being viewed. One of the digital broadcast receiving apparatuses has been proposed. There is a digital broadcast receiving device disclosed in Japanese Patent Application Laid-Open No. H11-55587.
[0006]
The digital broadcast receiving apparatus disclosed in Japanese Patent Application Laid-Open No. H11-55587 is provided with a network information buffer that stores broadcast network information that is currently being viewed, and is used for displaying a program table or program information on a display. , Display the broadcast network name of the program currently being viewed, display the network logo corresponding to the broadcast network name, or change the background color in the program information display for each receivable broadcast network. By changing the character color or graphic color of the broadcast network name, etc., the user can easily recognize the broadcast network of the program currently being viewed.
[0007]
[Problems to be solved by the invention]
In the digital broadcast receiving apparatus disclosed in Japanese Patent Application Laid-Open No. H11-55587, only the network information on the broadcast network of the currently viewed program is to be displayed. Although the broadcast network can be easily recognized, other broadcast networks that can be received by the digital broadcast receiving apparatus cannot be easily recognized. When it is desired to switch from the reception of a broadcast network to the reception of another receivable broadcast network, it is not always easy to switch the broadcast network.
[0008]
The present invention has been made in view of such a technical background, and an object of the present invention is to be able to simultaneously recognize a broadcast network currently being received and another broadcast network that can be received, and to transmit the broadcast network from the currently received broadcast network. An object of the present invention is to provide a digital broadcast receiving apparatus capable of switching to another receivable broadcast network by a simple operation.
[0009]
[Means for Solving the Problems]
In order to achieve the object, a digital broadcast receiving apparatus according to the present invention receives a digital broadcast in a plurality of broadcast networks, demodulates a received signal to generate a transport stream, and decodes the transport stream. Information storage means for storing network information for a plurality of receivable broadcast networks, an operating device for selecting and setting various states, and a video and audio signal. A display unit for displaying information and the like, and a control unit for controlling the operation of the entire device are provided, and the control unit reads out the network information stored in the information storage unit by selecting an operation device, and displays the obtained network information A list of a plurality of broadcast networks that can be supplied to the display unit and received can be displayed in a list. Comprising means for switching to the reception of the other broadcast networks by selecting a plurality of broadcast networks operating device.
[0010]
According to the above means, an information storage means for storing network information for a plurality of receivable broadcast networks and an operation device for selecting and setting various states are provided. When a list display of broadcast networks is selected by operating the operation device, control is performed. The unit reads out the network information stored in the information storage means and supplies the obtained network information to the display unit to display a list of a plurality of receivable broadcast networks. The displayed broadcast network and other receivable broadcast networks are displayed at the same time, making it possible to easily recognize not only the currently received broadcast network but also other receivable broadcast networks. Further, when a plurality of receivable broadcast networks are displayed on the display unit, when it is desired to switch from the currently received broadcast network to another broadcast network, if a desired other broadcast network is selected by operating the operation device, The reception is switched to the selected broadcast network, and the broadcast network to be received can be switched by a simple operation.
[0011]
In this case, the reception switching to another broadcast network in the means is performed by moving a cursor to a plurality of broadcast network names displayed in a list, or a display corresponding to the plurality of broadcast network names displayed in a list, respectively. This is performed by selecting the broadcast network switching key.
[0012]
With such a configuration, when displayed on a plurality of receivable broadcast networks on the display unit, when it is desired to switch from the currently received broadcast network to another broadcast network, another desired operation is performed by operating the operation device. If a broadcast network is selected, reception switching to the selected broadcast network is performed, and switching of the broadcast network to be received can be performed by a simple operation.
[0013]
Further, the control unit in the above-mentioned means, when a card-type external device capable of receiving one broadcast network is newly connected to a card slot or the like, and a receivable broadcast network is added, the card-type external device receives the broadcast network. Network information for possible broadcast networks is additionally stored in the information storage means, and a card-type external device that can receive one broadcast network connected to a card slot or the like is removed, thereby reducing the number of broadcast networks that can be received. It is preferable that, when performed, the network information for the broadcast network receivable by the external device be deleted from the storage content of the information storage means.
[0014]
According to the above configuration, when a card-type external device capable of receiving one broadcast network is attached to or removed from a card slot or the like, addition of network information to the receivable broadcast network stored in the information storage means or Since deletion is performed, network information for receivable broadcast networks can always be stored in the information storage means without omission, and a plurality of broadcast networks receivable at that time can be displayed on the display unit at the same time. it can.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
FIG. 1 shows a first embodiment of a digital broadcast receiving apparatus according to the present invention, and is a block diagram showing a main configuration of the digital broadcast receiving apparatus.
[0017]
As shown in FIG. 1, the digital broadcast receiving apparatus according to the first embodiment selects a received digital broadcast signal, performs demodulation and error correction according to the signal form of the digital broadcast signal, and multiplexes the multiplexed digital data. , A transport stream (TS) decoder 2 for decoding multiplexed digital data output from the tuner and demodulator 1 to extract a transport stream, and control for controlling the entire apparatus. A storage unit (CPU) 3, a memory 4 for storing data formed by the transport stream decoder 2, a network information storage unit 4 (1) that is a part of the memory 4 and stores network information, The transport stream output from the stream decoder 2 is decoded and audio and video signals are decoded. , A graphics generator 6 for forming character display function (OSD) information on a video display unit 9, a video signal output from the audiovisual decoder 5, and a graphics generator A mixing unit 7 for mixing the character display function information output from the mixing unit 6, an audio output unit 8 for processing an audio signal output from the audiovisual decoder 5, and a video for displaying the mixed video signal output from the mixing unit 7. The display unit 9 includes an operation device 10 such as a remote control device, and a reception signal input terminal 11 to which a digital broadcast signal received by an antenna is applied.
[0018]
The tuner and demodulator 1 has an input terminal connected to the reception signal input terminal 10 and an output terminal connected to an input terminal of the transport stream decoder 2. The transport stream decoder 2 has an output terminal connected to the input terminal of the audio-visual decoder 5, and a control terminal connected to a first control terminal of the control unit 3. The control unit 3 has a second control terminal connected to the memory 4, a third control terminal connected to the operation device 10, and an output terminal connected to an input terminal of the graphics generation unit 6. The audio-visual decoder 5 has an audio signal output terminal connected to an input terminal of the audio output unit 8, and a video signal output terminal connected to a first input terminal of the mixing unit 7. The output terminal of the graphics generation unit 6 is connected to the second input terminal of the mixing unit 7. The output of the mixing unit 7 is connected to the input of the video display unit 9.
[0019]
The digital broadcast receiving apparatus according to the first embodiment having the above configuration operates as follows.
[0020]
When a digital broadcast signal received by an antenna (not shown) is supplied to a tuner and demodulation unit 1 through a reception signal input terminal 10, the tuner and demodulation unit 1 tunes to the received signal and then performs a digital broadcast signal , And demodulates and corrects the error according to the signal form described above, and supplies the multiplexed digital data to the subsequent transport stream decoder 2. The transport stream decoder 2 extracts a transport stream from the supplied multiplexed digital data, and supplies the extracted transport stream to the next audiovisual decoder 5. The audio-visual decoder 5 decodes the supplied transport stream to form an audio signal and a video signal, supplies the audio signal to the next audio output unit 8, and outputs the video signal to the next mixing unit 7. Supply.
[0021]
At this time, if a command to display the broadcast network list is issued by operating the operation device 10, the control unit 3 reads the network information stored in the network information storage unit 4 (1) in response to the command. The read network information is supplied to the graphics generation unit 6 to be converted into character display information suitable for display, and this character display information is supplied to the mixing unit 7. The mixing unit 7 mixes the video signal output from the audio-visual decoder 5 and the character display information output from the graphics generation unit 6, and supplies the obtained mixed video signal to the next video display unit 9. . At this time, a list of receivable broadcast networks is displayed on the video display unit 9 together with the received video information.
[0022]
On the other hand, when the command for displaying the broadcast network list is not issued without any operation of the operation device 10, the character display information is not output from the graphics generation unit 6, so that only the received video information is displayed on the video display unit 9. Is displayed.
[0023]
Here, FIG. 2 is an explanatory diagram showing an example of network information stored in the form of an information table in the network information storage unit shown in FIG.
[0024]
As shown in FIG. 2, the network information includes a broadcast network ID and a broadcast network name. The network ID is set to a value defined by a standard, for example, 4, 8 or the like. The broadcast network name is a set name based on the standard, for example, BS digital broadcast, terrestrial digital broadcast, etc. May be set.
[0025]
FIG. 3 is a flowchart showing a process of displaying a list of receivable broadcast networks in the digital broadcast receiving apparatus shown in FIG.
[0026]
FIG. 4 is an explanatory diagram showing an example of a list of broadcast network names created by the control section 3 of the digital broadcast receiving apparatus shown in FIG. 1 and displayed on the video display section.
[0027]
The operation of displaying a list of receivable broadcast networks will be described with reference to the flowchart shown in FIG. In this case, it is assumed that a broadcast network name corresponding to a broadcast network ID of a broadcast network receivable by the digital broadcast receiving apparatus is set and stored in the network information storage unit 4 (1) according to the standard.
[0028]
First, in step S1, the control unit 3 determines whether or not an instruction to display a list of broadcast networks has been received by a user operating the operation device 10. When it is determined that the command for displaying the list of broadcast networks has been received (Y), the process proceeds to the next step S2. On the other hand, when it is determined that the command for displaying the list of broadcast networks has not been received (Y), this step is performed. S1 is repeatedly executed.
[0029]
Next, in step S2, the control unit 3 acquires a broadcast network name corresponding to those IDs from the broadcast network information storage unit 4 (1) based on the receivable broadcast network IDs.
[0030]
Next, in step S3, the control unit 3 creates a list of the acquired broadcast network names, for example, in a form as shown in FIG. 4, and supplies the created contents to the graphics generation unit 6. At this time, the graphics generation unit 6 displays the list of broadcast network names as shown in FIG. 4 so that the broadcast network of the currently received broadcast network can be identified. The setting is made such that the background color of the name is different from the background color of the other broadcast network names, for example, the cursor is superimposed.
[0031]
Subsequently, in step S4, the control unit 3 forms a mixed video signal in which a list of broadcast network names output from the graphics generation unit 6 is superimposed on the video signal output from the audio-visual decoder 5 in the mixing unit 7, and The mixed video signal is supplied to the video display unit 9, and a list of receivable broadcast networks is displayed on the video display unit 9 and presented to the user. When a list of broadcast network names of receivable broadcast networks is displayed in a list on the video display unit 9, the cursor is overlaid on the broadcast network name of the currently received broadcast network, and which broadcast network is currently being received. It is possible to recognize whether there is.
[0032]
The cursor superimposed on the broadcast network name can be moved by operating the operation device 10 to superimpose the cursor on another broadcast network name. Furthermore, after the cursor is overlaid on another broadcast network name, by operating the operation device 10 again, it is possible to switch to the reception state of the broadcast network of another broadcast network name on which the cursor is overlaid.
[0033]
In this case, the switching from the reception state of one broadcast network to the reception of another broadcast network is performed by providing a broadcast network switch key and selecting the broadcast network switch key instead of moving the cursor. It can be carried out.
[0034]
Here, FIG. 5 is a schematic diagram showing a broadcast network switching key for selecting switching of a broadcast network to be received.
[0035]
As shown in FIG. 5, the broadcast network switching keys K1, K2, and K3 are provided for each receivable broadcast network in the digital broadcast receiving apparatus, and are respectively colored differently. Keys K1, K2, and K3 are set with remote control key IDs unique to the keys.
[0036]
FIG. 6 is an explanatory diagram showing an example of network information stored in a network information storage unit in the form of an information table and used together with a broadcast network switching key.
[0037]
As shown in FIG. 6, the network information according to the present example includes a broadcast network ID, a broadcast network name, and a remote control key ID. The network ID is set to a value defined by a standard, for example, 4, 8 or the like. The broadcast network name is a set name based on the standard, for example, a BS digital broadcast or a terrestrial digital broadcast. Values unique to the network switching keys K1, K2, K3, for example, 0, 1, etc. are set.
[0038]
FIG. 7 is an explanatory diagram showing an example of a list of broadcast network names having a broadcast network switching key created by the control unit of the digital broadcast receiving apparatus and displayed on the video display unit.
[0039]
As shown in FIG. 7, when a list of a plurality of receivable broadcast networks is displayed on the video display unit 9, the broadcast network switching keys K1, K2, and K3 are combined at positions corresponding to the plurality of broadcast network names. Is displayed.
[0040]
By the way, as shown in FIG. 7, when the broadcast network name and the broadcast network switching keys K1, K2, K3 are simultaneously displayed, the same operation as the above-mentioned flowchart shown in FIG. List display is possible. In the case of this operation, the control unit 3 uses the remote control key ID stored in the network information storage unit 4 (1) to set the broadcast network switching keys K1, K2, and K3 when creating the broadcast network list display. create.
[0041]
When a list of broadcast network names and broadcast network switching keys K1, K2, and K3 is displayed on the video display unit 9, the position of a cursor overlapping the broadcast network switching keys K1, K2, and K3, for example, the broadcast network switching key K2 If the cursor is located above, it becomes possible to immediately recognize that the digital broadcast receiving apparatus is receiving the CS digital broadcast corresponding to the broadcast network switching key K2.
[0042]
The cursor overlapping the broadcast network switching key K2 can be moved by operating the operation device 10 so that the cursor overlaps the broadcast network switching keys K1 and K3 in another broadcast network.
[0043]
Further, after the cursor is overlapped with the broadcast network switching keys K1 and K3 in another broadcast network, for example, the broadcast network switch key K1, the operating device 10 is operated again to change the cursor to another broadcast network. In this case, it is possible to switch to a state of receiving BS digital broadcast.
[0044]
In the example described here, the broadcast network switching keys K1, K2, and K3 are differently colored so that the broadcast network switching keys K1, K2, and K3 are distinguished from each other. Instead of changing the coloring state of the network switching keys K1, K2, and K3, the shape of the broadcasting network switching keys K1, K2, and K3 may be changed, or a numerical value set in the remote control key ID may be displayed. Similarly, it is possible to distinguish the broadcast network switching keys K1, K2, and K3.
[0045]
Next, FIG. 8 shows a second embodiment of the digital broadcast receiving apparatus according to the present invention, and is a block diagram showing a main part configuration thereof.
[0046]
As shown in FIG. 8, the digital broadcast receiving apparatus according to the second embodiment is detachable from the digital broadcast receiving apparatus according to the first embodiment. Is newly connected to the card-type external connection device 13 attached to the digital broadcast receiving apparatus, and the other configuration is the same as the configuration of the digital broadcast receiving apparatus according to the first embodiment. In FIG. 8, the same components as those shown in FIG. 1 are denoted by the same reference numerals.
[0047]
In this case, the external device connection interface 12 includes a personal computer memory card international association (PCMCIA) slot or the like, and is connected to the transport stream decoder 2 and the control unit 3. The card-type external connection device 13 is for expanding a broadcast network that can be received by the digital broadcast receiving device, and constitutes a card-type tuner.
[0048]
Here, FIGS. 9 and 10 are flowcharts showing the operation history of the digital broadcast receiving apparatus according to the second embodiment, and FIG. 9 shows the operation history when the external connection device 13 is newly attached. FIG. 10 shows an operation process when the externally connected device 13 that has been mounted is removed.
[0049]
First, the operation when the external connection device 13 is newly attached will be described with reference to the flowchart illustrated in FIG. 9.
[0050]
First, in step S11, the external connection device 13 formed of a card-type tuner is mounted on the external device connection interface 12.
[0051]
Next, in step S12, the external device connection interface 12 detects that the external connection device 13 formed of a card type tuner is mounted, and transmits the detection information to the control unit 3.
[0052]
Next, in step S13, the control unit 3 acquires a network ID of a new broadcast network corresponding to the external connection device 13 formed of a card type tuner from the external connection device 13 formed of a card type tuner. Then, an instruction to switch to reception of a new broadcast network is issued.
[0053]
Subsequently, in step S14, the control unit 3 causes the externally connected device 13 formed of a card type tuner to perform a receiving operation, obtains new network information from the externally connected device 13 formed of a card type tuner, and transmits the obtained network information to the network. The information is transferred to the information storage unit 4 (1). As a result, new network information is additionally stored in the network information storage unit 4 (1) in addition to the previously stored network information.
[0054]
Due to such operation, new network information is additionally stored in the network information storage unit 4 (1). Therefore, as shown in FIG. 4, a plurality of broadcast networks are displayed in a list on the video display unit 9. At this time, a list of the added broadcasting networks can be displayed together.
[0055]
Second, with reference to the flowchart illustrated in FIG. 10, a description will be given of an operation process when the externally connected device 13 that has been mounted is removed.
[0056]
First, in step S21, the external connection device 13 including the card type tuner is removed from the external device connection interface 12.
[0057]
Next, in step S22, the external device connection interface 12 detects that the external connection device 13 including the card type tuner has been removed, and transmits the detection information to the control unit 3.
[0058]
Next, in step S23, the control unit 3 receives the information indicating that the external connection device 13 composed of the card-type tuner has been removed, and receives a plurality of broadcast networks stored in the network information storage unit 4 (1). The broadcast network information corresponding to the removed card type tuner in the information is selected, and the selected broadcast network information is deleted.
[0059]
Subsequently, in step S24, the control unit 3 transmits the broadcast stored in the information storage unit 4 (1) to the tuner and the demodulation unit 1 based on the reception state of the broadcast network for the externally connected device 13 composed of a card type tuner. An instruction is issued to switch to reception of a broadcast network having one broadcast network information in the network information.
[0060]
As a result of this operation, the broadcast network information for the externally connected device 13 comprising the removed card-type tuner was deleted from the broadcast network information stored in the network information storage unit 4 (1). As illustrated, when a plurality of broadcast networks are displayed in a list on the video display unit 9, a list of broadcast networks excluding the deleted broadcast network can be displayed.
[0061]
【The invention's effect】
As described above, according to the first to third aspects of the present invention, the information storage means storing network information for a plurality of receivable broadcast networks and the operation device for selectively setting various states are provided. When a list display of broadcast networks is selected by an operation, the control unit reads the network information stored in the information storage unit and supplies the obtained network information to the display unit to display a list of a plurality of receivable broadcast networks. As a result, the currently displayed broadcast network and other receivable broadcast networks are simultaneously displayed on the display unit, and not only the currently received broadcast network but also other receivable broadcast networks are displayed. In addition to being able to easily recognize, multiple broadcast networks that can be received are displayed on the display. When you want to switch from the currently receiving broadcast network to another broadcast network, select the desired other broadcast network by operating the operation device, and the reception is switched to the selected broadcast network. There is an effect that the broadcast network to be received can be switched by a simple operation.
[0062]
According to the fourth and fifth aspects of the present invention, when a card-type external device capable of receiving one broadcast network is attached to or detached from a card slot or the like, the information can be stored in the information storage means. Network information for a new broadcast network is added or deleted, so that network information for a receivable broadcast network can always be stored in the information storage means without omission, and a plurality of broadcast networks receivable at the same time Can be displayed in a list on the display unit.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of a digital broadcast receiving apparatus according to the present invention, and is a block diagram illustrating a main part configuration thereof.
FIG. 2 is an explanatory diagram showing an example of network information stored in the form of an information table in a network information storage unit shown in FIG. 1;
FIG. 3 is a flowchart showing a process of displaying a list of receivable broadcast networks in the digital broadcast receiving apparatus shown in FIG. 1;
FIG. 4 is an explanatory diagram showing an example of a list of broadcast network names created by a control unit 3 of the digital broadcast receiving apparatus shown in FIG. 1 and displayed on a video display unit.
FIG. 5 is a schematic diagram showing a broadcast network switching key for selecting switching of a broadcast network to be received;
FIG. 6 is an explanatory diagram showing an example of network information stored in a network information storage unit in the form of an information table and used together with a broadcast network switching key.
FIG. 7 is an explanatory diagram illustrating an example of a list of broadcast network names having a broadcast network switching key created by a control unit of the digital broadcast receiving device and displayed on a video display unit;
FIG. 8 is a block diagram showing a second embodiment of the digital broadcast receiving apparatus according to the present invention, and showing a main configuration thereof.
FIG. 9 is a flowchart showing the operation of the digital broadcast receiving apparatus according to the second embodiment shown in FIG. 8 when an external device is newly attached.
FIG. 10 shows how the digital broadcast receiver according to the second embodiment shown in FIG. 8 operates when an externally connected device that has been mounted is removed.
[Explanation of symbols]
1 Tuner and demodulator
2 Transport stream (TS) decoder
3 control unit (CPU)
4 memory
4 (1) Network information storage
5 Audiovisual (AV) decoder
6 Graphics generator
7 Mixing section
8 Audio output section
9 Image display
10 Operation equipment
11 Received signal input terminal
12 External device connection interface
13 Card type external connection device

Claims (5)

Digital broadcast comprising: a demodulation unit that receives digital broadcasts on a plurality of broadcast networks and demodulates a received signal to generate a transport stream; and a decoder unit that decodes the transport stream to generate a video signal and an audio signal. In the receiving device, information storage means for storing network information for a plurality of receivable broadcast networks, an operating device for selecting and setting various states, a display unit for displaying video, information, and the like, and controlling operations of the entire device. A control unit that reads network information stored in the information storage unit by selecting the operation device, supplies the obtained network information to the display unit, and receives a plurality of broadcasts that can be received. While displaying a list of networks, a plurality of broadcast networks listed above are displayed. Digital broadcast receiving apparatus and switches to the reception of the other broadcast networks by selecting at work equipment. The digital broadcast receiving apparatus according to claim 1, wherein the reception switching to another broadcast network is performed by moving a cursor to a plurality of broadcast network names displayed in a list. The digital broadcast according to claim 1, wherein the reception switching to another broadcast network is performed by selecting a broadcast network switching key corresponding to each of the plurality of broadcast network names displayed in a list. Receiver. When a card-type external device capable of receiving one broadcast network is newly connected to a card slot or the like and a receivable broadcast network is added, a broadcast receivable by the card-type external device is controlled. 4. The digital broadcast receiving apparatus according to claim 1, wherein network information for a network is additionally stored in said information storage means. The controller is configured to, when a card-type external device capable of receiving one broadcast network connected to a card slot or the like is removed and the number of receivable broadcast networks is reduced, the broadcast receivable by the external device is reduced. 5. The digital broadcast receiving apparatus according to claim 1, wherein network information for a network is deleted from contents stored in said information storage means.

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