JP5105953B2 - Digital broadcast receiver - Google Patents

Description

  The present invention relates to a digital broadcast receiving apparatus of a digital broadcast system such as digital television broadcast and digital audio broadcast.

  Digital terrestrial television broadcasting operated in Japan is called ISDB-T (Integrated Services Digital Broadcasting for Terrestrial) system, and employs OFDM (Orthogonal Frequency Division Multiplexing) modulation system. This ISDB-T system divides the transmission band of one channel into 13 segments, and one of the segments (central segment number 0) is transferred to a mobile terminal such as a mobile phone or a PDA (Personal Digital Assistant). For digital terrestrial broadcasting, so-called 1-segment broadcasting.

  As a broadcasting apparatus adopting the above-mentioned ISDB-T system, recently, for example, digital broadcasting waves of a plurality of broadcasting stations are received, each one-segment broadcasting is extracted, and they are connected to connect to the broadcasting station channel. There has been proposed a broadcasting apparatus that retransmits data using different predetermined channels (for example, see Patent Document 1). In addition to a 1-segment broadcast extracted from a digital broadcast wave of a broadcast station, a broadcast apparatus configured to connect a 1-segment broadcast of unique content and transmit it on a predetermined channel has also been proposed.

JP 2006-109283 A

  As described in Patent Document 1 above, in the case where each segment of a predetermined channel is broadcasted by 1-segment broadcasting, it is conceivable that the segment arrangement of the service changes when the broadcasting region changes. In particular, as described above, in the case where broadcasting is performed by adding unique content to an existing service, if the broadcasting region changes, the possibility that the unique content and its segment arrangement will change increases.

  For this reason, in order for the user to grasp the segment arrangement of the service in the channel and partially receive the desired 1-segment broadcast, the user accesses the broadcasting station website of the channel and acquires the segment arrangement information of the service. Or receiving notification via e-mail, or scanning the segment of the channel to grasp the segment arrangement of the service. Further, even if the arrangement of segments being broadcast can be grasped, there is a problem that it is impossible to grasp what service (program) is being broadcast in which segment.

  However, in order to obtain the service segment arrangement information from the website of the broadcasting station, it is necessary to access the website of the broadcasting station for each acquisition. The Further, when the segment arrangement information of the service is grasped by scanning the segments in the channel, there is a concern that it takes time to grasp the segment arrangement information of all the services.

  In addition to the above technique, it is also conceivable to broadcast only one segment of original content on a predetermined channel. However, even in this case, in order to grasp the service segment arrangement in the channel, it is necessary to access the broadcasting station website of the channel or scan the channel segment in the same manner as described above. There will be similar problems.

  Also, in terrestrial digital audio broadcasting that adopts ISDB-Tsb (ISDB for Terrestrial Sound Broadcasting), it is conceivable to change the service segment arrangement or add original content depending on the broadcasting region. In these cases, the same problem occurs.

  That is, the conventional digital broadcasting technology is based on the premise that each service is broadcast on each specific physical frequency in a certain wide area, and the frequency arrangement is not changed in the specific wide area. It is. However, as in the above-described prior art, even in a wide area, a service that has been broadcast at a specific physical frequency is rearranged to a completely different frequency in a different segment layout, or broadcast, or A digital broadcasting apparatus that broadcasts a completely unique service (program) has been proposed. Many of such digital broadcasting apparatuses are small-scale and do not require authorization under the Radio Law, and it is expected that service contents, frequency allocation, and the like are frequently and dynamically changed. Therefore, it is difficult and inappropriate to assign and manage a specific service (channel) in advance to a specific physical frequency as in the prior art. The user carrying the digital broadcast receiving apparatus moves through such various and various digital broadcast reception areas. As described above, the broadcast is performed at a specific physical frequency known to the user. If there is a technology that seamlessly moves between the service of “general broadcasting device” and the service of the “broadcasting device proposed by Patent Document 1” that is broadcast at an unknown frequency arrangement to the user, the user However, such a technology has not been developed. Further, even if a user moves to a communication area that broadcasts a completely unique service, service information (frequency arrangement, etc.) in the broadcast cannot be known. Further, seamlessly, “Even if the original broadcasting service is broadcast on the destination broadcasting device, the fact that the service is moving seamlessly cannot be known.

  Accordingly, an object of the present invention made in view of such circumstances is to provide a receiving apparatus that does not require wasteful processing such as access to a broadcasting station website, channel scanning, segment scanning, or communication costs, and the related art. A digital broadcast receiving device that can notify the user of the existence of a service corresponding to a service of “general broadcasting device” or a different “broadcasting device broadcasting at an unknown frequency arrangement to the user” It is to be.

In order to solve the above-described problems, a digital broadcast receiving apparatus according to the present invention includes:
Digital broadcast reception of a digital broadcasting system that broadcasts the same service in the first physical frequency band and the second physical frequency band and broadcasts a service different from the service in the second physical frequency band A device,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second physical frequency band and the service broadcasted in the second physical frequency band;
A display unit;
When receiving the digital broadcast broadcast in the first physical frequency band, if the reception quality of the digital broadcast deteriorates, the frequency organization information is changed based on the information stored in the storage unit. Receiving a broadcast digital broadcast, and detecting from the frequency organization information included in the received digital broadcast a physical frequency that broadcasts a service corresponding to a digital broadcast service whose reception quality has deteriorated; A control unit that attempts to receive a digital broadcast based on the detected physical frequency and, if the reception is successful, controls to display on the display unit that the digital broadcast is received in the second physical frequency band When,
It is characterized by comprising.

The digital broadcast receiving apparatus according to one embodiment of the present invention includes:
Digital broadcast reception of a digital broadcasting system that broadcasts the same service in the first physical frequency band and the second physical frequency band and broadcasts a service different from the service in the second physical frequency band A device,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second physical frequency band and the service broadcasted in the second physical frequency band;
A display unit;
When the reception of the digital broadcast is newly started after the completion of the reception of the digital broadcast, when the data recorded in the recording unit includes information indicating the first physical frequency band, the Based on the information stored in the storage unit, control is performed so as to receive digital broadcasting based on information indicating the first physical frequency band, and predetermined reception quality cannot be obtained in reception by the control. And receiving a digital broadcast that broadcasts the frequency organization information, and broadcasting a service corresponding to the service of the data recorded in the recording unit from the frequency organization information included in the received digital broadcast. A digital broadcast based on the detected physical frequency, and if the reception is successful, the digital broadcast is performed in the second physical frequency band. A control unit for controlling to display the effect that has been received on the display unit,
A digital broadcast receiver characterized by comprising:

In addition, a digital broadcast receiving apparatus according to another embodiment of the present invention includes:
Digital broadcast reception of a digital broadcasting system that broadcasts the same service in the first physical frequency band and the second physical frequency band and broadcasts a service different from the service in the second physical frequency band A device,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second physical frequency band and the service broadcasted in the second physical frequency band;
A display unit;
When receiving an instruction to switch to the second physical frequency band service corresponding to the received digital broadcast service when receiving a digital broadcast broadcast in the first physical frequency band, When a digital broadcast that broadcasts the frequency organization information is received based on the information stored in the storage unit, and the switching instruction is detected from the frequency organization information included in the received digital broadcast When a physical frequency that is broadcasting a service corresponding to the received digital broadcast service is detected and reception of the digital broadcast based on the detected physical frequency is attempted and reception is successful, the second physical A control unit that controls to display on the display unit that a digital broadcast is received in a frequency band;
It is characterized by comprising.
It is characterized by that.

Moreover, a digital broadcast receiving apparatus according to still another embodiment of the present invention includes:
The control unit is
Based on the instruction, the display unit is controlled to switch from the display of the digital broadcast broadcast in the first physical frequency band to the display of the digital broadcast broadcast in the second physical frequency band. ,
It is characterized by that.

A digital broadcast receiving apparatus according to a further embodiment of the present invention provides:
Digital broadcast reception of a digital broadcasting system that broadcasts the same service in the first physical frequency band and the second physical frequency band and broadcasts a service different from the service in the second physical frequency band A device,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second physical frequency band and the service broadcasted in the second physical frequency band;
A recording unit for recording data including information indicating a physical frequency band corresponding to the reception and information indicating a service broadcast in the physical frequency band each time digital broadcasting is received;
A display unit;
When the reception of the digital broadcast is newly started after the completion of the reception of the digital broadcast, when the data recorded in the recording unit includes information indicating the first physical frequency band, the The digital broadcast is controlled to be received based on the information indicating the first physical frequency band, and the digital broadcast that is broadcasting the frequency organization information is received based on the information stored in the storage unit. Detecting a physical frequency broadcasting a service corresponding to a service of data recorded in the recording unit from the frequency organization information included in the received digital broadcast, and digital broadcasting based on the detected physical frequency A control unit that controls to display on the display unit that it is possible to receive a digital broadcast in the second physical frequency band;
It is characterized by comprising.

A digital broadcast receiving apparatus according to a further embodiment of the present invention provides:
Digital broadcast reception of a digital broadcasting system that broadcasts the same service in the first physical frequency band and the second physical frequency band and broadcasts a service different from the service in the second physical frequency band A device,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second physical frequency band and the service broadcasted in the second physical frequency band;
A display unit;
When receiving a digital broadcast broadcast in the first physical frequency band and detecting a search instruction for a service in the second physical frequency band corresponding to the received digital broadcast service, When a digital broadcast that broadcasts the frequency organization information is received based on the information stored in the storage unit, and the search instruction is detected from the frequency organization information included in the received digital broadcast When a physical frequency that is broadcasting a service corresponding to the digital broadcast service that was received at the time is detected, and a digital broadcast based on the detected physical frequency is received, the digital broadcast is performed in the second physical frequency band. A control unit that controls to display on the display unit that reception is possible;
It is characterized by comprising.

A digital broadcast receiving apparatus according to a further embodiment of the present invention provides:
The control unit is
Even if the instruction is detected, the display unit is controlled so as to maintain the display of the digital broadcast broadcast in the first physical frequency band.
It is characterized by that.

  The physical frequency band is preferably a physical channel. Alternatively, the physical frequency is preferably information indicating an OFDM segment.

A digital broadcast receiving apparatus according to a further embodiment of the present invention provides:
The first broadcast device and the second broadcast device broadcast the same service, and the second broadcast device is a digital broadcast receiving device of a digital broadcast system that broadcasts a service different from the service. There,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second broadcasting device and the service, which is broadcast by the second broadcasting device;
A display unit;
When receiving the digital broadcast broadcast by the first broadcasting device, if the reception quality of the digital broadcast deteriorates, the frequency organization information is broadcast based on the information stored in the storage unit. And detecting a physical frequency that broadcasts a service corresponding to the digital broadcast service whose reception quality has deteriorated, from the frequency organization information included in the received digital broadcast. A control unit that controls to display on the display unit that the second broadcast device is receiving the digital broadcast if the reception of the digital broadcast based on the physical frequency is attempted and the reception is successful.
It is characterized by comprising.

A digital broadcast receiving apparatus according to a further embodiment of the present invention provides:
The first broadcast device and the second broadcast device broadcast the same service, and the second broadcast device is a digital broadcast receiving device of a digital broadcast system that broadcasts a service different from the service. There,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second broadcasting device and the service, which is broadcast by the second broadcasting device;
A recording unit that records data including information indicating a physical frequency corresponding to the reception and information indicating a service broadcast on the physical frequency each time digital broadcasting is received;
A display unit;
When the reception of the digital broadcast is started after the completion of the reception of the digital broadcast, the data recorded in the recording unit includes information indicating the physical frequency of the first broadcast device , And control to receive a digital broadcast based on the information indicating the physical frequency, and if a predetermined reception quality is not obtained in the reception by the control, based on the information stored in the storage unit, A physical broadcaster that receives a digital broadcast that broadcasts the frequency organization information, and that broadcasts a service corresponding to the service of the data recorded in the recording unit from the frequency organization information included in the received digital broadcast. If the frequency is detected and the digital broadcast is received based on the detected physical frequency, and the reception is successful, the second broadcast device receives the digital broadcast. A control unit for controlling that the effect to be displayed on said display unit,
It is characterized by comprising.

A digital broadcast receiving apparatus according to a further embodiment of the present invention provides:
The first broadcast device and the second broadcast device broadcast the same service, and the second broadcast device is a digital broadcast receiving device of a digital broadcast system that broadcasts a service different from the service. There,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second broadcasting device and the service, which is broadcast by the second broadcasting device;
A display unit;
When receiving a digital broadcast broadcast by the first broadcast device, an instruction to switch to a service broadcast by the second broadcast device corresponding to the received digital broadcast service is detected. Then, based on the information stored in the storage unit, a digital broadcast that broadcasts the frequency organization information is received, and the switching instruction is detected from the frequency organization information included in the received digital broadcast When the physical frequency broadcasting the service corresponding to the digital broadcast service that has been received is detected, the digital broadcast based on the detected physical frequency is tried, and if the reception is successful, the second A control unit that controls to display on the display unit that a digital broadcast is being received by the broadcast device;
It is characterized by comprising.

A digital broadcast receiving apparatus according to a further embodiment of the present invention provides:
The control unit is
Based on the instruction, the display unit is controlled to switch from the digital broadcast display of the first broadcast device to the digital broadcast display of the second broadcast device.
It is characterized by that.

A digital broadcast receiving apparatus according to a further embodiment of the present invention provides:
The first broadcast device and the second broadcast device broadcast the same service, and the second broadcast device is a digital broadcast receiving device of a digital broadcast system that broadcasts a service different from the service. There,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second broadcasting device and the service, which is broadcast by the second broadcasting device;
A recording unit that records data including information indicating a physical frequency corresponding to the reception and information indicating a service broadcast on the physical frequency each time digital broadcasting is received;
A display unit;
When the reception of the digital broadcast is started after the completion of the reception of the digital broadcast, the data recorded in the recording unit includes information indicating the physical frequency of the first broadcast device The digital broadcast is received based on the information indicating the physical frequency, and the digital broadcast that broadcasts the frequency organization information is received based on the information stored in the storage unit. From the frequency organization information included in the received digital broadcast, a physical frequency broadcasting a service corresponding to the service of the data recorded in the recording unit is detected, and reception of the digital broadcast based on the detected physical frequency A control unit that controls to display on the display unit that it is possible to receive a digital broadcast by the second broadcasting device,
It is characterized by comprising.

A digital broadcast receiving apparatus according to a further embodiment of the present invention provides:
The first broadcast device and the second broadcast device broadcast the same service, and the second broadcast device is a digital broadcast receiving device of a digital broadcast system that broadcasts a service different from the service. There,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second broadcasting device and the service, which is broadcast by the second broadcasting device;
A display unit;
When receiving a digital broadcast broadcast at the physical frequency of the first broadcast device, a search instruction for a service at the physical frequency of the second broadcast device corresponding to the received digital broadcast service Is detected, based on the information stored in the storage unit, a digital broadcast that broadcasts the frequency organization information is received, and the search instruction is received from the frequency organization information included in the received digital broadcast. When a physical frequency broadcasting a service corresponding to the digital broadcast service received at the time of detection is detected and a digital broadcast based on the detected physical frequency is received, the second broadcast device digitally A control unit that controls to display on the display unit that the broadcast can be received;
It is characterized by comprising.

A digital broadcast receiving apparatus according to a further embodiment of the present invention provides:
The control unit is
Even if the instruction is detected, the display unit is controlled so as to maintain the display of the digital broadcast of the first broadcasting device.
It is characterized by that.

  The physical frequency is preferably a physical channel. Alternatively, the physical frequency is preferably information indicating an OFDM segment.

  As described above, the solution of the present invention has been described as an apparatus. However, the present invention can be realized as a method, a program, and a storage medium storing the program, which are substantially equivalent to these. It should be understood that these are also included.

As an example, a control method for a digital broadcast receiving apparatus according to another embodiment, in which the present invention is realized as a method,
Digital broadcast reception of a digital broadcasting system that broadcasts the same service in the first physical frequency band and the second physical frequency band and broadcasts a service different from the service in the second physical frequency band An apparatus control method comprising:
Storing in a storage unit information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second physical frequency band and the service broadcasted in the second physical frequency band; ,
When receiving the digital broadcast broadcast in the first physical frequency band, if the reception quality of the digital broadcast deteriorates, the frequency organization information is changed based on the information stored in the storage unit. Receiving a broadcast digital broadcast, and detecting from the frequency organization information included in the received digital broadcast a physical frequency that broadcasts a service corresponding to a digital broadcast service whose reception quality has deteriorated; Controlling to display on the display section that the digital broadcast is received in the second physical frequency band when the reception of the digital broadcast based on the detected physical frequency is attempted and the reception is successful; ,
It is characterized by having.

  According to the present invention, by using frequency organization information indicating a correspondence relationship between a physical frequency and a service, unnecessary processing such as access to a broadcasting station website, segment scanning within a channel, and communication costs are reduced. It is not necessary, and the receiving apparatus is different from the service of the “conventional general broadcasting apparatus” that broadcasts at a specific physical frequency known to the user. ”Can be notified to the user, and the convenience of the user is greatly improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, terms used in this embodiment will be described. However, the present invention is not limited to this. The “guide channel (ch)” in the embodiment is defined as a channel for broadcasting frequency organization information indicating a correspondence relationship between physical frequencies (segments) and services related to all the transmitted programs. In addition, since the digital broadcast receiving apparatus first receives the segment number 0 in order to refer to the NIT (Network Interface Table), the guide ch is preferably arranged at the segment number 0. Further, “unique broadcast (service) (unique program / independent program)” is a service (program) created outside an existing broadcasting station. For example, it is a service (program) that provides information on a limited area or facility such as a shopping street, an amusement park, or a museum.

  FIG. 1 is a configuration diagram of a digital broadcasting system including a receiving apparatus to which the present invention is applied and a broadcasting apparatus that provides broadcast waves to the receiving apparatus. As shown in the figure, this digital broadcasting system is composed of a receiving device 100 and broadcasting devices 200 and 300. The broadcasting apparatus 200 is a broadcasting apparatus of a general digital broadcasting system. One segment broadcasting, that is, digital broadcasting using a segment for partial reception that can be received by one segment alone, and terrestrial using 12 segments. Digital broadcasting for TV. In this digital broadcasting system, the broadcasting device 200 and the broadcasting device 300 are broadcasting the same service, but the physical frequency band used by the broadcasting device 200 and the physical frequency band used by the broadcasting device 300 are the same. Is different. That is, all or part of the service broadcast from the broadcast device 200 is broadcast from the broadcast device 300 using a physical frequency band different from the physical frequency band used by the broadcast device 200. The broadcast device 300 also broadcasts a service different from the service broadcast by the broadcast device 200, for example, an original broadcast (original program / independent program). The receiving device 100 according to the present invention can receive a digital broadcast broadcast from the broadcasting device 200 in a reception area covered by the broadcasting device 200. For example, when the receiving apparatus 100 enters an underground mall or the like, the digital broadcast from the broadcasting apparatus 200 becomes a weak electric field or out of service area, and it is difficult to continue receiving. On the contrary, it may occur that the digital broadcast from the broadcasting device 300 goes out to the ground from the underground shopping street, becomes a weak electric field or out of service area, and it is difficult to continue reception. In such a case, the receiving apparatus 100 seamlessly switches between the digital broadcast reception of the broadcast apparatus 200 and the digital broadcast reception of the broadcast apparatus 300 via a guide channel (described in detail later).

  FIG. 2 is a block diagram of the broadcasting device 300. As shown in the figure, the broadcasting apparatus 300 includes a number of receiving units corresponding to the number of channels input from the optical fiber, that is, a chA receiving unit 310A, a chB receiving unit 310B, and a chZ receiving unit 310Z. The broadcast device 300 further includes a multiplexing processing unit 320, a modulation unit 330, a transmission unit 340, a guide channel creation unit 350, and an antenna 360. The chA receiving unit 310A, the chB receiving unit 310B, and the chZ receiving unit 310Z include TS signal receiving units 312A, 312B, and 312Z, and service information extracting units 314A, 314B, and 314Z, respectively.

  In this embodiment, the chA receiving units 310A and 310B correspond to existing physical channel broadcasting stations. Here, for convenience, for example, the chA receiver 310A corresponds to the AAA television of the physical channel chA, and the chB receiver 310B corresponds to the BBB television of the physical channel chB. The TS signal receiving unit 312A of the chA receiving unit 310A receives the chA TS signal transmitted via the transmission means such as an optical fiber from the content storage device of the corresponding broadcasting station, and the service information extracting unit 314A receives the TS signal. The service information contained in is extracted. The chB receiving unit 310B also performs similar processing on the chB TS signal. Further, the chZ receiving unit 310Z corresponds to the original broadcast (service) of the broadcast device 300. The TS signal receiving unit 312Z of the chZ receiving unit 310Z receives a chZ TS signal transmitted from a corresponding content storage device or the like via a transmission means such as an optical fiber, and is included in the TS signal by the service information extracting unit 314Z. Extract service information. The service information extraction units 314A, 314B, and 314Z extract service information from the TS signals supplied from the TS signal reception units 310A, 310B, and 310Z, and supply the extracted service information to the guide channel creation unit 350.

  Based on the service information supplied from the service information extraction units 314A, 314B, and 314Z (for example, SDT: Service Description Table in the PSI / SI information), the guide channel creation unit 350, for example, a segment as shown in FIG. A 1-segment broadcasting data broadcast composed of BML, which is frequency organization information in which a number and a service name (broadcast station) are associated, that is, a TS signal for a guide channel is created. Here, the segment number and service name are associated with each other by assigning segment number 0 to the guide channel, and the remaining segment numbers 1 to 12 are fixed according to the number of TS signals (broadcast stations) received by each receiving unit. A broadcast station name is assigned according to a predetermined program.

  The multiplexing processing unit 320 multiplexes the partial reception TS signal of each channel and the TS signal of the guide channel based on a segment arrangement set in advance. At this time, a control signal or the like is added so as to be adapted to the digital broadcast signal. Modulation section 330 converts the multiplexed signal into an OFDM signal and sends it to transmission section 340. Transmitter 340 amplifies the OFDM signal to a set value and outputs the amplified signal from antenna 360.

  FIG. 3 is a diagram illustrating a segment configuration of a channel transmitted by the broadcasting device 300. As shown in the upper part of the figure, the broadcasting apparatus 300 which is a normal broadcasting station uses the central segment number 0 for each physical channel for 1-segment broadcasting which is a segment for partial reception. The broadcast device 300 broadcasts each service of segment number 0 for partial reception in one physical channel. In addition, the broadcasting apparatus 300 can also arrange the unique program in an unused segment (eg, segment number 10 in FIG. 3) as a segment reception segment. Information for linking to each of these services (for example, BML as shown in FIG. 6) is stored in the central segment number 0 which is a guide ch. Each service (channel) does not have to be completely connected without a gap so that the lower segment 7 in FIG. 3 is unused. Such a format is also referred to as a connected broadcast for convenience.

  Here, the data broadcasting of the guide channel assigned to the segment number 0 is a function of displaying the physical channel or remote control channel (channel number) of the existing broadcasting station associated with the physical channel in the 1-segment receiving device, and the user It has a role of notifying the tuner section of a segment (frequency) to be tuned at the time of channel selection. For this reason, in this data broadcasting, links are established to all physical channels of existing broadcasting stations and original broadcasting that are services included in the guide ch (in this example, segment numbers in the same physical channel as the guide ch). In the receiving apparatus, the user can select a channel in the physical channel assigned by the guide ch by selecting a link to the channel desired by the user.

  FIG. 4 is a block diagram of a receiving apparatus according to an embodiment of the present invention. As shown in the figure, the receiving apparatus 100 includes a control unit 110, a tuner unit 120, a demodulation unit 130, an audio decoder unit 140, a video decoder unit 150, a data broadcast decoder unit 160, a screen control unit 170, a memory 180, and a recording unit 185. , And an input unit 190. The receiving apparatus 100 further includes an antenna ANT, a system bus SB, a speaker SP, and a screen display unit DIS.

The operation up to the display of the digital broadcast broadcast by the broadcast device 300 in the reception device 100 will be briefly described. The receiving device 100 carried by the user is in an area where a broadcast wave transmitted from the broadcasting device 300 can be received.
1. The user selects a signal transmitted from the broadcasting device 300. Here, it is assumed that the frequency (channel) transmitted from the broadcasting apparatus is known.
2. When the channel selection is completed, the guide channel is displayed, so the user displays a data broadcast and selects a desired program.
3. The control unit 110 converts the segment number into a frequency and notifies the tuner unit 120 of the frequency.
4). The tuner unit 120 tunes to a frequency designated.

  The function of each part of the receiving apparatus 100 will be described in detail. The receiving apparatus 100 receives a digital broadcast signal by the antenna ANT, and the received RF signal is tuned by the tuner section 120 based on a frequency (channel) designation command from the control section 110 that controls the entire apparatus. The channel signal frequency-converted by the tuner unit 120 is demodulated into an MPEG TS (Transport Stream) signal by the demodulation unit 130, and an audio packet, a video packet, and a data broadcast packet are detected based on the packet ID in the TS signal. Are output to the audio decoder unit 140, the video decoder unit 150, and the data broadcast decoder unit 160. The audio decoder unit 140 decodes the audio data and outputs it to the speaker SP. The video decoder unit 150 decodes the video data and outputs it to the screen control unit 170. The data broadcast decoder unit 160 creates a screen image based on the received BML and outputs it to the screen control unit 170. When the user clicks and selects a desired service (program) using the input unit 190, the control unit 110 determines the segment number broadcasting the service from the BML and tunes it to the frequency of the segment number. The tuner unit 120 is controlled. Further, the data broadcast decoder unit 160 takes out the program guide from the received BML and stores it in the memory 180. The memory 180 detects information for receiving a channel list and a guide channel (such as a physical channel or a set of physical channels and segments), a BML, a program table extracted from this, or a deterioration in reception quality of digital broadcasting. A threshold value for storing the value is stored. The recording unit 185 stores the last channel (last reception channel). Note that the memory 180 may be one storage area of the recording unit 185. The screen control unit 170 outputs the data output from the video decoder unit 150 and the data broadcast decoder unit 160 to the screen display unit DIS based on a command from the control unit 110. Here, the program table includes a service ID and a network ID (broadcast station name) and a physical frequency associated with the service ID (in this example, a segment number or a set of physical channel and segment number). The control unit 110 detects reception quality of digital broadcasting in cooperation with other components. Further, the screen display unit DIS can display / receive a received broadcast, receive / receive a certain frequency band of the original broadcast, and receive / receive a broadcast of a broadcast apparatus that broadcasts the original broadcast. Display.

  FIG. 5 is a diagram showing a screen image displaying a data broadcast broadcast on the guide channel. FIG. 6 is a diagram showing an example of BML (Broadcast Markup Language) source code used in the guide channel for performing the display of FIG. 5 and switching operation to each channel. As shown in FIGS. 5 and 6, the data broadcast broadcast on the guide channel has links to all the channels that are linked or related, and the user selects the link of the desired channel, You can tune in. For example, when “AAA TV” in FIG. 5 is selected, a function called onTune () newly introduced for channel selection is called according to BML in FIG. 6, and the function is selected according to the value of id. Bureau. In the case of AAA television, “chA” is entered in id, and the channel 11 is selected by browser.tune (“11”). PSI / SI (Program Specific Information / Service Information) information of the connected channels may be put in the data broadcast, and the value may be extracted on the receiver side.

  FIG. 7 shows a correspondence table in which segments included in the data broadcast data of the guide channel are associated with program names. As shown in the figure, the data (data broadcast) stored in the data broadcast of the guide channel needs to contain at least a segment (frequency) and service correspondence table (Table 1). This correspondence table has a role of displaying the connected channels on the screen display unit DIS on a screen as shown in FIG. 5 and a role of notifying the tuner unit 120 of a segment to be tuned at the time of channel selection.

  FIG. 8 is a flowchart showing an operation flow (pattern 1) of the receiving apparatus 100 when there is only broadcasting of the broadcasting apparatus 300 after the television is activated. Here, it is assumed that the user carrying the receiving apparatus 100 is located in an area where the broadcast from the broadcasting apparatus 300 can be received, instead of an area where the digital broadcasting of the normal broadcasting apparatus 200 as shown in FIG. 1 can be received. FIG. 14A shows a screen transition diagram in the pattern 1. As shown in FIG. 8, in step S <b> 101, the user activates the television function using the input unit 190. In response to this activation, the control unit 110 controls the tuner unit 120 to select the channel A of the broadcasting device 200 registered as the last channel. Receiving this, the tuner unit 120 tunes to channel A (step S102). Next, in step S103, it is determined using the electric field strength or the like whether or not channel A exists, that is, can be received. If channel A exists, channel A is displayed (step S104). If channel A does not exist, that is, if it cannot be received, the process proceeds to step S106, and the guide channel of the broadcasting device 300 is selected (S106). In addition, after step S104, if the reception quality (for example, reception sensitivity or reception image quality) is equal to or lower than an arbitrary threshold value N (step S105) during channel A reception, the process proceeds to step S106, and the broadcasting device 300 Select a guide channel.

  Upon receiving this channel selection, the tuner unit 120 tunes to the guide channel, and determines whether the guide channel exists, that is, whether it can be received using the electric field strength (step S107). If the guide ch exists, that is, if it can be received, the program guide is acquired from the guide ch (step S108). From the acquired program guide, the channel corresponding to channel A, that is, the channel P of the broadcasting apparatus 300 having the same service ID as channel A (in this example, the segment number at a specific position in a physical channel). Is selected (step S109), and the channel P is displayed (step S110). Further, when the channel P is being received / displayed, a mark indicating the broadcast of the broadcast device 300 that notifies the user of this is displayed. In the display of the mark indicating the broadcast of the broadcast device 300, the broadcast device 300 can receive the non-highlighted display indicating only that the broadcast of the broadcast device 300 (the physical frequency band of the connected broadcast) can be received, In addition, there is an emphasis display indicating that the broadcast of the broadcast apparatus 300 is displayed on the screen. In step S111, a mark indicating the broadcast of the broadcast apparatus 300 is lit (increases brightness) to be highlighted. If the guide ch cannot be received in step S107, the process proceeds to step S112 to display “cannot be received” indicating that it cannot be received (message), and the process is terminated. The channel selection of the guide channel is performed only once, but may be performed a plurality of times.

  As shown in FIG. 14A, in the case of pattern 1, the screen gradually transitions from “standby screen” to “channel selection” and “program (viewing)”, and the user's operation is changed. It is possible to smoothly transition to the broadcasting of the broadcasting device 300 without intervention. In addition, since the mark MK1 indicating the broadcast of the broadcast device 300 is displayed and blinking on the screen, the user can see that the broadcast that he / she is watching is different from the normal broadcast of the broadcast device 200 “broadcast of the broadcast device 300 It is possible to easily understand that

  FIG. 9 is a flowchart showing an operation flow (pattern 2) in which the receiving device 100 switches from the channel of the broadcasting device 200 to the channel of the broadcasting device 300. Here, the user carrying the receiving apparatus 100 gradually moves from the area where the digital broadcasting channel A of the normal broadcasting apparatus 200 as shown in FIG. 1 can be received to the area where the broadcasting from the broadcasting apparatus 300 can be received. A case is assumed in which the reception quality of A deteriorates. FIG. 14B shows a screen transition diagram in this pattern 2. As shown in FIG. 9, in step S201, channel A broadcasted by the broadcasting device 200 is received and displayed. After step S201, during reception of channel A, if the reception quality becomes an arbitrary threshold value N or less (step S202), the process proceeds to step S203, and a broadcast guide channel broadcasted by the broadcast device 300 is selected.

  Upon receiving this tuning, the tuner unit 120 tunes to the guide ch and determines whether the guide ch exists, that is, whether it can be received or not using the electric field strength (step S204). If the guide ch exists, that is, if it can be received, a program guide is acquired from the guide ch (step S205). From this acquired program guide, channel P of the broadcasting apparatus 300 corresponding to channel A, that is, having the same service ID as channel A is selected (step S206), and channel P is displayed (step S207). Further, when the channel P is being received / displayed, a mark indicating the broadcast of the broadcast device 300 that notifies the user of this is displayed. In the display of the mark indicating the broadcast of the broadcast device 300, the broadcast device 300 can receive a non-highlighted display that only indicates that the broadcast of the broadcast device 300 can be received, and the broadcast device 300 can be received on the screen. In step S208, a mark indicating broadcasting of the broadcasting device 300 is lit (increases brightness) to be highlighted. If the guide ch cannot be received in step S204, the process proceeds to step S209, displays “message cannot be received” indicating that the broadcast of the broadcast device 300 cannot be received (message), and the process is terminated. Of course, in this case, the mark indicating the broadcast of the broadcast apparatus 300 is not displayed.

  As shown in FIG. 14 (b), in the case of pattern 2, the screen changes from “viewing channel A” to “program on channel P (viewing)” without any user operation. It is possible to smoothly shift to broadcasting by the broadcasting device 300. In addition, since the mark MK2 indicating the broadcast of the broadcast device 300 is displayed and blinking on the screen, the user can see that the broadcast that he / she is watching is different from the normal broadcast of the broadcast device 200 “broadcast of the broadcast device 300 It is possible to easily understand that

  FIG. 10 is a flowchart showing an operation flow (pattern 3) in which the receiving device 100 manually switches from the channel of the broadcasting device 200 to the channel of the broadcasting device 300. Here, a user carrying the receiving apparatus 100 receives a broadcast reception button (frequency organization information) of a broadcasting apparatus 300 (not shown) provided in the input unit 190 while receiving a digital broadcast of a normal broadcasting apparatus 200 as shown in FIG. A case is assumed in which a button that is assigned a function of receiving a stored segment is pressed to switch to broadcasting from the broadcasting device 300. FIG. 14C shows a screen transition diagram in this pattern 3. As shown in FIG. 10, in step S301, channel A broadcasted by the broadcasting device 200 is received and displayed. After step S301, during channel A reception, a broadcast reception button (not shown) of the broadcast apparatus 300 provided in the input unit 190 is pressed. The control unit 110 that detects the pressing of the button controls the tuner unit 120 to select a guide channel that the broadcast device 300 broadcasts. Under this control, the tuner unit 120 tunes to the guide ch (step S303), and determines whether the guide ch exists, that is, whether it can be received using the electric field strength (step S304). When a guide channel exists, that is, when a guide channel can be received, a program guide is acquired from the guide channel, and further corresponds to the channel A being received, that is, the channel of the broadcasting device 300 having the same service ID. Channel P is selected and channel P is displayed (step S305). Further, when the channel P is being received / displayed, a mark indicating the broadcast of the broadcast device 300 that notifies the user of this is displayed. In step S306, the mark indicating the broadcast of the broadcast device 300 is highlighted (by lighting (or increasing brightness)) and blinking. In step S304, if the guide channel does not exist (cannot be received), the process proceeds to step S307 to display “cannot receive” indicating that the broadcast of the broadcasting apparatus 300 cannot be received (message), and receives the original channel A. Display (step S308), and the process ends. Of course, in this case, the mark indicating the broadcast of the broadcast apparatus 300 is not displayed.

  As shown in FIG. 14C, in the case of pattern 3, the screen transitions from “viewing channel A” to “program on channel P (viewing)”, and smoothly according to the user's operation. It is possible to shift to broadcasting by the broadcasting device 300. In addition, since the mark MK3 indicating the broadcast of the broadcast device 300 is displayed and blinking on the screen, the user can see that the broadcast that the user is watching is different from the normal broadcast of the broadcast device 200 “broadcast of the broadcast device 300 It is possible to easily understand that

  FIG. 11 is a flowchart showing an operation flow (pattern 4) in which the receiving device 100 switches from the channel of the broadcasting device 300 to the channel of the broadcasting device 200. Here, it is assumed that the normal terrestrial digital broadcast of the broadcast device 200 and the broadcast of the broadcast device 300 are both in the viewable area after the television is activated. In addition, it is assumed that the channel (channel A in the description) broadcast by the broadcasting device 200 last viewed by the user is stored in the recording unit 185 as the last channel. FIG. 15A shows a screen transition diagram in the pattern 4. As shown in FIG. 11, in step S <b> 401, the user activates the television function using the input unit 190. In response to this activation, the control unit 110 controls the tuner unit 120 to select the channel A broadcasted by the broadcasting device 200 registered as the last channel. Receiving this, the tuner unit 120 tunes to channel A (step S402). Next, in step S403, the channel selected by the broadcasting device 300 is selected. Then, in step S404, it is determined using the electric field strength or the like whether or not the guide ch exists, that is, can be received. If there is a guide ch, a program guide is acquired from the guide ch (step S405). In step S406, it is determined using channel strength or the like whether channel A exists, that is, whether or not reception is possible. If there is channel A, that is, if reception is possible, channel A is displayed (step S407). If the channel A does not exist, that is, cannot be received, the process proceeds to step S410, and the channel P of the broadcasting apparatus 300 corresponding to the channel A, that is, having the same service ID as the channel A is obtained from the program table acquired in step S405. A channel is selected (step S411), and the channel P is displayed (step S412). Further, when the channel P is being received / displayed, a mark indicating the broadcast of the broadcast device 300 that notifies the user of this is displayed. In step S413, the mark indicating the broadcast of the broadcast device 300 is turned on (increasing brightness) to indicate that the broadcast of the broadcast device 300 is being received. In step S410, if there is no broadcast channel P of the corresponding broadcast apparatus 300, the process proceeds to step S414, “cannot be received” (message) is displayed and a process is terminated. In addition, even if the channel A is displayed in step S407, if the guide ch is received (step S408), a mark indicating the broadcast of the broadcast device 300 is displayed (step S409).

  As shown in FIG. 15A, when the process reaches step S409 in the pattern 4, the screen changes from “standby screen” to “selected channel” and “digital broadcast program (viewing)” on the broadcasting device 200. The program gradually transitions and allows the user to watch the program smoothly without any user operation, and the screen displays the mark MK4 indicating the broadcast of the broadcast device 300. The broadcast being broadcast is the normal broadcast of the broadcast apparatus 200, but “the broadcast of the broadcast apparatus 300 can be viewed” corresponding to this normal broadcast (service), and the broadcast of the broadcast apparatus 300 can be received. This can be easily grasped.

  FIG. 12 is a flowchart showing an operation flow (pattern 5) for checking whether or not the receiving apparatus 100 can switch from the channel of the broadcasting apparatus 200 to the channel of the broadcasting apparatus 300. Here, a user carrying the receiving apparatus 100 receives a broadcast reception button (frequency organization information) of a broadcasting apparatus 300 (not shown) provided in the input unit 190 while receiving a digital broadcast of a normal broadcasting apparatus 200 as shown in FIG. A case is assumed in which “a button that is assigned a function of receiving a stored segment” is pressed to “inspect only whether or not a broadcast from the broadcast apparatus 300 can be received”. FIG. 15B shows a screen transition diagram in the pattern 5. As shown in FIG. 12, channel A is received and displayed in step S501. After step S501, the broadcast receiving button (not shown) of the broadcasting device 300 provided in the input unit 190 is pressed during the channel A reception of the broadcasting device 200. Upon detecting this button press, the control unit 110 controls the tuner unit 120 to select a guide channel. Under this control, the tuner unit 120 tunes to the guide ch (step S503), and determines whether the guide ch exists, that is, whether it can be received using the electric field strength (step S504). When the guide ch exists, that is, when the guide ch can be received, the program guide is acquired from the guide ch, but the channel A is selected again and the display of the channel A is continued (step S505). Then, in order to notify the user that the broadcast of the broadcast device 300 can be viewed, a mark indicating the broadcast of the broadcast device 300 is displayed. In step S506, the mark indicating the broadcast of the broadcast device 300 is not lit (or the brightness is reduced) so that it is not highlighted. In step S504, if the guide channel does not exist (cannot be received), the process proceeds to step S507 to display “cannot receive” indicating that the broadcast of the broadcasting device 300 cannot be received (message), and receive the original channel A. This is displayed (step S508), and the process ends. Of course, in this case, the mark indicating the broadcast of the broadcast apparatus 300 is not displayed.

  As shown in FIG. 15B, in the case of pattern 5, the screen for notifying that “the broadcast program of the broadcast device 300” is viewable transitions from the “viewing channel A” screen. In response to the user's operation, while displaying the program of the channel A currently being viewed, it is possible to check in the background that “the broadcast of the broadcasting device 300 is viewable” and notify the user. . That is, since the mark MK5 indicating the broadcast of the broadcast device 300 is displayed on the screen, the user can easily grasp that “the broadcast of the broadcast device 300 can be viewed” which is different from the normal broadcast of the broadcast device 200. It becomes possible to do.

  FIG. 13 is a flowchart showing an operation flow when a button for selecting a guide channel of the broadcasting device 300 and displaying a program guide is pressed. As shown in the figure, in step S601, the user presses a program guide display button (not shown) of the input unit 190. Upon receiving this tuning, the tuner unit 120 tunes to the guide channel (step S602), and determines whether the guide channel exists, that is, whether it can be received or not using the electric field strength (step S603). If the guide ch exists, that is, if the guide ch can be received, the program guide is acquired from the guide ch (step S604), and the program guide is displayed (step S605). If the guide ch does not exist in step S603, that is, if it cannot be received, the process proceeds to step S606 to display a message (message) indicating that “cannot be received” and the process is terminated. In this way, it is possible to adopt a configuration in which only the program guide is acquired and displayed, and then the user selects a desired program.

  The marks MK1 to MK5 indicating the broadcasting of the broadcasting device 300 can be displayed to indicate that a digital broadcasting from a broadcasting device 300 different from the broadcasting device 200 that performs normal digital broadcasting is received. is there. In this case, the network ID of the broadcasting station or the like may also be displayed, or information on the organization or facility name where the broadcasting apparatus 300 is installed (for example, yyy building, xxx amusement park) may be displayed. Also, the marks MK1 to MK5 indicating broadcasting of the broadcasting device 300 are digital signals that broadcast the same service as a normal service or a unique service in a frequency band different from the frequency band of normal digital broadcasting. In the case of a broadcasting system, “a mark indicating a frequency band (second frequency band) different from the frequency band of normal digital broadcasting” may be displayed instead of the marks MK1 to MK5 indicating broadcasting of the broadcasting device 300. Is possible. In this case, the physical channel number, the segment number, etc. may be specifically displayed, or the frequency band and the frequency itself may be displayed together.

Finally, the effects of the embodiments of the present invention are summarized as follows.
1. Since the current 1-segment receiver is tuned to the segment (segment number 0) for partial reception when the channel is selected, the segment number 0 of the channel (frequency) transmitted from the broadcasting device 300 such as a gap filler is set. By arranging the guide channel including the frequency organization information, the receiver can know which service the broadcasting device 300 is broadcasting simply by selecting a channel (frequency) transmitted from the broadcasting device 300. I can do it.
2. Also, if it is not possible to receive a channel (frequency) transmitted from the broadcasting device 300 (that is, if it is outside the area of the broadcasting device 300), it is highly likely that a service that is broadcast independently cannot be received. The user may not perform a useless operation (for example, channel scan).
3. On the other hand, if the guide channel can be received, it can be understood that the user is within the area of the broadcasting device 300. That is, there is a high possibility that the service transmitted by the broadcasting device 300 can be received.
4). Even if a weak electric field is received during reception of a certain digital broadcast channel, if the guide channel of the broadcast device 300 can be searched and received, the broadcast channel of the broadcast device 300 having the same service as the channel being viewed is selected and displayed. Therefore, it is possible to seamlessly switch from the normal broadcast device 200 channel to the broadcast device 300 channel without the user being aware of it.

5. On the contrary, even if a weak electric field is received during reception of the channel of the broadcasting device 300, the channel of the broadcasting of the same service as the service being watched is selected and displayed. It is possible to switch to the normal broadcasting device 200 channel.
6). Since the program information is displayed when the button assigned with the function of receiving the segment storing the frequency organization information of the broadcast of the broadcast device 300 is displayed, the user can know the program of the broadcast device 300 at any time.
7). Since the display (MK1-3) indicating that the broadcasting of the broadcasting device 300 is being received is always performed while the broadcasting of the broadcasting device 300 is being received, the user can easily determine that the broadcasting of the broadcasting device 300 is being received.
8). Further, if it is known that the broadcast of the broadcast device 300 is received, the user can be an opportunity to select another channel included in the broadcast of the broadcast device 300.
9. Also, at the time of activation, the broadcast of the broadcast device 200 and the broadcast of the broadcast device 300 are alternately received, and the user is notified that the broadcast of the broadcast device 300 can be received even when the broadcast of the broadcast device 200 is being displayed (MK4, 5). Can do.

  While the effects of 1-9 have been described by taking the example of a digital communication system in which the same service is broadcasted by two broadcasting apparatuses and the broadcasting apparatus 300 performs independent broadcasting, the same service is assigned to the first frequency band and the first frequency band. A digital communication system that performs broadcasting in the second frequency band and performs independent broadcasting in the second frequency band has the same effect. That is, it is possible to notify the user of the existence of the unique service by displaying that the second frequency band is received or is receivable.

  Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, the functions included in each unit, each means, each step, etc. can be rearranged so as not to be logically contradictory, and a plurality of means, steps, etc. can be combined or divided into one. It is.

  For example, as shown in FIG. 3, a mode has been described in which the guide ch and each channel (service) associated therewith are accommodated in one physical channel, but the present invention is limited to this. It is not a thing. That is, the guide channel is broadcast in any frequency band regardless of the physical channel or segment, and frequency information (physical channel or segment number, or It is sufficient to store a similar item). In the present invention, the guide ch is described as being transmitted from the broadcast device 300. However, the broadcast device 200, which is a broadcast device that performs normal broadcasting, or other broadcasts that are provided in a spot separately from each other. An original service or guide channel may be broadcast from the device. In other words, in the present invention, it is only necessary to be able to receive frequency organization information indicating the correspondence between physical frequencies and services regardless of the broadcasting device, and broadcasting devices that broadcast services guided by frequency organization information (guide ch) are also available. Note that it doesn't matter. In addition, although the service guided by the guide channel is a connected segment in a specific physical channel, this is merely an example, and the service guided by the guide channel is a separate physical channel, or It may be accommodated in any segment of a separate physical channel. FIG. 16 shows an example of the frequency arrangement used by the broadcasting device 300. As shown in FIG. 16, this includes a mode in which a certain frequency band (physical channel or segment) is used as a guide channel and frequency organization information indicating a correspondence relationship between another frequency band (physical channel or segment) and a service is broadcast.

  In addition, the broadcasting apparatus 300 illustrated in FIGS. 1 and 2 has been described with a configuration that receives a TS signal through an optical fiber. However, the broadcasting apparatus 300 is not limited thereto, and for example, a receiving antenna is provided and used. It may be configured as a relay device or a gap filler device that receives an RF signal from another broadcasting device. Further, in the case of a digital communication system that broadcasts the same service in the first frequency band and the second frequency band and broadcasts a unique service in the second frequency band, the same broadcasting device is the first and first broadcasting devices. You may broadcast using 2 frequency bands.

1 is a configuration diagram of a broadcasting system including a receiving device to which the present invention is applied and a broadcasting device that provides broadcast waves to the receiving device. 2 is a block diagram of a broadcasting device 300. FIG. It is a figure which shows the segment structure of the channel which the broadcast apparatus 300 transmits. It is a block diagram of the receiver by one embodiment of this invention. It is a figure which shows the screen image which displayed the data broadcast currently broadcast by guide ch. It is a figure which shows an example of the source code of BML (Broadcast Markup Language) used by guide ch. It is the correspondence table which linked | related the segment contained in the data broadcasting data of a guide channel, and a program name. It is a flowchart which shows the operation | movement flow (pattern 1) of the receiver 100 when there is only the broadcast of the broadcasting apparatus 300 after television starting. 10 is a flowchart illustrating an operation flow (pattern 2) in which the receiving device 100 switches from a channel of the broadcasting device 200 to a channel of the broadcasting device 300. 12 is a flowchart showing an operation flow (pattern 3) in which the receiving device 100 manually switches from the channel of the broadcasting device 200 to the channel of the broadcasting device 300. 10 is a flowchart showing an operation flow (pattern 4) in which the receiving device 100 switches from the channel of the broadcasting device 300 to the channel of the broadcasting device 200. 12 is a flowchart showing an operation flow (pattern 5) for checking whether or not the receiving device 100 can switch from the channel of the broadcasting device 200 to the channel of the broadcasting device 300. 10 is a flowchart showing an operation flow when a button for selecting a guide channel of the broadcasting device 300 and displaying a program guide is pressed. It is a screen transition diagram in patterns 1-3. It is a screen transition diagram in patterns 4 and 5. FIG. 3 is a diagram illustrating an example of a frequency arrangement used by the broadcasting device 300.

Explanation of symbols

100 receiving device 110 control unit 120 tuner unit 130 demodulating unit 140 audio decoder unit 150 video decoder unit 160 data broadcast decoder unit 170 screen control unit 180 memory 185 recording unit 190 input unit DIS screen display unit SB system bus SP speaker ANT antenna 200, 300 Broadcasting devices 310A, 310B, 310Z chA signal receiving unit, chB signal receiving unit, chZ signal receiving unit 312A, 312B, 312Z TS signal receiving unit 314A, 314B, 314Z Service information extracting unit 320 Multiplexing processing unit 330 Modulating unit 340 Transmission Part 350 guide channel creation part 360 antenna MK1-MK5 mark indicating broadcasting of broadcasting apparatus 300

Claims (34)

Digital broadcast reception of a digital broadcasting system that broadcasts the same service in the first physical frequency band and the second physical frequency band and broadcasts a service different from the service in the second physical frequency band A device,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second physical frequency band and the service broadcasted in the second physical frequency band;
A display unit;
When receiving the digital broadcast broadcast in the first physical frequency band, if the reception quality of the digital broadcast deteriorates, based on the physical frequency indicated in the information stored in the storage unit Receiving a digital broadcast that broadcasts the frequency organization information, and broadcasting a service corresponding to the service of the digital broadcast whose reception quality has deteriorated from the frequency organization information included in the received digital broadcast If the frequency is detected and the digital broadcast is received based on the detected physical frequency, and the reception is successful, the fact that the digital broadcast is received in the second physical frequency band is displayed on the display unit. A control unit for controlling
A digital broadcast receiver characterized by comprising: The digital broadcast receiver according to claim 1,
The physical frequency band is a physical channel.
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 1,
The physical frequency is information indicating an OFDM segment.
A digital broadcast receiver characterized by that. Digital broadcast reception of a digital broadcasting system that broadcasts the same service in the first physical frequency band and the second physical frequency band and broadcasts a service different from the service in the second physical frequency band A device,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second physical frequency band and the service broadcasted in the second physical frequency band;
A recording unit for recording data including information indicating a physical frequency band corresponding to the reception and information indicating a service broadcast in the physical frequency band each time digital broadcasting is received;
A display unit;
When the reception of the digital broadcast is newly started after the completion of the reception of the digital broadcast, when the data recorded in the recording unit includes information indicating the first physical frequency band, the Based on the information stored in the storage unit, control is performed so as to receive digital broadcasting based on information indicating the first physical frequency band, and predetermined reception quality cannot be obtained in reception by the control. And receiving a digital broadcast that broadcasts the frequency organization information, and broadcasting a service corresponding to the service of the data recorded in the recording unit from the frequency organization information included in the received digital broadcast. A digital broadcast based on the detected physical frequency, and if the reception is successful, the digital broadcast is performed in the second physical frequency band. A control unit for controlling to display the effect that has been received on the display unit,
A digital broadcast receiver characterized by comprising: The digital broadcast receiver according to claim 4, wherein
The physical frequency band is a physical channel.
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 4, wherein
The physical frequency is information indicating an OFDM segment.
A digital broadcast receiver characterized by that. Digital broadcast reception of a digital broadcasting system that broadcasts the same service in the first physical frequency band and the second physical frequency band and broadcasts a service different from the service in the second physical frequency band A device,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second physical frequency band and the service broadcasted in the second physical frequency band;
A display unit;
When receiving an instruction to switch to the second physical frequency band service corresponding to the received digital broadcast service when receiving a digital broadcast broadcast in the first physical frequency band, When a digital broadcast that broadcasts the frequency organization information is received based on the information stored in the storage unit, and the switching instruction is detected from the frequency organization information included in the received digital broadcast When a physical frequency that is broadcasting a service corresponding to the received digital broadcast service is detected and reception of the digital broadcast based on the detected physical frequency is attempted and reception is successful, the second physical A control unit that controls to display on the display unit that a digital broadcast is received in a frequency band;
A digital broadcast receiver characterized by comprising: The digital broadcast receiver according to claim 7, wherein
The control unit is
Based on the instruction, the display unit is controlled to switch from the display of the digital broadcast broadcast in the first physical frequency band to the display of the digital broadcast broadcast in the second physical frequency band. ,
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 7 or 8,
The physical frequency band is a physical channel.
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 7 or 8,
The physical frequency is information indicating an OFDM segment.
A digital broadcast receiver characterized by that. Digital broadcast reception of a digital broadcasting system that broadcasts the same service in the first physical frequency band and the second physical frequency band and broadcasts a service different from the service in the second physical frequency band A device,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second physical frequency band and the service broadcasted in the second physical frequency band;
A recording unit for recording data including information indicating a physical frequency band corresponding to the reception and information indicating a service broadcast in the physical frequency band each time digital broadcasting is received;
A display unit;
When the reception of the digital broadcast is newly started after the completion of the reception of the digital broadcast, when the data recorded in the recording unit includes information indicating the first physical frequency band, the The digital broadcast is controlled to be received based on the information indicating the first physical frequency band, and the digital broadcast that is broadcasting the frequency organization information is received based on the information stored in the storage unit. Detecting a physical frequency broadcasting a service corresponding to a service of data recorded in the recording unit from the frequency organization information included in the received digital broadcast, and digital broadcasting based on the detected physical frequency A control unit that controls to display on the display unit that it is possible to receive a digital broadcast in the second physical frequency band;
A digital broadcast receiver characterized by comprising: The digital broadcast receiver according to claim 11, wherein
The physical frequency band is a physical channel.
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 11, wherein
The physical frequency is information indicating an OFDM segment.
A digital broadcast receiver characterized by that. Digital broadcast reception of a digital broadcasting system that broadcasts the same service in the first physical frequency band and the second physical frequency band and broadcasts a service different from the service in the second physical frequency band A device,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second physical frequency band and the service broadcasted in the second physical frequency band;
A display unit;
When receiving a digital broadcast broadcast in the first physical frequency band and detecting a search instruction for a service in the second physical frequency band corresponding to the received digital broadcast service, When receiving a digital broadcast that broadcasts the frequency organization information based on the information stored in the storage unit, and detecting the search instruction from the frequency organization information included in the received digital broadcast When a physical frequency broadcasting a service corresponding to the received digital broadcast service is detected, and a digital broadcast based on the detected physical frequency is received, the digital broadcast is received in the second physical frequency band. A control unit that controls to display on the display unit that it is possible to
A digital broadcast receiver characterized by comprising: The digital broadcast receiver according to claim 14, wherein
The control unit is
Even if the instruction is detected, the display unit is controlled so as to maintain the display of the digital broadcast broadcast in the first physical frequency band.
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 14 or 15,
The physical frequency band is a physical channel.
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 14 or 15,
The physical frequency is information indicating an OFDM segment.
A digital broadcast receiver characterized by that. The first broadcast device and the second broadcast device broadcast the same service, and the second broadcast device is a digital broadcast receiving device of a digital broadcast system that broadcasts a service different from the service. There,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second broadcasting device and the service, which is broadcast by the second broadcasting device;
A display unit;
When receiving the digital broadcast broadcast by the first broadcasting device, if the reception quality of the digital broadcast deteriorates, the frequency organization information is broadcast based on the information stored in the storage unit. And detecting a physical frequency that broadcasts a service corresponding to the digital broadcast service whose reception quality has deteriorated, from the frequency organization information included in the received digital broadcast. A control unit that controls to display on the display unit that the second broadcast device is receiving the digital broadcast if the reception of the digital broadcast based on the physical frequency is attempted and the reception is successful.
A digital broadcast receiver characterized by comprising: The digital broadcast receiver according to claim 18, wherein
The physical frequency is a physical channel;
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 18, wherein
The physical frequency is information indicating an OFDM segment.
A digital broadcast receiver characterized by that. The first broadcast device and the second broadcast device broadcast the same service, and the second broadcast device is a digital broadcast receiving device of a digital broadcast system that broadcasts a service different from the service. There,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second broadcasting device and the service, which is broadcast by the second broadcasting device;
A recording unit that records data including information indicating a physical frequency corresponding to the reception and information indicating a service broadcast on the physical frequency each time digital broadcasting is received;
A display unit;
When the reception of the digital broadcast is started after the completion of the reception of the digital broadcast, the data recorded in the recording unit includes information indicating the physical frequency of the first broadcast device , And control to receive a digital broadcast based on the information indicating the physical frequency, and if a predetermined reception quality is not obtained in the reception by the control, based on the information stored in the storage unit, A physical broadcaster that receives a digital broadcast that broadcasts the frequency organization information, and that broadcasts a service corresponding to the service of the data recorded in the recording unit from the frequency organization information included in the received digital broadcast. If the frequency is detected and the digital broadcast is received based on the detected physical frequency, and the reception is successful, the second broadcast device receives the digital broadcast. A control unit for controlling that the effect to be displayed on said display unit,
A digital broadcast receiver characterized by comprising: The digital broadcast receiver according to claim 21, wherein
The physical frequency is a physical channel;
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 21, wherein
The physical frequency is information indicating an OFDM segment.
A digital broadcast receiver characterized by that. The first broadcast device and the second broadcast device broadcast the same service, and the second broadcast device is a digital broadcast receiving device of a digital broadcast system that broadcasts a service different from the service. There,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second broadcasting device and the service, which is broadcast by the second broadcasting device;
A display unit;
When receiving a digital broadcast broadcast by the first broadcast device, an instruction to switch to a service broadcast by the second broadcast device corresponding to the received digital broadcast service is detected. Then, based on the information stored in the storage unit, a digital broadcast that broadcasts the frequency organization information is received, and the switching instruction is detected from the frequency organization information included in the received digital broadcast When the physical frequency broadcasting the service corresponding to the digital broadcast service that has been received is detected, the digital broadcast based on the detected physical frequency is tried, and if the reception is successful, the second A control unit that controls to display on the display unit that a digital broadcast is being received by the broadcast device;
A digital broadcast receiver characterized by comprising: The digital broadcast receiver according to claim 24,
The control unit is
Based on the instruction, the display unit is controlled to switch from the digital broadcast display of the first broadcast device to the digital broadcast display of the second broadcast device.
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 24 or 25,
The physical frequency is a physical channel;
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 24 or 25,
The physical frequency is information indicating an OFDM segment.
A digital broadcast receiver characterized by that. The first broadcast device and the second broadcast device broadcast the same service, and the second broadcast device is a digital broadcast receiving device of a digital broadcast system that broadcasts a service different from the service. There,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second broadcasting device and the service, which is broadcast by the second broadcasting device;
A recording unit that records data including information indicating a physical frequency corresponding to the reception and information indicating a service broadcast on the physical frequency each time digital broadcasting is received;
A display unit;
When the reception of the digital broadcast is started after the completion of the reception of the digital broadcast, the data recorded in the recording unit includes information indicating the physical frequency of the first broadcast device The digital broadcast is received based on the information indicating the physical frequency, and the digital broadcast that broadcasts the frequency organization information is received based on the information stored in the storage unit. From the frequency organization information included in the received digital broadcast, a physical frequency broadcasting a service corresponding to the service of the data recorded in the recording unit is detected, and reception of the digital broadcast based on the detected physical frequency A control unit that controls to display on the display unit that it is possible to receive a digital broadcast by the second broadcasting device,
A digital broadcast receiver characterized by comprising: The digital broadcast receiver according to claim 28,
The physical frequency is a physical channel;
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 28,
The physical frequency is information indicating an OFDM segment.
A digital broadcast receiver characterized by that. The first broadcast device and the second broadcast device broadcast the same service, and the second broadcast device is a digital broadcast receiving device of a digital broadcast system that broadcasts a service different from the service. There,
A storage unit for storing information for receiving frequency organization information indicating a correspondence relationship between a physical frequency in the second broadcasting device and the service, which is broadcast by the second broadcasting device;
A display unit;
When receiving a digital broadcast broadcast at the physical frequency of the first broadcast device, a search instruction for a service at the physical frequency of the second broadcast device corresponding to the received digital broadcast service Is detected, based on the information stored in the storage unit, a digital broadcast that broadcasts the frequency organization information is received, and the search instruction is received from the frequency organization information included in the received digital broadcast. When a physical frequency broadcasting a service corresponding to the digital broadcast service received at the time of detection is detected and a digital broadcast based on the detected physical frequency is received, the second broadcast device digitally A control unit that controls to display on the display unit that the broadcast can be received;
A digital broadcast receiver characterized by comprising: The digital broadcast receiver according to claim 31, wherein
The control unit is
Even if the instruction is detected, the display unit is controlled so as to maintain the display of the digital broadcast of the first broadcasting device.
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 31 or 32,
The physical frequency is a physical channel;
A digital broadcast receiver characterized by that. The digital broadcast receiver according to claim 31 or 32,
The physical frequency is information indicating an OFDM segment.
A digital broadcast receiver characterized by that.

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