JP4402984B2 - Terrestrial digital broadcast receiving apparatus and navigation apparatus - Google Patents

Description

  The present invention relates to a terrestrial digital broadcast receiving apparatus and a navigation apparatus that receive a terrestrial digital broadcast and display various broadcasts on a monitor or the like. In particular, the present invention relates to a terrestrial digital broadcast receiving apparatus and a navigation apparatus that can be mounted on a car.

  Terrestrial digital broadcasting that provides television broadcasting with digital data is known. An in-vehicle navigation device that has a terrestrial digital broadcast receiving function and displays a terrestrial digital broadcast television broadcast on a monitor is also known. When terrestrial digital broadcasting is received on such a moving body such as a vehicle, the radio waves of the terrestrial digital broadcasting are interrupted and the broadcasting may be interrupted.

  In order to prevent this interruption of broadcasting, the loss of digital data is predicted due to an instantaneous interruption of the broadcast wave, digital data that is expected to be lost in advance is acquired from the broadcasting station and stored on the terminal side, and the loss has occurred In such a case, a technique has been proposed in which missing data is supplemented on the terminal side by using supplementary data prepared in advance (see, for example, Patent Document 1).

JP 2003-134064 A

  However, such a technique cannot be applied when a vehicle enters a tunnel or the like and the radio wave of terrestrial digital broadcasting is completely interrupted. In other words, when the vehicle enters a tunnel or the like, the problem that the broadcast is interrupted remains.

The invention of claim 1 is applied to a terrestrial digital broadcast receiving device, receiving means for receiving terrestrial digital broadcast, data broadcast extracting means for extracting data related to data broadcasting from the received terrestrial digital broadcast, and receiving TV broadcast extracting means for extracting data relating to television broadcast from terrestrial digital broadcast, storage means for storing data relating to data broadcast extracted by the data broadcast extracting means, and television broadcast when receiving terrestrial digital broadcast is possible When the television broadcast based on the data related to the television broadcast extracted by the extracting means is displayed on the display means and the reception of the terrestrial digital broadcast becomes impossible, the data broadcast based on the data related to the data broadcast stored in the storage means is displayed. e Bei and control means for displaying on the display means, storage means, extracting the data broadcast extraction means Data about data broadcast, is characterized in that the processing and storing the data to be displayed with a simple data broadcast than the display of the data broadcast based on unprocessed data.
According to a second aspect of the present invention, in the terrestrial digital broadcast receiving apparatus according to the first aspect of the present invention, the digital terrestrial broadcast receiving apparatus further includes information type setting means for presetting a type of information acquired by data broadcasting, and the storage means relates to the extracted data broadcast Data relating to the type of information set from the data is further extracted and stored.
According to a third aspect of the present invention, in the terrestrial digital broadcast receiving apparatus according to any one of the first to second aspects, a broadcast condition for displaying on the display means a data broadcast based on data relating to the data broadcast stored in the storage means. Broadcast condition setting means for presetting, and the control means displays on the display means a data broadcast based on the data related to the data broadcast stored in the storage means based on the set broadcast condition It is.
According to a fourth aspect of the present invention, in the terrestrial digital broadcast receiving apparatus according to any one of the first to third aspects, when the storage means is capable of receiving the terrestrial digital broadcast, the control means uses the television broadcast as the display means. in the background are displayed, Ru der what and to store the data related to the data broadcasting.
According to a fifth aspect of the present invention, in the terrestrial digital broadcast receiving apparatus according to any one of the first to fourth aspects, the storage means is based on the data prior to processing the data related to the data broadcast extracted by the data broadcast extraction means. It is characterized in that it is processed and stored into data to be a data broadcast display in which at least a part of the character display is deleted from the data broadcast display.
The invention of claim 6 is the terrestrial digital broadcast receiver according to any one of claims 1 to 5, further comprising instruction input means for inputting an instruction by a user operation, and the storage means further includes data related to data broadcasting. The data before processing is stored, and when the terrestrial digital broadcast cannot be received, the control means displays a simple data broadcast based on the processed data stored in the storage means and inputs an instruction. When an instruction is input by the means, the display is switched to the data broadcast display based on the data before processing.
The invention of claim 7 is applied to a vehicle-mounted navigation device, and includes display means and the terrestrial digital broadcast reception device according to any one of claims 1 to 6 , and the control means further performs processing related to navigation. And performing display associated with the navigation-related processing on the display means.

Since the present invention is configured as described above, the following effects can be obtained.
Even if terrestrial digital broadcasting cannot be received during television broadcasting, it is possible to view useful terrestrial digital broadcasting without interruption.

  FIG. 1 is a block diagram of an in-vehicle navigation device 1 according to this embodiment. The navigation device 1 includes a control device 11, a current location detection device 12, an input device 13, a hard disk 14, an RF receiver 15, a radio wave intensity monitoring circuit 16, a monitor 17, an audio output device 18, and the like. The navigation apparatus 1 according to the present embodiment can perform navigation-related processing, receive terrestrial digital broadcasts, and display the terrestrial digital broadcasts on a monitor.

  The control device 11 includes a microprocessor and its peripheral circuits. The current position detection device 12 detects the current position of the vehicle, and includes, for example, an azimuth sensor that detects the traveling direction of the vehicle, a vehicle speed sensor that detects a vehicle speed, a GPS sensor that detects a GPS signal from a GPS (Global Positioning System) satellite, and the like.

  The input device 13 is used when inputting a destination of a vehicle or the like during route search. Also used to instruct operations related to terrestrial digital broadcasting. A remote controller may be used, or a touch panel provided on the screen of the monitor 17 may be used. The hard disk 14 is a rewritable nonvolatile recording medium, and stores map data used for navigation processing. In addition, data relating to data broadcasting of terrestrial digital broadcasting described later is also stored.

  The RF receiver 15 receives the terrestrial digital broadcast radio wave from the terrestrial digital broadcast station 2, extracts digital data from the received radio wave of the terrestrial digital broadcast, and outputs the digital data to the control device 11. The radio wave intensity monitoring circuit 16 monitors (detects) the radio wave intensity of the terrestrial digital broadcast received by the RF receiver 15. Specifically, the radio wave intensity of the received digital terrestrial broadcast is digitized and output to the control device 11.

  The monitor 17 displays navigation processing and terrestrial digital broadcasting. The monitor 17 may be provided integrally as a part of the main body of the navigation device 1 or may be provided separately as a housing. Furthermore, only the monitor 17 may be connected to the navigation apparatus 1 main body by a cable or the like and provided at a separated position.

  The voice output device 18 outputs voice guidance related to navigation processing. It also outputs terrestrial digital broadcast music and audio.

  In the navigation device 1 configured as described above, the control device 11 displays the road map and the current location mark by using the current location information of the vehicle detected by the current location detection device 12 and the map data stored in the hard disk 14. Various navigation processes such as route calculation (route search) and route guidance are performed. When the terrestrial digital broadcast display mode is selected, the received terrestrial digital broadcast is displayed on the monitor 17 and the sound of the terrestrial digital broadcast is output via the audio output device 18. Various processing programs executed by the control device 11 are incorporated in a ROM (not shown) provided in the control device 11.

  Hereinafter, the display of terrestrial digital broadcasting will be described in detail.

  Terrestrial digital broadcasting is broadcasting provided by digital data using the UHF band of terrestrial waves. Terrestrial digital broadcasting provides television broadcasting and data broadcasting. Terrestrial digital broadcasting television broadcasting replaces the conventional television broadcasting provided by analog signals using the VHF band, and various programs are broadcast in real time from each broadcasting station. That is, image data and audio data that change in real time are sent from each broadcasting station.

  On the other hand, data broadcasting of terrestrial digital broadcasting is broadcasting that provides various types of information such as weather, news, and life information. Various information can be provided by selecting information to be viewed on the menu screen. For data transmission of various types of information, for example, a so-called carousel method is employed in which the same content is continuously sent at a constant cycle. That is, the data of various types of information in data broadcasting does not change in real time unlike television broadcasting. In other words, the broadcast does not have real-time characteristics. Various types of information are updated at regular intervals within the broadcasting station.

  In the navigation device 1 according to the present embodiment, when a television broadcast display mode of terrestrial digital broadcasting is selected, the television broadcast is output to the monitor 17 or the audio output device 18. In this case, when reception of terrestrial digital broadcasting becomes impossible, data broadcasting is automatically switched to data broadcasting using data broadcasting data previously stored in the hard disk 14. In this way, useful information on terrestrial digital broadcasting is continuously provided.

  FIG. 2 is a diagram for explaining a state in which the terrestrial digital broadcast television broadcast display mode is selected and the terrestrial digital broadcast television broadcast is output in the navigation device 1. At this time, in the background, data relating to the type of information preset by the user is automatically acquired from the data broadcast (reference numeral 21), and the acquired data is processed and stored in the hard disk 14. The original acquired data before processing is saved at the same time.

  FIG. 3 is a diagram for explaining a state in which reception of terrestrial digital broadcasting is disabled and switching to data broadcasting output is performed. When the terrestrial digital broadcast can be received, the data broadcast data stored is read from the hard disk 14, displayed on the monitor 17, and output from the audio output device 18. In some cases, the data broadcast is not displayed on the sound but only displayed on the monitor 17.

  In the example of FIG. 3, data of information types such as weather, breaking news, and sports information is stored, and the data is read. In FIG. 3, first, weather information is output. Information regarding the “Kanto region weather” specified by the user is displayed. The weather, breaking news, and sports information screens are switched and displayed at intervals specified in advance by the user. When there is audio data, the audio output is switched as the screen is switched.

  FIG. 4 is a diagram for explaining how data broadcasting is switched from simple image display to detailed image display. In this embodiment, when reception of terrestrial digital broadcasting is disabled and switching to data broadcasting output is performed, first, a simple image data broadcasting is displayed. This is because when a detailed image including characters and the like is displayed, the user, that is, the driver, may concentrate on the screen, which may cause a danger to driving.

  In this embodiment, only simple images (graphics) representing information types, title characters indicating information types, or both are simply displayed, and character information is displayed in response to a request by a user operation. The detailed contents including it were displayed. Thereby, the driving safety can be ensured. It should be noted that the image may be only an image (graphic or graphic) remaining after removing the character part from the data broadcast.

  FIG. 4A shows a state where only the title characters of sports information and a simple image are displayed. The title characters and simple image data are processed from the original data of the data broadcast and stored in the hard disk 14. In this state, when an instruction for displaying detailed information is input using the input device 13, a detailed screen including detailed character information shown in FIG. 4B is displayed. The detailed image in FIG. 4B is displayed using the original data of the data broadcast as it is. Therefore, in addition to the processed data, the hard disk 14 also stores data before data broadcasting (original data).

  FIG. 5 is a diagram showing a flowchart of a process in which the user sets the type of received data of the data broadcast and the broadcast conditions. In this embodiment, when reception of terrestrial digital broadcasting is disabled and switching to data broadcasting output is made, the user sets in advance what data broadcasting is to be broadcast under what conditions. The control device 11 executes the process of FIG.

  In step S1, the type of data broadcast desired by the user (for example, weather information (Kanto: Tokyo), breaking news, etc.) is set. The type of data broadcasting is the type of information requested by the user, and is the genre (preference) of the information requested by the user. Acquired by causing the user to actually perform an operation on the data broadcasting menu. Thereby, it is possible to acquire data related to information of a type that meets the user's desire from among a large number of types of information.

  In step S2, the update interval of the received data is set. Acquired by causing the user to actually operate the menu on the data broadcast. This determines at what timing and frequency the latest information is to be acquired.

  In step S3, an interval for automatically displaying a plurality of acquired data broadcast data on the screen is set. That is, the switching timing of a plurality of types of data broadcasting screens is set. This is performed by displaying a predetermined menu screen and allowing the user to input using the input device 13. This makes it possible to automatically switch and view a lot of information provided by data broadcasting at a desired timing.

  In step S4, the setting value set in step S1 to step S3 is stored in the hard disk 14, and the process ends.

  FIG. 6 is a diagram illustrating a flowchart of processing for storing data of data broadcasting. The processing of FIG. 6 starts when the RF receiver 15 receives terrestrial digital broadcast from the terrestrial digital broadcast station 2, extracts digital data, and outputs the digital data to the control device 11. The control device 11 executes the process of FIG.

  In step S11, data broadcast data is extracted and acquired from the digital data. In step S12, it is determined whether or not the data broadcast is viewed. It is determined whether or not the display mode of the terrestrial digital broadcasting is currently set and further the data broadcasting is being viewed. If it is determined in step S12 that the data broadcast is viewed, the process proceeds to step S13.

  In step S13, the data broadcast is output to the monitor 17. In data broadcasting, first, a menu screen of data broadcasting is displayed. The user can select a desired information type or the like using the input device 13 in accordance with the menu screen, and can view a data broadcast related to the desired information.

  If it is determined in step S12 that the data broadcast is not viewed, the process proceeds to step S14. In step S14, it is determined whether or not to acquire a data broadcast according to the preference set by the user. If the user has not set a preferred data type, a negative determination is made in step S14 and the process proceeds to step S15. In step S15, the acquired data broadcast data is discarded. The fact that the user does not set the preferred data type is the case where the user does not want to switch to the data broadcast even if the terrestrial digital broadcast cannot be received, and the data broadcast data need not be stored.

  If it is determined in step S14 that a data broadcast corresponding to the preference set by the user is acquired, the process proceeds to step S16. This is the case where the user wants to switch to data broadcasting when reception of terrestrial digital broadcasting is not possible. In step S16, the acquired data broadcast data is analyzed, simple display data and detailed display data of the data broadcast are prepared, and the process proceeds to steps S17 and S18.

  The simple display data is data composed of image data and title characters. The image data is an image (a picture, a figure, or a graphic) that visually indicates the type of data broadcasting. The title character indicates the title of the data broadcast of the type. The simplified display data is generated by processing to delete character information and the like from the acquired data broadcasting data. The detailed display data is display data that uses the acquired data broadcasting data as it is, and is data that includes a large amount of character information.

  That is, the simple display data is data obtained by substantially processing the original data of the data broadcast, and the detailed display data is data that does not substantially process the original data of the data broadcast. In other words, the detailed display data is data in which the original information held by the acquired data broadcasting data is stored in the hard disk 14 as it is, and the simple display data is the acquired data broadcasting data. This data is stored in the hard disk 14 by performing processing that omits some of the original information held by the data or by performing processing that simplifies it.

  In step S17, the simplified display data prepared in step S16 is stored in the hard disk 14. In step S18, the detailed display data prepared in step S16 is stored in the hard disk 14.

  FIG. 7 is a diagram showing a flowchart of processing when the terrestrial digital broadcast television broadcast display mode is set. The control device 11 executes the process of FIG.

  In step S21, data relating to the radio wave intensity of the terrestrial digital broadcast input from the radio wave intensity monitoring circuit 16 is acquired, and it is determined whether the radio wave intensity is sufficient. Specifically, it is determined whether the radio field intensity is equal to or higher than a predetermined value. If it is determined that the radio field intensity is sufficient, the process proceeds to step S22. If it is determined that the radio field intensity is not sufficient, the process proceeds to step S23. Sufficient radio wave intensity means that terrestrial digital broadcasting can be received, and insufficient radio wave intensity means that terrestrial digital broadcasting cannot be received. Whether or not the radio wave intensity is sufficient also means whether or not the vehicle is within a range where terrestrial digital broadcasting can be received.

  In step S22, the television broadcast is output to the monitor 17 and the audio output device 18, and the process proceeds to step S24. In step S24, the data related to the data broadcast described in FIG. 6 is stored, and the process returns to step S21 to repeat the process.

  On the other hand, in step S23, switching to data broadcasting is performed. As described with reference to FIGS. 3 and 4, data broadcasting is performed using the data broadcasting data stored in step S24 when the radio wave intensity is sufficient. Then, it returns to step S21 and repeats a process. When the radio wave intensity becomes sufficient, the program returns to television broadcasting. Note that, as described in step S14 and step S15 of FIG. 6, when data broadcast data is not stored, a predetermined screen such as “cannot receive terrestrial digital broadcast” is displayed. Alternatively, the screen is shifted to a navigation processing screen.

When the navigation device 1 described above is used, the following effects are obtained.
(1) When the terrestrial digital broadcast becomes unreceivable during the television broadcast, it is switched to the data broadcast using the previously stored data broadcast data. Can be provided continuously. In particular, even when a vehicle enters a tunnel or a building and the terrestrial digital broadcasting radio wave is completely interrupted, it is possible to view useful terrestrial digital broadcasting without interruption.
(2) Since the type of information of the data broadcast to be switched is set in advance, it is possible to automatically view information on the type (genre) that suits one's preference from the many types of data broadcast information. Also, since broadcast conditions such as information update intervals and switching intervals and order of various information screens are set in advance, it is possible to view data broadcasts with broadcast conditions suited to one's preference.
(3) Since the data broadcast data is acquired and stored in the background where the television broadcast can be viewed, the data can be stored without disturbing the viewing of the television broadcast. Further, since data acquisition in the background is automatically performed under preset conditions, no user operation is required each time. Further, since the data broadcast data immediately before the terrestrial digital broadcast cannot be received, that is, the television broadcast cannot be viewed is stored, the latest data broadcast can be viewed.
(4) When switching to data broadcasting, since data broadcasting with a simple display is initially performed, safety in driving the vehicle can be ensured. For example, if detailed character information is suddenly displayed, the driver may concentrate on it. However, if only the title characters and simple images are present, the driver is safe without having to concentrate on the screen. After that, since a detailed image is displayed according to the driver's operation, the detailed display displayed under the driver's intention does not cause a safety problem. For simple display, in particular, the display of detailed character information is deleted, so that the driver can be prevented from concentrating on the screen.
(5) Since the data related to the data broadcast is acquired in advance and stored in the hard disk 14, the desired data broadcast can be viewed instantaneously when the data broadcast is switched. That is, when viewing data broadcasting, there is no problem that it takes time to complete the data acquisition by the carousel method.

  In the above embodiment, an example in which the navigation device 1 has a reception function of terrestrial digital broadcasting has been described, but it is not necessarily limited to this content. The present invention can also be applied to a single terrestrial digital broadcast receiver. In this case, the function unique to the navigation device may be deleted from the configuration of the above embodiment. For example, a terrestrial digital broadcast receiving apparatus configured by deleting only the configuration of the current location detecting apparatus 12 from the block diagram of FIG. Even when the terrestrial digital broadcast receiving apparatus configured as described above is mounted on a vehicle, the above-described effects can be obtained.

  Moreover, it is not necessary to limit to the case where such a terrestrial digital broadcast receiving apparatus is mounted on a car. That is, the terrestrial digital broadcast receiving apparatus to which the present invention is applied is effective in all situations where the radio wave of the terrestrial digital broadcast can be shifted from a state where it can be received to a state where it cannot be received. For example, the terrestrial digital broadcast receiving apparatus may be mounted on a train, an airplane, or another vehicle.

  The present invention can also be applied to a situation in which a terrestrial digital broadcast receiving apparatus that can be carried by a person and the radio waves of the terrestrial digital broadcast cannot be received due to movement of the person. For example, the present invention can also be applied when the mobile phone has a reception function for digital terrestrial broadcasting. A mobile phone having a terrestrial digital broadcast receiving function corresponds to the terrestrial digital broadcast receiving apparatus of the present invention.

  In the above embodiment, as simple display data, an example of data consisting of an image that simply shows the type of data broadcast and a title character that indicates the title of the data broadcast of the type has been described. There is no need to limit. The simple display may be any display as long as the display content to be broadcast in normal data broadcasting is simplified. In particular, the type of information to be broadcast in data broadcasting is preferably a display that can be easily identified visually or at first glance. In addition, it is preferable that display that causes the driver to concentrate on the screen is eliminated as much as possible. For example, it is better not to have detailed information by characters. A title character or the like indicating the type of data broadcasting information may be displayed. In this case, the size of the characters should be large enough to be read intuitively at a glance.

  In the above-described embodiment, the example of the two-stage display from the simple display to the detailed display using the original data has been described, but it is not necessarily limited to this content. Detailed display may be further hierarchized into several stages. That is, from simple display that can understand the type of data broadcast information to final display that uses all data of the data broadcast, it may be hierarchized in several stages according to the information. The user operates the input device 13 only when more detailed information is desired, and deepens the hierarchy. If the desired information is obtained on the way, the operation can be terminated at that level.

  In the above-described embodiment, it has been described that the data broadcast is a broadcast that provides various types of information such as weather, news, sports information, and life information. In addition, there are local information such as traffic congestion information and tourism information. That is, there are various types of information broadcast by data broadcasting.

  In the above embodiment, the example of the hard disk 14 has been described as the nonvolatile memory, but it is not necessarily limited to this content. For example, a memory such as a flash memory or a battery-backed SRAM may be used.

  In the above-described embodiment, the example in which the radio wave intensity automatically returns to the television broadcast when the radio wave intensity returns from the weak state to the strong state has been described with reference to FIG. However, when the radio wave intensity becomes strong, a display for confirming whether or not to return to the television broadcast may be displayed to the user, and the television broadcast may be returned according to an instruction from the user.

  In the above embodiment, the program executed by the navigation device 1 has been described as an example already installed in each device, but it is not necessary to limit to this content. You may make it provide these programs with recording media, such as DVD and CD-ROM. In this case, a device for the navigation device 1 to read data from those recording media is required. Further, these programs may be provided via a transmission medium such as a communication line represented by the Internet. In other words, the program can be converted into a signal on a carrier wave that carries the transmission medium and transmitted. Also in this case, a communication interface for connecting to a communication line such as the Internet is required.

  Although the example of the navigation device mounted on the vehicle has been described in the above embodiment, it is not necessarily limited to this content. The navigation apparatus may be realized by executing the control program for the navigation apparatus 1 described above on a portable personal computer (mobile computer). In that case, the current location detection device 13 and the like may be connected to a predetermined I / O port of the personal computer. In addition, an expansion board capable of receiving terrestrial digital broadcasting is required. Alternatively, only the terrestrial digital broadcast receiving apparatus may be realized on a personal computer.

  Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other embodiments conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention.

It is a figure which shows the block diagram of the vehicle-mounted navigation apparatus of this Embodiment. It is a figure explaining a mode that the television broadcast of a terrestrial digital broadcast is output in a navigation apparatus. It is a figure explaining a mode changed to the output of data broadcasting. It is a figure explaining a mode that data broadcasting is switched from the display of a simple image to the display of a detailed image. It is a figure which shows the flowchart of the process which a user sets the reception data classification and broadcast condition of data broadcasting. It is a figure which shows the flowchart of the process which preserve | saves the data of data broadcasting. It is a figure which shows the flowchart of a process when the television broadcast display mode of terrestrial digital broadcasting is set.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car navigation system 2 Terrestrial digital broadcasting station 11 Control apparatus 12 Present location detection apparatus 13 Input apparatus 14 Hard disk 14
15 RF receiver 16 Radio wave intensity monitoring circuit 17 Monitor 18 Audio output device

Claims (7)

A terrestrial digital broadcast receiver,
Receiving means for receiving terrestrial digital broadcasting;
Data broadcast extraction means for extracting data related to data broadcast from the received terrestrial digital broadcast;
A television broadcast extraction means for extracting data relating to the television broadcast from the received terrestrial digital broadcast;
Storage means for storing data relating to the data broadcast extracted by the data broadcast extraction means;
When the terrestrial digital broadcast can be received, the television broadcast based on the data related to the television broadcast extracted by the television broadcast extraction means is displayed on the display means, and the terrestrial digital broadcast cannot be received. , e Bei and control means for displaying the data broadcasting based on the data related to the data broadcasting stored in the storage unit on the display unit,
The storage means processes and stores the data related to the data broadcast extracted by the data broadcast extraction means into data that is simpler data broadcast display than data broadcast display based on the data before processing. A terrestrial digital broadcast receiver. The terrestrial digital broadcast receiver according to claim 1,
It further comprises information type setting means for presetting the type of information acquired by data broadcasting,
The terrestrial digital broadcast receiving apparatus, wherein the storage means further extracts and stores data relating to the set type of information from the data relating to the extracted data broadcast. In the terrestrial digital broadcast receiver according to any one of claims 1 to 2,
Broadcast condition setting means for presetting broadcast conditions for displaying a data broadcast based on data relating to the data broadcast stored in the storage means on the display means;
The control means displays a data broadcast based on the data related to the data broadcast stored in the storage means on the display means based on the set broadcast conditions. In the terrestrial digital broadcast receiver according to any one of claims 1 to 3,
The storage means stores data related to the data broadcast in the background in which the control means displays the television broadcast on the display means when the terrestrial digital broadcast can be received. Terrestrial digital broadcast receiver. In the terrestrial digital broadcast receiver according to any one of claims 1 to 4 ,
The storage means processes the data related to the data broadcast extracted by the data broadcast extraction means into data that becomes a data broadcast display in which at least a part of the character display is deleted from the data broadcast display based on the data before processing. A terrestrial digital broadcast receiver characterized by being stored. In the terrestrial digital broadcast receiver according to any one of claims 1 to 5 ,
It further comprises an instruction input means for inputting an instruction by a user operation,
The storage means further stores the data before the processing of the data related to the data broadcast,
The control means displays the simple data broadcast based on the processed data stored in the storage means when reception of the terrestrial digital broadcast becomes impossible, and the instruction input means A terrestrial digital broadcast receiving apparatus that switches to a data broadcast display based on the data before processing when an instruction is input. An in-vehicle navigation device,
Display means;
A terrestrial digital broadcast receiver according to any one of claims 1 to 6 , wherein the control means further performs processing related to navigation and performs display associated with the processing related to navigation on the display means. A vehicle-mounted navigation device.

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